3508B Offshore Generator Set

Cat 3500 offshore generator sets are specifically designed for drilling and production operations offshore. Decades of experience powering offshore vessels and platforms make have evolved into a product that offers proven performance, low emissions, high durability, and low owning and operating costs.Applications for 3500 offshore generator sets include main power, essential services power, and emergency power on-board drilling and production rigs and vessels.Cat generator sets are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty.Cat® 3508B offshore generator set. Ratings: 590-910 ekW (738-1138 kVA) @ 50/60 Hz (1000/1200/1500/1800 rpm). Meets IMO Tier I emission standards equivalent.

Engine Specifications

Minimum Rating 738kV·A
Maximum Rating 1138kV·A
Emissions IMO Tier I
Bore 6.7in
Displacement 2116in³
Stroke 7.5in
Fuel System EUI
Engine Control ADEM A3
Oil Change Interval 1000h
Weight 27503lb
Aspiration TUrbocharged-Aftercooled


Height 80.6in
Width 70.2in
Length 158.7in

Capacity for Liquids

Cooling System - Engine 81.6gal (US)
Lube Oil System - Refill 60gal (US)

Standard Equipment

  • Air Inlet System
    • Separate Circuit aftercooler core, corrosion resistant coated(air side)Air cleaner, regular dutyDual Turbochargers, 152 mm (6 in) OD straight connection
  • Control System
    • Caterpillar A-III Electronic Engine Control, LHwith Electronic Unit Injector Fuel SystemRigid Wiring Harness(10 amp DC power required to drive Electronic Engine Control Module)
  • Cooling System
    • Outlet controlled thermostat and housing, full opentemperature 92°C (198°F)
    • Jacket water pump, gear driven
    • Single water outlet connection, includes flange:143 mm (5.6")
    • Aftercooler fresh water cooling pump (SCAC), gear drivencentrifugal
    • SCAC pump circuit contains a thermostat to keep theaftercooler coolant from falling below 30°C (85°F)
  • Exhaust System
    • Dry gas tight exhaust manifolds with heat shieldsDual Turbochargers with watercooled bearings and heat shieldsExhaust outlet, vertical, 203 mm (8 in) round flanged outlet
  • Flywheels & Flywheel Housings
    • Flywheel, SAE No. 00, 183 teethFlywheel housing, SAE No. 00
  • Fuel System
    • Fuel filter
    • Fuel transfer pump
    • Electronically Controlled Unit Injectors
    • Fuel priming pump, LH
    • Rigid fuel return line with customer connection point asbase of engine
  • Instrumentation
    • Overspeed shutdown notification light, Emergency stop notification light
    • Graphical Unit (Marine Power Display) for analog or digital displayof:
  • Lube System
    • Crankcase breather, top mounted
    • Oil cooler
    • Oil filter and dipstick, LH
    • Oil pump, gear-type
    • Oil pan drain valve, 2" NPT female connection
  • Protection System
    • A-III Electronic Monitoring System provides customer programmableengine de-ration strategies to protect against adverse operatingconditions
    • Emergency stop push button (located in Electronic Instrument Panel)Safety shutoff protection:
  • Starting System
    • Air starting motor, RH, 620 to 1034 kPa (90 to 150 psi),LH control
    • Air silencer
  • General
    • Paint, Caterpillar yellow, with black rails
    • Vibration damper and guard
    • Lifting eyes
    • Engine and generator, three-point mounted to sub-base
    • Lift provisions on base
    • Oil drain extension
    • Engine length drip pan

Optional Equipment

  • Air Inlet System
    • Remote Air Inlet Adapters
  • Charging System
    • Battery Chargers
    • Charging Alternators
  • Control System
    • Load Sharing module
    • Local speed throttle control
    • Direct rack control interface, 0-200 mA DC control
  • Cooling System
    • Coolant level sensors
    • Connections
    • Air separator
  • Exhaust System
    • Flexible fittings
    • Elbows
    • Flanges
    • Flange and exhaust expanders
    • Mufflers
  • Fuel System
    • Fuel Cooler
    • Primary fuel filter
    • Fuel filters
    • Duplex fuel filters
    • Fuel level switch
  • Generator Attachments
    • Air filter — generator
    • Bearing temperature detectors
    • Cable access box
    • Manual voltage control
  • Instrumentation
    • PL1000T Communication Module
    • PL1000E Communication Module
    • Customer Interface Box
    • Remote panel display
    • Remote cylinder temperature display
    • Exhaust temperature thermocouples
    • Discrete I/O module
    • Intake manifold temperature sensors
    • Oil temperature sensor
  • Lube System
    • Duplex oil filter
    • Bypass centrifugal oil filter
    • 500-hour oil pan
    • Emergency lube oil connections
    • Oil level regulator
    • Prelube
    • Sump pump
  • Mounting System
    • Vibration isolators
  • Power Take-offs
    • Auxiliary drive shafts and pulleys
  • Starting System
    • Air or electric starting motor
    • Redundant start with select switch
  • Protection System
    • Spray shielding
    • Crankcase explosion relief valve
    • Metal particle detector
  • General
    • Jacket water heater