Importance on switchgear, its teatings commesioning saving on losses instad of using stat delta starter use of VFDs with same operation but savings in losses

1. TESTING AND COMMESSIONING
OF
ELECTRICAL SWITCHGEAR

2. 
 A switchgear or electrical switchgear is a genetic
term which includes all the switching devices
associated with mainly power system protection.
 It also includes all devices associated with control,
metering and regulating of Electrical power system.
Assembly of such devices in a logical manner forms
a switchgear.
About Switchgear

3. 
1
100
Dec Jan Feb Mar
Losses in panel
Smooth operation
Protection of motor
Cost control

4. 
 Protects motor from running in Two Phases.
 Protects motor against reverse running
 Startup delay timer
 Protects motor against Unbalanced voltages.
 Inbuilt Current Transformer based Ampere
Meter.
Star-Delta starter PANELS

5. 
Devices Used in Panel
Contactor Terminal Connector

6. 
Devices Used in Panel
MCBRelay

7. 
Power circuit diagram

8. High Starting current
 Starting current
 = 7 x full load current
As speed increases, stator
current reduces

9. 
 High transmission and current peaks.
 Low Starting Torque.
 Six Terminal Motor Required (Delta Connected).
 Starting current is reduced to approximately one-
third of the rated current.
Losses in Star-Delta starter

10. 
 A Variable Frequency Drive (VFD) is a type of motor
controller that drives an electric motor by varying
the frequency and voltage supplied to the electric
motor.
Variable Frequency Drive(VFD)

11. 
Circuit Diagram of VFD(working)

12. 
 Reduce Energy Consumption and Energy Costs
 Increase Production Through Process Control
 Extend Equipment Life and Reduce Maintenance
 Energy savings
 High Power Factor
 Simple installation
Advantages VFD

13. 
Routine Test:
1) Functional test
2)Current Injuction
3)High Voltage Test
Type Test:
1)Temperature rise test
2)Partial Discharge test
TEST SCHEDULE

14. 
 Functional test: To check the basic function of, panel, like to
check the window of annunciator.
 Current Injection Test: In the current injection test ,we are
taking test on both side primary test as well as secondary test.
At the time of testing any one side will be shorted. so we can
testing the relay to with stand desirable current on the relay
setting.
 High Voltage Test: This test is conducted in order to protect the
equipment from high voltage. This type plays a very important
role.
Test Conducted(Routine Test)

15. 
 1)Conveyor: is used for transportation of material etc.By using
VFD we can control variable speed and also we can set typical
speed.
Applications
VFD Star/Delta starter
Frequency can be changed Frequency cannot be
changed
Ramp Up/down time can be
set
Ramp Up/down time
cannot be set

16. 
 2)Industrial Blower: is used for exhaust the dust and
generate vacuum in industries.
Applications
VFD Star/Delta starter
Speed can be changed as per
requirement
Speed cannot be changed
Automatic power can be
saved
Power saving cannot be
done

17. 
 3)Air compressor: is used for pneumatic systems for
modern industries.
Applications
VFD Star/Delta starter
Speed can be changed
compressor
loading/unloading time
Speed cannot be changed
compressor
loading/unloading time
So power saving can be
done
So power saving cannot be
done

18. 
 4)Pumps: is used for pumping of water, oil , gas,
etc.in industries.
Applications
VFD Star/Delta starter
Accurate control speed and
process
Accurate control speed and
process can’t get
Operation & monitoring can
be easily done
Operation & monitoring is
difficult

19. 
As this project was sponsored to us by Chaitanya
Enterprises. We have got the opportunity to work in the
industry and because of this we have learnt how to get
along and get the work done in the industry
we have manufactured and tested a control panel
whose Significant energy saving,Easy setup
&programming, Better design, Completive edge work
has been appreciated by the industry guide.
CONCLUSION