C18 (50 HZ) | 550-850 kVA Diesel Generator

Diesel Generator Sets C18 (50 Hz)

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Key Specs

Maximum Rating
850 kVA
850 kVA
Minimum Rating
706 kVA
706 kVA
Emissions/Fuel Strategy
Low Fuel
Low Fuel


706 - 850 kVA Diesel Generator Set

The C18 diesel generator sets have been developed for your standby and prime applications. Producing reliable power from 706 to 850 kVA at 50 Hz, meeting ISO 8528-5 transient response requirements. The engines are configured for Low Fuel Consumption.


Greater than 15% kW/m2 *Increased Standby rating at 50Hz

Up to 37% Footprint Reduction

Requires less space for installation

Integrated Cat® Product Link™ Control System

  • Track Genset Health and Operation Parameters
  • Genset Utilization and Performance Tracking

Product Specifications for C18 (50 Hz)

Maximum Rating 850 kVA 850 kVA
Minimum Rating 706 kVA 706 kVA
Emissions/Fuel Strategy Low Fuel Low Fuel
Voltage 380 to 415 Volts 380 to 415 Volts
Frequency 50 Hz 50 Hz
Speed 1500 1500
Duty Cycle Standby, Prime Standby, Prime
Engine Model C18 ATAAC, I-6, 4-Stroke Water-Cooled Diesel C18 ATAAC, I-6, 4-Stroke Water-Cooled Diesel
Bore 5.71 in 145 mm
Stroke 7.2 in 183 mm
Displacement 1106.4 in³ 18.1 l
Compression Ratio 14.5:1 14.5:1
Aspiration Air to Air Aftercooled Air to Air Aftercooled
Fuel System Electronic unit injection Electronic unit injection
Governor Type Adem™A4 Adem™A4
Length - Maximum 162.4 in 4135 mm
Width - Maximum 78.3 in 1989 mm
Height - Maximum 75 in 1906 mm

C18 (50 Hz) Standard Equipment

Air Inlet System

  • Single element air cleaner
  • Turbocharger
  • Aftercooler core
  • Light duty air cleaner

Control System

  • GCCP 1.3


  • Coolant drain line with valve
  • Radiator and cooling fan with guard
  • Fan drive, battery charging alternator drive
  • Caterpillar extended life coolant

Exhaust System

  • Stainless steel exhaust flex gaskets, raincap and SAE exhaust flange for customer use - shipped loose

Fuel System

  • Standard 8 hour open set integral fuel tank

Generator and Attachments

  • LC frame generator - IP23 Protection
  • Matched to the performance and output characteristics of Cat engines
  • Segregated low voltage (AC/DC) wiring panel
  • Mandatory option circuit breaker, IEC, 3 pole, mounted in power centre
  • Integrated voltage regulator (IVR)
  • Power center, IP22
  • Integrated voltage regulator (IVR)

Governing System

  • Cat electronic governor (ADEM A4)

Lube System

  • Lubricating oil
  • Oil drain lines with valves

Mounting System

  • Captive linear vibration isolators between base and engine-generator.


  • 24 Volt battery with rack and cables


  • Engine and alternator pre-paint, Caterpillar yellow

C18 (50 Hz) Optional Equipment

Air Inlet System

  • Dual element air cleaner

Circuit breakers

  • 4 Pole (IEC-100% rated) Circuit breakers - Package mounted
  • Circuit breaker (IEC) Auxiliary contacts
  • 3 Pole (IEC-100% rated) Circuit breakers - Motorised
  • Padlockable circuit breaker device
  • Shunt trip for IEC breaker
  • Power terminal strip
  • 4 Pole (IEC-100% rated) Circuit breakers - Motorised
  • 3 Pole (IEC-100% rated) Circuit breakers - Package mounted

Control System

  • Local alarm horn
  • Protective devices: Earth fault relay - earth leageage Ground fault relay - Overload shutdown via breaker - Low fuel level alarm - Low fuel level shutdown - High fuel level alarm - Fuel level sensor
  • GCCP 1.4
  • Remote annunciator module
  • Oil temperature displays
  • Local alarm modules

Cooling System

  • Radiator transition flange
  • Low coolant temperature alarm


  • Sound attenuated enclosures (to be available soon)

Exhaust System

  • 8 and 10 inch elbow kits
  • 10, 25, 35 dB end in / end out mufflers
  • Engine mounted muffler
  • 8 and 10 inch GP flanges
  • Manifold and turbocharger guards

Fuel System

  • Integral - Dual wall fuel tank base
  • Fuel transfer system
  • Manual fuel transfer pump

Generator and Attachments

  • Space heaters
  • A Frame CIP generator
  • LC frame CIP generator
  • A Frame oversize generator
  • Ingress protection
  • LC frame oversize generators
  • LC frame generator
  • Permanent magnet excitation (PMG)

Lube System

  • Manual sump pump

Starting and Charging

  • Jacket water heaters
  • 5 Amp Battery charger
  • Battery disconnect switch
  • Jacket water heaters

See how C18 (50 Hz) compares against frequently compared products.

Service Agreement (Cat® CVA & LTSA)

Experience hassle-free ownership and predictable expenses with flexible Customer Value Agreements, which include Long-Term Service Agreements.

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Cat RAM and Condition Monitoring

Observe and manage your fleet from anywhere with Cat RAM, and benefit from real-time monitoring by expert advisors with Condition Monitoring.

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Maintenance and Repairs

Retain genset value with maintenance, upgrade kits, and repair options that extend lifecycles, optimise performance, and help you control costs.

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Media Gallery

C18 50 Hz Right Rear

C18 50 Hz Left Rear

C18 50 Hz

C18 50 Hz Front Left



C18 50 Hz Right Rear
C18 50 Hz Left Rear
C18 50 Hz
C18 50 Hz Front Left

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