What is the connection mode of the return cable on the rail?
After the two connection, the tested cable is passed through the current transformer.
Current transformer installation should pay attention to several points: one is the two circuit transformer is not allowed to open, to prevent the generation of high voltage induction harm, two is the two circuit grounding point, three is the current level of transformer should be greater than or equal to the maximum current in the main circuit, otherwise will exceed the current table
