Crew Area Under crew stairs for lower deck Wheel house Machinery SpaceSeparate distribution panels are provided for AC and24V DC circuits. Each outgoing circuit from a panel is protected by a circuit breaker. Spare circuits are provided in each panel. CATHODIC PROTECTION Zinc anodes are fitted adjacent to all metallic underwater fittings, and a comprehensive bonding system is installed to ensure that the greatest possible efficiency of cathodic protection is obtained.All earth connections are connected to a bronzeearth plate 300mm x 900mm on the under side of the hull.24V DC SUPPLY & DISTRIBUTION24 Volt DC power supplies are distributed using a grounded negative system.Batteries are of the low maintenance Lead Acid typewhere installed in the engine room. For other areas, batteries are of the sealed AGM type. MAIN SWITCHING & DISTRIBUTION Cross connect/disconnect facilities are provided to enable starting of either engine in the event of failure of an auxiliary battery.The domestic services battery supports all 24V DCsystems throughout the vessel other thanengine/generator start, emergency andcommunications systems. CHARGING A charging alternator is fitted to each main generator. These alternators are used to supply charge to the associated starter battery. Multiple 24V battery chargers are installed. Theseare arranged so that each battery bank has sufficient charging to maintain the batteries at their optimum capacity. Where additional equipment is specified extra chargers may be required to support the increased DC load.

Sunseeker 34 Metre Yacht

POWER MANAGEMENT SYSTEM AC Power is fed into a power management system that protects and manages the available power supplies and distributes power to sub-distribution boards throughout the boat.Appropriate panel instrumentation is provided topermit local monitoring and in the event of an emergency, manual control of the system.Two distribution sections are provided, each directlyfed by one generator. Under normal operating conditions one generator is nominated as the duty set and this machine will supply the entire boatload. The second generator is designated as the stand-by set.Switching between duty and stand-by generatorsfully automated by the system, which seamlessly connects the stand-by machine and shares the load during peak demand. Manual operation is possible by any of the system touch screens.When a shore power connection is available,switching between generator and shore power will be ‘seamless’ i.e. there will be no interruption of AC power. SHORE SUPPLY SYSTEM Where it is anticipated that the boat will operate only in an area where a single shore power supply standard applies, an isolation transformer will be installed. This ensures total galvanic isolation between the shore power system and the vessel.Where it is intended that the boat will operate inareas where different shore power standards may be encountered it is recommended that an optional shore power converter be installed.For boats with European standard power supplies,one 3 phase 100A power inlet (capable of passing a total power in excess of 60kW @ 400V) is recommended for family cruising use. For boats with US standard power supplies it isrecommended that two inlets, each of 100A (each capable of passing a total power in excess of 35kW @ 208V) be positioned.All inlets to be provided with Glendinning CableMaster. Cable length to be 20m as standard. Cable to remain flexible at temperatures down to 10° C. POWER DISTRIBUTION The final circuits in the boat are protected by residual current circuit breakers (GFCI or RCCB) and by over-current circuit breakers. Sub distribution boards are proposed as follows:
www.sunseeker.comPAGE 12