Electical Flashcards
Where is the CB two circuit breaker panel located?
Behind the copilot seat
Where is the battery voltage indicated?
Electrical synoptic page
Summary synoptic page
What is the maximum amperage on the GPU?
1500 AMPS
While on the ground, which electrical buses are powered with only the APU online?
All 6 busses.
Main , essential and auxiliary
While in flight, which electrical buses are powered with only one generator online?
Main and essential
What is the minimum battery temperature for takeoff?
-20 degrees C
What is the maximum amperage for two or three generators?
400 AMPS
What is the maximum amperage for one generator while on the ground?
400 AMPS
What is the maximum amperage for one generator while in flight?
500 AMPS
What is the transient limit for all generators?
600 AMPS for 5 min
While in flight, with all three generators off-line, which buses are powered?
Essential only
If the aircraft is down to essential power only, how long will the battery last?
1 hr
How long will the standby instrument battery power the ISI?
3.5 hrs
What does a green AVAIL message on the electrical panel indicate?
External power ( GPU) is available with correct voltage and polarity
True or false:
During APU start, the right battery is isolated from the aircraft system and powers the APU starter.
True
Which other generator normally shares the load with the APU generator?
Right side generator
With all three generators operating in flight, if the left generator drops off-line, what automatically happens?
APU automatically switches to the left side and powers the buses.
What items in the aircraft are powered by the left and right AUX busses?
AC and DC power for cabin, foot warmer for copilot and window heat for copilot
Why is the right battery turned on first?
To prevent an uncommanded start of the APU
How many circuit breaker panels are installed on the challenger 350 aircraft?
Seven
What is the in-flight amperage limit when operating with a single generator online?
500 AMPS
What is the time duration of the batteries in-flight with all generators in operative?
1 hr
What is the maximum altitude that the APU GEN can be used?
30,000 Ft
Which buses are powered in-flight with a single generator online?
Main and essential
What are the memory items for APU fire?
APU FIRE switch - FIRE push
FIRE EXT 2 - ARMED push
