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Producing reliable power from 180 ekW to 300 ekW at 60Hz, our C9 ACERT™ diesel generator sets are made to meet your standby and prime applications. Each is designed to meet ISO 8528-5 transient response requirements and accept 100 percent rated load in one step. All C9 generator sets are engineered to EPA Stationary Emergency (Tier 3) emissions standards — it’s how we’re helping protect and power the world you live in. Seismic certification is also available to maintain power during unexpected disturbances. Our integrated control system, including Cat® UPS, ATS and switchgear, ensures a consistent power supply and connection to your fleet through on-site and remote monitoring options. The EMCP 4 control panel, with a user-friendly interface, puts our management and diagnostic tools in one. We offer a wide range of accessories and bolt-on system expansion attachments so you can adapt your generator sets to your needs. Find flexible packaging options to work with your spatial requirements and environmental conditions. Even select from UL 2200 and CSA certified package options for added safety. Tailor your C9 generator sets to take on today’s power needs — and tomorrow’s.

Generator Set Specifications

Minimum Rating 168 ekW (210 kVA) 168 ekW (210 kVA) Less
Maximum Rating 184 ekW (230 kVA) 184 ekW (230 kVA) Less
Voltage 220-480 Volts 220-480 Volts Less
Frequency 50 or 60 Hz 50 or 60 Hz Less
Speed 1500 or 1800 RPM 1500 or 1800 RPM Less

Generator Set Configurations

Emissions/Fuel Strategy EU Stage IIIA, Low Fuel Consumption, U.S. EPA Certified for Stationary Emergency Use only ( Tier 3 Nonroad Equivalent Emission Standards) EU Stage IIIA, Low Fuel Consumption, U.S. EPA Certified for Stationary Emergency Use only ( Tier 3 Nonroad Equivalent Emission Standards) Less

Engine Specifications

Engine Model C9 ATAAC, I-6, 4-Stroke Water-Cooled Diesel C9 ATAAC, I-6, 4-Stroke Water-Cooled Diesel Less
Compression Ratio 16.1:1 16.1:1 Less
Aspiration Air to Air Aftercooled Air to Air Aftercooled Less
Governor Type Adem™A4 Adem™A4 Less
Fuel System Hydraulic electronic unit injection Hydraulic electronic unit injection Less
Bore 4.41 in 112.0 mm Less
Displacement 537.01 in³ 8.8 L Less
Stroke 5.87 in 149.0 mm Less

Cat Generator Set Packages

Cat® generator set packages have been fully prototype tested, and certified torsional vibration analysis reports are available. The packages are designed to meet the NFPA 110 requirement for loading, and conform to the ISO 8528-5 steady state and transient response requirements.

Cat Diesel Engines

The four cycle Cat diesel engine combines consistent performance with excellent fuel economy and transient response that meets or exceeds ISO 8528-5. The engines have been designed and built for a wide range of applications and can be optimized for low fuel consumption or low emissions. The engines feature a reliable, rugged, and durable design that has been field proven in thousands of applications worldwide from emergency standby installations to continuously operating power plants.

Cooling System

The cooling system has been designed to operate in standard ambient temperatures up to 50°C (122°F) with an air flow restriction of 0.5 in water. The factory installed cooling system has been designed and tested to ensure proper generator set cooling, and includes the radiator, fan, belts, and all guarding installed as standard. Contact your Cat Dealer for specific ambient and altitude capabilities.


The generators used on Cat packages have been designed and tested to work with the Cat engine. The generators are built with robust Class H insulation and provide industry leading motor starting capability. They provide high efficiency in a majority of applications and optional coastal protection for the windings is available for harsh environments.

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.

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.

C9 Optional Equipment

Engine Options
  • Air Cleaner: [ ] Single element air cleaners [ ] Dual element air cleaner [ ] Heavy duty air cleaner
  • Muffler: [ ] Industrial Grade [ ] Residential Grade [ ] Critical Grade
  • Batteries: [ ] Standard [ ] Heavy Duty
  • Starting Motors: [ ] Standard [ ] Heavy Duty
  • Battery Charger: [ ]
  • Starting Aids: [ ] Jacket Water Heater

Control System
  • Controller: [ ] EMCP 4.1 [ ] EMCP 4.2 [ ] EMCP 4.3 [ ] EMCP 4.4
  • Local annunciator module: [ ] NFPA 110
  • Remote annunciator module: [ ] NFPA 110
  • Additional Options: [ ] Expansion I/O module [ ] Remote monitoring software

  • Excitation: [ ] Permanent Magnet Excited (PM) [ ] Internally Excited (IE)
  • [ ] Anti-condensation heater
  • [ ] Oversize generator
  • [ ] Coastal protection

Power Termination
  • [ ] Bus Bar [ ] Circuit Breaker, IEC compliant [ ] Circuit Breaker, UL Listed

  • [ ] Seismic Certification per applicable building codes: IBC 2000, IBC 2003, IBC 2006, IBC 2009, CBC 2007
  • [ ] Pre-approved by OSHPD and carries an OSP-0321-10 for use in healthcare projects in California
  • [ ] UL 2200 package
  • [ ] EU Certificate of Conformance (CE)
  • [ ] CSA Certification
  • [ ] EEC Declaration of Conformity
  • Skid Base [ ] Narrow [ ] Wide
  • Enclosures [ ] Sound attenuated [ ] weather protective [ ] high ambient weather protective
  • Fuel Tanks [ ] Single wall integral [ ] Dual wall integral [ ] Single wall sub-base [ ] Dual wall sub-base
  • [ ] Automatic transfer switches (ATS)

Extended Service Contract (ESC)
  • Extended Service Contract (ESC): [ ] 2 Year [ ] 3 Year [ ] 4 Year [ ] 5 Year

Note: Option availability is regional dependent, see your Dealer for details.

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