D550 GC (60 Hz) Generator Set
D550 GC (60 Hz) Generator Set
D550 GC (60 Hz) Generator Set
D550 GC (60 Hz) Generator Set

The D550 GC diesel generator sets were developed to meet your needs in a standby application. Producing reliable power of 550 ekW at 60 Hz, meeting ISO 8528-5 transient response requirements and built to accept 100 percent rated load in one step. Our D550 GC generator sets meet EPA Stationary Emergency (Tier 2) certified emissions requirements.

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Minimum Rating 550 ekW
Maximum Rating 550 ekW
Emissions/Fuel Strategy EPA Stationary Emergency
Voltage 480 to 600 Volts
Frequency 60 Hz
Speed 1800 rpm
Duty Cycle Standby
Engine Model Cat® C18 In-line 6, 4-cycle diesel
Bore 5.7 in
Stroke 7.2 in
Displacement 1106 in³
Compression Ratio 14.5:1
Aspiration Turbocharged Air-to-Air Aftercooled
Fuel System MEUI
Governor Type ADEM™A4
Length - Maximum 196.1 in
Width - Maximum 73.4 in
Height - Minimum 79.1 in
Height - Maximum 100.9 in
Dry Weight - Genset (minimum) 8776.6 lb
Dry Weight - Genset (maximum) 11464 lb

  • Cat generator set packages have been fully prototype tested
  • Accepts 100% block load in one step and meets NFPA 110 loading requirements
  • Conform to ISO 8528-5 steady state and transient response requirements

  • 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

  • Superior motor starting capability minimizes need for oversizing alternator
  • Designed to match performance and output characteristics of Cat diesel engines
  • Robust Class H insulation

  • 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 to104°F (40°C)
  • Contact your Cat Dealer for specific ambient and altitude capabilities

  • UL 2200 Listed
  • ULC Certification Available

  • Components used in the generator set are selected based on seamless design integration to provide the optimum performance
  • The generator set is fully assembled at a Caterpillar facility following our quality guidelines
  • Each generator set package is tested before leaving the Caterpillar facility
  • Cat product support, including dealer service, parts and warranty covers the entire Cat power system

  • Cat dealers have over 1,800 dealer branch stores operating in 200 countries
  • Your local Cat dealer provides extensive post-sale support, including maintenance and repair agreements