IEC 60947-6-2:2020 PRV 
Pre release version

Low-voltage switchgear and controlgear - Part 6-2: Multiple function equipment - Control and protective switching devices (or equipment) (CPS)

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Abstract

This Final Draft International Standard is an up to 6 weeks' pre-release of the official publication. It is available for sale during its voting period: 2020-09-11 to 2020-10-23. By purchasing this FDIS now, you will automatically receive, in addition, the final publication.

This document applies to control and protective switching devices (or equipment) (CPS), the main contacts of which are intended to be connected to circuits of rated voltage not exceeding 1 000 V AC or 1 500 V DC. It covers control and protective switching device (CPS):
- which provides protective and control functions for circuits and motors;
- where its control function is operated exclusively otherwise than by hand;
- which provides continuity of service after over-current conditions; and
- which can have additional functions, such as isolation or communication.
This third edition cancels and replaces the second edition published in 2002 and its Amendment 1:2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- editorial changes according to ISO/IEC directives Part 2,
- alignments with IEC 60947-1:2020:
- markings ("s", "sol", "r" or "f");
- constructional requirements including material requirements;
- requirements for screwless terminals;
- measurement method of the pole impedance;
- EMC requirement and testing;
- procedure to determine data for electromechanical CPS’s used in functional safety applications;
- harmonisation with IEC 60947-2:2016:
- operation tests of under-voltage relays and shunt releases;
- CPS for IT systems (Annex G);
- coordination with other short-circuit protective devices;
- alignments with IEC 60947-4-1:2018:
- test at the rated conditional short-circuit current Iq of protected switching devices;
- short-circuit tests harmonisation with North America;
- reliability data for functional safety applications (new Annex K);
- safety aspects related to electronic circuits and protective impedance (new Annex N);
- introduction of provisions covering the impact of higher locked rotor current to achieve high efficiency class;
- mention of dedicated wiring accessories;
- definitions and measurement method of the power consumption of the control circuit during holding and pick-up operations;
- load monitoring indicators (new Annex M).

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Additional information

Publication typeInternational Standard
Publication date2020-09-11
Edition3.0
Available language(s)English
TC/SCTC 121/SC 121A - Low-voltage switchgear and controlgearrss
ICS29.120.40 - Switches
29.130.20 - Low voltage switchgear and controlgear
Stability date  2024
Pages110
File size2251 KB

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