UL 2556-2015 UL Standard for Safety Wire and Cable Test Methods (Fourth Edition).pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 2556 Wire and Cable Test MethodsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER R

2、EPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Wire and Cable Test Methods, UL 2556 Fourth Edition, Dated December 15, 2015 Summary of Topics This New Edition of ANSI/UL 2556 is being issued to incorporate several substantive changes. The new requirements are subst

3、antially in accordance with Proposal(s) on this subject dated May 1, 2015 and September 11, 2015. All rights reserved. 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 wi

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8、ure effective dates as indicated in the preface. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. DECEMBER 15, 2015 UL 2556 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR

9、FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 15, 2015 UL 2556 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Association of Standardization and Certication NMX-J-556-ANCE-2015 Fourth Editi

10、on CSA Group CSA C22.2 No. 2556-15 Fourth Edition Underwriters Laboratories Inc. UL 2556 Fourth Edition Wire and Cable Test Methods December 15, 2015 ANSI/UL 2556-2015UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commitment for Amendments

11、This standard is issued jointly by the Association of Standardization and Certication (ANCE), the Canadian 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, CSA Group, o

12、r UL at anytime. Revisions to this standard will be made only after processing according to the standards development procedures of ANCE, CSA Group, and 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. AN

13、CE 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 2015 ANCE Rights reserved in favor of ANCE. ISBN 978-1-77139-930-2 2015 CSA Group All rights reserved. No part of this publication may be reproduced in an

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17、regarding those Standards shall remain the sole and exclusive property of UL. This ANSI/UL Standard for Safety consists of the Fourth Edition including revisions through December 15, 2015. The most recent designation of ANSI/UL 2556 as an American National Standard (ANSI) occurred on December 15, 20

18、15. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page (front and back), or the Preface. The National Difference Page and IEC Foreword are also excluded from the ANSI approval of IEC-based standards. Comments or proposals for revisions on any part of the Stan

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20、FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS PREFACE 6 1 Scope .8 2 General 8 2.1 Units of measure .8 2.2 Normative references .8 2.3 Safety 11 2.4 Denitions 12 2.5 Test temperature 12 2.6 Reports 12 2.7 General requirements 13 3 Conductor tests 13 3.1 Conductor diameter

21、13 3.2 Cross-sectional area by mass (weight) method 14 3.3 Cross-sectional area by diameter method 22 3.4 DC resistance .23 3.5 Physical properties of conductors (tensile strength, elongation at break, and ultimate strength) .25 3.6 High-current heat cycling for aluminum conductors 30 3.7 Length of

22、lay 32 4 Insulation, overall covering, and jacket materials tests 33 4.1 Thickness 33 4.2 Physical properties (ultimate elongation and tensile strength) .38 4.3 Dry temperature rating of new materials (long-term aging test) 47 4.4 Carbon black content 49 5 Components tests 50 5.1 Coverage of brous b

23、raids 50 5.2 Coverage of shielding (wraps and braids) 51 5.3 Saturation 52 6 Electrical tests for nished wire and cable 53 6.1 Continuity 53 6.2 Dielectric voltage-withstand .55 6.3 Dielectric breakdown .58 6.4 Insulation resistance .59 6.5 Capacitance and relative permittivity .63 6.6 Stability fac

24、tor .65 6.7 Spark 66 6.8 Standard arcing test .69 6.9 Flex arcing test 70 6.10 Jacket resistance .73 6.11 AC leakage current test through insulation 74 6.12 AC leakage current test through jacket 76 6.13 Resistance of armor 77 7 Mechanical tests for nished wire and cable 78 7.1 Fall-in of extruded m

25、aterials 78 7.2 Heat shock .79 7.3 Heat shock resistance .81 7.4 Shrinkback .82 7.5 Shrinkback in air 83 7.6 Cold bend 84 DECEMBER 15, 2015 NMX-J-556-ANCE-2015 CSA C22.2 NO. 2556-15 UL 2556 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 7.

26、7 Cold impact .86 7.8 Deformation 88 7.9 Hot creep elongation and hot creep set 90 7.10 Abrasion resistance 93 7.11 Crush resistance .95 7.12 Crush resistance (accelerated compression rate) .96 7.13 Impact resistance 98 7.14 Dielectric breakdown after glancing impact .100 7.15 Flexibility at ROOM TE

27、MPERATURE after aging 102 7.16 Flexibility of separator tape under a jacket .103 7.17 Flexibility of armored cable and metal-sheathed cable .105 7.18 Swelling and blistering when immersed in liquid .107 7.19 Durability of ink printing 108 7.20 Color coating .110 7.21 Mechanical strength .112 7.22 St

28、rength and elongation of cable in tension .113 7.23 Bend test on nylon covered conductors 114 7.24 Tightness of insulation .115 7.25 Tightness of armor 117 7.26 Flexing of shielded cables 118 7.27 Mandrel pinch of -R cords 120 7.28 Mandrel crush of -R cords 121 7.29 Flexing of -R cords 122 7.30 Armo

29、red cable bushing insertion 124 8 Environmental tests for nished wire and cable .125 8.1 Copper corrosion .125 8.2 Ozone resistance 127 8.3 Copper sulfate test for zinc coatings on formed and unformed steel strip (preece test) .130 9 Burning characteristics tests .133 9.1 FT2/FH/Horizontal ame 133 9

30、.2 Burning particles (dropping) .136 9.3 FT1.137 9.4 FV-2/VW-1 139 9.5 FV-1/Vertical ame .142 9.6 Vertical tray ame tests (Method 1 Vertical tray and Method 2 FT4) 142 9.7 ST1 limited smoke 148 9.8 Fire propagation/RPI 151 9.9 Smoke emission .155 9.10 Halogen acid gas emission .159 9.11 Acid gas emi

31、ssion .163 9.12 Flame test for portable cables/FT5 (United States and Canada only) 169 Tables .171 Figures 176 Annex A (informative) Conductor removal from insulation for tubular specimens A.1 Method 1: Stranded conductors 216 A.2 Method 2: Stranded or solid conductors .216 DECEMBER 15, 2015 NMX-J-5

32、56-ANCE-2015 CSA C22.2 NO. 2556-15 UL 2556 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Annex B (informative) Determination of density Annex C (informative) Sample calculation for the determination of ultimate elongation or tensile stren

33、gth at 300 d C.1 Elongation .219 C.2 Tensile strength 219 Annex D (normative) Establishment of parameters and requirements for short-term air oven aging test Annex E (normative) Determination of temperature correction factor Annex F (normative) Procedure and calculations for determining the degree o

34、f coverage of brous coverings Annex G (normative) Calculation of coverage of shielding (wraps and braids) Annex H (normative) Test enclosure and exhaust duct H.1 Test enclosure .232 H.2 Exhaust duct .232 H.3 Exhaust fan 232 H.4 Air velocity measurements .233 H.4.1 Within the exhaust duct .233 H.4.2

35、Within the enclosure 234 H.5 Smoke measuring equipment 234 Annex I (informative) Conversion of pH to acid gas (as % HCl) and acid gas (as % HCl) to pH Annex J (informative) Correlation of NMX wire and cable test method standards with UL 2556/CSA C22.2 No. 2556 DECEMBER 15, 2015 NMX-J-556-ANCE-2015 C

36、SA C22.2 NO. 2556-15 UL 2556 5UL 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 Wire and Cable Test Methods. It is the Fourth edition of NMX-J-556-ANCE, the Fourth edition of

37、CSA C22.2 No. 2556, and the Fourth edition of UL 2556. This edition of NMX-J-556-ANCE supersedes the previous edition published on March 22, 2013. This edition of CSA C22.2 No. 2556 supersedes the previous edition published on March 22, 2013. This edition of UL 2556 supersedes the previous edition p

38、ublished on March 22, 2013. This harmonized standard was prepared by the Association of Standardization and Certication (ANCE), CSA Group, and Underwriters Laboratories Inc. (UL). The efforts and support of the Technical Harmonization Committee for Wire and Cable Test Methods, of the Council on the

39、Harmonization of Electrotechnical Standards of the Nations of the Americas (CANENA), are gratefully acknowledged. This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard. The present Mexican standard was developed by the WG Metodos de Prueba par

40、a Conductores, from CT 20 Conductores belonging the Comite de Normalizacin de la Asociacin de Normalizacin y Certicacin, A.C., CONANCE, with the collaboration of the manufacturers and users of electric conductors. This standard was reviewed by the CSA Integrated Committee on Test Methods for Wires a

41、nd Cables, under the jurisdiction of the CSA Technical Committee on Wiring Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the CSA Technical Committee. This standard has been approved by the American National Standards Instit

42、ute (ANSI) as an American National Standard. Where reference is made to a specic number of samples to be tested, 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

43、 the responsibility of the users of the standard to judge its suitability for their particular purpose. Level of harmonization This standard uses the IEC format but is not based on, nor is it considered equivalent to, an IEC standard. This standard is published as an equivalent standard for ANCE, CS

44、A Group, and UL. An equivalent standard is a standard that is substantially the same in technical content, except as follows: Technical national differences are allowed for codes and governmental regulations as well as those recognized as being in accordance with NAFTA Article 905, for example, beca

45、use of fundamental climatic, geographical, technological, or infrastructural factors, scientic justication, or the level of protection that the country considers appropriate. Presentation is word for word except for editorial changes. DECEMBER 15, 2015 NMX-J-556-ANCE-2015 CSA C22.2 NO. 2556-15 UL 25

46、56 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Reasons for differences from IEC This standard provides requirements for insulated wires and cables for use in accordance with the electrical installation codes of Canada, Mexico, and the U

47、nited States. At present there is no IEC standard for wires and cables for use in accordance with these codes. Therefore, this standard does not employ any IEC standard for base requirements. Interpretations The interpretation by the standards development organization of an identical or equivalent s

48、tandard is based on the literal text 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 sta

49、ndards development organizations to more accurately reect the intent. DECEMBER 15, 2015 NMX-J-556-ANCE-2015 CSA C22.2 NO. 2556-15 UL 2556 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Wire and Cable Test Methods 1 Scope 1.1 This standard describes the apparatus, test methods, and formulas to be used in carrying out the tests and calculations required by wire and cable sta