3512B Diesel Generator Set

The 3512B generator set has been developed for a wide range of applications, from emergency standby installations such as healthcare and datacenters to continuously powering remote installations. The packages can be optimized for performance that matters to you with either low emissions or low fuel consumption versions available. Backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty, Cat generator sets will provide the reliability and durability you expect.

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Minimum Rating 1230 eKW
Maximum Rating 1500 eKW
Emissions/Fuel Strategy Low Fuel, Low Emissions
Voltage 380 to 480 Volts
Frequency 60 Hz
Speed 1800 rpm
Duty Cycle Standby, Mission Critical, Prime, Continuous
Engine Model 3512B TA, V-12, 4-Stroke Water-Cooled Diesel
Bore 6.69 in
Stroke 7.48 in
Displacement 51.8 in
Compression Ratio 14.0:1 Std 15.5:1 HD
Aspiration TA
Fuel System Electronic Unit Injection
Governor Type ADEM™A3
Length - Maximum 207.8 in
Width - Maximum 90 in
Height - Maximum 94.9 in
Dry Weight - Genset (minimum) 24297 lb
Dry Weight - Genset (maximum) 24959 lb
Air Inlet System
  • Air cleaner; single element canister type with service indicator
Control System
  • True RMS AC metering, 3-phase, +/-2% accuracy
Control Panel
  • DC volts
  • 24-volt DC operation
  • kVA (per phase, average & percent)
  • Engine cool-down timer
  • Coolant temperature
  • kW-hr (total)
  • Amps (per phase & average)
  • Over / under frequency (81 o/u)
  • Text alarm / event descriptions
  • Accessory module data link
  • Alarm acknowledge
  • Warning / shutdown with common LED indication of shutdowns for:
  • Auto / start / stop control
  • Controls:
  • Failure to start (overcrank)
  • Generator mounted - rear facing
  • kVAr (per phase, average & percent)
  • kVAr-hr (total)
  • Reverse reactive power (kVAr) (32RV)
  • Volts (L-L & L-N)
  • Serial annunciator module data link
  • 4 programmable relay outputs (Form A)
  • Lamp test
  • Operating hours
  • Overcurrent (50/51)
  • kW (per phase, average & percent)
  • Communications:
  • 6 programmable digital inputs
  • RPM
  • Engine cycle crank
  • 2 Programmable relay outputs (Form C)
  • IVR includes reactive droop capability, 3-phase voltage sensing
  • High coolant temperature
  • Digital indication for:
  • Environmental sealed front face
  • Power Factor (per phase & average)
  • Speed adjust
  • Emergency stop pushbutton
  • Limiter and exciter diode monitor
  • Low oil pressure
  • EMCP 4.2B
  • Low coolant level
  • 2 Programmable digital outputs
  • KVAR/PF modes, RFI suppression, min/max exciter
  • Oil pressure (psi, kPa or bar)
  • Customer data link (Modbus RTU)
  • True RMS AC metering, 3-phase, +/-2% accuracy
  • Overspeed
  • Frequency (Hz)
  • Emergency stop
  • Generator set packages include Caterpillar's Voltage Regulator (IVR).
  • Reverse power (kW) (32)
  • Low coolant temperature
  • Generator phase sequence
  • Programmable protective relaying functions:
  • Over / under voltage (27/59)
Cooling System
  • Caterpillar extended life coolant. (Not included with packages without radiator, installed SF44CTS, shipped loose radiators or heat exchangers)
  • Fan and belt guards.
  • JWAC
  • Coolant drain line with valve
  • Coolant level sensors. (Not included with packages without radiator)
Exhaust
  • Dry Exhaust Manifold
  • Flanged faced outlet(s)
Fuel System
  • Fuel cooler; not included with packages without radiator
  • Fuel priming pump
  • Secondary fuel filters
  • Flexible fuel lines - shipped loose
Generators and Attachments
  • NEMA Class H insulation
  • Winding temperature detectors
  • Internal excitation or permanent magnet
  • LV:
  • 6 Lead
  • 60 Hz models: NEMA standard hole pattern
  • Class H temperature rise at 40C ambient (125C prime / 150C standby)
  • 3 Phase brushless, salient pole
  • Busbar connections, top center mounted, top cable entry
  • Random wound
Governing System
  • Woodward 2301A isochronous governor
Lube System
  • Oil drain lines and valve
  • Lubricating oil
  • Integral lube oil cooler
  • Fumes disposal
  • Gear type lube oil pump
  • Oil filter, filler and dipstick
Mounting System
  • Rails - engine/generator/radiator mounting
  • Rubber anti-vibration mounts (shipped loose)
Starting / Charging System
  • Battery disconnect switch
  • Battery and battery rack w/cables
  • 24-volt electric starting motor
  • 50 Amp charging alternator
General
  • SAE Standard Rotation
  • Paint - Caterpillar yellow with high gloss black rails & radiator
  • Flywheel and Flywheel housing-SAE No. 00
  • RH Service
Air Inlet System
  • Air Cleaner: Includes installed single element Cat filter and service indicator
  • Duel element air filters
  • Single stage air cleaners
Control Panels
  • Cat connect (must choose one)
  • RTD module - may select one
  • Modbus monitoring of packages
  • First local annunicator
  • EMCP 4.3, EMCP 4.4
  • CAN 2 network equipment
  • Remote custom annunciator
  • Locale discrete I / O package
  • Vandle proof panel door
Cooling System
  • Optional radiator arrangements
  • Water level gauge
  • Coolant
Control System
  • Generator yemperature monitoring
Exhaust System
  • Exhaust Y adapters
  • Exhaust Elbows
  • Mufflers
  • Flexible fittings
  • Exhaust flange and expanders
Generators and Attachments
  • Space heater control
  • Generator conversion
  • Space heater
Instrumentation
  • Pyrometer and thermocouples
Lube System
  • Oil level regulator
  • Prelube manual sump pump
  • Electric prelube sump pump
  • Lube oil
Special Tests / Reports
  • PGS test report @ 0.8 power factor
  • Generator test report
  • Standard generator TVA report
  • PGS test report @ 0.8 power factor
  • Custom generator TVA report
  • Torsional vibration analysis
  • PGS test report @ 1.0 power factor
  • Standard engine test charge
  • Generator test report
  • Standard engine test charge
  • PGS test report @ 1.0 power factor
  • Generator fuel consumption test
General
  • Barring devices
Crankcase System
  • Ventilation system
  • Protection systems
Batteries and Battery Housing
  • 24 Volt battery set - Dry
  • Battery chargers - 10, 20 and 35 amp
Power Connection System
  • EMCP voltage and current sensing groups
  • Breaker power connections
  • Center post busbar
Circuit Breaker - LV Packages
  • Right hand power connections
  • Electronically operated circuit breakers
Mounting System
  • Low efficiency isolators
  • Spring type vibration isolator
  • Spring type vibration isolator
  • Low efficiency isolators puck
Power Connections
  • Low voltage - Package mounted circuit breakers
  • Low voltage - 1400 and 1600 Frame generators
  • Electrically operated circuit breakers
  • Low voltage - Power connection options
Starting / Charging System
  • Jacket water heater wiring groups
  • 35 Amp battery charger
  • 20 Amp battery charger
  • Jacket water heaters
  • 10 Amp battery charger
  • Electric starting motors
  • Starter covers
  • Batteries, racks and cables
Starting / Charging Systems
  • Electric starting motors
  • Starter covers
  • Jacket water heater
Extended Service Coverage
  • Gold - 36,48, 60, 120 month coverage
  • Cat branded commercial power system
  • Silver - 36 ,48, 60, 120 month coverage
  • Platinum - 24, 36, 48, 60, 120 month coverage