GEN 1 switch selected ON.

  • The left Generator Breaker closes connecting
    the number 1 IDG to its respective Transfer
    Bus.

  • The left GEN OFF BUS light extinguishes
    indicating that the number 1 IDG is powering
    its respective Transfer Bus.

  • The right GEN OFF BUS light is illuminated
    indicating that the number 2 IDG has not yet
    been selected on.

  • The left BTB has opened isolating the APU as
    the power source for Transfer Bus 1.

  • The APU is still powering Transfer Bus 2.
Select
The sequence of bus switching in the Electrical System SGR is for illustrative
purposes only  and is not meant to imply an approved procedure.
Electrical System SGR