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大型露天矿山,大都采用标准轨距、1500伏直流电力机车牵引铁路运输。整流设备为大型硅整流装置。为防止在直流母线上出现由雷电和操作引起的过电压损坏硅整流和其它供电设备,采用1.65千伏直流避雷器作为过电压保护装置。运行中,经常发生直流避雷器爆炸事故,严重影响设备和人身安全。避雷器爆炸原因是多方面的,涉及到避雷器的制造参数、工艺结构和保护水平等。而避雷器制造参数的确定,又与硅整流器及直流供电设备的绝缘水平密切相
Large open-pit mines, most of the standard gauge, 1500V DC locomotive traction rail transport. Rectifier equipment for large-scale silicon rectifier. In order to prevent over-voltage damage caused by lightning and operation on the DC bus, silicon rectifier and other power supply equipment, 1.65 kV DC arrester is used as over-voltage protection device. During operation, DC arrester explosions often occur, seriously affecting equipment and personal safety. Arrester explosion is multifaceted, relates to the arrester manufacturing parameters, process structure and protection level. The arrester manufacturing parameters to determine, but also with the silicon rectifier and DC power supply equipment, the level of insulation close