DIN EN 61557-3 (2008-02)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 3: Loop Impedance
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 loop impedance between a phase and protective conductor, or between a phase conductor and neutral or between two phase conductors by means of the voltage drop when the circuit being tested is loaded.
Supersedes DIN EN 50197-3. (12/2001) Supersedes DIN IEC 61557-3. Applies in conjunction with DIN EN 61557-1 issue 12-2007. (02/2008)
VDE 0413-3:2008 - Identical
SN EN 61557-3:1997 - Identical
BS EN 61557-3:2007 - Identical
IEC 61557-3 Ed. 2.0 - Identical
NBN EN 61557-3:2007 - Identical
NF EN 61557-3:2007 - Identical
I.S. EN 61557-3:2007 - Identical
SS EN 61557-3 Ed. 2 (2007) - Identical
UNE EN 61557-3:2007 - Identical
