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NEK IEC 60947-6-2:2020

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IEC 60947-6-2:2020 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).The contents of the corrigenda of December 2021 and June 2023 have been included in this copy.

Dokumentinformasjon

  • Standard fra NEK
  • Publisert:
  • Utgave: 3.0
  • Versjon: 1
  • Varetype: NAT
  • Products.Specs.pages
  • ICS 29.120.40
  • ICS 29.130.20
  • National Committee NEK/NK121

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