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 11:50, 20 August 2024

51 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
# 螺旋式熔断器的电源进线应接在下端
 
== 术语 ==
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