10_69-HSCL_320_001_0 Electrical Block Diagram.pdf

This is an electrical block diagram for the 69-foot Homeland Security Cutter Light (HSCL) prepared by the Office of Naval Engineering under the United States Coast Guard Deputy Commandant for Systems. The diagram illustrates the vessel's electrical power distribution architecture and system configuration.

The schematic depicts a distributed electrical system with multiple distribution panels and power management components. The system includes a power transfer panel/board connected to dual generator sets (GEN #1 and GEN #2), each rated at 65kW, 240VAC, three-phase, 60Hz. Power flows through a 240VAC distribution load center to supply multiple distribution substations and uninterruptible power supply (UPS) units. The diagram shows 240VAC distribution to two UPS units (UPS 1 and UPS 2), with secondary distribution to four separate 120VAC distribution panels throughout the vessel. Additional 240VAC/120VAC distribution panels with 3-phase, 60Hz ratings are integrated into the system. The electrical architecture supports both critical loads through UPS backup power and standard vessel operations through the main distribution network. The document includes revision status and applicability information, indicating this is a technical specification document for the HSCL electrical system design and installation.