ANSI ICEA T-22-294-2016 TEST PROCEDURES FOR EXTENDED TIME-TESTING OF WIRE AND CABLE INSULATIONS FOR SERVICE IN WET LOCATIONS.pdf

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1、 TEST PROCEDURES FOR EXTENDED TIME-TESTING OF WIRE AND CABLE INSULATIONS FOR SERVICE IN WET LOCATIONS ANSI/ICEA T-22-294-2016 2016 by INSULATED CABLE ENGINEERS ASSOCIATION, Inc. ANSI/ICEA T-22-294-2016 ANSI/ICEA T-22-294-2016 ICEA TEST PROCEDURES FOR EXTENDED TIME-TESTING OF WIRE and CABLE INSULATIO

2、NS FOR SERVICE IN WET LOCATIONS Publication T-22-294-2016 Published By Insulated Cable Engineers Association, Inc. Approved, November 26, 2013 by INSULATED CABLE ENGINEERS ASSOCIATION, Inc. Approved, February 16, 2016, by AMERICAN NATIONAL STANDARDS INSTITUTE Copyright 2016 by the Insulated Cable E

3、ngineers Association, Incorporated. 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. ANSI/ICEA T-22-294-2016

4、Page ii 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 perso

5、n participating in the development of this document. 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 w

6、ho have an interest in the topic covered by this publication. While 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 judg

7、ments contained in its standards and guideline publications. 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 re

8、liance on this document. 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. IC

9、EA 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, ICEA is not undertaking to render professional or other services for or on behalf of any person or

10、entity, nor is 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

11、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. ICEA has no power, nor do they undertake to police or enforce complianc

12、e with the contents of this document. ICEA 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 ICEA and is

13、solely the responsibility of the certifier or maker of the statement. ICEA T-22-294-2016 iii Foreword This Test Procedure for Extended Time-Testing of Wire and Cable Insulations for Service in Wet Locations was developed by the Insulated Cable Engineers Association, Incorporated (ICEA). ICEA Procedu

14、res are adopted in the public interest and are designed to eliminate misunderstandings between the manufacturers and the user and to assist the user in selecting and obtaining the proper product for his or her particular need. The user of this Publication is cautioned to observe any health or safety

15、 regulations and rules relative to the use of cable made in conformity with this Procedure. Requests for interpretation of this Procedure must be submitted in writing to: Insulated Cable Engineers Association, Inc. An official interpretation will be made by the Association. Suggestions for improvem

16、ents in this publication are welcome, and should be sent to ICEA at the previous address. The members of the ICEA working group contributing to the writing of this Standard consisted of the following: R. E. Fleming, Chairman J. Armstrong E. Bartolucci M. Bodziony R. Bristol J. Cancelosi F. Clark W C

17、rawford A. Davila D. Farrick M. Fuller F. Kuchta M. Levitre C. Lindler P-M. Leblanc K. Nuckles H. Soleski C. Spradlin R. Szilagyi B. Vaughn E. Walcott R. Williamson D. Zhao ANSI/ICEA T-22-294-2016 Page iv TABLE OF CONTENTS Page 1.0 SCOPE . 1 2.0 TEST SPECIMENS 1 3.0 TEST SET-UP 1 3.1 IMMERSION OF TE

18、ST SPECIMENS 1 3.2 WATER TEMPERATURE 1 4.0 PROCEDURE . 1 4.1 VOLTAGE WITHSTAND 1 4.2 CONTINUOUS TEST VOLTAGE . 2 4.2.1 Insulation for dc service . 2 4.2.2 Insulation for ac service . 2 4.3 TEST DURATION . 2 5.0 MEASUREMENTS . 2 6.0 REPORT . 2 7.0 REFERENCE 2 ICEA T-22-94-2016 1 TEST PROCEDURES FOR E

19、XTENDED TIME-TESTING OF WIRE and CABLE INSULATIONS FOR SERVICE IN WET LOCATIONS 1.0 SCOPE This publication describes procedures for long term testing of extruded wire and cable insulations for service in wet (submerged) locations. It is intended to apply to insulations rated for service up to 2000 v

20、olts inclusive. Tests may be conducted on single or multiple wall insulations, using either ac or dc voltage, as applicable. 2.0 TEST SPECIMENS Each test specimen shall be an insulated 12 or 14 AWG solid or stranded conductor of a length sufficient to immerse 10 feet (3.05m) plus have sufficient end

21、s for electrical connections. No separator shall be used between the conductor and insulation and no covering shall be applied over the insulation. The insulation may be applied in multiple layers of different materials (composite insulation). The wall thickness shall have a minimum point no less th

22、an 0.027 inches (0.69mm) and maximum point no greater than 0.035 inches (0.89mm). 3.0 TEST SET-UP 3.1 IMMERSION OF TEST SPECIMENS 10 feet 0.5 inches (3.05m 12.7mm) of each specimen shall be immersed in a bath of tap water with an initial pH of 6.0 to 8.0 inclusive. The bath shall be maintained at a

23、designated temperature 2C. The water level shall be maintained continuously over the immersed length of the specimen. Either tap or distilled water may be used to make up evaporation losses. Note: Suggested ways to limit evaporation are to either use a tight fitting cover over the bath, with specime

24、n test ends brought out through water tight bushings or use a layer of plastic balls. The water shall be maintained at ground potential by means of a metal electrode inserted in the bath. For dc testing, the positive electrode shall be grounded. 3.2 WATER TEMPERATURE Water temperature shall be maint

25、ained at one of the following temperatures 2C: 90C 75C 4.0 PROCEDURE 4.1 VOLTAGE WITHSTAND A 3000 volt 49 to 61 Hertz test potential shall be applied for 5 minutes between the conductor of the test specimen and the grounded water bath in accordance with the following schedule: Initial test: Immediat

26、ely after immersion 2ndtest: 1 day after immersion 3rdtest 7 days after immersion 4thtest: 14 days after immersion All succeeding test: at 7, 14, or 28 day intervals after the 4thtest. ANSI/ICEA T-22-294-2016 Page 2 4.2 CONTINUOUS TEST VOLTAGE A continuous test voltage as given in 4.2.1 or 4.2.2 sha

27、ll be applied to the conductor of each test specimen immediately after the initial withstand test and maintained throughout except during measurement and withstand test periods. 4.2.1 Insulation for dc service The continuous test voltage shall be 600 volts dc negative. 4.2.2 Insulation for ac servic

28、e The continuous test voltage shall be 600 volts 49 to 61 Hertz. 4.3 TEST DURATION The minimum test duration shall be 16 weeks for dc service or 26 weeks for ac service. No maximum time is specified. 5.0 MEASUREMENTS One or more of the following electrical properties shall be measured in accordance

29、with ICEA T-27-581 at the same time intervals as in Section 4.1. Measurements shall be made either immediately before or immediately after the withstand test. 1. Insulation Resistance (500V dc) 2. Dissipation Factor (or Power Factor) 3. Permittivity (or Specific Inductive Capacity) 4. Stability Fact

30、or NOTE: All properties of a given material may not change at the same rate. The properties of different materials may not change in the same manner. A useful technique is to measure a number of properties early in the test and then continue measuring those that show the most significant change. 6.0

31、 REPORT The test report shall include the following: 1. Description of the test specimen, including conductor size and stranding; and insulation type and thickness. 2. Number of specimens tested. 3. Water bath temperature and temperature variation. 4. Test voltage; withstand and continuous, and whet

32、her ac or dc. 5. Value of measured electrical properties and measurement intervals. This information may be reported in chart or graph form if data points are indicated and scales are chosen which effectively portray the magnitude of changes in values. If a number of specimens are tested simultaneou

33、sly, average values may be reported. 6. Time to failure of any specimen, location of failure in the test length, and whether failure occurred at withstand or continuous voltage. 7.0 REFERENCE ANSI/ICEA T-27-581 Standard Test Methods for Extruded Dielectric Power, Control, Instrumentation, and Portable Cables for Test