Diesel engine driven GPU series APA is designed to supply electrical equipment onboard aircraft and helicopters with constant voltage 28,5V (up to two output channels) and three-phase alternating 3x115V frequency 400Hz (up to three output channels). These GPUs have diesel generator sets, providing a three-phase AC input voltage 3x400V for rectifiers EAR and frequency converters EAC. The diesel generator unit and unit conversion equipment mounted on a single frame, which, in turn, is mounted on a truck chassis.
An additional 3-rd output with 400Hz 36V of power up to 10kW can be designed in a power supply unit. An energy intermediate unit ensures a smooth load variation to the diesel-generator. It means, that you get high stability of output voltage and fixed frequency 400Hz+-0,01% at any unstable load level.
There is an additional output of standard voltage 50/60Hz. The customer can perform the complete service of aircrafts at remote parking plots with the possibility to supply power of common loads with standard voltage 50/60Hz without having to buy additional equipment. This saves time and simplifies service processes at remote parking places.