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Circuit Breaker Replacement Scheme

400kV Exeter

Circuit Breaker Replacement Scheme

—Removal of redundant air blast circuit breaker on the Chickerall feeder circuit and installation of new SF6 gas circuit breaker.
Removal of redundant SF6 gas filled CT’s and installation of new busbars, post insulators and earthing.

  • —Site management - SWA
  • —Removal of redundant CB and CT’s  - Protection Installation
  • —Installation of new Mitsubishi CB - Protection Installation
  • —Cabling of new CB to existing marshalling kiosk  - Protection Installation
  • —Installation of new Busbars and stranded connections  - Protection Installation
  • —Installation of all post insulators and earthing - Protection Installation
  • —Schematics and wiring diagrams supplied free issue by - Mitsubishi/SWA
  • —Site supervision supplied by - Protection Installation
  • —End User - National Grid
  • —Delivery period  - 6 Weeks