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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: 600V 以下，二氧化碳灭火器
: 10kV 或 35kV，只能使用干粉灭火器
; 接法
: 三角形 相电压等于相电压，线电流={{math| \sqrt{3} }}相电流
: 星形  线电压={{math| \sqrt{3} }}相电压，线电流=相电流
== 理论 ==
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