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35平方的线,三相四线需要多大的剩余电流互感器?
35平方的线,三相四线需要多大的剩余电流互感器?
2025-03-15 14:40:27
推荐回答(2个)
回答1:
35平方的铜线 发热电流 139A,
用 125A 的
回答2:
250/5
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