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MAKERERE UNIVERSITY
COLLEGE OF ENGINEERING, DESIGN,
ART AND TECHNOLOGY
SCHOOL OF ENGINEERING
DEPARTMENT OF ELECTRICAL AND COMPUTER
ENGINEERING
BSc. TELECOMMUNICATION ENGINEERING
A REPORT ON INDUSTRIAL TRAINING CONDUCTED
AT
UGANDA ELECTRICITY TRANSMISSION COMPANY
LIMITED
By
Katunguka Jim
12/U/395
Dr. Dorothy Okello Mr. Cranmer Rwagize
(Academic supervisor) (Field supervisor)
Signature………………….. Signature…………………..
©June-August 2014
i
DECLARATION
I, KATUNGUKA JIM, hereby declare that this is my original work and to the best of my knowledge, it
has never been presented anywhere for any award of any Degree. Any part of this report that has
borrowed knowledge from other sources duly acknowledges such sources in citations and references.
Signature…………………………………………………………………………………………………….
ii
ACKNOWLEDGEMENT
I thank the almighty God for the knowledge and wisdom imparted in me to successfully
complete this industrial training and compile this report; He deserves all the glory and honor. I
further thank Him for my parents and guardians who have provided me all the necessary support
throughout all this process.
My sincere appreciation also goes to my supervisors both at campus and at the organization for
the advice, knowledge, guidance, direction offered to me. I would not have done anything
without you. Thank you very much Dr. Dorothy Okello, Mr. Gerald Budigiri and Mr. Paul
Bogere, the internship coordinator Department of Electrical and Computer Engineering,
Makerere University. I really appreciate the tremendous help granted willingly by the great
communication engineers of UETCL, thank you Mr. J B Walugembe, the Principal
Communication section, Mr. Kibuuka Yusuf, Mr. Dauda Musinguzi, Mr. Cranmer Rwagize, Mr.
George Alioke, Mr. Job Musalwa, and Ms. Carol Ssekamatte, may God reward the works of your
hands.
I cannot underrate the great contribution made by my fellow trainees, Joel Kafeero, Edward
Kasozi and Coline Anyango, for me to accomplish this training as well as this report, thank you
for your knowledge and for being social to me. You have an upper hand in this success.
Finally, I thank all the other employees of UETCL who were so welcoming and gave me a
friendly environment to learn and finish this training. A big thanks also goes to all those that
advised me on how to make a good report. May God reward you abundantly.
iii
LIST OF SYMBOLS AND ACRONYMS
ADSS -All Dielectric Self-Supporting
CEO -Chief Executive Officer
CVT -Capacitor Voltage Transformer
ERA -Electricity Regulatory Authority
ICT -Information and Communication Technology
IT -Information Technology
LAN -Local Area Network
LMU -Line Matching Unit
MDF -Main Distribution Frame
ODF -Optical Distribution Frame
OTDR -Optical Time Domain Recto meter
PABX -Public Automatic Branch Exchange
PAX -Private Automatic Exchange
PDH -Presio Digital Hierarchy
PLC -Power Line Carrier
PSTN -Public Switched Telephone Network
SCADA -Supervisory Control And Data Acquisition
SCE -Senior Communication Engineer
SDH -Synchronous Digital Hierarchy
UEB -Uganda Electricity Board
UEDCL -Uganda Electricity Distribution Company Limited
UEGCL -Uganda Electricity Generation Company Limited
UETCL -Uganda Electricity Transmission Company Limited
VOIP -Voice Over Internet Protocol
iv
TABLE OF CONTENTS
DECLARATION............................................................................................................................. i
ACKNOWLEDGEMENT..............................................................................................................ii
LIST OF SYMBOLS AND ACRONYMS....................................................................................iii
TABLE OF CONTENTS............................................................................................................... iv
LIST OF DIAGRAMS AND FIGURES ......................................................................................vii
PREFACE....................................................................................................................................viii
CHAPTER ONE:.......................................................................................................................... 1
BACKGROUND OF THE ORGANIZATION AND INDUSTRIAL TRAINING
PROGRAMME............................................................................................................................... 1
1.0 Introduction.......................................................................................................................... 1
1.1 Background of the industrial training Programme............................................................... 1
1.2 Objectives of the industrial training..................................................................................... 1
1.3 Background of the organization........................................................................................... 2
1.3.1 UETCL vision .................................................................................................................. 2
1.3.2 UETCL mission statement ............................................................................................... 2
1.3.3 Core values....................................................................................................................... 2
1.4 Mandate of the organization ................................................................................................ 2
1.5 Departments of the organization.......................................................................................... 3
1.5.1 The CEO’s Office............................................................................................................. 3
1.5.2 The Corporate Service...................................................................................................... 3
1.5.3 Finance, Accounts and Sales............................................................................................ 3
1.5.4 Internal Audit ................................................................................................................... 4
1.5.5 Operations and Maintenance............................................................................................ 4
1.5.6 Planning and Investment.................................................................................................. 4
1.5.7 Projects Implementation................................................................................................... 4
1.5.8 Human Resource and Administration .............................................................................. 4
1.6 Department, section, station attached to and duration of the training ................................. 5
1.6.1 Focus on the ICTD department....................................................................................... 5
1.6.2 Focus on the Communication section. ............................................................................. 6
v
1.7 UETCL Organizational structure......................................................................................... 6
1.8 ICT Departmental structure ................................................................................................. 7
CHAPTER TWO .......................................................................................................................... 8
LITERATURE REVIEW ............................................................................................................... 8
2.0 Introduction.......................................................................................................................... 8
2.1 Communication Basics ........................................................................................................ 8
2.1.1 Communication................................................................................................................ 8
2.1.2 A communication link...................................................................................................... 9
2.2 Communication Media....................................................................................................... 10
2.2.1 Optic fiber ...................................................................................................................... 10
2.2.2 Copper............................................................................................................................ 13
2.2.3 Power Line Carrier (PLC).............................................................................................. 19
2.2.4 Free space or radio communication ............................................................................... 21
2.3 Multiplexers....................................................................................................................... 22
2.4 Power Supplies................................................................................................................... 24
2.5 Telephony ......................................................................................................................... 26
CHAPTER THREE.................................................................................................................... 29
PRACTICAL WORK................................................................................................................... 29
3.0 Introduction........................................................................................................................ 29
3.1 Optical Fiber cable preparation, splicing, and measurement of optical length.................. 29
3.1.1 Objective ........................................................................................................................ 29
3.1.2 Apparatus ....................................................................................................................... 29
3.1.3 Procedure........................................................................................................................ 30
3.1.4 Conclusion...................................................................................................................... 31
3.2 Termination of CAT 6 cable with RJ45 cable plug ........................................................... 31
3.2.1 Objectives....................................................................................................................... 31
3.2.2 Tools used ...................................................................................................................... 31
3.2.3 Procedure........................................................................................................................ 31
3.2.4 Cable testing................................................................................................................... 32
vi
3.2.5 Conclusion...................................................................................................................... 33
3.3 Termination of the dB sub 9 connector pin out serial cable .............................................. 33
3.3.1 Objectives....................................................................................................................... 33
3.3.2 Tools used ...................................................................................................................... 33
3.3.3 Procedure 1 (continuity test)................................................................................................ 34
3.3.4 Procedure 2 (Termination of a new CAT 5e cable)............................................................. 34
3.3.5 Cable testing......................................................................................................................... 35
3.3.6 Observations and conclusion ............................................................................................... 35
3.4 Termination on a Krone block ................................................................................................ 36
3.4.1 Termination with a 25 twisted pair cable....................................................................... 36
3.5 Others...................................................................................................................................... 38
3.5.1 Study visits carried out during the training.......................................................................... 38
3.6 Analysis of the tele protection equipment (SWT 3000) ......................................................... 39
3.7 Evaluation ............................................................................................................................... 40
CHAPTER FOUR....................................................................................................................... 41
OBSERVATIONS, RECOMMENDATIONS AND CONCLUSION......................................... 41
4.0 Introduction........................................................................................................................ 41
4.1 Achievements..................................................................................................................... 41
4.1.1 Practical skills ................................................................................................................ 41
4.1.2 Interpersonal skills ......................................................................................................... 41
4.1.3 Communication skills..................................................................................................... 42
4.1.4 Others ............................................................................................................................. 42
4.2 Challenges.......................................................................................................................... 42
4.3 Recommendations.............................................................................................................. 43
4.3.1 To UETCL...................................................................................................................... 43
4.3.2 To Makerere University ................................................................................................. 43
4.4 Conclusion ......................................................................................................................... 44
REFERENCES............................................................................................................................ 45
APPENDIX 1............................................................................................................................... 46
vii
LIST OF DIAGRAMS AND FIGURES
Figure 1: Organizational Structure of UETCL............................................................................... 6
Figure 2: Structure of ICT Department........................................................................................... 7
Figure 3: Illustration of A Communication Link............................................................................. 9
Figure 4: An Illustration of The Principle Of Operation Of Optic Fiber. .................................... 10
Figure 5: Layers of Optic Fiber .................................................................................................... 12
Figure 6: A Straight Cable Connected Using T568B Mode.......................................................... 15
Figure 7: RJ45 cable plugs and an illustration of the CAT6 cable with the plug......................... 17
Figure 8: Arrangement of The Pins On The Male And Female Pin Outs..................................... 18
Figure 9: A Schematic Illustration of A Power Line Carrier System............................................ 21
Figure 10: Connection of the microwave radio system................................................................. 22
Figure 11: Structure of UMUX ..................................................................................................... 23
Figure 12: Structure of Hit 7025................................................................................................... 24
Figure 13: A Schematic Illustration of the VOIP Network of UETCL......................................... 28
Figure 14: A Side Cutter And A Stripper Are Some Of The Tools Used In This Experiment. ...... 30
Figure 15: A Cable Tester............................................................................................................ 32
Figure 16: Interfaces On SWT3000 And The Way It Is Commissioned. ....................................... 40
viii
PREFACE
This book is an industrial training report about the training I received at Uganda Electricity
Transmission Company Limited in partial fulfillment of the requirements for the award of a
Bachelor of Science degree in Telecommunication Engineering.
It entails the introduction of industrial training, the history, structure and organization of
UETCL. It also covers the theory of all the work covered during this period, the detailed
procedures of the practical work done and the theory on communication given by the
communication engineers at the communication workshop. Lastly, it looks at the challenges,
recommendation as well as conclusion on the entire industrial training process.
1
CHAPTER ONE:
BACKGROUND OF THE ORGANIZATION AND INDUSTRIAL TRAINING
PROGRAMME
1.0 Introduction
This chapter covers the background information of the organization and that of Industrial
Training at Makerere University. It also gives a brief description on the departments of
UETCL but with more focus on the ICT department.
1.1 Background of the industrial training Programme
The Programme was designed to provide the Makerere university students with practical
and hands on experience and expose them to employment opportunities in various
agencies, government, and private organizations. All stakeholders in the university
education recognize its invaluable contribution to the quality of university training.
Industrial training as adopted by the education council means any approved field based
practical work carried out by staff and students for the purpose of teaching and or carry
out research in places outside university control. The University also noted that through
industrial training, the potential employees are enabled to voice their ideas about the
competencies, skills and knowledge they would find useful in the field.
1.2 Objectives of the industrial training
 To enable students experience real life situations as they expected to work in when
they graduate.
 To enable students apply the principles and techniques theoretically learnt into real
life situations that require problem solving.
 To develop students understanding of work ethics, employment demands,
responsibilities and opportunities.
 To provide an opportunity for students and academic staff to interact with
stakeholders and potential employers to appreciate field situations that will also
generate information for curricula review and improvement.
2
1.3 Background of the organization
UETCL is a public limited company, which was incorporated on 26 March 2001 under
the PERD statute and companies under the power sector reform and liberalization policy
as one of the three arms partitioned from UEB.
UEB, which was the only electricity board, was unbundled into UEGCL for generation,
UETCL for transmission and UEDCL for distribution of electricity. In addition, an
independent authority known as ERA was established to regulate and overview the
activities of these different arms.
Owned by the Government of Uganda represented by the Ministry of Finance, UETCL
started its operations on1st
April 2001 under policy guidelines by the Ministry of Energy.
Its core business is purchase of power in bulk from the generators and selling it to the
distributors.
1.3.1 UETCL vision
“To become a leading strategic business partner in the transmission and single buyer
business to support sustainable energy development in Uganda”
1.3.2 UETCL mission statement
“To dispatch, transmit quality and reliable bulk power in a viable and efficient manner.
To be an efficient and commercially focused single buyer actor”
1.3.3 Core values
 Self respect and respect for others.
 Transparency and integrity
1.4 Mandate of the organization
 Operation of a high voltage grid
 System operator
 Bulk power supply
 Power import and export
 Public Infrastructure Provider
3
1.5 Departments of the organization
1.5.1 The CEO’s Office
The CEO oversees the Company operations and heads the management team. He is
responsible for leading and developing the management team, developing management
plans, advising the Board of Directors on issues affecting the company, maintaining
efficient operations, and creating a mutual understanding between the organization and
public
The Deputy CEO assists the CEO in the general operation of the company including the
strategic development of the company. The responsibility of the Deputy CEO is to
provide strategic direction and ensure financial sustainability of the Company, ensuring
high customer satisfaction, external stakeholder confidence, and retention of competent
employees as well as having a special focus on efficient transmission and system
operations business.
1.5.2 The Corporate Service
This department is headed by a Manager and is divided into the Legal, Security and
Procurement sections. It deals with corporate services to enable the company achieve its
objectives by providing for all the legal needs of the company, services that lead to the
timely and efficient procurement of goods, works and services as well as provide security
services that shall safeguard all company resources.
1.5.3 Finance, Accounts and Sales
The Finance, Accounts and Sales department is headed by a Manager and is responsible
for ensuring finance and corporate efficiency. The department is divided into sections the
Energy Sales and Statistics and the Finance and Accounts sections, which are meant to
develop processes and systems that will be able to collect, utilize and safeguard the
Company business resources in accordance with the business objectives set by the Board.
4
1.5.4 Internal Audit
This department is headed by a Manager and operates as a service to management by
measuring and evaluating the effectiveness of risk management, control,
and governance systems. This function incorporates the business planning processes, aids
the company board and audit committee in achieving business goals without undue risk.
1.5.5 Operations and Maintenance
It is responsible for the operation and maintenance of the grid. The Manager Operations
and Maintenance heads the department, which comprises Maintenance, Control, and
Protection sections. Its main mission is to operate and maintain the transmission grid
assets and local dispatch facilities in a safe manner in accordance with International
Prudent utility Practices.
1.5.6 Planning and Investment
The department is comprised of the Planning, Civil, Mechanical Engineering, Safety and
Services sections. It is also headed by a Manager and exists to develop and implement
power purchase and transmission plans, to meet the future electricity demand of the
country and to Provide transport services in line with company strategic objective.
1.5.7 Projects Implementation
The Department is responsible for implementing Power System Projects and is headed by
Manager and the Project Implementation department comprises Environment and the
Engineering Projects sections.
UETCL projects are developed in different phases; Power System Planning, Feasibility
studies and Implementations. The mission of this department is to meet expectations from
external stakeholders and the Board.
1.5.8 Human Resource and Administration
The Human Resource and Administration is headed by a Manager Human Resource and
Administration and is responsible for the Organizational planning and objectives of
5
the internal processes, employees and external stakeholders. The department has two
sections i.e. Human Resource and Administration and its mission is to ensure that human
resource is matched to the needs of the organization and is effective and to develop and
maintain a professional image of the Company.
1.6 Department, section, station attached to and duration of the training
The field attachment was done from UETCL’s Lugogo yard in the Communication
section under the ICT Department. The internship season lasted for a period of 10 weeks
from 2nd
June to 8th
August 2014.
1.6.1 Focus on the ICTD department
The ICT department is headed by a Manager ICT and is composed of the IT and
Communication sections.
1.6.1.1 Mandate
 To develop an appropriate and secure information and communication technology
infrastructure aimed at managing information collection, processing and
dissemination, monitoring and assisting users to maximize the utilization of
computers.
 To improve the communication network for reliable transfer of data and speech
1.6.1.2 The mission
Our mission statement is ‘to provide information and communication systems for the
Company in line with corporate objectives’.
1.6.1.3 Objectives
 Control of life cycle cost through standards based on ICT Policy
 ICT Security at a sufficient high level
 Provide reliable and timely information to customers and stake holders
 Provide a reliable ICT infrastructure
6
 Develop an ICT policy and Strategy and secure ICT environment (virus free and
intrusion proof).
 Ensure high availability of the telephony and SCADA communication systems.
1.6.2 Focus on the Communication section.
This is one of the two sections under the ICT department and is under the Principal
Communication Engineer assisted by the two Senior Communication Engineers that help
the organization in the daily running of the section.
This section operates an integrated communication network structured to efficiently
support data, telephony, and tele-protection interfaces.
1.6.2.1 Mandate
 Provision of reliable power supply to essential loads
 Facilitation the Optic Fiber business
 Provision of communication links and interfaces
 Provision of reliable speech infrastructure within company network
1.7 UETCL Organizational structure
Manager Corporate service
Manager Finance, Accounts and sales
Manager ICT department
Manager Internal Audit
C.E.O Manager Operations and Maintenance
Manager Planning and Investments
Manager Projects Implementations
Manager Human Resource and Implementation
Figure 1: Organizational Structure of UETCL
7
1.8 ICT Departmental structure
Figure 2: Structure of ICT Department
ICT MANAGER
Communications Engineer
TechniciansTechnicians
Communications Engineer
SCE
POWER SUPPLIES, MICROWAVE, AND OPTICAL FIBER
Principal communication
Engineer
Principal IT
SCE
PLC, RADIO AND TELEPHONY
8
CHAPTER TWO
LITERATURE REVIEW
2.0 Introduction
This chapter gives a detailed theoretical description of the main engineering fields
handled during the training. It is aimed at equipping the reader with prior knowledge on
the practical work done as described in Chapter three of this report.
Here in is also any theoretical information provided by the instructors during the training
especially through the various lectures availed to the interns. This is backed by the
author’s research carried out on the relevant topics covered during the training all
summarized in this chapter.
2.1 Communication Basics
This mainly elaborates on what communication, the different types and defines a
communication link and its illustration.
2.1.1 Communication
This refers to the transfer of processed data from one point known as a source to another
known as a sink through a communication medium.
Types of communication
There are three main types of communication i.e. verbal, non-verbal and written
communication.
 Verbal. This exchange can be physical (face to face), by telephone, by television,
radio or any other media may be involved.
 Non-verbal. This refers to the transfer of information without using voice nor by
writing i.e. by use of body language, gestures or even by the way one acts towards the
person to whom he or she is communicating.
9
 Written. This refers to either communication that occurs by transfer of reading or
written material in soft or hard copy. The media used in this case includes books,
letters, magazines, e-mail, graphics, internet, maps etc.
2.1.2 A communication link
This refers to the whole system necessary for communication to occur i.e. a source and a
sink that are connected by a communication medium as illustrated below.
Communication Link
Figure 3: Illustration of A Communication Link
The source and the sink are the main terminal equipment for transferring and receiving
data respectively. These may include multiplexers, switches, telephones, modems,
computers, television sets, and radios among others.
The media refers to the pathway through which information flows from the source to the
sink. These may include copper, fiber, PLC and free space.
It is important to note however that the communication link used can be Simplex (a
transmitter); where information is only be sent but no feedback is received directly. A
case in point is communication by radio and TV. However, it can also be Duplex (a
transceiver) where information is sent to the receiver and the sender receives feedback
immediately for example, communication by telephone.
Concisely, communication can only be possible in presence of a communication link i.e.
a source, a medium and a sink.
SOURCE SINK
10
2.2 Communication Media
This is about the various pathways through which information flows for communication
between the source and the sink to occur. Described below are the main forms of
communication media i.e. optic fiber, coaxial cable (copper), PLC and free space.
2.2.1 Optic fiber
This is the type of communication medium in which data is transferred from one point to
another by use of a beam of reflected light rays.
Figure 4: An Illustration of The Principle Of Operation Of Optic Fiber.
Types of optic fiber
There are various types of optic fiber used at UETCL depending on the method of
transmission and termination. These include,
 ADSS (All Dielectric Self Supporting); this is usually used when a tower is already in
place.
 OPGW (Optical Power Ground Wire); in this case the fiber is embedded in the earth
wire for the power line
 Sky wrap; a special machine is used to wrap it on a power line
 OPFC; this is the type of fiber which is embedded in a phase conductor.
Modes of transmission of optic fiber
There are two modes of transmission of optic fiber i.e. single mode and multi-mode
transmission.
11
Single mode transmission
In this mode of transmission of optic fiber, light is carried directly in a single strand such
that light waves are of the same mode but with different frequencies and are distributed in
such a way that they give a single ray of light.
The following features are characteristic of single mode transmission
 A single strand.
 Light can propagate at wavelength of interest i.e. 1300-1550nm.
 It allows a higher transmission rate and up to fifty times more distances.
 It uses a relatively smaller core i.e. 8µm-10µm
 It has less attenuation and the highest transmission speeds.
Multi-mode transmission
This mode of transmission is used for communication over short distances and has data
length rates of 10Mbps to 10Gbps for a length of up to 600m.
The following are features associated with multi-mode transmission.
 The fiber has a slightly bigger diameter i.e. 50µm-60µm
 It is less expensive and easier to work with.
 It is suitable for systems with short optic links.
 It uses two fibers.
 It covers higher band widths at high speeds of 10-100mbps
Activities done on optic fiber
 Preparation
This involves removal of all the coatings to expose the fiber cladding for any
other activities to be done on the fiber. All the various layers of the fiber are
removed using a cutter, a striper as well as alcohol and clean wipes for cleaning
the fiber of any protective gel and keep it clean.
12
 Splicing
This is the process of joining two optic fibers together such that there is continuity
of the cable for transmission and further use.
Figure 5: Layers of Optic Fiber
There are two types of splicing i.e. arc fusion and mechanical splicing.
Under arc fusion, an arc fusion-splicing machine is used to align the two fiber
ends before an arc is used to weld the protective glass onto the spliced end of the
fiber. This enables continuity of the cable with minimum optical losses of 0.00-
0.20 dB.
Mechanical splicing occurs in such a way that alignment devices simply hold two
fibers in an aligned position for light to pass through.
 Measurement of optical length
This is done using an OTDR machine i.e. one of the ends of the cable is spliced to
the pigtail and the other end connected to the OTDR machine. The relevant
parameters are set onto the OTDR before the optical length and losses are
displayed on the screen of the OTDR.
Advantages of optic fiber over other media
 It covers greater bandwidth.
 It has lower attenuation and covers greater distance.
 It is more secure since it does not radiate signals and is extremely difficult to tap.
Core Cladding Coating Strength Jacket
Members
13
 It is immune to electromagnetic interference and reliable.
 It is of lightweight and more durable.
 Easy migration from copper to optic fiber.
 It is standard and relatively cheaper to maintain.
2.2.2 Copper
It would be realistically useless to talk about communication media and neglect the role
played by copper in data communication. All the other communication media are not
complete in use if copper is not used since it is always necessary during termination of
the media to the final equipment to be used such as switches, routers, computers,
telephones etc.
There are two forms of coaxial cables i.e. shielded twisted pair (STP) and unshielded
twisted pair (UTP). The former is the mostly used at UETCL and some of the examples
of this cable include CAT6a, CAT6 and CAT5e.
CAT6 cable is a standardized cable for Gigabit Ethernet and other network physical
layers compatible with CAT5 and CAT3 cables. This cable features more stringent
features for crosstalk and system noise and provides performance of up to 250MHz
though CAT6a is characterized to 500MHz.
It is normally terminated in 8P8C modular connectors of either T568A or T568B pin
arrangements and allows a maximum length of about 100 meters for 10, 100 and 1000
BASE-T whereas the 10G BASE-T can only be about 55metres long.
It must be properly installed and terminated such that it’s not bent or kinked tightly, wires
not untwisted and the outer jack ought not be stripped back more than 0.5 in. cable
shielding is also necessary to improve its performance in high electromagnetic fields and
reduce the corrupting effect of EMI on the cable’s data.
During the training, the intern used and got familiar with the following types of data
communication cables.
 Straight cable
14
 Crossed cable
 Rollover cable
 Serial cable (dB sub 9 connector pin out)
Standards of cable termination and their color-coding
There are two standards of cable termination namely;
 T568A and
 T568B.
CAT6 has four twisted pairs and each of these pairs has a dominant colored wire and then
a dominant color-white striped wire. These are arranged differently when terminating
using the two standards as illustrated below.
T568A
1- White green
2- Green
3- White orange
4- Blue
5- White blue
6- Orange
7- White brown
8- Brown
T568B
1- White orange
2- Orange
3- White green
4- Blue
5- White blue
6- Green
7- White brown
8- Brown
15
Straight cables
These are cables that have pin assignments on each end of the cable that is Pin1 on one
connector goes to Pin 1 on the other connector and similarly for all the other pins.
They are fabricated by connecting the T568A standard directly onto the T568A standard
on the other end of the cable or the T568B standard directly onto the T568B standard on
the other end as illustrated below.
1………………………………………………1
2………………………………………………2
3………………………………………………3
4………………………………………………4
5………………………………………………5
6………………………………………………6
7………………………………………………7
8……………………………………………...8
Straight cables are used for connecting equipment and devices of different types such as
Connecting a switch to a computer.
Figure 6: A Straight Cable Connected Using T568B Mode.
16
Crossed cables
These are similar to crossed cables except that TX and RX lines are crossed at opposite
ends on either end of the cable.
This is implemented by connecting a T568A standard to a T568B and vice versa as
illustrated below,
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
They are used for connecting devices of the same type, for example a computer to
another computer.
Rollover cables
These are also known as yost cables, which have pin arrangements on each end of the
cable. It is attained by connecting a normal T568A OR B standard on one side and then
an inverted T568A or B standard on the other side as illustrated below.
17
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
Rollover cables are not intended to carry data, but to create an interface with the devices
hence they are used to connect to a device’s console port to make programming changes
to the device.
Figure 7: RJ45 cable plugs and an illustration of the CAT6 cable with the plug.
Serial cable
A serial cable is one used to transfer data from one device to another by serial
communication either synchronously or asynchronously. The commonest standard is
RS232 though there are others such as RS 485, RS 422 and others
In a serial cable, the kind of connector used depends on the serial port used, maximum
length as well as the features on the transmitter and the receiver. The band rate on the
18
cable and the capacitance and electrical impedance of the cable must also however be put
in consideration.
The serial cables can be 9 pin, 15 pin or 25 pin and the following connections are all very
possible; 9pin-9pin, 9pin-25pin, 25pin-25pin etc.
dB Sub 9 Female connector pin out
This cable helps the user to connect any device with an interface of dB sub 9 male pin out
to another of the same kind as shown in the figure below
Figure 8: Arrangement of The Pins On The Male And Female Pin Outs.
1-DCD-Data Carrier Detect
2-RXD-Receive Data
3-TXD-Transmit Data
4-DTR-Data Terminal Ready
5-GND-Signal Ground
6-DSR-Data Set Ready
7-RTS-Request To Send
8-CTS-Clear To Send
9-RI-Ring Indicator
19
The most essential for serial communication however are 2, 3 and 5.
Below is the mode of connection of a dB sub9 female-to-female using a CAT6 cable on
which a continuity test was done during the training.
Plug A Plug B
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
It was realized that there was no continuity for pin 9 for both plugs implying that the ring
indicator was not connected.
Copper is therefore very ideal for data communication among any other communication
media.
2.2.3 Power Line Carrier (PLC)
Power line carrier is a medium of communication that involves carriage of signals over a
power line. Being a power company handling high voltage transmission of up to 132kV,
UETCL is able to transfer data using this rare communication medium in Uganda.
PLC is mostly used for tele protection thought it is also essential for SCADA, as well as
voice communication at UETCL. Its persistent application despite the introduction of
optic fiber is because of its reliability, cost effectiveness and data transmission over long
distances. Due to limited bandwidth, it is however used in places where there is no
optical fiber and in areas where there is optical fiber, it is only used as backup.
20
How PLC works.
The PLC system involves the application of line traps to block high frequencies of 100-
500 kHz at the substation while the 50 kHz is released for power transmission.
The high voltages are then passed through a CVT (capacitor voltage transformer) to step
down extra high voltage signals and provide low voltage signals for measurement,
communication or to operate a protection relay. It is also used to filter high frequency
communication signals from power frequency.
The signals are then passed on to the line matching unit (LMU) which consists of a drain
coil , isolation transformer, an earth switch and a tuning device which is a combination of
R-L-C circuits that act as filter circuits. The LMU helps to connect the audio-radio
frequency signals to the transmission line or PLC terminal.
From the LMU, the high radio frequency signals are carried through a coaxial cable at a
resistance of 75Ω to the terminal equipment for conversion to much smaller audio
frequencies of between 0-4 kHz that are then put to use for SCADA, tele protection,
voice .
Two power phases are used for the PLC system as illustrated below:
21
Line traps
SUBSTATION.A SUBSTATION B
Voice
Ethernet
Tele protection
SCADA
Figure 9: A Schematic Illustration of A Power Line Carrier System.
2.2.4 Free space or radio communication
Under this indigenous medium of communication, signals are generated and then
transmitted through air or free space. This therefore justifies the need for a microwave
antenna to project the signals to their destination. This medium is however no longer used
for communication at UETCL since more effective and efficient media with high
capacity have replaced its application in UETCL.
The microwave antenna is connected to the radio by a wave-guide through to the outdoor
unit. The outdoor is then connected to indoor unit by multicore cable.
CVT CVT
LMU
Terminal equipment
22
Micro wave dish (antenna)
Wave-guide
Multicore cable
Figure 10: Connection of the microwave radio system.
2.3 Multiplexers
A multiplexer is a data communication device, which selects one of several analog or
digital input signals and forwards it into a single line. A multiplexer of 2n inputs has n
select lines used to select which input line to send to the output. They are mainly used to
increase the amount of data that can be sent over the network with in a certain amount of
time and with. It is thus also known as a data selector.
An electronic multiplexer makes it possible for several signals to share one device or
resource i.e. analog-digital converter or one communication line instead of having one
device per input signal.
Conversely, a Demultiplexer (demux) takes a single input signal and selects one of many
data output lines that is connected to a single input. Therefore, a multiplexer is always
used with a complementary demux at the output end.
Outdoor Unit
Indoor Unit
23
There are various types of multiplexers though two are used at UETCL i.e. UMUX1500
and FMX-2S, which is used along with HIT7025 for efficient, reliable and effective
communication in the company.
Features of UMUX1500
 It is a multi-service access multiplexer.
 It has both traffic interfaces and transmission interfaces.
 It can handle a number of interfaces from nx64Kbps to STM 1 one rack or chassis.
 UMUX1500 has the same management tool for configuration, alarms and
faultfinding.
UMUX uses different cards for various purposes such as providing an optical interface
and connection to S-Bus, P-Bus and U-Buses as shown in the illustration below.
Nebro SYNUF
S-BUS
SYNAC
P-BUS
COBUX
U-BUS
Figure 11: Structure of UMUX
S-SDH
P-PDH
24
Features of FMX-2S+ HIT7025
 HIT7025 handles transmission interfaces while as FMX-2S handles access or traffic
interfaces
 It uses different management tools.
 It also has different racks or chassis.
Figure 12: Structure of Hit 7025
2.4 Power Supplies
These electronic devices supply electric power to an electronic load. They convert one
form of energy to electric energy to provide power for running different electrical and
communication equipment. Most telecommunication equipment use standard dc power of
-48V while 110V dc powers protective devices such as relays.
Examples of power supplies at UETCL
 DC power supply from batteries
 AC power supply from hydro-electricity.
 Generators
Generators
A generator is a device that converts mechanical energy into electrical energy. There are
a number of standby generators at UETCL that are used for ensuring constant power
supply to the communication equipment. Batteries that provide power in case of failure of
generators to start when power goes off also back these up.
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Types of generators
 AC generators
 DC generators
Main components of a generator
 Starter motor
 Engine
 Alternator
 Fuel system
 Voltage regulator
 Cooling and exhaust systems
 Lubrication system
 Starter battery
 Control panel
 Frame
How a generator works
The engine is started, fuel comes in and spreads on the nozzle injectors, a spark is
realized and due to high pressure, air is compressed and fire starts. The piston starts
moving and the engine runs producing mechanical energy.
The rotor moves in a magnetic field generating an emf that induces current flow. The
automatic voltage regulator (AVR) to produce output verifies that the voltage realized is
normal otherwise, no output is realized.
An automatic changeover such as CT1125 composed of contactors is also connected for a
standby generator.
Faults on a generator
Failure to start
26
Possible causes
 Blocked air system
 Lack of fuel or Locked fuel system
 Control mechanism
 Flat starter battery
 Faulty starter motor
 Faulty fuel solenoid
 Clogged fuel filter
Generator stopping during operation
Possible causes
 Fuel is used up
 Low oil pressure
 No output from AVR
 Faulty rotor
 Over loading
2.5 Telephony
This engineering field deals with transmission of voice, data or fax between parties at a
given distance. It is the mandate of the communication section of UETCL to provide a
reliable speech infrastructure. This section therefore has the responsibility to maintain a
reliable and constant communication network for all the branches of the company.
Differently from the traditional way of connecting callers directly by creating a loop for
two people to communicate by phone, nowadays a switch does the industrial work
through a PAX or a PABX or even both depending on the destination of the call. The
PAX is responsible for connecting local callers while PABX connects any calls beyond
the specified LAN. The switch is able to identify the caller by using the caller’s
identification number before connecting it to the requested number.
27
UETCL mostly uses IP telephony that allows connection over an internet protocol
throught its wide VOIP network.
UETCL’s VOIP network
This is composed of simply two elements i.e. the switch and the IP sets. The switch
provides an interface onto which all the IP sets are connected. IP sets include computers,
telephones etc.
Functions of a switch.
 It provides the dialing tone
 It gives DTMF tone
 It provides the numbering plan
 It provides a busy tone
 It gives the ringing tone
 It provides the ringing signal
 It times the call duration [billing or providing tickets]
 It provides a connection for the calls
Types of switching
Circuit switching
This is a type of switching in which there is establishment of an end-to-end connection to
create two network nodes. A circuit switched network is ideal for application within
limited points but in case of multiple locations and large amount of data to transmit, it is
more effective to use packet switching.
Advantages of circuit switching
 No degradation of the response time
 Lack of buffers in the data path
 Possibility of all optical data paths
 Higher switching capacity
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 It’s simple and intuitive
 Has simple admission control
Packet switching
It is a mode of data transmission in which a message is broken into a number of packets
that are sent independently over whatever route is optimum for which each packet is
reassembled at the destination. All this is done over an internet protocol network.
Packet switching also allows the use of an IP address.
An IP address; this refers to the unique identification of a device on an IP address. It
consists of 32 binary bits broken down into four octates. The octates range from
00000000-11111111 and are separated by a dot e.g. 172.16.81.100
For an IP address to be complete, it ought to be given a subnet maskthat helps to define
which part of an address is the host or the network. Example of a subnet mask is
255.255.0.0 meaning that the first two octates are the network and the other two are the
hosts.
Communication server switching
Gateway/PSTN
Billing server
Standby comn.server
Router
Figure 13: A Schematic Illustration of the VOIP Network of UETCL.
29
CHAPTER THREE
PRACTICAL WORK
3.0 Introduction
This chapter entails the apparatus used, the objectives, procedures, observations, and
conclusions of the tests, measurements, fabrications, experiments and any other practical
works done during the training. Under this chapter also is the other work done in that
period that the trainee deemed relevant though he never had hands on operation on it.
3.1 Optical Fiber cable preparation, splicing, and measurement of optical length
3.1.1 Objective
To determine whether there was continuity of the cables
3.1.2 Apparatus
 Absolute ethanol 99.8%
 Strippers -Pros Kit 8PK-3002D
-Ripley Miller F0103S
 A knife
 Kim wipes
 A high precision cleaver CT-30 Fujikura
SN.83246
 Arc fusion splicing machine FSM-50S
SN.10779
 A protective sleeve
 A pig tail FC
 Optical Time Domain Recto meter
MU 2500A (DISPLAY UNIT)
SN 6200593001
MW 9076C
SN 6200462938
30
Figure 14: A Side Cutter And A Stripper Are Some Of The Tools Used In This Experiment.
3.1.3 Procedure
 The knife was used to remove the hard outermost sheath for a small length to
expose the inner sheath, the red thread, and the inner sheath was also stripped off
carefully using a knife to avoid cutting the inner insulation of the fiber
 The white protective tubes, the strength member and the thread were also cut off
leaving the four tubes each having six cores.
 The blue tube was randomly selected, the striper used to remove the coating and
expose the cladding of the cores that were well cleaned using the Kim wipes.
 The cores were separated, one of them randomly selected. It was further striped
and well cleaned with the absolute ethanol.
 It was then inserted into the high precision cleaver to cleave it at 900
.
 It was carefully placed into the splicing machine and clipped.
 The pigtail was also stripped and well cleaned. It was also carefully placed into
the splicing machine ensuring that there is minimum separation between it and the
optical fiber.
 The cover of the splicing machine was then placed back and the set button pressed
for splicing to take place. The whole process was viewed on the display unit of
the splicing machine.
 The other end of the pigtail was carefully and properly connected to the OTDR.
The necessary parameters such as wavelength of 1310nm were set and the start
button pressed to measure the optical length.
 The optical length and the corresponding losses were displayed on the screen.
 The experiment was repeated for all the three optical cables.
31
Table 1: Table of results
Wavelength λ (nm) Optical length (km) Total optical loss (dB)
1310 1.368 0.02
1310 1.857 0.02
1310 0.302 0.02
3.1.4 Conclusion
The experiment was able to meet its objective since the optical length was successfully
measured implying that there was continuity of all the three cables.
There is need to do more experiments so as to attain more experience since I was forced
to continuously repeat the experiment as a result of poor cleaving of the fiber as
displayed on the splicing machine.
The pigtail used at first was also of poor quality or had some irregularities since it gave a
high optical loss of over 0.25dB before I later changed and used a better one that gave a
relatively lower loss of 0.02dB
3.2 Termination of CAT 6 cable with RJ45 cable plug
3.2.1 Objectives
 To terminate working straight, crossed and rollover data cables.
3.2.2 Tools used
 CAT6e cable [DUO4017040M]
 RJ45 plugs
 A crimping tool. [6p 8p 4p San Tus]
 A cable tester [MASTER XT-468]
3.2.3 Procedure
 Using a crimping tool, the ends of the cable were trimmed to ensure that they are
straight and wires are of equal length
 The crimping tool was then used to strip off a small length of the CAT6e cable’s
jacket
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 The four twisted pairs were separated from each other, each pair unwound to
make eight individual wires, which were flattened and straightened.
 Holding the cable with wire ends facing away from me, moving from left to right,
the wires were arranged in a flat side by side formation in the order; white orange,
orange, white green, blue, white blue, green, white brown, brown for the T568B
standard.
 The RJ45 was held with its pins facing away from me and the plug clip side
facing down. The flattened, arranged wires were carefully inserted into the
connector until the wire ends were firmly inside the plug.
 Carefully placing the RJ45 cable plug into the provision for the 8p, the crimping
tool was used to force the plug pins into the inserted wires for contact to be
established.
 After the first termination was completed, the process was repeated on the
opposite side of the cable to form a complete straight RJ45 patch cable.
 The above procedures were then repeated for the termination of the crossed cable
as well as rollover cables. This was done by merely altering the color codes as
well illustrated in chapter 2. The cables were then tested using a cable tester as
explained below.
3.2.4 Cable testing
After the termination was completed on both ends of the cable, the two ends of the cable
were placed into the terminals of the cable tester to test for continuity. The tester was
then switched on.
It was observed that all the eight pins were continuously connected for the straight,
crossed and rollover cables as elaborated in chapter 2, implying that the cables were
properly terminated and were ready for use.
Figure 15: A Cable Tester.
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3.2.5 Conclusion
The process of cable termination was successfully completed however it was noticed that
it requires a high level of precision especially during the arrangement and insertion of the
wires into the cable plug. If not properly arranged, the aim of the experiment will not be
achieved.
It is also important to note that the wires should be well trimmed to ensure that they are
well flattened and even. If the crimper doesn’t automatically trim the wire ends upon
termination, carefully cut the wire ends to make them as flush with the connector’s
surface as possible.
A small part of the cable jacket should be striped so that all the exposed wires are
inserted inside the cable plug. I had to repeat the practical because I had not done this
proper termination.
A successful cable termination is very important to provide means for data transfer or
data sharing and creating an interface for different devices.
3.3 Termination of the dB sub 9 connector pin out serial cable
Analysis on an already terminated dB Sub 9 female connector pin out was first carried
out to establish continuity of the copper cables and determine the interconnection of the
different pins as shown in chapter 2.
3.3.1 Objectives
 To analyse and test for continuity of the cable
 To terminate a working similar dB sub 9 serial cable
3.3.2 Tools used
 CAT 5e;
 Two female dB sub 9 connector pinout plugs
 Soldering iron
 Solder wire
 A Digital multimetre; FLUKE 787 PROCESSMETER
34
 A side cutter
 A stripper
3.3.3 Procedure 1 (continuity test)
The two ends of the serial cable provided were labeled A and B respectively using a
masking tape.
End B was kept constant i.e. by connecting one probe of the multimeter to pin 1.
With the meter set to the resistance parameter, the other probe was varied through all the
pins of plug A to establish continuity of the pins on the two plugs and he result noted.
The process was continued for all the 9 pins of plug B and the following results the were
obtained:
A B
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9 (no continuity)
3.3.4 Procedure 2 (Termination of a new CAT 5e cable)
The cable jacket of the CAT 5e cable provided was removed using a side cutter and the
four twisted copper cables exposed for a very short length that can be accommodated
inside the plugs.
A very short length of the copper wires was stripped to expose the conductor for
soldering.
35
The wires were flattened and straightened to ensure a common length.
For the constant plug B, the conductors were randomly soldered onto the pins 1-8.
(pin 9 was neglected since it showed no continuity in the test in procedure 1)
By carefully observing the colour coding of the wires already soldered on plug B, the
exposed conductors were carefully soldered to their corresponding pins using soldering
iron and the solder wire.
The order of the results obtained in the continuity test above was maintained to come up
with a working serial cable.
3.3.5 Cable testing
The cable was then tested by connecting it to one of the UMUX cards and the other end
to a computer and it was able to transmit data from the UMUX to the computer.
3.3.6 Observations and conclusion
It was observed that the cable could transmit data from the UMUX card to the computer
however it was only one way i.e. it would only transmit data when the constant plug B
was connected to the computer otherwise there was no data transmission.
More care should have been taken especially when soldering the wires on the pins of the
plug A by matching the right wires basing on the color codes.
More soldering skills however were also required to come up with better product.
The experiment was able to meet its objective since continuity of all the pins other than
pin 9 was established. In addition, the termination was a success since the intern was able
to make a working serial cable.
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3.4 Termination on a Krone block
3.4.1 Termination with a 25 twisted pair cable
3.4.1.1 Objective
 To come up with a correctly terminated krone block with a 25 twisted pair cable.
 To master the color coding and order of termination of cables on a krone block.
3.4.1.2 Tools used
 A side cutter
 A krone punch tool
 A 25 twisted pair cable
 Krone blocks
3.4.1.3 Procedure
The side cutter was carefully used to remove the jacket of the cable for an appropriate
length considering the length of the case on which the terminated blocks were to be fixed.
The twisted copper wires were then carefully separated and arranged in the order of
termination on a krone according to the color coding described in chapter 2
By terminating each pair onto the block using the krone punch tool, the 1st
ten pairs were
terminated onto one krone, the next ten on another krone and the last five on a half a
krone which was completed by five from another cable.
The krone blocks were then terminated onto the krone case.
3.4.1.4 Conclusion
More practice to master and be more efficient was required since only one experiment
was carried out.
The experiment was a success since the work done postulated the already terminated
krones in the krone case available.
37
3.4.2.1 Decommissioning a krone case
3.4.2.2 Objective
To remove the already terminated krone blocks from the krone case and detach the
copper wires from the blocks for cleanliness purposes of the store as well as recycling the
krone blocks removed.
3.4.2.3 Tools used
 A krone punch tool
 A side cutter
 A small screw driver
3.4.2.4 Procedure
The small screw driver was used to detach the krone blocks from the krone case by
inserting it on either ends of the block and then pulling the block out of the case. This
procedure was used to detach all the ten blocks, which were on the case.
The krone punch tool was the used to release the terminated cables from the block by
using the hooked part of the tool.
The above procedures were repeated for all the blocks before the cables were disposed
and the krone blocks attached onto the case for recycling.
3.4.2.5Conclusion
The experiment was a success since some skills were obtained on decommissioning of
the krone case and in the end; the store was cleaned up.
More practice would however help to attain more skills and efficiency in performing this
task.
38
3.5 Others
This section involves any other activities and study visits that were carried out during the
training in which the intern was not allowed to have hands on experience for
precautionary purposes but we acquired much knowledge and skills about these different
activities as well as the equipment and their operation.
3.5.1 Study visits carried out during the training
3.5.1.1 A visit to UETCL Head office at Hannington road
As part of introduction to the communication system of the company especially the
telephony (VOIP) network, Mr. Job Musalwa and Ms. Carol Ssekamatte took the interns
along with them to the telecommunication control room at Head office and below are
some of the equipment checked when in the control room.
More advanced communication media such as coaxial cable and optic fiber, microwave
radio, the main switch that is connected to main communication server, the billing server,
the PSTN or Gateway server and other communication equipment are connected. It is
from this switch that the communication system is transmitted to the rest of the branches
and substations of UETCL.
A charger for maintaining constant power supply to the telecommunication equipment.
This is necessary to ensure that the communication system of the company is never cut
off at any one time for efficiency purposes.
The multiplexers for enabling various input and output conversions for a single and
multi-line input and output, the patch panel that enables various terminations to and from
the switch as well as the krone case for termination of the copper cables. Also checked on
were the modems that enable conversion between optical and copper transmission.
3.5.1.2 A visit to Muyenga tank hill Communication station
This station was originally managed by UEB and used for providing signals for radio
communication for the various sub stations. However when UEB was unbundled,
39
UETCL attained the mandate to use this station for its own communication as well as
leasing out its services to any other optical fiber clients.
Mr. Cranmer Rwagize took the interns along with him to check out on this station as he
supervised the decommissioning of some equipment belonging to One-Solutions
Company. The equipment decommissioned was an Ethernet radio connected to the switch
by a CAT6 cable.
Checked at the station also were the multiplexer UMUX-1300, the microwave radio,
UHF radios and VHF radio, a battery charger, battery bank and standby generator with a
changeover unit to maintain constant power supply to the communication equipment.
3.5.1.3 A visit to Lugogo substation and control center
Together with Mr. Cranmer Rwagize, the interns visited Lugogo substation located along
Edward Mugalu road and the following equipment were checked on.
The main components of a substation such as transformers which were mainly step down
i.e. 132kV~33kV, 132kV~11kV and 11kV~415V. In addition, at the substation were
circuit breakers, isolators, relays, DC supply sources and a Standby Generator for backup
ac supply.
The PLC, line traps, LMU, CVT, optical fibers such as OPGW, Sky Wrap and ADSS
together with ODF were also seen at Lugogo SCADA.
3.6 Analysis of the tele protection equipment (SWT 3000)
Tele protection is a way of using communication equipment to monitor and control the
safety of power lines. The equipment is usually connected at various substations where
there is fiber to monitor the power line between the stations. These equipment send
signals to each other in case of any fault in the lines, alarms are then automatically set for
any action to be taken by the relay, which in turn operates a circuit breaker.
40
Figure 16: Interfaces On SWT3000 And The Way It Is Commissioned.
3.7 Evaluation
The interns participated in the evaluation process of some bidding companies for the
purchase of some equipment to be used at the store. The equipment in question involved
a drilling machine, a spanner set, digital millimeters and ladders.
The companies that had applied for the purchase of this equipment involved MTE, TASS,
SAS, SECH among others.
The interns were engaged in verifying the technical compliance of these companies’
equipment with the laid specifications of the communication section. The process was
successfully completed under the guidance of Ms. Carol Ssekamatte and the companies
were forwarded for financial compliance checks.
41
CHAPTER FOUR
OBSERVATIONS, RECOMMENDATIONS AND CONCLUSION
4.0 Introduction
This chapter summarizes the entire industrial training, the whole experience attained as
well as the challenges faced in the training. It also tackles the recommendations that the
intern deems necessary to address to the university and the company about industrial
training. Finally, the intern gives conclusive remarks overall industrial training process.
4.1 Achievements
4.1.1 Practical skills
 More knowledge and skills on communication basics, communication media,
multiplexers, power supplies and telephony.
 Skills on termination of different types of network cables such as straight, crossed,
rollover and serial cables.
 Skills on preparation, splicing, termination and measurement of optical length for
optic fiber.
 Knowledge on termination as well as decommissioning from a krone case.
4.1.2 Interpersonal skills
 The intern learnt and gained experience on how to effectively work as team player
to gain great results. This was easy to attain because every assignment given was
done in a group with the rest of the interns guided by the employees of the
company.
 The intern also learnt how to relate with the workmates as well as his supervisors
and the other employees at work.
 The intern learnt how to share challenges at work with the workmates as well as his
seniors at work. This helped him not to face major step backs throughout the
training period.
42
4.1.3 Communication skills
 I learnt how to communicate with my supervisors as well as my other seniors at
work in a way that reserves them the respect they deserve.
 I was also happy to learn how to address my workmates in order to yield the best
results most especially when we had a project to work on.
 The intern was also able to learn how to address small groups of people since we
used to have some departmental meetings and the interns were allowed to
participate and address their challenges as well as take part in suggesting the way
forward.
4.1.4 Others
 In addition to the above, the intern also gained skills on time management and being
punctual for work. The interns would also be given a certain duration with in which
to finish the assignments given during the training.
 The intern learnt how to cope with the rate of doing work in the 21st
century as we
would do some work with the employees and make sure we finish with them.
4.2 Challenges
 Like anyone else in a new environment, communication with my seniors as well as
fellow interns was a big challenge for the first week. However, it was fun getting to
know them and even make new friends in them as time went on.
 In some of the practical works done, the interns were limited from participating
though we were allowed to have a close observation. This was so in order to reduce
the risk of any danger befalling the interns since most of the work involved high
voltages.
 I faced a challenge of training with the busiest staff I have ever worked with. As a
result, sometimes we were neglected alone in the store while other times it was hard
to cope with the speed at which they were working but we later acquired a great
experience of a true engineer.
 Lack of a special documented Programme for the training. This was a big challenge
in a way that I would report for work on a particular day not even knowing what I
43
was going to do for that day. We were however able to familiar with this experience
and were always ready for any work that came up.
 The other minor challenge faced was securing funds enough to cater for my daily
transport and lunch. I thank God and my sponsors that I was able to overcome that
and never missed any single day.
4.3 Recommendations
Despite the great experience I had at UETCL during my two months of industrial
training, there are some issues I wish to address to both Makerere University and UETCL
that I believe would make the training more enjoyable when worked on.
4.3.1 To UETCL
 More engagement of the trainees practically will help increase the experience and
skills attained during this period.
 A special training Programme laid on paper would help the interns to prepare for
work and even yield better quality results that comes along with enough
preparation.
 Providing allowances for example lunch and transport allowances will encourage
the trainees to work even harder and reduce on time waste soliciting money for
transport and going out for lunch.
4.3.2 To Makerere University
 Helping students to find internship places. I believe the greatest institution in the
country can do better as far as getting her students internship slots than just issuing
an introduction letter to the students.
 Supervisors should always lay a timetable of when to supervise the students so as
the students can be aware and prepare for their visits at the places of training.
 More initiation to industrial training especially to students who are doing this for
the first time. This will help students be aware of what this period is all about and
what to expect during this time for better results.
44
4.4 Conclusion
This report is the product of a successful industrial training period. I say successful
because all I was able to meet all the objectives of this process thanks to the ‘best’ public
limited company in Uganda, UETCL.
It was my first industrial training of this kind but UETCL has made me feel like I have
done this for the whole of my lifetime. The experience, skills and character I have
attained through this period are enormous and will keep me going as I perceive my
carrier.
Through the stated challenges, I managed to go through this period successfully and
attained all the achievements stated above. I believe if the above stated recommendations
are put in consideration, it would ease this process for any party that wants to go through
it.
Lastly, I want to thank you for spending your precious time reading this small piece of
writing and I hope you were able to pick a word of interest. May the almighty Father
shower you with his wondrous benedictions.
45
REFERENCES
Prof. Dr. M. Zitterbart. 2004/2005.Basics of Communication and the
Internet
www.uetcl.com
www.keymile.com
w3.siemens.com/.../SWT-3000-Teleprotection-technical-data.PDF
w3.siemens.com/smartgrid/.../SWT-3000-Teleprotection.PDF
http://en.wikipedia.org/wiki/Power-line_communication
www.keymile.com/.../UMUX.../d1af978a-f24c-4b45-bb91-e37b021da3
en.wikipedia.org/wiki/Telephony
www.webopedia.com
en.wikipedia.org/wiki/Opticalfiber
46
APPENDIX 1
List of instructors I worked with during the training.
Mr. Kibuuka Yusuf, Senior Communication Engineer
Mr. Dauda Musinguzi, Senior Communication Engineer
Mr. Cranmer Rwagize, Communication Engineer
Mr. George Alioke, Communication Engineer
Mr. Job Musalwa, Communication Engineer
Ms. Carol Ssekamatte, Communication Engineer

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UETCL report

  • 1. i MAKERERE UNIVERSITY COLLEGE OF ENGINEERING, DESIGN, ART AND TECHNOLOGY SCHOOL OF ENGINEERING DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING BSc. TELECOMMUNICATION ENGINEERING A REPORT ON INDUSTRIAL TRAINING CONDUCTED AT UGANDA ELECTRICITY TRANSMISSION COMPANY LIMITED By Katunguka Jim 12/U/395 Dr. Dorothy Okello Mr. Cranmer Rwagize (Academic supervisor) (Field supervisor) Signature………………….. Signature………………….. ©June-August 2014
  • 2. i DECLARATION I, KATUNGUKA JIM, hereby declare that this is my original work and to the best of my knowledge, it has never been presented anywhere for any award of any Degree. Any part of this report that has borrowed knowledge from other sources duly acknowledges such sources in citations and references. Signature…………………………………………………………………………………………………….
  • 3. ii ACKNOWLEDGEMENT I thank the almighty God for the knowledge and wisdom imparted in me to successfully complete this industrial training and compile this report; He deserves all the glory and honor. I further thank Him for my parents and guardians who have provided me all the necessary support throughout all this process. My sincere appreciation also goes to my supervisors both at campus and at the organization for the advice, knowledge, guidance, direction offered to me. I would not have done anything without you. Thank you very much Dr. Dorothy Okello, Mr. Gerald Budigiri and Mr. Paul Bogere, the internship coordinator Department of Electrical and Computer Engineering, Makerere University. I really appreciate the tremendous help granted willingly by the great communication engineers of UETCL, thank you Mr. J B Walugembe, the Principal Communication section, Mr. Kibuuka Yusuf, Mr. Dauda Musinguzi, Mr. Cranmer Rwagize, Mr. George Alioke, Mr. Job Musalwa, and Ms. Carol Ssekamatte, may God reward the works of your hands. I cannot underrate the great contribution made by my fellow trainees, Joel Kafeero, Edward Kasozi and Coline Anyango, for me to accomplish this training as well as this report, thank you for your knowledge and for being social to me. You have an upper hand in this success. Finally, I thank all the other employees of UETCL who were so welcoming and gave me a friendly environment to learn and finish this training. A big thanks also goes to all those that advised me on how to make a good report. May God reward you abundantly.
  • 4. iii LIST OF SYMBOLS AND ACRONYMS ADSS -All Dielectric Self-Supporting CEO -Chief Executive Officer CVT -Capacitor Voltage Transformer ERA -Electricity Regulatory Authority ICT -Information and Communication Technology IT -Information Technology LAN -Local Area Network LMU -Line Matching Unit MDF -Main Distribution Frame ODF -Optical Distribution Frame OTDR -Optical Time Domain Recto meter PABX -Public Automatic Branch Exchange PAX -Private Automatic Exchange PDH -Presio Digital Hierarchy PLC -Power Line Carrier PSTN -Public Switched Telephone Network SCADA -Supervisory Control And Data Acquisition SCE -Senior Communication Engineer SDH -Synchronous Digital Hierarchy UEB -Uganda Electricity Board UEDCL -Uganda Electricity Distribution Company Limited UEGCL -Uganda Electricity Generation Company Limited UETCL -Uganda Electricity Transmission Company Limited VOIP -Voice Over Internet Protocol
  • 5. iv TABLE OF CONTENTS DECLARATION............................................................................................................................. i ACKNOWLEDGEMENT..............................................................................................................ii LIST OF SYMBOLS AND ACRONYMS....................................................................................iii TABLE OF CONTENTS............................................................................................................... iv LIST OF DIAGRAMS AND FIGURES ......................................................................................vii PREFACE....................................................................................................................................viii CHAPTER ONE:.......................................................................................................................... 1 BACKGROUND OF THE ORGANIZATION AND INDUSTRIAL TRAINING PROGRAMME............................................................................................................................... 1 1.0 Introduction.......................................................................................................................... 1 1.1 Background of the industrial training Programme............................................................... 1 1.2 Objectives of the industrial training..................................................................................... 1 1.3 Background of the organization........................................................................................... 2 1.3.1 UETCL vision .................................................................................................................. 2 1.3.2 UETCL mission statement ............................................................................................... 2 1.3.3 Core values....................................................................................................................... 2 1.4 Mandate of the organization ................................................................................................ 2 1.5 Departments of the organization.......................................................................................... 3 1.5.1 The CEO’s Office............................................................................................................. 3 1.5.2 The Corporate Service...................................................................................................... 3 1.5.3 Finance, Accounts and Sales............................................................................................ 3 1.5.4 Internal Audit ................................................................................................................... 4 1.5.5 Operations and Maintenance............................................................................................ 4 1.5.6 Planning and Investment.................................................................................................. 4 1.5.7 Projects Implementation................................................................................................... 4 1.5.8 Human Resource and Administration .............................................................................. 4 1.6 Department, section, station attached to and duration of the training ................................. 5 1.6.1 Focus on the ICTD department....................................................................................... 5 1.6.2 Focus on the Communication section. ............................................................................. 6
  • 6. v 1.7 UETCL Organizational structure......................................................................................... 6 1.8 ICT Departmental structure ................................................................................................. 7 CHAPTER TWO .......................................................................................................................... 8 LITERATURE REVIEW ............................................................................................................... 8 2.0 Introduction.......................................................................................................................... 8 2.1 Communication Basics ........................................................................................................ 8 2.1.1 Communication................................................................................................................ 8 2.1.2 A communication link...................................................................................................... 9 2.2 Communication Media....................................................................................................... 10 2.2.1 Optic fiber ...................................................................................................................... 10 2.2.2 Copper............................................................................................................................ 13 2.2.3 Power Line Carrier (PLC).............................................................................................. 19 2.2.4 Free space or radio communication ............................................................................... 21 2.3 Multiplexers....................................................................................................................... 22 2.4 Power Supplies................................................................................................................... 24 2.5 Telephony ......................................................................................................................... 26 CHAPTER THREE.................................................................................................................... 29 PRACTICAL WORK................................................................................................................... 29 3.0 Introduction........................................................................................................................ 29 3.1 Optical Fiber cable preparation, splicing, and measurement of optical length.................. 29 3.1.1 Objective ........................................................................................................................ 29 3.1.2 Apparatus ....................................................................................................................... 29 3.1.3 Procedure........................................................................................................................ 30 3.1.4 Conclusion...................................................................................................................... 31 3.2 Termination of CAT 6 cable with RJ45 cable plug ........................................................... 31 3.2.1 Objectives....................................................................................................................... 31 3.2.2 Tools used ...................................................................................................................... 31 3.2.3 Procedure........................................................................................................................ 31 3.2.4 Cable testing................................................................................................................... 32
  • 7. vi 3.2.5 Conclusion...................................................................................................................... 33 3.3 Termination of the dB sub 9 connector pin out serial cable .............................................. 33 3.3.1 Objectives....................................................................................................................... 33 3.3.2 Tools used ...................................................................................................................... 33 3.3.3 Procedure 1 (continuity test)................................................................................................ 34 3.3.4 Procedure 2 (Termination of a new CAT 5e cable)............................................................. 34 3.3.5 Cable testing......................................................................................................................... 35 3.3.6 Observations and conclusion ............................................................................................... 35 3.4 Termination on a Krone block ................................................................................................ 36 3.4.1 Termination with a 25 twisted pair cable....................................................................... 36 3.5 Others...................................................................................................................................... 38 3.5.1 Study visits carried out during the training.......................................................................... 38 3.6 Analysis of the tele protection equipment (SWT 3000) ......................................................... 39 3.7 Evaluation ............................................................................................................................... 40 CHAPTER FOUR....................................................................................................................... 41 OBSERVATIONS, RECOMMENDATIONS AND CONCLUSION......................................... 41 4.0 Introduction........................................................................................................................ 41 4.1 Achievements..................................................................................................................... 41 4.1.1 Practical skills ................................................................................................................ 41 4.1.2 Interpersonal skills ......................................................................................................... 41 4.1.3 Communication skills..................................................................................................... 42 4.1.4 Others ............................................................................................................................. 42 4.2 Challenges.......................................................................................................................... 42 4.3 Recommendations.............................................................................................................. 43 4.3.1 To UETCL...................................................................................................................... 43 4.3.2 To Makerere University ................................................................................................. 43 4.4 Conclusion ......................................................................................................................... 44 REFERENCES............................................................................................................................ 45 APPENDIX 1............................................................................................................................... 46
  • 8. vii LIST OF DIAGRAMS AND FIGURES Figure 1: Organizational Structure of UETCL............................................................................... 6 Figure 2: Structure of ICT Department........................................................................................... 7 Figure 3: Illustration of A Communication Link............................................................................. 9 Figure 4: An Illustration of The Principle Of Operation Of Optic Fiber. .................................... 10 Figure 5: Layers of Optic Fiber .................................................................................................... 12 Figure 6: A Straight Cable Connected Using T568B Mode.......................................................... 15 Figure 7: RJ45 cable plugs and an illustration of the CAT6 cable with the plug......................... 17 Figure 8: Arrangement of The Pins On The Male And Female Pin Outs..................................... 18 Figure 9: A Schematic Illustration of A Power Line Carrier System............................................ 21 Figure 10: Connection of the microwave radio system................................................................. 22 Figure 11: Structure of UMUX ..................................................................................................... 23 Figure 12: Structure of Hit 7025................................................................................................... 24 Figure 13: A Schematic Illustration of the VOIP Network of UETCL......................................... 28 Figure 14: A Side Cutter And A Stripper Are Some Of The Tools Used In This Experiment. ...... 30 Figure 15: A Cable Tester............................................................................................................ 32 Figure 16: Interfaces On SWT3000 And The Way It Is Commissioned. ....................................... 40
  • 9. viii PREFACE This book is an industrial training report about the training I received at Uganda Electricity Transmission Company Limited in partial fulfillment of the requirements for the award of a Bachelor of Science degree in Telecommunication Engineering. It entails the introduction of industrial training, the history, structure and organization of UETCL. It also covers the theory of all the work covered during this period, the detailed procedures of the practical work done and the theory on communication given by the communication engineers at the communication workshop. Lastly, it looks at the challenges, recommendation as well as conclusion on the entire industrial training process.
  • 10. 1 CHAPTER ONE: BACKGROUND OF THE ORGANIZATION AND INDUSTRIAL TRAINING PROGRAMME 1.0 Introduction This chapter covers the background information of the organization and that of Industrial Training at Makerere University. It also gives a brief description on the departments of UETCL but with more focus on the ICT department. 1.1 Background of the industrial training Programme The Programme was designed to provide the Makerere university students with practical and hands on experience and expose them to employment opportunities in various agencies, government, and private organizations. All stakeholders in the university education recognize its invaluable contribution to the quality of university training. Industrial training as adopted by the education council means any approved field based practical work carried out by staff and students for the purpose of teaching and or carry out research in places outside university control. The University also noted that through industrial training, the potential employees are enabled to voice their ideas about the competencies, skills and knowledge they would find useful in the field. 1.2 Objectives of the industrial training  To enable students experience real life situations as they expected to work in when they graduate.  To enable students apply the principles and techniques theoretically learnt into real life situations that require problem solving.  To develop students understanding of work ethics, employment demands, responsibilities and opportunities.  To provide an opportunity for students and academic staff to interact with stakeholders and potential employers to appreciate field situations that will also generate information for curricula review and improvement.
  • 11. 2 1.3 Background of the organization UETCL is a public limited company, which was incorporated on 26 March 2001 under the PERD statute and companies under the power sector reform and liberalization policy as one of the three arms partitioned from UEB. UEB, which was the only electricity board, was unbundled into UEGCL for generation, UETCL for transmission and UEDCL for distribution of electricity. In addition, an independent authority known as ERA was established to regulate and overview the activities of these different arms. Owned by the Government of Uganda represented by the Ministry of Finance, UETCL started its operations on1st April 2001 under policy guidelines by the Ministry of Energy. Its core business is purchase of power in bulk from the generators and selling it to the distributors. 1.3.1 UETCL vision “To become a leading strategic business partner in the transmission and single buyer business to support sustainable energy development in Uganda” 1.3.2 UETCL mission statement “To dispatch, transmit quality and reliable bulk power in a viable and efficient manner. To be an efficient and commercially focused single buyer actor” 1.3.3 Core values  Self respect and respect for others.  Transparency and integrity 1.4 Mandate of the organization  Operation of a high voltage grid  System operator  Bulk power supply  Power import and export  Public Infrastructure Provider
  • 12. 3 1.5 Departments of the organization 1.5.1 The CEO’s Office The CEO oversees the Company operations and heads the management team. He is responsible for leading and developing the management team, developing management plans, advising the Board of Directors on issues affecting the company, maintaining efficient operations, and creating a mutual understanding between the organization and public The Deputy CEO assists the CEO in the general operation of the company including the strategic development of the company. The responsibility of the Deputy CEO is to provide strategic direction and ensure financial sustainability of the Company, ensuring high customer satisfaction, external stakeholder confidence, and retention of competent employees as well as having a special focus on efficient transmission and system operations business. 1.5.2 The Corporate Service This department is headed by a Manager and is divided into the Legal, Security and Procurement sections. It deals with corporate services to enable the company achieve its objectives by providing for all the legal needs of the company, services that lead to the timely and efficient procurement of goods, works and services as well as provide security services that shall safeguard all company resources. 1.5.3 Finance, Accounts and Sales The Finance, Accounts and Sales department is headed by a Manager and is responsible for ensuring finance and corporate efficiency. The department is divided into sections the Energy Sales and Statistics and the Finance and Accounts sections, which are meant to develop processes and systems that will be able to collect, utilize and safeguard the Company business resources in accordance with the business objectives set by the Board.
  • 13. 4 1.5.4 Internal Audit This department is headed by a Manager and operates as a service to management by measuring and evaluating the effectiveness of risk management, control, and governance systems. This function incorporates the business planning processes, aids the company board and audit committee in achieving business goals without undue risk. 1.5.5 Operations and Maintenance It is responsible for the operation and maintenance of the grid. The Manager Operations and Maintenance heads the department, which comprises Maintenance, Control, and Protection sections. Its main mission is to operate and maintain the transmission grid assets and local dispatch facilities in a safe manner in accordance with International Prudent utility Practices. 1.5.6 Planning and Investment The department is comprised of the Planning, Civil, Mechanical Engineering, Safety and Services sections. It is also headed by a Manager and exists to develop and implement power purchase and transmission plans, to meet the future electricity demand of the country and to Provide transport services in line with company strategic objective. 1.5.7 Projects Implementation The Department is responsible for implementing Power System Projects and is headed by Manager and the Project Implementation department comprises Environment and the Engineering Projects sections. UETCL projects are developed in different phases; Power System Planning, Feasibility studies and Implementations. The mission of this department is to meet expectations from external stakeholders and the Board. 1.5.8 Human Resource and Administration The Human Resource and Administration is headed by a Manager Human Resource and Administration and is responsible for the Organizational planning and objectives of
  • 14. 5 the internal processes, employees and external stakeholders. The department has two sections i.e. Human Resource and Administration and its mission is to ensure that human resource is matched to the needs of the organization and is effective and to develop and maintain a professional image of the Company. 1.6 Department, section, station attached to and duration of the training The field attachment was done from UETCL’s Lugogo yard in the Communication section under the ICT Department. The internship season lasted for a period of 10 weeks from 2nd June to 8th August 2014. 1.6.1 Focus on the ICTD department The ICT department is headed by a Manager ICT and is composed of the IT and Communication sections. 1.6.1.1 Mandate  To develop an appropriate and secure information and communication technology infrastructure aimed at managing information collection, processing and dissemination, monitoring and assisting users to maximize the utilization of computers.  To improve the communication network for reliable transfer of data and speech 1.6.1.2 The mission Our mission statement is ‘to provide information and communication systems for the Company in line with corporate objectives’. 1.6.1.3 Objectives  Control of life cycle cost through standards based on ICT Policy  ICT Security at a sufficient high level  Provide reliable and timely information to customers and stake holders  Provide a reliable ICT infrastructure
  • 15. 6  Develop an ICT policy and Strategy and secure ICT environment (virus free and intrusion proof).  Ensure high availability of the telephony and SCADA communication systems. 1.6.2 Focus on the Communication section. This is one of the two sections under the ICT department and is under the Principal Communication Engineer assisted by the two Senior Communication Engineers that help the organization in the daily running of the section. This section operates an integrated communication network structured to efficiently support data, telephony, and tele-protection interfaces. 1.6.2.1 Mandate  Provision of reliable power supply to essential loads  Facilitation the Optic Fiber business  Provision of communication links and interfaces  Provision of reliable speech infrastructure within company network 1.7 UETCL Organizational structure Manager Corporate service Manager Finance, Accounts and sales Manager ICT department Manager Internal Audit C.E.O Manager Operations and Maintenance Manager Planning and Investments Manager Projects Implementations Manager Human Resource and Implementation Figure 1: Organizational Structure of UETCL
  • 16. 7 1.8 ICT Departmental structure Figure 2: Structure of ICT Department ICT MANAGER Communications Engineer TechniciansTechnicians Communications Engineer SCE POWER SUPPLIES, MICROWAVE, AND OPTICAL FIBER Principal communication Engineer Principal IT SCE PLC, RADIO AND TELEPHONY
  • 17. 8 CHAPTER TWO LITERATURE REVIEW 2.0 Introduction This chapter gives a detailed theoretical description of the main engineering fields handled during the training. It is aimed at equipping the reader with prior knowledge on the practical work done as described in Chapter three of this report. Here in is also any theoretical information provided by the instructors during the training especially through the various lectures availed to the interns. This is backed by the author’s research carried out on the relevant topics covered during the training all summarized in this chapter. 2.1 Communication Basics This mainly elaborates on what communication, the different types and defines a communication link and its illustration. 2.1.1 Communication This refers to the transfer of processed data from one point known as a source to another known as a sink through a communication medium. Types of communication There are three main types of communication i.e. verbal, non-verbal and written communication.  Verbal. This exchange can be physical (face to face), by telephone, by television, radio or any other media may be involved.  Non-verbal. This refers to the transfer of information without using voice nor by writing i.e. by use of body language, gestures or even by the way one acts towards the person to whom he or she is communicating.
  • 18. 9  Written. This refers to either communication that occurs by transfer of reading or written material in soft or hard copy. The media used in this case includes books, letters, magazines, e-mail, graphics, internet, maps etc. 2.1.2 A communication link This refers to the whole system necessary for communication to occur i.e. a source and a sink that are connected by a communication medium as illustrated below. Communication Link Figure 3: Illustration of A Communication Link The source and the sink are the main terminal equipment for transferring and receiving data respectively. These may include multiplexers, switches, telephones, modems, computers, television sets, and radios among others. The media refers to the pathway through which information flows from the source to the sink. These may include copper, fiber, PLC and free space. It is important to note however that the communication link used can be Simplex (a transmitter); where information is only be sent but no feedback is received directly. A case in point is communication by radio and TV. However, it can also be Duplex (a transceiver) where information is sent to the receiver and the sender receives feedback immediately for example, communication by telephone. Concisely, communication can only be possible in presence of a communication link i.e. a source, a medium and a sink. SOURCE SINK
  • 19. 10 2.2 Communication Media This is about the various pathways through which information flows for communication between the source and the sink to occur. Described below are the main forms of communication media i.e. optic fiber, coaxial cable (copper), PLC and free space. 2.2.1 Optic fiber This is the type of communication medium in which data is transferred from one point to another by use of a beam of reflected light rays. Figure 4: An Illustration of The Principle Of Operation Of Optic Fiber. Types of optic fiber There are various types of optic fiber used at UETCL depending on the method of transmission and termination. These include,  ADSS (All Dielectric Self Supporting); this is usually used when a tower is already in place.  OPGW (Optical Power Ground Wire); in this case the fiber is embedded in the earth wire for the power line  Sky wrap; a special machine is used to wrap it on a power line  OPFC; this is the type of fiber which is embedded in a phase conductor. Modes of transmission of optic fiber There are two modes of transmission of optic fiber i.e. single mode and multi-mode transmission.
  • 20. 11 Single mode transmission In this mode of transmission of optic fiber, light is carried directly in a single strand such that light waves are of the same mode but with different frequencies and are distributed in such a way that they give a single ray of light. The following features are characteristic of single mode transmission  A single strand.  Light can propagate at wavelength of interest i.e. 1300-1550nm.  It allows a higher transmission rate and up to fifty times more distances.  It uses a relatively smaller core i.e. 8µm-10µm  It has less attenuation and the highest transmission speeds. Multi-mode transmission This mode of transmission is used for communication over short distances and has data length rates of 10Mbps to 10Gbps for a length of up to 600m. The following are features associated with multi-mode transmission.  The fiber has a slightly bigger diameter i.e. 50µm-60µm  It is less expensive and easier to work with.  It is suitable for systems with short optic links.  It uses two fibers.  It covers higher band widths at high speeds of 10-100mbps Activities done on optic fiber  Preparation This involves removal of all the coatings to expose the fiber cladding for any other activities to be done on the fiber. All the various layers of the fiber are removed using a cutter, a striper as well as alcohol and clean wipes for cleaning the fiber of any protective gel and keep it clean.
  • 21. 12  Splicing This is the process of joining two optic fibers together such that there is continuity of the cable for transmission and further use. Figure 5: Layers of Optic Fiber There are two types of splicing i.e. arc fusion and mechanical splicing. Under arc fusion, an arc fusion-splicing machine is used to align the two fiber ends before an arc is used to weld the protective glass onto the spliced end of the fiber. This enables continuity of the cable with minimum optical losses of 0.00- 0.20 dB. Mechanical splicing occurs in such a way that alignment devices simply hold two fibers in an aligned position for light to pass through.  Measurement of optical length This is done using an OTDR machine i.e. one of the ends of the cable is spliced to the pigtail and the other end connected to the OTDR machine. The relevant parameters are set onto the OTDR before the optical length and losses are displayed on the screen of the OTDR. Advantages of optic fiber over other media  It covers greater bandwidth.  It has lower attenuation and covers greater distance.  It is more secure since it does not radiate signals and is extremely difficult to tap. Core Cladding Coating Strength Jacket Members
  • 22. 13  It is immune to electromagnetic interference and reliable.  It is of lightweight and more durable.  Easy migration from copper to optic fiber.  It is standard and relatively cheaper to maintain. 2.2.2 Copper It would be realistically useless to talk about communication media and neglect the role played by copper in data communication. All the other communication media are not complete in use if copper is not used since it is always necessary during termination of the media to the final equipment to be used such as switches, routers, computers, telephones etc. There are two forms of coaxial cables i.e. shielded twisted pair (STP) and unshielded twisted pair (UTP). The former is the mostly used at UETCL and some of the examples of this cable include CAT6a, CAT6 and CAT5e. CAT6 cable is a standardized cable for Gigabit Ethernet and other network physical layers compatible with CAT5 and CAT3 cables. This cable features more stringent features for crosstalk and system noise and provides performance of up to 250MHz though CAT6a is characterized to 500MHz. It is normally terminated in 8P8C modular connectors of either T568A or T568B pin arrangements and allows a maximum length of about 100 meters for 10, 100 and 1000 BASE-T whereas the 10G BASE-T can only be about 55metres long. It must be properly installed and terminated such that it’s not bent or kinked tightly, wires not untwisted and the outer jack ought not be stripped back more than 0.5 in. cable shielding is also necessary to improve its performance in high electromagnetic fields and reduce the corrupting effect of EMI on the cable’s data. During the training, the intern used and got familiar with the following types of data communication cables.  Straight cable
  • 23. 14  Crossed cable  Rollover cable  Serial cable (dB sub 9 connector pin out) Standards of cable termination and their color-coding There are two standards of cable termination namely;  T568A and  T568B. CAT6 has four twisted pairs and each of these pairs has a dominant colored wire and then a dominant color-white striped wire. These are arranged differently when terminating using the two standards as illustrated below. T568A 1- White green 2- Green 3- White orange 4- Blue 5- White blue 6- Orange 7- White brown 8- Brown T568B 1- White orange 2- Orange 3- White green 4- Blue 5- White blue 6- Green 7- White brown 8- Brown
  • 24. 15 Straight cables These are cables that have pin assignments on each end of the cable that is Pin1 on one connector goes to Pin 1 on the other connector and similarly for all the other pins. They are fabricated by connecting the T568A standard directly onto the T568A standard on the other end of the cable or the T568B standard directly onto the T568B standard on the other end as illustrated below. 1………………………………………………1 2………………………………………………2 3………………………………………………3 4………………………………………………4 5………………………………………………5 6………………………………………………6 7………………………………………………7 8……………………………………………...8 Straight cables are used for connecting equipment and devices of different types such as Connecting a switch to a computer. Figure 6: A Straight Cable Connected Using T568B Mode.
  • 25. 16 Crossed cables These are similar to crossed cables except that TX and RX lines are crossed at opposite ends on either end of the cable. This is implemented by connecting a T568A standard to a T568B and vice versa as illustrated below, 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 They are used for connecting devices of the same type, for example a computer to another computer. Rollover cables These are also known as yost cables, which have pin arrangements on each end of the cable. It is attained by connecting a normal T568A OR B standard on one side and then an inverted T568A or B standard on the other side as illustrated below.
  • 26. 17 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 Rollover cables are not intended to carry data, but to create an interface with the devices hence they are used to connect to a device’s console port to make programming changes to the device. Figure 7: RJ45 cable plugs and an illustration of the CAT6 cable with the plug. Serial cable A serial cable is one used to transfer data from one device to another by serial communication either synchronously or asynchronously. The commonest standard is RS232 though there are others such as RS 485, RS 422 and others In a serial cable, the kind of connector used depends on the serial port used, maximum length as well as the features on the transmitter and the receiver. The band rate on the
  • 27. 18 cable and the capacitance and electrical impedance of the cable must also however be put in consideration. The serial cables can be 9 pin, 15 pin or 25 pin and the following connections are all very possible; 9pin-9pin, 9pin-25pin, 25pin-25pin etc. dB Sub 9 Female connector pin out This cable helps the user to connect any device with an interface of dB sub 9 male pin out to another of the same kind as shown in the figure below Figure 8: Arrangement of The Pins On The Male And Female Pin Outs. 1-DCD-Data Carrier Detect 2-RXD-Receive Data 3-TXD-Transmit Data 4-DTR-Data Terminal Ready 5-GND-Signal Ground 6-DSR-Data Set Ready 7-RTS-Request To Send 8-CTS-Clear To Send 9-RI-Ring Indicator
  • 28. 19 The most essential for serial communication however are 2, 3 and 5. Below is the mode of connection of a dB sub9 female-to-female using a CAT6 cable on which a continuity test was done during the training. Plug A Plug B 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 It was realized that there was no continuity for pin 9 for both plugs implying that the ring indicator was not connected. Copper is therefore very ideal for data communication among any other communication media. 2.2.3 Power Line Carrier (PLC) Power line carrier is a medium of communication that involves carriage of signals over a power line. Being a power company handling high voltage transmission of up to 132kV, UETCL is able to transfer data using this rare communication medium in Uganda. PLC is mostly used for tele protection thought it is also essential for SCADA, as well as voice communication at UETCL. Its persistent application despite the introduction of optic fiber is because of its reliability, cost effectiveness and data transmission over long distances. Due to limited bandwidth, it is however used in places where there is no optical fiber and in areas where there is optical fiber, it is only used as backup.
  • 29. 20 How PLC works. The PLC system involves the application of line traps to block high frequencies of 100- 500 kHz at the substation while the 50 kHz is released for power transmission. The high voltages are then passed through a CVT (capacitor voltage transformer) to step down extra high voltage signals and provide low voltage signals for measurement, communication or to operate a protection relay. It is also used to filter high frequency communication signals from power frequency. The signals are then passed on to the line matching unit (LMU) which consists of a drain coil , isolation transformer, an earth switch and a tuning device which is a combination of R-L-C circuits that act as filter circuits. The LMU helps to connect the audio-radio frequency signals to the transmission line or PLC terminal. From the LMU, the high radio frequency signals are carried through a coaxial cable at a resistance of 75Ω to the terminal equipment for conversion to much smaller audio frequencies of between 0-4 kHz that are then put to use for SCADA, tele protection, voice . Two power phases are used for the PLC system as illustrated below:
  • 30. 21 Line traps SUBSTATION.A SUBSTATION B Voice Ethernet Tele protection SCADA Figure 9: A Schematic Illustration of A Power Line Carrier System. 2.2.4 Free space or radio communication Under this indigenous medium of communication, signals are generated and then transmitted through air or free space. This therefore justifies the need for a microwave antenna to project the signals to their destination. This medium is however no longer used for communication at UETCL since more effective and efficient media with high capacity have replaced its application in UETCL. The microwave antenna is connected to the radio by a wave-guide through to the outdoor unit. The outdoor is then connected to indoor unit by multicore cable. CVT CVT LMU Terminal equipment
  • 31. 22 Micro wave dish (antenna) Wave-guide Multicore cable Figure 10: Connection of the microwave radio system. 2.3 Multiplexers A multiplexer is a data communication device, which selects one of several analog or digital input signals and forwards it into a single line. A multiplexer of 2n inputs has n select lines used to select which input line to send to the output. They are mainly used to increase the amount of data that can be sent over the network with in a certain amount of time and with. It is thus also known as a data selector. An electronic multiplexer makes it possible for several signals to share one device or resource i.e. analog-digital converter or one communication line instead of having one device per input signal. Conversely, a Demultiplexer (demux) takes a single input signal and selects one of many data output lines that is connected to a single input. Therefore, a multiplexer is always used with a complementary demux at the output end. Outdoor Unit Indoor Unit
  • 32. 23 There are various types of multiplexers though two are used at UETCL i.e. UMUX1500 and FMX-2S, which is used along with HIT7025 for efficient, reliable and effective communication in the company. Features of UMUX1500  It is a multi-service access multiplexer.  It has both traffic interfaces and transmission interfaces.  It can handle a number of interfaces from nx64Kbps to STM 1 one rack or chassis.  UMUX1500 has the same management tool for configuration, alarms and faultfinding. UMUX uses different cards for various purposes such as providing an optical interface and connection to S-Bus, P-Bus and U-Buses as shown in the illustration below. Nebro SYNUF S-BUS SYNAC P-BUS COBUX U-BUS Figure 11: Structure of UMUX S-SDH P-PDH
  • 33. 24 Features of FMX-2S+ HIT7025  HIT7025 handles transmission interfaces while as FMX-2S handles access or traffic interfaces  It uses different management tools.  It also has different racks or chassis. Figure 12: Structure of Hit 7025 2.4 Power Supplies These electronic devices supply electric power to an electronic load. They convert one form of energy to electric energy to provide power for running different electrical and communication equipment. Most telecommunication equipment use standard dc power of -48V while 110V dc powers protective devices such as relays. Examples of power supplies at UETCL  DC power supply from batteries  AC power supply from hydro-electricity.  Generators Generators A generator is a device that converts mechanical energy into electrical energy. There are a number of standby generators at UETCL that are used for ensuring constant power supply to the communication equipment. Batteries that provide power in case of failure of generators to start when power goes off also back these up.
  • 34. 25 Types of generators  AC generators  DC generators Main components of a generator  Starter motor  Engine  Alternator  Fuel system  Voltage regulator  Cooling and exhaust systems  Lubrication system  Starter battery  Control panel  Frame How a generator works The engine is started, fuel comes in and spreads on the nozzle injectors, a spark is realized and due to high pressure, air is compressed and fire starts. The piston starts moving and the engine runs producing mechanical energy. The rotor moves in a magnetic field generating an emf that induces current flow. The automatic voltage regulator (AVR) to produce output verifies that the voltage realized is normal otherwise, no output is realized. An automatic changeover such as CT1125 composed of contactors is also connected for a standby generator. Faults on a generator Failure to start
  • 35. 26 Possible causes  Blocked air system  Lack of fuel or Locked fuel system  Control mechanism  Flat starter battery  Faulty starter motor  Faulty fuel solenoid  Clogged fuel filter Generator stopping during operation Possible causes  Fuel is used up  Low oil pressure  No output from AVR  Faulty rotor  Over loading 2.5 Telephony This engineering field deals with transmission of voice, data or fax between parties at a given distance. It is the mandate of the communication section of UETCL to provide a reliable speech infrastructure. This section therefore has the responsibility to maintain a reliable and constant communication network for all the branches of the company. Differently from the traditional way of connecting callers directly by creating a loop for two people to communicate by phone, nowadays a switch does the industrial work through a PAX or a PABX or even both depending on the destination of the call. The PAX is responsible for connecting local callers while PABX connects any calls beyond the specified LAN. The switch is able to identify the caller by using the caller’s identification number before connecting it to the requested number.
  • 36. 27 UETCL mostly uses IP telephony that allows connection over an internet protocol throught its wide VOIP network. UETCL’s VOIP network This is composed of simply two elements i.e. the switch and the IP sets. The switch provides an interface onto which all the IP sets are connected. IP sets include computers, telephones etc. Functions of a switch.  It provides the dialing tone  It gives DTMF tone  It provides the numbering plan  It provides a busy tone  It gives the ringing tone  It provides the ringing signal  It times the call duration [billing or providing tickets]  It provides a connection for the calls Types of switching Circuit switching This is a type of switching in which there is establishment of an end-to-end connection to create two network nodes. A circuit switched network is ideal for application within limited points but in case of multiple locations and large amount of data to transmit, it is more effective to use packet switching. Advantages of circuit switching  No degradation of the response time  Lack of buffers in the data path  Possibility of all optical data paths  Higher switching capacity
  • 37. 28  It’s simple and intuitive  Has simple admission control Packet switching It is a mode of data transmission in which a message is broken into a number of packets that are sent independently over whatever route is optimum for which each packet is reassembled at the destination. All this is done over an internet protocol network. Packet switching also allows the use of an IP address. An IP address; this refers to the unique identification of a device on an IP address. It consists of 32 binary bits broken down into four octates. The octates range from 00000000-11111111 and are separated by a dot e.g. 172.16.81.100 For an IP address to be complete, it ought to be given a subnet maskthat helps to define which part of an address is the host or the network. Example of a subnet mask is 255.255.0.0 meaning that the first two octates are the network and the other two are the hosts. Communication server switching Gateway/PSTN Billing server Standby comn.server Router Figure 13: A Schematic Illustration of the VOIP Network of UETCL.
  • 38. 29 CHAPTER THREE PRACTICAL WORK 3.0 Introduction This chapter entails the apparatus used, the objectives, procedures, observations, and conclusions of the tests, measurements, fabrications, experiments and any other practical works done during the training. Under this chapter also is the other work done in that period that the trainee deemed relevant though he never had hands on operation on it. 3.1 Optical Fiber cable preparation, splicing, and measurement of optical length 3.1.1 Objective To determine whether there was continuity of the cables 3.1.2 Apparatus  Absolute ethanol 99.8%  Strippers -Pros Kit 8PK-3002D -Ripley Miller F0103S  A knife  Kim wipes  A high precision cleaver CT-30 Fujikura SN.83246  Arc fusion splicing machine FSM-50S SN.10779  A protective sleeve  A pig tail FC  Optical Time Domain Recto meter MU 2500A (DISPLAY UNIT) SN 6200593001 MW 9076C SN 6200462938
  • 39. 30 Figure 14: A Side Cutter And A Stripper Are Some Of The Tools Used In This Experiment. 3.1.3 Procedure  The knife was used to remove the hard outermost sheath for a small length to expose the inner sheath, the red thread, and the inner sheath was also stripped off carefully using a knife to avoid cutting the inner insulation of the fiber  The white protective tubes, the strength member and the thread were also cut off leaving the four tubes each having six cores.  The blue tube was randomly selected, the striper used to remove the coating and expose the cladding of the cores that were well cleaned using the Kim wipes.  The cores were separated, one of them randomly selected. It was further striped and well cleaned with the absolute ethanol.  It was then inserted into the high precision cleaver to cleave it at 900 .  It was carefully placed into the splicing machine and clipped.  The pigtail was also stripped and well cleaned. It was also carefully placed into the splicing machine ensuring that there is minimum separation between it and the optical fiber.  The cover of the splicing machine was then placed back and the set button pressed for splicing to take place. The whole process was viewed on the display unit of the splicing machine.  The other end of the pigtail was carefully and properly connected to the OTDR. The necessary parameters such as wavelength of 1310nm were set and the start button pressed to measure the optical length.  The optical length and the corresponding losses were displayed on the screen.  The experiment was repeated for all the three optical cables.
  • 40. 31 Table 1: Table of results Wavelength λ (nm) Optical length (km) Total optical loss (dB) 1310 1.368 0.02 1310 1.857 0.02 1310 0.302 0.02 3.1.4 Conclusion The experiment was able to meet its objective since the optical length was successfully measured implying that there was continuity of all the three cables. There is need to do more experiments so as to attain more experience since I was forced to continuously repeat the experiment as a result of poor cleaving of the fiber as displayed on the splicing machine. The pigtail used at first was also of poor quality or had some irregularities since it gave a high optical loss of over 0.25dB before I later changed and used a better one that gave a relatively lower loss of 0.02dB 3.2 Termination of CAT 6 cable with RJ45 cable plug 3.2.1 Objectives  To terminate working straight, crossed and rollover data cables. 3.2.2 Tools used  CAT6e cable [DUO4017040M]  RJ45 plugs  A crimping tool. [6p 8p 4p San Tus]  A cable tester [MASTER XT-468] 3.2.3 Procedure  Using a crimping tool, the ends of the cable were trimmed to ensure that they are straight and wires are of equal length  The crimping tool was then used to strip off a small length of the CAT6e cable’s jacket
  • 41. 32  The four twisted pairs were separated from each other, each pair unwound to make eight individual wires, which were flattened and straightened.  Holding the cable with wire ends facing away from me, moving from left to right, the wires were arranged in a flat side by side formation in the order; white orange, orange, white green, blue, white blue, green, white brown, brown for the T568B standard.  The RJ45 was held with its pins facing away from me and the plug clip side facing down. The flattened, arranged wires were carefully inserted into the connector until the wire ends were firmly inside the plug.  Carefully placing the RJ45 cable plug into the provision for the 8p, the crimping tool was used to force the plug pins into the inserted wires for contact to be established.  After the first termination was completed, the process was repeated on the opposite side of the cable to form a complete straight RJ45 patch cable.  The above procedures were then repeated for the termination of the crossed cable as well as rollover cables. This was done by merely altering the color codes as well illustrated in chapter 2. The cables were then tested using a cable tester as explained below. 3.2.4 Cable testing After the termination was completed on both ends of the cable, the two ends of the cable were placed into the terminals of the cable tester to test for continuity. The tester was then switched on. It was observed that all the eight pins were continuously connected for the straight, crossed and rollover cables as elaborated in chapter 2, implying that the cables were properly terminated and were ready for use. Figure 15: A Cable Tester.
  • 42. 33 3.2.5 Conclusion The process of cable termination was successfully completed however it was noticed that it requires a high level of precision especially during the arrangement and insertion of the wires into the cable plug. If not properly arranged, the aim of the experiment will not be achieved. It is also important to note that the wires should be well trimmed to ensure that they are well flattened and even. If the crimper doesn’t automatically trim the wire ends upon termination, carefully cut the wire ends to make them as flush with the connector’s surface as possible. A small part of the cable jacket should be striped so that all the exposed wires are inserted inside the cable plug. I had to repeat the practical because I had not done this proper termination. A successful cable termination is very important to provide means for data transfer or data sharing and creating an interface for different devices. 3.3 Termination of the dB sub 9 connector pin out serial cable Analysis on an already terminated dB Sub 9 female connector pin out was first carried out to establish continuity of the copper cables and determine the interconnection of the different pins as shown in chapter 2. 3.3.1 Objectives  To analyse and test for continuity of the cable  To terminate a working similar dB sub 9 serial cable 3.3.2 Tools used  CAT 5e;  Two female dB sub 9 connector pinout plugs  Soldering iron  Solder wire  A Digital multimetre; FLUKE 787 PROCESSMETER
  • 43. 34  A side cutter  A stripper 3.3.3 Procedure 1 (continuity test) The two ends of the serial cable provided were labeled A and B respectively using a masking tape. End B was kept constant i.e. by connecting one probe of the multimeter to pin 1. With the meter set to the resistance parameter, the other probe was varied through all the pins of plug A to establish continuity of the pins on the two plugs and he result noted. The process was continued for all the 9 pins of plug B and the following results the were obtained: A B 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 (no continuity) 3.3.4 Procedure 2 (Termination of a new CAT 5e cable) The cable jacket of the CAT 5e cable provided was removed using a side cutter and the four twisted copper cables exposed for a very short length that can be accommodated inside the plugs. A very short length of the copper wires was stripped to expose the conductor for soldering.
  • 44. 35 The wires were flattened and straightened to ensure a common length. For the constant plug B, the conductors were randomly soldered onto the pins 1-8. (pin 9 was neglected since it showed no continuity in the test in procedure 1) By carefully observing the colour coding of the wires already soldered on plug B, the exposed conductors were carefully soldered to their corresponding pins using soldering iron and the solder wire. The order of the results obtained in the continuity test above was maintained to come up with a working serial cable. 3.3.5 Cable testing The cable was then tested by connecting it to one of the UMUX cards and the other end to a computer and it was able to transmit data from the UMUX to the computer. 3.3.6 Observations and conclusion It was observed that the cable could transmit data from the UMUX card to the computer however it was only one way i.e. it would only transmit data when the constant plug B was connected to the computer otherwise there was no data transmission. More care should have been taken especially when soldering the wires on the pins of the plug A by matching the right wires basing on the color codes. More soldering skills however were also required to come up with better product. The experiment was able to meet its objective since continuity of all the pins other than pin 9 was established. In addition, the termination was a success since the intern was able to make a working serial cable.
  • 45. 36 3.4 Termination on a Krone block 3.4.1 Termination with a 25 twisted pair cable 3.4.1.1 Objective  To come up with a correctly terminated krone block with a 25 twisted pair cable.  To master the color coding and order of termination of cables on a krone block. 3.4.1.2 Tools used  A side cutter  A krone punch tool  A 25 twisted pair cable  Krone blocks 3.4.1.3 Procedure The side cutter was carefully used to remove the jacket of the cable for an appropriate length considering the length of the case on which the terminated blocks were to be fixed. The twisted copper wires were then carefully separated and arranged in the order of termination on a krone according to the color coding described in chapter 2 By terminating each pair onto the block using the krone punch tool, the 1st ten pairs were terminated onto one krone, the next ten on another krone and the last five on a half a krone which was completed by five from another cable. The krone blocks were then terminated onto the krone case. 3.4.1.4 Conclusion More practice to master and be more efficient was required since only one experiment was carried out. The experiment was a success since the work done postulated the already terminated krones in the krone case available.
  • 46. 37 3.4.2.1 Decommissioning a krone case 3.4.2.2 Objective To remove the already terminated krone blocks from the krone case and detach the copper wires from the blocks for cleanliness purposes of the store as well as recycling the krone blocks removed. 3.4.2.3 Tools used  A krone punch tool  A side cutter  A small screw driver 3.4.2.4 Procedure The small screw driver was used to detach the krone blocks from the krone case by inserting it on either ends of the block and then pulling the block out of the case. This procedure was used to detach all the ten blocks, which were on the case. The krone punch tool was the used to release the terminated cables from the block by using the hooked part of the tool. The above procedures were repeated for all the blocks before the cables were disposed and the krone blocks attached onto the case for recycling. 3.4.2.5Conclusion The experiment was a success since some skills were obtained on decommissioning of the krone case and in the end; the store was cleaned up. More practice would however help to attain more skills and efficiency in performing this task.
  • 47. 38 3.5 Others This section involves any other activities and study visits that were carried out during the training in which the intern was not allowed to have hands on experience for precautionary purposes but we acquired much knowledge and skills about these different activities as well as the equipment and their operation. 3.5.1 Study visits carried out during the training 3.5.1.1 A visit to UETCL Head office at Hannington road As part of introduction to the communication system of the company especially the telephony (VOIP) network, Mr. Job Musalwa and Ms. Carol Ssekamatte took the interns along with them to the telecommunication control room at Head office and below are some of the equipment checked when in the control room. More advanced communication media such as coaxial cable and optic fiber, microwave radio, the main switch that is connected to main communication server, the billing server, the PSTN or Gateway server and other communication equipment are connected. It is from this switch that the communication system is transmitted to the rest of the branches and substations of UETCL. A charger for maintaining constant power supply to the telecommunication equipment. This is necessary to ensure that the communication system of the company is never cut off at any one time for efficiency purposes. The multiplexers for enabling various input and output conversions for a single and multi-line input and output, the patch panel that enables various terminations to and from the switch as well as the krone case for termination of the copper cables. Also checked on were the modems that enable conversion between optical and copper transmission. 3.5.1.2 A visit to Muyenga tank hill Communication station This station was originally managed by UEB and used for providing signals for radio communication for the various sub stations. However when UEB was unbundled,
  • 48. 39 UETCL attained the mandate to use this station for its own communication as well as leasing out its services to any other optical fiber clients. Mr. Cranmer Rwagize took the interns along with him to check out on this station as he supervised the decommissioning of some equipment belonging to One-Solutions Company. The equipment decommissioned was an Ethernet radio connected to the switch by a CAT6 cable. Checked at the station also were the multiplexer UMUX-1300, the microwave radio, UHF radios and VHF radio, a battery charger, battery bank and standby generator with a changeover unit to maintain constant power supply to the communication equipment. 3.5.1.3 A visit to Lugogo substation and control center Together with Mr. Cranmer Rwagize, the interns visited Lugogo substation located along Edward Mugalu road and the following equipment were checked on. The main components of a substation such as transformers which were mainly step down i.e. 132kV~33kV, 132kV~11kV and 11kV~415V. In addition, at the substation were circuit breakers, isolators, relays, DC supply sources and a Standby Generator for backup ac supply. The PLC, line traps, LMU, CVT, optical fibers such as OPGW, Sky Wrap and ADSS together with ODF were also seen at Lugogo SCADA. 3.6 Analysis of the tele protection equipment (SWT 3000) Tele protection is a way of using communication equipment to monitor and control the safety of power lines. The equipment is usually connected at various substations where there is fiber to monitor the power line between the stations. These equipment send signals to each other in case of any fault in the lines, alarms are then automatically set for any action to be taken by the relay, which in turn operates a circuit breaker.
  • 49. 40 Figure 16: Interfaces On SWT3000 And The Way It Is Commissioned. 3.7 Evaluation The interns participated in the evaluation process of some bidding companies for the purchase of some equipment to be used at the store. The equipment in question involved a drilling machine, a spanner set, digital millimeters and ladders. The companies that had applied for the purchase of this equipment involved MTE, TASS, SAS, SECH among others. The interns were engaged in verifying the technical compliance of these companies’ equipment with the laid specifications of the communication section. The process was successfully completed under the guidance of Ms. Carol Ssekamatte and the companies were forwarded for financial compliance checks.
  • 50. 41 CHAPTER FOUR OBSERVATIONS, RECOMMENDATIONS AND CONCLUSION 4.0 Introduction This chapter summarizes the entire industrial training, the whole experience attained as well as the challenges faced in the training. It also tackles the recommendations that the intern deems necessary to address to the university and the company about industrial training. Finally, the intern gives conclusive remarks overall industrial training process. 4.1 Achievements 4.1.1 Practical skills  More knowledge and skills on communication basics, communication media, multiplexers, power supplies and telephony.  Skills on termination of different types of network cables such as straight, crossed, rollover and serial cables.  Skills on preparation, splicing, termination and measurement of optical length for optic fiber.  Knowledge on termination as well as decommissioning from a krone case. 4.1.2 Interpersonal skills  The intern learnt and gained experience on how to effectively work as team player to gain great results. This was easy to attain because every assignment given was done in a group with the rest of the interns guided by the employees of the company.  The intern also learnt how to relate with the workmates as well as his supervisors and the other employees at work.  The intern learnt how to share challenges at work with the workmates as well as his seniors at work. This helped him not to face major step backs throughout the training period.
  • 51. 42 4.1.3 Communication skills  I learnt how to communicate with my supervisors as well as my other seniors at work in a way that reserves them the respect they deserve.  I was also happy to learn how to address my workmates in order to yield the best results most especially when we had a project to work on.  The intern was also able to learn how to address small groups of people since we used to have some departmental meetings and the interns were allowed to participate and address their challenges as well as take part in suggesting the way forward. 4.1.4 Others  In addition to the above, the intern also gained skills on time management and being punctual for work. The interns would also be given a certain duration with in which to finish the assignments given during the training.  The intern learnt how to cope with the rate of doing work in the 21st century as we would do some work with the employees and make sure we finish with them. 4.2 Challenges  Like anyone else in a new environment, communication with my seniors as well as fellow interns was a big challenge for the first week. However, it was fun getting to know them and even make new friends in them as time went on.  In some of the practical works done, the interns were limited from participating though we were allowed to have a close observation. This was so in order to reduce the risk of any danger befalling the interns since most of the work involved high voltages.  I faced a challenge of training with the busiest staff I have ever worked with. As a result, sometimes we were neglected alone in the store while other times it was hard to cope with the speed at which they were working but we later acquired a great experience of a true engineer.  Lack of a special documented Programme for the training. This was a big challenge in a way that I would report for work on a particular day not even knowing what I
  • 52. 43 was going to do for that day. We were however able to familiar with this experience and were always ready for any work that came up.  The other minor challenge faced was securing funds enough to cater for my daily transport and lunch. I thank God and my sponsors that I was able to overcome that and never missed any single day. 4.3 Recommendations Despite the great experience I had at UETCL during my two months of industrial training, there are some issues I wish to address to both Makerere University and UETCL that I believe would make the training more enjoyable when worked on. 4.3.1 To UETCL  More engagement of the trainees practically will help increase the experience and skills attained during this period.  A special training Programme laid on paper would help the interns to prepare for work and even yield better quality results that comes along with enough preparation.  Providing allowances for example lunch and transport allowances will encourage the trainees to work even harder and reduce on time waste soliciting money for transport and going out for lunch. 4.3.2 To Makerere University  Helping students to find internship places. I believe the greatest institution in the country can do better as far as getting her students internship slots than just issuing an introduction letter to the students.  Supervisors should always lay a timetable of when to supervise the students so as the students can be aware and prepare for their visits at the places of training.  More initiation to industrial training especially to students who are doing this for the first time. This will help students be aware of what this period is all about and what to expect during this time for better results.
  • 53. 44 4.4 Conclusion This report is the product of a successful industrial training period. I say successful because all I was able to meet all the objectives of this process thanks to the ‘best’ public limited company in Uganda, UETCL. It was my first industrial training of this kind but UETCL has made me feel like I have done this for the whole of my lifetime. The experience, skills and character I have attained through this period are enormous and will keep me going as I perceive my carrier. Through the stated challenges, I managed to go through this period successfully and attained all the achievements stated above. I believe if the above stated recommendations are put in consideration, it would ease this process for any party that wants to go through it. Lastly, I want to thank you for spending your precious time reading this small piece of writing and I hope you were able to pick a word of interest. May the almighty Father shower you with his wondrous benedictions.
  • 54. 45 REFERENCES Prof. Dr. M. Zitterbart. 2004/2005.Basics of Communication and the Internet www.uetcl.com www.keymile.com w3.siemens.com/.../SWT-3000-Teleprotection-technical-data.PDF w3.siemens.com/smartgrid/.../SWT-3000-Teleprotection.PDF http://en.wikipedia.org/wiki/Power-line_communication www.keymile.com/.../UMUX.../d1af978a-f24c-4b45-bb91-e37b021da3 en.wikipedia.org/wiki/Telephony www.webopedia.com en.wikipedia.org/wiki/Opticalfiber
  • 55. 46 APPENDIX 1 List of instructors I worked with during the training. Mr. Kibuuka Yusuf, Senior Communication Engineer Mr. Dauda Musinguzi, Senior Communication Engineer Mr. Cranmer Rwagize, Communication Engineer Mr. George Alioke, Communication Engineer Mr. Job Musalwa, Communication Engineer Ms. Carol Ssekamatte, Communication Engineer