IEC 61557-7:2007 Withdrawn

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

Note: this publication has been replaced by IEC 61557-7:2019

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Abstract

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. This part of IEC 61557 does not apply to ancillary measuring equipment for other quantities, for example voltage testers comprising an additional phase sequence indicator. It does not apply to monitoring relays. This second edition cancels and replaces the first edition published in 1997. This edition constitutes a minor revision.

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Additional information

Publication typeInternational Standard
Publication date2007-01-29
Edition2.0
Available language(s)English/French, Spanish
TC/SCTC 85 - Measuring equipment for electrical and electromagnetic quantitiesrss
ICS17.220.20 - Measurement of electrical and magnetic quantities
29.080.01 - Electrical insulation in general
29.240.01 - Power transmission and distribution networks in general
Stability date  2019
Pages17
File size249 KB

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