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一、加信号隔离变压器的由来 电气集中车站为了保证设备的正常运用,过去每年都要对信号电缆进行停电测试。为了避免对行车干扰,近几年采用了不停电测试电缆对地绝缘。 信号楼去室外的电缆主要有信号点灯芯线、道岔动作芯线及表示线、轨道受电芯线三种.道岔四条芯线通过道岔表示变压器隔离可以直接测试对地绝缘,轨道受电芯线是经过BZ_4变压器接入的,也可以直接测试出对地绝缘。信号点灯无论有多少架信号机都并联使用一个电源(旧大站电源屏点灯用一个变压器)。并联电缆芯线越多测试对地绝
First, the origin of the signal isolation transformer Electrical centralized station In order to ensure the normal operation of equipment, in the past every year on the signal cable power failure test. In order to avoid interference on the road in recent years using non-power test cables to ground insulation. Signal to the outdoor cable signal lights are the main core line, turnout movement of the core line and the representation of the line, the track by the power of the three kinds of cores.The turnout of the four cores through the switch transformer isolation can be directly tested on the ground insulation, Is through the BZ_4 transformer access, you can also directly test the ground insulation. No matter how many signal lights are used in parallel, a power supply is used. Parallel cable core test more to ground absolutely