DG250 GC (3 phase)

DG250-2 (3 phase)

The Cat® spark-ignited generator product line for stationary applications feature permanent magnet excitation, amortisseur winding, skewed stator, voltage adjustment through the EMCP controller, Class H winding insulation and 2/3 pitch incorporated.



  • Four-stroke-cycle gas 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.

Design Criteria

  • The generator set facilitates compliance with NFPA 110 and meets ISO 8528-5 requirements for transient response
  • Cooling system designed to operate in 50˚C/122˚F ambient temperatures with an air flow restriction of 0.5 in. water

UL 2200 / CSA - Optional

  • UL 2200 listed packages
  • CSA Certified
  • Certain restrictions may apply.
  • Consult with your Cat® Dealer.

Worldwide 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.

Standard Equipment

  • Factory-installed radiator
  • Closed coolant recovery system
  • 50/50 Ethylene glycol antifreeze
  • Standard ambient temperatures up to 50°C (122°F)
  • Radiator and cooling fan complete with protective guards
Air Inlet
  • Single element air filter
  • Low fuel pressure switch
  • Fuel pressure test po
  • Primary and secondary fuel shut-off
  • Dual lock off valves
  • NPT connection
  • Natural Gas or LP Vapor
  • Class H insulation material
  • Full load capacity alternator
  • Permanent magnet excitation
  • Full load capacity alternator
  • Permanent magnet excitation
  • Matched to the performance and output characteristics of Cat engines
  • Integrated Voltage Regulator
  • Class H insulation material
  • IP23 Protection
  • Exhaust outlet with 3” pipe
  • EMCP 4.2 Series generator set controller
  • Vibration isolaton (puck type)
  • Rubber vibration isolators
Electric Starting and/or Prelube
  • Solenoid activated starter motor
  • Engine electrical system
  • Battery cables
  • Solenoid activated starter motor
Electric Power - Package Serial Number Prefix
  • Battery charging alternator
  • Electronic governor (non adjustable)
Control Panel
  • EMCP 4.2 Series generator set controller
  • 12 volt starting motor
  • Batteries with rack and cables

Additional information

Offering Type

Generator Set Specifications - Frequency

60 Hz

Generator Set Specifications - Natural Gas Rating

250 eKW

Generator Set Specifications - Emissions/Fuel Strategy

U.S. EPA Certified for Non-Emergency Application

Generator Set Specifications - Displacement

14.2 l ( 864.7 in³ )

Engine Specifications - Fuel System

Carbureter, Down Draft

Generator Set Specifications - Speed

1800 rpm

Engine Specifications - Aspiration

Turbocharged – Aftercooled

Engine Specifications - Compression Ratio


Engine Specifications - Bore

135 mm ( 5.31 in )

Engine Specifications - Stroke

165 mm ( 6.5 in )

Generator Set Dimensions - Length

3524.1 mm ( 138.74 in )

Generator Set Dimensions - Width

1463.1 mm ( 57.6 in )

Generator Set Dimensions - Height

1728.3 mm ( 68.04 in )

Generator Set Dimensions - Weight

2887 kg ( 6364 lb )

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