Study Guide-Establishing Electrical Power

Question 1

Min Batt Voltage?
Is that with the Battery PBs ON or OFF?

Answer 1

25.5 V
OFF

Question 2

How do you charge the batteries if the voltage is below 25.5?
How long should it take?

Answer 2

Select EXT power ON
Place BAT pbs ON
Check ECAM ELEC page that contactors are closed and batteries charging.
20 mins.

Question 3

What does a FAULT light in the battery PB indicate?

Answer 3

Charging current for the corresponding battery is outside normal limits.

Question 4

With the FAULT light illuminated in the battery PB is the battery contactor open or closed?

Answer 4

Open

Question 5

With the battery PBs selected what busses are powered (batteries are the only power source)?

Answer 5

HOT BATTERY BUS 1 AND 2 are always powered.
DC BATTERY BUS