IEC_60158-1-1970_scan.pdf

C.D.U./U.D.C.:621.316.53.024/.025.027.4-777.001.4.004.12.01COMMISSION ELECTROTECHNIQUE INTERNATIONALE(affiliee a Organisation Internationale de Normalisation-ISO)RECOMMANDATION DE LA CEIINTERNATIONAL ELECTROTECHNICAL COMMISSION(affiliated to the International Organization for Standardization-ISO)IE C RECOMMENDATIONPublication158-1Deuxieme edition-Second edition1970Appareillage de commande a basse tensionPremiere partie:ContacteursLow-voltage controlgearPart 1:ContactorsDroits de reproduction reserves-Copyright-all rights reservedAucune partie de cette publication ne peut tre reproduite ni utilise sous No part of this publication may be reproduced or utilized in anyquelque forme que ce soit et par aucun procede,electronique ou meca-form or by any means,electronic or mechanical,including photocopyingnique,y compris la photocopie et les microfilms,sans Iaccord ecrit de Iediteur.and microfilm,without permission in writing from the publisher.Bureau Central de la Commission Electrotechnique Internationale1,rue de VarembeGeneve,SuissePrix Fr.s.Price S.Fr.60.-IEdVol.9INTERNATIONAL ELECTROTECHNICAL COMMISSIONLOW-VOLTAGE CONTROLGEARPart 1:ContactorsFOREWORD1)The formal decisions or agreements of the IECon technical matters,prepared by Technical Committees on which all theNational Committees having a special.interest therein are represented,express,as nearly as possible,an internationalconsensus of opinion on the subjects dealt with2)They have the form of recommendations for international use and they are accepted by the National Committees in thatsense.3)In order to promote this international unification,the IEC expresses the wish that all National Committees having asyet no national rules,when preparing such rules,should use the IE C recommendations as the fundamental basisfor theserules in so far as national conditions will permit.4)The desirability is recognized of extending international agreement on these matters through an endeavour to harmonizenational standardization rules with these recommendations in so far as national conditions will permit.The NationalCommittees pledge their influence towards that end.PREFACEThis Recommendation has been prepared by Sub-Committee 17B,Low-Voltage Switchgear and Con-trolgear,of Technical Committee No.17,Switchgear and Controlgear.It forms the second edition of Publication 158-1 and supersedes the first edition issued in 1964.Work was commenced in January 1968 and the draft of revision was examined during the meeting heldin Brussels in October 1968.The final draft was submitted to the National Committees for approval underthe Six MonthsRule in March 1969,a corrigendum being circulated in July 1969.The following countries voted explicitly in favour of publication:AustraliaPolandAustriaSouth AfricaBelgiumSwedenDenmarkSwitzerlandFinlandTurkeyFranceUnion of Soviet SocialistGermany*RepublicsIranUnited KingdomIsraelUnited States of America*ItalyYugoslaviaNorwayThe Netherlands National Committee has cast a negative vote since it considers too high the values ofthe temperature-rise limits for insulated coils in air as stated in Clause 7.3.1.Except for the temperature-rise limits for insulated coils in air(Clause 7.3.1),deemed to be too high.*With the exception of Appendix B.92.1.4Contactor(mechanical)A mechanical switching device having only one position of rest,operated otherwise than byhand,capable of making,carrying and breaking currents under normal circuit conditions includingoperating overload conditions.Notes 1.-A contactor is usually intended to operate frequently.2.-A contactor may also be capable of making and breaking short-circuit currents.3.-In French,a contactor the main contacts of which are closed in the position of rest is usually called“rupteur.The word rupteur has no equivalent in the English language.2.1.5(Vacant.)2.1.6Electromagnetic contactorA contactor in which the force for closing or opening the main contacts is provided by anelectro-magnet.2.1.7Pneumatic contactorA contactor in which the force for closing or opening the main contacts is provided by a deviceusing compressed air,without the use of electrical means.2.1.8Electro-pneumatic contactorA contactor in which the force for closing or opening the main contacts is provided by a deviceusing compressed air under the control of electrically operated valves.2.1.9Latched contactorA contactor,the moving elements of which leave the position of rest when the operating meansare energized,but which are prevented by means of a latching arrangement from returning tothe position of rest when the operating means are de-energized.The latching and the release ofthe latching may be mechanical,magnetic,electrical,pneumatic,etc.Note.-Because of the latching,the latched contactor actually acquires a second position of rest and,accordingto the definition 2.1.4,it is not a contactor.However,since the latched contactor in both its utilizationand its design is more closely related to contactors in general than to any other classification of switchingdevice,it is considered proper to require that it complies with the specifications for contactors whereverthey are applicable.2.1.10 Main circuitAll the conducting parts of a contactor included in the circuit which it is designed to close oropen.2.1.11Pole of a contactorThe portion of a contactor associated exclusively with one electrically separated conductingpath of its main circuit and excluding those portions which provide a means for mounting andoperating all poles together.Note.-A contactor is called single-pole if it has only one pole.If it has more than one pole,it may be calledmultipole(two-pole,three-pole,etc.)provided the poles are or can be coupled in such a manner as tooperate together.2.1.12 Main contactA contact included in the main circuit of a contactor,intended to carry,in the closed position,the current of the main circuit.