1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 248-16 Low-Voltage Fuses Part 16: Test Limiters STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MA
2、TERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Low-Voltage Fuses Part 16: Test Limiters UL 248-16 Third Edition, Dated April 4, 2018 Summary of Topics This revision of ANSI/UL 248-16, Standard for Safety for Low-Voltage Fuses Part
3、 16: Test Limiters, is being issued to reaffirm approval as an American National Standard. No changes in requirements are involved. As noted in the Commitment for Amendments statement located on the back side of the title page, UL, CSA, and ANCE are committed to updating this tri-national standard j
4、ointly. However, the new edition dated April 4, 2018 will not be jointly issued by UL, CSA, and ANCE as this new edition addresses only UL ANSI approval dates. The editorial reaffirmation updates are substantially in accordance with Proposal(s) on this subject dated February 16, 2018. All rights res
5、erved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or
6、implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of t
7、he use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic
8、 versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on
9、 the purchasers computer system. APRIL 4, 2018 UL 248-16 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 4, 2018 UL 248-16 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHO
10、UT PERMISSION FROM UL Association of Standardization and Certication NMX-J-009/248/16-2000-ANCE First Edition Canadian Standards Association CSA C22.2 No. 248.16-00 Second Edition Underwriters Laboratories Inc. UL 248-16 Third Edition Low-Voltage Fuses Part 16: Test Limiters April 4, 2018 ANSI/UL 24
11、8-16-2004 (R2018)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commitment for Amendments This standard is issued jointly by the Association of Standardization and Certication (ANCE), the Canadian Standards Association (operating as “CSA Gr
12、oup”), and Underwriters Laboratories Inc. (UL). Comments or proposals for revisions on any part of the standard may be submitted to ANCE, CSA Group, or UL at anytime. Revisions to this standard will be made only after processing according to the standards development procedures of ANCE, CSA Group, a
13、nd UL. CSA Group and UL will issue revisions to this standard by means of a new edition or revised or additional pages bearing their date of issue. ANCE will incorporate the same revisions into a new edition of the standard bearing the same date of issue as the CSA Group and UL pages. Copyright 2000
14、 ANCE Rights reserved in favor of ANCE. ISBN 978-1-55491-642-9 2000 Canadian Standards Association All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher. This Standard is subject to review ve years from the date of pub
15、lication, and suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the following information to inquirescsagroup.org and include Proposal for change in the subject line: Standard designation (number); relevant clause, table, and/
16、or gure number; wording of the proposed change; and rationale for the change. To purchase CSA Group Standards and related publications, visit CSA Groups Online Store at shop.csa.ca or call toll-free 1-800-463-6727 or 416-747-4044. Copyright 2018 Underwriters Laboratories Inc. ULs Standards for Safet
17、y are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. This ANSI/UL Standard for Safety consists of the Th
18、ird Edition. The most recent designation of ANSI/UL 248-16 as a Reaffirmed American National Standard (ANS) occurred on April 4, 2018. 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
19、any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at https:/. To purchase UL Standards, visit ULs Standards Sales Site at http:/ HowToOrder.aspx or call toll-free 1-888-85
20、3-3503.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS PREFACE 4 1 General 6 1.1 Scope .6 4 Classication .6 5 Characteristics 6 5.2 Voltage rating 6 5.3 Current rating 6 5.5 Interrupting rating .6 5.6 Peak let-through current and cl
21、earing I 2 t characteristics .7 5.7 Test current rating 7 6 Marking 7 6.1 Marking of fuses 7 7 Construction 7 7.1 Dimensions 7 8 Tests 7 8.4 Verication of operation at rated voltage .7 8.5 Verication of peak let-through current and clearing I 2 t characteristics 8 APRIL 4, 2018 NMX-J-009/248/16-2000
22、-ANCE CSA C22.2 NO. 248.16-00 UL 248-16 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PREFACE This is the harmonized ANCE, CSA Group, and UL standard for Low-Voltage Fuses Part 16: Test Limiters. It is the rst edition of NMX-J-009/248/16-
23、2000-ANCE, the second edition of CSA C22.2 No. 248.16-00, and the third edition of UL 248-16. This edition of CSA C22.2 No. 248.16-00 supersedes the previous edition published in 1996. This edition of UL 248-16 supersedes the previous edition published on August 1, 2000. This harmonized standard was
24、 prepared by the Association of Standardization and Certication, (ANCE), CSA Group and Underwriters Laboratories Inc. (UL). The efforts and support of the Technical Harmonization Subcommittee, THSC 32B, Low Voltage Fuses, on the Harmonization of Electrotechnical Standards of the Nations of the Ameri
25、cas (CANENA), are gratefully acknowledged. This standard is considered suitable for use for conformity assessment within the stated scope of the standard. This standard was reviewed by the CSA Subcommittee on Fuses, under the jurisdiction of the CSA Technical Committee on Industrial Products and the
26、 CSA Strategic Resource Group, and has been formally approved by the CSA Technical Committee. This standard has been approved by the American National Standards Institute (ANSI) as an American National Standard. Application of Standard Where reference is made to a specic number of samples to be test
27、ed, the specied number is to be considered a minimum quantity. Note: Although the intended primary application of this standard is stated in its scope, it is important to note that it remains the responsibility of the users of the standard to judge its suitability for their particular purpose. NMX-J
28、-009/248/16-ANCE, Standard for Safety for Low-Voltage Fuses Part 16: Test Limiters is to be used in conjunction with the second edition of NMX-J-009/248/1-ANCE. The requirements for Test Limiters are contained in this Part 2 Standard and NMX-J-009/248/1-ANCE. Requirements of this Part 2 Standard, wh
29、ere stated, amend the requirements of NMX-J-009/248/1-ANCE. Where a particular subclause of NMX-J-009/248/1-ANCE is not mentioned in NMX-J-009/248/16-ANCE, the NMX-J-009/248/1-ANCE subclause applies. This CSA C22.2 No. 248.16, Standard for Safety for Low-Voltage Fuses Part 16: Test Limiters is to be
30、 used in conjunction with the third edition of CSA C22.2 No. 248.1. The requirements for Test Limiters are contained in this Part 2 Standard and CSA C22.2 No. 248.1. Requirements of this Part 2 Standard, where stated, amend the requirements of CSA C22.2 No. 248.1. Where a particular subclause of CSA
31、 C22.2 No. 248.1 is not mentioned in CSA C22.2 No. 248.16, the CSA C22.2 No. 248.1 subclause applies. This UL Standard 24816, Standard for Safety for Low-Voltage Fuses Part 16: Test Limiters, is to be used in conjunction with the third edition of UL 248-1. The requirements for Test Limiters are cont
32、ained in this Part 2 Standard and UL 248-1. Requirements of this Part 2 Standard, where stated, amend the requirements of UL 248-1. Where a particular subclause of UL 248-1 is not mentioned in UL 24816, the UL 248-1 subclause applies. APRIL 4, 2018 NMX-J-009/248/16-2000-ANCE CSA C22.2 NO. 248.16-00
33、UL 248-16 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Level of Harmonization This standard is published as an identical standard for ANCE, CSA Group and UL. An identical standard is a standard that is exactly the same in technical conte
34、nt except for national differences resulting from conicts in codes and governmental regulations. Presentation is word for word except for editorial changes. Interpretations The interpretation by the standards development organization of an identical or equivalent standard is based on the literal tex
35、t to determine compliance with the standard in accordance with the procedural rules of the standards development organization. If more than one interpretation of the literal text has been identied, a revision is to be proposed as soon as possible to each of the standards development organizations to
36、 more accurately reect the intent. APRIL 4, 2018 NMX-J-009/248/16-2000-ANCE CSA C22.2 NO. 248.16-00 UL 248-16 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Low-Voltage Fuses Part 16: Test Limiters 1 General NOTE This Part is intended to b
37、e 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 correspond to like numbered Clauses in Part 1. The requirements of Part 1 apply unless modied by this Part. For Clauses not shown below, re
38、fer to the Standard for Low-Voltage Fuses Part 1: General Requirements, NMX-J-009/248/16-ANCE CSA C22.2 No. 248.1 UL 248-1. 1.1 Scope This Part applies to test limiters calibrated to specic limits of peak let-through current and clearing I 2 ta t 250, 300, 480, or 600 V ac. 4 Classication Test limit
39、ers are non-renewable and current limiting, with test current ratings up to 200,000 A. They are calibrated to maximum peak let-through current and clearing I 2 t limits for the fuses specied in this Standard and are used for withstand testing of equipment designed to accept those fuses. Body sizes a
40、re not specied. 5 Characteristics 5.2 Voltage rating For AC, the rating shall be 250, 300, 480, or 600 V ac. 5.3 Current rating No current rating is assigned to a test limiter except in reference to (and marked as) the ampere rating for the fuse and classication it represents. 5.5 Interrupting ratin
41、g No interrupting rating is assigned to a test limiter. Instead a test current rating is assigned. See test current rating, Clause 5.7. APRIL 4, 2018 NMX-J-009/248/16-2000-ANCE CSA C22.2 NO. 248.16-00 UL 248-16 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT
42、PERMISSION FROM UL 5.6 Peak let-through current and clearing I 2 t characteristics Values of peak let-through current and clearing I 2 t at rated voltage for each test limiter shall be equal to or greater than the maximum values which correspond to the voltage, ampere rating, and classication of the
43、 fuse it represents, when tested at its assigned test current rating. 5.7 Test current rating For AC 200,000 A, unless otherwise specied. 6 Marking 6.1 Marking of fuses A test limiter shall be marked with the fuse class it represents, ampere and voltage rating, assigned test current rating, and the
44、words THIS IS NOT A FUSE. For example, Class J Test Limiter; 30 A, 600 V; 200,000 A; THIS IS NOT A FUSE. 7 Construction 7.1 Dimensions Test limiter dimensions are not specied. 8 Tests 8.4 Verication of operation at rated voltage 8.4.3 Test method Test limiters shall be tested at rated voltage, rated
45、 test current for verication of peak let-through current, and clearing I 2 t. Two samples of each rating shall be tested. APRIL 4, 2018 NMX-J-009/248/16-2000-ANCE CSA C22.2 NO. 248.16-00 UL 248-16 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FRO
46、M UL 8.5 Verication of peak let-through current and clearing I 2 t characteristics 8.5.3 Acceptability of test results Peak let-through current and clearing I 2 t values shall not be less than the limits specied for the fuse voltage rating, ampere rating, and classication of the fuse represented by the limiter. APRIL 4, 2018 NMX-J-009/248/16-2000-ANCE CSA C22.2 NO. 248.16-00 UL 248-16 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL
