Indoor current tarnsformers support and bushing type ТПЛК-10 (TPLK-10)

Indoor current tarnsformers support and bushing type ТПЛК-10 (TPLK-10)

Indoor current transformers TPLK-10Description

The transformers are intended for transmitting the measuring information signal to measuring instruments and to protection, automatic control or/and signaling devices in the alternate current devices with the frequency of 50, 60 Hz at the rated voltage of 10kV. Transformers for differential protection are delivered at the special order.
The transformers are designed for installation in factory-assembled switchgears (KRU) type KR-10/31.5.
The transformers are manufactured in compliance with the standard requirements of GOST 15150 in design version "Y" (moderate) and "T" (tropical) location category 3 and are intended for usage under the following operating conditions:

maximum ambient air temperature considering the overheating inside KRU is plus 50 °C for "Y" design versions and plus 55 °C for "T" version; minimum ambient air temperature is 228K (minus 45 °C); altitude above sea level is not higher than 1000m; environment should be non-explosive, without corrosive steams in concentrations that are likely to destroy metal or insulation (atmosphere type II as to GOST 15150); mounting in any position.

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

The transformer is patented
Patent Certificate No 6272.

Table 1. Technical Data 

Parameter

Value

Rated primary current, A

10, 15, 30, 50, 100, 150, 200, 300, 400, 600, 800, 1000, 1500, 2000

Rated voltage class, kV

10, 11*

Maximum operating voltage, kV

12

Frequency of alternate current, Hz

50 or 60

Rated secondary current, A

1; 5

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

 

of the winding for protection

from 1 up to 20 (15)

of the winding for measurement

from 1 up to 30 (10)

Mass max, kg

48

Accuracy class:

winding for protection
winding for measurement

 

0,2S; 0,5S; 0,5; 0,2
10Р**

Maximum multiplicity of the winding for protection

from 12 up to 20

Dynamic current, (kA) at given primary current,A:

 

10 А

2,47

15 А

3,7

30 А

7,4

50 А

14,8

100-600 А

74,5

800 А

94,5

1000 А

118

1500 А

177

2000 A

189

Thermal current (kA), during three seconds, at given primary current, A:

 

10 А

0,47

15 А

0,71

30 А

1,42

50 А

2,36

100 А

4,72

150 А

7,1

200 А

9,45

300 А

14,1

400 А

18,9

600 А

28,3

800 А

37,8

1000 А

47,2

1500 А

70,8

2000 A

74

Test voltage, kV:

 

of industrial frequency during one minute

42

of full lighting impulce

75

Notes:

1. For transformers with primary currents up to 300A three-second thermal stability currents are given for secondary windings closed on nominal burden.

2. Accuracy class should be specified in the order.

* On demand may be manufactured with 3 secondary windings (TPLK-10-1).

** On demand may be manufactured with 5P accuracy class.

General view of transformer (drawing)