New | G3512 750kW Gas Generator Set

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

Gas Generator Sets Specification
Gas Standby Rating750kW
Fuel TypeNatural Gas
Compression Ratio9.7
Displacement3173 in³
Engine Specifications
Bore6.7 in
Displacement3173 in³
Engine ModelG3512
Stroke7.5 in
Generator Set Dimensions
Length205.7 in
Width90 in
Height99.4 in
Weight27500 lb
Generator Set Configurations
Emissions/Fuel StrategyU.S. EPA Stationary Emergency Certified

· 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

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.

  • 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

·   wide Range Of Bolt-on System Expansion Attachments, Factory Designed And Tested
·   flexible Packaging Options For Easy And Cost Effective Installation

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

·   fully Prototype Tested
·   field Proven In A Wide Range Of Applications Worldwide
·   certified Torsional Vibration Analysis Available

For All Your Gas Power Requirements, Visit

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

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:










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With only a few days notice, we were able to get the emergency system working properly. Hawthorne Cat provided great leadership and excellent field support.
Mark Cripe
Helix Electric

San Diego - Power
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858.376.6874 office
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858.376.6888 office
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858.376.6898 office
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808.676.0322 office
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Sales Representative
671.649.4241 office
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Richard Nostratis
Service Manager
671.649.4212 office
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