Back

EVS-EN IEC 61557-7:2022+A1:2023

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)

General information
Valid from 15.12.2023
Base Documents
EN IEC 61557-7:2022; IEC 61557-7:2019; IEC 61557-7:2019/AMD1:2023; EN IEC 61557-7:2022/A1:2023
Directives or regulations
None

Standard history

Status
Date
Type
Name
15.12.2023
Main + amendment
15.12.2023
Amendment
15.06.2022
Main
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, Annex I and
IEC 61010-1:2010/AMD1:2016, Annex I.
*
*
*
PDF
17.08 € incl tax
Paper
17.08 € incl tax
Browse standard from 2.44 € incl tax
Standard monitoring