中华人民共和国住房和城乡建设部公告

前　　言

1　总　　则

2　术　　语

3　电缆型式与截面选择

• 3.1　电力电缆导体材质

• 3.2　电力电缆绝缘水平

• 3.3　电力电缆绝缘类型

• 3.4　电力电缆护层类型

• 3.5　电力电缆芯数

• 3.6　电力电缆导体截面

• 3.7　控制电缆及其金属屏蔽

4　电缆附件及附属设备的选择与配置

• 4.1　一般规定

• 4.2　自容式充油电缆的供油系统

5　电缆敷设

• 5.1　一般规定

• 5.2　敷设方式选择

• 5.3　电缆直埋敷设

• 5.4　电缆保护管敷设

• 5.5　电缆沟敷设

• 5.6　电缆隧道敷设

• 5.7　电缆夹层敷设

• 5.8　电缆竖井敷设

• 5.9　其他公用设施中敷设

• 5.10　水下敷设

6　电缆的支持与固定

• 6.1　一般规定

• 6.2　电缆支架和桥架

7　电缆防火与阻止延燃

附录A　常用电力电缆导体的最高允许温度

附录B　10kV及以下电力电缆经济电流截面选用方法和经济电流密度曲线

附录C　10kV及以下常用电力电缆100%持续允许载流量

附录D　敷设条件不同时电缆持续允许载流量的校正系数

附录E　按短路热稳定条件计算电缆导体允许最小截面的方法

• E.1　固体绝缘电缆导体允许最小截面

• E.2　自容式充油电缆导体允许最小截面

附录F　交流系统单芯电缆金属套的正常感应电势计算方法

附录G　35kV及以下电缆敷设度量时的附加长度

附录H　电缆穿管敷设时允许最大管长的计算方法

本标准用词说明

引用标准名录

1　General provisions

2　Terms

3　Selection of cable type and cross-section

• 3.1　Material of power cable conductor

• 3.2　Power cable insulation level

• 3.3　Type of power cable insulation

• 3.4　Type of external sheath of power cable

• 3.5　Number of power cable cores

• 3.6　Cross-section of power cable conductor

• 3.7　Control cable and metal shielding

4　Selection and configuration for cable accessories and accessorial devices

• 4.1　General requirements

• 4.2　Oil supply system of self-contained oil-filled cable

5　Cable routing

• 5.1　General requirements

• 5.2　Selection of laying mode

• 5.3　Cable directly buried

• 5.4　Cable routing in protection conduits

• 5.5　Cable routing in cable trench

• 5.6　Cable routing in cable tunnel

• 5.7　Cable routing in cable mezzanine

• 5.8　Cable routing in cable shaft

• 5.9　Cable routing in other utilities

• 5.10　Underwater cable laying

6　Cable supports and fixings

• 6.1　General requirements

• 6.2　Cable supports and trays

7　Fire prevention and retardation of cables

Appendix A　Maximum allowable temperature of common power cable conductor

Appendix B　Selection methods and density curves for economic current cross-section of power cable rated 10kV and below

Appendix C　Allowable 100% continuous ampacity of common power cable rated 10kV and below

Appendix D　Correction factors of allowable continuous ampacity of cables under different laying conditions

Appendix E　Methods for calculation of allowable minimum cross-section of cable conductor based on the short-ciruit thermal stability conditions

Appendix F　Calculation methods of normal induced potential of metallic layer of single-core cables of AC system

Appendix G　Additional length of cables rated 35kV and below during laying measurement

Appendix H　Calculation methods for maximum allowable length of conduits in case of putting cables through conduits

Explanation of wording in this standard

List of quoted standards