单芯电力电缆接地施工技术

Construction Technologies of Single Core Power Cable Grounding

单芯电力电缆在运行中金属屏蔽和铠装层两端接地,会在金属屏蔽和铠装层中形成环流,引起电缆发热,影响电缆载流量;如果一端接地,则另一端就会出现感应电压,危及人身和设备安全。针对这两种情况,介绍了在安哥拉市政电力工程实际施工中采取的方法和措施。

When both ends of the metal sheath and armoured level are grounded,circulation will occur there during the operation of the single core power cable,which causes heat in cables and affects their current carrying capacity.On the other hand,if only one end is connected,inductive voltage will be created on the other end,endangering people and equipment.This paper,in accordance with the two different conditions,introduces our actual methods and measures adopted in Angola municipal power engineering.