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电表为什么加互感器
更新时间: 2020-11-07 00:00:00  

电表加互感器是为了防止烧坏电表。一般小于100A的不需要加互感器,而大于100A加了互感器之后相当于把大电流变成小电流后再进入电表,这个就不会烧坏电表。加了互感器后读取电表数时应乘以互感器相应的倍数。

关键词: 电表 为什么 互感器

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