CSA C22 2 NO 158-2010 Terminal blocks (Third Edition).pdf

1、C22.2 No. 158-10Terminal blocksLegal Notice for StandardsCanadian Standards Association (CSA) standards are developed through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers representing varied viewpoints and interests to

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17、such copies, you are required to destroy them immediately. Use of this document constitutes your acceptance of the terms and conditions of this Legal Notice.CSA Standards Update ServiceC22.2 No. 158-10March2010Title: Terminal blocksPagination: 33 pages (vii preliminary and 26 text), each dated March

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20、, Canada L4W 5N61-800-463-6727 416-747-4044Visit our Online Store at www.ShopCSA.caC22.2 No. 158-10Terminal blocksCSA Standard100%ISBN 978-1-55491-390-9Technical Editor:Dario Stefancic Canadian Standards Association 2010All rights reserved. No part of this publication may be reproduced in any form w

21、hatsoever without the prior permission of the publisher.To purchase CSA Standards and related publications, visit CSAs Online Store at www.ShopCSA.ca or call toll-free 1-800-463-6727 or 416-747-4044.The Canadian Standards Association (CSA) prints its publications on Rolland Enviro100, which contains

22、 100%recycled post-consumer fibre, is EcoLogo and Processed Chlorine Free certified, and was manufactured using biogas energy.March2010 iiiContents Canadian Standards Association Terminal blocksTechnical Committee on Industrial Products vSubcommittee on Terminal Assemblies viPreface vii1Scope 12 Gen

23、eral requirements and reference publications 12.1 General requirements 12.2 Reference publications 23 Definitions 24 Construction 35Marking 56 Tests 66.1 General 66.2 Selection and preparation of specimens for static heating and dielectric strength tests 76.3 Secureness test 86.4 Static heating test

24、 86.5 Pullout test 96.6 Dielectric strength test 96.7 Accelerated aging test 106.8 Verification of the performance of the terminal assemblies of a terminal block 106.9 Mounting security test 106.10 Corrosion cracking test 116.11 Aluminum conductors 116.12 Spring force connections 116.12.1 General 11

25、6.12.2 Secureness and pullout tests 116.12.3 Conditioning 126.12.4 Temperature test 126.12.5 Dielectric voltage-withstand test 126.12.6 Heat cycling test 126.13 Short-circuit current ratings for terminal blocks 12AnnexesA (normative) Short-circuit current ratings for terminal blocks 24Tables1 Minimu

26、m acceptable spacings 132 Stranded conductor for test 143 Tightening torque for wire bindingscrews and stud-and-nut type connectors 144 Tightening torque for screws* 155 Tightening torque for slotted-head screws smaller than No. 10 intended for use with No. 8 AWG or smaller conductors 16C22.2 No. 15

27、8-10 Canadian Standards Associationiv March20106 Tightening torque for socket-head screws 167 Values for secureness and pullout test 178 Current for static heating test 189 Tests and sequence of tests 2010 Forces for tab pull test 2011 Oven temperatures for aging test 2012 Sequence of tests for term

28、inal blocks having spring force connections 21Figures1 Arrangement for the verification of attachment of the conductor to the clamping unit and of the terminal assembly to the insulator 222 Typical wiring for heating tests 23 Canadian Standards Association Terminal blocksMarch2010 vTechnical Committ

29、ee on Industrial ProductsK. Powell Criterions,Glen Williams, OntarioRepresenting ManufacturersChairS. Paulsen Department of Public Safety,Fredericton, New BrunswickRepresenting Regulatory AuthoritiesVice-ChairD. Stefancic Canadian Standards Association,Mississauga, OntarioProject ManagerRepresenting

30、 Regulatory AuthoritiesD.R.A. MacLeod Nova Scotia Department of Environmentand Labour,Halifax, Nova ScotiaT. Olechna Electrical Safety Authority,Mississauga, OntarioA.Z. Tsisserev City of Vancouver,Vancouver, British ColumbiaRepresenting ManufacturersR.M. Bartholomew Electric Power Equipment Limited

31、,Vancouver, British ColumbiaW.K. Jones Eaton Electrical,Burlington, OntarioM. Smith Rockwell Automation Canada Inc.,Cambridge, OntarioRepresenting General InterestsM. Kasumovich Mississauga, OntarioN. Mancini Mississauga, OntarioD.G. Morlidge Fluor Canada Ltd.,Calgary, AlbertaR. Roberton Shell Canad

32、a Limited,Cambridge, OntarioC22.2 No. 158-10 Canadian Standards Associationvi March2010Subcommittee on Terminal AssembliesM. Smith Rockwell Automation Canada Inc.,Cambridge, OntarioChairJ.W. Bauer Eagle Connector Corporation,Elk Grove Village, Illinois, USAK.B. Boegli Phoenix Contact Inc.,Harrisburg

33、, Pennsylvania, USAT.E. Cudlike Marathon Special Products Corp.,Bowling Green, Ohio, USAC. DeBraal Curtis Industries,Milwaukee, Wisconsin, USAM. Hodak Weco Electrical Connectors Inc.,Baie dUrf, QubecJ. Killinger Underwriters Laboratories Inc.,Northbrook, Illinois, USAL. Lazar Curtis Industries,Milwa

34、ukee, Wisconsin, USAS.J. Powers Curtis Industries,Milwaukee, Wisconsin, USAZ. Psarski CSA International,Toronto, OntarioJ.T. Smith Ilsco of Canada Limited,Mississauga, OntarioD. Stefancic Canadian Standards Association,Mississauga, OntarioProject Manager Canadian Standards Association Terminal block

35、sMarch2010 viiPrefaceThis is the third edition of CSA C22.2 No. 158, one of a series of Standards issued by the Canadian Standards Association under Part II of the Canadian Electrical Code. It supersedes the previous editions, published in 1987 and 1984.This edition incorporates the following change

36、s from the previous edition:(a) updates to other referenced standards;(b) a change in reference to CAN/CSA-C22.2 No. 0.17 for insulation materials testing;(c) the addition of requirements and markings for spring force terminals;(d) revision to the static heating test;(e) an updated corrosion crackin

37、g test;(f) the addition of short-circuit current ratings; and(g) an updated table for static heating test values.For general information on the Standards of the Canadian Electrical Code, Part II, see the preface of CAN/CSA-C22.2 No. 0, General Requirements Canadian Electrical Code, Part II.This Stan

38、dard is considered suitable for use for conformity assessment within the stated scope of the Standard.This Standard was prepared by the Subcommittee on Terminal Assemblies, under the jurisdiction of the Technical Committee on Industrial Products and the Strategic Steering Committee on Requirements f

39、or Electrical Safety, and has been formally approved by the Technical Committee.Interpretations: The Strategic Steering Committee on Requirements for Electrical Safety has provided the following direction for the interpretation of standards under its jurisdiction: “The literal text shall be used in

40、judging compliance of products with the safety requirements of this Standard. When the literal text cannot be applied to the product, such as for new materials or construction, and when a relevant committee interpretation has not already been published, CSAs procedures for interpretation shall be fo

41、llowed to determine the intended safety principle.”March2010Notes: (1) Use of the singular does not exclude the plural (and vice versa) when the sense allows.(2) Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibil

42、ity of the users of the Standard to judge its suitability for their particular purpose.(3) This publication was developed by consensus, which is defined by CSA Policy governing standardization Code of good practice for standardization as “substantial agreement. Consensus implies much more than a sim

43、ple majority, but not necessarily unanimity”. It is consistent with this definition that a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this publication.(4) CSA Standards are subject to periodic review, and suggestions for their improvem

44、ent will be referred to the appropriate committee.(5) All enquiries regarding this Standard, including requests for interpretation, should be addressed to Canadian Standards Association, 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6. Requests for interpretation should(a) define

45、the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;(b) provide an explanation of circumstances surrounding the actual field condition; and(c) be phrased where possible to permit a specific “yes” or “no” answer.Committee interpretations are pr

46、ocessed in accordance with the CSA Directives and guidelines governing standardization and are published in CSAs periodical Info Update, which is available on the CSA Web site at www.csa.ca. Canadian Standards Association Terminal blocksMarch2010 1C22.2 No. 158-10Terminal blocks1Scope1.1This Standar

47、d covers assemblies of wiring terminals and supporting blocks for copper conductors, copper and aluminum conductors, and aluminum conductors rated at a maximum of 1500 V and 2000 kcmil, intended to provide for the connection of wiring designed to be used in accordance with the Rules of the Canadian

48、Electrical Code, Part I.1.2These terminal blocks are intended to support permanently and to insulate wire terminations and joints from each other and from the surface on which the terminal block is mounted, where the absence of such support or insulation could result in a hazard.1.3Terminal blocks c

49、an be of various designs, such as sectional, modular, or one-piece.1.4Terminal blocks can employ a combination of connectors.1.5In CSA standards, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the standard.Notes accompanying clauses do not include requirements or alternative requirement