ansi c29-3 2002

To: Holders ofANSI C29.3-1986 From: NEMA Communications Department Date: October 7,2002 Subject: Reaffirmation of ANSI C29.3- 1986 Setting Standards for Excellence

The ANSI Board of Standards Review has reaffirmed ANSI C29.3-1986, "Wet Process Porcelain Insulators (Spool Type)."

The new designator for this standard is: ANSI C29.3-1986 (R2002), "Wet Process Porcelain Insulators (Spool Type)."

Please insert the attached revised title page into your standard.

Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMA

Not for ResaleNo reproduction or networking permitted without license from IHS

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ANSI C29.3-I986 (R2002)

American Nat i on a I Stan da rd

Wet Process Porcelain Insulators (Spool Type)

Secretariat:

National Electrical Manufacturers Association

Approved as an

American National Standards Institute, Inc.



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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) 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 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 and establishes rules to promote fairness in the development of consensus, it does not write the document and it does 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 disclaims liability for any 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 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 warranty 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 seller?s products or services by virtue of this standard or guide.

In publishing and making this document available, 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 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 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 any health or safety-related information in this document shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement.



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A 4 7 - 09 ANSI C29.3-1986

for wet process porcelain insulators - spool type



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e

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A N S I C29-3 86 .3 0724150 0003977 9

ANSI@ C29.3-1986

Revision of ANSI C29.3-I980

American National Standard for Wet Process Porcelain Insulators -

Spool Type

Secretariat

National Electrical Manufacturers Association

Approved October 2,1986

American National Standards Institute, Inc -



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ANSI C27.3 B b I 0724350 0003778 O R

American Approval of an American National Standard requires verification by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by

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. Sub- stantial agreement means much more than a simple majority, but not necessarily unanim- ity, 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 respect preclude anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing. or using products, processes, or procedures not con- forming to the standards.

The American National Standards Institute does not develop standards and will 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 inter- pretations should be addressed 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 to reaffirm, revise, or withdraw this standard no later than five years from the date of approval. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute.

National the standards developer,

Standard

Published by

American National Standards Institute 1430 Broadway, New York, New York 10018

Copyright O 1986 by American National Standards Institute, Inc All rights reserved.

No part 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 AlM1186/7



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ANSI C27.3 86 m 072LiL50 0003773 2 M

(This Foreword is not part of American National Standard C29.3-1986.) Foreword The first edition of this standard was issued in 1961 and was based essentially on the EEI- NEMA (Edison Electric Institute-National Electrical Manufacturers Association) Stan- dards for Wet-Process Porcelain Insulators (Spool Type), EEI TDJ-53, NEMA 141-1952. Subsequent revisions were developed by the American National Standards Committee on Insulators for Electric Power Lines, C29.

The principal differences between the 1977 and 1961 editions were: a change of color requirements; addition of neck designations, dimensions, and tolerances; deletion of requirements for manufacturer’s production sampling and tests; and deletion of the statement regarding certified test data with regard to design tests. In the 1980 edition, all values were converted from U.S customary units to SI units. The 1986 edition moves Section 7, Packaging, to the Appendix.

Suggestions for improvement of this standard will be welcome. They should be sent to NationalElectricalManufacturers Association, 2101 L Street, NW, Washington, DC 20037.

This standard was processed and approved for submittal to ANSI by Accredited Standards Committee on Insulators for Electric Power Lines, C29. Committee approval of the standard does not necessarily imply that all committee members voted for its approval. At the time it approved thisstandard, the C29 Committee had the following members:

Olin Compton, Chair John A. Gauthier, Secretary

Organization Represented Name of Representative Bonneville Power Administration. . . . . . . . . . . . . . . . . . . . . . . . . . Robert L. Brown Electric Light and Power Group. . . . . . . . . . . . . . . . . . . . . . . . . . . G. A. Cook

A. S. Jagtiani J. F. Karcher E. F. Marchbank J. Weber D. E. Soffrin (Ait)

Institute of Electrical and Electronics Engineers . . . . . . . . . . . . . . . . . O. Compton T. A. Pinkham W. E. Richard N. E. Spaulding (Ait)

National Electrical Manufacturers Association . . . . . . . . . . . . . . . . . . A. C. Baker J. W. Carter R. Harap R. Harmon B. E. Kingsbury J. L. Nicho& J. D. Sakich A. E. Schwalm H. Van Herk (Ait)

U.S. Department of the Army. . . . . . . . . . . . . . . . . . . . . . . . . . . . H. Snyder Individiral Member G. A. Davidson



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. . I .

A N S I C 2 9 . 3 B b e 0724150 0003980

PAGE Contents SEmloN 1.Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 . Referenced American National Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4.General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5. Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

6 . Dimensions and Characteristics 5

7.Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

8 . Sampling, Inspection. and Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8.2 DesignTests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

8.2.1 Low-Frequency Dry Flashover Test . . . . . . . . . . . . . . . . . . . . . . . . . 6 8.2.2 Low-Frequency Wet Flashover Test . . . . . . . . . . . . . . . . . . . . . . . . . 6

8.3 Quality Conformance Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8.3.1 Dimensional Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8.3.2 Visual Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8.3.3 Porosity Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8.3.4 Transverse.StrengthTest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1 Neck Designations and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figures Figure 1 Spool Insulator. Class 53-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure3 SpoolInsulator.Class53-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 2 Spool Insulator. Class 53-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 4 Spool Insulator, Class 53.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 5 Spool Insulator, Class 53-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Appendix Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12



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ANSI c27 .3 ab m 0 7 2 ~ 1 1 5 0 0003qa1 o m

American National Standard for Wet Process Porcelain Insulators - Spool Type

1. Scope

This standard covers spool-type insulators made of wet- process porcelain and used in the transmission and distribution of electric energy.

2. Referenced American National Standards

This standard is intended to be used in conjunction with the following American National Standards. When the referenced standards are superseded by a revision approved by the American National Standards Institute, Inc, the revision shall apply,

ANSI C29.1-1982, Test Methods for Electrical Power Insulators

ANSI 255.1-1967 (R1973), Gray Finishes for Indus- trial Apparatus and Equipment

3. Definitions

5.2 The entire surface of the insulator, with the ex- ception of a firing surface, shall be glazed. The entire surface shall be relatively free from imperfections. Color is not a part of this standard. If gray is required, it shall be in accordance with ANSI 255.1-1967 (R1973), and conform to Munsellnotation 5BG 7.0/0.4 with the following tolerances:

(1) Hue: f 12 (3G to 7B) (2) Value: f 0.5 (3) Chroma: -0.2 to t0.6

6. Dimensions and Characteristics

6.1 Figures 1 through 5 (see pages 7-1 1) are drawings of insulator types. Dimensions and characteristics of the insulators shall be in accordance with these figures.

6.2 When specified, neck designations and dimensions shall be as shown in Table 1.

See Section 2 of ANSI C29.1-1982 for definitions of terms.

7. Marking

4. General

4.1 Insulators shall conform in ali respects to the requirements of this standard, The text and figures sup- plement each other and shall be considered part of this standard

4.2 Manufacturer’s drawings, if furnished, shall show the outline of the insulators, together with all pertinent dimensions, Any variations in these dimensions due to manufacturing tolerances shall be indicated.

5. Material

5.1 The insulators shall be made of good commercial- grade wet-process porcelain.

Each insulator shall bear a symbol identifying the manufacturer. The marking shall be both legible and durable.

Table 1 Neck Designations and Dimensions

Designation Letter

Diameter (millimeters)

Groove-Height Relationship as Applicable (millimeters)

Minimum Maximum

A 45 f 3 C 51 f 3 F 7 3 f 3 J 89 f 3 K 102 f 3 N 152f 3

- - 14 22 14 22 6 16 6 16 - -

5



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AMERICAN NATIONAL STANDARD C29.3-1986

8. Sampling, Inspection, and Tests

8.1 General. Tests described in 8.2 shall be required only on insulators of new designs. Tests described in 8.3 shall be required’on each lot of insulators.

8.2 Design Tests

insulators shall be selected at random and tested in accordance with 4.2 of ANSI C29.1-1982. Failure of the average dry flashover value of the three insulators to equal or exceed 95% of the rated dry flashover value, as given in the applicable figure, shall constitute failure to meet the requirements of this standard.

8.2.2 Low-Frequency Wet Flashover Test. Three insulators shall be selected at random and tested in accordance with 4.3 of ANSI C29.1-1982. Failure of the average wet flashover value of the three insulators to equal or exceed 9% of the rated wet flashover value, as given in the applicable figure, shall constitute failure to meet the requirements of this standard.

8.3 Quality Conformance Tests’ 8.3.1 Dimensional Test. Three insulators shall be

selected at random from the lot and their dimensions

8.2.1 Low-Frequency Dry Flashover Test. Three

Substantial test experience indicates that a total of 1/2% of the number of insulators in the lot is sufficient to establish characteristics demonstrable by destructive tests.

6

, -___-I- -

checked against the dimensions on the manufacturer’s drawing. Failure of more than one of these insulators to conform, within manufacturing tolerances, to the dimensions on this drawing shall constitute failure of the lot to meet the requirements of this standard.

8.3.2 Visual Test. If visual inspection is required on lots of 500 or more insulators, 50 insulators shall be selected at random from the lot. If more than 4 but fewer than 10 of the insulators fail to meet the requirements of 5.2, 100 additional insulators shall be selected at random from the same lot. Failure of more than a total of 10 insulators from both the first and second samples shall constitute failure of the lot to meet the requirements of this standard.

8.3.3 Porosity Test. Specimens shall be selected from insulators destroyed in other tests and tested in accordance with 5.4 of ANSI C29.1-1982. Penetra- tion of the dye jnto the body of the dielectric shall constitute failure of the lot to meet the requirements of this standard.

8.3.4 TransverseStrength Test, Five insulators shall be selected at random and tested in accordance with 5.1.6 of ANSI C29.1-1982. Failure of the average strength of the five insulators to meet the strength requirements given in the applicable figure, or failure of any one insulator to equal 85% of that strength re- quirement, shall constitute failure of the lot to meet the requirements of this standard.



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ANSI CZ9.3 86 W 0724350 0003783 4


Y

13

GROOVE MUST SEA NOT LESS THAN 21 DIA MANDREL

P r 4 5 2 5 7 - + 3 (NOTE 1 111

2 1.5

18 + 1.5-0 22 5.1.5

NOTES : (1) “A” neck. (2) AU dimensions are in millimeters

Mechanical Values Rating

Transverse strength, newtons 8900 Electrical Values

Low-frequency dry flashover, kilovolts 20

Vertical 8 Horizontal 10

Low-frequency wet flashover, kilovolts

See American National Standard C29.1-1982

Section

,5.1.6

4.2

4.3 4.3

Figure 1 Spool Insulator, Class 53-1

7

/- /-

. Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMA


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I A N S I C27.3 8 6 W 072qL50 000378q b I


-79' p - 4 5 2 3 (NOTE 1 . 5 1 1 ì - r

NOT LESS THAN 33 DIA MANDREL

1 /------ \ I A \

192 3 \ ir 38

GROOVE MUST SEAT 76 i 1.5

NOTES: (1) "A" neck. (2) Ali dimensions are in millimeters

Mechanical Values

Electrical Values Transverse strength, newtons

Low-frequency dry flashover, kilovolts Low-frequency wet flashover, kilovolts

Vertical Horizontal

L A - 24 2 1.5

Rating

13300

25

12 15

I

-*I8 t 1.5-0


Section

5.1.6

4.2

4.3 4.3


8



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ANSI C29-3 8b W 072q150 0003785 8 W


GROOVE MUST SEAT NOT LESS THAN 21 DIA MANDREL

18 + 1.5-0

24 2 1.5

NOTES : (1) “A” neck. (2) Ail dimensions are in millimeters

Rating Mechanical Values

Electrical Values Transverse strength, newtons 17800

Low-frequency dry flashover, kilovolts 25


Low-frequency wet flashover, kiiovolfs


See American National

Section Stmdatd C29.1-1982

1.5

5.1.6

4.2

4.3 4.3

9



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ANSI C27.3 8b m 0724350 000378b T m



NOTES: (1) “F” neck. (2) AU dimensions are in millimeters

Rating - Mechanical Values

Electrical Values Transverse strength, newtons 20000

Low-frequency dry flashover, kilovolts 25 Low-frequency wet flashover, kilovolts



10


Section

5.1.6

4.2

4.3 4.3



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- ANSI C27.3 8b m 0724250 0003787 2 m


I = 102i 3

1 1- 73 2 3 (NOTE I)


I ’ I I I I

I

I

h L----JI

I l I l

52.5 I

I

I

I I 1

I 1 I 181t 1.5-0 i 242 1.5

NOTES: (1) ‘IF” neck. (2) Ail dimensions are in millimeters

Rating

Transverse strength, newtons 26700 Mechanical Values

Electrical Values

-

Low-frequency dry flashover, kilovolts 35 Low-frequency wet flashover, kilovolts


See American National Standard C29.1-19 82

Section

5.1.6

4.2

4.3 4.3

I

‘ 3


11



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A N S I C27-3 8b m 0724150 0003788 3 W

(This Appendix is not part of American National Standard C29.3-1986, but is included for informa- Appendix tion only.)

Packaging

Packaging of insulators should be such as to afford reasonable and proper protection to the insulators in shipping and handling.

Each box or container should be marked with the number of pieces contained therein; the cata- log number, or class number, or description of the contents; and the manufacturer’s name.

12



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r

A N S I C29.3 86 E 0724350 0003987 5

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~ _ _ ANSI c 2 9 . 3 ab m 0724150 O O O ~ Y I O 1 m

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ansi c29-3 2002

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