Flashcards in Electrical Deck (18):
Location of Main battery?
Location of the APU battery?
Aft equipment bay
Max engine generator load?
Max APU generator load?
Max TRU load?
Max permissible time for ground operations with battery power only?
What is the reason for battery power limitations?
To prevent ED1 and ED2 from overheating (fans are AC powered)
How many TRU's are installed in the CRJ900?
Where are the TRU's located?
The Main battery is rated to?
24 volts/17 amp hour
The APU battery is rated at?
23 volts/43 amp hour
How many generators are installed?
2 IDG (engines)
What is the function of the 4 TRU's?
To convert 115VAC to 28VDC
How are the TRU's cooled?
Which buses are powered when the Battery Master switch is selected on?
Main battery direct bus
APU battery direct bus
DC battery bus
If the main buses are powered, are the essential buses automatically
Is there an on/off switch for the TRU's?
No, they are automatically powered when the AC busses are powere