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 11:49, 20 August 2024

117 bytes added ,  20 August
→‎理论
# 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
# 额定电压为380V的熔断器可用在220V的线路中
# 静电现象是很普遍的电现象,其危害不小,固体静电可达200kV以上,人体静电也可达10KV以上
 
== 术语 ==
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