DIN EN IEC 61557-7 VDE 0413-7:2022-12

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 7: Phase sequence

(IEC 61557-7:2019); German version EN IEC 61557-7:2022
Class/Status: Standard, valid
Released: 2022-12
VDE Art. No.: 0400569

This part of IEC 61557 specifies the requirements for measuring equipment applied to testing the phase sequence in three-phase distribution systems. Indication of the phase sequence may be mechanical, visual and/or audible.

Replacement for:
DIN EN 61557-7 VDE 0413-7:2008-02

This Document is related to the following Topics (in bold):

17	METROLOGY AND MEASUREMENT. PHYSICAL PHENOMENA
17.140	Acoustics and acoustic measurements
17.160	Vibrations, shock and vibration measurements
17.180	Optics and optical measurements
17.200	Thermodynamics and temperature measurements
17.220	Electricity. Magnetism. Electrical and magnetic measurements
17.240	Radiation measurements

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DIN EN IEC 61557-7 VDE 0413-7:2022-12

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 7: Phase sequence

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