ANSI CSA C22.2 NO.4248.11-7-2007 Fuseholders - Part 11 Type C (Edison Base) and Type S Plug Fuse (First Edition Update No 1 November 2007 Update No 2 January 2017).pdf

1、C22.2 No. 4248.11-07 (reaffirmed 2016)Fuseholders Part 11: Type C (Edison Base) and Type S Plug FuseLegalNoticeforStandardsCanadian Standards Association (CSA) standards are developed through a consensus standards development process approved by theStandards Council of Canada. This process brings to

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17、ou do make such copies, you are required to destroy them immediately. Use of thisdocument constitutes your acceptance of the terms and conditions of this Legal Notice.Update No. 2 CAN/CSA-C22.2 No. 4248.11-07 January 2017Note: For information about the Standards Update Service or if you are missing

18、any updates, go to shop.csa.ca or e-mail techsupportcsagroup.org.Title: Fuseholders Part 11: Type C (Edison Base) and Type S Plug Fuse originally published February 2007Revisions issued: Update No. 1 November 2007The following revisions have been formally approved and are marked by a vertical line i

19、n the margin on the attached replacement pages:Revised Title page, copyright page, Preface, and Clause 8.7A.2New NoneDeleted None Update your copy by inserting these revised pages.Keep the pages you remove for reference.Association of Standardization and CertificationNMX-J-009/4248/11-ANCEFirst Edit

20、ionCSA GroupCAN/CSA-C22.2 No. 4248.11-07First EditionUnderwriters Laboratories Inc.UL 4248-11First EditionFuseholders Part 11: Type C (Edison Base) and Type S Plug FuseFebruary 28, 2007(Title Page Reprinted: January 13, 2017)ANSI/UL 4248-11-2007 (R2012)Approved byCommitment for AmendmentsThis standa

21、rd is issued jointly by the Association of Standardization and Certification (ANCE), theCanadian Standards Association (operating as “CSA Group”), and Underwriters Laboratories Inc. (UL).Comments or proposals for revisions on any part of the standard may be submitted to ANCE, CSAGroup, or UL at any

22、time. Revisions to this standard will be made only after processing according tothe standards development procedures of ANCE, CSA Group, and UL. CSA Group and UL will issuerevisions to this standard by means of a new edition or revised or additional pages bearing their dateof issue. ANCE will incorp

23、orate the same revisions into a new edition of the standard bearing the samedate of issue as the CSA Group and UL pages.Copyright 2017 ANCERights reserved in favor of ANCE.ISBN 1-55436-047-1 2017 CSA GroupAll rights reserved. No part of this publication may be reproduced in any form whatsoever witho

24、ut theprior permission of the publisher.To purchase the CSA Group Standards and related publications, visit CSA Groups Online Store atshop.csa.ca or call toll-free 18004636727 or 4167474044.This Standard is subject to periodic review, and suggestions for its improvement will be referred to theapprop

25、riate committee. To submit a proposal for change, please send the following information toinquirescsagroup.org and include “Proposal for change” in the subject line: Standard designation(number); relevant clause, table, and/or figure number; wording of the proposed change; and rationalefor the chang

26、e.Copyright 2017 Underwriters Laboratories Inc.To purchase UL Standards, visit COMM 2000 at http:/m- call toll free 18888533503.This ANSI/UL Standard for Safety consists of the First Edition including revisions through December21, 2012.The most recent designation of ANSI/UL 4248-11 as a Reaffirmed A

27、merican National Standard (ANS)occurred on December 21, 2012. ANSI approval for a standard does not include the Cover Page,Transmittal Pages, Title Page (front and back), or the Preface.Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time.Proposals shoul

28、d be submitted via a Proposal Request in ULs On-Line Collaborative StandardsDevelopment System (CSDS) at https:/.ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standardshould be altered in any way. All of ULs Standards and all copyrights, ownerships, and r

29、ights regardingthose Standards shall remain the sole and exclusive property of UL.CONTENTSPreface .41 General 61.1 Scope .64 Classification 65 Characteristics .65.1 Summary of characteristics .66 Marking .76.1 Marking of fuseholder 77 Construction .77.4 Current-carrying parts .77.6 Contacts of a car

30、tridge fuseholder 87.7 Creepage and clearance 97.8A Type S plug fuseholders and adapters 108 Tests .188.1 General .188.4 Verification of temperature rise 188.6A Verification of contactrejection member effectiveness 218.7A Verification of screw shell secureness .21FEBRUARY 28, 2007 NMX-J-009/4248/11-

31、ANCE CSA C22.2 NO. 4248.11-07 UL 4248-11 3PrefaceThis is the common ANCE, CSA Group, and UL standard for Fuseholders Part 11: Type C (EdisonBase) and Type S Plug Fuse. It is the first edition of NMX-J-009/4248/11-ANCE, the first edition of CSAC22.2 No. 4248-11, and the first edition of UL 4248-11.Th

32、is common standard was prepared by the Association of Standardization and Certification (ANCE),CSA Group, and Underwriters Laboratories Inc. (UL). The efforts and support of the CANENA TechnicalHarmonization Subcommittee 32B Fuseholders are gratefully appreciated.This standard is considered suitable

33、 for use for conformity assessment within the stated scope of thestandard.This standard was reviewed by the CSA Subcommittee on Low voltage fuses, under the jurisdiction of theCSA Technical Committee on Industrial Products and the CSA Strategic Steering Committee onRequirements for Electrical Safety

34、, and has been formally approved by the CSA Technical Committee.This standard will be submitted to the Standards Council of Canada for approval as a National Standardof Canada.This standard has been approved by the American National Standards Institute (ANSI) as an AmericanNational Standard.A UL sta

35、ndard is current only if it incorporates the most recently adopted revisions, all 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 shall beconsidered a min

36、imum quantity.Note: Although the intended primary application of this standard is stated in its scope, it is important to note that it remainsthe responsibility of the users of the standard to judge its suitability for their particular purpose.Level of harmonizationThis standard is published as an i

37、dentical standard for ANCE, CSA Group, and UL.An identical standard is a standard that is exactly the same in technical content except for nationaldifferences resulting from conflicts in codes and governmental regulations. Presentation is word for wordexcept for editorial changes.InterpretationsThe

38、interpretation by the standards development organization of an identical or equivalent 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

39、has beenidentified, a revision is to be proposed as soon as possible to each of the standards developmentorganizations to more accurately reflect the intent.JANUARY 13, 2017NMX-J-009/4248/11-ANCE CSA C22.2 NO. 4248.11-07 UL 4248-114JANUARY 13, 2017 NMX-J-009/4248/11-ANCE CSA C22.2 NO. 4248.11-07 UL

40、4248-11 5No Text on This PageFuseholders Part 11: Type C (Edison Base) and Type S Plug Fuse1 GeneralThis Part is intended to be read together with the Standard for Fuseholders Part 1: GeneralRequirements hereafter referred to as Part 1. The numbering of the Clauses in this Part corresponds tolike nu

41、mbered Clauses in Part 1. The requirements of Part 1 apply unless modified by this Part. ForClauses not shown below, refer to the Standard for Fuseholders Part 1: General Requirements,NMX-J-009-4248-ANCE CSA C22.2 No. 4248.1 UL 4248-1.1.1 Scope1.1.2 These requirements cover:a) fuseholders intended f

42、or use with Type C (Edison-base) and Type S Plug Fuses asdescribed in NMX-J-009/248/11-2000-ANCE, CSA C22.2 No. 248.11, UL 248-11, Low-VoltageFuses Part 11: Plug Fuses;b) devices intended to be added to Edison-base fuseholders to reject fuses with larger ampereratings; andc) devices intended to adap

43、t Type S plug fuses for use in Edison-base fuseholders.4 Classification4.1 Plug fuse fuseholders have a short-circuit withstand rating of 10,000 A. Plug fuse fuseholders arerated 250 V or less, and may be of Edison-base or Type S base design.5 Characteristics5.1 Summary of characteristics5.1.3 Volta

44、ge and current rating5.1.3.1 Plug fuse fuseholders shall be rated 125, 127, or 250 V.5.1.3.2 Plug fuse fuseholders shall be rated 15, 20, or 30 A.JANUARY 13, 2017NMX-J-009/4248/11-ANCE CSA C22.2 NO. 4248.11-07 UL 4248-116Table 8.4AMaximum temperature limitsMaterials and components DegreesCFA. COMPON

45、ENTS1. Any bus, strap, or fuse clip 55 1312. Pressure terminal connectors used on fuseholders andmarked for use with 75C rated wire70a158aB. ELECTRICAL INSULATION GENERAL1. Wire insulation or insulating tubing 40b104b2. Electrical tape 60b140b3. Varnished cloth insulation 65b149b4. Fiber employed as

46、 electrical insulation 70b158b5. Sealing compound 55b131b6. Polymeric materials employed as electrical insulation or asa part the deterioration of which would result in a risk offire, electric shock, or injury to personsRTI-20cRTI-68caApplicable to a connector for copper wire; also applicable to a c

47、onnector for aluminum wire or an aluminum-bodiedconnector if the connector has a temperature rating of 90C (194F).bThis limitation for an insulated conductor or other material that has been investigated and found acceptable at a highertemperature shall be that higher temperature less 20 degrees Cels

48、ius (to represent the additional heating effect contributed bythe use of actual fuses).cRTI is the higher of the mechanical and electrical relative thermal indices for the polymeric material used or, for thosematerials lacking published RTI ratings, the generic thermal index, corresponding to the ma

49、terial used, as published in AnnexB, Reference 8.8.6A Verification of contactrejection member effectiveness8.6A.1 The contact-rejection member of a 20 A Type S fuseholder or adapter shall not crack or distortwhen subjected to a torque of 2.3 Nm (20 lb-in). The torque shall be applied through a threaded plug inthe manner described in Clause 8.7A.1(b).8.6A.2 The rejection member shall remain effective.8.7A Verification of screw shell secureness8.7A.1 The screw shell of