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

Related Products

• All Marine Data Navigation Equipment requiring a safeguarded 24 V dc supply