How High Voltage Underground Cables Are Made and Installed

Discover how high-voltage underground cables are manufactured to safely carry hundreds of thousands of volts. From conductor stranding and XLPE triple extrusion to shielding, water protection, and the outer sheath, this video explores the complete manufacturing process and the engineering behind each layer.

in this video:
00:00 High-Voltage Electrical Discharge
00:40 Inside a High-Voltage Cable
01:09 Conductor Manufacturing
02:19 Triple Extrusion Process
04:47 XLPE Insulation & Semiconductive Screens
05:07 Controlling the Electric Field
06:10 Metallic Screen
07:14 Water Protection & Outer Sheath
08:09 Steel Wire Armor
08:43 Outer Sheath & Final Cable Manufacturing
09:40 525 kV HVDC Cable Project
10:58 Trenching & Cable Laying
13:19 Horizontal Directional Drilling
15:16 Final Installation