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EN 50557:2011 Standard

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  Keywords:

#ard #prospective #current #assessment #means

  This standard is no longer addressed in the last official Journal publication of the "2021-03-16 ". This standard is addressed for the last time in the official journal publication of the "2020-11-04"

  Directive

Electromagnetic compatibility (EMC) Directive (2014/30/EU)

  Last Official Journal reference

Wednesday 4th of November 2020

  Description:

Requirements for automatic reclosing devices (ARDs) for circuit breakers-RCBOs-RCCBs for household and similar uses

  Purpose

This European Standard applies to Automatic Reclosing Devices (hereinafter referred to as “ARD”) for household and similar uses, for rated voltage not exceeding 440 V a.c. intended to be used in combination with circuit-breakers and/or RCCBs and/or RCBOs, and designed either for factory assembly or for assembly on site. These devices are intended to reclose main protective devices (hereinafter referred to as “MPD”) such as circuit-breakers complying to EN 60898-1 and/or EN 60898-2, RCCBs complying to EN 61008-1 and RCBOs complying to EN 61009-1 after tripping of those devices in order to re-establish continuity of service. In detail, this European Standard applies to the following types of ARD: - ARD with assessment means, reclosing only if both the prospective line current and the prospective earth-fault current do not exceed given values; - ARD with assessment means, reclosing only if the prospective line current does not exceed a given value; - ARD with assessment means, reclosing only if the prospective earth-fault current does not exceed a given value; - ARD that reclose without any assessment.

  Publication

Friday 13th of May 2016

  Cessation

This standard has been withdrawn on 2021-01-17

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