Electrical panel Flashcards
Min batter voltage is
25.5V
The battery voltage is on valid when the batteries are in the ____ Position.
OFF
The battery switches in auto will connect up automatically in what 3 circumstances
Sole source of power. For charging. starting the APU
Fault light on the Battery mean?
The battery charge is out of limits.
Fault light on the generator mean?
GCU trip or the contractor is open.
Fault light on the IDG
High oil temperature or low oil pressure.
How do we disconnect the IDG
The Engine has to be running first. Lift the guard and momentarily <3second push the button.
Power priority of powering an AC bus
Onside gen
external power
APU
Offside GEN
ACC essential fault light
means that the AC essential bus is not powered.
Single gen ops. Which bus gets shed
Galley bus
If both Gens are operating but one is at 100 percent capacity. Where would you see the fault light?
On the galley pushbutton.
When does the RAT deploy?
loss of ACbus 1 and 2. speed great than 100 knots.
Why would you see a red fault light on the emergency power panel?
Because the Generator is supposed to be supply power. And its not. Push the Emergency Gen button
How many buses will be powered when the rat is deployed and which screens will turn on?
4busses 4 screens. PFD1 ND1 E/WD. MCDU 1
When between 125 - 140 knots. How many busses are powered. and which screens will appear?
2 buses. two screens. PFD1 E/WD