Electrical System Flashcards
Possible sources of DC power include:_____?
Three generators, two 24 VDC 44 AMP batteries/external power (GPU)/HMDG
Are the R and L electrical systems normally split or tied together?
Split with a closable bus tie between the two systems.
The bus tie automatically closes on____?
external power, battery power, or single-generator
What does the AC power control?
Passenger convenience items and cabin lighting through inverters.
There are______total CB panels in the Challenger 300, located in the______?
seven;
cockpit (2), entryway (2), galley, and the aft equipment bay (2)
There are_____total CB panels in the Challenger 350, located in the_____?
eight;
cockpit (2)
entryway (2)
galley
lav (behind mirror)
aft equipment bay (2)
The acceptable GPU voltage range and amperage is____?
24-32 volts, 1,500 amps
A green switch indication AVAIL in the EXT PWR switch indicates that the_____?
GPU is connected and meets the electrical quality criteria. When at least 5 volts is sensed, AVAIL is indicated on the PBA and the electrical synoptic page displays a green GPU symbol
Individual battery voltage can be read on which two pages?
Electrical Synoptic
Summary
The generators automatically come online when____?
the engine is running after start, except when a GPU is connected
If a GPU is connected and being used, generators come online_____?
after deselecting the EXT PWR switch
When operating on a single generator on the ground,_____buses are powered, including:______?
all six; R&L essential, R&L main, and R&L aux
When operating on a single generator while in flight,______buses are powered, including:_____?
four; R&L essential, R&L main-AUX buses are load shed automatically
Auxiliary buses are automatically load shed while in flight during_____?
Single Generator and Essential Power Only operations
With a loss of all generators in flight, running on Essential Power Only, which buses remain powered?
Essential and battery
Selecting the battery switch to the ON position connects the batteries to______buses.
Essential
The minimum voltage required on the left battery prior to APU start is______?
greater than 20 volts per AW300-24-0043
What’s the description of the CL-30 2 batteries and what’s the amp hour?
two 24 VDC NICAD
44
What battery is normally responsible for the APU Start? Can the other be used if necessary?
Right, and yes then left can be used if right is unavailable.
Can all three gens power the aircraft simultaneously? What happens to the APU?
Yes the right and APU normally share the load of the right-side system.
The Emergency Lights come on automatically during_____?
right main bus failure
Where do you plug the GPU in?
the lower-right side of the fuselage, just below the right engine pylon
The_____battery is turned on first when powering up the aircraft in order to____?
right battery
prevent uncommanded APU starts
The left and right AUX buses power____?
cabin AC and DC, the right-side window, and foot warmers
The GND SERVICE PBA (found on the External Power Panel) functions to____?
turn on cabin inverters, allowing for servicing
After generated power loss, battery power will last as follows:____?
Main 24. VDC 44 amp batteries = 1 hr;
standby battery = 3.5 hr
