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Ground support equipment (GPU)

Ground support equipment (GPU)

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Short Description

Ground Power Units (GPU) for aerospace, electronic systems, and airports

When parked on the ground, an aircraft cannot normally use 50Hz (or 60Hz in the US) power, as it requires a power source with a frequency of 400Hz. Therefore, tn airport needs specialized equipment to support ground operations, also known as ground power units (GPU), to allow aircraft to operate while on the ground. Product of  our compact size, comparable to a frequency converter/inverter, allows it to be fixed onto the frame of a passenger boarding bridge, or hung beneath a walkway, or simply mounted at a convenient location near the aircraft.

The advantage of GPUs is that they do not emit noise and air pollution like APU turbine generators. Our ground power unit is connected to the normal grid power supply and provides an output of 200V 3-phase 400 Hz for aircraft power via a special flexible cable. The converter is only turned on when the aircraft needs power; it also has a built-in feature that allows synchronized conversion with the aircraft's lighting system, air conditioning system, and other electronic systems to continue operating while the aircraft lands.



The "Point of Use" ground power system is highly energy-efficient, as the converter is only switched on when needed and is more flexible than the previous-generation equipment of the old centralized 400Hz airport systems. Large converter units operate in parallel with continuous power from power supply anticipated for an airport apron to connect to the distribution networks. Our new product goes a step further - we can now offer a dual system built into a single product with two 90kVA output circuits to serve the new generation of wide-body aircraft that can receive power via two cables from a single location.

We can also supply a combined system in a single product with one 200V 400Hz 3-phase output and a secondary output of 28V DC 600Amps with a maximum current of 2000A, for helicopter engine starting and battery charging, in a compact vertical configuration sized to be installed in a maintenance hangar or on the aprons of an airport, combined units can also be built in horizontal formats to be mounted under the passenger boarding bridge and operate in combination with our automatic cable reel unit.

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  • Specifications
    • MODELS GPU30 GPU45 GPU60 GPU90 GPU120 GPU200
      INPUT
      Nominal voltage 3Phase 200VAC/400VAC/480VAC
      Voltage tolerance ± 15%
      Nominal frequency 45Hz to 65Hz ±5%
      Input current harmonics < 3% at full load (sinusoidal)
      OUTPUT
      Nominal power (kVA) 30 45 60 90 120 200
      Active power (kW) 30 45 60 90 120 200
      Voltage 200VAC 3 phase (other voltages available on request)
      Static regulation 0 -100% load ±1%
      Dynamic regulation 100% ±5%, recovering to 1% within 40 millisecond
      Frequency 400Hz
      Frequency stability ±0.01% Crystal controlled
      Overall Efficiency 87% – 95%
      Max crest max 3 : 1
      RECTIFIER
      AC Voltage Range -25%  +10%
      Efficiency 93% - 97%
      Input Frequency Deviation ± 5%
      Overload capacity 120% continuous
      Current walk in 5 seconds to maximum
      Overall current limits 120%
      INVERTER
      Total harmonic distortion < 3% linear load
      Overload 120% for 60s, 150% for 5s, 200% for 2s
      Waveform Sinusoidal
      Load power factor 0.7 - 1
      Efficiency 93% - 98%
      INFO FOR INSTALLATION
      DIMENSION (WxDxH) mm 700 x 750 x 1250 700x800x1575 1600x1000x2000
      Remote signal Dry contact
      Ethernet connection Standard with NetAgent
      CAN (with Remote Panel) Optional
      Temperature range at sea level  - 400C to + 550C (full load)
      300C at 2000m (full load)
      Relative humidity < 90%
      Noise level < 65dbA at 1meter
      IP rating IP20 (IP42, IP54 optional)
      Altitude Up to 2500m
      Standards DFS400; ISO 6858; BS 2G 219; MIL-STD-704; SAE ARP 5015; EN62040-1-1;            EN61558-2-6;En61000-6-4; EN61001-6-2

      - Civil airports
      - Military airports