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ZW32-12 type outdoor VCB
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ZW32-12 type outdoor VCB
Detail

1.General

ZW32-12 Series outdoor high voltage vacuum circuit breaker is rated voltage 12kV, three phase AC 50Hz outdoor distribution equipment .mainly used to breaking closing power system load current ,overload current and short-circuit current. Applicable to substations and power distribution in industrial and mining enterprises for protection and control purposes, and frequent operation place for rural power .

The circuit breaker Small size, light weight, anti-condensation, maintenance and so on. Adapt to adverse weather conditions, and to teach filthy environment.

2. Service environment
a) Air temperature: Maximum temperature: +85℃; Minimum temperature:-45℃

b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .

c) Altitude above sea level: Maximum installation altitude:2500mor more higher.

d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.

e) No frequent violent shake

3. Mainly Technical parameters

No.

Item

Unit

Parameters

1

rated voltage

kV

12

2

rated frequency

Hz

50

3

rated current

A

630/1250

4

rated short-circuit breaking current

kA

20/25

5

rated peak value withstand current(peak)

kA

50/63

6

rated short time withstand current

kA

20/25

7

rated short-circuit closing current (peak)

kA

50/63

8

mechanical life

Times

10000

9

rated short-circuit breaking current breaking number

Times

30

10

power frequency withstand voltages(wet) (dry) inter-phase ,earth, fracture

kV

42/48

11

Lightning impulse withstand voltage (peak) inter-phase ,earth, fracture

kV

75/85

12

Secondary circuit 1min power frequency voltages

kV

2