SS EN 61557-4 Ed. 2 (2007)现行
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 - Part 4: Resistance Of Earth Connection And Equipotential Bonding
出版：Standardiserings-Kommissionen I Sverige
专家解读视频
Defines the requirements applying to equipment for measurement of the resistance with an indication of the measured value, or of limits for the purpose of measurement of the resistance of earth conductors, protective earth conductors and conductors for equipotential bonding. Includes their connections and terminals.
1998 Edition is still active. (08/2007)
DIN EN 61557-4:2007 - Identical
SN EN 61557-4:1997 - Identical
BS EN 61557-4:2007 - Identical
DIN EN 61557-4 (2007-12) - Identical
IEC 61557-4 Ed. 2.0 - Identical
NBN EN 61557-4:2007 - Identical
NF EN 61557-4:2007 - Identical
I.S. EN 61557-4:2007 - Identical
UNE EN 61557-4:2007 - Identical
