STN Atlas Debuts PPB System

STN Atlas Marine Electronics has introduced a new Primary Power Bus (PPB) distribution system designed for ships of all types, and conforming to major classification society standards. The system — which is operational in an introductory variant version aboard Star Cruises' Norwegian Sun — features individual switchgear together with a central control station for direct supply of generator power to all sectors of a ship. The PPB's concept is designed to supersede conventional methods of "beam type" cable connections, which otherwise inhibit pre-installation of cabling throughout individual sections of modular-designed vessels due to attendant intersections of power cables.

Individual power buses are provided for each onboard voltage system. For primary voltage systems, power sources comprise main or emergency alternators, with supply of power effected via feeder breakers and subsidiary feeder cables. High load demands, such as those associated with thrusters, chillers and shore connections, are connected to the PPB via linking busbars without use of intermediate power cables. Overall remote control and monitoring is centralized via a single console with onscreen displays or mimic diagrams of all switchgear operations. The system is designed to rationalize vessel power distribution requirements while improving operational efficiencies and installat i on downtimes. Circle 6 0 on Reader Service Card

Maritime Reporter Magazine, page 40, Dec 2000

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