MARINE
DIESEL
GENERATOR
7.6BTD60Hz
5.7BTD50Hz
Features, Standard Equipment, Optional EquipmentSpecifications, Performance, ConstructionInstallation Dimensions
Generator Design
  • DESIGN: Brushless, four pole, revolving, power takeoff.
  • VOLTAGE REGULATION: Standard ± 5% no load to full load.
  • FREQUENCY REGULATION: 3 Hz (5%) no load to full load.
  • INSULATION: Class "F", as defined by NEMA MG1-1.65.
  • TEMPERATURE RISE: Within NEMA MG1-22.40 definition when operating at full load.
  • COOLING: Cast centrifugal blower, direct connected.
  • ELECTROMAGNETIC INTERFERENCE LEVEL: Exceeds requirements for most marine radio-telephones and standard TVs.
Model Electrical Characteristics Ratings Engine
Volts Amps Hertz Phase Wire Power Factor kW RPM Start
7.6 BTD-614* 120/240 63.3/31.6 60 1 4 1.0 7.6 1800 Remote
5.7 BTD-514* 230 24.8 50 1 4 1.0 5.7 1500 Remote

* Adjustable for 50 or 60 hertz.

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Specifications
Number of cylinders 3 Cylinder vertical in-line Starting aid 12 volt sheathed type glow plug
Type 4 Cycle Full load fuel consumption 0.53 US GPH (2 LPH) (approx.)
Displacement 58.09 cu. in. (.952 litre) Fuel injection pump Bosch type, with solenoid shutoff
Bore and stroke 2.99" x 2 76"
(75.9mm x 70mm)		 Governor Centrifugal type
Compression ratio 23:1 Injectors Throttle type
Rated rpm 60 Hz – 1800 rpm
50 Hz – 1500 rpm		 Fuel Filter Secondary, replaceable type
HP @ 1800 rpm 11HP Lube oil filter Full flow, spin-on element
Maximum angle of operation Not to exceed 25° in all directions Lubricant capacity 3.8 US quarts (3.6 litre)
Exhaust elbow conn. 2" OD (50.8mm) Fuel transfer pump 12 volt electric type
Sea water conn. 1" OD (25.4mm) Fuel supply and return piping 1/4" ID (6.35 mm) min.
3/8" ID (9.52 mm) max.
Dry weight 395 lbs (197 kg) Starting motor 12 volt. solenoid. actuated shift
Combustion system Swirl type Alternator 51 amps
Aspiration Naturally aspirated Cold cranking amps 190 amps
Lubrication system Forced lubrication by gear pump Electrical system 12 volts DC, negative ground
Cooling system 4 US quarts (3.78 litre)    

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Construction
Cylinder head Cast Iron
Cylinder block Cast Iron
Crankshaft Forged crankshaft, four main bearings
Valves Overhead valves, rotating type
Fuel System Self bleeding
Intake system Tuned intake silencer for maximum noise reduction
Cooling system Fresh water-cooled with heat exchanger
Exhaust manifold Cast aluminum, fresh water-cooled