Electrical

Question 1

Primary Battery

Answer 1

provides essential power to the aircraft for aircraft starting and shutdown.

Question 2

Battery System

Answer 2

The battery subsystem con-sists of a primary battery with a connected charger and an emergency battery with an internal charger.

Question 3

EPMS?

Question 4

Power Distribution Panel (PDP)

Answer 4

Provides overcurrent sensing and distributes AC, DC and BATT

Question 5

Circuit Breaker Panels (CBP)

Answer 5

5 total in aircraft, receive power from PDP and direct to using sys.

Question 6

Electronic Load Controller (ELC)

Answer 6

Non-redundant, provide secondary switched power distribution

Question 7

Primary Battery Subsystem

Answer 7

Provides 24V DC for Cold Refuel, Starting APU, starting ENG when using external air source
12 minutes at 80%

Question 8

Emergency Battery Subsystem

Answer 8

30 minute backup to IMC/IFR equipment
Only works if both R/TRUs fail

Question 9

Generators (GEN)

Answer 9

i. Driven by the XMSN Accessory Gearbox (AGB)
ii. Provide 115V AC, 400 Hz, 3-phase power
iii. One generator is able to supply workload for entire aircraft

Question 10

Generator Control Unit (GCU)

Answer 10

Manage power output and protect GEN from under/over Voltage

Question 11

Regulated Transformer Rectifier Unit (R/TRU)

Answer 11

i. Primary source of DC power 28V DC
ii. Converts AC power from GENs to DC power and sends to PDP