Types of failures for ground power units in aviation generally include short circuits, wear and tear, open circuits, over-frequency, under-frequency, over-voltage, under-voltage, overcurrent, and undercurrent.
As automatic control technology continues to evolve, over-frequency and under-frequency faults can be detected and reported for handling in an extremely short time. Any ground power supply is equipped with automatic protection to prevent output from failing to meet the required current or voltage levels. Additionally, over-frequency or under-frequency phenomena will not cause harm or damage to onboard equipment in the short term. The main consequence of a short circuit is power failure, and most onboard equipment generally has power failure protection, resulting in minimal harm. Aviation ground power 2, 36V aviation power 1, 400Hz variable frequency power supply 7, 115/200V power supply 2, 27V DC power supply 5, 400Hz power supply 12, aviation power
Short-circuit phenomena can cause significant damage. Once they occur, they can range from burning and charring connectors and cables to damaging equipment and personnel, even potentially leading to fires. In such cases, immediate response and handling according to emergency procedures are crucial to prevent the situation from escalating. Wear and tear is a common fault and a contributing factor to short-circuit phenomena. The inspection and protection of wear directly impact the quality of ground power maintenance.
