Power Dist System Components Flashcards
Power Distribution Provides
115 VAC, 400 Hz;
115 VAC, 60 Hz;
28 VAC, 400 Hz;
28 VDC
IDGs (8) consist of
115/200 VAC, 400 Hz, 75 KVA, air-cooled, engine-driven generator;
Constant Speed Drive (CSD)
Constant Speed Drive
supplies a constant output speed of 12,000 rmp to the generator
AVE Sync Bus Power Supplied by
generators 1,3,5
ME Sync Bus Power Supplied by
generators 2,4,6,7,8
Generator __ acts as a selectable backup or replacement.
5
2 Main AC buses
AVE & ME
APU
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
Master External Receptacle
1A;
supplies power to both main AC buses with SSB closed
External Power Receptacles 2A & 2B
provide power to ME sync bus for a full power check of the SSPA/C
Emergency Inverter
converts 24 VDC power to 115 VAC, 400 Hz, single-phase power for Emergency AC & DC Buses;
located in E5
Transformer Rectifier Unit (TRU)
converts 115/200 VAC, 400 Hz, 3 phase power into 28 VDC;
located in E5, E15, E16
Aircraft Batteries
starboard side, FWD lower lobe
Emergency Lighting Batteries
port side, FWD lower lobe
Bus Power Control Unit (BPCU)
incorporates a logic circuit to control all the BTBs, the APU, and the external power contactors;
located in E16
GCUs (8)
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
ELCUs (12)
each ELCU protects a specific power circuit from current overloads;
located in E15 & E16
Frequency and Load Control Units (FLCU) (8)
used for frequency control and electrical load monitoring;
located in E15 & E16
FRAPU
provides reference frequency signal to all 8 FLCUs;
located in E15
60 Hz Distribution Box location
located in E15
60 Hz Control Panel location
located on P30
E905 location
C4 Cabinet
E42-1 location
aft side of C1 Cabinet
E42-2 location
port side of C1 Cabinet
