PN HD 60364-4-442 : 2012现行
LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 4-442: PROTECTION FOR SAFETY - PROTECTION OF LOW-VOLTAGE INSTALLATIONS AGAINST TEMPORARY OVERVOLTAGES DUE TO EARTH FAULTS IN THE HIGH-VOLTAGE SYSTEM AND DUE TO FAULTS IN THE LOW VOLTAGE SYSTEM
出版：Polish Committee for Standardization
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