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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* RCD:剩余电流动作保护器。假设 RCD 为 5,漏电值小于 5,就认为是正常泄漏;漏电值大于 5,就认为发生了事故,自动切断或报警。RCD 值为工作时的最小电流值。
* SELV:(safetyextra-lowvoltagecircuit) 电路,安全特低电压电路。经特殊设计,一般 SELV 设备上带电不会超过安全电压。
== 判断 ==
* 设备漏电,应迅速用绝缘棒拉开隔离开关断开电源,再用二氧化碳灭火器或干粉灭火器灭火。错:应该先断开断路器
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