NEMA WC 54-2013 Guide for Frequency of Sampling Extruded Dielectric Power Control Instrumentation and Portable Cables for Test (JOINT PUBLICATION - NEMA WC 54 ICEA T-26-465).pdf

1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI/NEMA WC 54-2013Guide for Frequency of Sampling Extruded Dielectric Power, Control, Instrumentation, and Portable Cables for TestApproved as an American National Standard ANSI Approval Date: 12/13/2012 Insulated Cable Enginee

2、rs Assoc., Inc. Publication No. ICEA T-26-465 NEMA Standards Publication No. WC 54-2013 Guide for Frequency of Sampling Extruded Dielectric Power, Control, Instrumentation, and Portable Cables for Test Published by: National Electrical Manufacturers Association 1300 North 17th Street Rosslyn, Virgin

3、ia 22209 Copyright 2013 by the National Electrical Manufacturers Association and the Insulated Cable Engineers Association, Incorporated. All rights including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Literary and

4、Artistic Works, and the International and Pan American Copyright Conventions. ANSI/NEMA WC 54/ICEA T-26-465-2013 Page ii Copyright 2012 by National Electrical Manufacturers Association and the Insulated Cable Engineers Association, Incorporated NOTICE AND DISCLAIMER The information in this publicati

5、on 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 Nation

6、al 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

7、 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 a

8、ny judgements 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, a

9、pplication, 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 partic

10、ular purposes or needs. NEMA and ICEA do not undertake to guarantee the performance of any individual manufacturer or sellers 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

11、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 judgement or, as appropriate, seek the advice of a competent professional in dete

12、rmining 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

13、 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

14、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. ANSI/NEMA WC 54/ICEA T-26-465-2013 Page iii Copyright 2013 by National Electrical Manufacturers Association and the Insulated Cable Engineers Associati

15、on, Incorporated CONTENTS Page Foreword iv Section 1 GENERAL 1 1.1 Scope1 1.2 Definitions 1 Section 2 SAMPLES.2 2.1 Selection of Samples 2 2.1.1 Sample for Tests on Cable or Specimens from Cable .2 2.1.2 Samples for Tests on Conducting Materials Intended for Extrusion 2 2.1.3 Sample Plans for Other

16、Tests 2 2.2 Sample Conformance 2 2.3 Resampling 2 Section 3 SAMPLING PLANS .3 3.1 Plan A3 3.2 Plan B3 3.3 Plan C3 3.4 Plan D3 3.5 Plan E3 3.6 Plan F 5 3.7 Plan G .5 3.8 Plan H5 3.9 Plan I .5 3.10 Plan J.5 3.11 Plan K 5 3.11 Plan L. .4 Section 4 SCHEDULE OF TESTS AND APPLICABLE SAMPLING PLANS .6 ANSI

17、/NEMA WC 54/ICEA T-26-465-2013 Page iv Copyright 2013 by National Electrical Manufacturers Association and the Insulated Cable Engineers Association, Incorporated Foreword This Guide for Frequency of Sampling of Extruded Dielectric Power, Control, Instrumentation, and Portable Cables for Test was de

18、veloped by the Insulated Cable Engineers Association, Inc. and was approved by the National Electrical Manufacturers Association. ICEA/NEMA Standards are adopted in the public interest and are designed to eliminate misunderstandings between the manufacturers and the user and to assist the user in se

19、lecting and obtaining the proper product for his or her particular need. The user of this Standards Publication is cautioned to observe any health or safety regulations and rules relative to the use of the test procedures covered by this document. Requests for interpretation of this Standard must be

20、 submitted in writing to the Insulated Cable Engineers Association, Inc., P.O. Box 1568, Carrollton, GA 30112. An official written interpretation will be provided by the Association. Suggestions for improvement gained in the use of this publication will be welcomed by the Association ANSI/NEMA WC 54

21、/ICEA T-26-465-2013 Page 1 Copyright 2013 by National Electrical Manufacturers Association and the Insulated Cable Engineers Association, Incorporated Section 1 GENERAL 1.1 Scope This guide provides a combination of plans for the frequencies at which cable samples may be obtained for tests to determ

22、ine conformance to the appropriate requirements of ICEA Standards Publications. Valid statistical sampling frequencies other than those listed herein are acceptable if evidence of statistical control can be demonstrated. This guide applies only to extruded dielectric power, control, instrumentation,

23、 and portable cables. This guide does not apply to those requirements to which each production or shipping length of completed cable must comply as specified in the applicable ICEA Standards. 1.2 Definitions The following definitions apply to this guide. sample: A piece or section of cable taken fro

24、m a production or shipping length or small quantity taken from a lot of material before application to the cable. specimen: A test unit prepared from a sample. sampling plan: A procedure for taking samples as a function of the number of production or shipping lengths or reels or quantity of cable. (

25、The twelve sampling plans used in this ICEA guide are shown in Section 2.) lot: A quantity of cable or material produced at the same location under the same manufacturing conditions during the same time period. metric conversion: To convert feet to meters, multiply by 0.305. To convert kcmil to squa

26、re millimeters, multiply by 0.507. To convert inches to millimeters, multiply by 25.4.ANSI/NEMA WC 54/ICEA T-26-465-2013 Page 2 Copyright 2013 by National Electrical Manufacturers Association and the Insulated Cable Engineers Association, Incorporated Section 2 SAMPLES 2.1 Selection of Samples 2.1.1

27、 Sample for Tests on Cable or Specimens from Cable Each cable sample shall be taken from an accessible end of different coils or reels. Each sample shall be traceable to the coil or reel from which it was selected. 2.1.2 Samples for Tests on Conducting Materials Intended for Extrusion One sample of

28、material for each specified test shall be molded from each lot of material intended for extrusion on cable. 2.1.3 Sample Plans for Other Tests A sampling plan for other tests specified in an ICEA Standards Publication shall be selected in accordance with Section 3. 2.2 Sample Conformance If all of t

29、he samples pass the test specified in a standard, the quantity of cable that they represent shall be considered as meeting the requirements of that standard. 2.3 Resampling If any sample fails to pass a test specified in a standard, the length of cable from which the sample was taken shall be consid

30、ered as not meeting the requirements of that standard and another sample shall be taken from each of two other lengths of cable in the quantity of cable under test. If either of the second samples fail to pass the test, the quantity of cable shall be considered as not meeting the requirements of tha

31、t standard. If both such second samples pass the test, the quantity of cable (except the length represented by the first sample) shall be considered as meeting the requirements of the standard. Failure of any sample shall not preclude resampling and retesting the length of cable from which the origi

32、nal sample was taken. ANSI/NEMA WC 54/ICEA T-26-465-2013 Page 3 Copyright 2013 by National Electrical Manufacturers Association and the Insulated Cable Engineers Association, Incorporated Section 3 SAMPLING PLANS 3.1 Plan A Extruder Run Length - feet (meters) Conductor Size - kcmil (mm2) Number of S

33、amples less than 2,000 (610) less than 250 (127) 0 2,000 to 50,000 (610 to 15,250) less than 250 (127) 1 each additional 50,000 (15,250) less than 250 (127) 1 less than 1,000 (305) 250 (127) and larger 0 1,000 to 25,000 (305 to 7,625) 250 (127) and larger 1 each additional 25,000 (7,625) 250 (127) a

34、nd larger 1 3.2 Plan B Quantity of Completed Cable Used in Determining Samples - feet (meters) Number of Samples 0 to 10,000 (3,050) 0 10,001 to 50,000 (3,050 to15,250) 1 Each additional 100,000 (30,500) or fraction thereof 1 3.3 Plan C One test for each 50,000 feet (15,250 m) of cable or at least o

35、nce per cable core extruder run. 3.4 Plan D Three samples shall be taken per insulation extruder run. The samples shall be taken near the beginning, near the middle and near the end of each extruder run. The middle sample shall be eliminated if the extruder run is to be shipped in one continuous len

36、gth. 3.5 Plan E Type Test: For Insulation and Polymeric Shield Materials - One sample to be tested and no other samples need be tested unless the material formula has been changed. Test report will be available upon request. ANSI/NEMA WC 54/ICEA T-26-465-2013 Page 4 Copyright 2013 by National Electr

37、ical Manufacturers Association and the Insulated Cable Engineers Association, Incorporated For Completed Cable Designs - One sample to be tested and no other samples need be tested unless insulation type, outer jacket, or cable design has been changed. Test report will be available upon request but

38、not necessarily on purchasers exact conductor size and voltage level. ANSI/NEMA WC 54/ICEA T-26-465-2013 Page 5 Copyright 2013 by National Electrical Manufacturers Association and the Insulated Cable Engineers Association, Incorporated 3.6 Plan F One sample from each end of a manufacturers master le

39、ngth. One sample from the outer end of each length is sufficient if at least one sample is taken every 10,000 feet (3,050 m). 3.7 Plan G One test for each 50,000 feet (15,250 m) or at least once per jacket extruder run. 3.8 Plan H One test per shipping length. 3.9 Plan I Each lot of material used fo

40、r extrusion shall be tested on a sample taken from the cable. 3.10 Plan J Quantity of Shipping Lengths Per Extruder Run Number of Tests 1 - 2 each shipping length 3 - 19 2 20 and greater 10% of shipping lengths (Fractions shall be rounded to the next higher integer value) 3.11 Plan K Once per month

41、per compound mixing line. 3.12 Plan L Each lot of material intended for extrusion on the cable. ANSI/NEMA WC 54/ICEA T-26-465-2013 Page 6 Copyright 2013 by National Electrical Manufacturers Association and the Insulated Cable Engineers Association, Incorporated Section 4 SCHEDULE OF TESTS AND APPLIC

42、ABLE SAMPLING PLANS Test Conductor Stress Control Layer 0-2000 Volt Insulation 2001-46 kV Insulation Insulation Shield Jacket Cable Electrical Conductor dc Resistance 100% Voltage Tests 100% Insulation Resistance E E Dissipation Factor, Capacitance, Permittivity E E Accelerated Water Absorption Test

43、 (EM-60) E E Permittivity and Voltage Withstand for Nonconducting Stress Control Layers L Specific Surface Resistivity E U-Bend Discharge Resistance E Track Resistance E Volume Resistivity I I Dielectric Constant and Dissipation Factor E Semiconducting Jacket Radial Resistivity G Dry Electric Test f

44、or EPR Class III Insulation E Discharge Resistance Test for EPR Class III and IV K Dissipation Factor Characterization Test E Dielectric Strength Retention A Short-Term Dielectric Strength C Cold Bend/Dielectric Strength C Dimensional Measurements Thickness of Components Over a Conductor J J J J J J

45、 Diameter Over Cable Components F F F Indent G Protrusion, and Irregularity F F Physical Demands Adhesion (Stripping Force) D Cold Bend A A ANSI/NEMA WC 54/ICEA T-26-465-2013 Page 7 Copyright 2013 by National Electrical Manufacturers Association and the Insulated Cable Engineers Association, Incorpo

46、rated Heat Distortion A A Flexibility Test for Interlocked Armor B Tear Resistance G ANSI/NEMA WC 54/ICEA T-26-465-2013 Page 8 Copyright 2013 by National Electrical Manufacturers Association and the Insulated Cable Engineers Association, Incorporated Test Conductor Stress Control Layer 0-2000 Volt I

47、nsulation 2001 -46,000 Volt Insulation Insulation Shield Jacket Cable Physical Demands (continued) Gravimetric Water Absorption E E Hot Creep Test D D G Vertical Tray Flame Test E Tensile Strength Test A/I* I A/I* Tensile Stress Test A/I* A/I* Elongation Test A/I* I A/I* Set Test A/I* A/I* Oven Agin

48、g Test L A/I* I L A/I* Oil Immersion Test A A Brittleness E E E Absorption Coefficient E E Heat Shock A A Environmental Cracking E E Flexibility Test for Continuous Corrugated Armor B Shrinkback Test C Wafer Boil Test D D Air Pressure Aging A Crack Resistance (Wrap) A Flame Resistance C Ozone Resist

49、ance C Mineral Filler Content (Braided Cables) A C Melting A C Dripping A C Bending (Braided Cable) A C Longitudinal Water Block Cable Test G/E Conductor Water Penetration Test C/E *Manufacturers can use either Plan based on the difficulty of tracking component material lots. NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION 1300 NORTH 17TH STREET, SUITE 900 ROSSLYN. VA 22209www.NEMA.orgTO ORDER ADDITIONAL NEMA STANDARDS VISITWWW.GLOBAL.IHS.COM OR CALL 1-800-854-7179