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双侧电源线路的瞬时电流速断保护为提高灵敏性,方向元件应装在

单选题
2021-09-01 20:45
A、动作电流大的一侧
B、动作电流小的一侧
C、两侧
D、装在那侧都行
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正确答案
B

试题解析

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双侧电源线路的瞬时电流速断保护为提高灵敏性,方向元件应装在
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输出继电器(OR)通过一对()触点将PLC的控制信号传递给负载。
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