A220 Type - Electrical
How many K.V.A. is the RAT rated for
10 K.V.A
How many batteries do we have on the aircraft
2
How many TRUs do we have on the CSeries
3
Up to what altitude can the APU generator be used
30 000'
What can be the maximum load on the AC generators
75 kVA continuous
Which buses are powered when the aircraft is in ground service mode (not including the hot buses)
AC BUS 1 and DC BUS 1 and 10 sec later AC BUS 2
Which buses are powered by the RAT
AC ESS Bus and DC ESS bus (through TRU3)
What is the purpose of the L DISC and R DISC guarded switches
Allows the crew to disconnect the respective generator shaft from the accessory gearbox
What is the purpose of the RAT GEN guarded switch
Allows the flight crews to manually deploy the RAT
Which message comes on EICAS, when the batteries have been supplying power for more than 5 minutes
BATT DISCHARGING (caution msg)
What are the conditions in which the battery chargers will activate
Battery switch is in AUTO; and, Corresponding AC Bus is powered If the a/c electrical system is in Service Mode (regardless of Batt switch position)
In which condition does the RAT provides emergency A.C. power
Complete loss of AC power
Which DC bus is not normally displayed on the electrical page
DC EMER
What buses are identified as the hot buses of the aircraft
DC EMER bus BATT DIR BUS1 BATT DIR BUS2
What are the 3 parameters checked when External A.C. power is connected to the aircraft
Frequency, voltage and phase
When connected, if external A.C. power is suitable, what indication do you have on the overhead panel
Green AVAIL light on the external power switch
What is the purpose of the BATT 1 & BATT 2 switches
It allows the respective BATT DIR bus to be connected to its corresponding DC ESS bus
What is the purpose of the CABIN PWR switch
It is used to isolate cabin smoke sources by deactivating electrical loads
What is the purpose of the BUS ISOL switch in either MAIN or ESS
It isolates the selected EPCs preventing automatic reconfiguring of the electrical load distribution.
Which message displays on EICAS in case of low oil pressure or high oil temperature
L GEN OIL or R GEN OIL
What types of batteries do we have on the aircraft
NiCad batteries ( Nickel Cadmium)
What does PMAG stand for
Permanent Magnet Alternator Generator
What is used on the CSeries to provide emergency AC power
RAT (Ram Air Turbine)
Which switch in the cockpit can be used to deploy the RAT manually
RAT GEN switch
Where is the RAT stored
Right side of the wing-to-belly fairing, near the right main landing gear
How many Amps are each TRU rated at
TRU1: 350 Amps TRU2: 350 Amps TRU3: 225 Amps (additional 125 Amps dedicated to FBWPC)
What are the two primary sources of AC power
The 2 VFGs (variable frequency generator)
Other that supplying electrical power, the RAT also powers another component, what is it
The RAT hydraulic pump
Which buses are powered when the EXT PWR switch is used on the overhead panel
The entire electrical system
What are the 4 possible sources of AC power for the aircraft (ground and flight)
VFGs ( L gen & R gen) APU EXT AC RAT
