- -55%
- New
IEC 61557-6 Ed. 1.0 b: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 6: Residual current devices (RCD) in TT and TN systemsstandard by International Electrotechnical Commission, 02/28/1997