
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:National Standards Authority of Ireland

专家解读视频
Defines the requirements applying to equipment for measuring the loop impedance between a phase conductor and the protective conductor or between a phase conductor and neutral or between two phase conductors by using the voltage drop when the circuit under test is loaded.
SS EN 61557-3 Ed. 2 (2007) - Identical
NF EN 61557-3:2007 - Identical
NBN EN 61557-3:2007 - Identical
IEC 61557-3 Ed. 2.0 - Identical
DIN EN 61557-3 (1998-05) - Identical
BS EN 61557-3:2007 - Identical
SN EN 61557-3:1997 - Identical
IEC 61557-3 : 2.0 - Identical
NF EN 61557-3 : 2007 - Identical
NBN EN 61557-3 : 2007 - Identical
EN 61557-3 : 2007 - Identical
SN EN 61557-3 : 1997 - Identical
UNE EN 61557-3 : 2007 - Identical
DIN EN 61557-3 : 2008 - Identical
BS EN 61557-3 : 2007 - Identical
UNE EN 61557-3 : 2007 - Identical
BS EN 61557-3 : 2007 - Identical
DIN EN 61557-3 : 2008 - Identical
NF EN 61557-3 : 2007 - Identical
NBN EN 61557-3 : 2007 - Identical
SN EN 61557-3 : 1997 - Identical
DIN EN 61557-3:2008 - Identical
UNE EN 61557-3:2007 - Identical
DIN EN 61557-3 (2008-02) - Identical