Indoor current transformers bushing type ТПОЛ-10М (TPOL-10M)

Indoor current transformers bushing type ТПОЛ-10М (TPOL-10M)

Current transformer TPOL-10-MDescription

Transformers are intended for transfer of measuring information signal to measuring instruments, to protection and control units, as well as for insulation of auxiliary circuits from high voltage in electrical equipment of altering current with frequency 50 or 60 Hz in voltage class up to 10 kV inclusive.
Transformers for differential protection are supplied at specific order.
Transformers are intended for installation in factory-assembled switchgears and conductions.
Transformers are manufactured according to GOST 15150 climatic version "Y" location category 2 and are intended for usage under the following operating conditions:

  • environment should be non-explosive, without dust, chemically active gases and steams in concentrations that are likely to destroy metal or insulation;
  • mounting position – random.

Transformers are supplied with transparent covers for separate sealing of secondary winding tappings (example of sealing).

Table 1. Main technical data of transformer TPOL-10M

Parameter

Value

Rated voltage, kV

10

Maximum operating voltage, kV

12

Rated primary current, A

20; 30; 40; 50; 75; 80; 100; 150; 200; 300; 400;
600; 800; 1000; 1500; 2000; 2500; 3000

Rated secondary current, A

5 or 1

Rated frequency of altering current, Hz

50

Number of secondary winding

2, 3 or 4

Rated secondary burden at power factor cos φ= 0,8,VA
of secondary winding for measurement
of secondary winding for protection


1-30 (10)*
1-30 (15)*

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


0,2; 0,2S; 0,5; 0,5S
5Р; 10Р

 

Parameter

Value


Short-circuit current ratio of secondary winding for protection*, no less than, at the rated primary current:

20 - 400
600; 1000
800
1500
2000
2500-3000

Number of secondary windings

2; 3

4



10
16
20
23
19
14

10

Instrument security factor of secondary winding for measurement**, no more:
in accuracy classes 0,5; 1 at the rated primary current, A:

20; 40; 80; 200; 400
30; 50; 75; 100; 150; 300
600
800
1000
1500
2000

in accuracy classes 0,2S; 0,2; 0,5S

 



12
10
16
15
17
20
24

10

 



16
13
13
16
13
16
16

10

Three-second thermal current (ratio) at the rated primary current, A:

20; 40; 80; 200
30; 50;75
100; 150
300; 400
600 – 2000
2500
3000

50
46
56
42
33
60
50

Dynamic current (ratio) at the rated primary current, A:

20; 30
40; 100; 150; 300; 400
50; 75; 80; 200
600; 800
1000
1500
2000
2500
3000

96
114
102
81,5
68,7
66,7
50
170
145

Notes
1* The value of maximum multiplicity of secondary winding for protection is given for the rated secondary burden 15 VA
2** The value of rated safety factor of instruments at secondary winding for measurement is given for the rated secondary burden 10 VA
3 Values of secondary burden, secondary current, maximum multiplicity of secondary winding for protection, safety factor of instruments at secondary winding for measurement, accuracy classes, number of windings are to be specified in the order.
4 Transformers can be supplied with secondary tapping from flexible multifilament wire. The length of tapping should be specified in the order. 

Table 2. Dimensions and weight 

Type

Number of windings

Dimensions

Rated primary current, A

Weight, kg

Pic.

H

B

C

S

TPOL-10M-2

2

60

264

414

6

20-200

17 max

1

250

6,5

300-600

6

9,5

800

7

11,5

1000

18

1500-2000

464

20

2500; 3000

TPOL-10М-2V

See TPOL-10M-2

See TPOL-10M-2

20-3000

2

TPOL-10М-2P

3

TPOL-10М-2VP

4

TPOL-10М-2R

 

300-3000

8

TPOL-10М-2RP

 

8,3

TPOL-10М-3(4)

3, 4

110

344

494

6

20-200

25 max

5, 9

TPOL-10М-3(4)

TPOL-10М-3(4)V

80

290

454

7

300-600

5, 6, 9

9,5

800

5, 7, 9

11,5

1000

18

1500-2000

504

20

2500-3000

10

TPOL-10М-3(4)R

-

-

-

5, 8, 9

Notes:
V - primary tapping are placed vertically relative tocontact plate of secondary windings
P - with variable tranformation ratio
R - transformer is connected to current-currying bus-bar through tapped mouth
Transformers may be manufactured with secondary tappings from flexible multicore cable. The length of secondary tappings should be specified in the order.
* - for current transformers type TPOL-10M-3(4)V

General view of transformer (drawing)