Basic introduction of single core cable

Single core refers to having only one conductor within an insulation layer. When the voltage exceeds 35kV, most single core cables are used, and the relationship between the wire core and the metal shielding layer can be regarded as the relationship between the coil and the iron core in the primary winding of a transformer. When a single core cable core passes current, there will be magnetic field lines crossing the aluminum or metal shielding layer, causing induced voltage at both ends.