US COAST GUARD 400 HERTZ POWER SUPPLY SYSTEM INSTALLATION

  • 400-HERTZ-POWER1
  • 400-HERTZ-POWER2
  • Client: US. Coast Guard
  • Location: McKinleyville, CA and North Bend, OR
  • Date: 2012
  • Contract #: HSCG88-10-D-PQQ012
  • Value: $547,312

Cerrudo Services installed a 90 KVA solid state converter at Air Station Humboldt Bay, and upgraded the 400 Hz conduits and wiring at Air Station North Bend.

At Humboldt Bay, the existing 400 Hz hangar distribution system consists of one floor mounted, 15 KVA three phase solid state converter.  It supplies 400 Hz power to three cable reels inside the hangar.  A portable Hobart cart provides 400 Hz power to the helicopters during periods of power outage.  Cerrudo installed a 90 KVA solid state converter, with work that included installation of two cable reels and 400 Hz output cables, construction of  metal enclosures for the reels, trenching and installation of underground conduits and wiring, and testing of the new 400 Hz system and the new 90 KVA solid state frequency converter.

At North Bend, the existing 400 Hz hangar distribution system consists of one pad mounted, 90 KVA, three phase solid state converter.  It supplies 400 Hz power to two cable reels and one wall mounted 400 Hz shoretie inside the hangar.  A portable Hobart cart provides 400 Hz power to the helicopters during periods of power outage.  Cerrudo upgraded the 400 Hz conduits and wiring of the existing cable reels, and replacing the existing 400 Hz shore tie with new cable reel and 400 Hz output cable, with work that included installation of one cable reel,400 Hz output cable, and new conduit and wiring for two existing cable reels, replacement of existing 400 Hz shoretie and wiring, trenching and installation of underground conduits and wiring, and testing and recording the existing 90 KVA solid state frequency converter output.