China Factory for Mini Led Cabinet Light - TZN12(68)-12 series TZN12(68)-40.5 series Indoor high voltage vacuum circuit breaker – TENPRO

Product features

·Strengthen insulation

TZN12 (68)-12 series

TZN12 (68)-40.5 series

Indoor high voltage vacuum circuit breaker

Outline

TZN12 (68) -12 series vacuum circuit breakers are indoor high voltage switchgear with rated voltage of 12KV three-phase AC of 50Hz. It is the product that introducing of German Siemens technology. The operating mechanism of the circuit breaker is spring energy storage type. It can be operated by AC or DC, and can also be operated manually. It is suitable for the control or protection of transmission and distribution systems like power plants and substations, especially in places where important loads are cut off and frequently changed.

TZN12 (68)-40.5 vacuum circuit breaker can match the main switch of TKYN-40.5, TKYN1-35, and TGBC-35 series switchgear. The circuit breaker is mounted on the handcart in the switchgear as a movable unit. Meanwhile, the circuit breaker can also be installed in the TXGN-40.5 switchgear for fixed installation. The circuit breaker body is integrated with the switch: special spring energy storage operating mechanism, and can be operated by AC, DC energy storage or manual operation.

Main technical parameters

Serial No.

Name

Unit

Data

I

II

III

I

II

1

rated voltage

KA

12

12

12

40.5

40.5

2

rated current

A

1250

1600

2000

1600

2000

3

rated short-circuit on-off current

KA

31.5

31.5

31.5

25

31.5

4

dynamic stable current (peak)

KA

100

100

100

 

 

5

4s thermal stability current (50KA is 3s)

KA

31.5

31.5

31.5

25

25

6

rated short-circuit closing current (peak)

KA

100

100

100

80

80

7

rated short circuit current breaking times

times

50

20

8

rated operation sequence

 

opening0.3s-closing and opening-180s-closing and opening

9

rated lightning impulse withstand voltage (full wave)

kV

75

185

10

rated short-time frequency withstand voltage (1min)

kV

42

95

11

closing time

ms

≤75

50~85

12

opening time

ms

≤60(50)

40~85

13

mechanical life

times

20000(1~1V)

10000(V~X)

120000

14

rated current breaking times

times

20000(1~1V)

10000(V~X)

20

15

energy storage motor power

W

275

20

16

rated voltage of energy storage motor

V

110, 220

220, 110

17

energy storage time

S

≤15

≤15

18

closing electromagnet rated voltage

V

110, 220

220, 110

19

opening electromagnet rated voltage

V

110, 220

220, 110

20

rated voltage of energy storage type shunt release

V

110, 220

220, 110

21

closing interlock rated voltage

V

110, 220

220, 110

22

voltage loss release rated voltage

V

110, 220

220, 110

23

voltage loss release rated voltage

A

5

5

24

auxiliary switch rated current

A

AC10 DC 10

DC 10

25

contact travel

mm

11±1

11±1

20±2

26

over-travel of the contact

mm

8±2

8±2

5±1

27

closing speed

m/s

0.6-1.8

0.8-1.4

28

opening speed

m/s

1.0-1.8

1.1-1.8

29

contact closing and tripping time

ms

≤2

≤3

30

interphase center distance

mm

210 1.5(280±1.5)

350±1.5

31

three – phase contact opening

synchronization

ms

≤2

≤2

32

Per phase loop resistance

μΩ

≤35

≤45

 

 


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