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 (view source)

Revision as of 11:44, 20 August 2024

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→‎理论
* 手持电动工具有两种分类方式：按触电保护方式分类<del>按工作电压分类</del>：I类，II类，III类；防潮程度分类：普通工具、防溅工具、水密工具
* 指针式万用表，一般不测交流电流
* 电动式时间继电器的延时时间不受电源电压波动及环境温度变化的影响.
 
== 术语 ==
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