Outdoor current transformers support type ТОЛ-35-III-IV (TOL-35-III-IV)

Outdoor current transformers support type ТОЛ-35-III-IV (TOL-35-III-IV)

Outdoor current transformers TOL-35Description

The transformers are intended for transmitting signal from protection, automated, signal and control units in alternate current electrical circuits for voltage class up to 35 kV with 50 or 60 Hz frequency .

The transformers are intended for embedding in open factory-assembled switchgears and other electrical appliances of 35 kV voltage class, and are complete products.

The transformers are manufactured in climatic versions "УХЛ" (outside mounting in moderate cold ) and "T" (tropical) according to the standard requirements of GOST 15150 location category 1.

Creepage distance III as to GOST 9920. 

Table 1. Technical data

 Parameter

Normal value

Rated voltage, kV

 35

Maximum rated voltage, kV

 40,5

AC current frequency, Hz

 50

Number of secondary windings

 1, 2 or 3

Accuracy class:
of secondary winding for measurement
of secondary winding for protection


0,2S; 0,2; 0,5S; 0,5; 1; 3
10; 5P; 10Р

Rated primary current, A

from 100 up to 2000

Table 2.

Design version

Rated primary current, A

H1, mm

H2, mm

Weight, kg, max

S, mm

TOL-35 III-IV-1;

TOL-35 III-IV-3;

TOL-35 III-IV-5;

TOL-35 III-IV-7;

100-800

593

731

85

4,5

1000-1200

7

1500

8,5

2000

15

TOL-35 III-IV-2;

TOL-35 III-IV-4;

TOL-35 III-IV-6;

TOL-35 III-IV-8;

100-800

1028

1166

110

4,5

1000-1200

7

1500

8,5

2000

15

Table 3.

Type

 Design version

Rated primary current, A

Maximum operating primary current, A 

Rated secondary current, A

Secondary burden at cos φ = 0,8 in accuracy class, VA

 Three-seconds thermal current, kA

 Dynamic  current, kA

Short-circuit current ratio

 0,5

1 

3

10 

10Р 

TOL-35 III-IV-1; 2

 300/5*

100
150
200
 300 

100
160
200
320

5

-
-
-
-

-
-
-
-

-
-
-
-

-
-
-
-

10
20
20
30 

25

64

7
6
7
 7 

 600/5*

200
300
400
600

200
320
400
630

-
-
-
-

-
-
-
-

-
-
-

-
-
-

20
30
30
30

7
7
10
14

 1200/5

750
800
1000
1200

800
800
1000
1250

-
-
-
-

-
-
-

-
-
 - 
-

-
-
-

30
30
30
30

11
12
14
15

 1500/5

800
1000
1200
1500

800
1000
1250
1600

-
-
-
-

-
-
 - 
-

-
-
 - 
-

-
-
 - 

30
30
30
30

12
14
15
17 

TOL-35 III-IV-3; 4
300/5* 100
150
200
 300
100
160
200
320
5 -
-
-
-
-
-
-
-
-
-
-
30
20
30
40
-
-
-
-
-
25 64 -
-
-
7
600/5* 200
300
400
600
200
320
400
630
-
-
-
-
-
-
-
30
-
30
40
-
40
-
-
-
-
-
-
-
-
7
8
14
 1200/5 750
800
1000
1200
800
800
1000
1250
30
30
30
30
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
11
12
14
15
1500/5 800
1000
1200
1500
800
1000
1250
1600
30
30
30
30
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
12
14
15
17

On demand we may consider manufacturing of transformers with dofferent technical data.
* Thermal current for the given type is shown for secondary winding loaded with nominal burden.

Table 4

Type

Rated primary current, A

Rated secondary current, A

Rated secondary burden of the windings for measurement and protection at cos φ=0,8, VA

Short-circuit current of the winding for protection, no less

Dynamic current, kA

Three-second thermal current, kA

measurement

protection

ТОЛ-35 III-IV-5; 6
two windings

300

5

20

15

17

80

10

31*

400

5

30

15

20

13

500

5

30

20

20

17

600

5

30

30

16

20

750

5

18

25

800

5

19

27

1000*

5

11

128

34

50*

1200*

5

13

40

1500*

5

14

50

2000

5

13

154

60

31*

ТОЛ-35 III-IV-7; 8
three windings

300

5

20

15

9

80

10

400

5

30

15

11

13

500

5

30

20

11

17

600*

5

30

30

8

20

750*

5

10

25

800*

5

11

27

1000*

5

6

128

34

50*

1200*

5

7

40

1500*

5

8

50

2000

5

8

154

60

* Thermal current for the given type is shown for secondary winding loaded with nominal burden.
Accuracy class of the winding for measurement is 0.5S for primary currents of 300A, 400A and 500A; 0.2S for other types.
On demand we may consider manufacturing of transformers with dofferent technical data.
Instrument security factor of the winding for measurement at the rated secondary burden does not exceed 10.

General view of transformer (drawing)