C7.1 (50 HZ) | 135-220 kVA Diesel Generator

Diesel Generator Sets C7.1 (50 Hz)

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Key Specs

Maximum Rating
220 kVA
220 kVA
Minimum Rating
135 kVA
135 kVA
Emissions/Fuel Strategy
Non Regulated, EU Stage IIIA
Non Regulated, EU Stage IIIA


135 - 220 kVA Diesel Generator Set

Producing reliable power from 135 to 220 kVA at 50 Hz, our C7.1 diesel generator sets designed to ISO 8528-5 transient response requirements. All C7.1 generator sets are available with a choice of emissions levels.


Suitable for Harsh & Testing environments

Optimised for 5% Lower Fuel Consumption

Longer run times between fuel fills; reduced operating costs

Reliability tested for over 500 Hours

Ensures you can count on emergency power when it is needed

Product Specifications for C7.1 (50 Hz)

Maximum Rating 220 kVA 220 kVA
Minimum Rating 135 kVA 135 kVA
Emissions/Fuel Strategy Non Regulated, EU Stage IIIA Non Regulated, EU Stage IIIA
Voltage 110 to 480 Volts 110 to 480 Volts
Frequency 50 Hz 50 Hz
Speed 1500 rpm 1500 rpm
Duty Cycle Standby, Prime Standby, Prime
Engine Model Cat® C7.1 Cat® C7.1
Bore 4.1 in 105 mm
Stroke 5.3 in 135 mm
Displacement 427.8 in³ 7 l
Compression Ratio 16.0:1, 18.2:1 16.0:1, 18.2:1
Aspiration Turbocharged, Air to Air Aftercooled Turbocharged, Air to Air Aftercooled
Fuel System Direct Injection Direct Injection
Governor Type Mechanical Mechanical
Length - Maximum 98.4 in 2500 mm
Width - Maximum 52 in 1320 mm
Height - Maximum 64 in 1626 mm

C7.1 (50 Hz) Standard Equipment

Air Inlet System

  • Air cleaner; light duty with disposable element

Control Panels

  • EMCP 4.1

Cooling System

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

Fuel System

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

Exhaust System

  • Stub pipe, gaskets, raincap and SAE exhaust flange for customer use - shipped loose

Generator and Generator Attachments

  • Segregated low voltage (AC/DC) wiring panel
  • Voltage regulator (single phase sensing)
  • Tower panel, IP22, bottom cable entry
  • 12 Leads

Governing System

  • Mechanical and electrical governing system - model dependent

Lube System

  • Oil drain line with valve
  • Lubricating oil

Generators and Generator Attachments

  • IP23 Protection
  • Circuit breaker, IEC, 3 pole, mounted in tower panel

Mounting System

  • Includes lifting provision and drag points
  • Captive linear vibration isolators between base and engine-generator
  • Captive linear vibration isolators between base and engine-generator
  • Termination points for coolant and lube oil drain lines

Starting / Charging System

  • 24V battery with rack and cables


  • Engine and alternator pre-paint, Caterpillar yellow

C7.1 (50 Hz) Optional Equipment

Alternator System

  • 3 Phase sensing
  • Optional LC Frame alternator
  • Optional LC Frame alternator with coastal insulation protection
  • R Frame auxiliary winding: R2273L4 SE aux alt 07, aux alt 08 and aux alt 10
  • Permanent magnet excitation (PMG)
  • Quatrature droop king
  • Alternator removal
  • Anti-condensation heater

Circuit breakers

  • 4 Pole 250A, 400A and 630A Circuit breakers
  • Padlockable breaker device

Control System

  • 1000001235
  • Static battery charger
  • Control panel heater
  • Volt free contacts for common alarm
  • Volt free contacts for generator set running

Control Panel Options

  • Overload shutdown via breaker

Cooling System

  • Low coolant level shutdown
  • Coolant heater
  • Low coolant temperature


  • Rental options (CAE only) - Single point lift
  • Rental options (CAE only) - Rental pack
  • Rental options (CAE only) - CEE form sockets for enclosure
  • Sound attenuated level 2 enclosure
  • Sound attenuated level 1 enclosure
  • Rental options (CAE only) - Socket blanking plate

European Certifications

  • Upgrade to STD set for CE

Fuel Systems

  • Skidbase for CALG enclosure sets
  • Open set narrow tankbase
  • Low fuel level alarm
  • DEFRA bunded fuel tank
  • Low fuel level shutdown
  • High fuel level alarm
  • Compact skidbase for open sets

Global Certifications

  • Certification for CIS

Mounting Options

  • Electronic governor
  • Industrial silencer removal
  • Residential silencer
  • Battery removal
  • Silencer installation kit

Test Reports

  • PGS Test report @ 1.0 power factor
  • PGS Test report @ 0.8 power factor


  • Stone guards/radiator trans flange

Power Termination

  • Circuit breaker, IEC, 4 pole

Accessories / Miscellaneous

  • Packing case - compact set
  • Packing case - canopied set

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