低压断路器脱扣器整定电流选定后,脱扣器的灵敏系数校验应达到(Hh为脱扣器整定电流;r为电动机端部或MCCM线上的最小短路电流)。A.I/IZ>1.2;...

作者: rantiku 人气: - 评论: 0
问题 低压断路器脱扣器整定电流选定后,脱扣器的灵敏系数校验应达到(Hh为脱扣器整定电流;r为电动机端部或MCCM线上的最小短路电流)。
选项 A.I/IZ>1.2; B.I/IZ>1.5; C.I/Iz>l.8; D.I/Iz>2.0。
答案 B
解析

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