NEMA C29 13-2012 For Insulators Composite Distribution Deadend Type ( BEST AVAILABLE COPY ).pdf

1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI/NEMA C29.13-2012For Insulators Composite Distribution Deadend TypeANSI/NEMA C29.13-2012 American National Standard For Insulators CompositeDistribution Deadend Type Secretariat: National Electrical Manufacturers Association

2、Approved: October 2012 Published: July 2013 American National Standards Institute, Inc. 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. Consens

3、us does not necessarily mean that there is unanimous agreement among every person participating in the development of this document. American National Standards Institute (ANSI) standards and guideline publications, of which the document contained herein is one, are developed through a voluntary con

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15、 in no circumstances give an interpretation 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

16、to the secretariat or sponsor whose 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 Caution Notice: This American National Standard may be revised or withdrawn at any time.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

17、withdraw this standard. Purchasers of 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 2013 by N

18、ational Electrical Manufacturers Association 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 par

19、t of this publication may be reproduced 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. C29.13-2012 Page v Copyright 2013 by National Electrical Manufacturers Association FOREWORD (This Forew

20、ord is not part of American National Standard C29.13-2012) This first edition of this standard was based on a NEMA proposed standards publication for composite distribution insulators used on overhead transmission lines. It was developed at the request of American National Standards Committee on Ins

21、ulators for Electric Power Lines, ASC C-29. Suggestions for improvement of this standard will be welcome. They should be sent to the National Electrical Manufacturers Association, 1300 North 17thStreet, Rosslyn, VA 22209 This standard was processed and approved for submittal to ANSI by Accredited St

22、andards Committee on Insulators for Electric Power Lines, C29. Committee approval of the standard does not necessarily imply that all committee members voted for approval. At the time it approved this standard, the ASC C-29 Committee had the following members: Rob Christman, Chairman Steve Griffith,

23、 Secretary Organization Represented: Name of Representative: Edison Electric Institute B. Freimark R. Christman EleckleyM. Gars WAveyJ. Varnr (alt) R. Kluge (alt) G. Obenchain (alt) Institute of Electrical and Electronic Engineers T. Grisham J. Hildreth A. Jagtiani J. Kufel A. Phillips E. Gnandt (al

24、t) National Electrical Manufacturers Association P. Maloney A. Baker RA. nstorf GPowel . AStwart EKres (l)Z. Lodi (alt) E. Niedospial (alt) A. Schwalm (alt) Tennessee Valley Authority J. Nelson Western Area Power Administration R. Clark C29.13-2012 Page vi Copyright 2013 by National Electrical Manuf

25、acturers Association C29.13-2012 Page vii Copyright 2013 by National Electrical Manufacturers Association TABLE OF CONTENTS Page FOREWORD iv 1 SCOPE 1 2 DEFINITIONS . 1 3 GENERAL 1 4 MATERIALS 1 4.1 Core 1 4.2 Weathersheds 1 4.3 Metal Parts . 1 5 DIMENSIONS AND CHARACTERISTICS 1 6 MARKING 2 7 PROTOT

26、YPE TESTS 2 7.1 Water Penetration Test 3 7.2 Aging or Accelerated Weathering Test 4 7.3 Dye Penetration Test . 4 7.4 Water Diffusion Test 5 7.5 Power Arc Test 5 7.6 Tracking and Erosion Test 6 7.7 Tensile Load Test 7 7.8 Torsional Load Test . 7 7.9 Thermal Mechanical Test 8 7.10 Flammability Test fo

27、r the Shed and Housing Material. 8 8 ELECTRICAL DESIGN TESTS . 8 8.1 Low-Frequency Dry Flashover Test . 8 8.2 Low-Frequency Wet Flashover Test 9 8.3 Critical Impulse Flashover Tests-Positive and Negative . 9 8.4 Radio-Influence Voltage 9 9 QUALITY CONFORMANCE TESTS . 9 9.1 Dimensional Test 9 9.2 Gal

28、vanizing Test . 9 9.3 Specified Mechanical Load Test . 9 9.4 Retest Procedure 9 10 ROUTINE TESTS. 10 10.1 Tension-Proof Test . 10 10.2 Visual Examination . 10 11 REFERENCES TO THE TEXT 10 11.1 References to American National Standards . 10 11.2 References to Other than American National Standards .

29、10 C29.13-2012 Page viii Copyright 2013 by National Electrical Manufacturers Association TABLES 1 Prototype Testing Requirements 3 2 Design Requirements 13 FIGURES 1 Composite-Distribution Deadend Insulator 12 2 Tracking and Erosion Test; Method 1 . 14 3 Tracking and Erosion Test; Method 2 . 14 4 Th

30、ermal-Mechanical Load Test 15 5 Electrodes for Clause 7.4 . 15 C29.13-2012 Page 1 Copyright 2013 by National Electrical Manufacturers Association For Insulators CompositeDistribution Deadend Type 1 SCOPE This standard covers composite distribution deadend insulators made of a fiberglass-reinforced r

31、esin matrix core, polymer material weathersheds, and metal end fittings intended for use on overhead lines for electric power systems, 69 kV and below. Mechanical and electrical performance levels specified herein are requirements for new insulators. 2 DEFINITIONS See Section 3 of American National

32、Standard for Composite Suspension Insulators for Overhead Transmission LinesTests, ANSI C29.11, and Section 2 of American National Standard Test Methods for Electrical Power Insulators, ANSI C29.1, for definition of terms. 3 GENERAL Insulators shall conform in all respects to the requirements of thi

33、s standard. The text, figures, and tables supplement each other and shall be considered part of this standard. Manufacturers drawings, if furnished, shall show the outline of the insulators, together with all pertinent dimensions, and mechanical, electrical, and leakage values. Any variations in the

34、se dimensions due to manufacturing tolerances shall be indicated. 4 MATERIALS 4.1 Core The core of the insulator shall consist of a fiberglass-reinforced resin matrix. The core shall be sound and free of defects that might adversely affect the mechanical or electrical properties of the insulators. 4

35、.2 Weathersheds The weathersheds shall be made of polymer materials such as ethylene propylene or silicone elastomers. They may contain inorganic fillers and organic compounding agents. 4.3 Metal Parts Metal parts, except for cotter keys, shall be made of a good commercial grade of malleable iron, d

36、uctile iron, steel, aluminum, bronze, or brass. All ferrous parts, other than stainless steel, shall be galvanized in accordance with specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware ASTM A153. Cotter keys shall be made from cold-drawn bronze, brass, or austenitic stainless steel

37、wire. 5 DIMENSIONS AND CHARACTERISTICS Dimensions and characteristics of the insulators shall be in accordance with manufacturers drawings and Figure 1 and Table 2. The shapes of the weathersheds and spacing between them are not a part of this standard. For instances where specific tolerances on dim

38、ensions are not indicated, tolerances shall be as specified in Clause 5 of ANSI C29.11. AMERICAN NATIONAL STANDARD ANSI/NEMA C29.13-2012 C29.13-2012 Page 2 Copyright 2013 by National Electrical Manufacturers Association 6 MARKING Each insulator unit shall bear symbols identifying the manufacturer an

39、d the year of manufacture. In addition each insulator unit shall be marked with the specified mechanical load rating (SML) with appropriate units. The markings shall be legible and durable. 7 PROTOTYPE TESTS Prototype tests are required to verify the suitability of the materials and method of manufa

40、cture for insulators defined by the following characteristics: (1a) same shed material (1b) same housing material (2a) same shed design (includes diameter, thickness, and shape) (2b) same housing design (includes thickness and covering of metal fittings) (3) same core material (4) same core diameter

41、 (5) same manufacturing process (6) same metal fitting material (7a) same metal fitting connection zone design (7b) same metal fitting coupling design (7c) same core-metal-housing interface (8) same metal fitting method of attachment to core To allow for manufacturing variations, (2) and (4) may var

42、y up to 15% before the design tests must be repeated, except as noted below. Retesting is not required for greater thickness of the shed or housing or increased core dimensions. Retesting is also not required for a longer connection zone. Retesting is required for an increase in strength ratings. Th

43、e materials and methods of manufacture for insulators shall be qualified by successful completion of the following tests. Design changes shall be tested as listed in the table above. C29.13-2012 Page 3 Copyright 2013 by National Electrical Manufacturers Association Table 1 Prototype testing requirem

44、ents If the insulator design changes the . Then the following design prototype tests shall be repeated: 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 7.10 (1a) Shed Material X X X X (1b) Housing Material X X X X X X X (2a) Shed Design X (2b) Housing Design X X X X (3) Core Material X X X X X X (4) Core Diamet

45、er X X X X X (5) Manufacturing Process X X X X X X X X X (6) Metal End Fitting Material X X X X X (7a) Metal End Fitting Connection Zone Design X X X X (7b) Metal End Fitting Coupling Design X X (7c) Core-housing-metal End Fitting Interface Design X X X X (8) Metal End Fitting Method of Attachment t

46、o Core X X X X X 7.1 Water Penetration Test 7.1.1 Test specimens Select three insulators (sample insulators) for this test and an additional identical insulator (reference insulator) for the power frequency voltage test. 7.1.2 Test procedure Measure the hardness of two sheds of all three sample insu

47、lators in accordance with ASTM D2240 with a Shore A durometer. Boil each sample insulator in water having 0.1% by weight of NaCl for 100 hours. At the end of boiling, allow each insulator to remain in the water until the water cools to 50C5K. Maintain this temperature of the water until the followin

48、g tests start. All tests shall be completed within 48 hours. The sample insulators shall be rinsed with de-ionized water prior to the test evaluation. 7.1.3 Test evaluation Visual Examination Inspect the housing of each sample insulator. There shall be no cracks and no signs of dissolving or crumbli

49、ng. Hardness Test Measure the hardness of two sheds of each insulator in accordance with ASTM D 2240 with a Shore A durometer at the same temperature 5K that the pre-boiling measurements were taken. The hardness must not change from the pre-boiled specimen by more than 20%. C29.13-2012 Page 4 Copyright 2013 by National Electrical Manufacturers Association Steep-Front Impulse Voltage Test Subject each sample insulator to a steep-front impulse of at least 1000 kV/micro-second in accordance with 7.2.7 of IEEE Std 4. Eac