ANSI CSA C22.2 NO.248.11-11-2011 Low-voltage fuses - Part 11 Plug fuses (Third Edition).pdf

1、C22.2 No. 248.11-11Low-voltage fuses Part 11: Plug fusesLegal 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 vi

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17、reof, and if you do make 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. 248.11-11May 2011Title:Low-voltage fuses Part 11: Plug fusesPagination:18 pages,

18、 each dated May 2011To register for e-mail notification about any updates to this publicationgo to www.ShopCSA.caclick on E-mail Services under MY ACCOUNTclick on CSA Standards Update ServiceThe List ID that you will need to register for updates to this publication is 2421212.If you require assistan

19、ce, please e-mail techsupportcsa.ca or call 416-747-2233.Visit CSAs policy on privacy at www.csagroup.org/legal to find out how we protect your personal information.Blank pageAssociation of Standardization and CertificationNMX-J-009/248/11-ANCESecond EditionCanadian Standards AssociationCSA C22.2 No

20、. 248.11-11Third EditionUnderwriters Laboratories Inc.UL 248-11Third EditionLow-Voltage Fuses Part 11: Plug FusesMay 13, 2011ANSI/UL 248-11-2011Commitment for AmendmentsThis standard is issued jointly by the Association of Standardization and Certification (ANCE), theCanadian Standards Association (

21、CSA), and Underwriters Laboratories Inc. (UL). Comments orproposals for revisions on any part of the standard may be submitted to ANCE, CSA, or UL at anytime.Revisions to this standard will be made only after processing according to the standards developmentprocedures of ANCE, CSA, and UL. CSA and U

22、L will issue revisions to this standard by means of anew edition or revised or additional pages bearing their date of issue. ANCE will incorporate the samerevisions into a new edition of the standard bearing the same date of issue as the CSA and UL pages.Copyright 2011Rights reserved in favor of ANC

23、E.ISBN 978-1-55491-641-2 2011 Canadian Standards AssociationAll rights reserved. No part of this publication may be reproduced in any form whatsoever without theprior permission of the publisher.CSA Standards are subject to periodic review, and suggestions for their improvement will be referredto th

24、e appropriate committee. To submit a proposal for change to CSA Standards, please send thefollowing information to inquirescsa.ca and include Proposal for change in the subject line:Standard designation (number); relevant clause, table, and/or figure number; wording of the proposedchange; and ration

25、ale for the change.To purchase CSA Standards and related publications, visit CSAs Online Store at www.ShopCSA.ca orcall toll-free 1-800-463-6727 or 416-747-4044.Copyright 2011 Underwriters Laboratories Inc.ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Sta

26、ndardshould be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regardingthose Standards shall remain the sole and exclusive property of UL.This ANSI/UL Standard for Safety consists of the Third Edition including revisions through May 13,2011. The most recent desig

27、nation of ANSI/UL 248-11 as an American National Standard (ANSI)occurred on May 13, 2011. ANSI approval for a standard does not include the Cover Page, TransmittalPages, Title Page (front and back), or the Preface.Comments or proposals for revisions on any part of the Standard may be submitted to UL

28、 at any time.Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative StandardsDevelopment System (CSDS) at http:/.To purchase UL Standards, visit Comm 2000 at http:/m- call toll-free 1-888-853-3503.CONTENTSPreface .41 General 61.1 Scope .64 Classification .65 Characteristic

29、s 65.2 Voltage rating 65.3 Current rating 75.5 Interrupting rating .76 Marking 76.1 Marking of fuses 77 Construction 77.1 Dimensions 77.3 Connections 108 Tests .158.1 Fuses for operation test 158.2 Verification of temperature rise and current-carrying capacity .158.3 Verification of overload operati

30、on 158.4 Verification of operation at rated voltage .169 Special tests 169.1 General 169.2 Verification of low melting point P (D for time delay) characteristic .169.3 Verification of go/no go gauging requirements for Edison-base and Type C plug fuses .179.4 Verification of adapter requirements for

31、Type S plug fuses .17MAY 13, 2011 NMX-J-009/248/11-ANCE CSA C22.2 NO. 248.11-11 UL 248-11 3PrefaceThis is the harmonized ANCE, CSA, and UL standard for Low-Voltage Fuses Part 11: Plug Fuses. It isthe second edition of NMX-J-009/248/11-ANCE, the third edition of CSA C22.2 No. 248.11-11, and thethird

32、edition of UL 248-11. This edition of NMX-J-009-248/11-ANCE cancels the previous editionpublished in 2000. This edition of CSA C22.2 No. 248.11-11 supersedes the previous edition published in2000.This harmonized standard was prepared by the Association of Standardization and Certification (ANCE),the

33、 Canadian Standards Association (CSA), and Underwriters Laboratories Inc., (UL).This Standard is considered suitable for use for conformity assessment within the stated scope of theStandard.The present Mexican Standard was developed by the CT 32 from the Comite de Normalizacion de laAsociacion de No

34、rmalizacion y Certificacion, A.C., CONANCE, with the collaboration of the fusemanufacturers and users.This standard was reviewed by the CSA Subcommittee on Fuses and Fuseholders, under the jurisdictionof the CSA Technical Committee on Industrial Products and the CSA Strategic Steering Committee onRe

35、quirements for Electrical Safety, and has been formally approved by the CSA Technical Committee.This standard has been approved by the American National Standards Institute (ANSI) as an AmericanNational Standard.A UL standard is current only if it incorporates the most recently adopted revisions, al

36、l of which areitemized on the transmittal notice that accompanies the latest set of revised requirements.Where reference is made to a specific number of samples to be tested, the specified number is to beconsidered a minimum quantity.Note: Although the intended primary application of this standard i

37、s stated in its scope, it is important to note thatit remains the responsibility of the users of the standard to judge its suitability for their particular purpose.Level of HarmonizationThis standard is published as an identical standard for ANCE, CSA, and UL. An identical standard is astandard that

38、 is exactly the same in technical content except for national differences resulting fromconflicts in codes and governmental regulations. Presentation is word for word except for editorialchanges.InterpretationsThe interpretation by the standards development organization of an identical or equivalent

39、 standard isbased on the literal text to determine compliance with the standard in accordance with the proceduralrules of the standards development organization. If more than one interpretation of the literal text has beenidentified, a revision is to be proposed as soon as possible to each of the st

40、andards developmentorganizations to more accurately reflect the intent.MAY 13, 2011NMX-J-009/248/11-ANCE CSA C22.2 NO. 248.11-11 UL 248-114ANCE Effective DateThe effective date for ANCE will be announced through the Diario Oficial de la Federacin (OfficialGazette) and is indicated on the cover page.

41、CSA Effective DateThe effective date for CSA International will be announced through CSA Informs or a CSA certificationnotice.UL Effective DateAs of May 13, 2011 all products Listed or Recognized by UL must comply with the requirements in thisstandard.A UL effective date is one established by Underw

42、riters Laboratories Inc. and is not part of the ANSIapproved standard.MAY 13, 2011 NMX-J-009/248/11-ANCE CSA C22.2 NO. 248.11-11 UL 248-11 5Low-Voltage Fuses Part 11: plug fuses1 GeneralNOTE This Part is intended to be read together with the Standard for Low-Voltage Fuses Part 1: General Requirement

43、s,hereafter referred to as Part 1. The numbering of the Clauses in this Part correspond to like numbered Clauses in Part 1.The requirements of Part 1 apply unless modified by this Part. For Clauses not shown below, refer to the Standard forLow-Voltage Fuses Part 1: General Requirements, NMX-J-009/24

44、8/1-ANCE CAN/CSA C22.2 No. 248.1 UL 248-1.1.1 ScopeThis Part applies to plug fuses rated 30 A or less and 125 V ac (127 V ac for Mexico). DC ratings areoptional.4 ClassificationPlug fuses are non-renewable and not current limiting, with an interrupting rating of 10,000 A. Plug fusesare divided into

45、3 sub-classifications. Time-delay ratings are optional.Edison-basePlug fuses which are interchangeable for all current ratings. No rejection feature isused. See Figure A.Type CPlug fuses which have a non-interchangeable feature for 3 current ranges (0 15, 16 20, and 21 30 A). See Figure A.Type SPlug

46、 fuses which have a non-interchangeable feature for 11 current ranges (0.1 1,1.125 - 1.25; 1.4 1.6; 1.8 2.0; 2.25 2.5; 2.8 3.2; 3.5 4; 4.5 5; 5.6 6.25; 7 15; and 16 30 A). See Figure B.In Canada only, Type C and Type S fuses may be used, and for all ratings 15 30 A, these fuses shallhave low melting

47、 point P (D for time delay) characteristics.5 Characteristics5.2 Voltage ratingFor AC, the rating shall be 125 V ac or, for fuses intended for installation in Mexico, the rating shall be127 V ac.The DC voltage rating may be different from the AC rating.MAY 13, 2011NMX-J-009/248/11-ANCE CSA C22.2 NO.

48、 248.11-11 UL 248-1165.3 Current rating30 A and less.5.5 Interrupting ratingFor AC 10,000 AFor DC 10,000 A6 Marking6.1 Marking of fusesc) voltage rating is optional;d) interrupting rating is optional;e) fuse classification is optional; andg) a plug fuse shall not be marked Current Limiting.In additi

49、on to the requirements in Part 1: Fuses for United States shall have a prominent hexagonalfeature when rated 15 A or less. Fuses for Canada shall have a low melting point characteristic and shallbe marked with a P or with a D for time delay.7 Construction7.1 DimensionsFuse dimensions are shown in Figures A and B.This is generated text for figtxt.MAY 13, 2011 NMX-J-009/248/11-ANCE CSA C22.2 NO. 248.11-11 UL 248-11 7Figure A Dimensions