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

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

Indoor current transformer bushing type TPOL-10 

 

 

 

Application

The transformers are intended for transmitting measuring information signal to measuring instruments, to protection and control devices, as well as for insulation of secondary connection circuits from high voltage in alternate current electric appliances for voltage class 10 kV with 50 or 60 Hz frequency.
The transformers for differential protection are delivered at the special order.
The transformers are intended for embedding in to factory-assembled switchgears and conductions.
The transformers are manufactured in climatic versions "У" (moderate) and "T" (tropical) according to the standard requirements of GOST 15150 location category 3 and are intended for usage under the following operating conditions:

  • ambient air temperature from minus 45°С to plus 40°С for "У3" version and from minus 10°С to plus 45°С for "T3" version;
  • environment should be non-explosive, without dust, chemically active gases and steams in concentrations that are likely to destroy metal or insulation;
  • mounting in any position.

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

Table 1. Technical Data 

Parameter

Normal value

Rated voltage, kV

10 or 11

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

Rated secondary current, A

1; 5

Rated alternate current frequency, Hz

50 or 60

Number of secondary windings

2 or 3

Rated secondary burden at cos φ = 0,8, VA:

 

winding for measurement

up to 30*

winding for protection

15

Accuracy class of secondary winding:

.

for measurement

0,2; 0,2S; 0,5S; 0,5; 1

for protection

10Р**

Short-circuit current ratio of the winding for protection, at the rated primary current, A:

 

20- 400 А

10

600, 1000 А

16

800 А

20

1500 А

23

2000 А

19

Three-second thermal current, kA, at the rated primary current, A:

 

20, 30

38

40, 100, 150, 300, 400

45

50, 75, 80, 200

40

600, 800

32

1000, 1500

27

2000 А

20

Dynamic current, kA, at the rated current, A

 

20, 30

96

40, 100, 150, 300, 400

114

50, 75, 80, 200

102

600, 800

81,5

1000

68,7

1500

66,7

2000

50

Test voltage, kV:

.

 of industrial frequency, one-minute

42

of lighting impulse

75

Mass, kg, max

20

*) Required power should be specified in the order
**) On request may be supplied with accuracy class 5Р 

Table 2. Dimensions 

Type

Rated primary current, A

Dimensions, mm

Pic.

Mass, kg

S

d

H

B

C

h

TPOL-10;
TPOL-10-2*

300, 400, 600
800
1000
1500, 2000

5 or 6,5
9,5
11,5
18

9
11
11
13

32

250

413

-

1

20

20-200

6

11

40

2

TPOL-10-1

300-1500

-

32

-

3

TPOL-10-3

20-200

6

11

140

388

513

26

4

22

300-1500

See. TPOL-10;
TPOL-10-2

70

290

453

42

General view of transformer (drawing)