IEC 61557-4:1997 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
This part of GB/T 18216 specifies the requirements for measuring equipment for measuring the resistance of earth conductors, protective earth conductors and equipotential bonding conductors including connections and terminals, indicated by measured values or indicated by limit values.
IEC 61557-4:1997 history
0000 IEC 61557-4:2019 RLV
2007IEC 61557-4:2007 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
1997IEC 61557-4:1997 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