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
NORMA vydána dne 13.3.2013
Designation standards: UNE-HD 60364-4-442:2013
Publication date standards: 13.3.2013
The number of pages: 66
Approximate weight : 198 g (0.44 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE