Electrical System

Question 1

Possible sources of DC power include:_____?

Answer 1

Three generators, two 24 VDC 44 AMP batteries/external power (GPU)/HMDG

Question 2

Are the R and L electrical systems normally split or tied together?

Answer 2

Split with a closable bus tie between the two systems.

Question 3

The bus tie automatically closes on____?

Answer 3

external power, battery power, or single-generator

Question 4

What does the AC power control?

Answer 4

Passenger convenience items and cabin lighting through inverters.

Question 5

There are______total CB panels in the Challenger 300, located in the______?

Answer 5

seven;

cockpit (2), entryway (2), galley, and the aft equipment bay (2)

Question 6

There are_____total CB panels in the Challenger 350, located in the_____?

Answer 6

eight;

cockpit (2)
entryway (2)
galley
lav (behind mirror)
aft equipment bay (2)

Question 7

The acceptable GPU voltage range and amperage is____?

Answer 7

24-32 volts, 1,500 amps

Question 8

A green switch indication AVAIL in the EXT PWR switch indicates that the_____?

Answer 8

GPU is connected and meets the electrical quality criteria. When at least 5 volts is sensed, AVAIL is indicated on the PBA and the electrical synoptic page displays a green GPU symbol

Question 9

Individual battery voltage can be read on which two pages?

Answer 9

Electrical Synoptic

Summary

Question 10

The generators automatically come online when____?

Answer 10

the engine is running after start, except when a GPU is connected

Question 11

If a GPU is connected and being used, generators come online_____?

Answer 11

after deselecting the EXT PWR switch

Question 12

When operating on a single generator on the ground,_____buses are powered, including:______?

Answer 12

all six; R&L essential, R&L main, and R&L aux

Question 13

When operating on a single generator while in flight,______buses are powered, including:_____?

Answer 13

four; R&L essential, R&L main-AUX buses are load shed automatically

Question 14

Auxiliary buses are automatically load shed while in flight during_____?

Answer 14

Single Generator and Essential Power Only operations

Question 15

With a loss of all generators in flight, running on Essential Power Only, which buses remain powered?

Answer 15

Essential and battery

Question 16

Selecting the battery switch to the ON position connects the batteries to______buses.

Answer 16

Essential

Question 17

The minimum voltage required on the left battery prior to APU start is______?

Answer 17

greater than 20 volts per AW300-24-0043

Question 18

What’s the description of the CL-30 2 batteries and what’s the amp hour?

Answer 18

two 24 VDC NICAD

44

Question 19

What battery is normally responsible for the APU Start? Can the other be used if necessary?

Answer 19

Right, and yes then left can be used if right is unavailable.

Question 20

Can all three gens power the aircraft simultaneously? What happens to the APU?

Answer 20

Yes the right and APU normally share the load of the right-side system.

Question 21

The Emergency Lights come on automatically during_____?

Answer 21

right main bus failure

Question 22

Where do you plug the GPU in?

Answer 22

the lower-right side of the fuselage, just below the right engine pylon

Question 23

The_____battery is turned on first when powering up the aircraft in order to____?

Answer 23

right battery

prevent uncommanded APU starts

Question 24

The left and right AUX buses power____?

Answer 24

cabin AC and DC, the right-side window, and foot warmers

Question 25

The GND SERVICE PBA (found on the External Power Panel) functions to____?

Answer 25

turn on cabin inverters, allowing for servicing

Question 26

After generated power loss, battery power will last as follows:____?

Answer 26

Main 24. VDC 44 amp batteries = 1 hr;
standby battery = 3.5 hr