BRITISH STANDARD BS 5583:1978EN 50011

Specification for

Low voltage switchgear and controlgear for industrial use Terminal marking, distinctive number and distinctive letter for particular contactor relays

This European Standard EN 50011 was given as from 31 May 1978 the status of a British Standard

UDC 621.316.54:621.3.027.2:003.62

BS 5583:1978

This British Standard was published under the authority of the Executive Board on 31 May 1978

© BSI 08-1999

The following BSI references relate to the work on this standard:Committee reference PEL/92Draft for comment 73/26489 DC

ISBN 0 580 101231

Cooperating organizations

The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the National Committees of the following countries.

Austria NetherlandsBelgium NorwayDenmark PortugalFinland SpainFrance SwedenGermany SwitzerlandIreland United KingdomItaly

Amendments issued since publication

Amd. No. Date of issue Comments

BS 5583:1978

© BSI 08-1999 i

Contents

PageCooperating organizations Inside front coverForeword 2Text of EN 50011 3National appendix A Inside back coverNational appendix B Inside back cover

BS 5583:1978

ii © BSI 08-1999

A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application.

Compliance with a British Standard does not of itself confer immunity from legal obligations.

Summary of pagesThis document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover.This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.

EUROPEAN STANDARD

NORME EUROPÉENNE

EUROPÄISCHE NORM

EN 50011

Edition 1 February 1977

UDC 621.316.54:621.3.027.2:003.62

Key words: Electrical switchgear and controlgear: industrial use: low voltage: terminal: marking: distinctive number: distinctive letter — contactor relay — auxiliary contact

English version

Low voltage switchgear and controlgear for industrial use Terminal marking, distinctive number and distinctive letter

for particular contactor relays

Appareillage industriel à basse tension. Marquage des bornes, nombre caractéristique et lettre caracteristique pour des contacteurs auxiliaires particuliers

Industrielle Niederspannungs-Schaltgeräte. Anschlussbezeichnungen, Kennzahlen und Kennbuchstaben für bestimmte Hilfsschütze

This European Standard was accepted by CENELEC on 31 January 1977.CENELEC members are committed in accordance with CENELEC InternalRegulations to give this European Standard the status of a national standardwithout any alteration.Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CENELEC GeneralSecretariat or to any CENELEC member.This European Standard is established by CENELEC in three official versions(English, French, German). A translation made by another member under itsown responsibility, in its own language, and notified to CENELEC has thesame status.CENELEC members are the national electrotechnical committees of Austria,Belgium, Denmark, Finland, France, Germany, Ireland, Italy, Netherlands,Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.

CENELEC

European Committee for Electrotechnical StandardizationComité Européen de Normalisation Electrotechnique

Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B-1050 Brussels

© Copyright reserved to all CENELEC members

EN 50011

© BSI 08-19992

Foreword

This European Standard has been prepared by CENELEC Technical Committee 17X.Contactor relays may be given a distinctive number and terminal marking according to the General rules, EN 50005. On this basis, it is desirable to lay down more detailed rules for particular contactor relays, such as those defined in clause 1.

Contents

PageForeword 21 Scope 32 Terminal marking rule 33 Distinctive number and distinctive letter 34 Contactor relays designated by the

distinctive letter E 4Table 1 — Diagrams of contactor relays designated by the distinctive letter E 5Table 2 — Diagrams of contactor relays designated by the distinctive letter Y 6Appendix A Contactor relays designated by distinctive letters X, Y or Z 6

EN 50011

© BSI 08-1999 3

1 ScopeThis standard applies to contactor relays according to IEC Standard 337, having specific relative positions of the contact elements and an associated terminal numbering sequence.These particular contactor relays are designated by a distinctive number followed by a specified distinctive letter.The use of this standard is recommended where terminal marking is a requirement of the relevant standard for contactor relays, or is usual practice.

2 Terminal marking ruleThe contactor terminal marking of a contactor relay is formed, in principle, by two figures.2.1 Function number. The unit number is a function number, i.e.:

1 – 2 for break-contacts;3 – 4 for make-contacts.

2.2 Sequence number. The figure of the tens is a continuous sequence number beginning with 1 (except for contactor relays designated 01 E), independently of the contact function.Terminals belonging to the same contact are marked with the same sequence number.For contactor relays having 10 contact elements, the sequence number 10 shall be replaced by 0.2.3 Numbering method. The contact numbering is made, without any break, from left to right on the device; for devices with tiers, the numbering begins with the tier next to the mounting level.Example of contact numbering methods on contactor relays of various constructional types, but with the same distinctive number 62 E

The prescribed numbering method does not allow blank contact cells inside a contact series.

3 Distinctive number and distinctive letterThe number, type and location of contact elements of contactor relays according to this standard are indicated by a distinctive number followed by a distinctive letter.3.1 Distinctive number. In accordance with EN 50005, clause 6, the first figure of the distinctive number gives the quantity of make-contact elements and the second figure the quantity of break-contact elements.3.2 Distinctive letter. The distinctive letter indicates the location of the contact elements in relation to each other and their terminal marking.Clause 4 defines the arrangement of contactor relays indicated by the distinctive letter E.Appendix A gives information on permissible deviations, indicated by the distinctive letters X, Y or Z.

EN 50011

4 © BSI 08-1999

For new designs, the arrangement indicated by the distinctive letter E should be preferred.

4 Contactor relays designated by the distinctive letter EFor contactor relays having the same distinctive number and the distinctive letter E, independently of their construction, the sequence of the contact elements within the device is specified according to the diagrams of Table 1.According to the present rule, the sequence number becomes a location number and allows a given contact element terminal of a contactor relay in the equipment to be quickly found solely by counting the contacts.

EN

50011

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SI 08-1999

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Table 1 — Diagrams of contactor relays designated by the distinctive letter E

EN 50011

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Appendix A Contactor relays designated by distinctive letters X, Y or ZA.1 Contactor relays designated by the distinctive letter Z If the location of the contact elements within the device (but not the terminal marking) differs from the provisions of clause 4, the device is designated by the distinctive letter Z instead of the distinctive letter E.

A.2 Contactor relays designated by the distinctive letter X If the location of the contact elements within the device and the terminal marking differ from the requirements of clause 4, the device is designated by the distinctive letter X instead of the distinctive letter E.Such a device shall still comply with the requirements of clauses 2 and 3 of the present standard and with the standard EN 50005.

A.3 Contactor relays designated by the distinctive letter Y Devices obtained by combinations according to Table 2 are designated by the distinctive letter Y instead of the distinctive letter E.

Table 2 — Diagrams of contactor relays designated by the distinctive letter Y

BS 5583:1978

© BSI 08-1999

National appendix AThe United Kingdom participation in the preparation of this European Standard came under the direction of the Power Electrical Engineering Standards Committee of BSI. The committee consists of representatives from the following Government departments and scientific and industrial organizations:

Associated Offices Technical CommitteeAssociation of Short Circuit Testing Authorities*British Electrical and Allied Manufacturers’ Association (BEAMA)*British Railways BoardBritish Steel CorporationDepartment of Energy (Electricity)Electrical Contractors’ Association*Electrical Contractors’ Association of ScotlandElectrical Research Association*Electricity Supply Industry in England and Wales*Engineering Equipment Users’ Association*Institution of Electrical Engineers*Ministry of Defence*National Coal Board*Trades Union Congress

The organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee involved with the work on this standard:

Association of Control Manufacturers (BEAMA)Association of Supervisory and Executive EngineersControl and Automation Manufacturers’ Association (BEAMA)Copper Development AssociationDepartment of the Environment (PSA)Electrical Installation Equipment Manufacturers’ Association (BEAMA)Electronic Components Industry FederationHealth and Safety ExecutiveThe Transmission & Distribution Association (BEAMA)

National appendix BWith reference to the foreword, 3.1 and A.2, EN 50005 has been published as BS 5472 “Low voltage switchgear and controlgear for industrial use. Terminal marking and distinctive number. General rules”.With reference to clause 1, BS 4794 “Control switches” is technically equivalent to IEC 337.

BS 5583:1978 EN 50011

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