Abstract: Aiming at the insufficiency of the current methods to solve the grounding fault of the locomotive electrical circuit, a locomotive AC/DC grounding fault diagnosis system based on ARM embedded system is proposed, and the working principle and hardware and software design of the system are introduced in detail. The system adopts precise detection means and unique analysis methods, which can quickly and accurately locate the grounding fault point and fault type. The flexible and diverse communication methods facilitate the storage and upload of fault information, as well as the unified management of the locomotive depot. Experiments have proved that the system has high detection accuracy and stable operation, and has great promotion value.
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