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怎样考取低压电工证理论篇: Difference between revisions
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Revision as of 17:29, 19 August 2024
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Revision as of 08:35, 20 August 2024
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Line 41:
Line 41:
; Ω
; Ω
: 380V 电机,接地电阻绝缘小于 0.5Ω,则判断电机受潮
: I 类工具绝缘电阻不超过 2Ω
: 非高电阻率地区,避雷针接地电阻不大于 10Ω
: 非高电阻率地区,避雷针接地电阻不大于 10Ω
: I 类工具绝缘电阻不超过 2Ω
; V
; V