1、C22.2 No. 248.10-11Low-voltage fuses Part 10: Class L 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
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17、 hereof, 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.Update No. 1 C22.2 No. 248.10-11 January 2017Note: For information about the Standards Update Service, go to shop.c
18、sa.ca or e-mail techsupportcsagroup.org.Title: Low-Voltage Fuses Part 10: Class L Fuses originally published May 2011The following revisions have been formally approved and are marked by a vertical line in the margin on the attached replacement pages:Revised Title page, copyright page, and Clause 1N
19、ew NoneDeleted None Update your copy by inserting these revised pages.Keep the pages you remove for reference.Association of Standardization and CertificationNMX-J-009/248/10-ANCESecond EditionCanadian Standards AssociationCSA C22.2 No. 248.10-11Third EditionUnderwriters Laboratories Inc.UL 248-10Th
20、ird EditionLow-Voltage Fuses Part 10: Class L FusesMay 13, 2011(Title Page Reprinted: January 13, 2017)ANSI/UL 248-10-2011 (R2015)Commitment for AmendmentsThis standard is issued jointly by the Association of Standardization and Certification (ANCE), theCanadian Standards Association (operating as “
21、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 anytime. Revisions to this standard will be made only after processing according to thestandards development procedures of ANCE, CSA Group
22、, 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 incorporate the same revisions into a new edition of the standard bearing the samedate of issue as the CSA Group and UL pages.Copyright 2017R
23、ights reserved in favor of ANCE.ISBN 978-1-55491-640-5 2017 CSA GroupAll 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 refe
24、rredto the 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; a
25、nd rationale 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 2017 Underwriters Laboratories Inc.ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy
26、 of a Standardshould 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 August 18,2015. The most
27、recent designation of ANSI/UL 248-10 as an American National Standard (ANSI)occurred on August 18, 2015. 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
28、submitted to UL at any time.Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative StandardsDevelopment System (CSDS) at https:/.To purchase UL Standards, visit Comm 2000 at http:/m- or calltoll-free 1-888-853-3503.CONTENTSPreface .41 General 51.1 Scope .54 Classification
29、55 Characteristics .55.2 Voltage rating .55.3 Current rating 55.5 Interrupting rating .55.6 Peak let-through current and clearing I2t characteristics .76 Marking .87 Construction .87.1 Dimensions .87.2 Current-carrying parts .88 Tests 108.2 Verification of temperature rise and current-carrying capac
30、ity 108.3 Verification of overload operation 118.4 Verification of operation at rated voltage 118.5 Verification of peak let-through current and clearing I2t characteristics .12JANUARY 13, 2017 NMX-J-009/248/10-ANCE CSA C22.2 NO. 248.10-11 UL 248-10 3PrefaceThis is the harmonized ANCE, CSA, and UL s
31、tandard for Low-Voltage Fuses Part 10: Class L Fuses.It is the second edition of NMX-J-009/248/10-ANCE, the third edition of CSA C22.2 No. 248.10-11, andthe third edition of UL 248-10. This edition of NMX-J-009-248/10-ANCE cancels the previous editionpublished in 2000. This edition of CSA C22.2 No.
32、248.10-11 supersedes the previous edition published in2000.This harmonized standard was prepared by the Association of Standardization and Certification (ANCE),the Canadian Standards Association (CSA), and Underwriters Laboratories Inc., (UL).This Standard is considered suitable for use for conformi
33、ty 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 Normalizacion y Certificacion, A.C., CONANCE, with the collaboration of the fusemanufacturers and users.This standard was reviewed by the C
34、SA Subcommittee on Fuses and Fuseholders, under the jurisdictionof the CSA Technical Committee on Industrial Products and the CSA Strategic Steering Committee onRequirements for Electrical Safety, and has been formally approved by the CSA Technical Committee.This standard has been approved by the Am
35、erican National Standards Institute (ANSI) as an AmericanNational Standard.A UL standard 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 spe
36、cific number of samples to be tested, the specified number is to beconsidered a minimum quantity.Note: Although the intended primary application of this standard is stated in its scope, it is important to note thatit remains the responsibility of the users of the standard to judge its suitability fo
37、r their particular purpose.Level of HarmonizationThis standard is published as an identical standard for ANCE, CSA, and UL. An identical standard is astandard that is exactly the same in technical content except for national differences resulting fromconflicts in codes and governmental regulations.
38、Presentation is word for word except for editorialchanges.InterpretationsThe 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 d
39、evelopment 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 standards developmentorganizations to more accurately reflect the intent.MAY 13, 2011NMX-J-009/248/10-ANCE CSA C22.2 NO. 248.10-11 UL 248-1
40、04Low-Voltage Fuses Part 10: Class L Fuses1 GeneralNOTE This Part is intended to be read together with the Standard for Low-Voltage Fuses Part 1: General Requirements,hereafter referred to as Part 1. The numbering of the clauses in this Part corresponds to like numbered Clauses in Part1. The require
41、ments 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-009/248/1-ANCE CSA C22.2 No. 248.1-11 UL 248-1.1.1 ScopeThis Part applies to Class L fuses rated 100 6000 A and 600 V ac. DC ratings are opt
42、ional.4 ClassificationClass L fuses are non-renewable, current-limiting bolt-in type with an interrupting rating of 200,000 A, orat the manufacturers option 300,000 A . Class L fuses are divided into nine body sizes with the maximumcurrent rating Infor each size specified in this part. Time-delay ra
43、tings are optional.5 Characteristics5.2 Voltage ratingFor AC, the rating shall be 600 V ac.The DC voltage rating may be different from the AC rating.5.3 Current ratingRefer to Figure A for the range of current ratings in each body size.5.5 Interrupting ratingFor AC, 200,000 A or 300,000 A at the man
44、ufacturers option (300,000 A not applicable in Mexico).For DC, the preferred ratings are 20,000, 50,000, 100,000, 150,000, 200,000, or 300,000 A.JANUARY 13, 2017 NMX-J-009/248/10-ANCE CSA C22.2 NO. 248.10-11 UL 248-10 5JANUARY 13, 2017NMX-J-009/248/10-ANCE CSA C22.2 NO. 248.10-11 UL 248-106No Text o
45、n This PageCSA Standards Update ServiceC22.2 No. 248.10-11May 2011Title:Low-voltage fuses Par t 10: Class L fusesPagination:12 pages, 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
46、Standards Update ServiceThe List ID that you will need to register for updates to this publication is 2421213.If you require assistance, 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.Bl
47、ank pageAssociation of Standardization and CertificationNMX-J-009/248/10-ANCESecond EditionCanadian Standards AssociationCSA C22.2 No. 248.10-11Third EditionUnderwriters Laboratories Inc.UL 248-10Third EditionLow-Voltage Fuses Part 10: Class L FusesMay 13, 2011ANSI/UL 248-10-2011Commitment for Amend
48、mentsThis standard is issued jointly by the Association of Standardization and Certification (ANCE), theCanadian Standards Association (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.Revisi
49、ons to this standard will be made only after processing according to the standards developmentprocedures of ANCE, CSA, and UL. CSA and UL 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 ANCE.ISBN 978-1-55491-640-5 2011 Canadian Standar
