MD81/24 P/SUPPLY 24VDC/AC INP.EM/C/OVER

A reliable series of power supplies for marine navigation equipment:
• Provides 24V DC power from a vessel\u0092s main AC supply.
• Recommended for the Marine Data MD76/8 Heading Monitor.
• Legacy \u0091S\u0092 type DC voltages are supported.
• Automatically switches to 24V DC backup if the main AC power supply fails.
• Alarm lamp activates if main power supply fails.
• Remote trigger for an external alarm sounder.
• Meets the IMO recommendations.
• Rugged, marinised aluminium alloy housing.

Specifications (with options)
Physical:
• Weight: Approx: 4.5kg (depending on power requirements)
• Dimensions: 185mm overall width; 246mm overall length; 132mm overall height.
• Mounting: Bulkhead mounted.
• Connections: Internal screw terminal connectors for:
• Main AC power input.
• Backup (standby) DC power input.
• DC power output.
• Trigger circuit (voltage free) for external alarm sounder.
• External earth bonding point.
• Construction: Aluminium alloy enclosure.
• Standard Colour: Jet Black RAL9005L fine textured finish.

Electrical:
• Type: Toroidal, wire-wound, multi-tap transformer.
• Trigger circuit for external alarm sounder: Closed loop (voltage free) trigger circuit rated at 3A, 24V; Normally Open (NO) and Normally Closed (NC) configurations are supported.
• Backup input power: 24V DC.
• Main AC main power (with factory-configurable options);
• (1) 110V AC 50/60Hz vessel main power input.
• (2) 230V AC 50/60Hz vessel main power input.
• Standard output power supply: 24V 4A DC out (all models)
Operational:
• Display: Illuminated lamp when main AC power supply fails.
• Indicator lamps for main AC power input and backup (standby) DC power input.

Environmental:
• Water resistance rating: IP42.
• Operating temperature: -10℃ to 70℃
• RoHS compliant.
Additional Information;
• The 24V DC output from the MD81 automatically switches to the vessel backup (standby) 24V DC supply if the vessel\u0092s main AC power supply fails.
• Legacy output supplies do not function when the power supply is operating form the vessel\u0092s backup 24V supply.
• PG11 cable glands suit cable diameters of 5-10mm.
• The legacy S-type power output options are factory configurable to individual requirements.

Manufacturer: Marine Data Sensors/Repeaters