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Overview

Producing reliable power from 120 to 175 ekW at 60 Hz, our C7.1 diesel generator sets designed to ISO 8528-5 transient response requirement. All C7.1 generator sets are available with a choice of emissions levels.

Generator Set Specifications

Units:
Minimum Rating 120 ekW 120 ekW Less
Maximum Rating 175 ekW 175 ekW Less
Emissions/Fuel Strategy Non Regulated Non Regulated Less
Voltage 208 to 480 Volts 208 to 480 Volts Less
Frequency 60 Hz 60 Hz Less
Speed 1800 rpm 1800 rpm Less
Duty Cycle Standby, Prime Standby, Prime Less

Engine Specifications

Engine Model C7.1 I-6, 4-Cycle Diesel C7.1 I-6, 4-Cycle Diesel Less
Bore 4.13 in 105.0 mm Less
Stroke 5.31 in 135.0 mm Less
Displacement 427.8 in³ 7.01 B Less
Compression Ratio 16.5:1 16.5:1 Less
Aspiration Turbocharged, Air to Air Aftercooled Turbocharged, Air to Air Aftercooled Less
Fuel System Common Rail Common Rail Less
Governor Type ADEM™A4 ADEM™A4 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 (60 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
  • Fan drive, battery charging alternator drive
  • Coolant drain line with valves
  • Caterpillar extended life coolant
  • Radiator and cooling fan with guards
  • Radiator and cooling fan with guards

Exhaust System
  • Stub pipe, gaskets, raincap and 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
  • Standard open set fuel tank / base supplied
  • Base, formed steel with single wall integral 8-hour fuel tank

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

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

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

Packaged Generator Set
  • Flexible fuel lines to base NPT connections
  • Standard ambient temperatures up to 50°C (122°F)
  • Radiator and cooling fan complete with protective guards
  • Class H insulation
  • Drip proof generator air intake (NEMA 2, IP23)

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

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

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

C7.1 (60 Hz) Optional Equipment

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

Packaged Generator Set Options
  • Radiator stone guard

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

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

Control Panel Options
  • Volt free contacts
  • Speed adjust potentiometer
  • Battery charger
  • Panel mounted audible alarm
  • Emergency stop with key
  • Speed adjust contacts
  • Overload shutdown via breaker
  • Control panel heater
  • Earth fault (2 wire only)
  • Earth leakage (2 wire only)
  • Speed adjust contacts
  • Battery charger
  • Earth fault (2 wire only)
  • Earth leakage (2 wire only)

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

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

European Certifications
  • Upgrade to STD set for CE

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

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

General
  • Stone guards / radiator trans flange

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

Global Certifications
  • Certification for CIS
  • Certification for CIS

Power Termination
  • Circuit breaker, IEC, 4 pole

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