ANSI ICEA T-34-664-2014 TEST METHOD FOR CONDUCTING LONGITUDINAL WATER PENETRATION RESISTANCE TESTS ON LONGITUDINAL WATER BLOCKED CABLES.pdf

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1、 TEST METHOD FOR CONDUCTING LONGITUDINAL WATER PENETRATION RESISTANCE TESTS ON LONGITUDINAL WATER BLOCKED CABLES Approved by AMERICAN NATIONAL STANDARDS INSTITUTE January 28, 2014 Publication # ANSI/ICEA T-34-664-2014 2014 by INSULATED CABLE ENGINEERS ASSOCIATION, Inc. ANSI/ICEA T-34-664-2014 Approv

2、ed as an American National Standard ANSI Approval Date: February 4, 2014 Insulated Cable Engineers Assoc., Publication # T-34-664-2014 TEST METHOD FOR CONDUCTING LONGITUDINAL WATER PENETRATION RESISTANCE TESTS ON LONGITUDINAL WATER BLOCKED CABLES Published by Insulated Cable Engineers Association, I

3、nc. P.O. Box 1568 Carrollton, Georgia 30112 Copyright 2014 by the Insulated Cable Engineers Association. 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 Internat

4、ional and Pan American Copyright Conventions. 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

5、 unanimous agreement among every person participating in the development of this document. The Insulated Cable Engineers Association, Inc. (ICEA) standards and guideline publications, of which the document contained herein is one, are developed through a voluntary consensus standards development pro

6、cess. This process brings together persons who 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, it does not independently test, evaluate, or verify the accuracy or completeness of

7、any information or the soundness of any judgements 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 fro

8、m the publication, use of, application, or reliance 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

9、 any of your particular purposes or needs. ICEA 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 othe

10、r services for or on behalf of any person or 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 judgement or, as appropriate, seek the advice of a competent professional in determining

11、 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. ICEA has no power, nor do

12、es it undertake to police or enforce compliance 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 docu

13、ment shall not be attributable to ICEA and is solely the responsibility of the certifier or maker of the statement.ANSI/ICEA T-34-664-2014 Page i Copyright 2014 by the Insulated Cable Engineers Association, Incorporated. CONTENTS Page Foreword ii Section 1 GENERAL 1 1.1 SCOPE 1 1.2 GENERAL INFORMATI

14、ON . 1 1.3 DEFINITIONS 1 Section 2 TEST EQUIPMENT 2 2.1 TEST ASSEMBLY . 2 2.1.1 Qualification Test Part A and Production Test . 2 2.1.2 Qualification Test Part B 2 2.2 BENDING CONDITIONING . 2 2.2.1 Multiple Conductor Cable Without Metallic Shield . 2 2.2.2 Shielded Power Cable . 2 Section 3 QUALIFI

15、CATION TEST PROCEDURES. 4 3.1 SAMPLE 4 3.1.1 Conductor Configuration 4 3.1.2 Insulation Type “Test Method for Conducting Longitudinal Water Penetration Resistance Tests on Blocked Conductors”. ICEA publications are adopted in the public interest and are designed to eliminate misunderstanding between

16、 the manufacturer and the user and to assist the user in selecting and obtaining proper product for his particular need. Existence of an ICEA publication does not in any respect preclude the manufacture or use of products not conforming to the publication. The user of this publication is cautioned t

17、o observe any health or safety regulations and rules relative to the manufacture and use of cable made in conformity with this publication. Requests for interpretation of this publication must be submitted in writing to the Insulated Cable Engineers Association, Inc. P.O. Box 1568, Carrollton, Georg

18、ia 30112. An official written interpretation will be provided. Suggestions for improvements gained in the use of this publication will be welcomed by the Association. The members of the ICEA working group contributing to the revision of this publication consisted of the following: W. Temple Chairman

19、 E. Bartolucci R. Bristol J. Cancelosi W. Crawford D. Elder R. Fleming F. Kuchta P-M. Leblanc D.Masakowski K. Nuckles R. Szlagyi R. Thrash E. Walcott R. Williamson ANSI/ICEA T-34-664-2014 Page 1 Copyright 2014 by the Insulated Cable Engineers Association, Incorporated. Section 1 GENERAL 1.1 SCOPE Th

20、is test method provides for qualification and production test procedures for determining the effectiveness of non-metallic water barriers incorporated in a cable construction which are designed as an impediment to longitudinal water penetration along the cable interstices. 1.2 GENERAL INFORMATION U.

21、S. customary units, except for temperature, are specified throughout this standard. Approximate International System of Units (SI) equivalents are included for information only. 1.3 DEFINITIONS Cable Core: For nonshielded designs, the cable core is the portion of the cable which includes the conduct

22、or and the insulation, it may also include a conductor shield. For shielded cable designs, the cable core is the portion of the cable that includes the conductor, the conductor shield, the insulation and the extruded insulation shield. Extrudable Conductor Filler Compound: An extrudable compound mat

23、erial incorporated in a cable construction intended as an impediment to water penetration. Nominal Insulation Thickness: The insulation thickness that is used for identification purposes only. The nominal insulation thickness can be found in the applicable ICEA cable standard. Pumpable Conductor Fil

24、ler Compound: A pumpable compound material incorporated in a cable construction intended as an impediment to water penetration. Water Swellable Component: A water swellable tape, yarn, or powder, or a combination thereof incorporated in a cable construction intended as an impediment to water penetra

25、tion. ANSI/ICEA T-34-664-2014 Page 2 Copyright 2014 by the Insulated Cable Engineers Association, Incorporated. Section 2 TEST EQUIPMENT 2.1 TEST ASSEMBLY 2.1.1 Qualification Test Part A and Production Test A typical test equipment assembly is shown in Appendix A. A suitable means shall be provided

26、to apply regulated water pressure to the test assembly. The pressure shall be measured with a gauge having an accuracy error of not more than 5% and a preferred range of not greater than 0 to 15 psig (0 to 103.4 kPag). 2.1.2 Qualification Test Part B A typical test equipment assembly is shown in App

27、endix B. A suitable means shall be provided to apply regulated water pressure to the test assembly. The pressure shall be measured with a gauge having an accuracy error of not more than 5% and a preferred range of not greater than 0 to 15 psig (0 to 103.4 kPag). 2.2 BENDING CONDITIONING Bending mand

28、rels shall be available as necessary to perform the bending conditioning of both the qualification and production test specimens. The cable manufacturer may choose to utilize smaller size mandrels. The bending conditioning procedure is not required for Qualification Test Part A for designs that empl

29、oy water swellable components (tape, yarn, or powder). The bending conditioning procedure is required for Qualification Test Part A on designs that utilize a pumpable or extrudable conductor filler compound with or without water swellable components. The bending conditioning procedure is required fo

30、r Qualification Test Part B for all designs. 2.2.1 Multiple Conductor Cable Without Metallic Shield For cables without metallic shield the diameter of the bending mandrel shall be 10 times the overall cable diameter. 2.2.2 Shielded Power Cable For cables rated 5 through 46 kV the bending mandrels sh

31、all be sized per Table 2-1. For cables rated above 46 kV through 345 kV bending mandrels shall be sized per Table 2-2. ANSI/ICEA T-34-664-2014 Page 3 Copyright 2014 by the Insulated Cable Engineers Association, Incorporated. Table 2-1 BENDING MANDRELS FOR CABLES RATED 5 THROUGH 46 KV Type of Metalli

32、c Shield or Sheath Diameter of Mandrel as a Multiple of Measured Overall Cable Diameter Helically Applied Tape 14 Longitudinally Applied Corrugated Tape 14 Round Wires 12 Flat Straps 12 Corrugated Sheath 14 Lead Sheath 14 Table 2-2 BENDING MANDRELS FOR CABLES RATED ABOVE 46 KV THROUGH 345 KV Type of

33、 Metallic Shield or Sheath Diameter of Mandrel as a Multiple of Measured Conductor plus Measured Overall Cable Diameter * Non-Bonded Smooth Aluminum Sheath 36(d+D) Bonded Smooth Aluminum Sheath 25(d+D) Lead Sheath 25(d+D) Corrugated Sheath 25(d+D) Longitudinally Applied Bonded Foil Laminates 25(d+D)

34、 All Other Designs 20(d+D) * Where “d” is the conductor diameter and “D” is the overall cable diameter. ANSI/ICEA T-34-664-2014 Page 4 Copyright 2014 by the Insulated Cable Engineers Association, Incorporated. Section 3 QUALIFICATION TEST PROCEDURES 3.1 SAMPLE Longitudinal water blocked cable design

35、s must meet the requirements of the Qualification Test procedures, both Part A and Part B. These tests need not be repeated once they have been performed successfully, unless alterations are made to cable design or materials which might affect the performance. A qualification sample for the water pe

36、netration resistance qualification test shall be selected from completed jacketed cable. Each sample shall be adequate in length to complete all conditioning and testing per Sections 3.2.1 and. 3.2.4. Single conductor nonshielded and nonjacketed cables rated 5 kV or less are qualified by ICEA Public

37、ation T-31-610 “Test Method for Conducting Longitudinal Water Penetration Resistance Tests on Blocked Conductors”. 3.1.1 Conductor Configuration 3.1.1.1 Two Layer Concentric Lay Stranded Qualifying any two (2) layer stranded conductor sample shall be representative of all two (2) layer and single la

38、yer stranded conductors. A separate qualification shall be conducted if a tape is used between the conductor and the extruded cable core. Figure 3-1 TWO LAYER CONCENTRIC LAY STRANDED CONDUCTOR 3.1.1.2 Three or More Layer Concentric Lay Stranded Qualifying any stranded conductor containing three (3)

39、or more layers of wires shall be representative of all stranded conductors including two (2) layer and single layer stranded conductors. A separate qualification shall be conducted if a tape is used between the conductor and the extruded cable core. Figure 3-2 THREE LAYER CONCENTRIC LAY STRANDED CON

40、DUCTOR 3.1.1.3 Segmental Conductors Qualifying any segmental conductor shall be representative of all segmental conductors. A separate qualification shall be conducted if a tape is used between the conductor and the extruded cable core. ANSI/ICEA T-34-664-2014 Page 5 Copyright 2014 by the Insulated

41、Cable Engineers Association, Incorporated. Figure 3-3 SEGMENTAL CONDUCTOR 3.1.2 Insulation Type however, compression fasteners such as hose clamps shall not be used if the cable cannot be freely rotated under the secured assembly. The test specimen shall be mounted in a vertical or horizontal positi

42、on and pressure testing shall be conducted at room temperature. Other than the horizontal position, the test assembly shall be placed at the upper end of the specimen. The water shall be dyed to ensure any leakage from the cable will be visible. A water pressure specified in the applicable ICEA cabl

43、e standard shall be introduced within one (1) minute and held for one (1) hour. The cable design is rejected if any water leakage is detected from the open cable end during the test of either conditioned test specimen. 3.2.4 Qualification Test Part B A specimen of completed cable derived from the ca

44、ble sample selected from Section 3.1 shall be subjected to bending at the uniform rate of not less than 10 degrees per second or not more than 20 degrees per second for three (3) cycles. Each cycle shall be two (2) 180-degree bends in opposite direction around a mandrel with a diameter as specified

45、in Section 2.2. The initial bend shall be in the direction of the cables as received curvature, if any. The bending test shall be performed in an ambient environment (room temperature). A 10-foot 1.0-inch (3.05-meter 25.4-mm) section of cable, plus additional conductor length to facilitate current c

46、onnections, shall be cut from the center of the straightened cable specimen. A ring 2 inches (50.8 mm) wide shall be removed from the center of the length. The ring shall comprise all the layers external to the conductor insulation, bonded jacket of a composite insulation, or insulation shield in th

47、e case of shielded cable. The surfaces shall be cut so that the relevant interstices can be readily exposed to the water. The outer coverings and metallic shield on the remainder of the 10-foot (3.05-m) section, shall not be removed in order to test the water penetration resistance between the inter

48、face of the insulation or insulation shield, metallic shield (if applicable) and overall jacket. A test arrangement similar to that in Appendix B shall be assembled to include the test specimen. A Plexiglas pipe or similar device, one to two feet (305 to 610 mm) in length, is to be placed over the e

49、xposed ring and suitably sealed to the surface of the overall jacket to maintain test pressure. ANSI/ICEA T-34-664-2014 Page 7 Copyright 2014 by the Insulated Cable Engineers Association, Incorporated. Compression fasteners, such as hose clamps, shall not be used if the cable cannot be freely rotated under the secured assembly. To monitor the test specimen temperature, thermocouples shall be placed on the conductor of a separate section of the test specimen installed inside the PVC pipe (without water). Suitable current shall be induced to achi