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Minimum Rating1245 ekW (1245 ekW)
Maximum Rating1245 ekW (1245 ekW)
EmissionsU.S. EPA Nonroad Tier 2
Lube Oil System - Refill84 gal (US) (318 l)
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. They combine decades of field experience of the 3500 platform with the latest electronics to ensure highest performance, low emissions, and simplified operator interface. Cat power modules are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty. 3512C (HD) land drilling power modules rating: 1245 ekW (1780 kVA) @ 60 Hz (1200 rpm). Meets U.S. EPA Tier 2 equivalent emission standards. Available using U.S. EPA Flexibility and for other regulated and non-regulated areas.


Minimum Rating1245 ekW (1245 ekW)
Maximum Rating1245 ekW (1245 ekW)
EmissionsU.S. EPA Nonroad Tier 2
Lube Oil System - Refill84 gal (US) (318 l)
Width93.9 in (2384 mm)
Length310.2 in (7880 mm)
Engine Control and ProtectionADEM A3
Fuel SystemEUI
Stroke8.5 in (215 mm)
Generator Set ControlEMCP 4.3
Displacement3574 in³ (59 l)
Weight29500 lb (13381 kg)
Oil Change Interval500 h (500 h)
Bore6.69 in (170 mm)
Cooling System - Engine41 gal (US) (157 l)

Benefits and Features

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. - Standard configurations are assembled, tested, and validated as a package to ensure performance, reliability and durability.

- 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

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

For all your petroleum power requirements, visit

Standard Equipment

  • Corrosion-resistant aftercooler core
  • Air Inlet shutoff
  • Regular duty air cleaner
  • ADEM A3 ECU, left-hand mounted
  • Direct rack control 0-200 mADC, space heater and jacket water heater connection and controls or
  • Cat Digital Voltage Regulator (DVR), includes reactive droop capability, 3-phase voltage sensing, kVAR/PF modes, RFI suppression, min/max exciter limiter and exciter diode monitor, space heater and jacket water heater connection and controls, temperature monitoring for 6 stator RTDs and 2 bearing RTDs via J1939
  • Separate-circuit aftercooled
  • Outlet controlled jacket water thermostat
  • Jacket water pump - gear driven
  • Dual outlet
  • Aftercooler water pump - gear driven
  • Aftercooler water thermostat
  • Dry exhaust manifold
  • Dual turbochargers, water cooled bearings
  • Exhaust adapter, 297 mm I.D. to 340 mm I.D. (11.7 in to 13.4 in)
  • Weldable flange, 360 mm I.D. (14.2 in)
  • SAE No. 00 flywheel
  • SAE No. 00 flywheel housing
  • SAE standard rotation
  • Fuel filter simplex (LH) with priming pump (LH)
  • Fuel transfer pump
  • Fuel return line with flexible connection
  • Electronic unit injectors
  • Fuel priming pump
  • Emergency stop button
  • Analog gauges:
  • Service port connector
  • Customer connection terminal blocks
  • 140 mm (5.5 in) Graphical Display
  • Communication
  • Controls
  • Generator Set Protection
  • Outputs
  • Inputs
  • Other Features
  • Crankcase breather
  • Oil cooler
  • Shallow oil pan
  • Oil drain extension, 2 in NPT female connection
  • Simplex oil filter
  • 4.19 m (165 in) length, 412 mm (16.2 in) height tubes, 1.18 m (50.5 in) wide
  • Viscous damper drive line coupler
  • Accessory drive
  • Lower LH front (available for PTO usage)
  • Front housing, two-sided
  • Engine alarms, derate, and shutdown in abnormal operation
  • TDI air starting motor, RH - 1034 kPa (150 psi)
  • LH control air silencer
  • Paint - Cat yellow
  • Vibration damper and guard
  • Lifting eyes
  • Lift and cable two provisions

Optional Equipment

  • Heavy duty air cleaner
  • Remote air inlet adapter - rectangular
  • Remote air inlet adapter - round
  • Load sharing governor, 2301A
  • Load sharing module
  • Governor conversion to 0-200 mA direct rack control
  • Radiator options:
  • Coolant level sensor
  • Coolant conditioner
  • Exhaust flexible fitting, 318 I.D. mm (12.5 in)
  • Elbow, 305 mm (12 in)
  • Muffler 305 mm (12 in), non spark arresting
  • Muffler, 356 mm (14 in), spark arresting, includes companion flanges, clean-out box, and spark box
  • Muffler, 305 mm (12 in), spark arresting, includes companion flanges, clean-out box, and spark box
  • Custom fuel filter
  • Primary fuel filter
  • Primary fuel filter with water separator
  • Barrel-mounted petroleum terminal box with air filter and pressure differential switch
  • Barrel-mounted petroleum terminal box
  • Current droop transformer
  • Cable access box
  • Low voltage extension box
  • Current sensing transformers (3)
  • Bearing temperature detectors
  • Communications module PL1000T
  • Communications module PL1000E
  • Thermocouples installed, one per cylinder
  • RH installed centrifugal oil filter
  • Crankcase fumes disposal
  • Oil level regulator
  • 7.62 m (25 ft) outer base
  • 9.14 m (30 ft) outer base
  • 12.19 m (40 ft) outer base
  • Package isolator supports (3), for mounting inner base to customer-supplied base
  • Custom base
  • Alternator, 24V, 60A
  • Crankshaft pulley
  • Explosion relief valves (3)
  • Metal particle detector switch
  • Metal particle detector with annunciator
  • Custom starting motor
  • Air pressure regulator
  • LH installed engine barring group
  • Jacket water heater, UL recognized, 120-240V, single phase, 6 kW, LH and RH mounted
  • Jacket water heater, UL recognized, 120-480V, single phase, 12 kW, LH and RH mounted
  • Jacket water heater lines