NEMA C119 4-2011 Electric Connectors - Connectors for Use Between Aluminum-to-Aluminum or Aluminum-to-Copper Conductors Designed for Normal Operation at or Below 93 Degrees C and C.pdf

1、 ANSI C119.4-2011 American National Standard for Electric Connectors Connectors for Use Between Aluminum-to-Aluminum and Aluminum-to-Copper Conductors Designed for Normal Operation at or Below 93C and Copper-to-Copper Conductors Designed for Normal Operation at or Below 100C ANSI C119.4-2011 America

2、n National Standard for Electric Connectors Connectors for Use Between Aluminum-to-Aluminum and Aluminum-to-Copper Conductors Designed for Normal Operation at or Below 93C and Copper-to-Copper Conductors Designed for Normal Operation at or Below 100C Secretariat: National Electrical Manufacturers As

3、sociation Approved March 30, 2011 American National Standards Institute, Inc. ANSI C119.4-2011 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.

4、Consensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this document. ANSI standards and guideline publications, of which the document contained herein is one, are developed through a voluntary consensus standards development proc

5、ess. This process brings together volunteers and/or seeks out the views of persons who have an interest in the topic covered by this publication. While NEMA administers the process to promote fairness in the development of consensus, it does not write the document and it does not independently test,

6、 evaluate, or verify the accuracy or completeness of any information or the soundness of any judgments contained in its standards and guideline publications. NEMA disclaims liability for any personal injury, property, or other damages of any nature whatsoever, whether special, indirect, consequentia

7、l, or compensatory, directly or indirectly resulting from the publication, use of, application, or reliance on this document. NEMA disclaims and makes no guaranty or warranty, express or implied, as to the accuracy or completeness of any information published herein, and disclaims and makes no warra

8、nty that the information in this document will fulfill any of your particular purposes or needs. NEMA does 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,

9、NEMA is not undertaking to render professional or other services for or on behalf of any person or entity, nor is NEMA 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

10、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 c

11、overed by this publication. NEMA has no power, nor does it undertake to police or enforce compliance with the contents of this document. NEMA does not certify, test, or inspect products, designs, or installations for safety or health purposes. Any certification or other statement of compliance with

12、any health or safetyrelated information in this document shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement. ANSI C119.4-2011 i AMERICAN NATIONAL STANDARD Approval of an American National Standard requires verification by ANSI that the requi

13、rements for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreem

14、ent means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. The use of American National Standards is completely voluntary; their existence does not in any resp

15、ect preclude anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American National Standards Institute does not develop standards and will in no circumstances give an interpr

16、etation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretations should be addressed to the secretariat or sponsor whose

17、name appears on the title page of this standard. Caution Notice: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers o

18、f American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Published by National Electrical Manufacturers Association 1300 North 17th Street, Rosslyn, VA 22209 Copyright 2011 by National Electrical Manufacturers Ass

19、ociation. All rights reserved 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. No part of this publication may be reprod

20、uced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. Printed in the United States of America ANSI C119.4-2011 ii ANSI C119.4-2011 iii Contents Foreword vi 1 Scope and Purpose 1 1.1 Scope . 1 1.2 Purpose 1 1.3 Definitions 1 2 Referen

21、ced Standards . 2 3 Test Conditions . 2 3.1 General 2 3.2 Current Cycle Tests . 2 3.3 Thermal Stability of All Copper Systems . 3 3.4 Mechanical Tests . 3 4 Performance Requirements . 3 4.1 General 3 4.2 Sample Failure . 3 4.3 Current Cycle Resistance Stability 3 4.3.1 CCT . 3 4.3.2 CCST 3 4.4 Curre

22、nt Cycle Temperature Stability . 3 4.4.1 CCT . 4 4.4.2 CCST 4 4.5 Copper System Thermal Stability 4 4.5.1 Thermal Stability . 4 4.5.2 Determination of Thermal Stability 4 4.6 Tensile Strength and Rated Conductor Strength 5 4.6.1 Tensile Strength 5 4.6.2 Rated Conductor Strength 5 4.6.3 Classes of Te

23、nsile Strength 5 4.7 Tap Connector . 5 4.8 Tee Connector . 6 4.9 Wye Connector 6 4.10 Bolt Tightening . 6 4.11 Reusable Connectors 6 4.12 Substantive Change to a Product 6 5 Test Procedures, General 6 5.1 Connector Family Sample Set . 6 5.2 Test Conductors 6 5.3 Test Assembly Methods 7 5.3.1 Conduct

24、or Preparation for Electrical Tests . 7 5.3.2 Conductor Preparation for Mechanical Tests . 7 5.3.3 Connector Preparation 7 5.3.4 Connector Installation . 7 6 Current Cycle Test Procedures 7 6.1 General 7 6.2 Test Assembly . 7 6.2.1 Conductors 7 6.2.2 Connectors 8 6.3 Equalizers 8 6.4 Conductor Lengt

25、hs 8 6.5 Control Conductor 8 6.5.1 Equivalent Aluminum/Copper Conductors 8 6.5.2 Multiple Control Conductors 8 6.6 Loop Configuration and Location . 9 ANSI C119.4-2011 iv 6.6.1 CCT Method 9 6.6.2 CCST Method . 9 6.7 Ambient Conditions 9 6.8 Test Current . 9 6.8.1 CCT Current and Temperature Conditio

26、ns . 9 6.8.2 CCST Current and Temperature Conditions 9 6.9 Current Cycle Period . 9 6.9.1 CCT and CCST Current Cycle-ON Period 10 6.9.2 CCT Current Cycle-OFF Period 10 6.9.3 CCST Current Cycle-OFF Period . 10 6.10 Measurements . 10 6.10.1 Temperature Measurements 10 6.10.2 Resistance Measurements .

27、10 6.11 Maximum Number of Current Cycles 11 7 Mechanical Test Procedures 11 7.1 General 11 7.2 Test Connectors 11 7.3 Pullout Test 11 7.3.3 Tensile Strength 11 7.3.3.1 Sustained Load . 11 7.3.4 Maximum Load 12 7.4 Bolt Tightening Test . 12 7.5 Conductor Damage Test 13 8 Copper System Stability Test

28、. 13 9 Test Report . 13 10 Connector Marking . 14 11 Installation Instructions . 14 Annexes Annex A Heat Cycle Data Sheet . 28 Annex B Applicable Standards . 29 Annex C Suggested Thermocouple Locations 31 Annex D Optional Fault Current Test Class F Connectors . 32 Annex E Optional Corrosion Test Add

29、ition to Current Cycle Test (CCT) Class S Connectors 38 Tables Table 1 Test Duration 15 Table 2 Resistance and Temperature Measurement Intervals . 15 Table 3 Tensile Force, AWG Wire 16 Table 4 Tensile Force, mm2 Wire 16 Table 5 Tightening Torque, Inch Size Fasteners 17 Table 6 Tightening Torque, Met

30、ric Size Fasteners . 17 Table 7 Conductor Lengths for Current Cycle Tests, AWG/kcmil Sizes . 18 Table 8 Conductor Lengths for Current Cycle Tests, mm2 Sizes . 18 Table 9 Suggested Initial Test Current to Raise AWG/kcmil Control Conductor Temperature 100C (212F) Above Ambient . 19 Table 10 Suggested

31、Initial Test Current to Raise mm2 Control Conductor Temperature 100C (212F) Above Ambient 20 Table 11 Minimum Current-ON Duration for AWG/kcmil Control Conductors 20 Table 12 Minimum Current-ON Duration for mm2 Control Conductors 20 Table 13 Length of Exposed Conductor . 21 ANSI C119.4-2011 v Figure

32、s Figure 1 Length of Projected Conductor . 22 Figure 2 Horizontal Schematic 23 Figure 3 Tap Schematic 24 Figure 4 Wye Schematic . 25 Figure 5 Vertical Configuration 26 Figure 6 Copper System Stability Schematic 27 Worksheet Current Cycle Data Sheet . 28 ANSI C119.4-2011 vi Foreword (Neither this for

33、eword nor any of the informative annexes is a part of American National Standard C119.4-2011) This standard describes electrical and mechanical tests used to establish performance characteristics of connectors used to join aluminum-to-aluminum, aluminum-to-copper, or copper-to-copper bare and insula

34、ted conductors. It is the responsibility of the user to determine the proper connector for any particular application. The user may request the manufacturer to perform any additional desired testing beyond that required by the C119.4-2011 standard performance tests. Substantive changes to the standa

35、rd have been made in the C119.4-2011 version of the standard. A substantive change is one that directly and materially affects performance of a product and which requires testing or retesting to meet the current edition of a standard. The substantive changes to the standard are as follows: 1. Test r

36、equirements for copper connectors. 2. Test requirements for copper system stability, which were not part of earlier editions. 3. Requirement for retesting performance of a product if there have been substantive changes made to the product. This revision includes the addition of spreadsheet files in

37、Annex A that can be used to collect current cycle test data, calculate connector stability, generate graphs of the data, and print data to provide test results as part of the test report. The spreadsheets are provided to give a standardized format to collect, calculate, and report test data and test

38、 results. These spreadsheets were not part of earlier editions. This revision includes the addition of two optional tests: Optional Fault Current Test (Annex D) and Optional Corrosion Test (Annex E). These optional tests are not a part of the required C119.4-2011 standard performance tests. The subc

39、ommittee has provided these optional performance tests as references in response to users who have requested guidance for these types of additional performance tests. The user may request that the manufacturer perform any additional tests that are not a part of the required C119.4-2011 standard perf

40、ormance tests. This standard includes an additional current cycle test method (CCT) utilizing elevated temperature testing for an extra heavy duty connector category, Class AA. The intent of elevated test temperature in Class AA testing is to provide a better performing connector. There is also a ne

41、w class of tensile strengthClass 1A, Normal Tension. This standard includes an alternate, accelerated current cycle test method, henceforth referred to as the current cycle submersion test (CCST). The CCST method differs from the traditional current cycle test (CCT) in that test conductors are rapid

42、ly cooled by immersion in chilled water at the beginning of the current-OFF cycle, and the test requires fewer total current-ON and current-OFF cycles. Comparative testing has demonstrated that the CCST method will provide essentially the same performance test results as the traditional current cycl

43、e test (CCT) in fewer test cycles. The current cycle test remains the preferred test method recommended for qualification of a connector. This standard was initially developed under the direction of the Transmission and Distribution Committee of the Edison Electric Institute (EEI). Tentative perform

44、ance-type specifications for electrical characteristics were issued in joint report form in 1958 by a steering committee of EEI and an advisory committee of manufacturers on the aluminum conductor research project (EEI Pub. No. 59-70 Tentative Specifications for Connectors for Aluminum Conductors).

45、Experience gained from extensive trial use further confirmed the performance criteria and test conditions of the tentative specifications and led to the development of Standard TDJ 162 in October 1962 by a joint committee of EEI and the National Electrical Manufacturers Association (NEMA). TDJ 162 w

46、as subsequently superseded by this document. ANSI C119.4-2011 vii The C119.4 Subcommittee of the Accredited Standards Committee on Connectors for Electric Utility applications, C119, in its constant review of the publication, continues to seek out the views of responsible users that will contribute

47、to the development of better standards. Suggestions for improvement of this standard will be welcome. They should be sent to the National Electrical Manufacturers Association, 1300 North 17th Street, Suite 1752, Rosslyn, Virginia 22209. This standard was processed and approved for submittal to ANSI

48、by the Accredited Standards Committee on Connectors for Electrical Utility Applications, C119. Committee approval of this standard does not necessarily imply that all committee members voted for its approval. At the time it approved this standard, the C119 Committee had the following members: Dougla

49、s Harms, Chairperson Ronald Lai, Vice Chairperson Paul Orr, Secretary Organization Represented Aluminum Association Jean-Marie Asselin Electric Utility Industry Michael Dyer Warren Hadley Douglas Harms James Harris Harry Hayes Alan Kasanow J.C. Mathieson Jesus Rodriguez Curt Schultz Gerald Wasielewski David West Michael Zaffina National Electric Energy Testing Research The variable i signifies the individual temperature measurements taken at intervals given in Table 2, and di is a temperature difference for an individual temperature measurement. di = (Tcc - Tc)i i = 1, 2