FG Wilson P55-3 Diesel Generator Set – Perkins Engine + Leroy Somer Alternator

The FG Wilson P55-3 diesel generator set is designed to deliver dependable power output for commercial and industrial applications. Manufactured in Larne, Northern Ireland, this unit offers prime power of 50 kVA (40 kW) and standby power of 55 kVA (44 kW) at 400/230V and 50 Hz. It is powered by the Perkins 1104A-44TG2 turbocharged 4-cylinder engine with direct injection, delivering excellent performance and fuel efficiency. The set includes a brushless, self-excited Leroy Somer alternator (or Marelli, depending on configuration) with ±1% voltage regulation and IP23 protection. The system is managed by FG Wilson’s PowerWizard 1.1 or 2.1 control module, providing full monitoring, diagnostics, and remote control options.

Specifications:

– Manufacturer: FG Wilson (Caterpillar NI Ltd.)
– Model: P55-3
– Prime Power: 50 kVA / 40 kW
– Standby Power: 55 kVA / 44 kW
– Voltage: 400/230V, 3-phase, 50 Hz
– Power Factor: 0.8 (lagging)
– Frequency: 50 Hz
– Speed: 1500 RPM
– Country of Origin: Larne, Northern Ireland, UK
– Engine Brand: Perkins
– Engine Model: 1104A-44TG2
– Engine Type: 4-cylinder, 4-stroke, turbocharged, water-cooled
– Displacement: 4.4 litres
– Bore x Stroke: 105 mm × 127 mm
– Compression Ratio: 17.25:1
– Fuel System: Direct injection
– Fuel Consumption (@75% load): ~10.2 L/h
– Starting System: 12V electric
– Charging Alternator: 45 Amp, 12V
– Fuel Tank Capacity: ~100–150 litres
– Governor Type: Mechanical
– Alternator Brand: Leroy Somer / Marelli
– Alternator Type: Brushless, self-excited
– Voltage Regulation: ±1% with AVR
– AVR Model: R220 / DSR
– Winding Pitch: 2/3
– Poles: 4
– Insulation Class: H
– Temperature Rise: Class H
– Protection Class: IP23
– THD: < 3% (linear loads)
– Control Panel: FG Wilson PowerWizard 1.1 / 2.1
– Display: LCD with manual/auto/remote start, alarms, diagnostics
– Dimensions (L × W × H): Varies by canopy (~2.2m × 1m × 1.5m typical)
– Weight (Dry): ~1000–1200 kg (approximate, varies by configuration)

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