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C18 Generator Set

Design Criteria

The generator set accepts 100% rated load in one step per NFPA 110 and meets ISO 8528-5 transient response.

Cat Diesel Engine


  • Reliable, rugged, durable design

  • Field-proven in thousands of applications worldwide

  • Four-stroke-cycle diesel engine combines consistent performance and excellent fuel economy with minimum weight



  • Matched to the performance and output characteristics of Cat engines

  • Industry leading mechanical and electrical design

  • Industry leading motor starting capabilities

  • High Efficiency

Cat EMCP Control Panel

The EMCP controller features the reliability and durability you have come to expect from your Cat equipment. EMCP4 is a scalable control platform designed to ensure reliable generator set operation, providing extensive information about power output and engine operation. EMCP4 systems can be further customized to meet your needs through programming and expansion modules.

Single-Source Supplier

Fully prototype tested with certified torsional vibration analysis available

World Wide Product Support

Cat dealers provide extensive post-sale support including maintenance and repair agreements. Cat dealers have over 1,800 dealer branch stores operating in 200 countries. The Caterpillar S•O•S℠ program cost effectively detects internal engine component condition, even the presence of unwanted fluids and combustion by-products

Seismic Certification

  • Seismic Certification available.
  • Anchoring details are site specific, and are dependent on many factors such as generator set size, weight, and concrete strength.
  • IBC Certification requires that the anchoring system used is reviewed and approved by a Professional Engineer
  • Seismic Certification per Applicable Building Codes: IBC 2000, IBC 2003, IBC 2006, IBC 2009, CBC 2007, CBC 2010
  • Pre-approved by OSHPD and carries an OSP-0321-10 for use in healthcare projects in California
  • UL 2200 / CSA
     - Optional


    • UL 2200 listed packages

    • CSA Certified

    • Certain restrictions may apply.

    • Consult with your Cat® Dealer.

    Generator Set Specifications
    Minimum Rating 500 ekW
    Maximum Rating 600 ekW
    Emissions/Fuel Strategy Low Fuel Consumption
    Voltage 220 to 380 Volts
    Frequency 60 Hz
    Speed 1800 rpm
    Duty Cycle Standby, Prime
    Engine Specifications
    Engine Model C18 ATAAC, I-6, 4-Stroke Water-Cooled Diesel
    Bore 145 mm (5.71 in)
    Stroke 183 mm (7.2 in)
    Displacement 18.1 l (1106.4 inu00b3)
    Compression Ratio 14.5:1
    Aspiration Air to Air Aftercooled
    Fuel System Electronic unit injection
    Governor Type Adem™A4
    Generator Set Dimensions
    Length - Maximum 5550 mm (218.5 in)
    Width - Maximum 2056 mm (80.9 in)
    Height - Maximum 107.8 mm (107.8 in)

    Standard Equipment

    • Air Inlet
      • Air Cleaner
    • Cooling
      • Package mounted radiator
    • Exhaust
      • Exhaust flange outlet
    • Fuel
      • Primary fuel filter with integral water separator
      • Secondary fuel filter
      • Fuel priming pump
    • Generator
      • Matched to the performance and output characteristics of Cat engines
      • Load adjustment module provides engine relief upon load impact and improves load acceptance and recovery time
      • IP23 Protection
    • Power Termination
      • Bus Bar
    • Control Panel
      • EMCP 4.2
    • Mounting
      • Rubber vibration isolators
    • Starting/Charging
      • 24 volt starting motor
      • Batteries
    • General
      • Paint – Caterpillar Yellow except rails and radiators gloss black

    Optional Equipment

    • Exhaust
      • Industrial, Residential, Critical Mufflers
    • Generator
      • Excitation: [ ] Permanent Magnet Excited (PM) [ ] Internally Excited (IE)
      • Anti-condensation heater
      • Oversize and premium generators
    • Power Termination
      • Circuit breakers, UL listed
      • Circuit breakers, IEC compliant
    • Control Panels
      • EMCP 4.4
      • Local & remote annunciator modules
      • Load share module
      • Digital I/O module
      • Remote monitoring software
    • Starting/Charging
      • Battery chargers
      • Oversize batteries
      • Jacket water heater
      • Heavy-duty starting system
      • Charging alternator
    • General
      • The following options are based on regional and product configuration:
      • Seismic Certification per applicable building codes: IBC 2000, IBC 2003, IBC 2006, IBC 2009, CBC 2007
      • UL 2200 package
      • EU Certificate of Conformance (CE)
      • CSA Certification
      • EEC Declaration of Conformity
      • Narrow, Wide or Skid Base
      • Sound attenuated, weather protective or high ambient weather protective enclosure
      • Enclosures: sound attenuated, weather protective
      • Single or dual wall integral fuel tanks
      • Single or dual wall sub-base fuel tanks
      • Integral & sub-base UL listed dual wall fuel tanks
      • Automatic transfer switches (ATS)

    Enquiry Form