DG500 (3-Phase)

  • Exterior View
  • Interior View

DG500 (3-Phase)

Natural Gas Rating 500 ekW
Fuel Type Natural Gas
Emissions/Fuel Strategy U.S. EPA Certified for Stationary Emergency and Non-Emergency Application
RPM 1,800
Frequency 60 Hz
Voltage 208 - 600 VAC
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Generator Set Specifications
Natural Gas Rating 500 ekW
Fuel Type Natural Gas
Emissions/Fuel Strategy U.S. EPA Certified for Stationary Emergency and Non-Emergency Application
RPM 1,800
Frequency 60 Hz
Voltage 208 - 600 VAC
Engine Specifications
Engine Model Cat® CG18 In-line 6, 4-cycle Natural Gas
Fuel System Gas mixer, Venturi
Aspiration Turbocharged - Air-to-Air Aftercooled
Governor Type Electronic
Displacement 1,106 in³
Compression Ratio 10.5:1
Bore 6 in
Stroke 7 in
Generator Set Dimensions
Length 154 in
Width 73 in
Height 82 in
Weight 10,721 lb

C18-based engine architecture

The CG18 shares approximately 90% of its engine hardware with the Cat C18 diesel platform, bringing proven components to a natural gas configuration.

Efficient lean-burn operation

A lean air-fuel ratio promotes fuel efficiency, while lower exhaust temperatures help reduce thermal stress on engine components.

Simplified engine design

An in-line six-engine layout uses fewer parts than comparable V10 and V12 configurations, simplifying maintenance and supporting reliable operation.

Strong motor-starting ability

Up to 1414 skVA at 30% voltage dip provides the capability to start large, connected motors during an outage.

Flexible system expansion

Bolt-on attachments provide options for expanding the system as operating needs change.

  • Exhaust
    • Dry exhaust manifolds, insulated and shielded
  • Fuel System
    • Gas train with Zero Pressure regulator
    • ECU controlled shutdown solenoid
    • Airfuel Ratio Control, Venturi type Air-Gas mixer, throttle controlled valve
  • Controls
    • CAT® ECS 100
    • Integrated Voltage Regulator (IVR)
  • Telematics
    • PL444 Product link 4G LTE Telematics
  • Generator
    • Anti-condensation space heater
    • SR5
  • Governing
    • Electronic Governing
  • Starting/charging
    • 24V starting motors
  • General
    • Paint - Caterpillar Yellow except rails are gloss black
    • Operation and maintenance manuals
    • Parts book
  • Air Inler
    • Air inlet adapters
  • Control Panel
    • CAT® ECS 200
  • Cooling
    • Inlet/Outlet connections
  • Exhaust
    • Flexible fitting
    • Elbow, Flange
    • Muffler and spark-arresting muffler with companion flanges
    • Exhaust expander
  • Generator
    • Permanent Mangnet Excitation
    • Low voltage extension box
    • Cable access box
  • Enclocures
    • Sound Attenuated and Weather Protective
  • Starting/charging
    • Jacket water heater
    • Space Heaters
    • Charging alternator
    • Battery with cable and rack (shipped loose)
    • Battery charger
    • Oversized battery
  • General
    • Engine barring group
    • Crankcase explosion relief valve
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