26. ELEC Panel Flashcards Preview

Allegiant A320 Exam Guide > 26. ELEC Panel > Flashcards

Flashcards in 26. ELEC Panel Deck (23)
Loading flashcards...
1
Q

How do we check the battery voltage and charging system?

A

o Select the ECAM ELEC page.
o Place BAT 1 and BAT 2 PBs to OFF.
o Check that the battery voltage is above 25.5 volts.
o Place BAT 1 and BAT 2 PBs to AUTO.
o Check that both battery charge currents drops below 60 amps within 10 sec.
o Deselect the ECAM ELEC page.

2
Q

Will the batteries completely drain if you leave the BAT switches in AUTO after AC power is removed?

A

o No

o Battery cut‐off logic prevents complete discharge when the aircraft is on the ground and unpowered.

3
Q

How is the BATTERY BUS normally powered?

A

DC BUS 1

4
Q

What does the amber FAULT light in the GALLEY pb indicate?

A

At least 1 generator load is above 100% rated output.

5
Q

How does the GALLEY pb work in AUTO?

A

Sheds main galley if inflight with only one generator running

6
Q

What is the max continuous load rating of the engine and APU generators?

A

90 KVA

7
Q

What does a FAULT on the ENG GEN pb indicate?

A

A fault is detected by the GCU or the pb is selected ON, but the associated engine is not operating.

8
Q

When is it normal to see the ENG GEN FAULT light illuminated?

A

Prior to engine start

9
Q

What does the APU GEN FAULT light indicate?

A

The GCU has detected a fault.

10
Q

What is the function of the BUS TIE in the AUTO position?

A

Allows the BUS TIE CONTACTORS to open and close automatically to maintain power to both AC BUS 1 & 2 in the preferential order of respective engine, EXT power, APU GEN, opposing engine GEN.

11
Q

What is the logic with the BUS TIE in the OFF position?

A

The only power source that can be applied to AC Bus 1 and 2 is their respective engine driven generator. EXT power, APU GEN, and opposing GEN cannot power the network.

12
Q

What does IDG stand for?

A

Integrated Drive Generator

13
Q

What is the function of the IDG?

A

Converts variable engine speed to constant speed for optimum generator operation

14
Q

Is the IDG oil system separate from the engine oil system?

A

Yes

15
Q

What cools IDG oil?

A

Fuel/Oil cooler that utilizes fuel flow from the associated engine fuel supply line.

16
Q

What does an IDG FAULT light indicate?

A

Oil pressure low or high oil temperature

17
Q

What precautions must you take when disconnecting an IDG?

A

To avoid damage to the disconnect mechanism:
 Do not disconnect unless the engine is at or above idle RPM and
 IDG pb should not be pressed for more than 3 seconds.

18
Q

What is the function of the AC ESS FEED pb in the normal position?

A

If AC BUS 1 is lost AC BUS 2 automatically feeds the AC ESS BUS

19
Q

What does the AC ESS FEED pb white ALT light indicate?

A

The AC ESS BUS is supplied by AC BUS 2.

20
Q

What does a BAT FAULT light indicate?

A

Battery charging current is outside limits (BAT contactor opens).

21
Q

When would you expect to see the batteries connected to the BATTERY BUS?

A

o APU start
o Battery charging
o AC BUS 1 and 2 unpowered (>100KTS), and emergency generator not supplying power.

22
Q

With the APU green AVAIL light ON and the EXT PWR blue ON light illuminated, which system is powering the aircraft?

A

EXT PWR

23
Q

What is the significance of green, red, and black circuit breakers on the flight deck?

A

o Green – Monitored by ECAM system, will generate ECAM if tripped
o Red – Crew cannot reset (ex: Wing Tip Brakes)
o Black – not monitored, no ECAM message generated if tripped