Research of common faults of electrical equipments in coal mine and their troubleshooting solutions

The paper introduced recognition methods of common faults of electrical equipments in coal mine and troubleshooting solutions about power supply, control system of electrical equipment, protection system of elctrical equipment and vacuum contactor, and proposed some notes at the time of troubleshooting. Finally, it pointed out that coal mine should eliminate common faults according to occurrence probability, use information system to monitor electrical equipment and improve technique ability and professional quality of electrician.