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简要介绍HXD3型机车辅助电路接地保护工作原理,分析其保护动作时故障处理的难度与隐患,针对其误动作后隔离切除困难问题,提出了改进方法,并在HXD3 8045机车上实施。
This paper briefly introduces the working principle of grounding protection for auxiliary circuit of HXD3 locomotive and analyzes the difficulty and hidden trouble of its protection during its operation. Aiming at the problem of isolation and removal after malfunction, this paper proposes an improved method and implements it on HXD3 8045 locomotive.