Power Dist System Components

Question 1

Power Distribution Provides

Answer 1

115 VAC, 400 Hz;
115 VAC, 60 Hz;
28 VAC, 400 Hz;
28 VDC

Question 2

IDGs (8) consist of

Answer 2

115/200 VAC, 400 Hz, 75 KVA, air-cooled, engine-driven generator;
Constant Speed Drive (CSD)

Question 3

Constant Speed Drive

Answer 3

supplies a constant output speed of 12,000 rmp to the generator

Question 4

AVE Sync Bus Power Supplied by

Answer 4

generators 1,3,5

Question 5

ME Sync Bus Power Supplied by

Answer 5

generators 2,4,6,7,8

Question 6

Generator __ acts as a selectable backup or replacement.

Answer 6

5

Question 7

2 Main AC buses

Answer 7

AVE & ME

Question 8

APU

Answer 8

115/200 VAC, 400 Hz, 170 AMP, 60 KVA, air-cooled generator;
operates at 8,000 rmp;
provides 115 VAC, 400 Hz, 3 phase power

Question 9

Master External Receptacle

Answer 9

1A;

supplies power to both main AC buses with SSB closed

Question 10

External Power Receptacles 2A & 2B

Answer 10

provide power to ME sync bus for a full power check of the SSPA/C

Question 11

Emergency Inverter

Answer 11

converts 24 VDC power to 115 VAC, 400 Hz, single-phase power for Emergency AC & DC Buses;
located in E5

Question 12

Transformer Rectifier Unit (TRU)

Answer 12

converts 115/200 VAC, 400 Hz, 3 phase power into 28 VDC;

located in E5, E15, E16

Question 13

Aircraft Batteries

Answer 13

starboard side, FWD lower lobe

Question 14

Emergency Lighting Batteries

Answer 14

port side, FWD lower lobe

Question 15

Bus Power Control Unit (BPCU)

Answer 15

incorporates a logic circuit to control all the BTBs, the APU, and the external power contactors;
located in E16

Question 16

GCUs (8)

Answer 16

regulate voltage, provide fault protection and load division, incorporates a logic circuit for control of the GCB & BTB for the associated generator;
located in E15 & E16

Question 17

ELCUs (12)

Answer 17

each ELCU protects a specific power circuit from current overloads;
located in E15 & E16

Question 18

Frequency and Load Control Units (FLCU) (8)

Answer 18

used for frequency control and electrical load monitoring;

located in E15 & E16

Question 19

FRAPU

Answer 19

provides reference frequency signal to all 8 FLCUs;

located in E15

Question 20

60 Hz Distribution Box location

Answer 20

located in E15

Question 21

60 Hz Control Panel location

Answer 21

located on P30

Question 22

E905 location

Answer 22

C4 Cabinet

Question 23

E42-1 location

Answer 23

aft side of C1 Cabinet

Question 24

E42-2 location

Answer 24

port side of C1 Cabinet

Question 25

E60-1 location

Answer 25

aft side of C2 Cabinet

Question 26

E60-2 location

Answer 26

starboard side of C2 Cabinet

Question 27

E903-1 location

Answer 27

starboard Battlestaff Console