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Overview

Producing reliable power from 135 to 218 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.

Generator Set Specifications

Units:
Minimum Rating 135 kVA 135 kVA Less
Maximum Rating 218 kVA 218 kVA Less
Emissions/Fuel Strategy Non Regulated, EU Stage IIIA Non Regulated, EU Stage IIIA Less
Voltage 110 to 480 Volts 110 to 480 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 Cat® C7.1 Cat® C7.1 Less
Bore 4.1 in 105.0 mm Less
Stroke 5.3 in 135.0 mm Less
Displacement 427.8 in³ 7.0 l Less
Compression Ratio 16.0:1, 18.2:1 16.0:1, 18.2:1 Less
Aspiration Turbocharged, Air to Air Aftercooled Turbocharged, Air to Air Aftercooled Less
Fuel System Direct Injection Direct Injection Less
Governor Type Mechanical Mechanical Less

Generator Set Dimensions

Length - Maximum 98.4 in 2500.0 mm Less
Width - Maximum 52.0 in 1320.0 mm Less
Height - Maximum 64.0 in 1626.0 mm Less

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 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

Certifications

Fully prototype tested with certified torsional vibration analysis available

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

C7.1 (50 Hz) Standard Equipment

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

Control Panels
  • 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 valves
  • Radiator and cooling fan with guards

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

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
  • IP23 protection
  • Tower panel, IP22, bottom cable entry
  • 12 leads
  • Voltage regulator (single phase sensing)
  • Circuit breaker, IEC, 3 pole, mounted in tower panel

Governing System
  • Mechanical and electrical governing system - model dependent
  • Mechanical and electrical governing system - model dependent

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

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

Generators and Generator Attachments
  • Tower panel, IP22, bottom cable entry
  • Circuit breaker, IEC, 3 pole, mounted in tower panel
  • IP23 protection
  • 12 leads

Starting / Charging System
  • 24V battery with rack and cables

General
  • Engine and alternator pre-paint, Caterpillar Yellow
  • Engine and alternator pre-paint, Caterpillar Yellow

C7.1 (50 Hz) Optional Equipment

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

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

Control System
  • EMCP 4.2
  • Volt free contacts for common alarm
  • Volt free contacts for generator set running
  • Control panel heater
  • Static battery charger

Control Panel Options
  • Overload shutdown via breaker

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

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

European Certifications
  • Upgrade to STD set for CE

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

Global Certifications
  • Certification for CIS
  • Certification for CIS

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

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

General
  • Stone guards / radiator trans flange

Power Termination
  • Circuit breaker, IEC, 4 pole

Accessories / Miscellaneous
  • Packing case - canopied set
  • Packing case - compact set

Application Centre

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