IEC 61557-4 Ed. 2.0现行
Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of protective measures Part 4: Resistance of earth connection and equipotential bonding
出版：International Electrotechnical Committee
专家解读视频
This part of IEC 61557 specifies the requirements applicable to equipment for measuring the resistance of earth conductors, protective earth conductors and conductors for equipotential bonding, including their connections and terminals, with an indication of the measured value or indication of limits. This second edition cancels and replaces the first edition published in 1997. This edition constitutes a minor revision.
GOST R IEC 61557-4:2007 - Identical
OVE/ONORM EN 61557-4:2008 - Identical
PN EN 61557-4:2007 - Identical
VDE 0413-4:2007 - Identical
BS EN 61557-4:2007 - Identical
NEN EN IEC 61557-4:2007 - Identical
NF EN 61557-4:2007 - Identical
I.S. EN 61557-4:2007 - Identical
CEI EN 61557-4 Ed. 2 (2007) - Identical
SN EN 61557-4:1997 - Identical
DIN EN 61557-4 (2007-12) - Identical
CEI EN 61557-4 Ed. 2 (2008) - Identical
UNE EN 61557-4:2007 - Identical
ONORM OVE EN 61557-4:1997 - Identical
SS EN 61557-4 Ed. 2 (2007) - Identical
