What type of electrical power does the APU generator supply?

The APU generator supplies 115 volts alternating current (VAC), 400 Hz, 3 phase power. This specification is crucial for various aircraft systems since the APU (Auxiliary Power Unit) is designed to provide electrical power and pneumatic pressure while the aircraft is on the ground and when the main engines are not running.

The use of 400 Hz is particularly relevant in aviation as it allows for smaller and lighter electrical components compared to the standard 60 Hz frequency used in most commercial applications. Additionally, the three-phase power is essential for efficient operation of larger electrical loads, such as motors and high-demand aircraft systems.

This configuration ensures that the electrical systems can operate effectively and reliably, which is vital for the functionality of avionics, lighting, and other essential systems on the aircraft. Understanding this power specification helps personnel ensure compatibility and prevent operational issues when integrating or troubleshooting systems powered by the APU generator.