I.S. EN 61557-3:1999被替代
Electrical Safety In Low Voltage Distribution Systems Up To 1 Kv A.c. And 1,5 Kv D.c. - Equipment For Testing, Measuring Or Monitoring Of Protective Measures - Loop Impedance
出版：National Standards Authority of Ireland
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基本信息
标准编号： I.S. EN 61557-3:1999
发布时间：1999/1/15 0:00:00
标准类别：Standard
出版单位：National Standards Authority of Ireland
标准页数：32
标准简介
Provides requirements for equipment for measuring the loop impedance between a phase conductor and the protective conductor or between a phase conductor and neutral or between two phase conductors by using the voltage drop when the circuit under test is loaded.
替代本标准的新标准
