IEC 61557-13 Ed. 1.0 b:2011
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 13: Hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electrical distribution system
standard by International Electrotechnical Commission, 07/08/2011
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