Ansi/icea s-73-532 nema wc 57



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10-15-03


ANSI/ICEA S-73-532

NEMA WC 57

Standard for control, thermocouple extension, and instrumentation cables




Approved as an American National Standard

ANSI Approval Date: ,  ????
Insulated Cable Engineers Assoc., Inc. Publication No. S-73-532

NEMA Standards Publication No. WC 57-2014
Standard for Control, Thermocouple Extension, and Instrumentation Cables


Prepared and Sponsored by:
Insulated Cable Engineers Association, Inc.

P.O. Box 1568

Carrollton, Georgia 30112

Published by:
National Electrical Manufacturers Association

1300 North 17th Street, Suite 1847

Rosslyn, Virginia 22209
www.nema.org
© Copyright 2004 by the National Electrical Manufacturers Association (NEMA) and the Insulated Cable Engineers Association, Incorporated (ICEA). All rights including translation into other languages reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Literary and Artistic Works, and the International and Pan American Copyright Conventions.

NOTICE AND DISCLAIMER

The information in this publication was considered technically sound by the consensus of persons engaged in the development and approval of the document at the time it was developed. Consensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this document.

The National Electrical Manufacturers Association (NEMA) and the Insulated Cable Engineers Association (ICEA) standards and guideline publications, of which the document contained herein is one, are developed through a voluntary consensus standards development process. This process brings together persons who have an interest in the topic covered by this publication. While NEMA and ICEA administers the process and establishes rules to promote fairness in the development of consensus, they do not independently test, evaluate, or verify the accuracy or completeness of any information or the soundness of any judgments contained in its standards and guideline publications.

NEMA and ICEA disclaims liability for personal injury, property, or other damages of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, application, or reliance on this document. NEMA and ICEA disclaims and makes no guaranty or warranty, expressed or implied, as to the accuracy or completeness of any information published herein, and disclaims and makes no warranty that the information in this document will fulfill any of your particular purposes or needs. NEMA and ICEA do not undertake to guarantee the performance of any individual manufacturer or seller’s products or services by virtue of this standard or guide.

In publishing and making this document available, NEMA and ICEA are not undertaking to render professional or other services for or on behalf of any person or entity, nor is NEMA and ICEA undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. Information and other standards on the topic covered by this publication may be available from other sources, which the user may wish to consult for additional views or information not covered by this publication.

NEMA and ICEA have no power, nor do they undertake to police or enforce compliance with the contents of this document. NEMA and ICEA do not certify, test, or inspect products, designs, or installations for safety or health purposes. Any certification or other statement of compliance with any health or safety-related information in this document shall not be attributable to NEMA and ICEA and is solely the responsibility of the certifier or maker of the statement.



CONTENTS—CONDENSED*

Section


GENERAL 1

CONDUCTORS 2

INSULATIONS 3

SHIELDINGS AND COVERINGS 4

ASSEMBLY, FILLERS, AND CONDUCTOR IDENTIFICATION 5

TESTING AND TEST METHODS 6

SPECIAL CONSTRUCTIONS 7

APPENDICES 8

*See next pages for a more detailed Table of Contents.

CONTENTS


Foreword iv

Scope v


Section 1
GENERAL 1

1.1 GENERAL INFORMATION 1

1.2 INFORMATION TO BE SUPPLIED BY PURCHASER 2

Section 2


CONDUCTORS 3

2.1 GENERAL 3

2.2 WIRES, PHYSICAL AND ELECTRIC PROPERTIES 3

2.3 COPPER CONDUCTORS 3

2.4 CONDUCTORS FOR THERMOCOUPLE EXTENSION WIRES 6

Section 3


INSULATIONS 9

3.1 GENERAL 9

3.2 MATERIALS 9

3.3 THICKNESS 9

3.4 REQUIREMENTS 11

3.5 VOLTAGE TESTS 13

3.6 INSULATION RESISTANCE 18

3.7 TYPE A FLAME TEST 18

3.8 TYPE B FLAME TEST 18

Section 4


SHIELDINGS AND COVERINGS 19

4.1 SHIELDING—GENERAL 19

4.2 JACKETS 20

4.3 METALLIC AND ASSOCIATED COVERINGS 22

Section 5
ASSEMBLY, FILLERS, AND CONDUCTOR IDENTIFICATION 33

5.1 ASSEMBLY OF MULTIPLE CONDUCTOR CABLES 33

5.2 FILLERS 33

5.3 BINDERS 33

5.4 CONDUCTOR IDENTIFICATION 34

Section 6


TESTING AND TEST METHODS 35

6.1 TESTING—GENERAL 35

6.2 CONDUCTOR TEST METHODS 35

6.3 THICKNESS MEASUREMENTS FOR INSULATIONS AND NONMETALLIC JACKETS 35

6.4 PHYSICAL AND AGING TESTS FOR INSULATIONS AND JACKETS 35

6.5 TENSILE STRENGTH TEST 36

6.6 TENSILE STRESS TEST 36

6.7 ELONGATION TEST 36

6.8 SET TEST 36

6.9 AGING TESTS 37

6.10 OZONE RESISTANCE TEST 38

6.11 THICKNESS OF COVERINGS 38

6.12 ENVIRONMENTAL CRACKING 38

6.13 ABSORPTION COEFFICIENT 38

6.14 ACCELERATED WATER ABSORPTION 38

6.15 COLD BEND 39

6.16 FLAME TESTING 39

6.17 VOLTAGE TESTS 41

6.18 INSULATION RESISTANCE 41

6.19 SPECIFIC SURFACE RESISTIVITY 41

6.20 SHIELD CONTINUITY 41

6.21 SHIELD ISOLATION 41

6.22 DIELECTRIC STRENGTH RETENTION 41

Section 7


SPECIAL CONSTRUCTIONS 43

7.1 LOW SMOKE, HALOGEN-FREE (LSHF) CABLES


43

7.2 125°C CABLE 49

Section 8
APPENDICES 53

Appendix A


INDUSTRY STANDARD REFERENCES
(Normative) 53

Appendix B


ADDITIONAL CONDUCTOR INFORMATION
(Informative) 56

Appendix C


REPRESENTATIVE VALUES OF TENSILE STRENGTH AND ELONGATION
FOR NON-MAGNETIC ARMOR MATERIALS
(Informative) 57

Appendix D


FLAME TESTING FINISHED CABLE
(Informative) 58

Appendix E


CONDUCTOR IDENTIFICATION FOR CONTROL CABLES
(Informative) 59

Appendix F


RECOMMENDED BENDING RADII FOR CABLES
(Informative) 69

Appendix G


ACCEPTANCE TESTING AFTER INSTALLATION
(Informative) 71

Appendix H


OTHER TEST METHODS FOR INSTRUMENTATION CABLES
(Informative) 72





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