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Application of 11KV Vacuum Circuit Breaker


The vacuum circuit breaker is equipped with one integrated current transformer per pole. The current transformer has a ratio of 600 A:5 A. It is for protection purposes and optimized for operation with the controller.


Technical parameters of 11KV Vacuum Circuit Breaker


Products Type

ZW32-12

Maximum System Voltage

12kV

Rated Continuous Current

630A

Rated Frequency

50/60Hz

Short Time Withstand Current

20kA/1sec

Mainly Active Load Current

630A

Number of Load-break Operations

30

Short-circuit Making Current (peak)

50kA

Number of Making Operations

5 times

Cable Charging Current

25A

Line Charging Current

1.5A

Closed Loop Circuit Current

630A

Transformer Magnetizing Current

22A

Wet Condition-10sec Ph- Ph-Eth, Across Interrupters

45kV

DryCondition-1min,Ph- Ph, Phase to Earth

42kV

Dry Condition - 1 min AcrossInterrupter

48kV

Phase to Phase, Phase to Earth

75kV

Across Interrupter

85kV

Internal Arc Test

20kA /0.1 sec

Arc Extinction Medium

vacuum

Insulation Medium

vacuum

Creepage Distance (Silicon)

780mm

Dry arcing distance

≥200mm

IP Level

67

Closing/Opening Time

<1sec

Mechanical Operations (Guaranteed)

10000times

Operating Temperature (*Manual Type)

-25~+70℃



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