DIN EN 61557-4 (2007-12)现行
Electrical Safety In Low Voltage Distribution Systems Up To 1000 V A.c. And 1500 V D.c. - Equipment For Testing, Measuring Or Monitoring Of Protective Measures - Part 4: Resistance Of Earth Connection And Equipotential Bonding
出版：German Institute for Standardisation (Deutsches Institut für Normung)
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.
Supersedes DIN EN 50197-4. (12/2001) Supersedes DIN IEC 61557-4. Applies in conjunction with DIN EN 61557-1 issue 12-2007. (12/2007)
NF EN 61557-4:2007 - Identical
NBN EN 61557-4:2007 - Identical
I.S. EN 61557-4:2007 - Identical
SS EN 61557-4 Ed. 2 (2007) - Identical
UNE EN 61557-4:2007 - Identical
SN EN 61557-4:1997 - Identical
BS EN 61557-4:2007 - Identical
IEC 61557-4 Ed. 2.0 - Identical
