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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Height - Maximum
94.9 in
Length - Maximum
207.8 in
Width - Maximum
90 in
Minimum Rating
1230 eKW

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Product Specs

Generator Set Dimensions

Height - Maximum
94.9in
Length - Maximum
207.8in
Width - Maximum
90in
Dry Weight - Genset (minimum)
24297lb
Dry Weight - Genset (maximum)
24959lb

Generator Set Specifications

Minimum Rating
1230 eKW
Maximum Rating
1500 eKW
Voltage
380 to 480 Volts
Frequency
60 Hz
Speed
1800 rpm
Emissions/Fuel Strategy
Low Fuel, Low Emissions
Duty Cycle
Standby, Mission Critical, Prime, Continuous

Engine Specifications

Engine Model
3512B TA, V-12, 4-Stroke Water-Cooled Diesel
Compression Ratio
14.0:1 Std 15.5:1 HD
Aspiration
TA
Governor Type
ADEM™A3
Fuel System
Electronic Unit Injection
Bore
6.69in
Displacement - HD
3573.55in³
Displacement - Std
3161.03in³
Stroke - HD
8.46in
Stroke - Standard
7.48in
Air Inlet
Single element canister style with service indicator
Exhaust Flange Size
203.2 mm (8.0 in)
Stroke
7.48in
Displacement
51.8in

Standard/Optional Features

Standard Equipment:

  • 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

Optional Equipment:

  • 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