Question

Function of the DC BUS TIE Switch

Answer 1

The DC BUS TIE switch is used in aircraft to control the connection between the left and right DC buses, ensuring a reliable DC power supply, and can isolate the buses if required.

Step-by-step explanation:

The function of the DC BUS TIE switch in aviation is to control the electrical connection between the left and right Direct Current (DC) buses, which are the primary distribution paths for DC electrical power in the aircraft. When the DC BUS TIE switch is set to AUTO, the system will automatically connect or disconnect the buses as required to ensure a reliable power supply. If there is a failure in one of the generators, the system will tie the buses together to allow the operating generator to power the entire aircraft. On the other hand, if the switch is set to OFF, it isolates the two buses, which might be necessary during abnormal or emergency conditions to protect circuits and prevent further electrical issues.