Display Selector
Generator Drive and Standby Power Panel
STANDBY POWER Switch

AUTO (guarded position) –
  • In flight, or on the ground, and AC transfer busses powered:



  • In flight, or on the ground, loss of all AC power





OFF (unguarded center position) –
  • STANDBY PWR OFF light illuminates.
  • AC standby bus, static inverter, and DC standby bus are not
    powered.

BAT (unguarded position) –
  • AC standby bus is powered by the battery through the static
    inverter.
  • DC standby bus and battery bus are powered
  • directly by the battery.
  • AC standby bus is powered by AC transfer bus 1.
  • DC standby bus is powered by TR1, TR2 and TR3.
  • AC standby bus is powered by the battery through the
    static inverter.
  • DC standby bus is powered by the battery.
  • Battery bus is powered by the battery.