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C27 Generator Set

The C27 diesel generator sets have been developed for your mission critical, standby and prime applications. Producing reliable power from 680 to 800 ekW at 60 Hz, each generator set has been designed to meet ISO 8528-5 transient response requirements and to take on 100 % rated load in one step. The C27 is certified as a low fuel consumption system as well as having a certificate for EPA Stationary Emergency (Tier 2). Seismic certification is also available for selected models, ensuring your generator sets are equipped for that unexpected disturbance. The integrated control system, including ATS and switchgear, ensures a consistent power supply and connection to your fleet through on-site and remote monitoring options. Our EMCP 4 control panel features a user-friendly interface and puts your management and diagnostics tools in one location. The EMCP 4.4 controller provides multi generator set paralleling capability, allowing you to use multiple generator sets for increased power output and improved reliability. It’s not just quality that matters but customization, choose from a broad range of accessories and bolt-on system expansion attachments. Discover our upgradeable packaging options to work with your spatial restrictions and environmental conditions. Our C27 generator sets are developed for such prerequisites, so that you can meet your specific power needs. Build in additional safety features with the UL 2200 and CSA certified package options.

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Maximum Rating800 ekW

Minimum Rating635 ekW

Emissions/Fuel StrategyLow Fuel, Tier 2 Nonroad Equivalent

Voltage208 to 600 Volts

Frequency60 Hz

Speed1800 rpm

Duty CycleStandby, Prime

Engine ModelC27 ATAAC, V-12, 4-Stroke, Water-Cooled Diesel




Compression Ratio16.1:1


Fuel SystemMEUI

Governor TypeAdem™A4

Length - Maximum184in

Width - Maximum67.8in

Height - Maximum85.1in


Air cleaner; single element canister type with service indicator



Digital Indicators

Warning/shutdown Indicators

Programmable protective relaying functions


Features include:


Coolant level sensor

Coolant drain line with valve terminated on edge of base


Caterpillar extended life coolant

Radiator sized to 50 degrees C

Fan and belt guards drive


Radiator duct flange

High ambient radiator

Extended life coolant

Certified radiator

Standard radiator


203 mm (8 in) ID round flanged outlet

Exhaust manifold - dry





Exhaust through the wall kit

Flexible fittings

Guard and shield system


Primary fuel filter with integral water separator

Electric fuel priming pump

Fuel cooler

Flexible fuel lines - installed

Secondary fuel filters


Integrated voltage regulator (IVR) includes

For EPA Stationary Emergency (EPA Tier 2 Emissions) configurations:

Busbar connections:

SR5 Permanent magnet excitation (PMG) (PM)

For Low BSFC configurations:


Standard volume oil pan - 68 Ltr

Lubricating oil

Oil drain lines and valve

Gear type lube oil pump

Oil filter, filler and dipstick

Fumes disposal - open crankcase ventilation routed to front of package

Integral lube Oil cooler


Prelube pumps

Oil level regulator


Rubber anti-vibration mounts - shipped loose

Rails - engine/generator/radiator mounting


Mounting base type

IBC vibration isolators

Puck style low efficiency isolators

Spring type vibration isolators


24-Volt electric starting motor

Battery, rack and cables - shipped-loose

Battery disconnect switch

Charging alternator 45A


Paint - Caterpillar yellow with high gloss black rails & radiator

SAE standard rotation

Right hand servicing

Flywheel and flywheel housing-SAE No. 0 and SAE No. 18


Miscellaneous inspection

US aid emblem

Special paint

SGS Inspection


Standard air cleaners

Heavy duty air cleaners

Dual element air cleaners


20 Amp enclosure Battery chargers

10 Amp Battery chargers

24 Volt battery set - Dry

Air starting motor with control and silencer

Space heater

24 Volt electric start motors - Heavy duty

Jacket water heaters


400, 800, 1200, 1600, 2000, 2500, 3000 Amp, 3 pole, UL-100% rated Circuit breakers

2000 Amp, 3 pole, IEC rated Circuit breakers

800 Amp, 4 pole, IEC rated Circuit breakers


Cable shroud - Bottom mounted

Cable shroud - Top mounted

EMCP 4.3, EMCP4.4

Side extension box

Remote annunciator module

Auxiliary box options

Remote mounted panel harness mounting kit

Remote mounted circuit breaker terminals

Modbus monitor local packages

Remote DIO module

Cat connect telematics

Load share module

Vandal proof panel cover

Installed DIO module

Remote mounting harness

Annunciator modules


Enclosure louvers

Enclosure with lifting base or fuel tank

Panel bracket

AC distribution panel, lights and outlet

Enclosure lighting

Enclosure colors

Special Sound attenuated enclosure

Enclosure fuel tank options

Cold weather bundle


60 Hz standard generators

60 Hz premium generators


Center post busbars

Cable entry - right/left/rear

Neutral grounding connection

Power connections - Right / Left / Rear


Torsional vibration analysis report

Generator test report

IBC seismic Certifications

OSHPD seismic Certifications

PGS Test report @ 1.0 power factor

PGS Test report @ 0.8 power factor

Special CSA test Certification

Standard engine test



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