Generator Design
DESIGN: Brushless, two pole, revolving field. TEMPERATURE RISE: Within NEMAMG1-22.40 definition when
VOLTAGE REGULATION: Standard +/- 5% no load to full load. operating at full load.
FREQUENCY REGULATION: 3 Hz (5%) no load to full load. COOLING: Cast centrifugal blower, direct connected.
INSULATION: Class “H”, as defined by NEMA MG1-1.65. ELECTROMAGNETIC INTERFERENCE LEVEL: Meets EMC directive
89/336/EEC, amended by 92/31/EEC and 93/68/EEC.
4.5 BCGTC60Hz
3.75 BCGTC50Hz
Number of cylinders 3 Cylinder vertical in-line
Type 4 cycle
Displacement 40.3 cu. in. (.66 liter)
Bore and stroke 2.56” x 2.61” (65.0mm x 66.3 mm)
Compression ratio 9.8:1
Rated rpm 60 Hz – 3600 rpm
50 Hz – 3000 rpm
HP @ 3600 rpm 7.54 HP
Maximum angle of operation Not to exceed 25° in all directions
Exhaust elbow conn. 2.0” OD (50.8mm)
Sea water conn. 0.75” OD (19.05mm)
Dry weight 280 lbs (127 kg)
Combustion system Semi-spherical type
Aspiration Naturally aspirated
Lubrication system Forced pump
Cooling system 3.5 quarts (3.4 liter)
Full load fuel consumption 0.859 GPH (2.86 LPH) (approx.)
Carburetor Down draft type
Governor Mechanical
Lube oil filter Full flow, spin on element
Lubricant capacity 2.7 quarts (2.6 liters)
Fuel transfer pump Electric type
Fuel supply piping 1/4” ID (6.35mm)
Starting motor 12 volt, 1.2 kw
Battery charging 17 amps, integral electric type
Cold cranking amps 120 amps @ 70 degrees F
Electrical system 12 volts DC, negative ground
Remote start-stop panel
Ship-shore switch
Hydro-hush muffler and fittings
“A” on-board spare parts kits; “B” extended cruising spare parts kit
Anti-siphon valve for overboard cooling water discharge
Technical Manual
Sound Guard sound enclosure
Electrical Characteristics Ratings Engine
Model Volts Amps Hertz Phase Wire
Power Factor
KW RPM Start
4.5 BCGTC* 120 37.5 60 1 4 1.0 4.5 3600 Remote
* Adjustable for 50 or 60 hertz.
3.75 BCGTC* 230 16.3 50 1 4 1.0 3.75 3000 Remote
WESTERBEKE CORP., AVON INDUSTRIAL PARK, AVON, MA 02322, U.S.A. • TELEPHONE : (508) 588-7700 • FAX: (508) 559-9323 • Website: www.westerbeke.com
Specifications Subject to Change without Notice.
DPS 3M 10/99
Cylinder head Aluminum
Cylinder block Cast Iron
Crankshaft Forged crankshaft, four main bearings
Valves Overhead, rotating type
Fuel System Carbureted w/U.S.C.G. approved flame arrestor
Cooling system Fresh water-cooled with heat exchanger
Exhaust manifold Cast aluminum, fresh water-cooled
inches
(millimeters)
Construction – Engine ComponentsSpecifications
Drawings are for reference only and should not be used for installation. Detailed installation drawings are available upon request.
Optional Equipment
Basic Dimensions
VIEW A
VIEW A