Excalon Completes 400kV Cable Installation for National Grid at Melksham Substation
POWER GRIDS & TRANSMISSION
Excalon Ltd executed a 400kV high-voltage cable installation at Melksham Substation for Envolve Infrastructure, supporting National Grid’s upgrade efforts. This installation included the new Shunt Reactor 2, aimed at enhancing voltage stability.
The project required meticulous planning and collaboration with various contractors within a live high-voltage setting, emphasizing safety protocols. Key tasks included cable pulling, laying, backfilling with CBS, and coordinating scaffolding for Cable Sealing End structures. Testing post-installation verified compliance with National Grid standards, confirming system readiness for energisation.

Mar 10, 2026, 6:00 AM