This rule is prepared for the purpose of meeting the demands for design and construction of urban power cables and is intended to specify the main technical design requirement of urban power cables rated AC 220 kV and below in China. Appendix A， Appendix B， Appendix F and Appendix H to this rule are normative. Appendix C， Appendix D， Appendix E and Appendix G to this rule are informative. This rule is proposed by China Electricity Council. This rule is solely managed and interpreted by the Technical Committee on Electric Power Planning and Engineering of Standardization Administration of Power Industry. Drafting Organization Shanghai Electric Power Design Institute Co.， Ltd. Chief drafting staff: Gong Zun， Zhu Aijun， Li Guozheng， Shi Chuanqing and Zhou Dexin. This rule is translated by SUNTHER Consulting Co.， Ltd. under the authority of China Electric Power Planning & Engineering Association.
7 Selection of Cable Configuration 7.1 General Provisions 7.2 Selection of Insulation Shield, Metallic Sheaths, Armors and Oversheaths 7.3 Cable Conductors
8 Selection of Cable Accessories 8. I General Provisions 8.2 Types of Cable Terminations and Joints 8.3 Construction of Cable Terminations and Joints 8.4 Cable Termination Supports 8.5 Overvoltage Protection
9 Design of Oil Supply System of Self-contained Oil-filled Cable 10 Grounding Modes of Metallic Sheath or Shield Layer 11 Selection of Cable Supports and Clamps
12 Process Design of Cable Tunne 12. I General Requirements 12.2 Cable Tunnel Interfaces 12.3 Auxiliary Facilities in Cable Tunne
13 Fire Fighting Design of Cables 13.1 Selection of Flame Retardant Cables 13.2 Fire Fighting Design of the Cable Raceway and Cable Mezzanine of Substation 13.3 Fire Protection Design of Cable Tunnel, Cable Trench and Cable Shaft
Appendix A (Normative) Explanation of Wording in this Rule Appendix B (Normative) Calculation of the pulling force and the lateral pressure Appendix C (Informative) Calculation of length of the cable duct manhole C. I Calculation of the length of the cable duct manhole Appendix D (Informative) Lateral displacement, thermal expansion, and axial force of snaking arc D.1 Calculation of the lateral displacement of the snaking arc D.2 Calculation formula of thermal expansion D.3 Calculation formula of the axial force of the snaking arc D.4 Calculation of the number and installation positions of clamps needed for vertical laying of cables ……
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