Discussion on the Electric Leakage of Insulated Flange

The electric leakage of insulated flange will narrow the effective protection scope and widen the output current for CP station. Three methods to judge the electric leakage of flange are put forward, that is, current direction method, pipeline current method and earth resistance method. The paper describes the hazard of electric leakage, analyzes the cause of electric leakage and presents corresponding measures to eliminate electric leakage.