Diesel Generator Sets D550 GC

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Key Specs

Maximum Rating
550 ekW
550 ekW
Minimum Rating
550 ekW
550 ekW
Emissions/Fuel Strategy
EPA Stationary Emergency
EPA Stationary Emergency


550 ekW Diesel Generator Set

The D550 GC diesel generator sets were developed to meet your needs in a standby application. Producing reliable power of 550 ekW at 60 Hz, meeting ISO 8528-5 transient response requirements and built to accept 100 percent rated load in one step. Our D550 GC generator sets meet EPA Stationary Emergency (Tier 2) certified emissions requirements.


Saves up to 20% Installed Space

Requires less space for installation; leaves more room for your on-going operations

Weighs up to 18% Less

Easier handling; less structural reinforcement required to support genset weight

Standard 105 or 130°C Alternator Temperature Rise

Meets most all specifications; ensures long alternator life

Product Specifications for D550 GC

Maximum Rating 550 ekW 550 ekW
Minimum Rating 550 ekW 550 ekW
Emissions/Fuel Strategy EPA Stationary Emergency EPA Stationary Emergency
Voltage 480 to 600 Volts 480 to 600 Volts
Frequency 60 Hz 60 Hz
Speed 1800 rpm 1800 rpm
Duty Cycle Standby Standby
Engine Model Cat® C18 In-line 6, 4-cycle diesel Cat® C18 In-line 6, 4-cycle diesel
Bore 5.7 in 145 mm
Stroke 7.2 in 183 mm
Displacement 1106 in³ 18.1 l
Compression Ratio 14.5:1 14.5:1
Aspiration Turbocharged Air-to-Air Aftercooled Turbocharged Air-to-Air Aftercooled
Fuel System MEUI MEUI
Governor Type ADEM™A4 ADEM™A4
Length - Maximum 196.1 in 4980 mm
Width - Maximum 73.4 in 1865 mm
Height - Minimum 79.1 in 2009 mm
Height - Maximum 100.9 in 2563 mm
Dry Weight - Genset (minimum) 8776.6 lb 3981 kg
Dry Weight - Genset (maximum) 11464 lb 5200 kg

D550 GC Standard Equipment

Air Inlet System

  • Air cleaner - Non-Canister, Disposable
  • Aftercooler core
  • Turbocharger

Control Panel

  • GCCP 1.2

Cooling System

  • Jacket water pump, gear driven, centrifugal
  • Radiator, Package mounted.
  • Radiator sight gauge
  • Thermostats and housing.
  • Blower fan and fan drive with guards
  • Coolant drain valve.

Exhaust System

  • Exhaust manifold; dry

Fuel System

  • Fuel priming pump
  • Primary fuel filter w/integral water separator and secondary filter, spin on
  • Engine fuel transfer pump
  • Fuel cooler
  • Integral Tank Base, 24 Hrs, UL142

Generator Set

  • Complete system designed & built at ISO 9001:2000 certified facilities
  • All protective devices and control functions simulated and checked
  • Factory tested to design specifications at full load conditions

Generators and Generator Attachments

  • Insulation, Class H
  • Standard winding protection for non-harsh environments with relative humidity ? 95%
  • Terminal Box, IP22 RHS Facing, Bottom Cable Entry
  • IP23 protection
  • 6 leads
  • Voltage regulator (single phase sensing)
  • Easy access to AVR and terminals
  • Brushless, self-excited 2/3 pitch (600V uses Internal Excitation)

Governing System

  • Cat Electronic Governor (ADEM A4)

Lube System

  • Lubricating Oil, CK-4 (10W-30)
  • Oil cooler
  • Oil drain with valve.
  • Shallow oil pan.
  • Oil filter, spin on.
  • Fumes disposal to front of radiator.
  • Oil filler and dipstick.

Mounting System

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


  • Safety Shutoff - Overspeed
  • Safety Shutoff - Low Oil Pressure
  • Safety Shutoff - High water temperature

Starting/Charging System

  • 24-volt electric starting motor.
  • 24V,45 amp charging alternator.


  • Lifting Eyes
  • Parts Book
  • Vibration damper.

D550 GC Optional Equipment

Air Inlet System

  • Air Cleaner (Non-Canister Disposable)

Bases, Mounting & Fuel Tanks

  • Integral Tank Base, 24 Hrs, UL142
  • Fuel Tank Fill Pipe & Lockable Cap
  • Audio & Visual Fuel Alarm (@90% Fuel Level)
  • 5 gallon Spill Containment
  • Overfill Prevention Valve
  • Wide Base - Skid

Circuit Breaker

  • 400A LS/I
  • 1200A LS/I
  • Auxiliary Contacts
  • 800A LSI
  • 800A LS/I
  • 600A LSI
  • 600A LS/I
  • 400A LSI
  • 1200A LSI

Control System

  • Volt Free Contacts
  • 20A GFCI (Ground Fault Circuit Interrupter)
  • 16 -light NFPA 99/110 Annunciator
  • Twist Release, Red Button Emergency Stop
  • Product Link Remote Monitoring hardware
  • 100A Load Center
  • Ground Fault Relay
  • Audible Alarm Gp
  • Annunciators box
  • Remote E-Stop button
  • Local annunciator
  • Discrete I/O module
  • Volt free contact
  • Earth (Ground) fault relay


  • Sound Attenuated Level 2 Enclosure (White)
  • AC & DC Source Lights
  • E-Stop
  • Sound attenuated enclosure

Exhaust System

  • Flexible Exhaust Connection
  • Manifold & Turbocharger Guards
  • 8" Muffler - 25 dBA Attenuation


  • Space Heater
  • Permanent Magnet Generator

Starting System

  • Standard Battery Set: 1000 CCA, 90 amp/hr.
  • Battery Charger (UL Certified)
  • Jacket Water Heater
  • Oversize Battery Set, 1400 CCA, 200 amp/hr.


  • CSA Certification
  • Extended Service Coverage
  • UL2200 Certification
  • Generator Test Report
  • Tool set

Circuit Breakers

  • Single LSI motorised circuit breaker
  • Auxiliary contacts
  • Neutral bar (208V)

Cooling System

  • Jacket water heater with pump
  • Coolant heater
  • Stone guards

Base / Fuel Tank

  • Audio & visual fuel alarm

Fuel System

  • Integral 8 hr tank base

Starting and Charging

  • Oversize battery set
  • Battery disconnect switch
  • 5 Amp battery charger
  • Standard battery set


  • UL2200 Listed
  • CSA 22.2
  • Seismic

Lube System

  • Manual sump pump

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