Hivatkozási szám

MSZ EN IEC 62020-1:2021

Dokumentumazonosító

177281

Cím

Villamos szerelési anyagok. Hibaáram-monitorok (RCM-ek). 1. rész: RCM-ek háztartási és hasonló használatra (IEC 62020-1:2020 + COR1:2020)

Angol cím

Electrical accessories. Residual current monitors (RCMs). Part 1: RCMs for household and similar uses (IEC 62020-1:2020 + COR1:2020)

Alkalmazási terület

This document applies to residual current monitors for household and similar purposes, having rated operational voltages and a rated voltage of the monitored circuit not exceeding 440 V AC and rated currents not exceeding 125 A. NOTE 1 The standard for residual current monitors having rated operational voltages and a rated voltage of the monitored circuit exceeding 440 V AC is in preparation, as IEC 62020-2. RCMs are intended to monitor the residual current of the installation and to give a warning if the residual current between a live part and an exposed conductive part or earth exceeds a predetermined level. RCMs covered by this document are not intended to be used as protective devices. RCMs detect residual currents circulating in an AC circuit (e.g. residual alternating current, residual pulsating direct current, residual smooth direct current), whether suddenly applied or slowly rising. NOTE 2 RCMs for DC systems are under consideration. This document applies to monitors performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating current of the device and providing the specified warning signal(s) when the residual current exceeds this value. RCMs supplied by internal batteries are not covered by this document. The requirements of this document apply for standard conditions (see 7.1). Additional requirements can be necessary for RCMs used in locations having severe environmental conditions. RCMs are intended for use in an environment with pollution degree 2 and overvoltage category III. For an environment with a higher pollution degree, enclosures giving the appropriate degree of protection are used. RCMs in compliance with this document are suitable for use in TN, TT, and IT systems. This document does not cover Insulation Monitoring Devices (IMDs), which are covered by the scope of IEC 61557-8. NOTE 3 An RCM is distinguished from an IMD in that it is passive in its monitoring function and only responds to an unbalanced fault current in the installation being monitored. An IMD is active in its monitoring and measuring functions in that it can measure the balanced and unbalanced insulation resistance or impedance in the installation (see IEC 61557-8).

ICS

29.120.50 Olvadóbiztosítók és egyéb, túláram ellen védő készülékek

Műszaki Bizottság

A szabvány nyelve

angol

Az érvényesség kezdete

2021-08-01

Forrás

idt EN IEC 62020-1:2021; idt IEC 62020-1:2020; idt IEC 62020-1:2020/COR1:2020-07

Előd

MSZ EN 62020:1999, MSZ EN 62020:1998/A1:2005

Utód

Módosítás

SZK-közlemények

Kapcsolódó európai jogszabály

2014/35/EU (LVD14); 2014/30/EU (EMC14)

A szabvány

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