at200d intelligent earth wire management system is a total solution for managing temporary earth wires of substations to prevent misoperation. through reliable and practical technical means, the system realizes standard management of temporary earth wires, automatic saving of use records, real-time acquisition of earth wire status, centralized display of earth wire status and other functions. by combining with an error-proof system, it effectively prevents the occurrence of misoperation accidents of “live connection of an earth wire and closing of a circuit breaker (disconnecting switch) with an earth wire”. in addition, the system can also work independently and send earth wire status information to the dispatching, o&m center or the station end system.