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Producing reliable power from 6.8 to 9.0 kVA at 50 Hz, our C1.1 diesel generator sets designed to ISO 8528-5 transient response requirements. All C1.1 generator sets are R96/EUIIIa equivalent emissions compliant.

Generator Set Specifications

Minimum Rating 6.8 kVA 6.8 kVA Less
Maximum Rating 9.5 kVA 9.5 kVA Less
Emissions/Fuel Strategy R96/EUIIIa Equivalent R96/EUIIIa Equivalent Less
Voltage 110 to 415 Volts 110 to 415 Volts Less
Frequency 50 Hz 50 Hz Less
Speed 1500 rpm 1500 rpm Less
Duty Cycle Standby, Prime Standby, Prime Less

Engine Specifications

Engine Model C1.1, In-line 4 4-cycle diesel C1.1, In-line 4 4-cycle diesel Less
Bore 3.0 in 77.0 mm Less
Stroke 3.2 in 81.0 mm Less
Displacement 69.0 in³ 1.1 l Less
Compression Ratio 23.0:1 23.0:1 Less
Aspiration Naturally Aspirated Naturally Aspirated Less
Fuel System Indirect Injection Indirect Injection Less
Governor Type Mechanical Mechanical Less

Generator Set Dimensions

Length - Maximum 55.1 in 1400.0 mm Less
Width - Maximum 24.4 in 620.0 mm Less
Height - Maximum 39.2 in 996.0 mm Less

Cat Generator Set Package

  • Cat generator set packages have been fully prototype tested
  • Accepts 100% block load in one step and meetsNFPA 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 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 55°C (131°F)
  • Contact your Cat Dealer for specific ambient and altitude capabilities


Cat Dealers provide extensive post sale support including maintenance and repair agreements. Cat dealers have over 1,800 dealer branch stores operating in 200 countries. The Cat® SOSSM program cost effectively detects internal engine component condition, even the presence of unwanted fluids and combustion by-products.

One Safe Source

  • Components used in the generator set are selected based on seamless design integration to provide the optimum 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

C1.1 (50 Hz) Standard Equipment

Air Inlet System
  • Air cleaner; light duty with disposable element
  • Air cleaner; light duty with disposable element

Control Panel
  • EMCP 4.1
  • EMCP4.1 control panel

Cooling System
  • Radiator and cooling fan with guards
  • Caterpillar extended life coolant
  • Fan drive, battery charging alternator drive
  • Coolant drain line with valve
  • Radiator and cooling fan with guards

Exhaust System
  • Stub pipe, gaskets, raincap & SAE exhaust flange for customer use; shipped loose
  • Stub pipe, gaskets, raincap & SAE exhaust flange for customer use; shipped loose

Fuel System
  • Base, formed steel with single wall integral 8-hour fuel tank
  • Standard open set fuel tank / base supplied
  • Base, formed steel with single wall integral 8-hour fuel tank
  • Standard open set fuel tank / base supplied

Generators and Generator Attachments
  • Tower panel, IP22, bottom cable entry
  • IP23 Protection
  • Circuit breaker, IEC, 3 pole, mounted in tower panel
  • Segregated low voltage (AC/DC) wiring panel
  • 12 Leads
  • Voltage regulator (single phase sensing)
  • Segregated low voltage (AC/DC) wiring panel
  • 12 leads
  • Tower panel, IP22, bottom cable entry
  • IP23 Protection

Governing System
  • Mechanical governing system
  • Mechancial governing system

Lube System
  • Oil drain line with valve
  • Lubricating oil
  • Oil drain line with valve
  • Lubricating oil

Mounting System
  • Captive linear vibration isolators between base and engine-generator
  • Includes lifting provisions and termination points for coolant
  • Skidbase as standard
  • Anti-vibration mounts

Starting / Charging System
  • 12 Volt battery with rack and cables
  • 12V battery with rack & cables

  • Engine and alternator pre-paint, Caterpillar yellow

C1.1 (50 Hz) Optional Equipment

Alternator Options
  • Coastal insulation protection

  • European upgrade to STD set for CE certificate
  • Global certification for CIS

Circuit Breakers
  • Pad-lockable breaker device
  • 4 Pole circuit breaker

Control Panel
  • Volt free contacts for common alarm
  • Battery charger
  • Emergency stop with key
  • EMCP 4.2

Control Pane
  • Volt free contacts for genset running

Cooling System
  • Coolant heater

  • Single point lift for enclosure
  • Sound attenuated enclosure (GALV)

Fuel System
  • Low fuel level alarm

Mounting Options
  • Silencer installation kit
  • Industrial silencer removal
  • Battery removal

Special Test and Inspection
  • PGS test report @1.0 power factor

  • Radiator stone guard
  • Packing case - compact set
  • Packing case - canopied set

Application Center

Explore valuable resources for generator sizing, specification, and training materials. SpecSizer evaluates load types, collects data, and organizes 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.

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