DG500 Gas Generator Sets

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Frequency60 Hz
Natural Gas Rating500 ekW
Emissions/Fuel StrategyU.S. EPA Certified for Stationary Emergency and Non-Emergency Application
Caterpillar is leading the power generation marketplace with Power Solutions engineered to deliver unmatched flexibility, expandability, reliability, and cost-effectiveness.


Frequency60 Hz
Natural Gas Rating500 ekW
Emissions/Fuel StrategyU.S. EPA Certified for Stationary Emergency and Non-Emergency Application
Fuel TypeNatural Gas
Voltage208 - 600 VAC
Engine ModelCat® CG18 In-line 6, 4-cycle Natural Gas
Fuel SystemGas mixer, Venturi
AspirationTurbocharged - Air-to-Air Aftercooled
Governor TypeElectronic
Displacement1106.3 in³ (18.1 l)
Compression Ratio10.5:1
Bore5.7 in (145 mm)
Stroke7.2 in (183 mm)
Length154 in (3581 mm)
Width73 in (1854 mm)
Height82 in (2083 mm)
Weight10721 lb (4863 kg)

Benefits and Features

  • Certified EPA Stationary Emergency
  • Complies with emission standards required for local permits

  • Robust high speed block design provides prolonged life and lower owning operationg costs
  • Designed for maximum performance on low pressure pipeline natural gas
  • Leading edge technology in ignition system and air/fuel ratio control for lower emission and engine efficiency
  • One electronic control module handles all engine functions: ignition, governing, air/fuel ratio control and engine protection

  • Class H Insulation. Highest classification ensures alternator durability
    • Matched to the performance and output characteristics of Cat gas engines
    • Industry leading mechanical and electrical design
    • Industry leading motor starting capabilities
    • High Efficiency

  • User-friendly interface and navigation
  • Scalable system to meet a wide range of installation requirement
  • Expansion modules and site-specific programming for specific customer requirements

  • Designed to operate in standard ambient temperatures up to 43°C (110°F)
  • Contact your Cat Dealer for specific ambient and altitude capabilities

  • Wide range of bolt-on system expansion attachmentsr
  • Factory designed and tested
  • Flexible packaging options for easy and cost effective installation

  • Compact in-line design allows for improved packaging, resulting in the smallest genset footprint

Standard Equipment

  • Dry exhaust manifolds, insulated and shielded
  • Gas train with Zero Pressure regulator
  • ECU controlled shutdown solenoid
  • Airfuel Ratio Control, Venturi type Air-Gas mixer, throttle controlled valve
  • EMCP 4.2B
  • Integrated Voltage Regulator (IVR)
  • PL444 Product link 4G LTE Telematics
  • Anti-condensation space heater
  • SR5
  • Electronic Governing
  • 24V starting motors
  • Paint - Caterpillar Yellow except rails are gloss black
  • Operation and maintenance manuals
  • Parts book

Optional Equipment

  • Air inlet adapters
  • Inlet/Outlet connections
  • Flexible fitting
  • Elbow, Flange
  • Muffler and spark-arresting muffler with companion flanges
  • Exhaust expander
  • PLG 601 & 641 Product link Telematics
  • Permanent Mangnet Excitation
  • Low voltage extension box
  • Generator air filter
  • European bus bar
  • Cable access box
  • Sound Attenuated and Weather Protective
  • Jacket water heater
  • Space Heaters
  • Charging alternator
  • Battery with cable and rack (shipped loose)
  • Battery charger
  • Oversized battery
  • Engine barring group
  • EEC D.O.I and other certifications
  • Crankcase explosion relief valve