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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
ICS Groups
17.220.20 Measurement of electrical and magnetic quantities 29.080.01 Electrical insulation in general 29.240.01 Power transmission and distribution networks in general
Directives or regulations
None

Standard history

Status
Date
Type
Name
15.12.2023
Main + amendment
EVS-EN IEC 61557-7:2022+A1:2023
15.12.2023
Amendment
EVS-EN IEC 61557-7:2022/A1:2023
15.06.2022
Main
EVS-EN IEC 61557-7:2022
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.

Required fields are indicated with *

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Standards designation

EVS Estonian standard
EN European standard (published by an CEN or CENELEC)
EN ISO International standard adopted as an European standard
ISO International Organization for Standardization’s standard
IEC International Electrotechnical Commission’s standard
HD CENELEC’s harmonisation document
   
EVS-EN European standard implemented in Estonia
EVS-EN ISO International standard adopted in Europe and implemented in Estonia
EVS-EN ISO/IEC International standard/International electrotechnical standard adopted in Europe and implemented in Estonia
EVS-IEC International electrotechnical standard implemented in Estonia
EVS-ISO International standard implemented in Estonia
   
A, AMD amedment
+A a full standard plus the amendment
/A only amendment
COR, AC corrigendum
+COR a full standard plus the corrigendum
NA national annex
+NA a full standard plus the national annex
/NA only national annex
TS technical specification
TR technical report
CWA agreement, developed by a CEN or CENELEC
prEVS-EN (etc) draft standard
   
et the standard is in Estonian only
en the standard is in English only
et-en the standard is in Parallel text Estonian-English