3512 Generator Set

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The 3512 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.

Pricing: Contact for Pricing

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Duty Cycle Standby, Mission Critical, Prime, Continuous
Emissions/Fuel Strategy Low fuel, Low Emissions
Frequency 50 Hz
Maximum Rating 1400 kVA
Minimum Rating 1000 kVA
Prime Power Rating 1275/1150 kVA
Speed 1500 rpm
Standby Rating 1400/1250 kVA
Voltage 380 to 415 Volts
Aspiration TA
Bore 6.69in
Compression Ratio 13.5:1
Displacement 3161.03in³
Engine Model 3512 TA, V-12, 4-Stroke Water-Cooled Diesel
Fuel System Direct Unit Injection
Governor Type Woodward
Stroke 7.48in
Dry Weight - Genset (maximum) 23060lb
Dry Weight - Genset (minimum) 22540lb
Height - Maximum 92in
Length - Maximum 207.5in
Length - Minimum 203.5in
Width - Maximum 79.3in

Standard Equipment:

  • Air Inlet System
    • Air cleaner; single element canister type with service indicator
  • Control Panel
    • Serial annunciator module data link
    • Accessory module data link
    • 2 Programmable digital outputs
    • Overspeed
    • Low coolant level
    • Oil pressure (psi, kPa or bar)
    • Amps (per phase & average)
    • 24 Volt DC operation
    • 2 Programmable relay outputs (Form C)
    • Auto / start / stop control
    • Speed adjust
    • DC volts
    • Reverse Reactive Power (kVAr) (32RV)
    • kVA (per phase, average & percent)
    • 6 programmable digital inputs
    • Low oil pressure
    • Text alarm / event descriptions
    • Volts (L-L & L-N)
    • Emergency stop
    • 4 programmable relay outputs (Form A)
    • Programmable protective relaying functions:
    • Co olant temperature
    • Reverse Power (kW) (32)
    • kVAr-hr (total)
    • Customer data link (Modbus RTU)
    • Generator mounted - rear facing
    • Over / under frequency (81 o/u)
    • High coolant temperature
    • Engine cool-down timer
    • EMCP4.2 controls including:
    • Engine cycle crank
    • kW (per phase, average & percent)
    • Lamp test
    • Generator phase sequence
    • Failure to start (overcrank)
    • Operating hours
    • Warning / shutdown with common LED indication of shutdowns for:
    • Environmental sealed front face
    • Emergency stop pushbutton
    • RPM
    • Frequency (Hz)
    • Low coolant temperature
    • kVAr (per phase, average & percent)
    • Alarm acknowledge
    • kW-hr (total)
    • Over / under voltage (27 / 59)
    • Power Factor (per phase & average)
    • Overcurrent (50 / 51)
    • Digital indication for:
    • True RMS AC metering, 3 phase, +/-2% accuracy
    • Communication:
    • Controls:
    • Generator mounted - rear facing
    • Low coolant level
    • Communications
    • kVAr (per phase, average & percent)
    • Warning/shutdown with common LED indication of shutdowns for:
    • Controls:
    • 2 Programmable digital outputs
    • Low coolant temperature
    • EMCP4.2 controller including:
    • Over/Under Frequency (81 o/u)
    • kW-hr (total)
    • Text alarm / event descriptions
    • Environmental sealed front face
    • RPM
    • Digital indication for:
    • Emergency stop
    • Serial annunciator module data link
    • kVA (per phase, average & percent)
    • Alarm acknowledge
    • kVAr-hr (total)
    • Auto / start / stop control
    • kW (per phase, average & percent)
    • Engine cool-down timer
    • True RMS AC metering, 3-phase, +/-2% accuracy
    • Failure to start (overcrank)
    • Over/Under voltage (27/59)
    • EMCP4.2 controls including: Emergency stop pushbutton
    • Low oil pressure
    • 24-volt DC operation
    • Volts (L-L & L-N)
    • Oil pressure (psi, kPa or bar)
    • Reverse Power (kW) (32)
    • Overcurrent (50/51)
    • 6 programmable digital inputs
    • Reverse Reactive Power (kVAr) (32RV)
    • Generator phase sequence
    • Operating hours
    • High coolant temperature
    • Overspeed
    • Accessory module data link
    • 2 Programmable relay outputs (Form C)
    • Frequency (Hz)
    • Coolant temperature
    • Customer data link (Modbus RTU)
    • Lamp test
    • Power Factor (per phase & average)
    • 4 programmable relay outputs (Form A)
    • Speed adjust
    • Amps (per phase & average)
    • Programmable protective relaying functions:
    • DC volts
    • Engine cycle crank
  • Cooling System
    • Coolant drain line with valve
    • JWAC
    • Fan and belt guards
    • Radiator fan and fan drive
    • Caterpillar extended life coolant. (Not included with packages without radiator, installed SF44CTS, shipped loose radiators or heat exchangers)
    • Coolant level sensors. (Not included with packages without radiator)
  • Cooling
    • Coolant level sensors. (Not included with packages without radiator)
    • Radiator fan and fan drive
    • Fan and belt guards.
    • Caterpillar extended life coolant. (Not included with packages without radiator, installed SF44CTS, shipped loose radiators or heat exchangers)
    • JWAC.
    • Coolant drain line with valve
  • Exhaust
    • Dry exhaust manifold
    • Flanged faced outlet(s)
    • Dry Exhaust Manifold
    • Flanged faced outlet(s)
  • Fuel System
    • Fuel cooler; not included with packages without radiator
    • Secondary fuel filters
    • Fuel priming pump
    • Flexible fuel lines - shipped loose
  • Fuel
    • Fuel priming pump
    • Fuel cooler; not included with packages without radiator
    • Secondary fuel filters
    • Flexible fuel lines - shipped loose
  • Generators And Attachments
    • 3 Phase brushless, salient pole
    • Exciter diode monitor
    • Note: 1800 frames are form wound, permanent magnet, with winding temp detectors
    • RFI suppression
    • 3 Phase voltage sensing
    • Min / max exciter limiter
    • Generator set packages include: Regulator (CDVR)
    • KVAR / PF modes
    • NEMA Class H insulation
    • Internal Excitation
    • Winding temperature detectors
    • Reactive droop capability
    • 50 Hz models: IEC standard hole pattern
    • Class H temperature rise at 40C ambient (125C prime/150C standby)
    • Random wound
    • Busbar connections, top center mounted, top cable entry
    • LV:
    • Caterpillar's Digital Voltage Regulator (CDVR) includes:
    • 6 Lead
    • Winding temperature detectors
    • Busbar connections, top center mounted, top cable entry
    • 50 Hz models: IEC standard hole pattern
    • NEMA Class H insulation
    • 3 phase brushless, salient pole
    • Exciter diode monitor
    • Caterpillar's Digital Voltage Regulator (CDVR) includes:
    • KVAR/PF modes
    • 3 Phase voltage sensing
    • Note: 1800 frames are form wound, permanent magnet, with winding temp detectors
    • LV:
    • 6 lead
    • Class H temperature rise at 40C ambient (125C prime/150C standby)
    • Reactive droop capability
    • Min / max exciter limiter
    • Random wound
    • Internal Excitation
    • Generator set packages include: Regulator (CDVR)
    • RFI suppression
  • Governing System
    • Woodward 2301A isochronous governor
    • Woodward 2301A isochronous governor
  • Lube System
    • Fumes disposal
    • Oil filter, filler and dipstick
    • Gear type lube oil pump
    • Oil drain lines and valve
    • Lubricating oil
    • Integral lube oil cooler
    • Fumes disposal
    • Oil drain lines and valve
    • Lubricating oil
    • Integral lube oil cooler
    • Oil filter, filler and dipstick
    • Gear type lube oil pump
  • Mounting System
    • Rubber anti-vibration mounts (shipped loose)
    • Rails - engine / generator / radiator mounting
    • Rubber anti-vibration mounts (shipped loose)
    • Rails - engine/generator/radiator mounting
  • Starting / Charging System
    • Battery disconnect switch
    • Battery and battery rack w/cables
    • 24-volt electric starting motor
    • Battery disconnect switch
    • 24-volt electric starting motor
    • Battery and battery rack w/cables
  • General
    • Flywheel and Flywheel housing-SAE No. 00
    • SAE Standard Rotation
    • RH Service
    • Paint - Caterpillar Yellow with high gloss black rails & radiator
    • RH Service
    • Flywheel and Flywheel housing-SAE No. 00
    • Paint - Caterpillar Yellow with high gloss black rails & radiator
    • SAE Standard Rotation

Optional Equipment:

  • Engine Options
    • Batteries: [ ] Standard (1400 CCA) [ ] Heavy Duty (2800 CCA)
    • Muffler: [ ] Industrial Grade
    • Battery Charger: [ ] 10A [ ] 20A [ ] 35A
    • Starting Motors: [ ] Standard [ ] Heavy Duty
    • Starting Aids: [ ] 220V 50 Hz Jacket Water Heater
  • Air Inlet System
    • Air Inlet protection
    • Remote air inlet adaptors
    • Dual Element air cleaners
    • Dual Element air cleaners
    • Air Inlet protection
    • Remote air inlet adaptors
  • Circuit Breakers
    • Busbar connections
    • Controls packaging - Enclosures
    • EMAX circuit breakers
    • Optional busbar power connections
    • Center posts busbars
    • 2000, 2500, 3200 and 4000 Amp, 3 pole, IEC rated circuit breakers
    • EMAX breakers connections
    • Cable entry options
    • 2000, 2500, 3200 and 4000 Amp, 4 pole, IEC rated circuit breakers
    • Breaker harnesses
    • EMAX breakers connections
    • 2000, 2500, 3200 and 4000 Amp, 3 pole, IEC rated circuit breakers
    • Center posts busbars
    • Controls packaging - Enclosures
    • 2000, 2500, 3200 and 4000 Amp, 4 pole, IEC rated circuit breakers
    • Cable entry options
    • Optional busbar power connections
    • Busbar connections
    • Breaker harnesses
    • EMAX circuit breakers
  • Control System
    • Controller: [ ] EMCP 4.2 [ ] EMCP 4.3 [ ] EMCP 4.4
    • Local annunciator module: [ ] NFPA 110 [ ] Custom
  • Alternators
    • Temperature Rise (over 40°C ambient): [ ] 150°C [ ] 125°C [ ] 105°C [ ] 80°C
  • Control Panels
    • Auxiliary boxes
    • Generator temperature monitoring
    • EMCP 4.3, EMCP 4.4
    • Customer connection mounting locations
    • Customer interface options
    • Mounting group - External box clips
    • Local PC monitoring
    • Annunciator modules
    • Governors
    • Ground (Automatically selected)
    • Vandle proof panel door
    • Remote speed adjust
    • Governors
    • Local PC monitoring
    • Ground (Automatically selected)
    • Auxiliary Boxes
    • Vandle proof panel door
    • Remote speed adjust
    • Customer Interface Options
    • Mounting Group - External Box Clips
    • Customer connection mounting locations
    • Generator Temperature Monitoring
    • EMCP 4.3
    • EMCP 4.4
  • Cooling System
    • Water level switch gauges
    • Optional radiator arrangements
    • Heat exchangers
    • Optional radiator arrangements
    • Water level switch gauges
    • Heat exchangers
  • Power Termination
    • Power Termination: [ ] Bus Bar [ ] Circuit Breaker
    • Circuit Breaker rating: [ ] 2000A [ ] 2500A [ ] 3200A [ ] 4000A
    • Circuit breaker operation: [ ] Electrical
    • Circuit breaker trip unit: [ ] LSI [ ] LSIG [ ] LSIG-P
  • Extended Service Contract (esc)
    • Extended Service Contract (ESC): [ ] 2 Year [ ] 3 Year [ ] 5 Year
  • European Certifications
    • European Union Certification
    • Eurasian conformity (EAC) mark
    • EU declaration of conformity
    • European directive genset, DoI (Declaration of Incorporation)
    • Eurasian conformity (EAC) mark
    • European Union Certification
    • European directive genset, DoI (Declaration of Incorporation)
    • EU declaration of conformity
  • Exhaust System
    • Through-wall installation kit
    • Mufflers
    • Flexible fittings
    • Muffler mounting kits
    • Through-wall installation kit
    • Muffler mounting kits
    • Mufflers
    • Flexible fittings
  • Fuel System
    • Primary fuel filter
    • Primary fuel filter
  • Generators And Attachments
    • 1500 RPM, 380/400/415volts @ 50 Hz, 3 phase, form wound, permanent magnet, No. of leads = 6, pitch= 0.6667
    • Space heater
    • Generator conversion
    • 1500 RPM, 380/400/415volts @ 50 Hz, 3 phase, random wound, internal excitation, No. of leads = 6, pitch= 0.6667
    • 1500 RPM, 380/400/415volts @ 50 Hz, 3 phase, random wound, permanent magnet, No. of leads = 6, pitch= 0.6667
    • 1500 RPM, 380/400/415volts @ 50 Hz, 3 phase, random wound, permanent magnet, No. of leads = 6, pitch= 0.6667
    • Generator conversion
    • 1500 RPM, 380/400/415volts @ 50 Hz, 3 phase, random wound, internal excitation, No. of leads = 6, pitch= 0.6667
    • 1500 RPM, 380/400/415volts @ 50 Hz, 3 phase, form wound, permanent magnet, No. of leads = 6, pitch= 0.6667
    • Space heater
  • Instrumentation
    • Pyrometer and thermocouples
  • Lube System
    • Manual prelube sump pumps
    • Oil level Reg-1 shallow pan
    • Electric prelube pumps
    • Manual prelube sump pumps
  • Mounting System
    • Spring-type vibration isolator
    • IBC vibration isolators
    • IBC vibration isolators
    • Spring-type vibration isolator
  • Protection System
    • Explosion relief valve
    • Explosion relief valve
  • Special Tests / Reports
    • IBC seismic certifications
    • PGS test report @ 0.80 power factor
    • Neutral ground-LV
    • PGS test report @ 1.0 power factor
    • Neutral grounding connection
    • PGS test report @ 1.0 power factor
    • Neutral ground-LV
    • Neutral grounding connection
    • IBC seismic certifications
    • PGS test report @ 0.80 power factor
  • Starting / Charging Systems
    • Ether starting aid
    • 20 Amp battery charger
    • Oversize battery set
    • 10 Amp battery chargers
    • 24 Volt dual electric starting motor
    • Jacket water heaters
    • 24 Volt dual electric starting motor
    • Jacket water heaters
    • Ether starting aid
    • Oversize battery set
    • 10 Amp battery chargers
    • 20 Amp battery charger
  • General
    • Seismic Certification per applicable building codes: IBC 2000, IBC 2003, IBC 2006, IBC 2009, CBC 2007
    • UL 2200 package
    • The following options are based on regional and product configuration:
    • Engine barring group
    • Engine barring group
Renee HerndonRenee Herndon
21:55 29 Feb 24
Dalton was very helpful, The road construction, however, was not! 😂I would rather have to sand paper an alligators @$$ in a phone booth that to get in that mess again.
Michael BirrenMichael Birren
14:58 24 Feb 24
I purchased a used C-15 from a customer of Greg Pool was a running take out. I picked up the engine from the Greg Pool Cat near Nags Head NC. They started they had done all service on this engine stated the hours and all items replaced during the life of engine under their care. I just recently put the engine in my boat after 2 years of building the vessel I find that everything they said about the engine was a LIE!!! Turbo was Bad, After cooler was not updated to the newer version for the C-15 it was missing a terminal Resistor that was clearly stolen off the engine which created a major issue with start up upon installation. Greg Pool Caterpillar stated the hours at 3300 we find out there were 5700 hours. I didn’t do a start up or test run which I regret because i was dealing with a Caterpillar dealer i thought i could trust them. Clearly not Buyers Be Ware if your dealing with Greg Pool Caterpillar in NC. I have 3 of the C-15 engines in my Work boats here in Tampa Fl and my Cat dealership here is Ring power who have done an amazing job to get me going with this Engine. I am very Disappointed in The Caterpillar company for allowing such A dealership to exist.
David LawrenceDavid Lawrence
13:04 22 Feb 24
Brandon PierceBrandon Pierce
22:00 18 Feb 24
Darin NoeDarin Noe
01:17 16 Feb 24
Jose SotoJose Soto
15:26 23 Sep 23
Hunter ElliottHunter Elliott
16:17 07 Sep 23
Rick Kelly-CrapseRick Kelly-Crapse
21:06 25 Aug 23
They had all my parts for my 3208 Cat.Friendly folks at parts counter.
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