ELECTRICAL Flashcards
How does the APU generator differ from that of an engine driven generator? Max KvA
APU generator has no IDG but is directly driven by the APU
90 KvA
What drives the emergency generator? Max KvA
Blue Hydraulic system. 5 KvA
What can supply the AC ESS bus?
AC BUS 1
AC BUS 2
AC STATIC INV (BAT)
EMRGENCY GENERATOR (Blue)
On Battery Power only, in flight, which busses are supplied?
Can you start the APU?
DC ESS BUS
AC ESS BUS (no sheds)
You can start it after 45 sec delay (you need DC BAT bus)
What causes the RAT to auto-extend?
Loss of AC BUS 1 + 2
If the RAT does not auto-extend what should you do?
MAN EXTND RAT (needs >200 knot)
Which busses are supplied by the EMER GEN?
AC ESS
DC ESS via ESS TR
with sheds
How is an IDG disconnected?
With IDG Pb. Push it less than 3 sec, only if engine is running (else it can be damaged)
What does the BUS TIE Pb do when selected OFF?
Opens both bus tie connectors (separating system 1 and system 2)
What does the AVAIL (green) on the EXT PWR Pb mean?
EXT PWR is plugged in and within healthy parameters
If TR 1 fails, what supplies the DC ESS BUS?
ESS TR
How is GEN 1 switched OFF in the smoke config?
GEN 1 LINE Pb
From the ELEC SD page, how can you tell that the batteries are bing charged?
Green arrows from DC BAT to the BAT
What is the minimum BAT VOLT at the start of the day?
25,5 Volts
The battery Volts check requires which switches to be OFF?
BAT 1 & 2
