IEC 61557-3 : 2.0已作废
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：International Electrotechnical Committee
专家解读视频
Describes the requirements applicable 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.
I.S. EN 61557-3:2007 - Identical
SN EN 61557-3 : 1997 - Identical
NEN EN IEC 61557-3 : 2007 - Identical
SAC GB/T 18216.3 : 2012 - Identical
GOST R IEC 61557-3 : 2006 - Identical
NF EN 61557-3 : 2007 - Identical
GOST IEC 61557-3 : 2013 - Identical
DIN EN 61557-3 : 2008 - Identical
CEI EN 61557-3 : 2008 - Identical
BS EN 61557-3 : 2007 - Identical
DS EN 61557-3 : 2007 - Identical
PN EN 61557-3 : 2007 - Identical
VDE 0413-3 : 2008 - Identical
UNE EN 61557-3 : 2007 - Identical
