1、2018 by INSULATED CABLE ENGINEERS ASSOCIATION, Inc.ANSI/ICEA S-108-720-2018 Standard for Extruded Insulation Power Cables Rated Above 46 through 500 KV AC ICEA S-108-720-2018 STANDARD FOR EXTRUDED INSULATION POWER CABLES RATED ABOVE 46 THROUGH 500 KV AC Standard ICEA S-108-720-2018 Published By INSU
2、LATED CABLE ENGINEERS ASSOCIATION, Inc. Approved by Insulated Cable Engineers Association, Inc.: 9/12/17 Accepted by AEIC: Cable Engineering Committee: 7/11/17 Approved by ANSI: 3/16/18 Copyright 2018 by the Insulated Cable Engineers Association, Inc. All rights including translation into other lan
3、guages, 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. ICEA S-108-720-2018 DATE: 3/16/18 i FOREWORD This Standards Publication for Extruded Insulation Power Cable
4、s Rated above 46 to 500 kV AC (ICEA S-108-720) was developed by the Insulated Cable Engineers Association Inc. (ICEA). ICEA standards are adopted in the public interest and are designed to eliminate misunderstandings between the manufacturer and the purchaser and to assist the purchaser in selecting
5、 and obtaining the proper product for his particular need. Existence of an ICEA standard does 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 relat
6、ive to the manufacture and use of cable made in conformity with this Standard. Requests for interpretation of this Standard must be submitted in writing to the Insulated Cable Engineers Association, Inc., . An official written interpretation will be provided. Suggestions for improvements gained in t
7、he use of this Standard will be welcomed by the Association. 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 Te
8、chnical Advisory Committee (UPCSTAC), and to the Institute 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 cons
9、isted of the following: F. Kuchta, Chairman J. Armstrong E. Bartolucci R. Bristol B. Crawford A. Davila B. Fleming T. Jones S. Kamel D. Land P. Leblanc C. Lindler J. Maximo B. Miller J. Mumm R. Murphy K. Nuckles K. Porter C. Sprandlin R. Szilagyi B. Temple J. Weitzel T. West S. Wetzel R. Williamson
10、ICEA S-108-720-2018 DATE: 3/16/18 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 Systems on which Cable is to be Used 1 1.3.2 Description of Installation 2 1.3.3 Quantities and Description of Cabl
11、e . 2 1.4 INFORMATION TO BE SUPPLIED BY MANUFACTURER . 2 1.5 DEFINITIONS AND SYMBOLS 3 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 2.1.3 Special Conductors . 6 2.1.3.1 Segmental Conductors 7 2.2 OPTIONAL WATER BL
12、OCKING COMPONENTS FOR STRANDED CONDUCTORS . 7 2.3 CONDUCTOR SIZE UNITS . 7 2.4 CONDUCTOR DC RESISTANCE . 7 2.4.1 Direct Measurement of dc Resistance Per Unit Length 8 2.4.2 Calculation of dc Resistance Per Unit Length . 8 2.5 CONDUCTOR DIAMETER 8 Part 3 CONDUCTOR SHIELD 14 3.1 MATERIAL . 14 3.2 EXTR
13、UDED CONDUCTOR SHIELD THICKNESS 14 3.3 PROTRUSIONS AND IRREGULARITIES 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) . 15 3.6.3 Semiconducting Tape . 16 3.7 CRO
14、SSLINKED (THERMOSET) REQUIREMENTS . 16 Part 4 INSULATION 17 4.1 MATERIAL . 17 4.2 INSULATION THICKNESS . 17 4.2.1 Selection of Proper Thickness 18 4.2.2 Insulation Eccentricity . 19 4.3 INSULATION REQUIREMENTS . 19 4.3.1 Physical and Aging Requirements . 19 4.3.2 Electrical Test Requirements 20 4.3.
15、2.1 Partial-Discharge for Discharge-Free Designs only . 20 4.3.2.2 Voltage Tests . 21 4.3.2.3 Insulation Resistance Test 22 4.3.2.4 Dielectric Constant and Dissipation Factor 22 4.3.2.5 Discharge (Corona) Resistance for Discharge-Resistant EPR Designs Only 22 4.3.3 Voids, Ambers, Gels, Agglomerates
16、and Contaminants as Applicable 22 ICEA S-108-720-2018 DATE: 3/16/18 iii 4.3.3.1 Crosslinked Polyethylene Insulation (XLPE) 22 4.3.3.2 Ethylene Propylene Rubber (EPR) . 23 4.3.4 Shrinkback - Crosslinked Polyethylene Insulation (XLPE) Only . 23 Part 5 EXTRUDED INSULATION SHIELD 24 5.1 MATERIAL . 24 5.
17、2 EXTRUDED INSULATION SHIELD THICKNESS . 24 5.3 PROTRUSIONS AND IRREGULARITIES 24 5.4 VOIDS . 24 5.5 PHYSICAL REQUIREMENTS . 24 5.6 ELECTRICAL REQUIREMENTS 25 5.5.1 Extruded Semiconducting Material. 25 5.5.2 Semiconducting Tape . 25 5.7 CROSSLINKED (THERMOSET) REQUIREMENTS . 25 Part 6 METALLIC SHIEL
18、DING 26 6.1 GENERAL 26 6.2 SHIELDS 26 6.2.1 Helically Applied Tape Shield . 26 6.2.2 Longitudinally Applied And Overlapped Corrugated Tape Shield . 26 6.2.3 Wire Shield 26 6.2.4 Flat Strap Shield 27 6.3 SHEATHS . 27 6.3.1 Lead Sheath 27 6.3.2 Smooth Aluminum Sheath 27 6.3.3 Continuously Corrugated S
19、heath . 27 6.4 RADIAL MOISTURE BARRIER 28 6.4.1 Bonded Metallic Foil Laminates 28 6.5 OPTIONAL LONGITUDINAL WATER BLOCKING COMPONENTS . 28 Part 7 JACKET 29 7.1 MATERIAL . 29 7.1.1 Polyethylene, Black . 29 7.1.2 Polyvinyl Chloride 30 7.1.3 Low Smoke Halogen Free 31 7.2 JACKET APPLICATION AND THICKNES
20、S 32 7.2.1 Thickness of Jacket for Tape, Wire Shield and Metallic Foil Laminate . 32 7.2.2 Thickness of Jacket for Sheaths 32 7.3 OPTIONAL SEMICONDUCTING COATING 32 7.4 JACKET IRREGULARITY INSPECTION . 32 7.4.1 Jackets without Optional Semiconducting Coating 32 7.4.2 Jackets with Optional Semiconduc
21、ting Coating . 32 Part 8 CABLE IDENTIFICATION . 35 8.1 CABLE IDENTIFICATION . 35 8.1.1 Optional Center Strand Identification . 35 8.1.2 Optional Sequential Length Marking 35 Part 9 PRODUCTION TESTS 36 9.1 TESTING 36 9.2 SAMPLING FREQUENCY 36 9.3 CONDUCTOR TEST METHODS 36 9.3.1 Method for DC Resistan
22、ce Determination . 36 9.3.1.1 Retests for DC Resistance 36 9.3.2 Cross-Sectional Area Determination 36 ICEA S-108-720-2018 DATE: 3/16/18 iv 9.3.3 Diameter Determination 36 9.4 TEST SAMPLES AND SPECIMENS FOR PHYSICAL AND AGING TESTS 36 9.4.1 General 37 9.4.2 Measurement of Thickness 37 9.4.2.1 Microm
23、eter Measurements . 37 9.4.2.2 Optical Measuring Device Measurements . 37 9.4.3 Number of Test Specimens 37 9.4.4 Size of Specimens 38 9.4.5 Preparation of Specimens of Insulation and Jacket 38 9.4.6 Specimen for Aging Test 38 9.4.7 Calculation of Area of Test Specimens 38 9.4.8 Unaged Test Procedur
24、es 39 9.4.8.1 Test Temperature 39 9.4.8.2 Type of Testing Machine . 39 9.4.8.3 Tensile Strength Test 39 9.4.8.4 Elongation Test 39 9.4.9 Aging Tests . 39 9.4.9.1 Aging Test Specimens 39 9.4.9.2 Air Oven Test . 40 9.4.9.3 Oil Immersion Test for Polyvinyl Chloride Jacket . 40 9.4.10 Hot Creep Test 40
25、9.4.11 Solvent Extraction . 40 9.4.12 Wafer Boil Test for Conductor and Insulation Shields . 40 9.4.13 Amber, Agglomerate, Gel, Contaminant, Protrusion, Irregularity and Void Test 40 9.4.13.1 Method A . 41 9.4.13.1.1 Sample Preparation 41 9.4.13.1.2 Examination 41 9.4.13.1.3 Resampling for Amber, Ag
26、glomerate, Gel, Contaminant, Protrusion, Irregularity and Void Test . 41 9.4.13.1.4 Protrusion and Irregularity Measurement Procedure 41 9.4.13.2 Method B . 42 9.4.13.2.1 Sample Preparation 42 9.4.13.2.2 Detection of Irregularity 42 9.4.13.2.3 Resampling for Internal Irregularity Test 42 9.4.14Physi
27、cal Tests for Semiconducting Material Intended for Extrusion 43 9.4.14.1 Test Sample 43 9.4.14.2 Test Specimens . 43 9.4.14.3 Elongation 43 9.4.15Retests for Physical and Aging Properties 43 9.4.16 Retests for Thickness . 43 9.5 DIMENSIONAL MEASUREMENTS OF THE METALLIC SHIELD . 43 9.5.1 Tape Shield
28、. 43 9.5.2 Wire Shield 44 9.5.3 Sheath . 44 9.5.4 Flat Straps . 44 9.6 DIAMETER MEASUREMENT OF INSULATION AND INSULATION SHIELD . 44 9.7 TESTS FOR JACKETS . 44 9.7.1 Heat Shock (PVC only) . 44 9.7.1.1 Preparation of Test Specimen 44 9.7.1.2 Winding of the Test Specimen on Mandrels 44 9.7.1.3 Heating
29、 and Examination 45 9.7.2 Heat Distortion 45 9.7.3 Cold Elongation (PVC and LSHF only) 45 9.7.3.1 Test Temperature 45 9.7.3.2 Type of Testing Machine . 45 ICEA S-108-720-2018 DATE: 3/16/18 v 9.7.3.3 Elongation Test 45 9.8 VOLUME RESISTIVITY . 46 9.8.1 Conductor Shield. 46 9.8.2 Insulation Shield and
30、 Semiconducting Extruded Jacket Coating 46 9.8.3 Test Equipment . 46 9.8.4 Test Procedure 47 9.9 SHRINKBACK TEST PROCEDURE 47 9.9.1 Sample Preparation 47 9.9.2 Test Procedure 47 9.9.3 Pass/Fail Criteria and Procedure . 47 9.10 RETESTS ON SAMPLES. 47 9.11 AC VOLTAGE TEST 48 9.11.1 General 48 9.11.2 A
31、C Voltage Test 48 9.12 PARTIAL-DISCHARGE TEST PROCEDURE 48 9.13 DISSIPATION FACTOR AND CAPACITANCE MEASUREMENT 48 9.14 METHOD FOR DETERMINING DIELECTRIC CONSTANT AND DIELECTRIC STRENGTH OF EXTRUDED NONCONDUCTING POLYMERIC STRESS CONTROL LAYERS 49 9.15 WATER CONTENT . 49 9.15.1 Water Under the Jacket
32、 49 9.15.2 Water in the Conductor . 49 9.15.3 Water Expulsion Procedure 49 9.15.4 Presence of Water Test 49 9.16 ADHESION TESTS FOR METALLIC FOIL LAMINATES 50 9.16.1 Visual Inspection . 50 9.16.2 Adhesion Strength of Metallic Foil Laminate 50 9.16.3 Adhesion Strength of Overlap of Metallic Foil Lami
33、nate 50 9.17 PRODUCTION TEST SAMPLING PLANS . 52 Part 10 QUALIFICATION TESTS . 56 10.0 GENERAL . 56 10.1 CABLE QUALIFICATION TESTS . 56 10.1.1 Cable Design Qualification . 56 10.1.2 Cable Bending Procedure 59 10.1.2.1 Bending Diameter 59 10.1.3 Thermal Cycling Procedure 59 10.1.3.1 Thermal Cycles 59
34、 10.1.3.2 Voltage During Thermal Cycles 60 10.1.4 Hot Impulse Test Procedure . 60 10.1.5 AC Voltage Withstand Test Procedure 60 10.1.6 Partial Discharge Test Procedure (For Discharge-Free Designs Only) 60 10.1.7 Measurement of Dissipation Factor 61 10.1.8 Dissection and Analysis of Test Specimens 61
35、 10.2 JACKET MATERIAL QUALIFICATION TESTS . 61 10.2.1 Polyethylene Jackets 61 10.2.1.1 Environmental Stress Cracking Test 61 10.2.1.1.1 Test Specimen 61 10.2.1.1.2 Test Procedure . 61 10.2.1.2 Absorption Coefficient Test . 62 10.2.2 Semiconducting Extruded Jacket Coatings . 62 10.2.2.1 Brittleness T
36、emperature 62 10.2.3 Polyvinyl Chloride 62 10.2.3.1 Sunlight Resistance . 62 10.2.3.1.1 Test Samples 62 ICEA S-108-720-2018 DATE: 3/16/18 vi 10.2.3.1.2 Test Procedure . 62 10.2.4 Low Smoke Halogen Free 62 10.2.4.1 Halogen Content . 62 10.2.4.2 Smoke Generation Test 62 10.2.4.3 Acid Gas Equivalent Te
37、st 62 10.3 OTHER QUALIFICATION TESTS . 63 10.3.1 Insulation Resistance 63 10.3.2 Water Resistance Tests for EPR Designs Only Intended for Wet Locations without Radial Moisture Barrier 63 10.3.2.1 Accelerated Water Tree Test 63 10.3.3 Resistance Stability Test 63 10.3.4 Brittleness Temperature for Se
38、miconducting Shields . 63 10.3.5 Discharge Resistance Test for Discharge-Resistant EPR Designs only 63 10.3.5.1 Test Specimens . 63 10.3.5.2 Test Environment 63 10.3.5.3 Test Electrodes 64 10.3.6 Dielectric Constant and Voltage Withstand for Nonconducting Conductor Shield . 64 10.4 QUALIFICATION TES
39、TS ON CABLE SYSTEMS 64 10.4.1 General 64 10.4.2 Range of Approval 64 10.4.3 Cable System Qualification Test 65 10.4.3.1 Tests and Sequence of Tests . 65 10.4.3.2 Switching Impulse Test . 66 10.4.3.3 System Hot Impulse Test 66 10.4.3.4 Dissection and Analysis 66 10.5 PRE-QUALIFICATION TESTS ON CABLE
40、SYSTEM . 66 10.5.1 Range of Approval 67 10.5.2 Pre-Qualification Test . 67 10.5.2.1 Tests and Sequence of Tests . 67 10.5.2.2 Thermal Cycle Voltage Test 67 10.5.2.3 Pre-Qualification Hot Impulse Test . 68 Part 11 APPENDICES . 69 APPENDIX A NEMA, ICEA, IEEE AND ASTM STANDARDS (Normative) 69 A1 NEMA P
41、UBLICATIONS 69 A2 ICEA PUBLICATIONS 69 A3 IEEE STANDARDS . 69 A4 ASTM STANDARDS . 69 A5 MISCELLANEOUS STANDARDS . 71 APPENDIX B EMERGENCY OVERLOADS (Normative) . 72 APPENDIX C PROCEDURE FOR DETERMINING THICKNESS REQUIREMENTS OF THE INSULATION SHIELD, LEAD SHEATH AND JACKET (Normative) . 75 APPENDIX
42、D CABLE COMPONENT FUNCTION (Informative) . 77 D1 CONDUCTOR . 77 D1.1 Function . 77 D1.2 Material 77 D2 CONDUCTOR SHIELD 77 D2.1 Function . 77 D2.1.1 Nonconducting . 77 D2.1.2 Semiconducting . 77 D2.2 Voltage Stress . 77 D3 INSULATION . 78 D4 INSULATION SHIELD 78 D4.1 Semiconducting Shield 79 D4.2 Me
43、tallic Shield . 79 ICEA S-108-720-2018 DATE: 3/16/18 vii D5 JACKET . 79 APPENDIX E HANDLING AND INSTALLATION PARAMETERS (Informative) 81 E1 INSTALLATION TEMPERATURES . 81 E2 RECOMMENDED MINIMUM BENDING RADIUS 81 E3 DRUM DIAMETERS OF REELS 81 E4 MAXIMUM TENSION AND SIDEWALL BEARING PRESSURES . 81 E5
44、ELECTRICAL TESTS AFTER INSTALLATION . 82 E5.1 Insulation 82 E5.2 Jacket 82 APPENDIX F SUGGESTED GENERIC NOMINAL INSULATION THICKNESSES FROM AEIC CS9 (Informative) 83 APPENDIX G ADDITIONAL SHIELD WIRE AND CONDUCTOR INFORMATION (Informative) 85 APPENDIX H ETHYLENE ALKENE COPOLYMER (EAM) (Informative)
45、. 88 APPENDIX I SPECIFICATION FOR ALLOY LEAD SHEATHS (Informative). 89 I1 PURPOSE . 89 I2 MATERIAL . 89 I3 REQUIREMENTS . 89 APPENDIX J GUIDELINE FOR DEGASSING (Informative) . 90 APPENDIX K STRESS CALCULATION FOR EPR CABLES WITH A NONCONDUCTING CONDUCTOR SHIELD (Informative) 92 APPENDIX L STRUCTURAL
46、 STABILITY TEST (Informative) 93 APPENDIX M INSULATION COMPOUND INSPECTION (Normative) 94 M1 SCOPE 94 M2 PROCEDURE . 94 M2.1 Compound Tape Inspection Sampling Plan . 94 M2.2 Compound Pellet Inspection Sampling Plan 94 APPENDIX N SELECTION OF PROPER VOLTAGE CLASS (Normative) . 96 LIST OF TABLES Table
47、 2-1 Weight Increment Factors . 8 Table 2-2 Nominal Direct Current Resistance in Ohms Per 1000 Feet at 25 C of Concentric Lay Stranded and Segmental Conductor . 9 Table 2-2 (Metric) Nominal Direct Current Resistance in Milliohms Per Meter at 25 C of Concentric Lay Stranded and Segmental Conductor .
48、10 Table 2-3 Nominal Diameters for Round Copper and Aluminum Conductors 11 Table 2-3 (Metric) Nominal Diameters for Round Copper and Aluminum Conductors 12 Table 2-4 Nominal Diameters for Segmental Copper and Aluminum Conductors. 13 Table 2-5 Factors for Determining Nominal Resistance of Stranded Co
49、nductors Per 1000 Feet at 25 C 13 Table 3-1 Extruded Conductor Shield Thickness . 14 Table 3-2 Extruded Conductor Shield Protrusion and Irregularity Limits . 15 Table 3-3 Extruded Conductor Shield Interface Void Limits . 15 Table 4-1 Conductor Maximum Temperatures 17 Table 4-2 Conductor Sizes, Maximum Insulation Eccentricity, Insulation Maximum Stress and Test Voltages 19 Table 4-3 Insulation Physical Requirements . 20 Table 4-4 Test Voltages for Partial-Discharge Measurements 21 Table 4-5 Impulse Values 21 Table 4-6 Dielectric Constant and Dissipation Fa
