IEC 61557-11 Ed. 1.0 b:2009
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 11: Effectiveness of residual current monitors (RCMs) type A and type B in TT, TN and IT systems
standard by International Electrotechnical Commission, 01/12/2009
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