B737 Generator Drive and Standby Power Panel

GEN DRIVE / STBY PWR PNL
P5 FWD OVERHEAD

Generator Drive (DRIVE) Lights

  • Illuminated (amber): Indicates low oil pressure in the Integrated Drive Generator (IDG), caused by one of the following:
    • IDG failure
    • Engine shutdown
    • IDG automatic disconnect due to high oil temperature
    • IDG disconnected through the generator drive DISCONNECT switch

Generator Drive Disconnect (DISCONNECT) Switches (guarded)

  • Disconnects IDG if electrical power is available and the engine start lever is in IDLE.
  • Note: IDG cannot be reconnected in the air.

STANDBY Power Off (PWR OFF) Light

  • Illuminated (amber): Indicates one or more of the following buses are unpowered:
    • AC standby bus
    • DC standby bus
    • Battery bus

STANDBY POWER Switch

  • AUTO (guarded position):
    • In flight, or on the ground with AC transfer buses powered:
      • AC standby bus is powered by AC transfer bus 1
      • DC standby bus is powered by TR1, TR2, and TR3
    • In flight, or on the ground with a loss of all AC power:
      • AC standby bus is powered by battery through static inverter
      • DC standby bus is powered by battery
      • Battery bus is powered by battery
  • OFF (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 battery through static inverter
    • DC standby bus and battery bus are powered directly by battery

Other Electrical Panels:
Ground Power and Bus Switching Panel
AC/DC Metering Panel