Praetor Electrical System

Question 1

What type of electrical system is the airplane equipped with?

Answer 1

A 28VDC electrical power generation and distribution system.

Question 2

If both generators are available, do they operate in a split bus mode or parallel mode?

Answer 2

Split bus mode

Question 3

What does the white AVAIL light indicate?

Answer 3

That the GPU button is pushed out, a GPU is connected and the voltage is set between 25VDC and 30VDC

Question 4

Which light will illuminate when the GPU button is pushed in and providing power to the airplane?

Answer 4

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

Question 5

What color does the battery voltage indication show if the battery is discharging?

Answer 5

Amber

Question 6

What will the indication be on the electrical synoptic page if the GPU is connected but is not providing power to the airplane?

Answer 6

A white GPU

Question 7

Will the Ram Air Turbine (RAT) be continuously displayed on the electrical synoptic page? If not, when will it be displayed?

Answer 7

No only when it is deployed and providing power to the airplane

Question 8

How can the pilot manually command the RAT to deploy?

Answer 8

The right seat pilot can pull the red manual deploy control

Question 9

What busses is the APU capable of supplying power to on the ground if the APU is the only source of electrical power?

Answer 9

All electrical loads including shed buses and charging the batteries

Question 10

What buses are the APU capable of supplying power to inflight?

Answer 10

All electrical loads (except for the shed buses) and charging the batteries

Question 11

What buses does the RAT generator power?

Answer 11

EMER BUS 1, 2, and 3 and charging the batteries

Question 12

When will the RAT automatically deploy?

Answer 12

During an electrical emergency

Question 13

IN flight, when will an electrical emergency occur?

Answer 13

When the two main generators and the APU generator are unavailable

Question 14

What is the rating of the main batteries?

Answer 14

24V DC 40 Ah NiCad batteries

Question 15

If the batteries are the only source of electrical power in flight, what buses will be powered and what CAS message will be displayed?

Answer 15

THE EMER buses; the red BATT DISCHARGING CAS message

Question 16

In an electrical emergency, what buses are powered/isolated from the aircraft electrical system

Answer 16

EMER BUS 1, EMER BUS 2 and EMER BUS 3

Question 17

In an electrical emergency, what sources of power can procide electrical power to EMER BUS 1, EMER BUS 2 and EMER BUS 3

Answer 17

BATT 1, BATT 2 or the RAT

Question 18

What buses will be energized when the airplane is de-energized and there is no electrical power source available?

Answer 18

HOT BATT BUS 1 and HOT BATT BUS 2

Question 19

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?

Answer 19

SHED BUS 1

Question 20

Which battery is connected to the APU START BUS to assist with APU start?

Answer 20

BATT 2

Question 21

How many generators need to be operating in order for the SHED BUSES to be energized in flight?

Answer 21

TWO