1、 STANDARD FOR EXTRUDED INSULATION POWER CABLES RATED ABOVE 46 THROUGH 345 KV Approved by AMERICAN NATIONAL STANDARDS INSTITUTENovember 27, 2012 Publication # ANSI/ICEA S-108-720-2012 2012 by ICEA INSULATED CABLE ENGINEERS ASSOCIATION, Inc ANSI/ICEA S-108-720-2012 ICEA S-108-720-2012 STANDARD FOR EXT
2、RUDED INSULATION POWER CABLES RATED ABOVE 46 THROUGH 345 KV StandardICEA S-108-720-2012 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 6, 2012 Accepted by AEIC: Cable Enginee
3、ring Committee: March 4, 2010 Approved by ANSI: November 27, 2012 Typographical error corrected in Table 9-3 on 3/6/13 Copyright 2012 by the Insulated Cable Engineers Association, Inc. All rights including translation into other languages, reserved under the Universal Copyright Convention, the Berne
4、 Convention for the Protection of Literary and Artistic Works, and the international and Pan American Copyright Conventions. ICEA S-108-720-2012 DATE: 11/27/12 i FOREWORD This Standards Publication for Extruded Insulation Power Cables Rated above 46 to 345 kV (ICEA S-108-720) was developed by the In
5、sulated 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 and obtaining the proper product for his particular need. Existence o
6、f 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 relative to the manufacture and use of cable made in conformity with this S
7、tandard. Requests for 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
8、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 Technical Advisory Committee (U
9、PCSTAC), 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 consisted of the following: F. Ku
10、chta, Chairman E. Bartolucci R. Bristol J. Cancelosi B. Crawford D. Elder B. Fleming L. Hiivala D. Masakowski K. Nuckles A. Pack B. Temple R. Thrash B. Vaughn E. Walcott ICEA S-108-720-2012 DATE: 11/27/12 ii TABLE OF CONTENTS Part 1 GENERAL 1 1.1 SCOPE 1 1.2 GENERAL INFORMATION . 1 1.3 INFORMATION T
11、O 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 Cable . 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 PHYSI
12、CAL 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 72.2 OPTIONAL WATER BLOCKING COMPONENTS FOR STRANDED CONDUCTORS 7 2.3 CONDUCTOR SIZE UNITS . 7 2.4 CONDUCTOR DC RESISTANCE . 7 2.4.1 Direct Measurement
13、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 EXTRUDED CONDUCTOR SHIELD THICKNESS 14 3.3 PROTRUSIONS AND IRREGULARITIES 14 3.4 VOIDS . 15 3.5 PHYSICAL REQUIREMENTS . 15 3.6 ELECTRICA
14、L 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 . 15 3.7 CROSSLINKED (THERMOSET) REQUIREMENTS 15 Part 4 INSULATION 16 4.1 MATERIAL . 16 4.2 INSULATION THICKNESS . 16 4.2.1 Selection of Proper
15、 Thickness 17 4.2.2 Insulation Eccentricity . 18 4.3 INSULATION REQUIREMENTS . 18 4.3.1 Physical and Aging Requirements . 18 4.3.2 Electrical Test Requirements 19 4.3.2.1 Partial-Discharge for Discharge-Free Designs only . 19 4.3.2.2 Voltage Tests . 20 4.3.2.3 Insulation Resistance Test 20 4.3.2.4 D
16、ielectric Constant and Dissipation Factor. 21 4.3.2.5 Discharge (Corona) Resistance for Discharge-Resistant EPR Designs only . 21 ICEA S-108-720-2012 DATE: 11/27/12 iii 4.3.3 Voids, Ambers, Gels, Agglomerates and Contaminants as Applicable 21 4.3.3.1 Crosslinked Polyethylene Insulation (XLPE) 21 4.3
17、.3.2 Ethylene Propylene Rubber (EPR) . 21 4.3.4 Shrinkback - Crosslinked Polyethylene Insulation (XLPE) Only . 21 Part 5 EXTRUDED INSULATION SHIELD 23 5.1 MATERIAL . 23 5.2 EXTRUDED INSULATION SHIELD THICKNESS . 23 5.3 PROTRUSIONS AND IRREGULARITIES 23 5.4 VOIDS . 23 5.5 PHYSICAL REQUIREMENTS . 23 5
18、.6 ELECTRICAL REQUIREMENTS 24 5.5.1 Extruded Semiconducting Material . 24 5.5.2 Semiconducting Tape . 24 5.7 CROSSLINKED (THERMOSET) REQUIREMENTS 24 Part 6 METALLIC SHIELDING . 25 6.1 GENERAL 25 6.2 SHIELDS 25 6.2.1 Helically Applied Tape Shield . 25 6.2.2 Longitudinally Applied And Overlapped Corru
19、gated Tape Shield . 25 6.2.3 Wire Shield 25 6.2.4 Flat Strap Shield 26 6.3 SHEATHS . 26 6.3.1 Lead Sheath 26 6.3.2 Smooth Aluminum Sheath 26 6.3.3 Continuously Corrugated Sheath . 26 6.4 RADIAL MOISTURE BARRIER 27 6.4.1 Bonded Metallic Foil Laminates . 27 6.5 OPTIONAL LONGITUDINAL WATER BLOCKING COM
20、PONENTS . 27 Part 7 JACKET 28 7.1 MATERIAL . 28 7.1.1 Polyethylene, Black . 28 7.1.2 Polyvinyl Chloride 29 7.2 JACKET APPLICATION AND THICKNESS 30 7.2.1 Thickness of Jacket for Tape, Wire Shield and Metallic Foil Laminate . 30 7.2.2 Thickness of Jacket for Sheaths . 30 7.3 OPTIONAL SEMICONDUCTING CO
21、ATING 30 7.4 JACKET IRREGULARITY INSPECTION . 30 7.4.1 Jackets without Optional Semiconducting Coating 30 7.4.2 Jackets with Optional Semiconducting Coating . 30 Part 8 CABLE IDENTIFICATION . 33 8.1 CABLE IDENTIFICATION . 33 8.1.1 Optional Center Strand Identification . 33 8.1.2 Optional Sequential
22、Length Marking 33 Part 9 PRODUCTION TESTS . 34 9.1 TESTING 34 9.2 SAMPLING FREQUENCY. 34 9.3 CONDUCTOR TEST METHODS 34 ICEA S-108-720-2012 DATE: 11/27/12 iv 9.3.1 Method for DC Resistance Determination . 34 9.3.2 Cross-Sectional Area Determination 34 9.3.3 Diameter Determination 34 9.4 TEST SAMPLES
23、AND SPECIMENS FOR PHYSICAL AND AGING TESTS 34 9.4.1 General 34 9.4.2 Measurement of Thickness 34 9.4.2.1 Micrometer Measurements . 35 9.4.2.2 Optical Measuring Device Measurements 35 9.4.3 Number of Test Specimens 35 9.4.4 Size of Specimens 35 9.4.5 Preparation of Specimens of Insulation and Jacket
24、. 36 9.4.6 Specimen for Aging Test 36 9.4.7 Calculation of Area of Test Specimens 36 9.4.8 Unaged Test Procedures 36 9.4.8.1 Test Temperature 36 9.4.8.2 Type of Testing Machine . 36 9.4.8.3 Tensile Strength Test 37 9.4.8.4 Elongation Test 37 9.4.9 Aging Tests . 37 9.4.9.1 Aging Test Specimens 37 9.4
25、.9.2 Air Oven Test . 38 9.4.9.3 Oil Immersion Test for Polyvinyl Chloride Jacket . 38 9.4.10 Hot Creep Test 38 9.4.11 Solvent Extraction . 38 9.4.12 Wafer Boil Test for Conductor and Insulation Shields . 38 9.4.13 Amber, Agglomerate, Gel, Contaminant, Protrusion, Irregularity and Void Test 38 9.4.13
26、.1 Sample Preparation . 38 9.4.13.2 Examination . 38 9.4.13.3 Resampling for Amber, Agglomerate, Gel, Contaminant, Protrusion, Irregularity and Void Test . 39 9.4.13.4 Protrusion and Irregularity Measurement Procedure . 39 9.4.14 Physical Tests for Semiconducting Material Intended for Extrusion . 40
27、 9.4.14.1 Test Sample . 40 9.4.14.2 Test Specimens . 40 9.4.14.3 Elongation 40 9.4.15 Retests for Physical and Aging Properties and Thickness 40 9.5 DIMENSIONAL MEASUREMENTS OF THE METALLIC SHIELD . 40 9.5.1 Tape Shield . 40 9.5.2 Wire Shield 40 9.5.3 Sheath . 41 9.5.4 Flat Straps . 41 9.6 DIAMETER
28、MEASUREMENT OF INSULATION AND INSULATION SHIELD . 41 9.7 TESTS FOR JACKETS . 41 9.7.1 Heat Shock (PVC only) . 41 9.7.1.1 Preparation of Test Specimen 41 9.7.1.2 Winding of the Test Specimen on Mandrels . 41 9.7.1.3 Heating and Examination 42 9.7.2 Heat Distortion . 42 9.7.3 Cold Elongation (PVC only
29、) 42 9.7.3.1 Test Temperature 42 9.7.3.2 Type of Testing Machine . 42 9.7.3.3 Elongation Test 42 9.8 VOLUME RESISTIVITY . 43 ICEA S-108-720-2012 DATE: 11/27/12 v 9.8.1 Conductor Shield . 43 9.8.2 Insulation Shield and Semiconducting Extruded Jacket Coating 43 9.8.3 Test Equipment . 44 9.8.4 Test Pro
30、cedure 44 9.9 SHRINKBACK TEST PROCEDURE . 44 9.9.1 Sample Preparation 44 9.9.2 Test Procedure 44 9.9.3 Pass/Fail Criteria and Procedure 44 9.10 RETESTS ON SAMPLES . 44 9.11 AC VOLTAGE TEST 45 9.11.1 General 45 9.11.2 AC Voltage Test 45 9.12 PARTIAL-DISCHARGE TEST PROCEDURE 45 9.13 METHOD FOR DETERMI
31、NING DIELECTRIC CONSTANT AND DIELECTRIC STRENGTH OF EXTRUDED NONCONDUCTING POLYMERIC STRESS CONTROL LAYERS 45 9.14 WATER CONTENT . 46 9.14.1 Water Under the Jacket 46 9.14.2 Water in the Conductor . 46 9.14.3 Water Expulsion Procedure 46 9.14.4 Presence of Water Test 46 9.15 ADHESION TESTS FOR METAL
32、LIC FOIL LAMINATES 46 9.15.1 Visual Inspection . 46 9.15.2 Adhesion Strength of Metallic Foil Laminate . 47 9.15.3 Adhesion Strength of Overlap of Metallic Foil Laminate . 47 9.16 PRODUCTION TEST SAMPLING PLANS 49 Part 10 QUALIFICATION TESTS . 52 10.0 GENERAL . 52 10.1 CABLE QUALIFICATION TESTS . 52
33、 10.1.1 Cable Design Qualification . 52 10.1.2 Cable Bending Procedure. 55 10.1.2.1 Bending Diameter 55 10.1.3 Thermal Cycling Procedure 55 10.1.3.1 Thermal Cycles 55 10.1.3.2 Voltage During Thermal Cycles 56 10.1.4 Hot Impulse Test Procedure . 56 10.1.5 AC Voltage Withstand Test Procedure 56 10.1.6
34、 Partial Discharge Test Procedure (For Discharge-Free Designs Only) 56 10.1.7 Measurement of Dissipation Factor 56 10.1.8 Dissection and Analysis of Test Specimens 57 10.2 JACKET MATERIAL QUALIFICATION TESTS . 57 10.2.1 Polyethylene Jackets 57 10.2.1.1 Environmental Stress Cracking Test 57 10.2.1.1.
35、1 Test Specimen 57 10.2.1.1.2 Test Procedure . 57 10.2.1.2 Absorption Coefficient Test . 57 10.2.2 Semiconducting Extruded Jacket Coatings . 58 10.2.2.1 Brittleness Temperature 58 10.2.3 Polyvinyl Chloride 58 10.2.3.1 Sunlight Resistance . 58 10.2.3.1.1 Test Samples 58 10.2.3.1.2 Test Procedure . 58
36、 ICEA S-108-720-2012 DATE: 11/27/12 vi 10.3 OTHER QUALIFICATION TESTS . 58 10.3.1 Insulation Resistance 58 10.3.2 Accelerated Water Absorption Tests 58 10.3.3 Resistance Stability Test . 59 10.3.4 Brittleness Temperature for Semiconducting Shields 59 10.3.5 Discharge Resistance Test for Discharge-Re
37、sistant EPR Designs only 59 10.3.5.1 Test Specimens . 59 10.3.5.2 Test Environment 59 10.3.5.3 Test Electrodes 60 10.3.6 Dielectric Constant and Voltage Withstand for Nonconducting Conductor Shield . 60 Part 11 APPENDICES . 61 APPENDIX A NEMA, ICEA, IEEE, ASTM AND ANSI STANDARDS (Normative) . 61 A1
38、NEMA PUBLICATIONS 61 A2 ICEA PUBLICATIONS 61 A3 IEEE AND ANSI STANDARDS 61 A4 ASTM STANDARDS . 61 APPENDIX B EMERGENCY OVERLOADS (Normative) . 64 APPENDIX C PROCEDURE FOR DETERMINING THICKNESS REQUIREMENTS OF THE INSULATION SHIELD, LEAD SHEATH AND JACKET (Normative) 67 APPENDIX D CABLE COMPONENT FUN
39、CTION (Informative) 69 D1 CONDUCTOR . 69 D1.1 Function . 69 D1.2 Material 69 D2 CONDUCTOR SHIELD 69 D2.1 Function . 69 D2.1.1 Nonconducting 69 D2.1.2 Semiconducting 69 D2.2 Voltage Stress . 69 D3 INSULATION . 70 D4 INSULATION SHIELD 70 D4.1 Semiconducting Shield 71 D4.2 Metallic Shield 71 D5 JACKET
40、. 71 APPENDIX E HANDLING AND INSTALLATION PARAMETERS (Informative) 73 E1 INSTALLATION TEMPERATURES . 73 E2 RECOMMENDED MINIMUM BENDING RADIUS 73 E3 DRUM DIAMETERS OF REELS 73 E4 MAXIMUM TENSION AND SIDEWALL BEARING PRESSURES . 73 E5 ELECTRICAL TESTS AFTER INSTALLATION 74 E5.1 Insulation 74 E5.2 Jack
41、et . 74 APPENDIX F TRADITIONAL INSULATION WALL THICKNESS (Informative) . 75 APPENDIX G ADDITIONAL SHIELD WIRE AND CONDUCTOR INFORMATION (Informative)76 APPENDIX H ETHYLENE ALKENE COPOLYMER (EAM) (Informative) . 79 APPENDIX I SPECIFICATION FOR ALLOY LEAD SHEATHS (Informative) . 80 I1 PURPOSE . 80 I2
42、MATERIAL 80 I3 REQUIREMENTS . 80 APPENDIX J GUIDELINE FOR DEGASSING (Informative) . 81 APPENDIX K STRESS CALCULATION FOR EPR CABLES WITH A NONCONDUCTING CONDUCTOR SHIELD (Informative) . 83 ICEA S-108-720-2012 DATE: 11/27/12 vii LIST OF TABLES Table 2-1 Weight Increment Factors . 8 Table 2-2 Nominal
43、Direct Current Resistance in Ohms Per 1000 Feet at 25 g113Cof Concentric Lay Stranded and Segmental Conductor . 9 Table 2-2 (Metric) Nominal Direct Current Resistance in Milliohms Per Meter at 25 g113Cof Concentric Lay Stranded and Segmental Conductor . 10 Table 2-3 Nominal Diameters for Round Coppe
44、r 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 Conductors Per 1000 Feet at 25 g113C 13 Table 3
45、-1 Extruded Conductor Shield Thickness 14 Table 4-1 Conductor Maximum Temperatures 16 Table 4-2 Conductor Sizes, Maximum Insulation Eccentricity, Insulation Maximum Stress and Test Voltages . 18Table 4-3 Insulation Physical Requirements 19 Table 4-4 Partial-Discharge Requirements. 19 Table 4-5 Test
46、Voltages for Partial-Discharge Measurements 20 Table 4-6 Impulse Values 20 Table 4-7 Dielectric Constant and Dissipation Factor 21 Table 4-8 Shrinkback Test Requirements 22 Table 5-1 Insulation Shield Thickness 23 Table 6-1 Lead Sheath Thickness 26 Table 7-1 Polyethylene, Black 28 Table 7-2 Polyviny
47、l Chloride . 29 Table 7-3 Semiconducting Extruded Coating 31 Table 7-4 Jacket Thickness and Test Voltage for Tape, Wire Shield or Metallic Foil Laminate Cables 31 Table 7-5 Jacket Thickness and Test Voltage for All Sheath Cables . 32 Table 9-1 Test Specimens for Physical and Aging Tests . 35 Table 9
48、-2 Bending Requirements for Heat Shock Test 42 Table 9-3 Summary of Production Tests and Sampling Frequency Requirements . 49 Table 9-4 Plan E . 51 Table 9-5 Plan F 51 Table 10-1 Generic Grouping of Cable Components 53 Table 10-2 Accelerated Water Absorption Properties 59 Table D-1 Jacket Functions
49、72 Table E-1 Recommended Minimum Bending Radius . 73 Table F-1 Traditional Insulation Thickness from AEIC CS7-93, Test Voltages and Conductor Sizes 75 Table G-1 Solid Copper Shield Wires 76 Table G-2 Concentric Stranded Class B Aluminum and Copper Conductors . 77 Table G-3 Concentric Stranded Class C and D Aluminum and Copper Conductors 78 Table I-1 Chemical Requirements for Alloy Lead Sheaths . 80 ICEA S-108-720-2012 DATE: 11/27/12 1 Part 1 GENERAL 1.1 SCOPE This standard applies to materials, constructions, and testing of crosslinked polyethylene (XLPE) and ethyl
