3512 Generator Set

Electric Power

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.

Specifications
Generator Set Specifications
Height - Maximum 2336 mm 92 in
Length - Maximum 5269 mm 207.5 in
Width - Maximum 2015 mm 79.3 in
Minimum Rating 1000 kVA
Maximum Rating 1400 kVA
Voltage 400 to 415 Volts
Frequency 50 Hz
Speed 1500 rpm
Duty Cycle Continuous, Prime, Standby, Mission Critical

Generator Set Configurations

Emissions/Fuel Strategy Low Fuel Consumption, Low Emissions

Engine Specifications
Engine Model 3512 TA, V-12, 4-Stroke Water-Cooled Diesel
Compression Ratio 13.5:1
Aspiration TA
Governor Type Woodward
Fuel System Direct Unit Injection
Bore 170 mm 6.69 in
Displacement 51.8 l 3161.03 in³
Stroke 190 mm 7.48 in
Air Inlet Single element canister style with service indicator
Exhaust Flange Size 203.2 mm (8.0 in)

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Benefits and Features

Cat Generator Set Package
Cat generator set packages have been fully prototype tested, and certified torsional vibration analysis reports are
available. The packages are designed to accept 100% load in one step, meet the NFPA 110 requirement for
loading, and conform to the ISO 8528-5 steady state and transient response requirements
Cat Diesel Engine
The four cycle Cat diesel engine combines consistent performance with excellent fuel economy and transient
response that meets or exceeds ISO 8528-5. The engines have been designed and built for a wide range of
applications and can be optimized for low fuel consumption or low emissions. The engines feature a reliable,
rugged, and durable design that has been field proven in thousands of applications worldwide from emergency
standby installations to continuously operating power plants.
Generators
The generators used on Cat packages have been designed and tested to work with the Cat engine. The
generators are built with robust Class H insulation and provide industry leading motor starting capability. Random
wound generators provide good generator performance in a majority of applications and form wound is available
for harsh mechanical and electrical environments.
Cat EMCP Control Panel
The EMCP controller features the reliability and durability you have come to expect from your Cat equipment.
EMCP4 is a scalable control platform designed to ensure reliable generator set operation, providing extensive
information about power output and engine operation. EMCP4 systems can be further customized to meet your
needs through programming and expansion modules.
Cooling System
The cooling system has been designed to operate in standard ambient temperatures up to 50°C (122°F), with
optional high ambient radiators available. The factory installed cooling system has been designed and tested to
ensure proper generator set cooling, and includes the radiator, fan, belts, and all guarding installed as standard.
Contact your Cat Dealer for specific ambient and altitude capabilities.
World Wide Product Support
Cat Dealers provide extensive post sale support including maintenance and repair agreements. Cat dealers have
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detects internal engine component condition, even the presence of unwanted fluids and combustion by-products.

Standard Equipment
Air Inlet System
• Air cleaner; single element canister type with service indicator
Control Panel
• EMCP4.2 controls including:
• Emergency stop pushbutton
• 24 Volt DC operation
• Environmental sealed front face
• Text alarm / event descriptions
• Generator mounted - rear facing
• Controls:

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Electric Power

• Speed adjust
• Auto / start / stop control
• Engine cool-down timer
• Engine cycle crank
• Alarm acknowledge
• Lamp test
• True RMS AC metering, 3 phase, +/-2% accuracy
• Digital indication for:
• RPM
• DC volts
• Operating hours
• Oil pressure (psi, kPa or bar)
• Co olant temperature
• Volts (L-L & L-N)
• Frequency (Hz)
• Amps (per phase & average)
• Power Factor (per phase & average)
• kW (per phase, average & percent)
• kVA (per phase, average & percent)
• kVAr (per phase, average & percent)
• kW-hr (total)
• kVAr-hr (total)
• Warning / shutdown with common LED indication of shutdowns for:
• Low oil pressure
• High coolant temperature
• Overspeed
• Emergency stop
• Failure to start (overcrank)
• Low coolant temperature
• Low coolant level
• Programmable protective relaying functions:
• Generator phase sequence
• Over / under voltage (27 / 59)
• Over / under frequency (81 o/u)
• Reverse Power (kW) (32)
• Reverse Reactive Power (kVAr) (32RV)
• Overcurrent (50 / 51)
• Communication:

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Electric Power

• Customer data link (Modbus RTU)

• Accessory module data link
• Serial annunciator module data link
• 6 programmable digital inputs
• 4 programmable relay outputs (Form A)
• 2 programmable relay outputs (Form C)
• 2 programmable digital outputs
Cooling System
• JWAC
• Radiator fan and fan drive
• Fan and belt guards
• Coolant drain line with valve
• Coolant level sensors. (Not included with packages without radiator)
• Caterpillar extended life coolant. (Not included with packages without radiator, installed SF44CTS, shipped
loose radiators or heat exchangers)
Exhaust
• Dry exhaust manifold
• Flanged faced outlet(s)
Fuel System
• Secondary fuel filters
• Fuel cooler; not included with packages without radiator
• Flexible fuel lines - shipped loose
• Fuel priming pump
Generators and Attachments
• 3 Phase brushless, salient pole
• 6 Lead
• Generator set packages include: Regulator (CDVR)
• Caterpillar's Digital Voltage Regulator (CDVR) includes:
• Reactive droop capability
• 3 Phase voltage sensing
• KVAR / PF modes
• RFI suppression
• Min / max exciter limiter
• Exciter diode monitor
• LV:
• Random wound
• Internal Excitation
• NEMA Class H insulation

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Electric Power

• Class H temperature rise at 40C ambient (125C prime/150C standby)

• Winding temperature detectors
• Busbar connections, top center mounted, top cable entry
• 50 Hz models: IEC standard hole pattern
• Note: 1800 frames are form wound, permanent magnet, with winding temp detectors
Governing System
• Woodward 2301A isochronous governor
Lube System
• Lubricating oil
• Gear type lube oil pump
• Integral lube oil cooler
• Oil filter, filler and dipstick
• Oil drain lines and valve
• Fumes disposal
Mounting System
• Rails - engine / generator / radiator mounting
• Rubber anti-vibration mounts (shipped loose)
Starting / Charging System
• 24-volt electric starting motor
• Battery and battery rack w/cables
• Battery disconnect switch
General
• Paint - Caterpillar Yellow with high gloss black rails & radiator
• RH Service
• Flywheel and Flywheel housing-SAE No. 00
• SAE Standard Rotation

Optional Equipment
Air Inlet System
• Dual Element air cleaners
• Remote air inlet adaptors
• Air Inlet protection
Circuit Breakers
• Optional busbar power connections
• Breaker harnesses
• Center posts busbars
• Cable entry options
• Controls packaging - Enclosures
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• EMAX circuit breakers

• 2000, 2500, 3200 and 4000 Amp, 3 pole, IEC rated circuit breakers
• 2000, 2500, 3200 and 4000 Amp, 4 pole, IEC rated circuit breakers
• Busbar connections
• EMAX breakers connections
Control Panels
• EMCP 4.3, EMCP 4.4
• Customer connection mounting locations
• Annunciator modules
• Governors
• Mounting group - External box clips
• Auxiliary boxes
• Customer interface options
• Generator temperature monitoring
• Remote speed adjust
• Vandle proof panel door
• Local PC monitoring
• Ground (Automatically selected)
Cooling System
• Optional radiator arrangements
• Water level switch gauges
• Heat exchangers
European Certifications
• European Union Certification
• EU declaration of conformity
• Eurasian conformity (EAC) mark
• European directive genset, DoI (Declaration of Incorporation)
Exhaust System
• Mufflers
• Muffler mounting kits
• Flexible fittings
• Through-wall installation kit
Fuel System
• Primary fuel filter
Generators and Attachments
• 1500 RPM, 380/400/415volts @ 50 Hz, 3 phase, random wound, internal excitation, No. of leads = 6, pitch=
0.6667

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• 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, form wound, permanent magnet, No. of leads = 6, pitch=
0.6667
• Generator conversion
• Space heater
Instrumentation
• Pyrometer and thermocouples
Lube System
• Oil level Reg-1 shallow pan
• Electric prelube pumps
• Manual prelube sump pumps
Mounting System
• Spring-type vibration isolator
• IBC vibration isolators
Protection System
• Explosion relief valve
Special Tests / Reports
• Neutral grounding connection
• Neutral ground-LV
• PGS test report @ 1.0 power factor
• PGS test report @ 0.80 power factor
• IBC seismic certifications
Starting / Charging Systems
• 10 Amp battery chargers
• 20 Amp battery charger
• Oversize battery set
• 24 Volt dual electric starting motor
• Ether starting aid
• Jacket water heaters
General
• Engine barring group

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Dimensional Art

Dimensions Dimension 1 Dimension 2 Dimension 3

Genset dimensions 5656 mm (222.7 in) 1975 mm (77.8 in) 2367 mm (93.2 in)

The International System of Units (SI) is used in this publication. CAT, CATERPILLAR, their
respective logos, ADEM, EUI, S•O•S, "Caterpillar Yellow" and the "Power Edge" trade dress, as well
as corporate and product identity used herein, are trademarks of Caterpillar and may not be used
without permission.

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