Difference between revisions of "怎样考取低压电工证理论篇"
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怎样考取低压电工证理论篇
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== 辨异 ==
; 电流互感器
: 接地电阻测量仪主要由手摇发电机、(电流互感器)、电位器,以及检流计组成.
: 漏电断路器在被保护电路中有漏电或有人触电时,零序电流互感器就产生感应电流,经放大使脱扣器动作,从而切断电路.
: 钳形电流表是利用(电流互感器)的原理制造的.
; 电压互感器
: 1千伏以上的电容器组采用(电压互感器)接成三角形作为放电装置.
; 内阻
: 电压表 越大越好
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