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负序电流整定往往用模拟单相接地短路的方法,因为单相接地短路时负序电流分量为短路电流的

单选题
2021-09-01 20:45
A、3倍
B、根号3倍
C、3分之1倍
D、都不对
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正确答案
C

试题解析

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负序电流整定往往用模拟单相接地短路的方法,因为单相接地短路时负序电流分量为短路电流的
在正常运行时候,接入负序电流继电器的电流互感器的一相断线,当负荷电流的数值达到()倍负序电流的整定值时,负序电流继电器才动作
过电流继电器动作电流的整定:保护单台电动机的过电流继电器的整定电流可按()计算。
模拟两相短路从负序电流继电器AB端子通入电流此时继电器的动作电流是负序相电流的()倍
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