Electrical

Question 0

Location of the APU battery?

Answer 0

Aft equipment bay

Question 1

Location of the main battery?

Answer 1

Nose compartment

Question 2

Max engine generator load?

Answer 2

40 KVA

Question 3

Max APU generator load?

Answer 3

40 KVA

Question 4

Max TRU load?

Answer 4

120 amps

Question 5

Max permissible time for ground operations with battery power only? Why?

Answer 5

5 minutes. To prevent ED 1 and ED 2 from overheating because the cooling fans are AC powered

Question 6

How many TRUs are installed?

Answer 6

4

Question 7

Where are the TRUs located?

Answer 7

Nose compartment

Question 8

The main battery is rated to?

Answer 8

24V/17 amp hrs

Question 9

The APU battery is rated to?

Answer 9

24V/ 43 amp hrs

Question 10

How many generators are installed?

Answer 10

4, 2 engine generators, the APU generator, and the ADG

Question 11

What is the function of the 4 TRUs?

Answer 11

To convert 115V AC TO 28V DC

Question 12

How are the TRUs cooled?

Answer 12

Individual fans

Question 13

Which buses are powered when the battery master switch is selected on?

Answer 13

Main battery direct bus, APU battery direct bus, DC direct bus

Question 14

If the main buses are powered, are the essential buses automatically powered?

Answer 14

Yes

Question 15

Is there an on/off switch for the TRUs?

Answer 15

No, they are powered automatically when the AC buses are powered

Question 16

What controls the DC tie contactors?

Answer 16

The DC Power Centers automatically control the DC tie operation

Question 17

When will the ADG automatically deploy?

Answer 17

With complete loss of aircraft power

Question 18

With the ADG deployed, what are the basic items that are powered?

Answer 18

AC ESS bus, hydraulic pump 3B, flaps/slats, STAB trim CH 2

Question 19

What is the ADG Max load?

Answer 19

15KVA