EN 60564:1993
(Main)D.C. bridges for measuring resistance
D.C. bridges for measuring resistance
Classification. Class index system. Permissible errors for each class. Conditions for testing. Conditions for use. Methods of testing. Markings. Information to be supplied by the manufacturer.
Gleichstrom-Widerstandsmeßbrücken
Ponts à courant continu pour mesure de résistance
Classification. Systèmes de l'indice de classe. Erreurs admissibles pour chaque classe. Conditions de mesure. Conditions d'utilisation. Méthodes d'essai. Marquage. Documentation d'accompagnement.
Enosmerni mostički za meritve upornosti (IEC 60564:1977 + A1:1981)
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Gleichstrom-WiderstandsmeßbrückenPonts à courant continu pour mesure de résistanceD.C. bridges for measuring resistance17.220.20Measurement of electrical and magnetic quantitiesICS:Ta slovenski standard je istoveten z:EN 60564:1993SIST EN 60564:1999en01-julij-1999SIST EN 60564:1999SLOVENSKI
STANDARD
SIST EN 60564:1999
SIST EN 60564:1999
SIST EN 60564:1999
SIST EN 60564:1999
SIST EN 60564:1999
IEC•NORMECEIINTERNATIONALEIECINTERNATIONAL60564STAN DARDPremière éditionFirst edition1977-01Ponts à courant continu pour mesure de résistanceD.C. bridges for measuring resistance© IEC 1977 Droits de reproduction réservés — Copyright - all rights reservedAucune partie de cette publication ne peut être reproduite niNo part of this publication may be reproduced or utilized inutilisée sous quelque forme que ce soit et par aucunany form or by any means, electronic or mechanical,procédé, électronique ou mécanique, y compris la photo-including photocopying and microfilm, without permission incopie et les microfilms, sans l'accord écrit de l'éditeur.writing from the publisher.International Electrotechnical Commission3, rue de Varembé Geneva, SwitzerlandTelefax: +41 22 919 0300e-mail: inmail@iec.chIEC web site http: //www.iec.chCommission Electrotechnique InternationaleInternational Electrotechnical CommissionMcNSayHapoAHaH 3nenrpoTexHH4eCNari HOMHCCHACODE PRIXPRICE CODEPour prix, voir catalogue en vigueurFor price, see current cataloguePSIST EN 60564:1999
— 3 —CONTENTSPageFOREWORD5PREFACE5Clause1.Scope 72.Terms and definitions 73.Classification 154.Stability 155.Permissible limits of intrinsic error156.Conditions for the determination of intrinsic errors177.Permissible variations 198.Additional electrical and mechanical requirements 219.Information, markings and symbols 23SIST EN 60564:1999
— 5 —INTERNATIONAL ELECTROTECHNICAL COMMISSIOND.C. BRIDGES FOR MEASURING RESISTANCEFOREWORDI) The formal decisions or agreements of the IEC on 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 with.2)They have the form of recommendations for international use and they are accepted by the National Committees in thatsense.3)In order to promote international unification, the IEC expresses the wish that all National Committees should adoptthe text of the IEC recommendation for their national rules in so far as national conditions will permit. Any divergencebetween the I EC recommendation and the corresponding national rules should, as far as possible, be clearly indicatedin the latter.PREFACEThis standard has been prepared by Sub-Committee 13B, Electrical Measuring Equipment, ofIEC Technical Committee No. 13, Electrical Measurements.Drafts were discussed at the meetings held in Toronto in 1972 and in Bucharest in 1974. As a resultof this latter meeting, the draft, Document 13B(Central Office)49, was submitted to the NationalCommittees for approval under the Six Months' Rule in July 1975.The following countries voted explicitly in favour of publication:ArgentinaPolandAustriaRomaniaBelgiumSouth Africa (Republic of)DenmarkSwedenFranceSwitzerlandGermanyTurkeyHungaryUnited KingdomIsraelUnited States of AmericaItalyYugoslaviaJapanOther IEC publications quoted in this standard:Publication Nos. 27:Letter Symbols to be Used in Electrical Technology.51:Recommendations for Direct Acting Indicating Electrical Measuring Instruments and theirAccessories.160:Standard Atmospheric Conditions for Test Purposes.414:Safety Requirements for Indicating and Recording Electrical Measuring Instruments and theirAccessories.SIST EN 60564:1999
— 7 —D.C. BRIDGES FOR MEASURING RESISTANCE1.ScopeThis standard applies to d.c. bridges for measuring resistance. It also applies to auxiliaryequipment which is a built-in part of the bridge.This standard does not apply to bridge comparators*, nor to self-balancing bridges nor to thosewhich employ graduations on the null detector to obtain a part of the indicated value, nor toexternal auxiliary equipment used with the bridge.2.Terms and definitionsFor the purposes of this standard, the following definitions apply:2.1 D.C. bridge for measuring resistance (hereinafter designated "bridge")The assembly of at least three resistance arms which, together with a test resistor, forms a bridgenetwork; a source of direct current and a null detector are also required for its operation: thesemay or may not be built-in. At balance, there exists a calculable relationship between the resistancevalues of the resistors.Note. — A d.c. bridge for measuring resistance may be intended to measure two-terminal or four-terminal resistors eachwith or without a leakage current screen (circuit): it will be termed accordingly a two-terminal bridge or a f
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