1、UL 44ISBN 0-7629-0400-3Thermoset-Insulated Wires andCablesUnderwriters Laboratories Inc. (UL)333 Pfingsten RoadNorthbrook, IL 60062-2096UL Standard for Safety for Thermoset-Insulated Wires and Cables, UL 44Fifteenth Edition, Dated March 22, 1999Revisions: This Standard contains revisions through and
2、 including May 13, 2002.Announcement Bulletin(s): This Standard contains the announcement bulletin(s) dated August 25, 1997and October 30, 1997. The announcement bulletin is located at the end of the Standard (after the adoptionbulletin(s).Text that has been changed in any manner is marked with a ve
3、rtical line in the margin. Changes inrequirements are marked with a vertical line in the margin and are followed by an effective date noteindicating the date of publication or the date on which the changed requirement becomes effective.The revised requirements are substantially in accordance with UL
4、s Bulletin(s) on this subject datedDecember 7, 2001. The bulletin(s) is now obsolete and may be discarded.The revisions dated April 1, 2002 include a reprinted title page (page1) for this Standard.Pages 70, 71, and 75 were revised on May 13, 2002 to indicate the revision dates of paragraphs 60.12,60
5、.16, 60.17, 60.34, 60.36, and 60.38.As indicated on the title page (page 1), this UL Standard for Safety is an American National Standard.Attention is directed to the note on the title page of this Standard outlining the procedures to be followedto retain the approved text of this ANSI/UL Standard.A
6、s indicated on the title page (page1), this UL Standard for Safety has been adopted by the Departmentof Defense.The master for this Standard at ULs Northbrook Office is the official document insofar as it relates to aUL service and the compliance of a product with respect to the requirements for tha
7、t product and service,or if there are questions regarding the accuracy of this Standard.ULs Standards for Safety are copyrighted by UL. Neither a printed copy of a Standard, nor the distributiondiskette for a Standard-on-Diskette and the file for the Standard on the distribution diskette should beal
8、tered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding thoseStandards shall remain the sole and exclusive property of UL.All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, ortransmitted in any form by any means, elec
9、tronic, mechanical photocopying, recording, or otherwisewithout prior permission of UL.Revisions of UL Standards for Safety are issued from time to time. A UL Standard for Safety is currentonly if it incorporates the most recently adopted revisions.UL provides this Standard as is without warranty of
10、 any kind, either expressed or implied, including butnot limited to, the implied warranties of merchantability or fitness for any purpose.MAY 13, 2002 UL 44 tr1In no event will UL be liable for any special, incidental, consequential, indirect or similar damages,including loss of profits, lost saving
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20、heir own fair and/or practical internal use.The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, figures,and/or other elements of the Standard having future effective dates as indicated in the note following theaffected item. The prior text for requirem
21、ents that have been revised and that have a future effective dateare located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice.New product submittals made prior to a specified future effective date will be judged under all of therequirements in this Standard including those re
22、quirements with a specified future effective date, unlessthe applicant specifically requests that the product be judged under the current requirements. However, ifthe applicant elects this option, it should be noted that compliance with all the requirements in thisStandard will be required as a cond
23、ition of continued Listing and Follow-Up Services after the effectivedate, and understanding of this should be signified in writing.Copyright 2002 Underwriters Laboratories Inc.MAY 13, 2002 UL 44tr2This Standard consists of pages dated as shown in the following checklist:Page Date1-2.April 1, 20023.
24、July 13, 20004 .April 1, 20025.May18,20006 .April 1, 20027.May18,20008.November 1, 20018A.April 1, 20028B-9.July 13, 200010.March 22, 199911 .April 1, 200212-13.July 13, 200014 .April 1, 200215.July 13, 200016-18 .April 1, 200219.November 1, 200120-21 .April 1, 200222-22B .July 13, 200023.March 22,
25、199924-27 .April 1, 200228-31.March 22, 199932-34B .May18,200035.March 22, 199936-36B .April 1, 200237-38.March 22, 199939 .April 1, 200240.July 13, 200041.March 22, 199942-43 .April 1, 200244.March 22, 199945 .April 1, 200246-47.July 13, 200048-50D .April 1, 200251.July 13, 200052 .May18,200053-57.
26、March 22, 199958-59.July 13, 200060.March 22, 199961 .April 1, 200262-63.March 22, 199964-68 .April 1, 200269.March 22, 199970-71.May13,200272-74 .April 1, 200275 .May13,200276-78 .April 1, 2002MAY 13, 2002 UL 44 tr3MAY 13, 2002 UL 44tr4No Text on This PageMARCH 22, 1999(Title Page Reprinted: April
27、1, 2002)1UL 44Standard for Thermoset-Insulated Wires and CablesThe First through Fifth editions were titled Rubber-Covered Wires and Cables.The Sixth through Thirteenth editions were titled Rubber-Insulated Wires andCables.First Edition November, 1917Second Edition March, 1932Third Edition March, 19
28、39Fourth Edition June, 1940Fifth Edition April, 1956Sixth Edition May, 1961Seventh Edition July, 1968Eighth Edition June, 1975Ninth Edition December, 1976Tenth Edition December, 1977Eleventh Edition February, 1983Twelfth Edition August, 1983Thirteenth Edition October, 1991Fourteenth Edition January,
29、 1997Fifteenth EditionMarch 22, 1999UL maintains this standard under the ANSI continuous maintenance procedure,resulting in each revision being designated as ANSI approved upon completionof the process. The Fifteenth Edition of UL 44, including revisions publishedthrough April 1, 2002, was designate
30、d as the American National StandardANSI/UL 44 on March 1, 2002.An effective date included as a note immediately following certain requirementsis one established by Underwriters Laboratories Inc.Approved as ANSI/UL 44 2002, March 1, 2002The Department of Defense (DoD) has adopted UL 44 on April 5, 19
31、85. Thepublication of revised pages or a new edition of this Standard will not invalidatethe DoD adoption.Comments on this standard should be made in writing to the UL-MelvilleStandards Department at 1285 Walt Whitman Road, Melville, New York117473081.ANSI/UL 44 2002Revisions of this Standard will b
32、e made by issuing revised or additional pagesbearing their date of issue. A UL Standard is current only if it incorporates themost recently adopted revisions, all of which are itemized on the transmittal noticethat accompanies the latest set of revised requirements.ISBN 0-7629-0400-3COPYRIGHT 1975,
33、2002 UNDERWRITERS LABORATORIES INC.CONTENTSFOREWORD .8INTRODUCTION1 Scope .8A2 Units of Measurement .8A3 References .8B4 Materials .8B5 Index Table .8BCONDUCTOR(S)6 Metal .167 Size, Temper, and Assembly .168 Conductor Diameter and Cross-Sectional Area .189 Metal Coating .1810 Joints .1811 Resistance .1912 Stranding .1913 Separator .22INSULATION14 Material and Application .2215 Thicknesses of Insulation .22A15.1 General .22A16 Centering .26NONMETALLIC COVERINGS AND FILLERS17 General .2618 Num
