
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:Asociacion Espanola de Normalizacion

专家解读视频
2013 [13/03/2013]
Supersedes UNE 20460-4-442. (03/2013)
HD 60364-4-442:2012 - Identical
IEC 60364-4-442 : 1.2 - Identical
HD 60364-4-442 : 2012 - Identical
IEC 60364-4-442 : 1.2 - Identical