10_69-HSCL_320_001_0 Electrical Block Diagram.pdf

This is an electrical block diagram for the 69 FT Homeland Security Cutter Light (HSCL) vessel operated by the United States Coast Guard. The diagram illustrates the power distribution and electrical system architecture for the ship, originating from the Deputy Commandant for Systems office.

The diagram depicts a hierarchical power distribution network beginning with a power transfer panel that feeds two main gensets (GEN #1 and GEN #2), each operating at 240VAC, 3PH, 60HZ. Power flows through distribution panels to supply two Uninterruptible Power Systems (UPS 1 and UPS 2), which provide 240VAC distribution. The system includes a main 120VAC distribution panel served by the primary distribution load center, with multiple 120VAC Distribution Panels (numbered 1 through 4) connected downstream. A separate 240VAC/60HZ distribution system is also shown with associated distribution panels. The diagram notes that the electrical design is intended to support ship operations and provide redundancy through multiple distribution paths. The document includes standard revision notation, sheet identification information, and applicability references in the margins, with the Coast Guard seal and official designation displayed in the lower right corner.