ABSTRACT
Ground shield wire plays a critical role in electric power operation, Shield wire is set between the interference sources and secondary loop. It not only can shield the crosstalk between interference and cables but also can reduce the wastage of the transmitted signal. At present, most of the switch cabinet of busbar shielded wire exists serious corrosion phenomenon, shielding wire corrosion fracture will cause relay protector and safety automatic device failure, and even damage other electronic components. It may also cause some unexplained faults in the circuit, which seriously affected the normal operation of the power grid.
