Fixed and Semi-Mobile Combination Units – 400Hz and 28VDC

RBC8000/28 Fixed and Semi-Mobile GPU’s – Ground Power Unit / 28V DC Combined with 30KVA, 45KVA, 60KVA AND 90KVA

Our RBC8000/28 Ground Power Units deliver an output of 200V 3 phase 400 Hz and 28V DC to the aircraft through a SINGLE or DUAL OUTPUT contactor and can be connected to a standard 380V to 415V 3 phase 50Hz mains or other.

The RBC8000/28 GPUs can support AC and DC power output simultaneously as long as the total load power does not exceed the power of the unit.

RBC8000/28 Ground Power Units use High frequency IGBT Technology (Rectifier and inverter) to guarantee a sinewave input with low THDi (THD‹1.5%) and unit power factor (PF=1), perfect for civil airports and military applications as we guarantee a minimum impact on the mains or other power sources upstream.  The RBC8000’s highly reliable, very efficient and easy to operate and maintain. Our GPU (Ground Power Units) use double conversion technology with an integrated inverter output transformer to ensure galvanic isolation of the load.

The Red Box RBC8000/28 units come supplied as standard with a 10m Input cable and a 10m output cable, with control and signalling wires and aircraft connector. Other cable lengths are available on request.

Our combination units come with either of the following 28V DC options; 300A continuous and 1200A peak or 600A continuous and 2000A peak.

The units come as standard ready to be fixed in place, alternatively you can order these units with a set of caster wheels ideal for moving around the hanger.

Contact Red Box Aviation today to learn more about our semi-mobile and fixed 30KVA, 45KVA, 60KVA and 90KVA frequency converters and we will be happy to help.


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CE Mark


  • DFS400 – Specification for 400 Hz aircraft power.
  • ISO 6858-1982 – Aircraft – Ground support electrical supplies – General requirements.
  • BS 2G 219:1983 – Specification for general requirements for ground support electrical supplies for aircraft.
  • MIL-STD-704F:2004 – Aircraft Electric Power Characteristic.
  • SAE ARP 5015A:2003 – Ground Equipment – 400 Hertz Ground Power Performance Requirements.
  • IEC 62040-1:2008 – Uninterruptible power systems (UPS). Part 1: General and safety requirements for UPS.
  • IEC 61558-2-6:2009 – Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1100 V. Part 2-6: Particular requirements and tests for  safety isolating transformers and  power supply units incorporating safety isolating transformers.
  • IEC 61000-6-4:2006+AMD1:2010 – Electromagnetic compatibility (EMC). Part 6-4: Generic standards – Emission standard for industrial environments.
  • IEC 61000-6-2:2016 – Electromagnetic compatibility (EMC). Part 6-2: Generic standards – Immunity for industrial environments.