煤矿中央变电所小电流接地选线装置常见故障与维护

Common fault and maintenance of grounding line selection device for low current in the central substation of coal mine

本文主要针对煤矿中性点接地系统特点及发生单相接地时故障查找存在的问题,分析了小电流接地选线装置在现场使用过程中影响选线准确性的因素。

The paper mainly aimed at I he chaiacteristics of the mine neutral grounding system and the existing problem on finding the single- phase grounding fault, analyses the factors affecting the accuracy of faull line selection in low current grounding line selection device, and proposed lo improve llie alignment accuracy measures accoriling lo many years practice.