Abstract

This part of IEC 61557 specifies the requirements applicable to measuring equipment for testing the phase sequence in three-phase distribution systems. Indication of the phase sequence can be mechanical, visual and/or audible. This document does not apply to additional measurements for other quantities. It does not apply to monitoring relays. NOTE: Common three-phase distribution systems are depicted in IEC 61010-1:2010/AMD1:2016, 6 Annex I.

Begin

2021-05-19

Planned document number

DIN EN 61557-7/A1

Project number

02230275

Responsible national committee

DKE/UK 964.1 - Messgeräte zum Prüfen und Überwachen von Schutzmaßnahmen  

draft standard

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 7: Phase sequence (IEC 85/769/CD:2021); Text in German and English
2022-04
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