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NS塑壳断路器的OF、SD、SDE、SDV有何区别?

问答题
2021-08-31 02:53
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正确答案

OF(开/关):
指示断路器主触头的实际分合位置。
SD(自动脱扣指示):
包含分励(MX)、欠压(MN)和各种故障保护脱扣。
SDE(故障脱扣指示):
仅指示各种故障的保护动作脱扣,不含MX、MN的动作。
SDV(Vigi故障指示):
仅反映Vigi模块的动作。


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