Overview
Caterpillar is leading the power generation marketplace with Power Solutions engineered to deliver unmatched flexibility, expandability, reliability, and cost-effectiveness.
Specifications
Units:
| Standby Rating | 1250/1100 ekW |
| Prime Power Rating | 1135/1000 ekW |
| Emissions/Fuel Strategy | Low Fuel Consumption |
Benefits & Features
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
February 10, 2026
Specifications
Units:
| Standby Rating | 1250/1100 ekW |
| Prime Power Rating | 1135/1000 ekW |
| Emissions/Fuel Strategy | Low Fuel Consumption |
| Voltage | 380 to 13800 Volts |
| Frequency | 60 Hz |
| Speed | 1800 rpm |
| Duty Cycle | Standby, Mission Critical, Prime, Continuous |
| Maximum Rating | 1250 ekW |
| Minimum Rating | 890 ekW |
| Engine Model | 3512 TA, V-12, 4-Stroke Water-Cooled Diesel |
| Bore | — |
| Stroke | — |
| Displacement | — |
| Compression Ratio | 13.5:1 |
| Aspiration | TA |
| Fuel System | Direct Unit Injection |
| Governor Type | Woodward |
| Length - Minimum | — |
| Length - Maximum | — |
| Width - Minimum | — |
| Width - Maximum | — |
| Height - Minimum | — |
| Height - Maximum | — |
| Dry Weight - Genset (minimum) | — |
| Dry Weight - Genset (maximum) | — |
Benefits & Features
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
Certifications
- UL 2200 Listed
- CSA
- IBC seismic certification
- OSHPD pre-approval
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
Worldwide 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
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Standard Equipment
- Air Inlet System
- Air cleaner; single element canister type with service indicator
- Air Inlet
- Air cleaner
- Cooling
- Radiator fan and fan drive
- JWAC.
- Exhaust
- Exhaust flange outlet
- Dry exhaust manifold
- Fuel
- Secondary fuel filters
- Primary fuel filter with integral water separator
- Fuel cooler; not included with packages without radiator
- Secondary fuel filters
- Fuel priming pump
- Generator
- IP23 Protection
- Matched to the performance and output characteristics of Cat engines
- Power Termination
- Busbar
- Control Panel
- Accessory module data link
- Features include:
- Over/under voltage (27 / 59)
- Coolant temperature
- Generator phase sequence
- Serial annunciator module data link
- Low coolant temperature
- Low oil pressure
- DC volts
- Over/under voltage (27/59)
- Auto/start/stop control
- Exciter diode monitor
- Failure to start (overcrank)
- 6 programmable digital inputs
- Emergency stop
- Generator mounted - rear facing
- Programmable protective relaying functions:
- Power factor (per phase & average)
- Alarm acknowledge
- DC volts
- kVA (per phase, average & percent)
- Overspeed
- IVR includes:
- RFI suppression
- Emergency stop pushbutton
- Package mounted radiator (except C175)
- Overspeed
- Emergency stop
- kVAr (per phase, average & percent)
- Environmental sealed front face
- Customer data link (Modbus RTU)
- Min / max exciter limiter
- Speed adjust
- Operating hours
- True RMS AC metering, 3-phase, +/-2% accuracy
- Reactive droop capability
- Customizable screens
- Volts (L-L & L-N)
- PLC functionality
- Digital indication for:
- RPM
- High coolant temperature
- Digital indication for:
- kW-hr (total)
- Over/under frequency (81 o / u)
- Low coolant temperature
- 24 Volt DC operation
- kW-hr (total)
- Oil pressure (psi, kPa or bar)
- Warning/shutdown with common LED indication of shutdowns for:
- kVAr-hr (total)
- EMCP 4.2B
- 2 Programmable relay outputs (Form C)
- kVAr-hr (total)
- kW (per phase, average & percent)
- kVAr (per phase, average & percent)
- Engine cool-down timer
- Over/under frequency (81 o/u)
- Engine cool-down timer
- True RMS AC metering, 3-phase, +/-2% accuracy
- Low coolant level
- Frequency (Hz)
- Controls:
- Generator phase sequence
- High coolant temperature
- Communications:
- Reverse power (kW) (32)
- Volts (L-L & L-N), frequency (Hz)
- Alarm acknowledge
- Environmental sealed front face
- Controls:
- Operating hours
- Generator mounted - rear facing
- Power factor (per phase & average)
- kW (per phase, average & percent)
- Programmable protective relaying functions:
- Engine cycle crank
- Reverse power (kW) (32)
- 24 Volt DC operation
- Lamp test
- Text alarm/event descriptions
- Failure to start (overcrank)
- Generator set packages include Caterpillar's voltage regulator (IVR)
- Warning/shutdown with common LED indication of shutdowns for:
- Text alarm/event descriptions
- 4 programmable relay outputs (Form A)
- Lamp test
- Load histogram feature
- Coolant temperature
- Auto/start/stop control
- Overcurrent (50 / 51)
- kVA (per phase, average & percent)
- KVAR/PF modes
- Engine cycle crank
- 3 Phase voltage sensing
- 2 Programmable digital outputs
- Low oil pressure
- Reverse reactive power (kVAr) (32RV)
- EMCP 4 Genset controller
- RPM
- Oil pressure (psi, kPa or bar)
- Amps (per phase & average)
- Low coolant level
- Amps (per phase & average)
- EMCP4.2 controller includes:
- Cooling System
- Radiator fan and fan drive
- Fan and belt guards
- JWAC
- Caterpillar extended life coolant
- Coolant level sensors
- Coolant drain line with valve
- Exhaust System
- Dry exhaust manifold.
- Exhaust flange outlet
- Fuel System
- Fuel cooler; not included with packages without radiator
- Flexible fuel lines - shipped loose
- Secondary fuel filters
- Fuel priming pump
- Generators and Attachments
- LV
- Winding temperature detectors
- 3 phase brushless, Salient pole
- 1800 Frames are Form wound, Permanent magnet excitation (PMG), with winding temperature detectors
- NEMA Class H insulation system, Class H temperature rise at 40C ambient (125C prime/150C standby)
- Generator set packages include Caterpillar's digital voltage regulator (CDVR)
- CDVR includes reactive droop capability, 3-phase voltage sensing, KVAR/PF modes, RFI suppression, min/max exciter. Limiter and exciter diode monitor
- 6 Lead
- Internal excitation (IE)
- Busbar connections, top center mounted, top cable entry. 50 Hz models: IEC standard hole pattern
- Random wound
- Governing System
- Woodward 2301A isochronous governor
- Lube System
- Integral lube Oil cooler
- Oil filter, filler and dipstick
- Oil drain lines and valve
- Fumes disposal
- Gear type lube oil pump.
- Lubricating oil
- Mounting System
- 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
- Generator and Attachments
- Random wound
- LV
- 6 Lead
- 3 phase brushless, Salient pole
- General
- Right hand servicing
- Caterpillar yellow with high gloss black rails & radiator
- Flywheel and Flywheel housing-SAE No. 00
- SAE standard rotation
- Paint - Caterpillar yellow except rails and radiators gloss black
Optional Equipment
- Exhaust
- Exhaust mufflers <!--(except Tier 4)-->
- Air Inlet System
- Air inlet protection
- Air cleaner - Dual element
- Remote air inlet adapters
- Generator
- Oversize and premium generators
- Internal excitation (IE)
- Permanent magnet excitation (PMG)
- Anti-condensation heater
- Circuit breakers
- Breaker harnesses
- EMAX breaker connections
- EMAX breakers
- Enclosures - Control packaging
- Cable entry options
- Low voltage, IEC standard hole
- Optional busbar power connections
- Busbar connections
- Power Termination
- Circuit breakers, IEC compliant
- Circuit breakers, UL listed
- Control Panels
- Annunciator modules
- Customer interface options
- Auxiliary box
- Mounting group - External box clips
- Governors
- Generator temperature monitoring
- Cooling System
- Heat exchangers
- 3512 MUI 1500 Radiators PGS
- Water level switch gauges
- Mounting
- Spring type vibration isolators
- IBC isolators
- Rubber anti-vibration mounts
- Certificates
- EU Declaration of Conformity
- Eurasian Conformity (EAC) mark
- European union certification
- European Directive genset, DoI (Declaration of Incorporation)
- Starting/Charging
- Jacket water heater
- Battery chargers
- Charging alternator
- Heavy duty starting system
- Oversize batteries
- Air starting motor with control and silencer
- Exhaust System
- Flexible fittings
- Mufflers
- Through wall installation kit
- Fuel System
- Primary fuel filter
- Generators and Attachments
- Space heater kit
- Generator conversions - IE and PM
- Instrumentation
- Pyrometers
- Lube System
- Oil level reg-1 shallow pan
- Manual prelube sump pumps
- Electric prelube pumps
- Mounting System
- Vibration isolator options
- Protection System
- Explosion relief valves
- Special Tests / Reports
- PGS Test report @ 0.8 power factor
- Neutral ground - LV
- PGS Test report @ 1.0 power factor
- IBC seismic Certification
- Neutral grounding connection
- Starting / Charging System
- Battery chargers (10 and 20 amp)
- Battery sets - 24 Volt, dry
- Electric starting motors - Dual 24 Volt
- Charging alternators
- Jacket water heaters
- Starting aids
- General
- Integral & sub-base fuel tanks
- Enclosures: Sound attenuated, weather protective
- Engine barring group - installed
- Seismic Certification per applicable building codes: IBC 2000, IBC 2003, IBC 2006, IBC 2009, CBC 2007
- CSA Certification
- Integral & sub-base UL listed dual wall fuel tanks
- The following options are based on regional and product configuration:
- Automatic transfer switches (ATS)
- UL 2200 package
- EU Certificate of Conformance (CE)
- EEC Declaration of Conformity
Related Products
Units:
Switchgear and Paralleling Controls
Generator switchgear controls, protects and isolates electrical equipment. Our paralleling switchgear is available in low-voltage, medium-voltage, and high-voltage configurations to automatically start, synchronize and parallel generators with the load.
| Model | Configuration | ||
|---|---|---|---|
| Cat Switchgear | IP4X | 35 °C / 40 °C @ 1 hr, option for 0…50 °C (32…122 °F) | 600 mm for ABB Emax2 E2 1600 - 2500A. 750 mm for ABB Emax2 E4 3200 - 4000A. 1200 mm for ABB Emax2 E6 4000 - 6300A. |