Electrical safty in low voltage distribution systems up to 1 000 V a.c and 1 500 V d.c—Equipment for testing,measuring or monitoring of protective measures—Part 8:Insulation monitoring devices for IT systems
IDT IEC 61557-8:2007
全国电工仪器仪表标准化技术委员会(SAC/TC 104)
GB/T 18216的本部分规定了绝缘监控装置(IMD)的要求。绝缘监控装置不间断地监控不接地交流IT系统以及不接地直流IT系统的对地绝缘电阻，对于电气上接有直流电路的交流IT系统标称电压为交流1 000 V以下，不接地直流IT系统的标称电压为直流1 500 V以下，与测量方法无关。
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