< Back

View Product Downloads
Yes, I would like to receive future marketing communications (such as email) from Caterpillar Inc., its affiliates and subsidiaries worldwide and the Caterpillar dealer network. Regardless of whether you decide to receive these marketing communications, Caterpillar will continue to send service/transactional messages, including those that have to do with any accounts that you may have with us.


Producing reliable power from 1000 to 1400 kVA at 50 Hz, our 3512 diesel generator sets are made to meet your mission critical, continuous, standby and prime applications. We've designed each to ISO 8528-5 transient response requirements and to accept 100 per cent rated load in one step. Generator sets offer a low fuel consumption system.

Generator Set Specifications

Minimum Rating 1000 kVA 1000 kVA Less
Maximum Rating 1400 kVA 1400 kVA Less
Emissions/Fuel Strategy Low Fuel Consumption Low Fuel Consumption Less
Voltage 380 to 415 Volts 380 to 415 Volts Less
Frequency 50 Hz 50 Hz Less
Speed 1500 rpm 1500 rpm Less
Duty Cycle Standby, Mission Critical, Prime, Continuous Standby, Mission Critical, Prime, Continuous Less

Engine Specifications

Engine Model 3512 TA, V-12, 4-Stroke Water-Cooled Diesel 3512 TA, V-12, 4-Stroke Water-Cooled Diesel Less
Bore 6.69 in 170.0 mm Less
Stroke 7.48 in 190.0 mm Less
Displacement 3161.03 in³ 51.8 l Less
Compression Ratio 13.5:1 13.5:1 Less
Aspiration TA TA Less
Fuel System Direct Unit Injection Direct Unit Injection Less
Governor Type Woodward Woodward Less

Generator Set Dimensions

Length - Minimum 202.7 in 5149.0 mm Less
Length - Maximum 206.6 in 5249.0 mm Less
Width - Maximum 77.8 in 1975.0 mm Less
Height - Maximum 93.2 in 2367.0 mm Less
Dry Weight - Genset (minimum) 22650.0 lb 10270.0 kg Less
Dry Weight - Genset (maximum) 23170.0 lb 10510.0 kg Less

Cat Generator Set Package

  • Cat generator set packages have been fully prototype tested
  • Accepts 100% block load in one step and meets NFPA 110 loading requirements
  • Conform to ISO 8528-5 steady state and transient response requirements

Cat Diesel Engine

  • Reliable, rugged, durable design
  • Field-proven in thousands of applications worldwide
  • Four-stroke-cycle diesel engine combines consistent performance and excellent fuel economy with minimum weight

SR5 Alternator

  • Superior motor starting capability minimizes need for oversizing alternator
  • Designed to match performance and output characteristics of Cat diesel engines
  • Robust Class H insulation

EMCP 4 Control Panel

  • User-friendly interface and navigation
  • Scalable system to meet a wide range of installation requirement
  • Expansion modules and site-specific programming for specific customer requirements

Cooling System

  • Designed to operate in standard ambient temperatures up to 50°C (122°F)
  • Contact your Cat Dealer for specific ambient and altitude capabilities


  • IBC Seismic Certification
  • EU Declaration of Conformity
  • Eurasian Conformity

One Safe Source

  • Components used in the generator set are selected at the design stage to provide optimum package performance
  • The generator set is fully assembled at a Caterpillar facility following our quality guidelines
  • Each generator set package is tested before leaving the Caterpillar facility
  • Cat product support, including dealer service, parts and warranty covers the entire Cat power system

World Wide Product Support

  • Cat dealers have over 1,800 dealer branch stores operating in 200 countries
  • Your local Cat dealer provides extensive post-sale support, including maintenance and repair agreements

3512 (50 Hz) Standard Equipment

Air Inlet System
  • Air cleaner; single element canister type with service indicator

Control Panel
  • EMCP4.2 controls including: Emergency stop pushbutton
  • Failure to start (overcrank)
  • Accessory module data link
  • Over / under voltage (27 / 59)
  • EMCP4.2 controller including:
  • Engine cycle crank
  • Generator phase sequence
  • Generator mounted - rear facing
  • 2 programmable relay outputs (Form C)
  • Warning/shutdown with common LED indication of shutdowns for:
  • Alarm acknowledge
  • 24-volt DC operation
  • Overcurrent (50 / 51)
  • Reverse Reactive Power (kVAr) (32RV)
  • Communications:
  • Programmable protective relaying functions:
  • Environmental sealed front face
  • Low coolant level
  • Coolant temperature
  • 2 programmable digital outputs
  • Speed adjust
  • Emergency stop
  • Frequency (Hz)
  • 4 programmable relay outputs (Form A)
  • Volts (L-L & L-N)
  • High coolant temperature
  • kVA (per phase, average & percent)
  • Text alarm / event descriptions
  • Controls:
  • True RMS AC metering, 3-phase, +/-2% accuracy
  • Lamp test
  • Digital indication for:
  • Auto / start / stop control
  • kW-hr (total)
  • kVAr (per phase, average & percent)
  • Operating hours
  • Serial annunciator module data link
  • Reverse Power (kW) (32)
  • Oil pressure (psi, kPa or bar)
  • RPM
  • Amps (per phase & average)
  • Power Factor (per phase & average)
  • Engine cool-down timer
  • DC volts
  • Low coolant temperature
  • Over / under frequency (81 o / u)
  • kVAr-hr (total)
  • 6 programmable digital inputs
  • Customer data link (Modbus RTU)
  • Low oil pressure
  • kW (per phase, average & percent)
  • Overspeed

Cooling System
  • Caterpillar extended life coolant. (Not included with packages without radiator, installed SF44CTS, shipped loose radiators or heat exchangers)
  • Coolant drain line with valve
  • Fan and belt guards
  • JWAC
  • Coolant level sensors. (Not included with packages without radiator)
  • Radiator fan and fan drive

Exhaust System
  • Dry Exhaust Manifold
  • Flanged faced outlet(s)

Fuel System
  • Flexible fuel lines - shipped loose
  • Fuel cooler; not included with packages without radiator
  • Fuel priming pump
  • Secondary fuel filters

Generators and Attachments
  • 3 Phase voltage sensing
  • Reactive droop capability
  • Exciter diode monitor
  • Generator set packages include: Regulator (CDVR)
  • 6 Lead
  • KVAR/PF modes
  • Note: 1800 frames are form wound, permanent magnet, with winding temp detectors
  • NEMA Class H insulation
  • Min / max exciter limiter
  • Busbar connections, top center mounted, top cable entry
  • Caterpillar's Digital Voltage Regulator (CDVR) includes:
  • LV:
  • Class H temperature rise at 40C ambient (125C prime/150C standby)
  • Random wound
  • Winding temperature detectors
  • 3 Phase brushless, salient pole
  • RFI suppression
  • Internal Excitation
  • 50 Hz models: IEC standard hole pattern

Governing System
  • Woodward 2301A isochronous governor

Lube System
  • Gear type lube oil pump
  • Oil drain lines and valve
  • Integral lube oil cooler
  • Lubricating oil
  • Oil filter, filler and dipstick
  • Fumes disposal

Mounting System
  • Rubber anti-vibration mounts (shipped loose)
  • Rails - engine/generator/radiator mounting

Starting / Charging System
  • 24 Volt electric starting motor
  • Battery disconnect switch
  • Battery and battery rack w/cables

  • Paint - Caterpillar Yellow with high gloss black rails & radiator
  • SAE Standard Rotation
  • RH Service
  • Flywheel and Flywheel housing - SAE No. 00

3512 (50 Hz) Optional Equipment

Air Inlet System
  • Remote air inlet adaptors
  • Dual Element air cleaners
  • Air Inlet protection

Circuit Breakers
  • Controls packaging - Enclosures
  • Center posts busbars
  • 2000, 2500, 3200 and 4000 Amp, 3 pole, IEC rated circuit breakers
  • Optional busbar power connections
  • Busbar connections
  • Cable entry options
  • Breaker harnesses
  • EMAX circuit breakers
  • 2000, 2500, 3200 and 4000 Amp, 4 pole, IEC rated circuit breakers
  • EMAX breakers connections

Control Panel
  • Customer Interface Options
  • Annunciator Modules
  • Generator Temperature Monitoring
  • Customer connection mounting locations
  • Ground (Automatically selected)
  • EMCP 4.3, EMCP 4.4
  • Vandle proof panel door
  • Local PC monitoring
  • Auxiliary Boxes
  • Governors
  • Mounting Group - External Box Clips
  • Remote speed adjust

Cooling System
  • Heat exchangers
  • Water level switch gauges
  • Optional radiator arrangements

European Certifications
  • Eurasian conformity (EAC) mark
  • European directive genset, DoI (Declaration of Incorporation)
  • EU declaration of conformity
  • European Union Certification

Exhaust System
  • Flexible fittings
  • Mufflers
  • Muffler mounting kits
  • Through-wall installation kit

Fuel System
  • Primary fuel filter

Generators and Attachments
  • Generator conversion
  • 380/400/415volts @ 50 Hz, 3 phase, random wound, internal excitation, No. of leads = 6, pitch= 0.6667
  • 380/400/415volts @ 50 Hz, 3 phase, random wound, permanent magnet, No. of leads = 6, pitch= 0.6667
  • Space heater
  • 380/400/415volts @ 50 Hz, 3 phase, form wound, permanent magnet, No. of leads = 6, pitch= 0.6667

  • Pyrometer and thermocouples

Lube System
  • Manual prelube sump pumps
  • Electric prelube pumps
  • Oil level Reg-1 shallow pan

Mounting System
  • IBC vibration isolators
  • Spring-type vibration isolator

Protection System
  • Explosion relief valve

Special Tests / Reports
  • IBC seismic certifications
  • PGS test report @ 0.8 power factor
  • Neutral grounding connection
  • Neutral ground-LV
  • PGS test report @ 1.0 power factor

Starting / Charging Systems
  • Ether starting aid
  • 24 Volt dual electric starting motor
  • 20 Amp battery charger
  • 10 Amp battery chargers
  • Jacket water heaters
  • Oversize battery set

  • Engine barring group

Application Centre

Explore valuable resources for generator sizing, specification, and training materials. SpecSizer evaluates load types, collects data, and organises it to help you select the generator set that's best for you. Find product comparisons, technical data, product sizing, and more using our technical information portal (TIP) specifically created for consultants, architects, engineers, and owners.

visit page

Why Choose Cat® Electric Power?

Caterpillar offers a comprehensive variety of electric power systems, customised to fit your needs. Our specialised systems deliver high power and performance in industries across the globe. With Caterpillar, you get outstanding manufacturing quality, expert support, and the essential tools and applications to complete any project.

Learn More About Electric Power

EMCP 4 Generator Set Controls

Cat generator sets provide a complete factory-built solution with fully featured standard and advanced controls. Optional accessories enhance the capabilities of the genset package-mounted control system.

Learn More