Ship power supply unit MD81/24

The MD81/24 is a power supply unit which operates from a ship’s 110 V / 220 V ac 50 / 60 Hz single phase supply and provides a 24 V dc output. The MD81/24 can also be factory configured to provide ‘S’ Type 35 V, 50 V or 70 V dc outputs for legacy equipment (option). The power supply unit has an automatic changeover facility to switch to the ship’s backup (standby) 24 V dc supply in the event of a main power supply failure. It incorporates a power failure alarm circuit which meets IMO recommendations. Power failure is indicated visually on the front of the enclosure and a relay contact is provided to activate an external alarm system if required. Constructed in a robust die-cast aluminium enclosure and finished in RAL9005 Jet Black fine texture paint, the MD81/24 is designed to complement existing marine navigation equipment. The MD81/24 is supplied with fixing centres for bulkhead mounting. Compact and rugged, the MD81/24 offers a power supply solution for locations where space is limited. The MD81/24 Power Supply from Marine Data: flexible in application, easy to install and simple to maintain. Special Features Linear power supply with low EMC emissions and high immunity High surge current capability Automatic changeover to backup (standby) dc supply in the event of main ac power failure All dc outputs are rectified The main and backup (standby) power supply inputs can be isolated All inputs and outputs are fuse protected Applications The MD81 is suitable for supplying 24 V dc to ships navigation equipment where security of supply requires the automatic changeover to a backup dc supply in the event of a main ac power failure