GB 50217-2007 电力工程电缆设计规范 - 工标库
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GB 50217-2007 电力工程电缆设计规范废止
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Announcement of Ministry of Construction of the People s Republic of China
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Foreword
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1 General
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2 Terms and Definitions
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3 Selection of Cable Type and Cross-section
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3.1 Material of Cable Conductor
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3.2 Number of Power Cable Cores
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3.3 Cable Insulation Level
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3.4 Type of Cable Insulation
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3.5 Type of External Sheath of Cable
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3.6 Control Cable and Metal Shielding
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3.7 Cross-section of Power Cables
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4 Selection and Configuration of Cable Accessories
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4.1 General Provisions
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4.2 Oil Supply Systems of Self-contained Oil-filled Cables
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5 Cable Laying
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5.1 General Provisions
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5.2 Selection of Laying Mode
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5.3 Underground Direct Burying
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5.4 Laying of Protection Conduits
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5.5 Cable Structures Laying
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5.6 Cable Laying in Other Utilities
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5.7 Underwater Cable Laying
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6 Cable Supports and Fixings
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6.1 General Provisions
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6.2 Cable Supports and Trays
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7 Fire Protection and Retardation of Cables
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Appendix A Maximum Allowable Temperature of Common Power Cable Conductor
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Appendix B Section Selection Methods for Economic Current of Power Cable Rated 10kV and below
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Appendix C Allowable 100% Continuous Ampacity of Common Power Cables Rated 10kV and below
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Appendix D Correction Factors of Allowable Continuous Ampacity of Cables Under Different Laying Conditions
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Appendix E Methods for Calculation of Allowable Minimum Cross-section of Cable Conductor Based on the Short-circuit Thermal Stability Conditions
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E.1 Allowable Minimum Cross-section of Conductors of Solid Insulated Cables
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E.2 Allowable Minimum Cross-section of Conductors for Self-contained Oil-filled Cables
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Appendix F Calculation Formula of Normal Induced Potential of Metallic Layer of Single-core Cables of AC System
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Appendix G Additional Length of Cables Rated 5kV and Below During Laying Measurement
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Appendix H Calculation Methods for Maximum Allowable Length of Conduits in case of Penetrating Cables through Conduits
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Explanation of Wording in This Code
