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在铁路站场电力配套设计中,给扳道房、道口房等敷设电源引入线时,由于地形的限制,不能架空引入,需采用电缆敷设,电缆敷设好坏的关键是电缆头的制作与安装,电缆头制作安装不严,电缆易受潮,影响绝缘性能,再加上南方气候炎热,枕木钢轨附近气温可高达50℃,电缆内的柏油溶化渗漏出来,潮气乘虚而入,使电缆的绝缘性能降低,天长日久,形成故障,影响站场设备的使用,维修很麻烦。经研究试用塑料护套代替电缆,选用一种
In the electric railway station yard supporting design, when the power supply lead-in to the crossing road house, the crossing house and so on is laid, due to the limitation of the terrain, it can not be introduced overhead. The key to good or bad cable laying is to make and install the cable head, Cable head production and installation is not strict, the cable susceptible to damp, affecting the insulation properties, coupled with the hot climate in the south, sleepers near the rail temperature can be as high as 50 ℃, the asphalt melt in the cable leak out, take advantage of moisture to make the insulation properties of the cable Reduce, over time, the formation of failure, affecting the use of station equipment, maintenance is very troublesome. After the study tried plastic sheath instead of cable, choose one