
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:International Electrotechnical Committee

專家解讀視頻
Specifies requirements for equipment for measuring the resistance of earth conductors, protective earth conductors and conductors for equipotential bonding including their connections and terminals.
BS EN 61557-4:1997 - Identical