试题与答案

电压互感器二次侧某相熔丝并联的电容器，其容量应怎样选择？

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题型：问答题 简答题

题目：

电压互感器二次侧某相熔丝并联的电容器，其容量应怎样选择？

答案：

参考答案：

应按电压互感器在带最大负荷下三相熔丝均断开以及在带最小负荷下并联电容器的一相熔丝断开时，电压断相闭锁继电器线圈上的电压不小于其动作电压的两倍左右来选择并联电容器的容量，以保证电压断相闭锁继电器在各种运行情况下均能可靠动作。

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