Power installations exceeding 1 kV a.c. - Part 1: Common rules (IEC 61936-1:2010, modified + Cor.:2011 + A1:2014); German version EN 61936-1:2010 + AC:2011 + AC:2013 + A1:2014
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 13: Hand-held and hand-manipulated current clamps and sensors for measurement of leakage currents in electrical distribution systems (IEC 61557-13:2011); German version EN 61557-13:2011