Electrical System Flashcards
What is indicated by a “GENERATOR 1 OFF” CAS message?
Generator 1 is off and the engine is running
What is indicated by a “GENERATORS” CAS message?
Both generators are off and the engine is running
How long will 2 fully charged batteries last after the loss of both generators?
30 minutes, including 1 attempted restart
Which buses automatically load shed after a single generator failure?
- Non Ess bus
- That particular Gen bus
- Cabin bus
What does the CAS message “EPS ON” indicate?
The EPS battery is powering the EPS bus
Selecting only the STBY BUS on, will power which avionics?
DU 3
In case of an engine or dual generator failure, what are your sources for electrical power?
2 24 volt batteries and the EPS battery
Which components are load shed following a dual generator failure?
- Gen 1 & 2 busses
- Main bus
- Avionics 2 bus
- Non essential bus
- Cabin bus
- Cabin heater
- RH windshield deice
- Prop deice
- AOA heaters
- VCCS compressor
While on the ground, what’s the purpose of the bus tie circuit breaker?
Allows the pilot to reset it
If either generator fails, how does the remaining generator connect to the Power and Secondary Power lines?
via the bus tie
If the MAIN bus fails, can you operate the deice boots?
No
During normal ops, the Essential bus is powered by?
Gen 1
How many volts and amps from the generators?
28V/300amps
How many volts and amps from the batteries?
24V/42amps
What’s the power source for the STBY bus?
Hot battery bus, unless the aircraft is fully powered, then Avionics 1
With the engine running, which buses are powered by Gen 2?
- Main
- Avionics 2
- Non-essential
- Cabin
When the MASTER POWER switch is positioned to EMERGENCY OFF, which electrical systems remain energized?
- Hot Bat bus
- Emer Power bus
If you receive a “GENERATOR 1 OFF” CAS message while in the flight levels, should you initiate an emergency descent?
No, but land as soon as practical
How is power distributed after a lost generator?
via the bus tie
How long will the ESIS remain operative following a dual generator failure?
30 minutes
With the engine running, Gen 1 is the primary power source for which buses?
- Gen 1
- Avionics 1
- Essential
- EPS
- STBY Power
- Hot Battery
Generator 1 powers
Gen 1 bus
Avionics 1 bus
Essential bus
Standby power bus
Emergency power bus
Cabin heater
LH windshield power
Prop deice
Flap power
Generator 2 powers
Gen 2 bus
Avionics 2 bus
Non-essential bus
Cabin bus
Main bus
Underfloor heater
Footwarmer
RH windshield power
Hydraulic power
The Essential Bus can be powered by:
Both generators and both batteries
