The basic structure of a power cable consists of four parts: core (conductor), insulating layer, shielding layer and protective layer.
Core
The core is the conductive part of the power cable, used to transmit electrical energy, and is the main part of the power cable.
Insulation
The insulating layer electrically isolates the core from the earth and the cores of different phases from each other to ensure the transmission of electric energy. It is an indispensable part of the power cable structure.
Shield
Power cables of 15KV and above generally have conductor shielding layer and insulating shielding layer.
The protective layer
The function of the protective layer is to protect the power cable from the intrusion of external impurities and moisture, and to prevent the power cable from being directly damaged by external forces.
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