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Oil and gas drilling is a complex task that requires specialized power generation equipment. Cat 3500 generator sets 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 generator sets are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty.3516 land drilling generator set. Ratings: 1256 ekW (1835 kVA) @ 60 Hz (1200 rpm). Not emissions certified, available for non-regulated areas.

Engine Specifications

Minimum Rating 1245.0 ekW 1245.0 ekW Less
Maximum Rating 1245.0 ekW 1245.0 ekW Less
Emissions Non-certified Non-certified Less
Bore 6.69 in 170.0 mm Less
Oil Change Interval 500.0 h 500.0 h Less
Generator SR4B SR4B Less
Aspiration Turbocharged-Aftercooled Turbocharged-Aftercooled Less
Weight 40433.0 lb 18340.0 kg Less
Engine Control and Protection Woodward Woodward Less
Voltage 600 600 Less
Stroke 7.48 in 190.0 mm Less
Displacement 4210.0 in³ 69.0 l Less
Fuel System MUI MUI Less


Length 310.0 in 7874.0 mm Less
Width 93.9 in 2385.0 mm Less
Height 98.3 in 2497.0 mm Less

Capacity for Liquids

Cooling System - Engine 61.5 gal (US) 233.0 l Less
Lube Oil System - Refill 107.0 gal (US) 405.0 l Less

Product Design

- Developed specifically to meet the demands of oil and gas applications- Proven reliability and durability- Robust diesel strength design prolongs life and lowers owning and operating costs- Designed to perform in oilfield conditions, including high ambient and high altitude applications- Market-leading power density- Designed to perform in oilfield conditions, including high ambient and high altitude applications- Long overhaul life proven in oilfield applications- Core engine components designed for reconditioningand reuse at overhaul

Ease of Installation

- Inner-outer base mounting configuration simplifies rigintegration- Wide range of attachments enable configurationflexibility- Inner base three-point generator mounting maintainsfactory alignment- Single lifting point simplifies installation work


- E-stop pushbutton on instrument panel- Air shutoff and explosion relief valves available- Extra alarms, inputs, and outputs available

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 ensureproper engine performance.- Generator sets are assembled, tested, andvalidated as a package to ensure performance, reliabilityand durability.

Product Support Offered Through Global Cat Dealer Network

- More than 2,200 dealer outlets- Cat factory-trained dealer technicians service everyaspect 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 samplesagainst 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 enablesCaterpillar to produce high quality, dependable products.

Web Site

For all your petroleum power requirements, visit www.catoilandgasinfo.com.

3516 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 temperatureand overspeed, air inlet shutoff). Monitoring gauge and emergencyremote shutoff
  • Alarm switches, low oil pressure, high water temperature (MarineSociety 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

3516 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