Outdoor high voltage vacuum circuit breaker ZW10-12

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Outdoor high voltage vacuum circuit breaker ZW10-12
Outdoor high voltage vacuum circuit breaker ZW10-12

Description

ZW10-12 outdoor high voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) for a period of 12kV, rated voltage of the three-phase ac 50 Hz outdoor distribution equipment, mainly used in site, the city network, railway, port and mine and power distribution system, especially suitable for outdoor overhead line, open and close of electric power system load current, overload current and short circuit current, switching and protection of power grids. 

 

Model and meanings

Main technical parameters

No

Item

Unit

Data

1

Rated voltage

kV

12

2

Rated current

A

630                         1250

3

Rated frequency

Hz

50

4

Rated short circuit breaking current

kA

12.5

16

20

5

Rated peak withstand current (peak)

kA

31.5

40

50

6

Rated short term withstand current (4s)

kA

12.5

16

20

7

Rated short circuit shut-off current (peak)

kA

31.5

40

50

8

Rated number of short circuit breaking current

Times

30

9

Mechanical life

Times

10000

10

Power frequency withstand voltage (1min)

kV

42

11

Lightning shock withstand voltage (peak)

kV

75

12

Withstand voltage power frequency of secondary loop tor 1min

kV

2

13

Weight

kg

150

 

Outline and mounting dimensions

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