Selecting the right ground support equipment (GSE) is about more than having enough power to turn over an engine. It’s about matching that power to the specific workflow of your ramp, hangar or remote maintenance station. While the aviation industry is well on its way to electrically powered ground power units (eGPUs), the operational environment determines how that electricity should be delivered.

Do you want a plug-and-play hangar unit, a high-capacity system connected to your existing grid, or total cordless freedom on the apron?

Understanding the different use cases for the three flagship models in the Jetall GPU lineup helps fleet managers and fixed base operators (FBOs) make the right operational investment.

The Infrastructure Extender Jetall Model JTL28TR-400

If you already have a frequency AC centralized power system at 400 Hz or a mobile generator pack at 400 Hz in your facility, you don’t need a standalone engine or a massive battery bank. You need a really efficient bridge to turn that power into clean DC voltage.

Ideal For: Fixed gates, large maintenance bases, and operations with existing 400 Hz AC infrastructure

Performance: This unit is a heavy-duty Transformer/Rectifier (TR) pack with a 30 KVA capacity that converts existing high-frequency AC power to a massive 1000 amps continuous (2200 amps peak starting current).

The Operational Edge is incredibly compact and lightweight, and it requires virtually zero mechanical maintenance because it leverages existing power networks.

Jetall JTL-28R – The Hangar Workhorse

In a closed hangar, air quality and noise control are important. The Jetall JTL28R is a solid-state, plug-in electric powerhouse designed to connect directly to facility wall power.

Best For: Indoor maintenance hangars, avionics test bays, scheduled maintenance of corporate fleets.

How it works: It is connected to standard 3-phase facility power and accepts multiple incoming voltages (208V, 230V, 380V, 460V or 575V) at either 50 Hz or 60 Hz. It easily puts out 1000 amps continuously and a 2400-amp peak start.

The Operational Edge: With soft-start technology and automated line-drop compensation, it ensures that voltage sags are not a result of long cables. It provides a continuous source of clean 28.5V DC power for long-term avionics diagnostics without engine starts or battery drain.

The Jetall JTL28B: The cordless freedom fighter

In traditional operations, when a move-out to a remote tie-down spot, a busy apron, or a runway threshold without electrical outlets was required, noisy diesel units were the default. That whole equation changes with the Jetall JTL28B, a battery-powered device.

Best for: Remote ramp operations, quick-turn flight lines and facilities that want a zero-emission footprint without tethering cables to walls.

How It Performs: It’s powered by a 672 Ah heavy-duty battery bank, and it pumps out 800 amps continuous and a 1,500-amp momentary peak starting current.

The Operational Edge: It allows your crew full mobility. You can tow it anywhere on the airfield and perform multiple turbine or jet engine starts on one charge. You operate in complete silence with no fuel cost.

Which Jetall GPU is Right for Your Operation?

Ground flow optimization is an infrastructure problem. With centralized 400 Hz lines, the JTL28TR-400 optimizes your existing assets. The JTL28R plug-in offers infinite, reliable uptime for heavy indoor maintenance. If mobility is your bottleneck, the JTL28B battery-powered is the cord-cutter.

Technical Details & Consultation

Need help determining the precise load requirements for your regional fleet or corporate aircraft? Contact the Jetall engineering team in Ontario for data sheets, outline drawings, and custom configurations.

E-mail: sales@jetall.com Web site: www.jetallgpu.com

Location Ontario, Canada