Wire and cableIt consists of four parts: ♥∏‌‍conductor, insulation layer, shiel♣Ω$ding layer, and protective×ε layer.　　

(1) Conductor 　　

Conductors are the conductive parts ofΩ←π wires and cables, used to ☆βtransmit electrical $∑‌€energy and are the main comp'₽onents of wires and cables. 　　

(2) Insulation layer　　

The insulation layer is an±≤© essential component in the structu'φre of wires and cables, whic↓₽h electrically isolates conducΩ↔∑tors from the ground and condu↔∑ ★ctors of different phases ∞♥✔to ensure the transmission of electrica£✔←l energy.　

　

(3) Shielding layer　　

Wires and cables of 15KV andα∏ above generally have conductor shiel✘→↑↔ding layers and insulatΩ∏↓≤ion shielding layers.　　

(4) Protective layer 　　

The function of the wire protec‌≤•βtion layer is to protect ✔ the wire and cable fλπ☆≤rom the invasion of external✔♠♣ impurities and moisture, as well as→‍↕  to prevent direct damage to the po‌$wer cable from external forces.