180CU20 – Hobart Ground Power Unit – 400Hz AC, 180kVA

180CU20 Hobart Ground Power Unit – Clean, Reliable Power & Efficient Design:

180CU20 Hobart Ground Power Unit

The 180CU20 offers an innovative cooling system, designed to operate within the engine installation requirements to meet all engine emission standards, and a digital “SENTRY” control system providing a comprehensive approach to ground power control, trouble shooting and service tracking. The low profile design, and 5th wheel steering, provides superior visibility and maneuverability in today’s congested ramp areas.

This 180CU20 Hobart GPU features the Cummins QSL8.9 electronic diesel engine and the Hobart ground power designed and manufactured dual bearing generator. Integrating customer influenced design, innovative technology, and Hobart’s years of engineering expertise maximizes the GPU performance and maintains the traditional Hobart standard of durability and reliability. Hobart Ground Power is your Total Systems Provider for reliable 400 Hz AC power.

180CU20 Performance Features:

  • Low Emission Certified Engine (Tier 3)
  • Noise “Isonorized” design which includes a noise reduction kit
  • Large corrosive free fuel tank (125 gallon) and low fuel warning shutdown are standard
  • Delayed stop (for turbo protection) and emergency shutdown are standard
  • Hobart designed and manufactured dual bearing generator offers long life and reliability
  • Numbered, color-coded wiring remains traceable for the life of the unit
  • Towbar activated braking system
  • Superior frequency & voltage regulation
  • Lift-off doors and removable panels provide complete access to engine, generator and control compartments
  • 10 hour run time at full load
  • Lost Neutral Detection
  • 30 ft. (9 m) output cable (AC and DC)

180CU20 Specifications

180CU20 Engine

  • Cummins QSL8.9 diesel engine operating at 2000 RPM
  • Turbocharged 4-stroke, inline 6 cylinder, charge air cooled
  • Full application approval by Cummins Engine Co., Inc.
  • 12 VDC battery system
  • Electronic governor system (via the engine’s ECM)
  • Intake manifold pre-heater for cold weather starting

180CU20 Engine Protection

  • Low oil pressure shutdown
  • High coolant temperature shutdown
  • Low fuel level shutdown
  • Intake air restriction indication

180CU20 Performance

  • Continuous Rating: 180kVA, 3 phase, 4 wire, 115/200 volt Wye
  • Meets or exceeds both SAE ARP5015A and MIL-STD-704F electrical power quality requirements
  • Line drop compensation assures proper voltage at aircraft plug

180CU20 Protective Finish

  • Preparation – Components are put through a 5 stage acid wash, rinse and sealer wash system
  • Primer Coat – Zinc rich primer which has been proven to handle 6000 hours of salt spray testing
  • Top Coat – Reliable anti-corrosive polyester powder provides excellent weather resistance, flexibility and adhesion, plus a strong resistance to chemical agents such as, diesel fuel, oils, glycol and de-icing fluids
  • Standard colors are high gloss white on sheet metal and a textured black frame and chassis
  • Custom colors are available and require a paint chip or color swatch for accurate color match

180CU20 Displays / Instrumentation

Engine Operation
      • Meters: coolant temperature, battery voltmeter, hour meter, oil pressure, fuel level
      • Buttons: engine start, engine stop, panel lights, pre-heater
Generator Output
      • Meters: frequency, ammeter, voltmeter
      • Buttons: phase select, output contactor control, fault reset
Fault Code Display
    • Engine Faults: air cleaner restriction, high coolant temperature, low oil pressure, low fuel warning, low coolant
    • Generator Faults: over-frequency, under-frequency, overload, over-voltage, under-voltage

180CU20 Environmental

  • Operating Temperature: -25° F to +125° F (-31° C to + 52° C)
  • Relative humidity 0-100% non-condensing
  • No altitude derating required up to 10,000 feet, when running in normal operating range

180CU20 Electrical Characteristics

  • Voltage Regulation: ± 1% no load to full load
  • Voltage adjustment is ± 15 volts
  • Line Drop Compensation: Automatic up to 5%
  • Individual Harmonic Distortion: <2% of the fundamental (RMS) voltage
  • Total Harmonic Distortion: <3% of the fundamental (RMS) voltage
  • Voltage Transients meet MIL-STD-704F and SAE ARP5015A
  • Phase voltage balance not to exceed 1% on a 3-phase balanced load and does not exceed 4% with 1/3 unbalanced load
  • Frequency Regulation: ± 2 Hz steady rate
  • Frequency Transients meet MIL-STD-704F and SAE ARP5015A

180CU20 Generator Protection

  • Per MIL-STD-704F and SAE ARP5015A
  • Over-voltage: disconnect output between 124 to 126 volts in 1 second an instantaneous disconnect at 180 volts L-N
  • Under-voltage: disconnects output below 104 volts L-N in 7 seconds
  • Over-frequency: disconnects output above 420 Hz in 5 seconds
  • Under-frequency: disconnects output below 380 Hz in 7 seconds

180CU20 Generator Overload

  • >125% rated load for 5 minutes, >150% for 30 seconds, >200% for 10 seconds, >210% for 2 seconds
  • Individual outputs: 325 amps, 5 minutes

180CU20 Available Options

  • Internal 28.5 VDC Transformer-Rectifier (600 A continuous, 2000 A peak)
  • Block heater kit (120 V / 60 Hz or 240 V / 50 Hz)
  • Automatic towbar height stop
  • Hand Activated Brakes
  • Pintle or Pin Hitch
  • Cable tray rollers
  • Spot light
  • Fixed or truck mounted configurations
  • Battery blanket (120 V / 60 Hz)
  • Indicator beacons (low fuel and operating)
  • Clearance Lights
  • CE Marking/Certification
  • Special Paint Color on Request
  • Stainless Steel Fuel Tank
180CU20 Specifications
Type kVA KW Outputs Engine Model HP Size ( L x W x H ) Unit Weight
Trailer 180 144 2 QSB8.9 325 156.5 L x 76.13 H x 77 W in
3975 x 1934 x 1956 mm
7,500 lbs (3401 kg)