C1.1 (50 Hz)

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

Engine Specifications

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

Generator Set Dimensions

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

Design Criteria

  • The generator set is designed to meet ISO8528-5 transient response and NFPA 110.
  • Cooling system designed to operate in 50˚C / 122˚F ambient temperatures with an air flow restriction of 0.5 in. water.
  • 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
  • Generator

  • Matched to the performance and output characteristics of Cat engines
  • Industry leading mechanical and electrical design
  • Industry leading motor starting capabilities
  • High Efficiency
  • IP23 Protection
  • Cat EMCP Control Panel

    The EMCP controller features the reliability and durability you have come to expect from your Cat equipment. EMCP 4 is a scalable control platform designed to ensure reliable generator set operation, providing extensive information about power output and engine operation. EMCP 4 systems can be further customized to meet your needs through programming and expansion modules. The EMCP4.1 is fitted as standard.

    Single-Source Supplier

    Fully prototype tested with certified torsional vibration analysis available

    World Wide Product Support

    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.


  • Single wall 8 hour fuel tank.
  • Circuit breaker, IEC, 3 pole.
  • Industrial Silencer (10dBA)
  • C1.1 (50 Hz) Standard Equipment

    Air Inlet System

    • Air cleaner; light duty with disposable element

    Control Panel

    • EMCP 4.1

    Cooling System

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

    Exhaust System

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

    Fuel System

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

    Generators and Generator Attachments

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

    Governing System

    • Mechanical governing system

    Lube System

    • Lubricating oil
    • Oil drain line with valve

    Mounting System

    • Captive linear vibration isolators between base and engine-generator
    • Includes lifting provisions and termination points for coolant

    Starting / Charging System

    • 12 Volt battery with rack and cables


    • Engine and alternator pre-paint, Caterpillar yellow

    C1.1 (50 Hz) Optional Equipment

    Alternator Options

    • Coastal insulation protection


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

    Circuit Breakers

    • 4 Pole circuit breaker
    • Pad-lockable breaker device

    Control Panel

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

    Control Pane

    • Volt free contacts for genset running

    Cooling System

    • Coolant heater


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

    Fuel System

    • Skidbase for open sets
    • Skidbase for enclosures
    • DEFRA bunded fuel tank
    • Low fuel level alarm
    • Fuel transfer control
    • 1000 hr extended service interval
    • Base feet

    Mounting Options

    • Battery removal
    • Industrial silencer removal
    • Silencer installation kit

    Special Test and Inspection

    • PGS test report @1.0 power factor


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

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