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Publication details

Publication CODE Title
IEC 61557-7:2019 RLV (2019-07) 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
 
Price Excl. VAT Total number of pages, tables and drawings
85.00 € 44.
Description
IEC 61557-7:2019 RLV contains both the official IEC International Standard and its Redline version. The Redline version is not an official document, it is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.

IEC 61557-7:2019 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. IEC 61557-7:2019 cancels and replaces the second edition published in 2007. This edition constitutes a technical revision. This edition includes the following changes with respect to the previous edition:
a) alignment of the structure with that of the whole IEC 61557 series;
b) updated requirements in 4.3 in accordance with new editions of IEC 61010-1 and IEC 61010-031;
c) the information on markings was extended;
d) the information on the operating instructions was extended;
e) complement to the information on the testing of leads;
f) test leads for insulated conductors were introduced;
g) Annex B was added with information on phase sequence tests and indications.
Class  C990  (IEC PUBLICATIONS IEC PUBLICATIONS)
Available files
EN version

Status
Status IEC PUBLICATION
Situation Currently active
Origin
Committee TC 85
MEASURING EQUIPMENT FOR ELECTRICAL AND ELECTROMAGNETIC QUANTITIES
Responsible Monsieur DE LEEUW Thierry, Technical Officer
Diamant Building Bd Auguste Reyers, 80
1030  BRUXELLES
Phone: +32 2 706 85 72
E-mail: thierry.deleeuw@ceb-bec.be
Approval
BEC Approval 2019-07-26
ICS-Code (International Standards Classification) 17.220.20 , 29.080.01 , 29.240.01
NBN Status New
IEC publication date 2019-07-26
IEC stability date 2025-12-31
IEC file modification date 2019-07-26
IEC last modification date 2019-07-26