电力电缆的类型、路径、敷设方式的选择

Selection of Types,Routes and Laying Modes of Power Cables

对电力电缆的类型、路径、敷设方式进行了探讨。提出从原料要素、生产厂的技术设备、售后等方面了解电缆质量;介绍如何根据运行环境和电压等级选择电缆,以及选择电缆截面需考虑的因素;介绍在城市电网中电缆线路路径选择应遵循的三个原则:统一规划原则、安全运行原则、经济合理原则,以及电力电缆敷设方式(直埋式、沟道式、巷道式)的选择。

Research has been made on types, routes and laying modes of power cables. It is presented that the quality of cables shall be understood from aspects of raw material element, technological equipments of the production plant and after-sale service. The following contents have been introduced, i.e., how to select cables according to the operating environment and voltage grade and the factors required for the selection of the cross-section of cables; the three principles which shall be abided by in the selection of cable wiring route in the electric network of the city： unified planning principle, safe operation principle and principle of economic rationality; as well as the selection of the laying modes of the power cables （direct burial, trench type and roadway type）.