Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 1: General requirements (IEC 61557-1:2019); German version EN IEC 61557-1:2021
Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 1: General requirements (IEC 61557-1:2019); German version EN IEC 61557-1:2021
Draft Document - 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 1: General requirements (IEC 85/607/CD:2017)
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 1: General requirements (IEC 61557-1:2007); German version EN 61557-1:2007
Instrument transformers for 50 Hz, U<(Index)m> 0.72 kV to 52 kV - Part 9: Voltage Transformers U<(Index)m> = 12 kV and U<(Index)m> = 24 kV - Narrow design, main dimensions, indoor type
Direct acting indicating analogue electrical measuring instruments and their accessories - Part 1: Definitions and general requirements common to all parts (IEC 60051-1:2016); German version EN 60051-1:2017
Direct acting indicating analogue electrical measuring instruments and their accessories - Part 9: Recommended test methods (IEC 60051-9:2019); German version EN IEC 60051-9:2021