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CL-65 Study Guide > Electrical > Flashcards

Flashcards in Electrical Deck (18):
0

Location of Main battery?

Nose compartment

1

Location of the APU battery?

Aft equipment bay

2

Max engine generator load?

40 KVA

3

Max APU generator load?

40 KVA

4

Max TRU load?

120 amps

5

Max permissible time for ground operations with battery power only?

5 minutes

6

What is the reason for battery power limitations?

To prevent ED1 and ED2 from overheating (fans are AC powered)

7

How many TRU's are installed in the CRJ900?

4

8

Where are the TRU's located?

Nose compartment

9

The Main battery is rated to?

24 volts/17 amp hour

10

The APU battery is rated at?

23 volts/43 amp hour

11

How many generators are installed?

4,
2 IDG (engines)
APU
ADG

12

What is the function of the 4 TRU's?

To convert 115VAC to 28VDC

13

How are the TRU's cooled?

Individual fans

14

Which buses are powered when the Battery Master switch is selected on?

Main battery direct bus
APU battery direct bus
DC battery bus

15

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

Yes

16

Is there an on/off switch for the TRU's?

No, they are automatically powered when the AC busses are powere

17

What controls the DC tie contactors?

The DC Power Centers (DCPC) automatically control DC tie operation?