Electrical System

Question 1

What two types of power does the KC-30A have

Answer 1

AC - 115V/400MHz
DC - 28V

Question 2

how many generators does the KC-30A have ?

Answer 2

Generator 1, Generator 2, APU generator

Question 3

what are GCUs

Answer 3

Generator Control Units - control output of each generator. controls frequency and voltage, and protects the network by controlling associated generator line.

Question 4

What are transformer Rectifiers ? and explain how many are on the aircraft

Answer 4

transformer rectifiers convert the aircrafts AC power to DC power.
there are six rectifiers on board the aircraft.
TR1/2 - supply aircraft essential electrical system
TR3/4 - supply military DC systems
TR5 - Aircraft systems
TR6 - controls APU start and APU BAT charging

Question 5

What does a green avail mean on the O/H external pwr button

Answer 5

Indicated there is external power hooked up to the aircraft however is not turned on

Question 6

what does a green avail mean on the APU button

Answer 6

APU is operating with the flaps open and is providing bleed air and electrical supply to the aircraft

Question 7

what is the minimum voltage for the batteries to operate

Answer 7

25.5V

Question 8

In AAR operations what is the affect of losing one generator

Answer 8

POD OPS - can be performed but only one POD can be energized
BOOM OPS - boom AAR can be performed, operation of the system is degraded

Question 9

How long can the aircraft fly with battery supply only

Answer 9

estimated 30 minutes