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C15 (50 Hz)

C15

Overview

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

Specifications

Units: 
Maximum Rating 550 kVA
Minimum Rating 365 kVA
Emissions/Fuel Strategy Tier 2 or Tier 3
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Benefits & Features

Cat Generator Set Package

    • 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

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

A-Frame 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

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  October 22, 2025

Specifications

Units: 
Generator Set Specifications
Maximum Rating 550 kVA
Minimum Rating 365 kVA
Emissions/Fuel Strategy Tier 2 or Tier 3
Voltage 208 to 600 Volts
Frequency 50 Hz
Speed 1500 rpm
Duty Cycle Standby, Prime
Engine Specifications
Engine Model C15 ATAAC, I-6, 4-Stroke Water-Cooled Diesel
Bore —
Stroke —
Displacement —
Compression Ratio 16.1:1
Aspiration Air to Air Aftercooled
Fuel System MEUI
Governor Type Adem™A4
Generator Set Dimensions
Length - Maximum —
Width - Maximum —
Height - Maximum —

Benefits & Features

Cat Generator Set Package

    • 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

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

A-Frame 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

GCCP 1.3 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

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

Worldwide 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

Certification

Certification

Standard Equipment

  • Air System
    • Turbocharger
    • Aftercooler core
    • Air cleaner - Non canister disposable paper filter
  • Air Inlet
    • Air cleaner
  • Control Panel
    • GCCP 1.3
  • Cooling
    • Package mounted radiator
  • Cooling System
    • Caterpillar extended life coolant
    • Radiator and cooling fan with guard
    • Fan drive, battery charging alternator drive
    • Coolant drain line with valve
  • Exhaust
    • Base, formed steel with single wall integral 8-hour fuel tank
    • Standard open set fuel tank/base supplied
  • Fuel
    • Primary fuel filter with integral water separator
    • Secondary fuel filters
    • Fuel priming pump
  • Fuel System
    • Engine fuel transfer pump
    • Primary fuel filter w/integral water separator and secondary filter
    • Fuel priming pump
    • Flexible fuel lines
    • Fuel cooler
  • Generator
    • Matched to the performance and output characteristics of Cat engines
    • IP23 Protection
    • Load adjustment module provides engine relief upon load impact and improves load acceptance and recovery time
  • Power Termination
    • Busbar
  • Generator and Attachments
    • Mandatory option circuit breaker, IEC, 3 pole, mounted in power centre
    • Optional LC Frame generator - IP23 Protection
    • Segregated low voltage (AC/DC) wiring panel
    • Integrated voltage regulator (IVR)
    • Power center, IP22
  • Mounting
    • Rubber vibration isolators
  • Governing System
    • Cat electronic governor (ADEM A4).
  • Lube System
    • Oil cooler
    • Oil drain valves
  • Mounting System
    • Captive linear vibration isolators between base and engine-generator includes lifting provisions and termination points for coolant and lube oil drain lines
  • Starting/Charging
    • 24 Volt battery with rack and cables
  • General
    • Engine and alternator pre paint, Caterpillar yellow

Optional Equipment

  • Air Inlet System
    • Single element air cleaner
    • Dual element air cleaner
  • Exhaust
    • Industrial, residential, critical mufflers
  • Certifications
    • EU Certificate of Conformance (CE)
    • Global certification for CIS
  • Generator
    • Excitation: [ ] Permanent magnet excitation (PMG) Excited (PM) [ ] Internally Excited (IE)
    • Oversize and premium generators
    • Anti-condensation heater
  • Power Termination
    • Circuit breakers, UL listed
    • Circuit breakers, IEC compliant
  • Circuit breakers
    • Shunt trip for IEC circuit breaker
    • 4 Pole (IEC-100% rated) Circuit breakers - Package mounted
    • Auxiliary contacts, circuit breaker
    • 3 Pole (IEC-100% rated) Circuit breakers - Package mounted
    • 3 Pole (IEC-100% rated) Circuit breakers - Motorised
    • Power terminal strip
    • 4 Pole (IEC-100% rated) Circuit breakers - Motorised
    • Padlockable circuit breaker device
  • Generator and Attachments
    • Permanent magnet excitation (PMG) generator
    • LC frame CIP generator
    • Oversize LC frame generator
    • Space heaters
    • CIP A Frame generator
    • Oversize A Frame generator
    • Ingress protection
    • A Frame generator - IP21 Protection
    • LC frame generator
  • Control Panels
    • Fuel level sensor
    • Volt free contacts
    • Oil temperature displays
    • Local annunciator
    • GCCP 1.4
    • Local alarm horn
    • Remote annunciator module
  • Starting/Charging
    • Oversize batteries
    • Battery chargers
    • Jacket water heater
    • Heavy duty starting system
    • Charging alternator
  • Cooling System
    • Low coolant temperature alarm
    • Stone guards
    • Radiator duct flange
  • General
    • Narrow, wide or skid base
    • Single or dual wall integral fuel tanks
    • Seismic Certification per applicable building codes: IBC 2000, IBC 2003, IBC 2006, IBC 2009, CBC 2007
    • The following options are based on regional and product configuration:
    • Automatic transfer switches (ATS)
    • Integral & sub-base UL listed dual wall fuel tanks
    • CSA Certification
    • EEC Declaration of Conformity
    • Single or dual wall sub-base fuel tanks
    • UL 2200 package
    • Sound attenuated, weather protective or high ambient weather protective enclosure
    • EU Certificate of Conformance (CE)
  • Enclosures
    • High ambient sound attenuated enclosures
    • Sound attenuated enclosures
  • Exhaust System
    • 6 and 8 inch elbow kit
    • Manifold and turbocharger guards
    • End in/end out mufflers - 10, 25 and 35 dBA attenuation
    • Engine mounted muffler
    • 6 and 8 inch flange GP
    • Flexible exhaust fittings
  • Fuel System
    • Fuel transfer system controls
    • Manual fuel transfer pump
    • Dual wall fuel tank base
  • Lube System
    • Manual sump pump
  • Mounting System
    • Narrow skid base - replaces standard fuel tank base
  • Special Test / Reports
    • PGS Test report @ 1.0 power factor
    • PGS Test report @ 0.8 power factor
  • Starting / Charging System
    • 5 Amp single Battery charger
    • Jacket water heater
    • Battery disconnect switch

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