ICEA S-94-649-2013 Concentric Neutral Cables Rated 5 Through 46 KV.pdf

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1、 STANDARD FORCONCENTRIC NEUTRAL CABLES RATED 5 THROUGH 46 KVApproved by AMERICAN NATIONAL STANDARDS INSTITUTE March 19,2013 Publication # ANSI/ICEA S-94-649-2013 2013 by INSULATED CABLE ENGINEERS ASSOCIATION, Inc.ANSI/ICEA S-94-649-2013 ICEA S-94-649-2013 STANDARD FOR CONCENTRIC NEUTRAL CABLES RATED

2、 5 THROUGH 46 KV StandardICEA S-94-649-2013 Published By INSULATED CABLE ENGINEERS ASSOCIATION, Inc. Post Office Box 1568 Carrollton, Georgia 30112, U.S.A.Approved by Insulated Cable Engineers Association, Inc.: June 2012 Accepted by IEEE/ICC2-A 14: September 2010 Accepted by AEIC: Cable Engineering

3、 Committee: March 2011 Approved by ANSI: March 19, 2013 Copyright 2013 by the Insulated Cable Engineers Association, Inc. All rights including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Literary and Artistic Works,

4、and the international 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 me

5、an that there is 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

6、 development process. 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

7、completeness of 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 indirect

8、ly resulting from 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 docum

9、ent will fulfill 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 prof

10、essional or other 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 professiona

11、l 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. ICEA has

12、no power, nor does 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 informat

13、ion in this document shall not be attributable to ICEA and is solely the responsibility of the certifier or maker of the statement. ICEA S-94-649-2013 DATE: 3/19/13 i FOREWORD This Standards Publication for Concentric Neutral Cables Rated 5 to 46 kV (ICEA S-94-649) was developed by the Insulated Cab

14、le Engineers Association Inc. (ICEA). ICEA standards are adopted in the public interest and are designed to eliminate misunderstandings between the manufacturer and the user and to assist the user in selecting and obtaining the proper product for his particular need. Existence of an ICEA standard do

15、es not in any respect preclude the manufacture or use of products not conforming to the standard. The user of this Standards Publication is cautioned to observe any health or safety regulations and rules relative to the manufacture and use of cable made in conformity with this Standard. Requests for

16、 interpretation of this Standard must be submitted in writing to the Insulated Cable Engineers Association, Inc., P. O. Box 1568, Carrollton, Georgia 30112. An official written interpretation will be provided. Suggestions for improvements gained in the use of this Standard will be welcomed by the As

17、sociation. The ICEA expresses thanks to the Association of Edison Illuminating Companies, Cable Engineering Committee for providing the basis for some of the material included herein through their participation in the Utility Power Cable Standards Technical Advisory Committee (UPCSTAC), and to the I

18、nstitute of Electrical and Electronics Engineers, Insulated Conductors Committee, Subcommittee A, Discussion Group A-14 for providing user input to this Standard. The members of the ICEA working group contributing to the writing of this Standard consisted of the following: F. Kuchta, Chairman E. Bar

19、tolucci R. Bristol J. Cancelosi B. Fleming K. Nuckles A. Pack B. Temple R. Thrash B. Vaughn E. Walcott R. Williamson ICEA S-94-649-2013 DATE: 3/19/13 ii TABLE OF CONTENTS Part 1 GENERAL 1 1.1 SCOPE 1 1.2 GENERAL INFORMATION . 1 1.3 INFORMATION TO BE SUPPLIED BY PURCHASER 1 1.3.1 Characteristics of S

20、ystems on which Cable is to be Used 1 1.3.2 Quantities and Description of Cable . 2 1.4 DEFINITIONS AND SYMBOLS . 2 Part 2 CONDUCTOR 6 2.0 GENERAL 6 2.1 PHYSICAL AND ELECTRICAL PROPERTIES . 6 2.1.1 Copper Conductors . 6 2.1.2 Aluminum Conductors 6 2.2 OPTIONAL WATER BLOCKING COMPONENTS FOR STRANDED

21、CONDUCTORS 7 2.3 CONDUCTOR SIZE UNITS . 7 2.4 CONDUCTOR DC RESISTANCE PER UNIT LENGTH 7 2.4.1 Direct Measurement of dc Resistance Per Unit Length . 7 2.4.2 Calculation of dc Resistance Per Unit Length 7 2.5 CONDUCTOR DIAMETER 8 Part 3 CONDUCTOR SHIELD (STRESS CONTROL LAYER) 14 3.1 MATERIAL . 14 3.2

22、EXTRUDED SHIELD THICKNESS . 14 3.2.1 Reduced Extruded Shield Thickness . 14 3.3 PROTRUSIONS AND CONVOLUTIONS . 14 3.4 VOIDS . 15 3.5 PHYSICAL REQUIREMENTS . 15 3.6 ELECTRICAL REQUIREMENTS 15 3.6.1 Extruded Semiconducting Material . 15 3.6.2 Extruded Nonconducting Material (For EPR Insulation Only) .

23、 15 3.6.3 Semiconducting Tape . 16 3.7 CROSSLINKED (THERMOSET) REQUIREMENTS 16 Part 4 INSULATION 17 4.1 MATERIAL . 17 4.2 INSULATION THICKNESS . 18 4.2.1 Selection of Proper Thickness 18 4.2.1.1 For Three-Phase Systems with 100 or 133 Percent Insulation Level . 18 4.2.1.2 For Delta Systems Where One

24、 Phase May Be Grounded For Periods Over One Hour 18 4.2.1.3 For Single- and Two-Phase Systems with 100 Percent Insulation Level 18 4.2.1.4 For Single- and Two-Phase Systems with 133 Percent Insulation Level 18 4.3 INSULATION REQUIREMENTS . 18 4.3.1 Physical and Aging Requirements . 18 4.3.2 Electric

25、al Requirements 19 4.3.2.1 Partial-Discharge Extinction Level for Discharge-Free Designs Only . 19 4.3.2.2 Discharge (Corona) Resistance for Discharge-Resistant Designs Only . 19 4.3.2.3 Voltage Tests . 20 4.3.2.4 Insulation Resistance Test 20 4.3.2.5 Dielectric Constant and Dissipation Factor. 20 I

26、CEA S-94-649-2013 DATE: 3/19/13 iii 4.3.3 Voids, Ambers, Gels, Agglomerates and Contaminants as Applicable 20 4.3.3.1 Crosslinked Polyethylene Insulation (XLPE or TRXLPE) 20 4.3.3.2 Ethylene Propylene Rubber (EPR) . 21 4.3.4 Shrinkback - Crosslinked Polyethylene Insulation (XLPE or TRXLPE) Only 21 P

27、art 5 EXTRUDED INSULATION SHIELD 25 5.1 MATERIAL . 25 5.2 THICKNESS AND INDENT REQUIREMENTS 25 5.3 PROTRUSIONS . 26 5.4 INSULATION SHIELD REQUIREMENTS 26 5.4.1 Insulation Shield for DISCHARGE-FREE Cable Designs Only . 26 5.4.1.1 Removability 26 5.4.1.2 Voids 26 5.4.1.3 Physical Requirements . 27 5.4

28、.1.4 Electrical Requirements 27 5.4.1.5 Crosslinked (Thermoset) Requirements . 27 5.4.2 Insulation Shield for DISCHARGE-RESISTANT Cable Designs Only 27 5.4.2.1 Removability 27 5.4.2.2 Physical Requirements . 27 5.4.2.3 Electrical Requirements 28 5.4.2.4 Crosslinked (Thermoset) Requirements . 28 Part

29、 6 CONCENTRIC NEUTRAL CONDUCTOR 29 6.1 MATERIAL . 29 6.2 CROSS-SECTIONAL AREA . 29 6.3 LAY LENGTH . 29 6.4 CONCENTRIC WIRES. 29 6.4.1 Minimum Sizes and Number 29 6.4.2 Contrahelical Wire . 29 6.4.3 Diameter and Area 29 6.5 FLAT STRAPS . 30 6.6 OPTIONAL WATER BLOCKING COMPONENTS FOR METALLIC SHIELD .

30、 30 Part 7 JACKETS . 32 7.1 MATERIAL . 32 7.1.1 Low Density and Linear Low Density Polyethylene, Black (LDPE/LLDPE) 32 7.1.2 Medium Density Polyethylene, Black (MDPE) . 33 7.1.3 High Density Polyethylene, Black (HDPE) . 34 7.1.4 Semiconducting Jacket Type I 35 7.1.5 Semiconducting Jacket Type II . 3

31、6 7.1.6 Polyvinyl Chloride (PVC) . 37 7.1.7 Chlorinated Polyethylene (CPE) . 38 7.1.8 Thermoplastic Elastomer (TPE) . 39 7.1.9 Polypropylene, Black (PP) 40 7.2 JACKET APPLICATION AND THICKNESS 41 7.2.1 Extruded-To-Fill Jacket . 41 7.2.2 Overlaying Jacket 41 7.3 JACKET IRREGULARITY INSPECTION . 41 7.

32、3.1 Non Conducting Jackets . 41 7.3.2 Semiconducting Jackets . 41 Part 8 CABLE ASSEMBLY AND IDENTIFICATION 43 8.1 MULTIPLEX CABLE ASSEMBLIES 43 ICEA S-94-649-2013 DATE: 3/19/13 iv 8.2 CABLE IDENTIFICATION . 43 8.2.1 Jacketed Cable . 43 8.2.1.1 Optional Cable Identification . 43 8.2.2 Unjacketed Cabl

33、e 43 8.2.3 Optional Center Strand Identification . 44 8.2.4 Optional Sequential Length Marking 44 Part 9 PRODUCTION TESTS . 45 9.1 TESTING 45 9.2 SAMPLING FREQUENCY. 45 9.3 CONDUCTOR TEST METHODS 45 9.3.1 Method for DC Resistance Determination . 45 9.3.2 Cross-Sectional Area Determination 45 9.3.3 D

34、iameter Determination 45 9.4 TEST SAMPLES AND SPECIMENS FOR PHYSICAL AND AGING TESTS 45 9.4.1 General 45 9.4.2 Measurement of Thickness 45 9.4.2.1 Micrometer Measurements . 46 9.4.2.2 Optical Measuring Device Measurements 46 9.4.3 Number of Test Specimens 46 9.4.4 Size of Specimens 46 9.4.5 Preparat

35、ion of Specimens of Insulation and Jacket . 47 9.4.6 Specimen for Aging Test 47 9.4.7 Calculation of Area of Test Specimens 47 9.4.8 Unaged Test Procedures 47 9.4.8.1 Specimens and Test Temperature . 47 9.4.8.2 Type of Testing Machine . 48 9.4.8.3 Tensile Strength Test 48 9.4.8.4 Elongation Test 48

36、9.4.9 Aging Tests . 48 9.4.9.1 Aging Test Specimens 48 9.4.9.2 Air Oven Test . 49 9.4.9.3 Oil Immersion Test for Polyvinyl Chloride Jacket . 49 9.4.10 Hot Creep Test 49 9.4.11 Solvent Extraction . 49 9.4.12 Wafer Boil Test for Conductor and Insulation Shields . 49 9.4.13 Amber, Agglomerate, Gel, Con

37、taminant, Protrusion, Indent, Convolutions and Void Test . 49 9.4.13.1 Sample Preparation . 49 9.4.13.2 Examination . 50 9.4.13.3 Resampling for Amber, Agglomerate, Gel, Contaminant, Protrusion, Convolutions and Void Test . 50 9.4.13.4 Protrusion, Indentation and Convolutions Measurement Procedure .

38、 50 9.4.14 Internal Irregularity Test Procedure for Crosslinked Polyethylene Insulation (XLPE or TRXLPE) Only . 51 9.4.14.1 Sample Preparation . 51 9.4.14.2 Detection of Irregularity . 51 9.4.14.3 Resampling for Internal Irregularity Test . 51 9.4.15 Physical Tests for Semiconducting Material Intend

39、ed for Extrusion 52 9.4.15.1 Test Sample . 52 9.4.15.2 Test Specimens . 52 9.4.15.3 Elongation 52 9.4.16 Retests for Physical and Aging Properties . 52 ICEA S-94-649-2013 DATE: 3/19/13 v 9.4.17 Retests for Thickness 52 9.5 DIMENSIONAL MEASUREMENTS OF THE METALLIC SHIELD . 52 9.6 DIAMETER MEASUREMENT

40、 OF INSULATION AND INSULATION SHIELD . 53 9.7 TESTS FOR JACKETS . 53 9.7.1 Heat Shock (PVC only) . 53 9.7.2 Heat Distortion . 54 9.7.3 Cold Bend (PVC and CPE only) . 54 9.8 VOLUME RESISTIVITY . 54 9.8.1 Conductor Shield (Stress Control) 54 9.8.2 Insulation Shield 55 9.8.3 Test Equipment . 55 9.8.4 T

41、est Procedure 55 9.8.4.1 Two-electrode Method 55 9.8.4.2 Four-electrode Method 55 9.8.4.3 Measurement . 55 9.8.5 Semiconducting Jacket Radial Resistivity Test 56 9.8.5.1 Sample Preparation . 56 9.8.5.2 Test Equipment Setup . 56 9.8.5.3 Calculation . 57 9.9 ADHESION TEST 58 9.10 SHRINKBACK TEST PROCE

42、DURE . 58 9.10.1 Sample Preparation 58 9.10.2 Test Procedure 58 9.10.3 Pass/Fail Criteria and Procedure 58 9.11 RETESTS ON SAMPLES . 58 9.12 AC VOLTAGE TEST 59 9.12.1 General 59 9.12.2 AC Voltage Test 59 9.13 PARTIAL-DISCHARGE TEST PROCEDURE 59 9.14 METHOD FOR DETERMINING DIELECTRIC CONSTANT AND DIE

43、LECTRIC STRENGTH OF EXTRUDED NONCONDUCTING POLYMERIC STRESS CONTROL LAYERS 59 9.15 WATER CONTENT . 59 9.15.1 Water Under the Jacket 60 9.15.2 Water in the Conductor . 60 9.15.3 Water Expulsion Procedure 60 9.15.4 Presence of Water Test 60 9.16 PRODUCTION TEST SAMPLING PLANS 61 Part 10 QUALIFICATION

44、TESTS . 64 10.0 GENERAL . 64 10.1 CORE QUALIFICATION TESTS . 64 10.1.1 Core Material Qualification Requirements . 64 10.1.1.1 Conductor Shield/Insulation Qualification . 65 10.1.1.2 Insulation/Insulation Shield Qualification 65 10.1.2 Manufacturing Qualification Requirements 65 10.1.2.1 Conductor Sh

45、ield/Insulation Test 65 10.1.2.2 Insulation/Insulation Shield Test . 65 10.1.3 High Voltage Time Test (HVTT) Procedure . 67 10.1.4 Hot Impulse Test Procedure . 68 10.1.5 Cyclic Aging . 68 10.1.5.1 Cable Length . 68 10.1.5.2 Sample Preparation . 68 ICEA S-94-649-2013 DATE: 3/19/13 vi 10.1.5.3 Conduit

46、 . 69 10.1.5.4 Load Cycle . 69 10.1.6 Accelerated Water Treeing Test (AWTT) Procedure . 69 10.1.6.1 General 69 10.1.6.2 Quantity of Cable To Be Aged 69 10.1.6.3 Aging Time . 69 10.1.6.4 Conduit Fixture 69 10.1.6.4.1 Structures Above Conduit Fixtures 70 10.1.6.4.2 Conduit Fixtures Dimensions . 70 10.

47、1.6.5 Water . 70 10.1.6.6 Ambient Temperature . 70 10.1.6.7 Test Procedure 70 10.1.6.8 Water pH 72 10.1.6.9 High Voltage Time Test Requirements . 72 10.1.6.10 Retesting 73 10.1.7 Qualification Test Electrical Measurements . 74 10.1.8 Qualification Test Physical Measurements 74 10.2 THERMOMECHANICAL

48、QUALIFICATION TEST - Optional . 74 10.2.1 Scope 74 10.2.2 Procedure 74 10.2.2.1 Fixture 74 10.2.2.2 Load Cycling 74 10.2.2.3 Electrical Measurements . 75 10.2.2.4 Physical Measurements Before and After the Thermomechanical Design Test 75 10.3 JACKET MATERIAL QUALIFICATION TESTS . 76 10.3.1 Polyethyl

49、ene And Polypropylene Jackets 77 10.3.1.1 Environmental Stress Cracking Test 77 10.3.1.1.1 Test Specimen 77 10.3.1.1.2 Test Procedure . 77 10.3.1.2 Absorption Coefficient Test . 77 10.3.2 Semiconducting Jackets . 77 10.3.2.1 Brittleness Test 77 10.3.3 Polyvinyl Chloride and Chlorinated Polyethylene Jackets . 77 10.3.3.1 Sunlight Resistance . 77 10.3.3.1.1 Test Samples 77 10.3.3.1.2 Test Procedure . 77 10.3.4 Extruded Red Stripe For Jackets 78 10.3.4.1 Sunlight Resistance . 78 10.3.4.1.1 Test Samples 78 10.3.4.1.2 Test Procedure . 78 10.4 CV EXTRUSION QUALIFICATION T