Caterpillar G3304 Generator Set

(Natural Gas Generator)

General

• Manufacturer: Caterpillar

• Engine Model: G3304

• Generator Type: Natural gas genset

• Engine Type: Inline 4-cylinder, 4-stroke

• Fuel Type: Natural Gas (field gas capable with proper setup)

• Aspiration: Naturally aspirated

• Duty Rating: Continuous / prime power

• Application: Industrial / oilfield / standby / prime power

Electrical Output

(Ratings vary by speed and frequency)

60 Hz Configuration

• Rated Power: 60 – 100 kW

• Voltage: 480 V / 277 V (typical)

• Phase: 3-phase

• Power Factor: 0.8

• Speed: 1,800 RPM

50 Hz Configuration

• Rated Power: 50 – 80 kW

• Voltage: 400 V / 230 V (typical)

• Speed: 1,500 RPM

Engine Performance

• Rated Engine Power: 90 – 120 HP

• Governor: Mechanical or electronic (Woodward typical)

• Fuel Consumption: ~0.30–0.34 lb/hp-hr (typical)

Engine Specifications

• Configuration: Inline 4

• Displacement: 425 in³ (7.0 L)

• Bore: 4.75 in (121 mm)

• Stroke: 5.00 in (127 mm)

• Compression Ratio: ~10.5:1 (gas)

• Rotation: Counterclockwise (flywheel end)