Thornycroft TRGT-40 39kVA Three Phase Marine Generator Set

Description

Sustain commercial vessel three-phase balance using the Thornycroft TRGT-40 Three Phase Generator Set. Displacing 3.8 liters across four turbocharged cylinders, this high-output marine diesel auxiliary engine outputs 31.2 kW continuous three-phase power with 39.0 kVA peak capacity at 1,500 RPM. Complete freshwater heat exchanger cooling isolates raw sea water from engine water jackets, sustaining industrial refrigeration plants and high-pressure deck machinery.

A turbocharged cast iron four-cylinder block provides structural stiffness under high continuous combustion boost pressures. The internal rotating group incorporates a forged alloy steel crankshaft, reinforced forged connecting rods, and oil-cooled aluminum pistons. Engine geometry presents a 100 mm bore, 120 mm stroke, 17.5:1 compression ratio, 12.0-quart oil capacity, and total dry weight of 1,220 lbs. Splayed main bearing caps reinforce lower case rigidity under heavy loads.

Key Features of Thornycroft TRGT-40

Commercial mariners buy Thornycroft TRGT-40 generator packages to deliver balanced three-phase auxiliary current across offshore trawlers and workboats. This 50 Hz power unit outputs balanced 400-volt alternating current to eliminate phase imbalances across heavy machinery spaces.

• 31.2 kW continuous 400-volt three-phase output supports heavy induction motor starts without voltage sag.
• Water-cooled turbocharger boosts low-end torque reserves to manage sudden electrical motor startup spikes.
• Four-pole brushless alternator design uses solid-state regulation to hold line voltage variation within one percent.
• TRGT-40 marine generator digital controller tracks oil pressure, water temperature, AC frequency, and runtime.
• Cupronickel tube-and-shell heat exchanger prevents raw seawater from entering inner cast iron engine cooling channels.
• Single-side maintenance face organizes oil filters, fuel filters, and zinc plugs behind one fast latching door.
• Water-cooled cast iron exhaust elbow isolates extreme exhaust heat from composite yacht bulkheads.

Three Phase Alternator Load Performance

Operating at an exact 1,500 RPM governing point, this four-stroke diesel maintains steady 50 Hz current standards. Full electrical output yields 31.2 kW (39.0 kVA at 0.8 power factor) across 400-volt lines. Measured fuel burn records 2.10 gallons per hour at half load and 3.85 gallons per hour at full continuous rating. The pressurized lubrication circuit maintains 40 to 65 PSI hot oil pressure, shielding critical crankshaft journals.

Engine Bed Machinery Clearances

Outer dimensions measure 1,450 mm long, 740 mm wide, and 850 mm high on its heavy structural steel skid. Four captive marine mounts detach engine harmonics from stringer frames. The 3-inch wet exhaust fitting requires direct fall to waterlock silencers, and side panels require six inches of technician working room.

Scheduled Marine Service Rules

Operate the fuel feed priming arm to evacuate air from diesel filter bowls before initial engine start. Maintain full expansion bottle coolant levels to prevent dry heat cycles. This marine unit is not engineered for raw sea water block cooling, open deck installations, or unvented gasoline holds.

• Extract factory run-in oil and renew full-flow filter elements after the initial 50 hours of operation.
• Check raw water pump impeller flexibility and clean fuel separator bowls every 200 running hours.
• Descale heat exchanger core tubes and thread in fresh zinc protection plugs every 12 months.

Commercial Warranty Freight Manifest

Thornycroft covers this equipment with a 24-Month / 2,000-Hour commercial marine manufacturer warranty. The wooden shipping pallet contains the complete generator package, open skid base, digital remote station, flexible fuel line kit, factory load bank test report, and operator service documentation binder.