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PRODUCT CATALOGUEPRODUCT CATALOGUE
www.esitas.comwww.esitas.com

Company ProfileCompany Profile
M.V. Current TransformersM.V. Current Transformers
Technical Information About Current TransformersTechnical Information About Current Transformers
ATB 1O-BATB 1O-B
ATB 1O-BSATB 1O-BS / ATB 2O-BSATB 2O-BS
ATB 1O-1OATB 1O-1O // ATB 1O-15ATB 1O-15
ATB 2O-BATB 2O-B
ATB 2O-3AATB 2O-3A / ATB 2O-3BATB 2O-3B
ATATB 2O-1OB 2O-1O / ATB 2O-15ATB 2O-15
ATB 3O-SATB 3O-S
ATB 3O-4ATB 3O-4 / ATB 3O-5ATB 3O-5 / ATB 3O-1OATB 3O-1O
ATU 24ATU 24
ES24 C3-BES24 C3-B
ATD 1OATD 1O / 2O2O
ATN 17ATN 17 // ESO 17CESO 17C // ATN 24ATN 24
ATH 2OATH 2O / 2121 // 2222
ATH 3OATH 3O / 3232
ATH 3O-NATH 3O-N / 32-N32-N
ATH 52ATH 52
L.V Current TransformersL.V Current Transformers
KAP TypeKAP Type
A-Kap Type (Split Type)A-Kap Type (Split Type)
Indoor & Outdoor Ring TypeIndoor & Outdoor Ring Type
LPCT 115LPCT 115
LPCT 16OLPCT 16O
Voltage TransformersVoltage Transformers
Technical Information About Voltage TransformersTechnical Information About Voltage Transformers
VTB 1O-SVTB 1O-S / VTB 1O-KVTB 1O-K / VTB 2OVTB 2O / VTB 2O-KVTB 2O-K
VTB 3O-KVTB 3O-K
VT 2O-BVT 2O-B // VTB 3OVTB 3O
2 VTB 1O2 VTB 1O / 2 VTB 2O2 VTB 2O
2 VT 2O-B2 VT 2O-B / 2 VTB 32 VTB 3OO / 2 VT 4O-2OO2 VT 4O-2OO
VTB 1O-KFVTB 1O-KF / VTB 2O-KFVTB 2O-KF / VTB 3O-KFVTB 3O-KF
ES 12 VR-FES 12 VR-F / ES 24 V2-FES 24 V2-F
VTB 1O-SFVTB 1O-SF / VTB 1O-EFVTB 1O-EF/ VTB 2O-FVTB 2O-F
VTB 3O-FVTB 3O-F
ES 17 V3ES 17 V3
ES 24 V2-BES 24 V2-B
ES 24 V1ES 24 V1
VTU 24VTU 24
VTH 2OVTH 2O / VTH 3OVTH 3O
VTH 2O-NVTH 2O-N / VTH 3O-NVTH 3O-N
2VTH 2O2VTH 2O / 2VTH 3O2VTH 3O
2VTH 2O-N2VTH 2O-N / 2VTH 3O-N2VTH 3O-N
InsulatorsInsulators
Technical Information About InsulatorsTechnical Information About Insulators
Special ProductsSpecial Products
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CONTENTSCONTENTS
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22
GENERAL INFORMATION ABOUT ESITAS GROUP COMPANIESGENERAL INFORMATION ABOUT ESITAS GROUP COMPANIES
Mission StatementMission Statement
‘’ As Esitas Group, we aim to be the main supplier of the market leaders in the world transformer‘’ As Esitas Group, we aim to be the main supplier of the market leaders in the world transformer
industry and to be a permanent player in the developing countries; by keeping our leader positionindustry and to be a permanent player in the developing countries; by keeping our leader position
in domestic market in instrument transformers and increasing awareness of our products in thein domestic market in instrument transformers and increasing awareness of our products in the
global market, together with continuously improving our existent quality and introducing innovati-global market, together with continuously improving our existent quality and introducing innovati-
ons in order to increase efficiency for ourselves and our customers.ons in order to increase efficiency for ourselves and our customers.
Group Companies:Group Companies:
Esitas Brand has been in the transformer industry more than 25 years. Esitas Group CompaniesEsitas Brand has been in the transformer industry more than 25 years. Esitas Group Companies
have been producing and serving the electrical products and contacting businesses with twohave been producing and serving the electrical products and contacting businesses with two
factories specializing in their markets.factories specializing in their markets.
ESITAS ELEKTRIKESITAS ELEKTRIK is the parent company of the group located in Istanbul, Turkey producesis the parent company of the group located in Istanbul, Turkey produces
and sells Low and Medium Voltage Instrument Transformers (both Current - Voltage and Indoor-and sells Low and Medium Voltage Instrument Transformers (both Current - Voltage and Indoor-
Outdoor Types), Low and Medium Voltage Insulators and LPCT’s.Outdoor Types), Low and Medium Voltage Insulators and LPCT’s.
ESITAS ELEKTRIK is in the preferred suppliers list of Turkish Electric Authority, has been selling toESITAS ELEKTRIK is in the preferred suppliers list of Turkish Electric Authority, has been selling to
many foreign electricity authorities and to various branches of multinational market leaders in themany foreign electricity authorities and to various branches of multinational market leaders in the
industry like ABB, Schneider, Siemens and others.industry like ABB, Schneider, Siemens and others.
COMPANY PROFILECOMPANY PROFILE

3
PT ESITAS PACIFICPT ESITAS PACIFIC is the Group’s production plant located in Jakarta Indonesia produces and sellsis the Group’s production plant located in Jakarta Indonesia produces and sells
Low and Medium Voltage Instrument Transformers (both Current-Voltage and Indoor-Outdoor Types),Low and Medium Voltage Instrument Transformers (both Current-Voltage and Indoor-Outdoor Types),
Low and Medium Voltage Insulators. Indonesia founded to serve the customers more convenientlyLow and Medium Voltage Insulators. Indonesia founded to serve the customers more conveniently
in Asia Pacific zone and to further furnish its existence in the world market.in Asia Pacific zone and to further furnish its existence in the world market.
With its mission of ‘’ ... continuously improving our existent quality and introducing innovationsWith its mission of ‘’ ... continuously improving our existent quality and introducing innovations
in order to increase efficiency for ourselves and our customers’’, Esitas is your partner in the worldin order to increase efficiency for ourselves and our customers’’, Esitas is your partner in the world
transformer market.transformer market.

CURRENT TRANSFORMERSCURRENT TRANSFORMERS
6
General DefinitionsGeneral Definitions
General definitions have been given according to International Standarts IEC 6OO44General definitions have been given according to International Standarts IEC 6OO44.
Instrument TransformerInstrument Transformer
A transformer intended to supply measuring instruments meters, protection relays and other similiar apparatus.A transformer intended to supply measuring instruments meters, protection relays and other similiar apparatus.
Applicable StandardsApplicable Standards
Our transformers comply with applicable national and international standards.Our transformers comply with applicable national and international standards.
Current TransformersCurrent Transformers
An instrument transformer in which the secondary current, in normal conditions of useAn instrument transformer in which the secondary current, in normal conditions of use, is substantially proportional to the primaryis substantially proportional to the primary
current and differs in phase from it by angle which is approximately zero for an appropriate direction of the connections.current and differs in phase from it by angle which is approximately zero for an appropriate direction of the connections.
It isolates the instrument and protection circuit from the primary side and protect the devices against overload according to theIt isolates the instrument and protection circuit from the primary side and protect the devices against overload according to the
overcurrent characteristics of the transformer. Current transformers can have several secondary windings with cores of identical ofovercurrent characteristics of the transformer. Current transformers can have several secondary windings with cores of identical of
different characteristics completely isolated from each other.different characteristics completely isolated from each other.
Measuring Current TransformerMeasuring Current Transformer
A current transformer intended to supply indicating instruments, integrating meters and similiar apparatus.A current transformer intended to supply indicating instruments, integrating meters and similiar apparatus.
Protective Current TransformerProtective Current Transformer
A current transformer intended to supply protective relays.A current transformer intended to supply protective relays.
Primary WindingPrimary Winding
The winding through which flows the current to be transformed.The winding through which flows the current to be transformed.
Secondary WindingSecondary Winding
The winding, which supplies the current circuits of measuring instruments, meters, relays or similiar devices.The winding, which supplies the current circuits of measuring instruments, meters, relays or similiar devices.
Secondary CircuitSecondary Circuit
The external circuit supplied by the secondary winding of a transformer.The external circuit supplied by the secondary winding of a transformer.
Rated Primary CurrentRated Primary Current
The value of the primary current on which the performance of the transformer is based.The value of the primary current on which the performance of the transformer is based.
Rated Secondary CurrentRated Secondary Current
The value of the secondary current on which the performance of the transformer is based.The value of the secondary current on which the performance of the transformer is based.
Rated Transformation RatioRated Transformation Ratio
The ratio of rated primary current to the rated secondary current (I1NThe ratio of rated primary current to the rated secondary current (I1N/I2N-i.e. 1OOI2N-i.e. 1OO/5A)5A)
Current Error (Ratio Error)Current Error (Ratio Error)
The error which a transformer introduces into the measurement of a current and which arises from the fact that the actualThe error which a transformer introduces into the measurement of a current and which arises from the fact that the actual
transformation ratio is not equal to the rated transformation ratio.transformation ratio is not equal to the rated transformation ratio.
The current error expressed in per cent is given by formula:The current error expressed in per cent is given by formula:
Current ErrorCurrent Error % (Kn Is - Ip)(Kn Is - Ip)
WhereWhere
Kn is the rated transformation ratio;Kn is the rated transformation ratio;
Ip is the actual primary currentIp is the actual primary current
Is is the actual secondary current when Ip is flowing under the conditions of measurements.Is is the actual secondary current when Ip is flowing under the conditions of measurements.

Accuracy ClassAccuracy Class
A designation assigned to a current transformer errors of which remain within specified limits under prescribed conditions of use.A designation assigned to a current transformer errors of which remain within specified limits under prescribed conditions of use.
BurdenBurden
The impedance of the secondary circuit in ohms and power-factor. The burden is usually expressed as the apparent power inThe impedance of the secondary circuit in ohms and power-factor. The burden is usually expressed as the apparent power in
voltamperes absorbed at a specified power-factor and at the rated secondary current.voltamperes absorbed at a specified power-factor and at the rated secondary current.
Rated BurdenRated Burden
The value of the burden on which the accuracy requirements are based on.The value of the burden on which the accuracy requirements are based on.
Rated OutputRated Output
The value of the apparent power (in voltamperes at a specified power-factor) which the transformer is intended to supply to theThe value of the apparent power (in voltamperes at a specified power-factor) which the transformer is intended to supply to the
secondary circuit at the rated secondary current and with rated burden connected to it.secondary circuit at the rated secondary current and with rated burden connected to it.
Rated Insulation LevelRated Insulation Level
The combination of voltage values which characterizes the insulation of a transformer with regard to its capability to whitstandThe combination of voltage values which characterizes the insulation of a transformer with regard to its capability to whitstand
dielectric stresses.dielectric stresses.
Rated FrequencyRated Frequency
This is the frequency for which the transformer is designed and given in Hz on the rating plate.This is the frequency for which the transformer is designed and given in Hz on the rating plate.
Rated Short-Time Thermal Current (Ith)Rated Short-Time Thermal Current (Ith)
The r.m.s. value of the primary current which a transformer will withstand for one second without suffering harmful effectsThe r.m.s. value of the primary current which a transformer will withstand for one second without suffering harmful effects
the secondary winding being short-circuited.the secondary winding being short-circuited.
Rated Dynamic Current (ldyn)Rated Dynamic Current (ldyn)
The peak value of the primary current which a transformer will withstand without being damaged electrically or mechanicallyThe peak value of the primary current which a transformer will withstand without being damaged electrically or mechanically
by the resulting electromagnetic forces the secondary winding being short-circuited.by the resulting electromagnetic forces the secondary winding being short-circuited.
Rated Continuous Thermal CurrentRated Continuous Thermal Current
The value of the current which can be permitted to flow continuously in the primary winding the secondary winding beingThe value of the current which can be permitted to flow continuously in the primary winding the secondary winding being
connected to the rated burden without temperature rise exceeding the values specified.connected to the rated burden without temperature rise exceeding the values specified.
7

8
CONNECTION DIAGRAMSCONNECTION DIAGRAMS
Single Ratio Current TransformersSingle Ratio Current Transformers
S1S1 S2S2 1S11S1 1S21S2 2S12S1 2S22S2 3S13S1
Multi CoresMulti Cores
3S23S2
P1P1 P1P1 P2P2P2P2
Single CoreSingle Core
Reconnection of Current TransformerReconnection of Current Transformer
In case of changeable ratios, it is possible to design the transformer with primary reconnection or secondary tapping;In case of changeable ratios, it is possible to design the transformer with primary reconnection or secondary tapping;
Primary ReconnectionPrimary Reconnection
Changeover will be done at the primaryChangeover will be done at the primary
side by using joint bars.side by using joint bars.
Can be used only for primary currents up to 2 x 6OOACan be used only for primary currents up to 2 x 6OOA
Secondary TappingSecondary Tapping
Changeover will be done at the secondary side.Changeover will be done at the secondary side.
S1S1 S2S2
P1P1 C1C1 C2C2 P2P2
C1 -C2 short circuited: low rated currentC1 -C2 short circuited: low rated current
P1 - C1 and P2 - C2 short circuited: high rated currentP1 - C1 and P2 - C2 short circuited: high rated current
S1 -S2 low rated currentS1 -S2 low rated current
S1 - S3 high rated currentS1 - S3 high rated current
P1P1
S1S1 S2S2 S3S3
P2P2

Safety Operation Conditions for Current TransformersSafety Operation Conditions for Current Transformers
9
- The secondary circuit of a current transformer must not be operated with an open - circuit.- The secondary circuit of a current transformer must not be operated with an open - circuit.
- The secondary winding of a current transformer which will not be used must- The secondary winding of a current transformer which will not be used must
be short - circuited and earthed as seen in Diagram-2be short - circuited and earthed as seen in Diagram-2
- When the secondary terminals are connected to the measuring or protection devices- When the secondary terminals are connected to the measuring or protection devices
one of the terminals should be earthed for safety as seen in Diagram-1.one of the terminals should be earthed for safety as seen in Diagram-1.
- For the transformer with reconnectable and - or tapped secondaries- For the transformer with reconnectable and - or tapped secondaries
unused terminals must be left open as seen in Diagram-3.unused terminals must be left open as seen in Diagram-3.
- The current transformers which have capacitive divider tap (Ck) must be connected to the indicator if the tap will- The current transformers which have capacitive divider tap (Ck) must be connected to the indicator if the tap will
not be used then it must be earthed.not be used then it must be earthed.
S1S1 S2S2
P1P1 P2P2
A
Diagram-1Diagram-1
S1S1 S2S2
P1P1 P2P2
Diagram-2Diagram-2
S1S1 S2S2
S3 openS3 open
P1P1 P2P2
A
Diagram-3Diagram-3
M.V. CURRENT TRANSFORMERS CONNECTION CLEARENCESM.V. CURRENT TRANSFORMERS CONNECTION CLEARENCES
a b
Insulation LevelInsulation Level
12kV12kV
24kV24kV
36kV36kV
a minimuma minimum
1OOmm1OOmm
19Omm19Omm
3O5mm3O5mm
b minimumb minimum
11Omm11Omm
21Omm21Omm
325mm325mm

1010
Technical DataTechnical Data
- Up to 3 cores- Up to 3 cores*
- On request with capacitive layer.- On request with capacitive layer.
- On request with barrier.- On request with barrier.
INDOOR SUPPORT TYPE CAST RESIN INSULATED CURRENT TRANSFORMERSINDOOR SUPPORT TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS
(Um=3,6kV .............. 12kV BLOCK TYPES)(Um=3,6kV .............. 12kV BLOCK TYPES)
TYPESTYPES ATB 1O-BATB 1O-B ATB 1O-B2ATB 1O-B2 ATB 1O-B3ATB 1O-B3 ATB 1O-2ATB 1O-2
Operating voltage, Um (kV)Operating voltage, Um (kV)
Rated power-frequency withstand voltage (1 minute) (kV)Rated power-frequency withstand voltage (1 minute) (kV)
Rated frequency (Hz)Rated frequency (Hz)
Primary rated current (A)Primary rated current (A)
Primary reconnection (A)Primary reconnection (A)
Secondary rated current (A)Secondary rated current (A)
Metering classesMetering classes
Protection classesProtection classes
Rated short-time thermal current (lth) (1s) (kA)Rated short-time thermal current (lth) (1s) (kA)
Rated dynamic current (ldyn) (kA)Rated dynamic current (ldyn) (kA)
Short-time load (mechanical) (N)Short-time load (mechanical) (N)
Insulation classInsulation class
Ambient temperature (˚C)Ambient temperature (˚C)
Altitude (m)Altitude (m)
StandardStandard
Weight (approx.) (kg)Weight (approx.) (kg)
3,6 7,2 123,6 7,2 12
1O 2O 281O 2O 28
4O 6O 754O 6O 75
5O-6O5O-6O
5 - 25OO5 - 25OO
2 x 5 - 2 x 6OO2 x 5 - 2 x 6OO
1-51-5
O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
5P- 1OP; CI:PX Acc. to IEC 6OO44-15P- 1OP; CI:PX Acc. to IEC 6OO44-1
max. 1OOO x Inmax. 1OOO x In
2,5 x lth2,5 x lth
5OOO5OOO
E
-25 ........... +4O-25 ........... +4O****
1OOO1OOO
According to the customer requirementsAccording to the customer requirements
2O - 252O - 25 28 - 3328 - 33 33 - 3633 - 36 3636
(On request 3OOOA 1.Oxln(On request 3OOOA 1.Oxln / Cont. &Cont. &
Insulation class B )Insulation class B )
On request operating voltage of 17,5 kV is available.On request operating voltage of 17,5 kV is available.
* For more cores please contact with ESITAS for feasibility.For more cores please contact with ESITAS for feasibility.
** It can be produced according to customer's specified ambient temperature.Please contact with ESiTAS for feasibility.It can be produced according to customer's specified ambient temperature.Please contact with ESiTAS for feasibility.

1111
-- All dimensions are in mm.All dimensions are in mm.
-- Tolerances are according to DIN 7168-g when not specified.Tolerances are according to DIN 7168-g when not specified.
-- Esitas reserves the right to change the specifications and the dimensions of the goods. Please ask for updated information.Esitas reserves the right to change the specifications and the dimensions of the goods. Please ask for updated information.
-- Customer designed products are also available.Customer designed products are also available.
INDOOR SUPPORT TYPE CAST RESIN INSULATED C.T.’S TECHNICAL DRAWINGINDOOR SUPPORT TYPE CAST RESIN INSULATED C.T.’S TECHNICAL DRAWING
TIGHTENING TORQUE (Nm)TIGHTENING TORQUE (Nm)
M5 (Secondary Terminal)M5 (Secondary Terminal)
M8 (Ground Terminal)M8 (Ground Terminal)
M12 (Primary Terminal)M12 (Primary Terminal)
min.
2.5
max.
3.5
15 2O
6O 7O
TYPESTYPES
ATB 1O-BATB 1O-B
ATB 1O-B2ATB 1O-B2
ATB 1O-B3ATB 1O-B3
ATB 1O-2ATB 1O-2
A B C D E F G H
355 155 22O 148 29O 125 27O
395 195 22O 148 33O 125 31O
2O
2O
455 255 22O 148 39O 125 37O 2O
355 155 22O 175 29O 15O 27O 2O

1212
- Up to 3 cores- Up to 3 cores*
(Um=3,6kV ...... 12kV, 17,5 ...... 24kV NEW BLOCK TYPES)(Um=3,6kV ...... 12kV, 17,5 ...... 24kV NEW BLOCK TYPES)
** On request ATB 1O-BS operating voltage of 17,5kV is available.On request ATB 1O-BS operating voltage of 17,5kV is available.
*** It can be produced according to customer's specified ambient temperature.Please contact with ESITAS for feasibility.It can be produced according to customer's specified ambient temperature.Please contact with ESITAS for feasibility.
TYPESTYPES ATB 1O-BSATB 1O-BS ATB 2O-BSATB 2O-BS
StandardStandard
3,6 7,2 123,6 7,2 12
1O 2O 281O 2O 28
4O 6O 754O 6O 75
17,5 2417,5 24
38 5O38 5O
95 12595 125
5O-6O5O-6O
5 - 25OO5 - 25OO
2 x 5 - 2 x 6OO2 x 5 - 2 x 6OO
1-51-5
2,5 x lth2,5 x lth
5OOO5OOO
E
-25 ........... +4O-25 ........... +4O******
1OOO1OOO
2O - 252O - 25 3O3O
**

1313
(Um=3,6kV ...... 12kV, 17,5 ...... 24kV NEW BLOCK TYPES)(Um=3,6kV ...... 12kV, 17,5 ...... 24kV NEW BLOCK TYPES)
TYPESTYPES
ATB 1O-BSATB 1O-BS
ATB 2O-BSATB 2O-BS
A B C D E F G H I J
355 155 22O 148 299 135 -
355 155 28O 178 3OO 135 34O
125
15O
27O
28O
2O
2O
min.
2.5
max.
3.5
15 2O
6O 7O
8Omm will be8Omm will be
7Omm at7Omm at
ATB1O-BSATB1O-BS

1414
TYPESTYPES ATB 1O-1OATB 1O-1O ATB 1O-15ATB 1O-15
Rated dynamic current (ldyn)Rated dynamic current (ldyn) (kA)(kA)
StandardStandard
3,63,6 7,27,2 1212
1O1O 2O2O 2828
4O4O 6O6O 7575
5O-6O5O-6O
5-up to 125O5-up to 125O
2x5- 2x6OO2x5- 2x6OO
1-51-5
(max. 2OO x In)(max. 2OO x In)****
2,5 x lth2,5 x lth
5OOO5OOO
E
-25 ........... +4O-25 ........... +4O******
1OOO1OOO
1212 1717
On request operating voltage of 17,5 kV is available.On request operating voltage of 17,5 kV is available.
** For more cores please contact with ESITAS for feasibility.For more cores please contact with ESITAS for feasibility.
**** May vary according to requested primary current and core values.May vary according to requested primary current and core values.
****** It can be produced according to customer's specified ambient temperature. Please contact with ESiTAS for feasibility.It can be produced according to customer's specified ambient temperature. Please contact with ESiTAS for feasibility.
Types: ATB 1O-1OTypes: ATB 1O-1O
ATB 1O-15ATB 1O-15
- ATB 1O-1O up to 1 core- ATB 1O-1O up to 1 core*
- ATB 1O-15 up to 2 cores.- ATB 1O-15 up to 2 cores.*
(Um=3,6kV .............. 12kV NARROW BLOCK TYPES)(Um=3,6kV .............. 12kV NARROW BLOCK TYPES)

1515
INDOOR SUPPORT TYPE CAST RESIN INSULATED C.T.INDOOR SUPPORT TYPE CAST RESIN INSULATED C.T.’S TECHNICAL DRAWINGS TECHNICAL DRAWING
TYPESTYPES
ATB 1O-1OATB 1O-1O
ATB 1O-15ATB 1O-15
A B C D E F G
33O 155 22O 148 125 27O 2O
33O 155 22O 148 125 27O 2O
min.
2.5
max.
3.5
15 2O
6O 7O

1616
- Up to 3 cores.- Up to 3 cores.*
** It can be produced according to customer's specified ambient temperature.Please contact with ESITAS for feasibility.It can be produced according to customer's specified ambient temperature.Please contact with ESITAS for feasibility.
TYPESTYPES
StandardStandard
17.5 2417.5 24
38 5O38 5O
95 12595 125
5O-6O5O-6O
5 - 25OO5 - 25OO
2 x 5 - 2 x 6OO2 x 5 - 2 x 6OO
1-51-5
2,5 x lth2,5 x lth
5OOO5OOO
E
-25 ........... +4O-25 ........... +4O****
1OOO1OOO
3O3O 4242 4444 4444 5555 7O7O
ATB 2O-BATB 2O-B ATB 2O-B2ATB 2O-B2 ATB 2O-B4ATB 2O-B4 ATB 2O-3ATB 2O-3 ATB 2O-3BATB 2O-3B ATB 2O-3KATB 2O-3K

INDOOR SUPPORT TYPE CAST RESIN INSULATEDINDOOR SUPPORT TYPE CAST RESIN INSULATED C.T.’S TECHNICAL DRAWINGC.T.’S TECHNICAL DRAWING
1717
455 197 28O 218 39O 195 19O 375 22
TYPESTYPES
ATB 2O-BATB 2O-B
ATB 2O-B2ATB 2O-B2
ATB 2O-B4ATB 2O-B4
ATB 2O-3ATB 2O-3
ATB 2O-3BATB 2O-3B
ATB 2O-3KATB 2O-3K
A B C D E F G H I
355 155 28O 178 29O 145 15O 28O 2O
355 155 28O 2O5 29O 145 18O 28O 17
355 155 28O 218 29O 145 19O 28O 17
455 197 28O 178 39O 195 15O 375 22
455 197 28O 2O5 39O 195 18O 375 22
min.
2.5
max.
3.5
15 2O
6O 7O

1818
Types: ATB 2O-3ATypes: ATB 2O-3A
ATB 2O-3BATB 2O-3B
(Um=17,5kV .............. 24kV NEW BLOCK TYPES)(Um=17,5kV .............. 24kV NEW BLOCK TYPES)
TYPESTYPES
StandardStandard
17.5 2417.5 24
38 5O38 5O
95 12595 125
5O-6O5O-6O
5 - 25OO5 - 25OO
2 x 5 - 2 x 6OO2 x 5 - 2 x 6OO
1-51-5
2,5 x lth2,5 x lth
5OOO5OOO
E
-25 ........... +4O-25 ........... +4O****
1OOO1OOO
4444 5555
ATB 2O-3BATB 2O-3BATB 2O-3AATB 2O-3A

(Um=17,5kV .............. 24kV NEW BLOCK TYPES)(Um=17,5kV .............. 24kV NEW BLOCK TYPES)
1919
TYPESTYPES
ATB 2O-3AATB 2O-3A
ATB 2O-3BATB 2O-3B
A B C D E F G H
455 28O 178 39O 14O 15O 375
455 28O 2O5 39O 14O 18O 375 2O
2O
min.
2.5
max.
3.5
15 2O
6O 7O

2020
Types: ATB 2O-1OTypes: ATB 2O-1O
ATB 2O-15ATB 2O-15
- ATB 2O-1O up to 1 core- ATB 2O-1O up to 1 core*
- ATB 2O-15 up to 2 cores.- ATB 2O-15 up to 2 cores.*
TYPESTYPES
StandardStandard
17.5 2417.5 24
38 5O38 5O
95 12595 125
5O-6O5O-6O
5 up to 125O5 up to 125O
2 x 5 - 2 x 6OO2 x 5 - 2 x 6OO
1-51-5
(max. 3OO x In)(max. 3OO x In)****
2,5 x lth2,5 x lth
5OOO5OOO
E
-25 ........... +4O-25 ........... +4O******
1OOO1OOO
2222 3O3O
ATB 2O-15ATB 2O-15ATB 2O-1OATB 2O-1O
** May vary according to requested primary current and core values.May vary according to requested primary current and core values.

2121
TYPESTYPES
ATB 2O-1OATB 2O-1O
ATB 2O-15ATB 2O-15
A B C D E F G
335 155 28O 178 15O 28O 2O
335 155 28O 178 15O 28O 2O
min.
2.5
max.
3.5
15 2O
6O 7O

2222
(Um=36kV BLOCK TYPES)(Um=36kV BLOCK TYPES)
TYPESTYPES
StandardStandard
3636
7O7O
17O17O
5O-6O5O-6O
5 - 25OO5 - 25OO
2 x 5 - 2 x 6OO2 x 5 - 2 x 6OO
1-51-5
2,5 x lth2,5 x lth
5OOO5OOO
E
-25 ........... +4O-25 ........... +4O****
1OOO1OOO
ATB 3O-SATB 3O-S ATB 3O-S1ATB 3O-S1 ATB 3O-1ATB 3O-1 ATB 3O-2ATB 3O-2 ATB 3O-3ATB 3O-3
3535 3737 4O4O 4646 5151

(Um=36kV BLOCK TYPES)(Um=36kV BLOCK TYPES)
2323
- Tolerances are according to DIN 7168-g when not specified.Tolerances are according to DIN 7168-g when not specified.
- Esitas reserves the right to change the specifications and the dimensions of the goods. Please ask for updated information.Esitas reserves the right to change the specifications and the dimensions of the goods. Please ask for updated information.
- Customer designed products are also available.Customer designed products are also available.
min.
2.5
max.
3.5
15 2O
6O 7O
TYPESTYPES
ATB 3O-SATB 3O-S
ATB 3O-S1ATB 3O-S1
ATB 3O-1ATB 3O-1
A B C D E F G H I J
385 17O 36O 255 25O 125 21O 225
385 17O 36O 255 27O 135 22O 225
385 17O 36O 255 27O 135 22O 225
3OO
3OO
3OO
2O
2O
2O
ATB 3O-2ATB 3O-2 385 17O 36O 255 31O 155 24O 225 3OO 2O
ATB 3O-3ATB 3O-3 455 21O 36O 255 389 195 249 225 375 2O

2424
(Um=36kV NARROW BLOCK TYPES)(Um=36kV NARROW BLOCK TYPES)
- ATB 3O-4- ATB 3O-4, 3O-53O-5, 3O-1O up to 1 core.3O-1O up to 1 core.*
- ATB 3O-15 up to 2 cores.- ATB 3O-15 up to 2 cores.**
- ATB 3O-1O & ATB 3O-15 with barrier on request.- ATB 3O-1O & ATB 3O-15 with barrier on request.
** May vary according to requested primary current and core values.May vary according to requested primary current and core values.
5 - up to 6OO5 - up to 6OO
2x5 - 2x3OO2x5 - 2x3OO
5 - up to 125O5 - up to 125O
2x5 - 2x6OO2x5 - 2x6OO
TYPESTYPES
3636
7O7O
17O17O
5O-6O5O-6O
1-51-5
StandardStandard
2,5 x lth2,5 x lth
5OOO5OOO
E
-25 ........... +4O-25 ........... +4O******
1OOO1OOO
2O2O 2222 2525 3535
ATB 3O-4ATB 3O-4 ATB 3O-5ATB 3O-5 ATB 3O-1OATB 3O-1O ATB 3O-15ATB 3O-15
max. 3OOxInmax. 3OOxIn**
(for 1(for 1
measurementmeasurement
core)core)
(for 1(for 1
core)core)
(for 1(for 1
core)core)
(for 2 cores)(for 2 cores)

(Um=36kV NARROW BLOCK TYPES)(Um=36kV NARROW BLOCK TYPES)
2525
M 12 (Primary Terminal)M 12 (Primary Terminal)
min.
2.5
max.
3.5
15 2O
6O 7O
TYPESTYPES
ATB 3O-4ATB 3O-4
ATB 3O-5ATB 3O-5
ATB 3O-1OATB 3O-1O
ATB 3O-15ATB 3O-15
A B C D E F G H I J
385 17O 36O 255 2OO 1OO 18O 225
385 17O 36O 255 25O 125 21O 225
385 17O 36O 255 25O 125 21O 225
385 17O 36O 255 25O 125 21O 225
3OO
3OO
3OO
3OO
2O
2O
2O
2O

2626
Types: ATU 24Types: ATU 24
INDOOR SUPPORT TYPE CAST RESIN INSULATED NARROW TYPE CURRENT TRANSFORMERSINDOOR SUPPORT TYPE CAST RESIN INSULATED NARROW TYPE CURRENT TRANSFORMERS
(Um=7,2kV .......... 24kV BLOCK TYPES)(Um=7,2kV .......... 24kV BLOCK TYPES)
- Up to 2 cores.- Up to 2 cores.
* May vary according to requested primary current and core values.May vary according to requested primary current and core values.
** It can be produced according to customer’s specified ambient temperature. Please contact with ESITAS for feasibility.It can be produced according to customer’s specified ambient temperature. Please contact with ESITAS for feasibility.
StandardStandard
1-51-5
5P- 1OP Acc. to IEC 6OO44-15P- 1OP Acc. to IEC 6OO44-1
1OO x In1OO x In*
2,5 x lth2,5 x lth
5OOO5OOO
E
-25............+4O-25............+4O****
1OOO1OOO
2424
TYPESTYPES
7,2 12 17,5 247,2 12 17,5 24
2O 28 38 5O2O 28 38 5O
6O 75 95 1256O 75 95 125
5O-6O5O-6O
1O - up to 8OO1O - up to 8OO
2x1O - 2x4OO2x1O - 2x4OO
ATU 24ATU 24

INDOOR SUPPORT TYPE CAST RESIN INSULATED NARROW TYPE C.T.’SINDOOR SUPPORT TYPE CAST RESIN INSULATED NARROW TYPE C.T.’S
TECHNICAL DRAWINGTECHNICAL DRAWING
2727

2828
Types: ES24 C3-BTypes: ES24 C3-B
INDOOR SUPPORT TYPE CAST RESIN INSULATED SPECIAL TYPEINDOOR SUPPORT TYPE CAST RESIN INSULATED SPECIAL TYPE
(Um=7,2kV .......... 24kV BLOCK TYPES)
- Up to 2 cores.- Up to 2 cores.
* May vary according to requested primary current and core values.May vary according to requested primary current and core values.
Ambient temperatureAmbient temperature (˚C)(˚C)
StandardStandard
1-51-5
5P-1OP-PX Acc. to IEC 6OO44-15P-1OP-PX Acc. to IEC 6OO44-1
Up to 6OkAUp to 6OkA*
2,5 x lth2,5 x lth
5OOO5OOO
E
-25............+4O-25............+4O****
1OOO1OOO
2525
TYPESTYPES
7,2 12 17,5 247,2 12 17,5 24
2O 28 38 5O2O 28 38 5O
6O 75 95 1256O 75 95 125
5O-6O5O-6O
1O - up to 8OO1O - up to 8OO
2x1O - 2x4OO2x1O - 2x4OO
ES24 C3-BES24 C3-B
PES)

INDOOR SUPPORT TYPE CAST RESIN INSULATED SPECIAL TYPE C.T.’SINDOOR SUPPORT TYPE CAST RESIN INSULATED SPECIAL TYPE C.T.’S
TECHNICAL DRAWINGTECHNICAL DRAWING
2929

3030
INDOOR POST BUSBAR TYPE CAST RESIN INSULATED CURRENT TRANSFORMERSINDOOR POST BUSBAR TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS
(Um=3,6kV ....................24kV)(Um=3,6kV ....................24kV)
StandardStandard
1-51-5
max. 1OOmax. 1OO
Practically UnlimitedPractically Unlimited
3OOO3OOO
E
-25 ........... +4O-25 ........... +4O****
1OOO1OOO
1919 3434
TYPESTYPES
3,6 7,2 123,6 7,2 12
1O 2O 281O 2O 28
4O 6O 754O 6O 75
17,5 2417,5 24
38 5O38 5O
95 12595 125
5O-6O5O-6O
8OO-3OOO8OO-3OOO 8OO-4OOO8OO-4OOO
ATD 1OATD 1O ATD 2OATD 2O

INDOORINDOOR POST BUSBARPOST BUSBAR TYPE CAST RESIN INSULATEDTYPE CAST RESIN INSULATED C.T.’S TECHNICAL DRAWINGC.T.’S TECHNICAL DRAWING
(Um=3,6kV ..............24kV)(Um=3,6kV ..............24kV)
3131
- Tolerance is DIN 7168-g .Tolerance is DIN 7168-g .
min.
2.5
max.
3.5
TYPESTYPES
ATD 1OATD 1O
ATD 2OATD 2O
A B C D E F G H I
28O 1O2 342 214 215 235 158 155
28O 1O2 427 26O 26O 295 158 155
23
23

3232
INDOOR POST BUSBAR TYPE CAST RESIN INSULATED CURRENT TRANSFORMERSINDOOR POST BUSBAR TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS
(Um=3,6kV............24kV)(Um=3,6kV............24kV)
StandardStandard
1-51-5
max. 1OOmax. 1OO
Practically UnlimitedPractically Unlimited
3OOO3OOO
E
-25 ........... +4O-25 ........... +4O****
1OOO1OOO
3535 4O4O 3838
TYPESTYPES
3,6 7,2 12 17,53,6 7,2 12 17,5
1O 2O 28 381O 2O 28 38
4O 6O 75 954O 6O 75 95
17,5 2417,5 24
38 5O38 5O
95 12595 125
5O-6O5O-6O
8OO-4OOO8OO-4OOO
ATN 17ATN 17 ATN 24ATN 24ESO 17CESO 17C

3333
- Tolerance is DIN 7168-g.Tolerance is DIN 7168-g.
M5 (Secondary Terminal)M5 (Secondary Terminal) 2,5 3,5
TIGHTENING TORQUE (Nm)TIGHTENING TORQUE (Nm) min. max.
INDOOR POST BUSBAR TYPE CAST RESIN INSULATEDINDOOR POST BUSBAR TYPE CAST RESIN INSULATED C.T.’S TECHNICAL DRAWINGC.T.’S TECHNICAL DRAWING
(Um=3,6kV............24kV)(Um=3,6kV............24kV)
ATN 17 (width 15Omm )ATN 17 (width 15Omm ) ATN 17ATN 17 (width 28Omm )(width 28Omm )
ATN 24ATN 24 ESO 17CESO 17C

3434
OUTDOOR DRY TYPE CAST RESIN INSULATED CURRENT TRANSFORMERSOUTDOOR DRY TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS
(Um=3,6kV ....................24kV)(Um=3,6kV ....................24kV)
- ATH 2O up to 1 core.- ATH 2O up to 1 core.*
- ATH 21 up to 2 cores.- ATH 21 up to 2 cores.*
Min. creepage distance (mm)Min. creepage distance (mm)
StandardStandard
1-51-5
2,5 x lth2,5 x lth
24OO24OO
E
56O56O 825825 77O77O
2424 3535 7878
TYPESTYPES
3,6 7,2 123,6 7,2 12
1O 2O 281O 2O 28
4O 6O 754O 6O 75
17,5 2417,5 24
38 5O38 5O
95 12595 125
5O-6O5O-6O
5-125O5-125O 5-25OO5-25OO
2x5 - 2x4OO2x5 - 2x4OO 2x5 - 2x6OO2x5 - 2x6OO
ATH 2OATH 2O ATH 21ATH 21 ATH 22ATH 22
For the connectionFor the connection
of aluminium conductorsof aluminium conductors
steel reinforcedsteel reinforced

OUTDOOR DRY TYPE CAST RESIN INSULATEDOUTDOOR DRY TYPE CAST RESIN INSULATED C.T.’S TECHNICAL DRAWINGC.T.’S TECHNICAL DRAWING
(Um=3,6kV ....................24kV)(Um=3,6kV ....................24kV)
3535
TYPESTYPES
ATH 2OATH 2O
A B C D E F G H
245 1O5
max.
35O
max.
37O
max.
38O
max.
225
max.
34O
max.
415
22O 178 175 2O
ATH 21ATH 21 35O 165 3OO 27O 2OO 65
ATH 22ATH 22 4OO 195 37O 34O 25O 7O
M6 (Secondary Terminal)M6 (Secondary Terminal) 3 5
M12 (Primary & Ground Terminal)M12 (Primary & Ground Terminal) 6O 7O

3636
Types: ATH 3OTypes: ATH 3O
ATH 32ATH 32
(Um=36kV)(Um=36kV)
- ATH 3O up to 2 cores.- ATH 3O up to 2 cores.*
StandardStandard
1-51-5
2,5 x lth2,5 x lth
25OO25OO
E
114O114O
4747 8585
TYPESTYPES
3636
7O7O
17O17O
5O-6O5O-6O
5-25OO5-25OO
2x5 - 2x6OO2x5 - 2x6OO
ATH 3OATH 3O ATH 32ATH 32

(Um=36kV)(Um=36kV)
3737
TYPESTYPES
ATH 3OATH 3O
A B C D E F G H
35O 165
max.
465
max.
477
max.
34O
max.
4O3
3OO 27O 2OO 65
ATH 32ATH 32 39O 19O 35O 32O 25O 65

3838
Types: ATH 3O-NTypes: ATH 3O-N
ATH 32-NATH 32-N
(Um=36kV)(Um=36kV)
- ATH 3O-N up to 2 cores.- ATH 3O-N up to 2 cores.*
- ATH 32-N up to 3 cores.- ATH 32-N up to 3 cores.*
StandardStandard
1-51-5
2,5 x lth2,5 x lth
25OO25OO
E
114O114O
4747 8585
TYPESTYPES
3636
7O7O
17O17O
5O-6O5O-6O
5-25OO5-25OO
2x5 - 2x6OO2x5 - 2x6OO
ATH 3O-NATH 3O-N ATH 32-NATH 32-N

OUTDOOR DRY TYPE CAST RESIN INSULATED C.T.’S TECHNICAL DRAWINGOUTDOOR DRY TYPE CAST RESIN INSULATED C.T.’S TECHNICAL DRAWING
(Um=36kV)(Um=36kV)
3939
TYPESTYPES
ATH 3O-NATH 3O-N
A B C D E F G H
35O 165
max.
465
max.
474
max.
34O
max.
4OO
3OO 27O 2OO 65
ATH 32-NATH 32-N 39O 173 35O 32O 25O 65
M12 (PrimaryM12 (Primary TerminalTerminal) 6O 7O

4040
Types: ATH 52Types: ATH 52
(Um=52kV)(Um=52kV)
StandardStandard
1-51-5
2,5 x lth2,5 x lth
25OO25OO
E
16OO16OO
14O14O
TYPESTYPES
5252
9595
25O25O
5O-6O5O-6O
5-25OO5-25OO
2x5 - 2x6OO2x5 - 2x6OO
ATH 52ATH 52

(Um=52kV )(Um=52kV )
4141

Types: KAPTypes: KAP
INDOOR KAP TYPE (CABLE TYPE) CAST RESIN INSULATEDINDOOR KAP TYPE (CABLE TYPE) CAST RESIN INSULATED
ANDAND
ENCLOSED BY PLASTIC COVERENCLOSED BY PLASTIC COVER
(Um=O,72kV)
- Width 35- Width 35, 55mm up to 1 core.55mm up to 1 core.*
- Width 95- Width 95, 115mm up to 2 cores.115mm up to 2 cores.*
* For more cores, please contact with ESITAS for feasibility.For more cores, please contact with ESITAS for feasibility.
)
4444
1-51-5
5P- 1OP; Acc. to IEC 6OO44-15P- 1OP; Acc. to IEC 6OO44-1
max. 1OOmax. 1OO
Practically unlimitedPractically unlimited
E
-25............+4O-25............+4O****
1OOO1OOO
TYPESTYPES
StandardStandard
Primary rated currentPrimary rated current (A)(A)
O,72O,72
3
-
5O-6O5O-6O
4O ........... 3OOO4O ........... 3OOO
KAPKAP

* All dimensions are in mm.All dimensions are in mm.
INDOOR KAP TYPE (CABLE TYPE) CAST RESIN INSULATED AND ENCLOSED BY PLASTIC COVERINDOOR KAP TYPE (CABLE TYPE) CAST RESIN INSULATED AND ENCLOSED BY PLASTIC COVER
C.T.’S TECHNICAL DRAWINGC.T.’S TECHNICAL DRAWING (Um=O,72kV)(Um=O,72kV)
NONO TYPETYPE IDID ODOD H K O A B C
1 KAP-4OKAP-4O/19O-3519O-35 4O4O 19O19O 241241 3535 119119 15O15O 13O13O -
2 KAP-4OKAP-4O/19O-5519O-55 4O4O 19O19O 241241 5555 119119 15O15O 13O13O 2525
3 KAP-4OKAP-4O/19O-9519O-95 4O4O 19O19O 241241 9595 119119 15O15O 13O13O 4O4O
1O1O KAP-8OKAP-8O/19O-5519O-55 8O8O 19O19O 241241 5555 119119 15O15O 13O13O 2525
2O2O KAP-6OKAP-6O/21O-11521O-115 6O6O 21O21O 261261 115115 129129 17O17O 15O15O 4O4O
2525 KAP-4OKAP-4O/25O-3525O-35 4O4O 25O25O 3O13O1 3535 149149 15O15O 13O13O -
2626 KAP-4OKAP-4O/25O-5525O-55 4O4O 25O25O 3O13O1 5555 149149 15O15O 13O13O 2525
2727 KAP-4OKAP-4O/25O-9525O-95 4O4O 25O25O 3O13O1 9595 149149 15O15O 13O13O 4O4O
3O3O KAP-6OKAP-6O/25O-5525O-55 6O6O 25O25O 3O13O1 5555 149149 15O15O 13O13O 2525
3737 KAP-1OOKAP-1OO/25O-3525O-35 1OO1OO 25O25O 3O13O1 3535 149149 15O15O 13O13O -
3838 KAP-1OOKAP-1OO/25O-5525O-55 1OO1OO 25O25O 3O13O1 5555 149149 15O15O 13O13O 2525
3939 KAP-1OOKAP-1OO/25O-9525O-95 1OO1OO 25O25O 3O13O1 9595 149149 15O15O 13O13O 4O4O
4O4O
=
KAP-1OOKAP-1OO/25O-11525O-115 1OO1OO 25O25O 3O13O1 115115 149149 17O17O 15O15O 4O4O
4747 KAP-1OOKAP-1OO/19O-5519O-55 1OO1OO 19O19O 241241 5555 119119 15O15O 13O13O 2525
4848 KAP-1OOKAP-1OO/19O-9519O-95 1OO1OO 19O19O 241241 9595 119119 15O15O 13O13O 4O4O
KAP TYPES (DIMENSIONS)KAP TYPES (DIMENSIONS)*
KAP TYPE ( With Horizontal Mounted Plates)KAP TYPE ( With Horizontal Mounted Plates)
CURRENT TRANSFORMERCURRENT TRANSFORMER
As can be seen In the below tables there are various dimensions ofAs can be seen In the below tables there are various dimensions of
KAP Types. Please contact with ESiTAS for feasibility of required transformer'sKAP Types. Please contact with ESiTAS for feasibility of required transformer's
which have different ratiowhich have different ratio, classclass, burden and dimensions.burden and dimensions.
! Attention : Transformers which have 35mm height ( K)Attention : Transformers which have 35mm height ( K),
there Is only one connection plate.there Is only one connection plate.
4545

INDOOR KAP TYPE (CABLE TYPE) CAST RESIN INSULATED AND ENCLOSED BY PLASTIC COVERINDOOR KAP TYPE (CABLE TYPE) CAST RESIN INSULATED AND ENCLOSED BY PLASTIC COVER
KAP TYPES (DIMENSIONS)KAP TYPES (DIMENSIONS)*
KAP TYPE ( With Vertical Mounted Plates)KAP TYPE ( With Vertical Mounted Plates)
CURRENT TRANSFORMERCURRENT TRANSFORMER
As can be seen In the below tables there are various dimensions ofAs can be seen In the below tables there are various dimensions of
KAP Types. Please contact with ESiTAS for feasibility of required transformer'sKAP Types. Please contact with ESiTAS for feasibility of required transformer's
which have different ratio, class, burden and dimensions.which have different ratio, class, burden and dimensions.
4646
1O1O KAP-8OKAP-8O/19O-5519O-55 8O8O 19O19O 241241 5555 119119 15O15O 13O13O 2525
2O2O KAP-6OKAP-6O/21O-11521O-115 6O6O 21O21O 261261 115115 129129 17O17O 15O15O 4O4O
3838 KAP-1OOKAP-1OO/25O-5525O-55 1OO1OO 25O25O 3O13O1 5555 149149 15O15O 13O13O 2525
4O4O
=
KAP-1OOKAP-1OO/25O-11525O-115 1OO1OO 25O25O 3O13O1 115115 149149 17O17O 15O15O 4O4O
4747 KAP-1OOKAP-1OO/19O-5519O-55 1OO1OO 19O19O 241241 5555 119119 15O15O 13O13O 2525

- Inside Diameters: 8O- Inside Diameters: 8O / 1OO1OO / 12O12O
Types: A-KAPTypes: A-KAP
INDOOR A-KAP TYPE (SPLIT TYPE) CAST RESIN INSULATEDINDOOR A-KAP TYPE (SPLIT TYPE) CAST RESIN INSULATED
ANDAND
ENCLOSED BY PLASTIC COVERENCLOSED BY PLASTIC COVER
(Um=O,72kV)(Um=O,72kV)
* It can be produced according to customer’s specified ambient temperature. Please contact with ESITAS for feasibility.It can be produced according to customer’s specified ambient temperature. Please contact with ESITAS for feasibility. 4747
1-51-5
5P- 1OP; Acc. to IEC 6OO44-15P- 1OP; Acc. to IEC 6OO44-1
max. 1OOmax. 1OO
Practically unlimitedPractically unlimited
E
-25............+4O-25............+4O*
1OOO1OOO
TYPESTYPES
StandardStandard
Primary rated currentPrimary rated current (A)(A)
O,72O,72
3
-
5O-6O5O-6O
5O ........... 2OOO5O ........... 2OOO
A-KAPA-KAP

INDOOR A-KAP TYPE (SPLIT TYPE) CAST RESIN INSULATED AND ENCLOSED BY PLASTIC COVERINDOOR A-KAP TYPE (SPLIT TYPE) CAST RESIN INSULATED AND ENCLOSED BY PLASTIC COVER
NONO A
1 8O8O
1OO1OO
12O12O
2
3
4848

4949
RING TYPE CURRENT TRANSFORMERSRING TYPE CURRENT TRANSFORMERS
(Um=O,72kV)(Um=O,72kV)
INDOOR RING TYPESINDOOR RING TYPES
BUSHING TYPESBUSHING TYPES
OUTDOOR RING TYPESOUTDOOR RING TYPES
- Cable type.- Cable type.
- Insulated by cast resin.- Insulated by cast resin.
- Applicable for measurement and protection purposes.- Applicable for measurement and protection purposes.
- For power transformers.- For power transformers.
- Suitable for operation under oil continuous 13O- Suitable for operation under oil continuous 13O˚C.C.
- Insulated by Insulation paper or Polyester tape.- Insulated by Insulation paper or Polyester tape.
- Applicable for measurement and protection purposes.- Applicable for measurement and protection purposes.
- Dimensions : According to the customer requirements.Dimensions : According to the customer requirements.
- Standards : According to the customer requirements.Standards : According to the customer requirements.
- Please contact with ESITAS for feasibility of required transformer's which have different ratio, class, burden and dimensions.Please contact with ESITAS for feasibility of required transformer's which have different ratio, class, burden and dimensions.

5050
Types: LPCT-115Types: LPCT-115
INDOOR TYPE LPCTINDOOR TYPE LPCT
(Low Power Current Transformer) (Cable Type)(Low Power Current Transformer) (Cable Type)
(Um=O, 72kV)(Um=O, 72kV)
- LPCT-115 is defining low power current transformer with- LPCT-115 is defining low power current transformer with
voltage output in compliance with IEC 6OO44-8.voltage output in compliance with IEC 6OO44-8.
- It is designed for measuring nominal currents of 5A to- It is designed for measuring nominal currents of 5A to
125O A with ratio 1OOA125O A with ratio 1OOA / 22,5mV. Thus it should be used with a22,5mV. Thus it should be used with a
digital relay which have 1OOAdigital relay which have 1OOA // 22,5mV input with LPCT.22,5mV input with LPCT.
- Esitas LPCT Set is composed of three LPCT and one digital- Esitas LPCT Set is composed of three LPCT and one digital
relay. In case of preffered set without relay, Esitas has to berelay. In case of preffered set without relay, Esitas has to be
informed about the relay that will be usedinformed about the relay that will be used,
- The sensor is delivered with cable which is between 5m - 8m- The sensor is delivered with cable which is between 5m - 8m
upon customer request.upon customer request.
Advantages :Advantages :
-Same transformer is usable for nominal currents of 5A to 125OA.-Same transformer is usable for nominal currents of 5A to 125OA.
- Accurracy warranty throughout the range :- Accurracy warranty throughout the range :
•• Protection : 5A-4OkA ; class 5PProtection : 5A-4OkA ; class 5P
•• Measuring: 1OOA-125OA; class O,5 (class O,75 for 2OA, class 1,5 for 5A).Measuring: 1OOA-125OA; class O,5 (class O,75 for 2OA, class 1,5 for 5A).
Simple Assembly :Simple Assembly :
- Ready for connection secondary cables.- Ready for connection secondary cables.
- Simple connection with insulated cable for all types cubicles.- Simple connection with insulated cable for all types cubicles.
Safety Operation :Safety Operation :
- Openable secondary circuit under load.- Openable secondary circuit under load.
cable between 5m - 8mcable between 5m - 8m
Class of protectionClass of protection
Class of measuringClass of measuring
Accuracy limit factor (Kalf)Accuracy limit factor (Kalf)
Rated short - time current (kARated short - time current (kA / 1s)1s)
Insulation level (kV)Insulation level (kV)
Frequency (Hz)Frequency (Hz)
5P5P
15O15O
4O4O
O,72O,72 / 33 / --
5O - 6O5O - 6O
2
TYPESTYPES
StandardStandard
Minimum primary curent (A)Minimum primary curent (A)
Rated primary current (A)Rated primary current (A)
Rated secondary voltage (mV)Rated secondary voltage (mV)
Rated maximum primary current (A)Rated maximum primary current (A)
IEC 6OO44-8IEC 6OO44-8
5
1OO1OO
22,522,5
125O125O
O,5 (1OOA - 125OA), O,75 (2OA), 1,5 (5A)O,5 (1OOA - 125OA), O,75 (2OA), 1,5 (5A)
LPCT - 115LPCT - 115

5151
Types: LPCT-16OTypes: LPCT-16O
INDOOR TYPE LPCTINDOOR TYPE LPCT
(Low Power Current Transformer) (Cable Type)(Low Power Current Transformer) (Cable Type)
(Um=O, 72kV)(Um=O, 72kV)
- LPCT-16O is defining low power current transformer with- LPCT-16O is defining low power current transformer with
voltage output in compliance with IEC 6OO44-8.voltage output in compliance with IEC 6OO44-8.
- It is designed for measuring nominal currents of 5A to- It is designed for measuring nominal currents of 5A to
2OOO A with ratio 1OOA2OOO A with ratio 1OOA / 22,5mV. Thus it should be used with a22,5mV. Thus it should be used with a
digital relay which have 1OOAdigital relay which have 1OOA // 22,5mV input with LPCT.22,5mV input with LPCT.
- Esitas LPCT Set is composed of three LPCT and one digital- Esitas LPCT Set is composed of three LPCT and one digital
relay. In case of preffered set without relay, Esitas has to berelay. In case of preffered set without relay, Esitas has to be
informed about the relay that will be usedinformed about the relay that will be used,
- The sensor is delivered with cable which is between 5m - 8m- The sensor is delivered with cable which is between 5m - 8m
Advantages :Advantages :
-Same transformer is usable for nominal currents of 5A to 2OOOA.-Same transformer is usable for nominal currents of 5A to 2OOOA.
- Accurracy warranty throughout the range :- Accurracy warranty throughout the range :
•• Protection : 5A-4OkA ; class 5PProtection : 5A-4OkA ; class 5P
•• Measuring: 1OOA-2OOOA; class O,5 (class O,75 for 2OA, class 1,5 for 5A).Measuring: 1OOA-2OOOA; class O,5 (class O,75 for 2OA, class 1,5 for 5A).
Simple Assembly :Simple Assembly :
- Ready for connection secondary cables.- Ready for connection secondary cables.
- Simple connection with insulated cable for all types cubicles.- Simple connection with insulated cable for all types cubicles.
Safety Operation :Safety Operation :
- Openable secondary circuit under load.- Openable secondary circuit under load. cable between 5m - 8mcable between 5m - 8m
Class of protectionClass of protection
Class of measuringClass of measuring
Accuracy limit factor (Kalf)Accuracy limit factor (Kalf)
Rated short - time current (kARated short - time current (kA / 1s)1s)
Insulation level (kV)Insulation level (kV)
Frequency (Hz)Frequency (Hz)
Burden (Rbr)Burden (Rbr)
5P5P
4OO4OO
4O4O
O,72O,72 / 33 / --
5O - 6O5O - 6O
2
TYPESTYPES
StandardStandard
Minimum primary curent (A)Minimum primary curent (A)
Rated primary current (A)Rated primary current (A)
Rated secondary voltage (mV)Rated secondary voltage (mV)
Rated maximum primary current (A)Rated maximum primary current (A)
IEC 6OO44-8IEC 6OO44-8
5
1OO1OO
22,522,5
2OOO2OOO
O,5 (1OOA - 2OOOA), O,75 (2OA), 1,5 (5A)O,5 (1OOA - 2OOOA), O,75 (2OA), 1,5 (5A)
LPCT - 16OLPCT - 16O

VOLTAGE TRANSFORMERSVOLTAGE TRANSFORMERS
Voltage TransformersVoltage Transformers
An instrument transformer in which the secondary voltage, in normal conditions of use, is substantially proportional to the primaryAn instrument transformer in which the secondary voltage, in normal conditions of use, is substantially proportional to the primary
voltage and differs in phase from it by an angle which is approximately zero for an appropriate direction of thevoltage and differs in phase from it by an angle which is approximately zero for an appropriate direction of the connections.connections.
It isolates the primary side rated voltage from the connected instruments and protection circuits and convert the primaryIt isolates the primary side rated voltage from the connected instruments and protection circuits and convert the primary
voltage into a measurable secondary voltage, which is true in magnitude and phase.voltage into a measurable secondary voltage, which is true in magnitude and phase.
Primary WindingPrimary Winding
The winding to which the voltage to be transformed is applied.The winding to which the voltage to be transformed is applied.
Secondary WindingSecondary Winding
The winding, which supplies the voltage circuits of measuring instruments, meters, relays or similar apparatus.The winding, which supplies the voltage circuits of measuring instruments, meters, relays or similar apparatus.
Rated Primary VoltageRated Primary Voltage
The value of the primary voltage, which appears in the designation of the transformer and on which its performance is based.The value of the primary voltage, which appears in the designation of the transformer and on which its performance is based.
Rated Secondary VoltageRated Secondary Voltage
The value of the secondary voltage, which appears in the designation of the transformer and on which its performanceThe value of the secondary voltage, which appears in the designation of the transformer and on which its performance isis based.based.
Rated Transformation RatioRated Transformation Ratio
The ratio of the rated primary to the rated secondary voltage.The ratio of the rated primary to the rated secondary voltage.
Voltage Error (Ratio Error)Voltage Error (Ratio Error)
The error which a transformer introduces into the measurement of a voltage and which arises when the actual transformationThe error which a transformer introduces into the measurement of a voltage and which arises when the actual transformation
ratio is not equal to the transformation ratio.ratio is not equal to the transformation ratio.
The voltage error, expressed in per cent, is given by the formula:The voltage error, expressed in per cent, is given by the formula:
Voltage ErrorVoltage Error % =
WhereWhere
Kn is the rated transformation ratio;Kn is the rated transformation ratio;
Up is the actual primary voltage;Up is the actual primary voltage;
Us is the actual secondary voltage when Up is applied under the conditions of measurement.Us is the actual secondary voltage when Up is applied under the conditions of measurement.
Accuracy ClassAccuracy Class
A designation assigned to a voltage transformer, the errors of which remain within specified limits under prescribed conditions of use.A designation assigned to a voltage transformer, the errors of which remain within specified limits under prescribed conditions of use.
BurdenBurden
The admittance of the secondary circuit expressed in siemens and power factor (lagging or leading)The admittance of the secondary circuit expressed in siemens and power factor (lagging or leading)
Rated BurdenRated Burden
The value of the burden on which the accuracy requirements are based on.The value of the burden on which the accuracy requirements are based on.
Rated OutputRated Output
The value of apparent power (in voltamperes at a specified power - factor), which the transformer is intended to supply to theThe value of apparent power (in voltamperes at a specified power - factor), which the transformer is intended to supply to the
secondary circuit at the rated secondary voltage and with rated burden, connected to it.secondary circuit at the rated secondary voltage and with rated burden, connected to it.
Rated Insulation LevelRated Insulation Level
The combination of voltage values which characterizes the isolation of a transformer with regard to its capability to withstandThe combination of voltage values which characterizes the isolation of a transformer with regard to its capability to withstand
dielectric stresses.dielectric stresses.
Rated Voltage FactorRated Voltage Factor
The multiplying factor to be applied to the rated primary voltage to determine the maximum voltage at which a transformer mustThe multiplying factor to be applied to the rated primary voltage to determine the maximum voltage at which a transformer must
comply with the relevant thermal requirements for a specified time and with the relevant accuracy requirements.comply with the relevant thermal requirements for a specified time and with the relevant accuracy requirements.
Kn Us - UpKn Us - Up
UpUp
x1OOx1OO
5454

CONNECTION DIAGRAMSCONNECTION DIAGRAMS
a n a n dada dndn
Single Pole insulatedSingle Pole insulated
voltage transformervoltage transformer
with an open delta windingwith an open delta winding
(e.g. 11OOO(e.g. 11OOO/√/√3: 1OO3: 1OO/√/√3V - 1OO3V - 1OO/3V)3V)
Double pole insulatedDouble pole insulated
(e.g. 11OOO: 1OOV)(e.g. 11OOO: 1OOV)
It can be required for multi secondary winding and changeable ratios.It can be required for multi secondary winding and changeable ratios.
A A NN
Single Pole insulatedSingle Pole insulated
(e.g. 11OOO(e.g. 11OOO/√/√3: 1OO3: 1OO/√/√3V)3V)
V-Connection of Two Double Pole Insulated Voltage TransformersV-Connection of Two Double Pole Insulated Voltage Transformers
Safety Operation Conditions for Voltage TransformersSafety Operation Conditions for Voltage Transformers
-When the Secondary terminals are connected to the measuring or protection devices, one of the terminals should be earthed for-When the Secondary terminals are connected to the measuring or protection devices, one of the terminals should be earthed for
safety as seen in Diagram-1.safety as seen in Diagram-1.
a b
a b
A B A B
a b
A B
R S T
sr t
A B
a
b
V
5555
Diagram-1Diagram-1

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