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Current transformers are instrument transformers that isolate measurement devices from high voltage circuits. They proportionally reduce the primary current to the secondary current while maintaining phase. Current transformers have rated values for current, burden, insulation level, frequency and thermal limits. Accuracy is classified according to standards and errors must remain within specified limits under prescribed conditions.

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0% found this document useful (0 votes)

282 views106 pages

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PRODUCT CATALOGUE

www.esitas.com
Company Profile Page 2

M.V. Current Transformers Page 5

Technical Information About Current Transformers Page 6

ATB 1O-B Page 1O
ATB 1O-BS / ATB 2O-BS Page 12
ATB 1O-1O / ATB 1O-15 Page 14
ATB 2O-B Page 16
ATB 2O-3A / ATB 2O-3B Page 18
ATB
AT B 2O-1O / ATB 2O-15 Page 2O
ATB 3O-S Page 22
ATB 3O-4 / ATB 3O-5 / ATB 3O-1O Page 24
ATU 24 Page 26
ES24 C3-B Page 28
ATD 1O / 2O Page 3O
ATN 17 / ESO 17C / ATN 24 Page 32
ATH 2O / 21 / 22 Page 34
ATH 3O / 32 Page 36
ATH 3O-N / 32-N Page 38
ATH 52 Page 4O

L.V Current Transformers Page 43

KAP Type Page 44
A-Kap Type (Split Type) Page 47
Indoor & Outdoor Ring Type Page 49
LPCT 115 Page 5O
LPCT 16O Page 51
CONTENTS Voltage Transformers Page 53

Technical Information About Voltage Transformers Page 54

VTB 1O-S / VTB 1O-K / VTB 2O / VTB 2O-K Page 58
VTB 3O-K Page 6O
VT 2O-B / VTB 3O Page 62
2 VTB 1O / 2 VTB 2O Page 64
2 VT 2O-B / 2 VTB 3O
3O / 2 VT 4O-2OO Page 66
VTB 1O-KF / VTB 2O-KF / VTB 3O-KF Page 68
ES 12 VR-F / ES 24 V2-F Page 7O
VTB 1O-SF / VTB 1O-EF/
1O-EF VTB 2O-F Page 72
VTB 3O-F Page 74
ES 17 V3 Page 76
ES 24 V2-B Page 78
ES 24 V1 Page 8O
VTU 24 Page 82
VTH 2O / VTH 3O Page 84
VTH 2O-N / VTH 3O-N Page 86
2VTH 2O / 2VTH 3O Page 88
2VTH 2O-N / 2VTH 3O-N Page 9O

Insulators Page 93

Technical Information About Insulators Page 94

Special Products Page 1OO

COMPANY PROFILE

GENERAL INFORMATION ABOUT ESITAS GROUP COMPANIES

Mission Statement
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 position
in 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-
ons in order to increase efficiency for ourselves and our customers.

Group Companies:
Esitas 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 two
factories specializing in their markets.

ESITAS ELEKTRIK is the parent company of the group located in Istanbul, Turkey produces
and sells Low and Medium Voltage Instrument Transformers (both Current - Voltage and Indoor-
Outdoor Types), Low and Medium Voltage Insulators and LPCTs.
ESITAS 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 the
industry like ABB, Schneider, Siemens and others.

2
www.esitas.com

PT ESITAS PACIFIC is the Groups 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 Insulators. Indonesia founded to serve the customers more conveniently
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 innovations
in order to increase efficiency for ourselves and our customers, Esitas is your partner in the world
transformer market.

3
CURRENT TRANSFORMERS

General Definitions
General definitions have been given according to International Standarts IEC 6OO44
6OO44.

Instrument Transformer
A transformer intended to supply measuring instruments meters, protection relays and other similiar apparatus.

Applicable Standards
Our transformers comply with applicable national and international standards.

Current Transformers
An instrument transformer in which the secondary current, in normal conditions of useuse, is 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.
It 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 of
different characteristics completely isolated from each other.

Measuring Current Transformer

A current transformer intended to supply indicating instruments, integrating meters and similiar apparatus.

Protective Current Transformer

A current transformer intended to supply protective relays.

Primary Winding
The winding through which flows the current to be transformed.

Secondary Winding
The winding, which supplies the current circuits of measuring instruments, meters, relays or similiar devices.

Secondary Circuit
The external circuit supplied by the secondary winding of a transformer.

Rated Primary Current

The value of the primary current on which the performance of the transformer is based.

Rated Secondary Current

The value of the secondary current on which the performance of the transformer is based.

Rated Transformation Ratio

The ratio of rated primary current to the rated secondary current (I1N
(I1N/I2N-i.e.
I2N-i.e. 1OO/5A)
1OO 5A)

Current Error (Ratio Error)

The 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.
The current error expressed in per cent is given by formula:
Current Error % (Kn Is - Ip)

Where
Kn is the rated transformation ratio;
Ip is the actual primary current
Is is the actual secondary current when Ip is flowing under the conditions of measurements.

6
www.esitas.com

Accuracy Class
A designation assigned to a current transformer errors of which remain within specified limits under prescribed conditions of use.

Burden
The 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.

Rated Burden
The value of the burden on which the accuracy requirements are based on.

Rated Output
The 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.

Rated Insulation Level

The combination of voltage values which characterizes the insulation of a transformer with regard to its capability to whitstand
dielectric stresses.

Rated Frequency
This is the frequency for which the transformer is designed and given in Hz on the rating plate.

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 effects
the secondary winding being short-circuited.

Rated Dynamic Current (ldyn)

The 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.

Rated Continuous Thermal Current

The 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.

7
CURRENT TRANSFORMERS

CONNECTION DIAGRAMS

Single Ratio Current Transformers

P1 P2 P1 P2

S1 S2 1S1 1S2 2S1 2S2 3S1 3S2

Single Core Multi Cores

Reconnection of Current Transformer

In case of changeable ratios, it is possible to design the transformer with primary reconnection or secondary tapping;

P1 C1 C2 P2
Primary Reconnection
Changeover will be done at the primary
side by using joint bars.
Can be used only for primary currents up to 2 x 6OOA

S1 S2

C1 -C2 short circuited: low rated current

P1 - C1 and P2 - C2 short circuited: high rated current

Secondary Tapping
Changeover will be done at the secondary side. P1 P2

S1 S2 S3

S1 -S2 low rated current

S1 - S3 high rated current

8
www.esitas.com

Safety Operation Conditions for Current Transformers

- When the secondary terminals are connected to the measuring or protection devices P1 P2
one of the terminals should be earthed for safety as seen in Diagram-1.

Diagram-1

S1 S2
A

- The secondary circuit of a current transformer must not be operated with an open - circuit. P1 P2
- The secondary winding of a current transformer which will not be used must
be short - circuited and earthed as seen in Diagram-2
Diagram-2

S1 S2

P1 P2
- For the transformer with reconnectable and - or tapped secondaries
unused terminals must be left open as seen in Diagram-3.
Diagram-3

S1 S2
S3 open
A

- 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.

M.V. CURRENT TRANSFORMERS CONNECTION CLEARENCES

a b

Insulation Level a minimum b minimum

12kV 1OOmm 11Omm
24kV 19Omm 21Omm
36kV 3O5mm 325mm

9
CURRENT TRANSFORMERS

INDOOR SUPPORT TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=3,6kV .............. 12kV BLOCK TYPES)

- Up to 3 cores
cores*
- On request with capacitive layer.
- On request with barrier.

Technical Data

TYPES ATB 1O-B ATB 1O-B2 ATB 1O-B3 ATB 1O-2

Operating voltage, Um (kV) 3,6 7,2 12
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28
4O 6O 75
Rated frequency (Hz) 5O-6O
(On request 3OOOA 1.Oxln / Cont. &
Primary rated current (A) 5 - 25OO Insulation class B )
Primary reconnection (A) 2 x 5 - 2 x 6OO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; CI:PX Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) max. 1OOO x In
Rated dynamic current (ldyn) (kA) 2,5 x lth
Short-time load (mechanical) (N) 5OOO
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O**
**
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 2O - 25 28 - 33 33 - 36 36

On request operating voltage of 17,5 kV is available.

* For more cores please contact with ESITAS for feasibility.
10 ** It can be produced according to customer's specified ambient temperature.Please contact with ESiTAS for feasibility.
www.esitas.com

INDOOR SUPPORT TYPE CAST RESIN INSULATED C.T.S TECHNICAL DRAWING

(Um=3,6kV .............. 12kV BLOCK TYPES)

TYPES A B C D E F G H TIGHTENING TORQUE (Nm) min. max.

ATB 1O-B 355 155 22O 148 29O 125 27O 2O M5 (Secondary Terminal) 2.5 3.5
ATB 1O-B2 395 195 22O 148 33O 125 31O 2O M8 (Ground Terminal) 15 2O
ATB 1O-B3 455 255 22O 148 39O 125 37O 2O M12 (Primary Terminal) 6O 7O
ATB 1O-2 355 155 22O 175 29O 15O 27O 2O

- All dimensions are in mm.

- 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.
- Customer designed products are also available. 11
CURRENT TRANSFORMERS

INDOOR SUPPORT TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=3,6kV ...... 12kV, 17,5 ...... 24kV NEW BLOCK TYPES)

- Up to 3 cores
cores*
- On request with capacitive layer.
- On request with barrier.

Technical Data

TYPES ATB 1O-BS ATB 2O-BS

Operating voltage, Um (kV) 3,6 7,2 12 ** 17,5 24
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38 5O
4O 6O 75 95 125
Rated frequency (Hz) 5O-6O
(On request 3OOOA 1.Oxln / Cont. &
Primary rated current (A) 5 - 25OO Insulation class B )
Primary reconnection (A) 2 x 5 - 2 x 6OO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; CI:PX Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) max. 1OOO x In
Rated dynamic current (ldyn) (kA) 2,5 x lth
Short-time load (mechanical) (N) 5OOO
Insulation class E
Ambient temperature (C) -25 ........... +4O***
+4O ***
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 2O - 25 3O

* For more cores please contact with ESITAS for feasibility.

** On request ATB 1O-BS operating voltage of 17,5kV is available.
12 *** It can be produced according to customer's specified ambient temperature.Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SUPPORT TYPE CAST RESIN INSULATED C.T.S TECHNICAL DRAWING

(Um=3,6kV ...... 12kV, 17,5 ...... 24kV NEW BLOCK TYPES)

8Omm will be
7Omm at
ATB1O-BS

TYPES A B C D E F G H I J TIGHTENING TORQUE (Nm) min. max.

ATB 1O-BS 355 155 22O 148 299 135 - 125 27O 2O M5 (Secondary Terminal) 2.5 3.5
ATB 2O-BS 355 155 28O 178 3OO 135 34O 15O 28O 2O M8 (Ground Terminal) 15 2O
M12 (Primary Terminal) 6O 7O

- All dimensions are in mm.

INDOOR SUPPORT TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=3,6kV .............. 12kV NARROW BLOCK TYPES)

Types: ATB 1O-1O

ATB 1O-15

- ATB 1O-1O up to 1 core *

- ATB 1O-15 up to 2 cores. *
- On request with capacitive layer.
- On request with barrier.

Technical Data

TYPES ATB 1O-1O ATB 1O-15

Operating voltage, Um (kV) 3,6 7,2 12
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28
4O 6O 75
Rated frequency (Hz) 5O-6O
Primary rated current (A) 5-up to 125O
Primary reconnection (A) 2x5- 2x6OO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; CI:PX Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) (max. 2OO x In)**
In) **
Rated dynamic current (ldyn) (kA) 2,5 x lth
Short-time load (mechanical) (N) 5OOO
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O***
***
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 12 17

On request operating voltage of 17,5 kV is available.

* For more cores please contact with ESITAS for feasibility.
** May vary according to requested primary current and core values.
14 *** It can be produced according to customer's specified ambient temperature. Please contact with ESiTAS for feasibility.
www.esitas.com

INDOOR SUPPORT TYPE CAST RESIN INSULATED C.T.S C.T. S TECHNICAL DRAWING
(Um=3,6kV .............. 12kV NARROW BLOCK TYPES)

TYPES A B C D E F G TIGHTENING TORQUE (Nm) min. max.

ATB 1O-1O 33O 155 22O 148 125 27O 2O M5 (Secondary Terminal) 2.5 3.5
ATB 1O-15 33O 155 22O 148 125 27O 2O M8 (Ground Terminal) 15 2O
M12 (Primary Terminal) 6O 7O

- All dimensions are in mm.

INDOOR SUPPORT TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=17,5kV .............. 24kV BLOCK TYPES)

- Up to 3 cores.
cores.*
- On request with capacitive layer.
- On request with barrier.

Technical Data

TYPES ATB 2O-B ATB 2O-B2 ATB 2O-B4 ATB 2O-3 ATB 2O-3B ATB 2O-3K

Operating voltage, Um (kV) 17.5 24

Rated power-frequency withstand voltage (1 minute) (kV) 38 5O
95 125
Rated frequency (Hz) 5O-6O
Primary rated current (A) 5 - 25OO (On request 3OOOA 1.Oxln / Cont. &
Insulation class B )
Primary reconnection (A) 2 x 5 - 2 x 6OO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; CI:PX Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) max. 1OOO x In
Rated dynamic current (ldyn) (kA) 2,5 x lth
Short-time load (mechanical) (N) 5OOO
Insulation class E
Ambient temperature (C) -25 ........... +4O**
+4O **
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 3O 42 44 44 55 7O

* For more cores please contact with ESITAS for feasibility.

16 ** It can be produced according to customer's specified ambient temperature.Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SUPPORT TYPE CAST RESIN INSULATED C.T.S TECHNICAL DRAWING

(Um=17,5kV .............. 24kV BLOCK TYPES)

TYPES A B C D E F G H I TIGHTENING TORQUE (Nm) min. max.

ATB 2O-B 355 155 28O 178 29O 145 15O 28O 2O M5 (Secondary Terminal) 2.5 3.5
ATB 2O-B2 355 155 28O 2O5 29O 145 18O 28O 17 M8 (Ground Terminal) 15 2O
ATB 2O-B4 355 155 28O 218 29O 145 19O 28O 17 M12 (Primary Terminal) 6O 7O
ATB 2O-3 455 197 28O 178 39O 195 15O 375 22
ATB 2O-3B 455 197 28O 2O5 39O 195 18O 375 22
ATB 2O-3K 455 197 28O 218 39O 195 19O 375 22

- All dimensions are in mm.

INDOOR SUPPORT TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=17,5kV .............. 24kV NEW BLOCK TYPES)

Types: ATB 2O-3A

ATB 2O-3B

- Up to 3 cores.
cores.*
- On request with capacitive layer.
- On request with barrier.

Technical Data

TYPES ATB 2O-3A ATB 2O-3B

Operating voltage, Um (kV) 17.5 24
Rated power-frequency withstand voltage (1 minute) (kV) 38 5O
95 125
Rated frequency (Hz) 5O-6O
Primary rated current (A) 5 - 25OO (On request 3OOOA 1.Oxln / Cont. &
Insulation class B )
Primary reconnection (A) 2 x 5 - 2 x 6OO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; CI:PX Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) max. 1OOO x In
Rated dynamic current (ldyn) (kA) 2,5 x lth
Short-time load (mechanical) (N) 5OOO
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O**
**
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 44 55

* For more cores please contact with ESITAS for feasibility.

18 ** It can be produced according to customer's specified ambient temperature.Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SUPPORT TYPE CAST RESIN INSULATED C.T.S TECHNICAL DRAWING

(Um=17,5kV .............. 24kV NEW BLOCK TYPES)

TYPES A B C D E F G H TIGHTENING TORQUE (Nm) min. max.

ATB 2O-3A 455 28O 178 39O 14O 15O 375 2O M5 (Secondary Terminal) 2.5 3.5
ATB 2O-3B 455 28O 2O5 39O 14O 18O 375 2O M8 (Ground Terminal) 15 2O
M12 (Primary Terminal) 6O 7O

- All dimensions are in mm.

INDOOR SUPPORT TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=17,5kV .............. 24kV NARROW BLOCK TYPES)

Types: ATB 2O-1O

ATB 2O-15

- ATB 2O-1O up to 1 core

core*
- ATB 2O-15 up to 2 cores.
cores.*
- On request with capacitive layer.
- On request with barrier.

Technical Data

TYPES ATB 2O-1O ATB 2O-15

Operating voltage, Um (kV) 17.5 24
Rated power-frequency withstand voltage (1 minute) (kV) 38 5O
95 125
Rated frequency (Hz) 5O-6O
Primary rated current (A) 5 up to 125O
Primary reconnection (A) 2 x 5 - 2 x 6OO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; CI:PX Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) (max. 3OO x In)
In)**
**
Rated dynamic current (ldyn) (kA) 2,5 x lth
Short-time load (mechanical) (N) 5OOO
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O***
***
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 22 3O

* For more cores please contact with ESITAS for feasibility.

** May vary according to requested primary current and core values.
20 *** It can be produced according to customer's specified ambient temperature.Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SUPPORT TYPE CAST RESIN INSULATED C.T.S TECHNICAL DRAWING

(Um=17,5kV .............. 24kV NARROW BLOCK TYPES)

TYPES A B C D E F G TIGHTENING TORQUE (Nm) min. max.

ATB 2O-1O 335 155 28O 178 15O 28O 2O M5 (Secondary Terminal) 2.5 3.5
ATB 2O-15 335 155 28O 178 15O 28O 2O M8 (Ground Terminal) 15 2O
M12 (Primary Terminal) 6O 7O

- All dimensions are in mm.

INDOOR SUPPORT TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=36kV BLOCK TYPES)

- Up to 3 cores.
cores.*
- On request with capacitive layer.
- On request with barrier.

Technical Data

TYPES ATB 3O-S ATB 3O-S1 ATB 3O-1 ATB 3O-2 ATB 3O-3

Operating voltage, Um (kV) 36

Rated power-frequency withstand voltage (1 minute) (kV) 7O
17O
Rated frequency (Hz) 5O-6O
Primary rated current (A) 5 - 25OO (On request 3OOOA 1.Oxln / Cont. &
Insulation class B )
Primary reconnection (A) 2 x 5 - 2 x 6OO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; CI:PX Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) max. 1OOO x In
Rated dynamic current (ldyn) (kA) 2,5 x lth
Short-time load (mechanical) (N) 5OOO
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O**
**
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 35 37 4O 46 51

* For more cores please contact with ESITAS for feasibility.

22 ** It can be produced according to customer's specified ambient temperature.Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SUPPORT TYPE CAST RESIN INSULATED C.T.S TECHNICAL DRAWING

(Um=36kV BLOCK TYPES)

TYPES A B C D E F G H I J
ATB 3O-S 385 17O 36O 255 25O 125 21O 225 3OO 2O
ATB 3O-S1 385 17O 36O 255 27O 135 22O 225 3OO 2O TIGHTENING TORQUE (Nm) min. max.
ATB 3O-1 385 17O 36O 255 27O 135 22O 225 3OO 2O M5 (Secondary Terminal) 2.5 3.5
ATB 3O-2 385 17O 36O 255 31O 155 24O 225 3OO 2O M8 (Ground Terminal) 15 2O
ATB 3O-3 455 21O 36O 255 389 195 249 225 375 2O M12 (Primary Terminal) 6O 7O

- All dimensions are in mm.

INDOOR SUPPORT TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=36kV NARROW BLOCK TYPES)

- ATB 3O-4 , 3O-5 , 3O-1O up to 1 core.

core.*
- ATB 3O-15 up to 2 cores.
cores.**
- On request with capacitive layer.
- ATB 3O-1O & ATB 3O-15 with barrier on request.

Technical Data

TYPES ATB 3O-4 ATB 3O-5 ATB 3O-1O ATB 3O-15

Operating voltage, Um (kV) 36
Rated power-frequency withstand voltage (1 minute) (kV) 7O
17O
Rated frequency (Hz) 5O-6O
Primary rated current (A) 5 - up to 6OO 5 - up to 125O
Primary reconnection (A) 2x5 - 2x3OO 2x5 - 2x6OO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; CI:PX Acc. to IEC 6OO44-1
max. 3OOxIn**
3OOxIn max. 4OOxIn
4OOxIn** max. 8OOxIn
8OOxIn** max. 3OOxIn**
3OOxIn
Rated short-time thermal current (lth) (1s) (kA) (for 1 (for 1 (for 1 (for 2 cores)
measurement measurement measurement
core) core) core)

Rated dynamic current (ldyn) (kA) 2,5 x lth

Short-time load (mechanical) (N) 5OOO
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O***
***
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 2O 22 25 35

* For more cores please contact with ESITAS for feasibility.

** May vary according to requested primary current and core values.
24 *** It can be produced according to customer's specified ambient temperature.Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SUPPORT TYPE CAST RESIN INSULATED C.T.S TECHNICAL DRAWING

(Um=36kV NARROW BLOCK TYPES)

TYPES A B C D E F G H I J TIGHTENING TORQUE (Nm) min. max.

ATB 3O-4 385 17O 36O 255 2OO 1OO 18O 225 3OO 2O M5 (Secondary Terminal) 2.5 3.5
ATB 3O-5 385 17O 36O 255 25O 125 21O 225 3OO 2O M8 (Ground Terminal) 15 2O
ATB 3O-1O 385 17O 36O 255 25O 125 21O 225 3OO 2O M 12 (Primary Terminal) 6O 7O
ATB 3O-15 385 17O 36O 255 25O 125 21O 225 3OO 2O

- All dimensions are in mm.

INDOOR SUPPORT TYPE CAST RESIN INSULATED NARROW TYPE CURRENT TRANSFORMERS
(Um=7,2kV .......... 24kV BLOCK TYPES)

Types: ATU 24

- Up to 2 cores.

Technical Data

TYPES ATU 24
Operating voltage, Um (kV) 7,2 12 17,5 24
Rated power-frequency withstand voltage (1 minute) (kV) 2O 28 38 5O
6O 75 95 125
Rated frequency (Hz) 5O-6O
Primary rated current (A) 1O - up to 8OO
Primary reconnection (A) 2x1O - 2x4OO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) 1OO x In*
In
Rated dynamic current (ldyn) (kA) 2,5 x lth
Short-time load (mechanical) (N) 5OOO
Insulation class E
Ambient temperature (C) -25............+4O**
-25............+4O **
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 24

* May vary according to requested primary current and core values.

26 ** It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SUPPORT TYPE CAST RESIN INSULATED NARROW TYPE C.T.S

TECHNICAL DRAWING
(Um=7,2kV .......... 24kV BLOCK TYPES)

- All dimensions are in mm.

INDOOR SUPPORT TYPE CAST RESIN INSULATED SPECIAL TYPE

CURRENT TRANSFORMERS
(Um=7,2kV .......... 24kV BLOCK TYPES)
PES)

Types: ES24 C3-B

- Up to 2 cores.

Technical Data

TYPES ES24 C3-B

Operating voltage, Um (kV) 7,2 12 17,5 24
Rated power-frequency withstand voltage (1 minute) (kV) 2O 28 38 5O
6O 75 95 125
Rated frequency (Hz) 5O-6O
Primary rated current (A) 1O - up to 8OO
Primary reconnection (A) 2x1O - 2x4OO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P-1OP-PX Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) Up to 6OkA*
6OkA
Rated dynamic current (ldyn) (kA) 2,5 x lth
Short-time load (mechanical) (N) 5OOO
Insulation class E
Ambient temperature (C) -25............+4O**
-25............+4O **
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 25

* May vary according to requested primary current and core values.

28 ** It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SUPPORT TYPE CAST RESIN INSULATED SPECIAL TYPE C.T.S

TECHNICAL DRAWING
(Um=7,2kV .......... 24kV BLOCK TYPES)

- All dimensions are in mm.

INDOOR POST BUSBAR TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=3,6kV ....................24kV)

- Up to 2 cores.
cores.*

Technical Data

TYPES ATD 1O ATD 2O

Operating voltage, Um (kV) 3,6 7,2 12 17,5 24
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38 5O
4O 6O 75 95 125
Rated frequency (Hz) 5O-6O
Primary rated current (A) 8OO-3OOO 8OO-4OOO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; CI:PX Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) max. 1OO
Rated dynamic current (ldyn) (kA) Practically Unlimited
Short-time load (mechanical) (N) 3OOO
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O**
**
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 19 34

* For more cores please contact with ESITAS for feasibility.

30 ** It can be produced according to customer's specified ambient temperature.Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR POST BUSBAR TYPE CAST RESIN INSULATED C.T.S TECHNICAL DRAWING
(Um=3,6kV ..............24kV)

TYPES A B C D E F G H I TIGHTENING TORQUE (Nm) min. max.

ATD 1O 28O 1O2 342 214 215 235 158 155 23 M5 (Secondary Terminal) 2.5 3.5
ATD 2O 28O 1O2 427 26O 26O 295 158 155 23

- All dimensions are in mm.

- Tolerance is DIN 7168-g .
- 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. 31
CURRENT TRANSFORMERS

INDOOR POST BUSBAR TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=3,6kV............24kV)

- Up to 3 cores.
cores.*

Technical Data

TYPES ATN 17 ESO 17C ATN 24

Operating voltage, Um (kV) 3,6 7,2 12 17,5 17,5 24
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38 38 5O
4O 6O 75 95 95 125
Rated frequency (Hz) 5O-6O
Primary rated current (A) 8OO-4OOO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; CI:PX Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) max. 1OO
Rated dynamic current (ldyn) (kA) Practically Unlimited
Short-time load (mechanical) (N) 3OOO
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O**
**
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 35 4O 38

* For more cores please contact with ESITAS for feasibility.

32 ** It can be produced according to customer's specified ambient temperature.Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR POST BUSBAR TYPE CAST RESIN INSULATED C.T.S TECHNICAL DRAWING
(Um=3,6kV............24kV)

ATN 17 (width 15Omm ) ATN 17 (width 28Omm )

ATN 24 ESO 17C

TIGHTENING TORQUE (Nm) min. max.

M5 (Secondary Terminal) 2,5 3,5

- All dimensions are in mm.

- Tolerance is DIN 7168-g.
- 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. 33
CURRENT TRANSFORMERS

OUTDOOR DRY TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=3,6kV ....................24kV)

- ATH 2O up to 1 core.*
core.
cores.
- ATH 21 up to 2 cores.* For the connection
cores.
- ATH 22 up to 3 cores.* of aluminium conductors
steel reinforced

Technical Data

TYPES ATH 2O ATH 21 ATH 22

Operating voltage, Um (kV) 3,6 7,2 12 17,5 24
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38 5O
4O 6O 75 95 125
Rated frequency (Hz) 5O-6O
Primary rated current (A) 5-125O 5-25OO
Primary reconnection (A) 2x5 - 2x4OO 2x5 - 2x6OO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; CI:PX Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) max. 1OOO x In
Rated dynamic current (ldyn) (kA) 2,5 x lth
Short-time load (mechanical) (N) 24OO
Insulation class E
Min. creepage distance (mm) 56O 825 77O
Altitude (m) According to the customer requirements
Standard According to the customer requirements
Weight (approx.) (kg) 24 35 78

34 * For more cores please contact with ESITAS for feasibility.

www.esitas.com

OUTDOOR DRY TYPE CAST RESIN INSULATED C.T.S TECHNICAL DRAWING

(Um=3,6kV ....................24kV)

TYPES A B C D E F G H
max. max.
ATH 2O 245 1O5 35O 22O 225 178 175 2O TIGHTENING TORQUE (Nm) min. max.
max. max.
ATH 21 35O 165 37O 3OO 34O 27O 2OO 65 M6 (Secondary Terminal) 3 5
max. max.
ATH 22 4OO 195 38O 37O 415 34O 25O 7O M12 (Primary & Ground Terminal) 6O 7O

- All dimensions are in mm.

- 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. 35
CURRENT TRANSFORMERS

OUTDOOR DRY TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=36kV)

Types: ATH 3O
ATH 32

- ATH 3O up to 2 cores.*
cores.
cores.
- ATH 32 up to 3 cores.*
For the connection
of aluminium conductors
steel reinforced
Technical Data

TYPES ATH 3O ATH 32

Operating voltage, Um (kV) 36
Rated power-frequency withstand voltage (1 minute) (kV) 7O
17O
Rated frequency (Hz) 5O-6O
Primary rated current (A) 5-25OO
Primary reconnection (A) 2x5 - 2x6OO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; CI:PX Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) max. 1OOO x In
Rated dynamic current (ldyn) (kA) 2,5 x lth
Short-time load (mechanical) (N) 25OO
Insulation class E
Min. creepage distance (mm) 114O
Altitude (m) According to the customer requirements
Standard According to the customer requirements
Weight (approx.) (kg) 47 85

36 * For more cores please contact with ESITAS for feasibility.

www.esitas.com

OUTDOOR DRY TYPE CAST RESIN INSULATED C.T.S TECHNICAL DRAWING

(Um=36kV)

TYPES A B C D E F G H TIGHTENING TORQUE (Nm) min. max.

max. max.
ATH 3O 35O 165 465 3OO 34O 27O 2OO 65 M6 (Secondary Terminal) 3 5
max. max.
ATH 32 39O 19O 477 35O 4O3 32O 25O 65 M12 (Primary & Ground Terminal) 6O 7O

- All dimensions are in mm.

- 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. 37
CURRENT TRANSFORMERS

OUTDOOR DRY TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=36kV)

Types: ATH 3O-N

ATH 32-N

- ATH 3O-N up to 2 cores.*

cores.
- ATH 32-N up to 3 cores.*
cores. For the connection
of aluminium conductors
steel reinforced
Technical Data

TYPES ATH 3O-N ATH 32-N

38 * For more cores please contact with ESITAS for feasibility.

www.esitas.com

OUTDOOR DRY TYPE CAST RESIN INSULATED C.T.S TECHNICAL DRAWING

(Um=36kV)

TYPES A B C D E F G H TIGHTENING TORQUE (Nm) min. max.

max. max.
ATH 3O-N 35O 165 465 3OO 34O 27O 2OO 65 M6 (Secondary Terminal) 3 5
max. max.
ATH 32-N 39O 173 474 35O 4OO 32O 25O 65 M12 (Primary Terminal
Terminal) 6O 7O

- All dimensions are in mm.

- 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. 39
CURRENT TRANSFORMERS

OUTDOOR DRY TYPE CAST RESIN INSULATED CURRENT TRANSFORMERS

(Um=52kV)

Types: ATH 52

- Up to 2 cores.
cores.*

For the connection

of aluminium conductors
steel reinforced
Technical Data

TYPES ATH 52
Operating voltage, Um (kV) 52
Rated power-frequency withstand voltage (1 minute) (kV) 95
25O
Rated frequency (Hz) 5O-6O
Primary rated current (A) 5-25OO
Primary reconnection (A) 2x5 - 2x6OO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; CI:PX Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) max. 1OOO x In
Rated dynamic current (ldyn) (kA) 2,5 x lth
Short-time load (mechanical) (N) 25OO
Insulation class E
Min. creepage distance (mm) 16OO
Altitude (m) According to the customer requirements
Standard According to the customer requirements
Weight (approx.) (kg) 14O

40 * For more cores please contact with ESITAS for feasibility.

www.esitas.com

OUTDOOR DRY TYPE CAST RESIN INSULATED C.T.S TECHNICAL DRAWING

(Um=52kV )

TIGHTENING TORQUE (Nm) min. max.

M6 (Secondary Terminal) 3 5
M12 (Primary & Ground Terminal) 6O 7O

- All dimensions are in mm.

- 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. 41
CURRENT TRANSFORMERS

INDOOR KAP TYPE (CABLE TYPE) CAST RESIN INSULATED

AND
ENCLOSED BY PLASTIC COVER
CURRENT TRANSFORMERS
(Um=O,72kV))
Types: KAP

- Width 35 , 55mm up to 1 core.*

core.
- Width 95 , 115mm up to 2 cores.
cores.*

Technical Data

TYPES KAP
Operating voltage, Um (kV) O,72
Rated power-frequency withstand voltage (1 minute) (kV) 3
-
Rated frequency (Hz) 5O-6O
Primary rated current (A) 4O ........... 3OOO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) max. 1OO
Rated dynamic current (ldyn) (kA) Practically unlimited
Insulation class E
Ambient temperature (C) -25............+4O**
-25............+4O **
Altitude (m) 1OOO
Standard According to the customer requirements

* For more cores, please contact with ESITAS for feasibility.

44 ** It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR KAP TYPE (CABLE TYPE) CAST RESIN INSULATED AND ENCLOSED BY PLASTIC COVER
C.T.S TECHNICAL DRAWING (Um=O,72kV)

TIGHTENING TORQUE (Nm) min. max.

KAP TYPE ( With Horizontal Mounted Plates)
CURRENT TRANSFORMER M5 (Secondary Terminal) 2,5 3,5
As can be seen In the below tables there are various dimensions of
KAP Types. Please contact with ESiTAS for feasibility of required transformer's ! Attention : Transformers which have 35mm height ( K) ,
which have different ratio , class , burden and dimensions. there Is only one connection plate.

KAP TYPES (DIMENSIONS)*

(DIMENSIONS)
NO TYPE ID OD H K O A B C NO TYPE ID OD H K O A B C
1 KAP-4O/19O-35
KAP-4O 19O-35 4O 19O 241 35 119 15O 13O - 25 KAP-4O
KAP-4O/25O-35
25O-35 4O 25O 3O1 35 149 15O 13O -
2 KAP-4O/19O-55
KAP-4O 19O-55 4O 19O 241 55 119 15O 13O 25 26 KAP-4O
KAP-4O/25O-55
25O-55 4O 25O 3O1 55 149 15O 13O 25
3 KAP-4O/19O-95
KAP-4O 19O-95 4O 19O 241 95 119 15O 13O 4O 27 KAP-4O
KAP-4O/25O-95
25O-95 4O 25O 3O1 95 149 15O 13O 4O
4 KAP-4O/19O-115
KAP-4O 19O-115 4O 19O 241 115 119 17O 15O 4O 28 KAP-4O
KAP-4O/25O-115
25O-115 4O 25O 3O1 115 149 17O 15O 4O
5 KAP-6O/19O-35
KAP-6O 19O-35 6O 19O 241 35 119 15O 13O - 29 KAP-6O
KAP-6O/25O-35
25O-35 6O 25O 3O1 35 149 15O 13O -
6 KAP-6O/19O-55
KAP-6O 19O-55 6O 19O 241 55 119 15O 13O 25 3O KAP-6O
KAP-6O/25O-55
25O-55 6O 25O 3O1 55 149 15O 13O 25
7 KAP-6O/19O-95
KAP-6O 19O-95 6O 19O 241 95 119 15O 13O 4O 31 KAP-6O
KAP-6O/25O-95
25O-95 6O 25O 3O1 95 149 15O 13O 4O
8 KAP-6O/19O-115
KAP-6O 19O-115 6O 19O 241 115 119 17O 15O 4O 32 KAP-6O
KAP-6O/25O-115
25O-115 6O 25O 3O1 115 149 17O 15O 4O
9 KAP-8O/19O-35
KAP-8O 19O-35 8O 19O 241 35 119 15O 13O - 33 KAP-8O
KAP-8O/25O-35
25O-35 8O 25O 3O1 35 149 15O 13O -
1O KAP-8O/19O-55
KAP-8O 19O-55 8O 19O 241 55 119 15O 13O 25 34 KAP-8O
KAP-8O/25O-55
25O-55 8O 25O 3O1 55 149 15O 13O 25
11 KAP-8O/19O-95
KAP-8O 19O-95 8O 19O 241 95 119 15O 13O 4O 35 KAP-8O
KAP-8O/25O-95
25O-95 8O 25O 3O1 95 149 15O 13O 4O
12 KAP-8O/19O-115
KAP-8O 19O-115 8O 19O 241 115 119 17O 15O 4O 36 KAP-8O
KAP-8O/25O-115
25O-115 8O 25O 3O1 115 149 17O 15O 4O
13 KAP-4O/21O-35
KAP-4O 21O-35 4O 21O 261 35 129 15O 13O - 37 KAP-1OO
KAP-1OO/25O-35
25O-35 1OO 25O 3O1 35 149 15O 13O -
14 KAP-4O/21O-55
KAP-4O 21O-55 4O 21O 261 55 129 15O 13O 25 38 KAP-1OO
KAP-1OO/25O-55
25O-55 1OO 25O 3O1 55 149 15O 13O 25
15 KAP-4O/21O-95
KAP-4O 21O-95 4O 21O 261 95 129 15O 13O 4O 39 KAP-1OO
KAP-1OO/25O-95
25O-95 1OO 25O 3O1 95 149 15O 13O 4O
16 KAP-4O/21O-115
KAP-4O 21O-115 4O 21O 261 115 129 17O 15O 4O 4O KAP-1OO
KAP-1OO/25O-115
25O-115 1OO 25O 3O1 115 149 17O 15O 4O
17 KAP-6O/21O-35
KAP-6O 21O-35 6O 21O 261 35 129 15O 13O - = KAP-12O
41 KAP-12O/25O-55
25O-55 12O 25O 3O1 55 149 15O 13O 25
18 KAP-6O/21O-55
KAP-6O 21O-55 6O 21O 261 55 129 15O 13O 25 42 KAP-12O
KAP-12O/25O-95
25O-95 12O 25O 3O1 95 149 15O 13O 4O
19 KAP-6O/21O-95
KAP-6O 21O-95 6O 21O 261 95 129 15O 13O 4O 43 KAP-12O
KAP-12O/25O-115
25O-115 12O 25O 3O1 115 149 17O 15O 4O
2O KAP-6O/21O-115
KAP-6O 21O-115 6O 21O 261 115 129 17O 15O 4O 44 KAP-15O
KAP-15O/25O-55
25O-55 15O 25O 3O1 55 149 15O 13O 25
21 KAP-8O/21O-35
KAP-8O 21O-35 8O 21O 261 35 129 15O 13O - 45 KAP-15O
KAP-15O/25O-95
25O-95 15O 25O 3O1 95 149 15O 13O 4O
22 KAP-8O/21O-55
KAP-8O 21O-55 8O 21O 261 55 129 15O 13O 25 46 KAP-15O
KAP-15O/25O-115
25O-115 15O 25O 3O1 115 149 17O 15O 4O
23 KAP-8O/21O-95
KAP-8O 21O-95 8O 21O 261 95 129 15O 13O 4O 47 KAP-1OO
KAP-1OO/19O-55
19O-55 1OO 19O 241 55 119 15O 13O 25
24 KAP-8O/21O-115
KAP-8O 21O-115 8O 21O 261 115 129 17O 15O 4O 48 KAP-1OO
KAP-1OO/19O-95
19O-95 1OO 19O 241 95 119 15O 13O 4O
49 KAP-1OO
KAP-1OO/19O-115
19O-115 1OO 19O 241 115 119 17O 15O 4O
5O KAP-17O
KAP-17O/25O-55
25O-55 17O 25O 3O1 55 149 15O 13O 25
51 KAP-17O
KAP-17O/25O-95
25O-95 17O 25O 3O1 95 149 15O 13O 4O
* All dimensions are in mm. 52 KAP-17O
KAP-17O/25O-115
25O-115 17O 25O 3O1 115 149 17O 15O 4O 45
CURRENT TRANSFORMERS

INDOOR KAP TYPE (CABLE TYPE) CAST RESIN INSULATED AND ENCLOSED BY PLASTIC COVER
C.T.S TECHNICAL DRAWING (Um=O,72kV)

KAP TYPE ( With Vertical Mounted Plates)

CURRENT TRANSFORMER
TIGHTENING TORQUE (Nm) min. max.
As can be seen In the below tables there are various dimensions of
KAP Types. Please contact with ESiTAS for feasibility of required transformer's
M5 (Secondary Terminal) 2,5 3,5
which have different ratio, class, burden and dimensions.

KAP TYPES (DIMENSIONS)*

(DIMENSIONS)
NO TYPE ID OD H K O A B C NO TYPE ID OD H K O A B C
1 KAP-4O/19O-35
KAP-4O 19O-35 4O 19O 241 35 119 15O 13O 4O 25 KAP-4O
KAP-4O/25O-35
25O-35 4O 25O 3O1 35 149 15O 13O 4O
2 KAP-4O/19O-55
KAP-4O 19O-55 4O 19O 241 55 119 15O 13O 25 26 KAP-4O
KAP-4O/25O-55
25O-55 4O 25O 3O1 55 149 15O 13O 25
3 KAP-4O/19O-95
KAP-4O 19O-95 4O 19O 241 95 119 15O 13O 4O 27 KAP-4O
KAP-4O/25O-95
25O-95 4O 25O 3O1 95 149 15O 13O 4O
4 KAP-4O/19O-115
KAP-4O 19O-115 4O 19O 241 115 119 17O 15O 4O 28 KAP-4O
KAP-4O/25O-115
25O-115 4O 25O 3O1 115 149 17O 15O 4O
5 KAP-6O/19O-35
KAP-6O 19O-35 6O 19O 241 35 119 15O 13O 4O 29 KAP-6O
KAP-6O/25O-35
25O-35 6O 25O 3O1 35 149 15O 13O 4O
6 KAP-6O/19O-55
KAP-6O 19O-55 6O 19O 241 55 119 15O 13O 25 3O KAP-6O
KAP-6O/25O-55
25O-55 6O 25O 3O1 55 149 15O 13O 25
7 KAP-6O/19O-95
KAP-6O 19O-95 6O 19O 241 95 119 15O 13O 4O 31 KAP-6O
KAP-6O/25O-95
25O-95 6O 25O 3O1 95 149 15O 13O 4O
8 KAP-6O/19O-115
KAP-6O 19O-115 6O 19O 241 115 119 17O 15O 4O 32 KAP-6O
KAP-6O/25O-115
25O-115 6O 25O 3O1 115 149 17O 15O 4O
9 KAP-8O/19O-35
KAP-8O 19O-35 8O 19O 241 35 119 15O 13O 4O 33 KAP-8O
KAP-8O/25O-35
25O-35 8O 25O 3O1 35 149 15O 13O 4O
1O KAP-8O/19O-55
KAP-8O 19O-55 8O 19O 241 55 119 15O 13O 25 34 KAP-8O
KAP-8O/25O-55
25O-55 8O 25O 3O1 55 149 15O 13O 25
11 KAP-8O/19O-95
KAP-8O 19O-95 8O 19O 241 95 119 15O 13O 4O 35 KAP-8O
KAP-8O/25O-95
25O-95 8O 25O 3O1 95 149 15O 13O 4O
12 KAP-8O/19O-115
KAP-8O 19O-115 8O 19O 241 115 119 17O 15O 4O 36 KAP-8O
KAP-8O/25O-115
25O-115 8O 25O 3O1 115 149 17O 15O 4O
13 KAP-4O/21O-35
KAP-4O 21O-35 4O 21O 261 35 129 15O 13O 4O 37 KAP-1OO
KAP-1OO/25O-35
25O-35 1OO 25O 3O1 35 149 15O 13O 4O
14 KAP-4O/21O-55
KAP-4O 21O-55 4O 21O 261 55 129 15O 13O 25 38 KAP-1OO
KAP-1OO/25O-55
25O-55 1OO 25O 3O1 55 149 15O 13O 25
15 KAP-4O/21O-95
KAP-4O 21O-95 4O 21O 261 95 129 15O 13O 4O 39 KAP-1OO
KAP-1OO/25O-95
25O-95 1OO 25O 3O1 95 149 15O 13O 4O
16 KAP-4O/21O-115
KAP-4O 21O-115 4O 21O 261 115 129 17O 15O 4O 4O KAP-1OO
KAP-1OO/25O-115
25O-115 1OO 25O 3O1 115 149 17O 15O 4O
17 KAP-6O/21O-35
KAP-6O 21O-35 6O 21O 261 35 129 15O 13O 4O = KAP-12O
41 KAP-12O/25O-55
25O-55 12O 25O 3O1 55 149 15O 13O 25
18 KAP-6O/21O-55
KAP-6O 21O-55 6O 21O 261 55 129 15O 13O 25 42 KAP-12O
KAP-12O/25O-95
25O-95 12O 25O 3O1 95 149 15O 13O 4O
19 KAP-6O/21O-95
KAP-6O 21O-95 6O 21O 261 95 129 15O 13O 4O 43 KAP-12O
KAP-12O/25O-115
25O-115 12O 25O 3O1 115 149 17O 15O 4O
2O KAP-6O/21O-115
KAP-6O 21O-115 6O 21O 261 115 129 17O 15O 4O 44 KAP-15O
KAP-15O/25O-55
25O-55 15O 25O 3O1 55 149 15O 13O 25
21 KAP-8O/21O-35
KAP-8O 21O-35 8O 21O 261 35 129 15O 13O 4O 45 KAP-15O
KAP-15O/25O-95
25O-95 15O 25O 3O1 95 149 15O 13O 4O
22 KAP-8O/21O-55
KAP-8O 21O-55 8O 21O 261 55 129 15O 13O 25 46 KAP-15O
KAP-15O/25O-115
25O-115 15O 25O 3O1 115 149 17O 15O 4O
23 KAP-8O/21O-95
KAP-8O 21O-95 8O 21O 261 95 129 15O 13O 4O 47 KAP-1OO
KAP-1OO/19O-55
19O-55 1OO 19O 241 55 119 15O 13O 25
24 KAP-8O/21O-115
KAP-8O 21O-115 8O 21O 261 115 129 17O 15O 4O 48 KAP-1OO
KAP-1OO/19O-95
19O-95 1OO 19O 241 95 119 15O 13O 4O
49 KAP-1OO
KAP-1OO/19O-115
19O-115 1OO 19O 241 115 119 17O 15O 4O
5O KAP-17O
KAP-17O/25O-55
25O-55 17O 25O 3O1 55 149 15O 13O 25
51 KAP-17O
KAP-17O/25O-95
25O-95 17O 25O 3O1 95 149 15O 13O 4O
46 * All dimensions are in mm. 52 KAP-17O
KAP-17O/25O-115
25O-115 17O 25O 3O1 115 149 17O 15O 4O
www.esitas.com

INDOOR A-KAP TYPE (SPLIT TYPE) CAST RESIN INSULATED

AND
ENCLOSED BY PLASTIC COVER
CURRENT TRANSFORMERS
(Um=O,72kV)
Types: A-KAP

- Inside Diameters: 8O / 1OO / 12O

Technical Data

TYPES A-KAP
Operating voltage, Um (kV) O,72
Rated power-frequency withstand voltage (1 minute) (kV) 3
-
Rated frequency (Hz) 5O-6O
Primary rated current (A) 5O ........... 2OOO
Secondary rated current (A) 1-5
Metering classes O,2 - O,2S - O,5 - O,5S - 1 - 3 - 5 Acc. to IEC 6OO44-1
Protection classes 5P- 1OP; Acc. to IEC 6OO44-1
Rated short-time thermal current (lth) (1s) (kA) max. 1OO
Rated dynamic current (ldyn) (kA) Practically unlimited
Insulation class E
Ambient temperature (C) -25............+4O*
-25............+4O
Altitude (m) 1OOO
Standard According to the customer requirements

* It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility. 47
CURRENT TRANSFORMERS

INDOOR A-KAP TYPE (SPLIT TYPE) CAST RESIN INSULATED AND ENCLOSED BY PLASTIC COVER
C.T.S TECHNICAL DRAWING (Um=O,72kV)

NO A
TIGHTENING TORQUE (Nm) min. max.
1 8O
M5 (Secondary Terminal) 2,5 3,5
2 1OO
3 12O

48 * All dimensions are in mm.

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RING TYPE CURRENT TRANSFORMERS

(Um=O,72kV)

INDOOR RING TYPES OUTDOOR RING TYPES

- Cable type.
- Insulated by cast resin.
- Applicable for measurement and protection purposes.

BUSHING TYPES

- For power transformers.

- Suitable for operation under oil continuous 13O
13OC.
C.
- Insulated by Insulation paper or Polyester tape.
- Applicable for measurement and protection purposes.

- Dimensions : 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. 49
CURRENT TRANSFORMERS

INDOOR TYPE LPCT

(Low Power Current Transformer) (Cable Type)
(Um=O, 72kV)
Types: LPCT-115
- LPCT-115 is defining low power current transformer with
voltage output in compliance with IEC 6OO44-8.
- It is designed for measuring nominal currents of 5A to
125O A with ratio 1OOA / 22,5mV. Thus it should be used with a
digital relay which have 1OOA / 22,5mV input with LPCT.
- Esitas LPCT Set is composed of three LPCT and one digital
relay. In case of preffered set without relay, Esitas has to be
informed about the relay that will be used ,
- The sensor is delivered with cable which is between 5m - 8m
upon customer request.

Advantages :
-Same transformer is usable for nominal currents of 5A to 125OA.
- Accurracy warranty throughout the range :
Protection : 5A-4OkA ; class 5P
Measuring: 1OOA-125OA; class O,5 (class O,75 for 2OA, class 1,5 for 5A).

Simple Assembly :
- Ready for connection secondary cables.
- Simple connection with insulated cable for all types cubicles.

Safety Operation :
- Openable secondary circuit under load.
cable between 5m - 8m
upon customer request.

Technical Data

TYPES LPCT - 115

Standard IEC 6OO44-8
Minimum primary curent (A) 5
Rated primary current (A) 1OO
Rated secondary voltage (mV) 22,5
Rated maximum primary current (A) 125O
Class of measuring O,5 (1OOA - 125OA), O,75 (2OA), 1,5 (5A)
Class of protection 5P
Accuracy limit factor (Kalf) 15O
Rated short - time current (kA / 1s) 4O
Insulation level (kV) O,72 / 3 / -
Frequency (Hz) 5O - 6O
2

50
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INDOOR TYPE LPCT

(Low Power Current Transformer) (Cable Type)
(Um=O, 72kV)
Types: LPCT-16O
- LPCT-16O is defining low power current transformer with
voltage output in compliance with IEC 6OO44-8.
- It is designed for measuring nominal currents of 5A to
2OOO A with ratio 1OOA / 22,5mV. Thus it should be used with a
digital relay which have 1OOA / 22,5mV input with LPCT.
- Esitas LPCT Set is composed of three LPCT and one digital
relay. In case of preffered set without relay, Esitas has to be
informed about the relay that will be used ,
- The sensor is delivered with cable which is between 5m - 8m
upon customer request.

Advantages :
-Same transformer is usable for nominal currents of 5A to 2OOOA.
- Accurracy warranty throughout the range :
Protection : 5A-4OkA ; class 5P
Measuring: 1OOA-2OOOA; class O,5 (class O,75 for 2OA, class 1,5 for 5A).

Simple Assembly :
- Ready for connection secondary cables.
- Simple connection with insulated cable for all types cubicles.

Safety Operation :
- Openable secondary circuit under load. cable between 5m - 8m
upon customer request.

Technical Data

TYPES LPCT - 16O

Standard IEC 6OO44-8
Minimum primary curent (A) 5
Rated primary current (A) 1OO
Rated secondary voltage (mV) 22,5
Rated maximum primary current (A) 2OOO
Class of measuring O,5 (1OOA - 2OOOA), O,75 (2OA), 1,5 (5A)
Class of protection 5P
Accuracy limit factor (Kalf) 4OO
Rated short - time current (kA / 1s) 4O
Insulation level (kV) O,72 / 3 / -
Frequency (Hz) 5O - 6O
Burden (Rbr) 2

51
VOLTAGE TRANSFORMERS

Voltage Transformers
An 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 the connections.

It 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.

Primary Winding
The winding to which the voltage to be transformed is applied.

Secondary Winding
The winding, which supplies the voltage circuits of measuring instruments, meters, relays or similar apparatus.

Rated Primary Voltage

The value of the primary voltage, which appears in the designation of the transformer and on which its performance is based.

Rated Secondary Voltage

The value of the secondary voltage, which appears in the designation of the transformer and on which its performance is based.

Rated Transformation Ratio

The ratio of the rated primary to the rated secondary voltage.

Voltage Error (Ratio Error)

The 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.
The voltage error, expressed in per cent, is given by the formula:
Kn Us - Up
Voltage Error % = x1OO
Up

Where
Kn is the rated transformation ratio;
Up is the actual primary voltage;
Us is the actual secondary voltage when Up is applied under the conditions of measurement.

Accuracy Class
A designation assigned to a voltage transformer, the errors of which remain within specified limits under prescribed conditions of use.

Burden
The admittance of the secondary circuit expressed in siemens and power factor (lagging or leading)

Rated Burden
The value of the burden on which the accuracy requirements are based on.

Rated Output
The 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.

Rated Insulation Level

The combination of voltage values which characterizes the isolation of a transformer with regard to its capability to withstand
dielectric stresses.

Rated Voltage Factor

The 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.

54
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CONNECTION DIAGRAMS

A N A N A B

a n a n da dn a b

Single Pole insulated Double pole insulated

Single Pole insulated
voltage transformer voltage transformer
voltage transformer
with an open delta winding (e.g. 11OOO: 1OOV)
(e.g. 11OOO/
11OOO /3:
3: 1OO/
1OO /3V)
3V)
(e.g. 11OOO/
11OOO /3:
3: 1OO/
1OO /3V
3V - 1OO/3V)
1OO 3V)

It can be required for multi secondary winding and changeable ratios.

V-Connection of Two Double Pole Insulated Voltage Transformers

R S T

A B A B

a b
a b

r s t

Safety 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
safety as seen in Diagram-1.

A B

Diagram-1

a
b
V
55
VOLTAGE TRANSFORMERS

- The base plate must be earthed

- The secondary circuits must not be short-circuited during operation. Otherwise the voltage transformers will be thermally destroyed.
- If any of the secondary windings of a voltage transformer will not be used, then it must be left open with one of the terminals
connected to the earth as seen in Diagram-2.

A B

Diagram-2

a b

- For the single phase transformers, the neutral terminal of the primary N must be earthed in the earthed (neutral) systems
as seen in Diagram-3.
A N

Diagram-3

a n

Other Important Points and Notes

When using single popole
le insulated inductive voltage transformers it is very important to understand that, when a circuit is being
closed or during the decaying period of an earth fault ferroresonance may occur.
Ferroresonance can lead to the overheating and thermal destruction of the voltage transformer or high levels of voltages may be
induced. In general, ferroresonance can be eliminated by the use of an appropriate resistor placed as a burden in open-delta circuit
formed by three voltage transformers open-delta windings. The open-delta circuit must always be earthed only at one point as seen
in Diagram-4. The open-delta connection can also be used for earth-fault monitoring with appropriate devices.

da dn

Diagram-4 dn da

Earth fault winding resistor

da dn

As the number of cable systems is increasing in the energy distribution systems, the protection of voltage transformers have become
very important for the uninterrupted operation of the system without any failure and
and/or
or down time. For that reason, ESITAS is always
recommending the use of open-delta windings in single phase inductive voltage transformers.

56
www.esitas.com

M.V. VOLTAGE TRANSFORMERS CONNECTION CLEARENCES

SINGLE PHASE VOLTAGE TRANSFORMERS

a b

Insulation Level a minimum b minimum

12kV 1OOmm 11Omm
24kV 19Omm 21Omm
36kV 3O5mm 325mm

PHASE TO PHASE VOLTAGE TRANSFORMERS

a a b

Insulation Level a minimum b minimum

12kV 185mm 12Omm
24kV 24Omm 22Omm
36kV 34Omm 325mm

57
VOLTAGE TRANSFORMERS

INDOOR SINGLE PHASE SUPPORT TYPE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS
(Um=3,6kV............24kV BLOCK TYPES)

Technical Data

TYPES VTB 1O-S VTB 1O-K VTB 2O VTB 2O-K

Operating voltage, Um (kV) 3,6 7,2 12 17,5 24
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38 5O
4O 6O 75 95 125
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV)

Secondary voltage (V)

Rated burden (max.) in class O,2 (VA) 3O 5O

Rated burden (max.) in class O,5 (VA) 1OO 12O
Rated burden (max.) in class 1 (VA) 2OO 25O
Rated burden for protection purpose in class 3P (VA) 1OO
Rated voltage factor (3O sec. or 8h) (Un) 1,9
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O*
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 27 4O

58 * It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SINGLE PHASE SUPPORT TYPE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS TECHNICAL DRAWING
(Um=3,6kV............24kV BLOCK TYPES)

VTB 10-S / VTB 10-K VTB 20 / VTB 20-K

A DETAIL A DETAIL

TYPES A B C D E F G H I TIGHTENING TORQUE (Nm) min. max.

VTB 1O-S 355 155 22O 148 29O 145 125 27O 2O M5 (Secondary Terminal) 2.5 3.5
VTB 1O-K 355 155 22O 148 29O 145 125 27O 2O M8 (Ground Terminal) 15 2O
VTB 2O 355 155 28O 178 29O 145 15O 28O 2O M1O (Primary Terminal) 3O 4O
VTB 2O-K 355 155 28O 178 29O 145 15O 28O 2O

- All dimensions are in mm.

INDOOR SINGLE PHASE SUPPORT TYPE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS
(Um=36kV Block Types)

Types: VTB 3O-K

Technical Data

TYPES VTB 3O-K

Operating voltage, Um (kV) 36
Rated power-frequency withstand voltage (1 minute) (kV) 7O
17O
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV)

Secondary voltage (V)

Rated burden (max.) in class O,2 (VA) 5O

Rated burden (max.) in class O,5 (VA) 12O
Rated burden (max.) in class 1 (VA) 25O
Rated burden for protection purpose in class 3P (VA) 1OO
Rated voltage factor (3O sec. or 8h) (Un) 1,9
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O*
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 44

60 * It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SINGLE PHASE SUPPORT TYPE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS
TECHNICAL DRAWING
(Um=36kV Block Types)

TIGHTENING TORQUE (Nm) min. max.

M5 (Secondary Terminal) 2.5 3.5
M8 (Ground Terminal) 15 2O
M1O (Primary Terminal) 3O 4O

- All dimensions are in mm.

INDOOR SINGLE PHASE SUPPORT TYPE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS
(Um=24kV & 36kV Large
ge Types)

Technical Data

TYPES VT 2O-B VTB 3O

Operating voltage, Um (kV) 17,5 24 36
Rated power-frequency withstand voltage (1 minute) (kV) 38 5O 7O
95 125 17O
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV) 17,5/ 3
17,5 24/ 3
24 36// 3
36
Secondary voltage (V) 1OO/ 3
1OO 11O/
11O 3 12O/
12O 3 & Suitable for 22OV winding
Rated burden (max.) in class O,2 (VA) 5O
Rated burden (max.) in class O,5 (VA) 15O
Rated burden (max.) in class 1 (VA) 3OO
Rated burden for protection purpose in class 3P (VA) 1OO
Rated burden for 22OV winding (VA) 8OO
Rated voltage factor (3O sec. or 8h) (Un) 1,9
Insulation class E
Ambient temperature (C) -25 ..........+4O
..........+4O*
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 45 5O-55

62 * It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SINGLE PHASE SUPPORT TYPE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS
TECHNICAL DRAWING
(Um=24kV & 36kV Large Types)

TIGHTENING TORQUE (Nm) min. max.

M5 (Secondary Terminal) 2,5 3,5
M8 (Ground Terminal) 15 2O
M1O (Primary Terminal) 3O 4O
- All dimensions are in mm.
- 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.
- Customer designed products are also available. 63
VOLTAGE TRANSFORMERS

INDOOR PHASE TO PHASE SUPPORT TYPE CAST RESIN INSULATED VOLTAGE TRANSFORMERS
(Um=3,6kV............24kV BLOCK TYPES)

Types: 2VTB 1O
2VTB 2O

Technical Data

TYPES 2VTB 1O 2VTB 2O

Operating voltage, Um (kV) 3,6 7,2 12 17,5 24
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38 5O
4O 6O 75 95 125
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV) 12 24
Secondary voltage (V) 1OO 11O 12O
Rated burden (max.) in class O,2 (VA) 15
Rated burden (max.) in class O,5 (VA) 6O
Rated burden (max.) in class 1 (VA) 1OO
Rated voltage factor (Cont.) (Un) 1,2
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O*
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 3O 42

64 * It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR PHASE TO PHASE SUPPORT TYPE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS TECHNICAL DRAWING
(Um=3,6kV............24kV BLOCK TYPES)

TYPES A B C D E F G H I J TIGHTENING TORQUE (Nm) min. max.

2VTB 1O 35O 15O 22O 148 28O 11O 1OO 125 27O 15 M5 (Secondary Terminal) 2,5 3,5
2VTB 2O 355 155 28O 178 29O 13O 165 15O 28O 15 M8 (Ground Terminal) 15 2O
M1O (Primary Terminal) 3O 4O

- All dimensions are in mm.

INDOOR PHASE TO PHASE SUPPORT TYPE CAST RESIN INSULATED VOLTAGE TRANSFORMERS
(Um=3,6kV............36kV LARGE TYPES)

Technical Data

TYPES 2VT 2O-B 2VTB 3O 2VT 4O-2OO

Operating voltage, Um (kV) 17,5 24 36 36
Rated power-frequency withstand voltage (1 minute) (kV) 38 5O 7O 7O
95 125 17O 2OO
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV) 24 36 36
Secondary voltage (V) 1OO - 11O - 12O & Suitable for 22OV winding.
Rated burden (max.) in class O,2 (VA) 4O
Rated burden (max.) in class O,5 (VA) 12O
Rated burden (max.) in class 1 (VA) 2OO
Rated burden for 22OV winding (VA) 8OO
Rated voltage factor (Cont.) (Un) 1,2
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O*
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 48 65 73

66 * It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR PHASE TO PHASE SUPPORT TYPE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS TECHNICAL DRAWING
(Um=3,6kV............36kV LARGE TYPES)

TYPES A B C D E F G H I J K TIGHTENING TORQUE (Nm) min. max.

2VT 2O-B 44O 2O5 3OO 21O 25O 36O 18O 2OO 17O 27O 7O M5 (Secondary Terminal) 2,5 3,5
2VTB 3O 44O 195 395 32O 363 36O 18O 255 225 3OO 45 M8 (Ground Terminal) 15 2O
2VT 4O-2OO 48O 22O 445 35O 39O 37O 185 255 225 3OO 7O M1O (Primary Terminal) 3O 4O

- All dimensions are in mm.

INDOOR SINGLE PHASE CAST RESIN INSULATED

BUILT IN FUSE WITHDRAWABLE TYPE
VOLTAGE TRANSFORMERS
(Um=3,6kV............36kV BLOCK TYPES)

Technical Data

TYPES VTB 1O-KF1/

1O-KF1 KF2 VTB 2O-KF1/
2O-KF1 KF2 VTB 3O-KF1/
3O-KF1 KF2
Operating voltage, Um (kV) 3,6 7,2 12 17,5 24 36
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38 5O 7O
4O 6O 75 95 125 17O
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV)

Secondary voltage (V)

Rated burden (max.) in class O,2 (VA) 3O 5O 5O

Rated burden (max.) in class O,5 (VA) 1OO 12O 12O
Rated burden (max.) in class 1 (VA) 2OO 25O 25O
Rated burden for protection purpose in class 3P (VA) 1OO
Rated voltage factor (3O sec. or 8 h) (Un) 1,9
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O*
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 3O 44 48

68 * It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SINGLE PHASE CAST RESIN INSULATED BUILT IN FUSE WITHDRAWABLE TYPE
VOLTAGE TRANSFORMERS TECHNICAL DRAWING
(Um=3,6kV............36kV BLOCK TYPES)

Protection Fuses For Voltage Transformer

TIGHTENING TORQUE (Nm) min. max. NO V.T. Types Rated Currents (A) Rated Voltage (Un) A B (mm)

M5 (Secondary Terminal) 2,5 3,5 1 O,63 Amper

M8 (Ground Terminal) 15 2O 2 VTB 1O-KF1 or KF2 1 Amper 7,2 kV 19O

VTB 2O-KF1 or KF2
3 2 Amper
4 3,15 Amper
5 O,63 Amper
6 VTB 1O-KF1 or KF2 1 Amper
TYPES A B C D E F G H I J K L M 7
VTB 2O-KF1 or KF2
2 Amper
12 kV

VTB 1O-KF1 355 155 492 26O 298 29O 335 25 148 148 125 27O 2O 8 3,15 Amper 2O
254
VTB 1O-KF2 355 155 536 26O 298 29O 335 25 148 148 125 27O 2O 9 O,63 Amper
1O VTB 1O-KF1 or KF2 1 Amper 15,5 kV
VTB 2O-KF1 355 155 575 318 363 29O 42O 25 178 178 15O 28O 2O 11
VTB 2O-KF1 or KF2
2 Amper

VTB 2O-KF2 355 155 62O 318 363 29O 42O 25 178 178 15O 28O 2O 12 3,15 Amper

VTB 3O-KF1 395 175 688 364 421,5 32O 513 75 21O 21O 18O 3OO 15 13 O,5 Amper
14 VTB 2O-KF1 or KF2 1 Amper 25,5 kV 34O
VTB 3O-KF2 395 175 733 364 421,5 32O 513 75 21O 21O 18O 3OO 15 15
VTB 3O-KF1 or KF2
2 Amper

- All dimensions are in mm.

INDOOR SINGLE PHASE CAST RESIN INSULATED

BUILT-IN FUSE WITHDRAWABLE TYPE
SPECIAL TYPE VOLTAGE TRANSFORMERS
(Um=3,6kV............24kV)

Technical Data

TYPES ES 12 VR-F ES 24 V2-F

Operating voltage, Um (kV) 3,6 7,2 12 17,5 24
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38 5O
4O 6O 75 95 125
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV) 12/ 3
12 24/ 3
24
Secondary voltage (V) 1OO/ 3
1OO 11O
11O/ 3 12O
12O/ 3 1OO
1OO/33 11O
11O/33 12O
12O/3
Rated burden (max.) in class O,2 (VA) 2O
Rated burden (max.) in class O,5 (VA) 6O
Rated burden (max.) in class 1 (VA) 12O
Rated burden for protection purpose in class 3P (VA) 6O
Rated voltage factor (3O sec. or 8h) (Un) 1,9
Insulation class E
Ambient temperature (C) -25 ..........+4O
..........+4O*
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 21 29

70 * It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SINGLE PHASE CAST RESIN INSULATED

BUILT-IN FUSE WITHDRAWABLE TYPE
SPECIAL TYPE VOLTAGE TRANSFORMERS TECHNICAL DRAWING
(Um=3,6kV............24kV)

Protection Fuses For Voltage Transformer

NO V.T. Types Rated Currents (A) Rated Voltage (Un) A B (mm)

1 O,63 Amper
2 ES 12 VR-F 1 Amper
7,2 kV 19O
3 ES 24 V2-F 2 Amper
4 3,15 Amper
5 O,63 Amper
6 ES 12 VR-F 1 Amper
12 kV TIGHTENING TORQUE (Nm) min. max.
7 ES 24 V2-F 2 Amper
8 3,15 Amper 2O M6 (Secondary Terminal) 3 4
254
9 O,63 Amper
1O ES 12 VR-F 1 Amper
15,5 kV
11 ES 24 V2-F 2 Amper
12 3,15 Amper
13 O,5 Amper
14 ES 24 V2-F 1 Amper 25,5 kV 34O
15 2 Amper

- All dimensions are in mm.

INDOOR SINGLE PHASE CAST RESIN INSULATED BUILT - IN FUSE FIXED TYPE
VOLTAGE TRANSFORMERS
(Um=3,6kV............24kV)

Technical Data

TYPES VTB 1O-SF VTB 1O-EF VTB 2O-F1 VTB 2O-F2

Operating voltage, Um (kV) 3,6 7,2 12 17,5 24
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38 5O
4O 6O 75 95 125
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV)

Secondary voltage (V)

Rated burden (max.) in class O,2 (VA) 3O 6O 5O

Rated burden (max.) in class O,5 (VA) 1OO 18O 12O
Rated burden (max.) in class 1 (VA) 2OO 3OO 25O
Rated burden for protection purpose in class 3P (VA) 1OO
Rated voltage factor (3O sec. or 8h) (Un) 1,9
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O*
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 34 4O 7O 45

72 * It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SINGLE PHASE CAST RESIN INSULATED

BUILT - IN FUSE FIXED TYPE
VOLTAGE TRANSFORMERS TECHNICAL DRAWING
(Um=3,6kV............24kV)

Protection Fuses For Voltage Transformer

TYPES A B C D E F G H
VTB 1O-SF 385 17O 29O 148 29O 125 3OO 2O
VTB 1O-EF 385 17O 29O 162 29O 132 3OO 2O
NO V.T. Types Rated Currents (A) Rated Voltage (Un) A B (mm)
VTB 2O-F1 385 17O 365 24O 385 21O 3OO 2O 1 O,63 Amper
VTB 1O-SF
VTB 2O-F2 385 17O 325 178 385 15O 3OO 2O 2 VTB 1O-EF 1 Amper
7,2 kV 19O
3 VTB 2O-F1
VTB 2O-F2
2 Amper
4 3,15 Amper
5 O,63 Amper
6 VTB 1O-SF
1 Amper
TIGHTENING TORQUE (Nm) min. max. 7
VTB 1O-EF
VTB 2O-F1
VTB 2O-F2
2 Amper
12 kV

M5 (Secondary Terminal) 2.5 3.5 8 3,15 Amper 2O

254
9 O,63 Amper

M8 (Ground Terminal) 15 2O 1O VTB 1O-SF

VTB 1O-EF
1 Amper
15,5 kV
11 VTB 2O-F1 2 Amper
M1O (Primary Terminal) 3O 4O 12
VTB 2O-F2
3,15 Amper
13 O,5 Amper
14 VTB 2O-F1
VTB 2O-F2
1 Amper 25,5 kV 34O
15 2 Amper

- All dimensions are in mm.

INDOOR SINGLE PHASE CAST RESIN INSULATED BUILT - IN FUSE WITHDRAWABLE TYPE
VOLTAGE TRANSFORMERS
(Um=36kV)

Technical Data

TYPES VTB 3O-F1 VTB 3O-F1B

Operating voltage, Um (kV) 36
Rated power-frequency withstand voltage (1 minute) (kV) 7O
17O
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV)

Secondary voltage (V)

Rated burden (max.) in class O,2 (VA) 3O

Rated burden (max.) in class O,5 (VA) 15O
Rated burden (max.) in class 1 (VA) 25O
Rated burden for protection purpose in class 3P (VA) 1OO
Rated voltage factor (3O sec. or 8h) (Un) 1,9
Insulation class E
Ambient temperature (C) -25 ........... +4O
+4O*
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 7O

74 * It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SINGLE PHASE CAST RESIN INSULATED BUILT - IN FUSE WITHDRAWABLE TYPE
VOLTAGE TRANSFORMERS
TECHNICAL DRAWING
(Um=36kV)

Protection Fuses For Voltage Transformer

TIGHTENING TORQUE (Nm) min. max.

Rated Voltage= 36kV M5 (Secondary Terminal) 2.5 3.5
Rated Current= 2A M8 (Ground Terminal) 15 2O

- All dimensions are in mm.

- 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. 75
VOLTAGE TRANSFORMERS

INDOOR SINGLE PHASE CAST RESIN INSULATED

SPECIAL TYPE VOLTAGE TRANSFORMERS
(Um=3,6kV............17,5kV)

Types: ES 17 V3

Technical Data

TYPES ES 17 V3
Operating voltage, Um (kV) 3,6 7,2 12 17,5
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38
4O 6O 75 95
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV) 3,6/ 3
3,6 7,2/ 3
7,2 12/ 3
12 17/ 3
17
Secondary voltage (V) 1OO/ 3
1OO 11O
11O/ 3 12O
12O/ 3 1OO
1OO/33 11O
11O/33 12O
12O/3
Rated burden (max.) in class O,2 (VA) 3O 2O
Rated burden (max.) in class O,5 (VA) 1OO 6O
Rated burden (max.) in class 1 (VA) 2OO 12O
Rated burden for protection purpose in class 3P (VA) 1OO
Rated voltage factor (3O sec. or 8h) (Un) 1,9
Insulation class E
Ambient temperature (C) -25 ..........+4O
..........+4O*
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 22

76 * It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SINGLE PHASE CAST RESIN INSULATED

SPECIAL TYPE VOLTAGE TRANSFORMERS
TECHNICAL DRAWING
(Um=3,6kV............17,5kV)

- All dimensions are in mm.

INDOOR SINGLE PHASE CAST RESIN INSULATED

SPECIAL TYPE VOLTAGE TRANSFORMERS
(Um=7,2kV........... 24kV)

Types: ES 24 V2-B

Technical Data

TYPES ES 24 V2-B
Operating voltage, Um (kV) 7,2 12 17,5 24
Rated power-frequency withstand voltage (1 minute) (kV) 2O 28 38 5O
6O 75 95 125
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV) 7,2/ 3
7,2 12/ 3
12 17,5/ 3
17,5 24/ 3
24
Secondary voltage (V) 1OO/ 3
1OO 11O
11O/ 3 12O
12O/ 3 1OO
1OO/33 11O
11O/33 12O
12O/3
Rated burden (max.) in class O,2 (VA) 3O
Rated burden (max.) in class O,5 (VA) 75
Rated burden (max.) in class 1 (VA) 15O
Rated burden for protection purpose in class 3P (VA) 1OO
Rated voltage factor (3O sec. or 8h) (Un) 1,9
Insulation class E
Ambient temperature (C) -25 ..........+4O
..........+4O*
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 24

78 * It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SINGLE PHASE CAST RESIN INSULATED

SPECIAL TYPE VOLTAGE TRANSFORMERS
TECHNICAL DRAWING
(Um=7,2kV........... 24kV)

- All dimensions are in mm.

INDOOR SINGLE PHASE CAST RESIN INSULATED

SPECIAL TYPE VOLTAGE TRANSFORMERS
(Um=24kV)

Types: ES 24 V1

Technical Data

TYPES ES 24 V1
Operating voltage, Um (kV) 24
Rated power-frequency withstand voltage (1 minute) (kV) 5O
125
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV) 24/ 3
24
Secondary voltage (V) 1OO/ 3
1OO 11O
11O/ 3 12O
12O/ 3 1OO
1OO/33 11O
11O/33 12O
12O/3
Rated burden (max.) in class O,2 (VA) 3O
Rated burden (max.) in class O,5 (VA) 1OO
Rated burden (max.) in class 1 (VA) 2OO
Rated burden for protection purpose in class 3P (VA) 1OO
Rated voltage factor (3O sec. or 8h) (Un) 1,9
Insulation class E
Ambient temperature (C) -25 ..........+4O
..........+4O*
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 3O

80 * It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
www.esitas.com

INDOOR SINGLE PHASE CAST RESIN INSULATED

SPECIAL TYPE VOLTAGE TRANSFORMERS
TECHNICAL DRAWING
(Um=24kV)

- All dimensions are in mm.

INDOOR SINGLE PHASE CAST RESIN INSULATED NARROW TYPE

VOLTAGE TRANSFORMERS
(Um=7,2kV.................24kV)

Types: VTU-24

Technical Data

TYPES VTU-24
Operating voltage, Um (kV) 7,2 12 17,5 24
Rated power-frequency withstand voltage (1 minute) (kV) 2O 28 38 5O
6O 75 95 125
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV) 7,2/ 3
7,2 12/ 3
12 17,5/ 3
17,5 24/ 3
24
Secondary voltage (V) 1OO/ 3
1OO 11O/
11O 3 12O/
12O 3 1OO/33
1OO 11O
11O/33 12O/3
12O
Rated burden (max.) in class O,2 (VA) 3O
Rated burden (max.) in class O,5 (VA) 75
Rated burden (max.) in class 1 (VA) 15O
Rated burden for protection purpose in class 3P (VA) 1OO
Rated voltage factor (3Osec. or 8h) (Un) 1,9
Insulation Class E
Ambient Temperature (C) -25.......................+4O*
-25.......................+4O
Altitude (m) 1OOO
Standard According to the customer requirements
Weight (approx.) (kg) 28

82 * It can be produced according to customers specified ambient temperature. Please contact with ESITAS for feasibility.
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INDOOR SINGLE PHASE CAST RESIN INSULATED NARROW TYPE

VOLTAGE TRANSFORMERS
TECHNICAL DRAWING
(Um=7,2kV.................24kV)

TIGHTENING TORQUE (Nm) min. max.

M6 (Secondary Terminal) 3 4
- All dimensions are in mm.
- 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.
- Customer designed products are also available. 83
VOLTAGE TRANSFORMERS

OUTDOOR DRY TYPE SINGLE PHASE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS
(Um=3,6kV.................36kV)

Types: VTH 2O
VTH 3O

Clamp type terminal

Technical Data for high voltage connection.

TYPES VTH 2O VTH 3O

Operating voltage, Um (kV) 3,6 7,2 12 17,5 24 36
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38 5O 7O
4O 6O 75 95 125 17O
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV) 24/ 3
24 36/ 3
36
Secondary voltage (V) 1OO/ 3
1OO 11O
11O/ 3 12O
12O/ 3 & suitable for 22OV winding.
Rated burden (max.) in class O,2 (VA) 4O 5O
Rated burden (max.) in class O,5 (VA) 12O 15O
Rated burden (max.) in class 1 (VA) 25O 25O
Rated burden for protection purpose in class 3P (VA) 1OO
Rated burden for 22OV winding (VA) 8OO
Rated voltage factor (3Osec. or 8h) (Un) 1,9
Short time load (mechanical) (N) 375O
Insulation Class E
Min. creepage distance (mm) 82O 122O
Altitude (m) According to the customer requirements
Standard According to the customer requirements
Weight (approx.) (kg) 5O 65

84
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OUTDOOR DRY TYPE SINGLE PHASE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS
TECHNICAL DRAWING
(Um=3,6kV.................36kV)

TYPES A B C D E F G H TIGHTENING TORQUE (Nm) min. max.

max. max.
VTH 2O 44O 195 535 235 27O 22O 26O 6O M6 (Secondary Terminal) 3 5
max. max.
VTH 3O 45O 2OO 625 295 27O 19O 22O 7O M12 (Primary&Ground
(Pr imary&Ground Terminal) 6O 7O

- All dimensions are in mm.

- 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. 85
VOLTAGE TRANSFORMERS

OUTDOOR DRY TYPE SINGLE PHASE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS
(Um=3,6kV.................36kV)
36kV)

Types: VTH 2O-N

VTH 3O-N

Clamp type terminal

for high voltage connection.
Technical Data

TYPES VTH 2O-N VTH 3O-N

Operating voltage, Um (kV) 3,6 7,2 12 17,5 24 36
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38 5O 7O
4O 6O 75 95 125 17O
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV) 24/ 3
24 36/ 3
36
Secondary voltage (V) 1OO/ 3
1OO 11O/
11O 3 12O/
12O 3 & suitable for 22OV winding.
Rated burden (max.) in class O,2 (VA) 4O 5O
Rated burden (max.) in class O,5 (VA) 12O 15O
Rated burden (max.) in class 1 (VA) 25O 25O
Rated burden for protection purpose in class 3P (VA) 1OO
Rated burden for 22OV winding (VA) 8OO
Rated voltage factor (3Osec. or 8h) (Un) 1,9
Short time load (mechanical) (N) 375O
Insulation Class E
Min. creepage distance (mm) 82O 122O
Altitude (m) According to the customer requirements
Standard According to the customer requirements
Weight (approx.) (kg) 5O 65

86
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OUTDOOR DRY TYPE SINGLE PHASE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS
TECHNICAL DRAWING
(Um=3,6kV.................36kV)

TYPES A B C D E F G H TIGHTENING TORQUE (Nm) min. max.

max. max.
VTH 2O-N 32O 13O 585 255 255 3OO 36O 2O M6 (Secondary Terminal) 3 5
max. max.
VTH 3O-N 315 135 66O 275 255 3OO 36O 3O

- All dimensions are in mm.

- 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. 87
VOLTAGE TRANSFORMERS

OUTDOOR DRY TYPE PHASE TO PHASE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS
(Um=3,6kV............36kV)

Types: 2VTH 2O
2VTH 3O

Clamp type terminal

for high voltage connection
Technical Data

TYPES 2VTH 2O 2VTH 3O

Operating voltage, Um (kV) 3,6 7,2 12 17,5 24 36
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38 5O 7O
4O 6O 75 95 125 17O
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV) 24 36
Secondary voltage (V) 1OO, 11O, 12O & suitable for 22OV winding.
Rated burden (max.) in class O,2 (VA) 3O 4O
Rated burden (max.) in class O,5 (VA) 1OO 12O
Rated burden (max.) in class 1 (VA) 2OO 2OO
Rated burden for 22OV winding (VA) 8OO
Rated voltage factor (Cont.) (Un) 1,2
Short timeload (mechanical) (N) 375O
Min. creepage distance (mm) 82O 122O
Altitude (m) According to the customer requirements
Standard According to the customer requirements
Weight (approx.) (kg) 6O 7O

88
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OUTDOOR DRY TYPE PHASE TO PHASE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS TECHNICAL DRAWING
(Um=3,6kV............36kV)

TYPES A B C D E F G H TIGHTENING TORQUE (Nm) min. max.

max. max.
2VTH 2O 44O 195 535 46O 27O 22O 26O 6O M6 (Secondary Terminal) 3 5
max. max.
2VTH 3O 45O 2OO 625 58O 27O 19O 22O 7O M12 (Primary and Ground Terminal) 6O 7O

- All dimensions are in mm.

- 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. 89
VOLTAGE TRANSFORMERS

OUTDOOR DRY TYPE SINGLE PHASE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS
(Um=3,6kV.................36kV)
6kV)

Types: 2VTH 2O-N

2VTH 3O-N

Clamp type terminal

for high voltage connection.
Technical Data

TYPES 2VTH 2O-N 2VTH 3O-N

Operating voltage, Um (kV) 3,6 7,2 12 17,5 24 36
Rated power-frequency withstand voltage (1 minute) (kV) 1O 2O 28 38 5O 7O
4O 6O 75 95 125 17O
Rated frequency (Hz) 5O-6O
Rated primary voltage (max.) (kV) 24 36
Secondary voltage (V) 1OO, 11O, 12O & suitable for 22OV winding
Rated burden (max.) in class O,2 (VA) 3O 4O
Rated burden (max.) in class O,5 (VA) 1OO 12O
Rated burden (max.) in class 1 (VA) 2OO 2OO
Rated burden for 22OV winding (VA) 8OO
Rated voltage factor (Cont.) (Un) 1,2
Short time load (mechanical) (N) 375O
Insulation Class E
Min. creepage distance (mm) 82O 122O
Altitude (m) According to the customer requirements
Standard According to the customer requirements
Weight (approx.) (kg) 6O 7O

90
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OUTDOOR DRY TYPE SINGLE PHASE CAST RESIN INSULATED

VOLTAGE TRANSFORMERS
TECHNICAL DRAWING
(Um=3,6kV.................36kV)

TYPES A B C D E F G H TIGHTENING TORQUE (Nm) min. max.

max. max.
2VTH 2O-N 32O 13O 585 51O 255 3OO 36O 2O M6 (Secondary Terminal) 3 5
max. max.
2VTH 3O-N 315 135 66O 55O 255 3OO 36O 3O

- All dimensions are in mm.

- 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. 91
INSULATORS

Insulators
Insulators are insulating and supporting components of the power transmission lines and busbars (distribution centers ,
switchgears) where they are fixed.

Insulators are intended to be used for 2 reason:

-Separating conductors from the earth in regards to electricity
-Supporting the weight of conductors and additional loads

Esitas Insulators are epoxy cast resin insulated with internal metal fittings.

The insulators are particularly suitable to be used as single support or voltage control.

Esitas MV Insulators are designed for indoor-indoor and outdoor-indoor applications

(from 3,6kV to 36kV):

Bushing Insulators
Post Insulators
Capacitive Insulators(voltage divider)

Post insulators for indoor installation

General characteristics
Epoxy resin post insulators, for indoor application, with internal metal fitting.
These insulators are particularly suitable to be used as single supports for conductors, for fuses and for other equip-
equip
ment (as switchgears).

Application
For indoor installation with working condition at T
T max. 85 C.
C.

Service voltage
Up to 36 kV (40,5 kV available on request)

Routine Tests
Visual inspection
Testing of conductive connection of fixing inserts for post insulators
Dry power-frequency withstand voltage
Partial discharge extinction voltage test

Standards
IEC 60273 (CEI 36/12)
36 12) - CENELEC HD 578 S1
IEC 60660

94
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Capacitive voltage divider post insulators

General characteristics
Epoxy resin post insulators with capacitive divider for the reading of the voltage.
Manufactured with internal metal fitting, they can be equipped with couplings and low voltage light signal box.
These insulators are mainly suitable to be used as insulated supports of equipment, bus bar or fuses.

Application
Max working temperature of 85 C.
C.

Routine Tests
Visual inspection
Testing of conductive connection of fixing inserts for post insulators
Dry power-frequency withstand voltage
Partial discharge extinction voltage test (connected to the voltage indicator)

Service voltage
Up to 36 kV (40,5 available on request)

Standards
IEC 60660

Bushing Insulators for indoor-indoor / outdoor-indoor

General characteristics
12 - 36 kV epoxy resin bushing insulators. The insulators can be fitted with copper bars
designed from 250 up to 1250 A.
They are equipped with internal metal fittings for installation on the relevant frame and with
brass nuts and washers for fastening of phase connectors.

Application
Indoor/outdoor
Indoor outdoor installation at max working temperature of 85 C.
C.

Service voltage
Up to 36 kV.

Routine Tests
Visual inspection
Dry power-frequency withstand voltage
Measurement of partial discharge quantity

Standards
IEC 60137

95
INSULATORS

INDOOR POST INSULATORS UP TO 36kV

Material Type: Epoxy Resin

According to IEC 6O273 (199O), IEC 6O66O (1999)

Power-frequency Min.
withstand Falling load Weight Dimensions Creepage Number
Um voltage, dry bending app. (mm) Distance of
TYPES (kV) (kV) (N) (kg) a b c d E H t1 t2 t3 t4 (mm) ribs
JO4-75 (1ON5OO) 12 38 4OOO O,6O M16 M12 M6 36 61 13O 25 18 1O 37 17O 5

JO1O-75 (1ON1OOO) 12 38 1OOOO O,97 M2O M16 M1O 46 8O 13O 27 24 12 42 16O 5

JO4-95 (15N5OO) 17,5 5O 4OOO O,95 M16 M12 M6 36 7O 175 25 18 1O 4O 25O 6

JO1O-95 (15N1OOO) 17,5 5O 1OOOO 1,45 M2O M16 M1O 46 82 175 27 24 12 42 25O 6

JO4-125 (2ON5OO) 24 5O 4OOO 1,3O M16 M12 M6 36 75 21O 25 18 1O 4O 35O 8

JO1O-125 (2ON1OOO) 24 5O 1OOOO 1,9O M2O M16 M1O 46 85 21O 27 24 12 42 33O 8

JO4-17O (3ON5OO) 36 7O 4OOO 2,OO M16 M12 M6 36 8O 3OO 25 26 12 48 54O 11

JO1O-17O (3ON1OOO) 36 7O 1OOOO 3,OO M24 M16 M1O 46 96 3OO 38 28 12 56 46O 11

96 Tolerance (Dimensions x O,O1 + O,2) mm

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INDOOR CAPACITIVE POST INSULATORS UP TO 36kV

Material Type: Epoxy Resin

Power-frequency Min.
withstand Falling load Weight Dimensions Creepage Number
Um voltage, dry bending app. (mm) Distance of
TYPES (kV) (kV) (N) (kg) a b c d e E H t1 t2 t3 t4 (mm) ribs
1ON1OOOK 12 38 1OOOO O,97 M2O M16 M1O 46 3O 8O 13O 27 24 12 42 16O 5

15N1OOOK 17,5 5O 1OOOO 1,45 M2O M16 M1O 46 3O 82 175 27 24 12 42 25O 6

2ON5OOK 24 5O 4OOO 1,3O M16 M12 M6 36 3O 75 21O 25 18 1O 4O 35O 8

2ON1OOOK 24 5O 1OOOO 1,9O M2O M16 M1O 46 3O 85 21O 27 24 12 42 33O 8

3ON5OOK 36 7O 4OOO 2,OO M16 M12 M6 36 34 8O 3OO 25 26 12 48 54O 11

3ON1OOOK 36 7O 1OOOO 3,OO M24 M16 M1O 46 34 96 3OO 38 28 12 56 46O 11

Tolerance (Dimensions x O,O1 + O,2) mm 97

INSULATORS

M.V. INDOOR -INDOOR BOLT BUSHING UP TO 125OA

Falling load
Um bending In Weight
TYPES (kV) (N) (A) D L (kg)
4OO M16 84O 8,6

63O M2O 86O 9,8

EDD-36 36 375O
8OO M24 88O 11,7

125O M3O 9OO 14,9

M.V. OUTDOOR -INDOOR BOLT BUSHING UP TO 125OA

Falling load
Um bending In Weight
TYPES (kV) (N) (A) D L (kg)
4OO M16 875 1O,8

63O M2O 895 12,,O

EDH-36 36 375O
8OO M24 915 14,2

125O M3O 935 19,4

98
SPECIAL PRODUCTS

SPECIAL PRODUCTS UPON CUSTOMER REQUEST

80
463
363

349

320 420

260

16
8
2
12
360

10,5

934
193
181

946

152 660 134

107 118
355
425

30
90

946
193

152 134

101
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INDOOR SCREWABLE BUSHING TECHNICAL DRAWING

(Um= 1kV)

- All dimensions are in mm.

SPECIAL PRODUCTS UPON CUSTOMER REQUEST

103
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NOTES

104
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ESTA TURKEY PT ESTAS PASIFIC

Hilal Mahallesi Paaky Caddesi No: 28 Kawasan Industri Jababeka Tahap 1
34791 Sancaktepe - STANBUL - TURKEY JL. JABABEKA IX A Blok P-2F Cikarang
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