C18 Generator Set

C18 Generator Set

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Caterpillar is leading the power generation marketplace with Power Solutions engineered to deliver unmatched flexibility, expandability, reliability, and cost-effectiveness.


Generator Set Specifications

Minimum Rating
455 ekW
Maximum Rating
500 ekW
Emissions/Fuel Strategy
U.S. EPA Tier 4 Final
480 Volts
60 Hz
1800 rpm
Duty Cycle
Standby, Prime

Engine Specifications

Engine Model
C18 ATAAC, I-6, 4-Stroke Water-Cooled Diesel
Compression Ratio
Air to Air Aftercooled
Fuel System
Electronic unit injection
Governor Type

Cat Generator Set Package

  • Cat generator set packages have been fully prototype tested
  • Accepts 100% block load in one step and meets other NFPA 110 loading requirements
  • Conform to ISO 8528-5 steady state and transient response requirements
  • 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
  • SR5 Alternator

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

  • 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
  • Cooling System

  • Designed to operate in standard ambient temperatures up to 55°C (131°F)
  • Contact your Cat Dealer for specific ambient and altitude capabilities
  • Certifications

    Fully prototype tested with certified torsional vibration analysis available

    One Safe Source

  • 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
  • World Wide Product Support

  • 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
  • Cat Clean Emissions Module (CEM)

  • The Tier 4 Final engine has been optimized to work with the Cat CEM.
  • The CEM is a reliable, compact, and lightweight system that gives maximum installation flexibility.
  • It features a diesel oxidation catalyst for particulate matter (PM) and hydrocarbon (HC) control.
  • Selective catalytic reduction (SCR) reduces NOx output and provides integrated sound attenuation.
  • The CEM is controlled by a separate dosing module that has been integrated into the standard generator set controls for complete monitoring, protection and closed loop NOx control.
  • For more information on the CEM, refer to cut sheet LEHE0359.
  • UL 2200 / CSA - Optional

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

    Optional Equipment:

      Control System
      • EMCP 4.4
      • Control panel mounting
      • Local annunciator
      • Remote annunciators
      • Dust proof control panel
      • Volt free contact
      • Device server
      • Ground fault relay
      • Optional external analog input
      • Breaker box mounting location
      • Separation plate
      • Remote E-stop button
      • EMCP 4.2
      • Controls include: Run / auto / stop control - Speed adjust - Voltage adjust - Engine cycle crank - Emergency stop pushbutton
      • Digital indication for: rpm - DC volts - operating hours - Oil pressure (psi, kPa or bar) - Coolant temperature (C or F) - Volts (L-L & L-N), frequency (Hz) - Amps (per phase & average) - Power factor (per phase & average) - kW (per phase & average) - kVA (per phase & average) - kVAr (per phase and average) - kW-hr (total) - kVAr-hr (total)
      • Warning / Shutdowns with common LED indication of shutdowns for: Low oil pressure - high coolant temperature - Overspeed - Emergency stop - Failure to start (overcrank) - Low coolant temperature - Low coolant level
      • Programmable protective relaying functions: Generator phase sequence - Over / Under voltage (27/59) - Over / Under frequency (81 o/u) - Overcurrent (50/51)
      • Programmable Input / Output: 2 programmable digital inputs - 2 programmable relay outputs (Form A) - 2 programmable relay outputs (Form C)
      • Communications: Customer data link (RS485 Modbus RTu) - Serial annunciator module data link for local and remote annunciator IVR - Integrated Voltage Regulation (Digital) - EM10 Excitation Module
      • Control panel mounting location
      • Local annunciator
      • Remote annunciators
      • Control panel options: Dust proof control panel - volt free contact - Device server - Ground fault relay
      • Optional external analog input
      • Breaker box mounting location
      • Suitable for use as service equipment label
      • Separation plate
      Generators And Attachments
      • AREP Generator
      • CIP generators
      • Generator mounting and duct plate
      • Space heater
      Air Inlet System
      • Single element air filter
      • Dual element air cleaner
      • Single element air filter
      • Air cleaner - Single element
      • Air cleaner - Heavy duty
      • IBC certification wind load
      • Certificate of compliance
      Circuit Breakers
      • Package mounted single circuit breakers
      • Motorized single circuit breaker
      • Dual breakers first circuit breaker (CB1) LS/I package mounted
      • Dual breakers first circuit breaker (CB2) LS/I package mounted
      • Auxiliary contacts
      • Neutral bars
      • Current transformers
      • Power cables
      • 3 Pole 100% rated
      • Sound attenuated enclosures
      Exhaust System
      • Exhaust manifold; dry
      • Exhaust flexible fittings
      • Flange kits
      Generator Attachments
      • Permanent magnet generator
      Mounting System
      • Standard base Wide
      • Optional CB shroud
      • Locking fuel fill
      • 5 gallon spill containment
      • Overfill prevention valve
      Starting / Charging System
      • 10 Amp dual battery charger
      • Battery disconnect switch
      • Jacket water heater
      • Shore power control group
      • PGS test report @ 1.0 power factor
      • PGS test report @ 0.8 power factor
      • Generator test report
      • 4 Hour factory test (un-witnessed)