Electrical System

Question 1

What is indicated by a “GENERATOR 1 OFF” CAS message?

Answer 1

Generator 1 is off and the engine is running

Question 2

What is indicated by a “GENERATORS” CAS message?

Answer 2

Both generators are off and the engine is running

Question 3

How long will 2 fully charged batteries last after the loss of both generators?

Answer 3

30 minutes, including 1 attempted restart

Question 4

Which buses automatically load shed after a single generator failure?

Answer 4

1. Non Ess bus
2. That particular Gen bus
3. Cabin bus

Question 5

What does the CAS message “EPS ON” indicate?

Answer 5

The EPS battery is powering the EPS bus

Question 6

Selecting only the STBY BUS on, will power which avionics?

Answer 6

DU 3

Question 7

In case of an engine or dual generator failure, what are your sources for electrical power?

Answer 7

2 24 volt batteries and the EPS battery

Question 8

Which components are load shed following a dual generator failure?

Answer 8

1. Gen 1 & 2 busses
2. Main bus
3. Avionics 2 bus
4. Non essential bus
5. Cabin bus
6. Cabin heater
7. RH windshield deice
8. Prop deice
9. AOA heaters
10. VCCS compressor

Question 9

While on the ground, what’s the purpose of the bus tie circuit breaker?

Answer 9

Allows the pilot to reset it

Question 10

If either generator fails, how does the remaining generator connect to the Power and Secondary Power lines?

Answer 10

via the bus tie

Question 11

If the MAIN bus fails, can you operate the deice boots?

Answer 11

No

Question 12

During normal ops, the Essential bus is powered by?

Answer 12

Gen 1

Question 13

How many volts and amps from the generators?

Answer 13

28V/300amps

Question 14

How many volts and amps from the batteries?

Answer 14

24V/42amps

Question 15

What’s the power source for the STBY bus?

Answer 15

Hot battery bus, unless the aircraft is fully powered, then Avionics 1

Question 16

With the engine running, which buses are powered by Gen 2?

Answer 16

1. Main
2. Avionics 2
3. Non-essential
4. Cabin

Question 17

When the MASTER POWER switch is positioned to EMERGENCY OFF, which electrical systems remain energized?

Answer 17

1. Hot Bat bus
2. Emer Power bus

Question 18

If you receive a “GENERATOR 1 OFF” CAS message while in the flight levels, should you initiate an emergency descent?

Answer 18

No, but land as soon as practical

Question 19

How is power distributed after a lost generator?

Answer 19

via the bus tie

Question 20

How long will the ESIS remain operative following a dual generator failure?

Answer 20

30 minutes

Question 21

With the engine running, Gen 1 is the primary power source for which buses?

Answer 21

1. Gen 1
2. Avionics 1
3. Essential
4. EPS
5. STBY Power
6. Hot Battery

Question 22

Generator 1 powers

Answer 22

Gen 1 bus
Avionics 1 bus
Essential bus
Standby power bus
Emergency power bus
Cabin heater
LH windshield power
Prop deice
Flap power

Question 23

Generator 2 powers

Answer 23

Gen 2 bus
Avionics 2 bus
Non-essential bus
Cabin bus
Main bus
Underfloor heater
Footwarmer
RH windshield power
Hydraulic power

Question 24

The Essential Bus can be powered by:

Answer 24

Both generators and both batteries