Praetor Electrical System Flashcards
What type of electrical system is the airplane equipped with?
A 28VDC electrical power generation and distribution system.
If both generators are available, do they operate in a split bus mode or parallel mode?
Split bus mode
What does the white AVAIL light indicate?
That the GPU button is pushed out, a GPU is connected and the voltage is set between 25VDC and 30VDC
Which light will illuminate when the GPU button is pushed in and providing power to the airplane?
If the GPU button is pushed in and providing power to the airplane the white AVAIL light will go off and the green IN USE light will illuminate
What color does the battery voltage indication show if the battery is discharging?
Amber
What will the indication be on the electrical synoptic page if the GPU is connected but is not providing power to the airplane?
A white GPU
Will the Ram Air Turbine (RAT) be continuously displayed on the electrical synoptic page? If not, when will it be displayed?
No only when it is deployed and providing power to the airplane
How can the pilot manually command the RAT to deploy?
The right seat pilot can pull the red manual deploy control
What busses is the APU capable of supplying power to on the ground if the APU is the only source of electrical power?
All electrical loads including shed buses and charging the batteries
What buses are the APU capable of supplying power to inflight?
All electrical loads (except for the shed buses) and charging the batteries
What buses does the RAT generator power?
EMER BUS 1, 2, and 3 and charging the batteries
When will the RAT automatically deploy?
During an electrical emergency
IN flight, when will an electrical emergency occur?
When the two main generators and the APU generator are unavailable
What is the rating of the main batteries?
24V DC 40 Ah NiCad batteries
If the batteries are the only source of electrical power in flight, what buses will be powered and what CAS message will be displayed?
THE EMER buses; the red BATT DISCHARGING CAS message
In an electrical emergency, what buses are powered/isolated from the aircraft electrical system
EMER BUS 1, EMER BUS 2 and EMER BUS 3
In an electrical emergency, what sources of power can procide electrical power to EMER BUS 1, EMER BUS 2 and EMER BUS 3
BATT 1, BATT 2 or the RAT
What buses will be energized when the airplane is de-energized and there is no electrical power source available?
HOT BATT BUS 1 and HOT BATT BUS 2
For ground servicing, when a GPU is connected and providing power to the airplane, with the GPU pushed out and the BATT 1 and BATT 2 switches in the OFF position, which bus is energized by the GPU?
SHED BUS 1
Which battery is connected to the APU START BUS to assist with APU start?
BATT 2
How many generators need to be operating in order for the SHED BUSES to be energized in flight?
TWO
