Short circuit and ground fault display device can be used to detect medium and high voltage power system short-circuit

Short circuit and ground fault display device can be used to detect medium and high voltage electric power system short-circuit or ground fault, the device has the strength of  electric meter  isolation, safety, ease of installation, low energy consumption and low cost. DC contactors developed on the basis of intelligent hybrid DC contactors. The first  mcb circuit breaker  of the contactor power electronic devices to complete the current transfer DC contactors and breaking when closed, to achieve DC contactor no arc operation. No arc making and breaking the DC contactor institutions significantly reduced electrical life and reliability significantly improved, with good prospects.