400Hz Ground Power Units (GPU) & Pre-Conditioned Air (PCA) installations at Hamad International Airport (DOH)

This sub-category combines the two halves of the APU-off gate package. Ground Power Units supply electrical power to a parked aircraft: diesel-engine mobile GPUs, battery and hybrid eGPUs, fixed gate-mounted 400Hz solid-state frequency converters, 28.5V DC rectifiers and 270V DC supplies, plus gate boxes, load banks and heavy 400Hz/28V cabling. Pre-Conditioned Air delivers conditioned air to the cabin through a hose to replace the APU's environmental load: diesel and electric mobile PCA carts, fixed bridge-mounted PCA, and aircraft air-conditioning units (ACU) engineered for extreme ambient temperatures. Buyers specify by kVA rating, output type, cooling capacity (tons/kW) and ambient design point; fixed 400Hz plus PCA at the bridge is a core decarbonisation lever, so airports and PBB integrators procure both together.

Hamad International is what happens when a state airline designs its own cathedral. Opened in 2014 and already expanded twice, it serves as Qatar Airways' global spine and routinely tops Skytrax's best-airport rankings. 2024 traffic hit 52.7 million passengers and cargo cleared 2.6 million tonnes — both records. Phase C, now in tender, will lift capacity beyond 70 mppa and add a second passenger processing hall.