G3512 750kW

Select Units


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

Gas Generator Sets Specification

  • Fuel Type Natural Gas Natural Gas
  • Gas Standby Rating 750kW 750kW
  • Frequency 60Hz 60Hz
  • RPM 1800rpm 1800rpm
  • Compression Ratio 9.7 null 9.7 null
  • Displacement 3173.0 in³ 52.0 l

Engine Specifications

  • Aspiration TA TA
  • Bore 6.7 in 170.0 mm
  • Displacement 3173.0 in³ 52.0 l
  • Engine Model G3512 G3512
  • Stroke 7.5 in 190.0 mm

Generator Set Dimensions

  • Length 205.7 in 5224.0 mm
  • Width 90.0 in 2286.0 mm
  • Height 99.4 in 2525.0 mm
  • Weight 27500.0 lb 12500.0 kg

Generator Set Configurations

  • Emissions/Fuel Strategy U.S. EPA Stationary Emergency Certified U.S. EPA Stationary Emergency Certified

Cat Engine

· Robust high speed block design provides prolonged life and lower owning and operating costs
· Designed for maximum performance on low pressure gaseous fuel supply
· Simple open chamber combustion system for reliability and fuel flexibility


· Matched to the performance and output characteristics of engine
· Industry-leading mechanical and electrical design
· Industry-leading motor starting capabilities

Cat EMCP Control Panel

The EMCP controller features the reliability and durability you have come to expect from your Cat equipment. EMCP 4 is a scalable control platform designed to ensure reliable generator set operation, providing extensive information about power output and engine operation. EMCP 4 systems can be further customized to meet your needs through programming and expansion modules.

Design Criteria

  • Per NFPA 110 Level 1 Type 10 the generator set is able to start and be ready to accept load within 10 seconds
  • The generator set is capable of accepting 100% rated load in a single step
  • The generator set meets Class G2 ISO 8528-5 transient response for a 30% load step
  • Cooling system designed to operate in 45˚C/113˚F ambient temperatures with an air flow restriction of 0.5 in. water without derate


  • EPA - S.I. Stationary Emergency
  • UL 2200 Listed
  • CSA Certified
  • Certain restrictions may apply
  • Consult with your Cat dealer

Full range of attachments

·   Wide range of bolt-on system expansion attachments, factory designed and tested
·   Flexible packaging options for easy and cost effective installation

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 Cat® S•O•S℠ program cost effectively detects internal engine component condition, even the presence of unwanted fluids and combustion by-products

Proven system

·   Fully prototype tested
·   Field proven in a wide range of applications worldwide
·   Certified torsional vibration analysis available


For all your gas power requirements, visit

G3512 750kW Standard Equipment

Air Inlet

  • Dual air cleaners, 1 per side, with service indicator


  • Engine driven pumps for jacket water and separate circuit aftercooler


  • Inboard Exhaust manifolds


  • Gas Train: NFPA37 and CSA B149.3
  • 0.5 to 5 psi engine fuel inlet pressure
  • Pipeline Natural Gas: 800-1000 BTU/scf and 70-100 Methane Number
  • NOx sensor based air-fuel-ratio control
  • Fuel Safeties, “Energize to Run” (ETR) Gas Shutoff Valve (GSOV)


  • Matched to the performance and output characteristics of Cat engines
  • SR5 Generators include:


  • Gear type lube oil pump
  • Cartridge style oil filter
  • Integral lube oil cooler


  • Steel base- engine/generator/radiator mounting
  • Anti-vibration mounts available for isolation efficiencies above 95%


  • 24V DC starting motors
  • Batteries with rack and cables
  • Battery disconnect switch
  • Jacket Water Coolant Heaters: 208/240/480V, 60Hz, 9/12 kw, UL Listed


  • ADEM A4 speed governor with 4 to 20ma (0V to 5V) speed input

Control Panel

  • EMCP 4.3 Genset Controller


  • Electronic Ignition System (controlled by ADEM A4)
  • Individual cylinder Detonation Sensitive Timing


  • Paint -- Caterpillar Yellow except rails & radiators
  • Crankshaft vibration damper
  • Lifting eyes
  • Operation and Maintenance Manuals; Parts Book

G3512 750kW Optional Equipment


  • Exhaust Mufflers
  • Elbows, flanges, and flexible fittings


  • Voltages Available: 440/480/600/2400/4160
  • Random and Form wound available
  • Space Heater – 240V
  • Stator and bearing temperature monitoring and protection

Power Terminations

  • LH/RH/Rear Busbar connections
  • Top/Bottom Cable Entry
  • Circuit Breakers

Lube System

  • Lubricating oil
  • Oil Level Regulator
  • Sump Pump

Control System

  • Generator temperature monitoring & protection
  • Load share module
  • Annunciators


  • Starters: Either 2 or 3 electric starters available
  • Battery Chargers: 20, 35, or 50 AMP
  • Charging alternator, 45 AMP
  • Batteries (w/ rack and cables)
  • Electric Prelube Pump (AC)


  • Low efficiency (90%), rubber puck isolators
  • High efficiency (95%), spring isolators
  • Seismic isolators, rated to 1.5G

Cooling System

  • Package Mounted Radiator, sized for 45C/113F ambient to 300m/660ft
  • Low coolant level sensors (w/ radiator)
  • Jacket Water out: LH/RH, flanged or hose


  • The following options are based on regional and product configuration:

News & Events

View the latest company and product news, events and customer stories.


View the latest offers available on a range of Cat® equipment and genuine parts.

Social Media

Connect with us to learn more about our company, products, services and customers.

Branch Locations

With branches across the UK & Ireland, you can be sure that we’re never far away.


Effectively manage your equipment to reduce operating costs and improve efficiency.


Integrated technology can help you understand your equipment's output and help extend its lifespan.


Quick and easy financing with customised payment plans through Cat Financial.

Please share your feedback on!

Close window

We are committed to providing you with the best site experience possible.  Please take our brief survey to tell us how we are doing.

Thank you in advance for your time!