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Oil and gas drilling is a complex task that requires specialized power generation equipment. Cat 3500 power modules are specifically designed for drilling operations of electric AC rigs. The 3500 platform carries decades of field experience in drilling operations across a wide variety of environmental conditions. Cat power modules are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty. 3512 land drilling power module rating: 790-1035 ekW (1130-1430 kVA) @ 50/60 Hz (1000/1200/1500 rpm). Not emissions certified, available for non-regulated areas.

Engine Specifications

  • Minimum Rating 665.0 ekW 665.0 ekW
  • Maximum Rating 1035.0 ekW 1035.0 ekW
  • Emissions Non-certified Non-certified
  • Aspiration Turbocharged-Aftercooled Turbocharged-Aftercooled
  • Bore 6.69 in 170.0 mm
  • Displacement 3158.0 in³ 52.0 l
  • Engine Control and Protection Woodward Woodward
  • Fuel System MUI MUI
  • Generator SR4B SR4B
  • Oil Change Interval 500.0 h 500.0 h
  • Stroke 7.48 in 190.0 mm
  • Voltage 600 600
  • Weight 34644.0 lb 15714.0 kg


  • Height 115.6 in 2936.0 mm
  • Length 310.0 in 7874.0 mm
  • Width 93.9 in 2384.0 mm

Capacity for Liquids

  • Cooling System - Engine 41.0 gal (US) 157.0 l
  • Lube Oil System - Refill 84.0 gal (US) 318.0 l

Custom Packaging

For any petroleum application, trust Caterpillar to meet your project needs with custom factory generator sets and mechanical packages. Cat engines, generators, controls, radiators, and transmissions can be custom designed and matched in collaboration with our local dealers to create unique solutions. Custom packages are globally supported and are covered by a one year warranty after startup.


- Every Cat generator set is full-load tested to ensure proper engine performance. - Generator sets are assembled, tested, and validated as a package to ensure performance, reliability and durability.

Product Support Offered Through Global Cat Dealer Network

- More than 2,200 dealer outlets - Cat factory-trained dealer technicians service every aspect of your Cat petroleum product - Worldwide parts availability, service, and warranty - Preventive maintenance agreements available for repairbefore- failure options - S•O•SSM program matches your oil and coolant samples against Caterpillar set standards to determine: • Internal engine component condition • Presence of unwanted fluids • Presence of combustion by-products • Site-specific oil change interval

Over 80 Years of Engine Manufacturing Experience

Ownership of these manufacturing processes enables Caterpillar to produce high quality, dependable products.

Web Site

For all your petroleum power requirements, visit

3512 Standard Equipment

Air Inlet System

  • Corrosion-resistant aftercooler core
  • Regular duty air cleaner
  • Service indicator

Control System

  • Governor, Woodward EG6PC actuator — RH
  • Magnetic pickup

Cooling System

  • Thermostats and housing (dual outlet)
  • Jacket water pump, gear driven

Exhaust System

  • Dry exhaust manifold
  • Exhaust flexible fitting, adapters, and flanges

Flywheel and Housing

  • SAE No. 00 flywheel
  • SAE No. 00 flywheel housing
  • SAE standard rotation

Fuel System

  • Fuel filter
  • Fuel transfer pump
  • Flexible fuel lines
  • Fuel priming pump


  • Oilfield generator
  • Twin-bearing, close-coupled


  • Analog instrument gauges:

Lubrication System

  • Crankcase breather
  • Oil cooler
  • Oil filter
  • Shallow oil pan
  • Oil drain extension, 2 in NPT female connection

Mounting System

  • Oilfield base 7.85 m (25 ft 9 in) length Heavy-duty land rig inner baseframe — three-point mount to oilfield base

Power take-offs

  • Accessory drive
  • Front housing, two-sided

Protection System

  • Hydra-mechanical shutoffs (low oil pressure, high water temperature and overspeed, air inlet shutoff). Monitoring gauge and emergency remote shutoff
  • Alarm switches, low oil pressure, high water temperature (Marine Society approved) for connection to customer supplied alarm panel
  • Manual shutoff control, LH

Starting System

  • Air starting motor
  • Air silencer


  • Paint - Cat yellow
  • Vibration damper and guard
  • Lifting eyes

3512 Optional Equipment

Air Inlet System

  • Heavy duty air cleaner
  • Remote air inlet adapters

Control System

  • Load sharing governor, 2301A
  • Load sharing module
  • Governor conversion to 0-200 mA direct rack control

Cooling System

  • Coolant level sensors
  • Connections

Exhaust System

  • Exhaust elbows
  • Exhaust mufflers

Fuel System

  • Primary fuel filter

Generator and Attachments

  • Low voltage extension box
  • Potential and current transformers
  • Air filter
  • Cable access box
  • Bearing RTDs


  • Customer management device
  • Gauges and instrumentation panels
  • Switches and contactors

Lubrication System

  • Crankcase fumes disposal
  • Oil pan accessories

Mounting System

  • Bases

Power Take-off

  • Crankshaft pulley
  • Front stub shaft
  • Charging alternator

Protection System

  • Explosion relief valves (3)
  • Shutoffs
  • Switches and contactors

Starting System

  • Manual air starter
  • Air pressure regulator


  • Engine barring group

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