NJ2型机车接地故障的GDA检测方法探究

Study on the GFA Detection Method of NJ2 locomotive Ground Fault

针对NJ2型机车的接地故障,介绍了故障检测设备GDA的电路及接线,探讨了辅助电路和牵引系统的接地故障检测电路,分析了蓄电池充电电路、辅助电动机、励磁电路和牵引系统的故障类型及GDA检测方法。

This paper introduced the circuit and wiring diagram of GDA detection equipment for ground faults on model NJ2 locomotives,analyzed the ground faults detection circuit diagram in auxiliary circuit and the traction system,and described failure types and detection principles in battery charging circuit,auxiliary motors,excitation circuit and the traction system.