Single-core Cable Sheath One End Of The Grounding Mode Why Must Install A Parallel Cable Laying Along The Reflow Line

- Jul 04, 2017-

In a cable line grounded at one end of the metal sheath, in order to ensure that the inductive voltage in the sheath does not exceed the agreed scale, it is necessary to install a conductor that is laid parallel to the cable line and grounded at both ends of the conductor, known as the Reflow line. When the single-phase grounding fault occurs, the grounding short-circuit current can flow back to the central point of the system through the Reflow line, because the magnetic flux generated by the grounding current of the reflow line offsets the flux generated by the grounding current of a department cable conductor, thus reducing the inductive voltage of the sheath during short circuit fault.