
ELECTRICAL INSTALLATIONS OF BUILDINGS - PART 4: PROTECTION FOR SAFETY - CHAPTER 44: PROTECTION AGAINST OVERVOLTAGES - SECTION 442: PROTECTION OF LOW-VOLTAGE INSTALLATIONS AGAINST FAULTS BETWEEN HIGH-VOLTAGE SYSTEMS AND EARTH
出版:European Committee for Standards - Electrical

專(zhuān)家解讀視頻
Gives requirements for the safety of persons and equipment in the low-voltage installation in the event of a fault between the high-voltage system and earth in the transformer sub-station which supplies the low-voltage installation.