Indoor current transformers bus-bar type ТЛШ-10 (TLSH-10)


Indoor current transformers bus-bar type ТЛШ-10 (TLSH-10)

Indoor current transformers bus-bar type TLSH-10Description

The transformers are intended for transmitting measuring information signal to measuring instruments and to protection, automatic control and signaling devices as well as for insulation of secondary current 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 designed for installation in factory-assembled switch-gears and in conductions.
The transformers are manufactured in climatic design 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 is from minus 45 °C to plus 55 °C for "У" version and from minus 10 °C to plus 60 °C for "T" version;
  • air humidity is 98% at 25 °C;
  • 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);
  • avoid solar radiation and direct water ingress;
  • mounting in any position.

The transformer is supplied with protective transparent cover for separate sealing of secondary winding's tappings (example of sealing).

Bus-bar is to be connected compulsory to transformer's tapping with "Ш" marking.

The transformer is patented
Patent Certificate № 6467, Patent Publication № 50675. 

Table 1. Technical data

Parameter
Value
Rated primary current, A
1000
1500
2000
3000
4000
5000
6000
Rated voltage, kV 10 or 11
Maximum operating voltage, kV 12
Rated frequency, Hz 50 or 60
Rated secondary current, A 1; 5
Number of secondary windings 3 or 4 2 3 2 3 2

Accuracy class of secondary winding:    for measurement

                                                      for protection

0,2; 0,2S; 0,5; 0,5S
5P; 10P
Rated burden of secoondary winding at cos φ = 0,8, VA,
for measurement                                      in accuracy class 0,2; 0,2S; 0,5; 0,5S
20

for protection:                                         in accuracy class 5Р

                                                            in accuracy class 10Р

30 20
30
Short-circuit current ratio of secondary windings for protection, no less than:
                                                                in accuracy class 5Р
                                                                in accuracy class 10Р
8 11 10,5 15
10
18


11


10
18

8
12
Three-second thermal current, kA 31,5 140 175
Instrument security factor of secondary windings for measurement, no more:                                                                 in accuracy class 0,5
                                                                in accuracy class 0,2; 0,5S
                                                                in accuracy class 0,2S

11
4
4

14
5
5

16
16
6
 19 14 10 14
Test voltage, kV:                              of inductrial frequency, during one minute
                                                     of full lighting impulse
42
75

Table 2.

Type of transformer

Rated primary current, A

Dimensions, mm Weight,
kg, max

Pic.

A B C D E F H K L

M

TLSH-10


TLSH-10-2*

1000, 1500, 2000, 3000

280 230 290 262 25 39

204

38

102

130

26

1

4000, 5000, 6000

320

270

330

310

30

80

210

130

150

31
TLSH-10-1
TLSH-10-2*

1000, 1500, 2000, 3000

4000

280 320 230 270 290  330 262 310 25 30

39

80

235

210

 70  38

102

130

130

150

2

3

TLSH-10-2*
TLSH-10-5

1000-3000

280 230 290 262 25

39

300

 130

102

130

43

4

Notes:
*) TLSH-10-2 are manufactured with secondary tappings from flexible multicore cable with length of 4500 mm.

Table 3. Main technical data of current transformers TLSH-10-6 (7)

Parameter

Transformer type

TLSH-10-6.1-4
TLSH-10-7.1-4
TLSH-10-6.5-4*
TLSH-10-7.5-4*

TLSH-10-6.1-5
TLSH-10-7.1-5

TLSH-10-6.1-4
TLSH-10-7.1-4

TLSH-10-6.1-5
TLSH-10-7.1-5

TLSH-10-6.1-6
TLSH-10-7.1-6

Rated primary current, A

1000

1500;
2000

2500;3000

4000; 5000

Rated voltage, kV

10

Maximum operating voltage, kV

12

AC rated frequency, Hz

50

Rated secondary current, A

5

Number of secondary windings

4

4

5

4

5

6

Accuracy class of secondary windings:

       for measurement

       for protection

 

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

5P; 10P

Rated secondary burden, VA, of secondary windings:
for measurement in accuracy class:

 

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

at cos φ = 1

1; 2; 2,5

at cos φ = 0,8 (active-inductive load)

20

       for protection in accuracy class:

 

at cos φ = 0,8 (active-inductive load)

30

20

10Р

30

Short-circuit current ratio of secondary winding for protection, no less then, in accuracy class:

 

8

11

15

10

11

8

10Р

18

Thermal current, 3 sec., kA, a rated primary current, kA

1000, 1500, 2000, 2500, 3000

4000

5000

 

 50

140

175

Instrument security of secondary winding for measurement, no more than, in accuracy class:

 

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

10

14

10

0,5

10

14

Weight max, kg

52

Notes - * TLSH-10-6.5-4(5;6), TLSH-10-7.5-4(5;6) are produced with flexible secondary tapping 4500 mm long.

Lable example:
TLSH-10-6.1-4
6 – transformer type with crescent like window (6) or round window (7)
1 – basic construction type.
4 – number opf secondary windings.

General view of transformers (drawing)

General view of transformers TLSH-10-6 (7) (drawing)