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CEI EN 60947-2

Low-voltage switchgear and controlgear Part 2: Circuit-breakers

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Organization: CEI
Publication Date: 1 April 2018
Status: active
Page Count: 254
ICS Code (Low voltage switchgear and controlgear): 29.130.20
scope:

Scope and object

This part of IEC 60947 series applies to circuit-breakers, the main contacts of which are intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c.; it also contains additional requirements for integrally fused circuit-breakers.

Circuit-breakers rated above 1 000 V a.c. but not exceeding 1 500 V a.c. may also be tested to this standard.

It applies whatever the rated currents, the method of construction or the proposed applications of the circuit-breakers may be.

The requirements for circuit-breakers which are also intended to provide earth leakage protection are contained in Annex B.

The additional requirements for circuit-breakers with electronic over-current protection are contained in Annex F.

The additional requirements for circuit-breakers for IT systems are contained in Annex H.

The requirements and test methods for electromagnetic compatibility of circuit-breakers are contained in Annex J.

The requirements for circuit-breakers not fulfilling the requirements for over-current protection are contained in Annex L.

The requirements for modular residual current devices (without integral current breaking device) are contained in Annex M.

The requirements and test methods for electromagnetic compatibility of circuit-breaker auxiliaries are contained in Annex N.

The requirements and test methods for d.c. circuit-breakers for use in photovoltaic (PV) applications are contained in Annex P.

The requirements and test methods for circuit-breakers incorporating residual current protection with automatic reclosing functions are contained in Annex R.

Supplementary requirements for circuit-breakers used as direct-on-line starters are given in IEC 60947-4-1, applicable to low-voltage contactors and starters.

The requirements for circuit-breakers for the protection of wiring installations in buildings and similar applications, and designed for use by uninstructed persons, are contained in IEC 60898.

The requirements for circuit-breakers for equipment (for example electrical appliances) are contained in IEC 60934.

For certain specific applications (for example traction, rolling mills, marine service) particular or additional requirements may be necessary.

NOTE Circuit-breakers which are dealt with in this standard can be provided with devices for automatic opening under predetermined conditions other than those of over-current and undervoltage as, for example, reversal of power or current. This standard does not deal with the verification of operation under such pre-determined conditions.

The object of this standard is to state:

a) the characteristics of circuit-breakers;

b) the conditions with which circuit-breakers shall comply with reference to:

1) operation and behaviour in normal service;

2) operation and behaviour in case of overload and operation and behaviour in case of short-circuit, including co-ordination in service (selectivity and back-up protection);

3) dielectric properties;

c) tests intended for confirming that these conditions have been met and the methods to be adopted for these tests;

d) information to be marked on or given with the apparatus.

Document History

March 1, 2019
Low-voltage switchgear and controlgear Part 2: Circuit-breakers
A description is not available for this item.
CEI EN 60947-2
April 1, 2018
Low-voltage switchgear and controlgear Part 2: Circuit-breakers
Scope and object This part of IEC 60947 series applies to circuit-breakers, the main contacts of which are intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V...
July 1, 2014
Low-voltage switchgear and controlgear Part 2: Circuit-breakers
Scope and object Operation and behaviour in case of overload and operation and behaviour in case of short-circuit, including co-ordination in service (selectivity and back-up protection);
October 1, 2010
Low-voltage switchgear and controlgear Part 2: Circuit-breakers
La presente Variante aggiorna riferimenti normativi e definizioni e modifica paragrafi relativi a dati di targa, prescrizioni di costruzione e modalità di prova con particolare riferimento agli...
July 1, 2007
Low-voltage switchgear and controlgear - Part 2: Circuit-breakers
Scope and object Replace the existing item b)2) of this subclause by the following new item b)2): 2) operation and behaviour in case of overload and operation and behaviour in case of...
July 1, 2007
Low-voltage switchgear and controlgear - Part 2: Circuit-breakers
La presente Norma si applica agli interruttori automatici i cui contatti principali sono da inserire in circuiti di tensione nominale non superiore a 1000 V c.a. e 1500 V c.c.; essa contiene inoltre...
November 1, 2004
Apparecchiature a bassa tensione - Parte 2: Interruttori automatici
La presente Norma si applica agli interruttori automatici i cui contatti principali sono da inserire in circuiti di tensione nominale non superiore a 1000 V c.a. e 1500 V c.c.; essa contiene inoltre...
July 1, 2002
Apparecchiature a bassa tensione - Parte 2: Interruttori automatici
La presente Norma é annullata e sostituita dalla Nuova edizione, CEI EN 60947-2:2004-11 (CEI 17-5); tuttavia rimane applicabile fino al 01-06-2006.
January 1, 2001
Apparecchiature a bassa tensione - Parte 2: Interruttori automatici
Trattasi di Errata Corrige al solo testo Italiano. La presente Norma é annullata e sostituita dalla Nuova edizione, CEI EN 60947-2:2004-11 (CEI 17-5); tuttavia rimane applicabile fino al 01-06-2006.
February 1, 1999
Apparecchiature a bassa tensione - Parte 2: Interruttori automatici
La presente Norma é annullata e sostituita dalla Nuova edizione, CEI EN 60947-2:2004-11 (CEI 17-5); tuttavia rimane applicabile fino al 01-06-2006.
October 1, 1998
Apparecchiature a bassa tensione - Parte 2: Interruttori automatici
La presente Norma si applica agli interruttori automatici i cui contatti principali sono da inserire in circuiti di tensione nominale non superiore a 1000 V c.a. e 1500 V c.c.; essa contiene inoltre...
December 1, 1993
Variante n. 1
La presente variante comprende: - l'Appendice A, relativa al coordinamento in condizioni di cortocircuito tra un interruttore e un altro dispositivo di protezione associato; - la nuova Appendice B,...
September 1, 1992
Apparecchiature a bassa tensione - Parte 2: Interruttori automatici
Versione italiana della Norma Europea CENELEC EN 60947-2, con versione inglese a fronte, equivalente alla Pubblicazione IEC 947-2 (1989) più Corrigenda 1989 e 1990, la Norma si applica agli...

References

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