What are the rated voltage and current specifications for the TRU?

The rated voltage and current specifications for the Transformer Rectifier Unit (TRU) are critical in ensuring the proper operation of various electrical systems in aviation. The correct specifications reflect the ideal balance necessary for efficient power supply conversion from AC to DC, which is crucial for avionics and other systems that require specific voltage levels.

The TRU operates at 28 volts DC, which is standard for many aviation electrical systems that require a reliable DC supply. Additionally, it also manages 115 volts AC, which aligns with the typical voltage level supplied in aircraft for various components and systems. The current rating of 120 amps ensures that the TRU can adequately handle the demand from connected systems without overheating or becoming overloaded.

This combination of rated voltage and current ensures that the TRU can support essential systems, maintaining their functionality during operations, especially in critical situations. Understanding these specifications helps in troubleshooting and ensuring that any replacements or repairs maintain compatibility with existing aircraft systems.