DC Electric Flashcards
Describe the Starter/Generators
(2) 250Amp, 28VDC
Connected to N1 shaft
Starter function takes precedence over generator
L/R DC GEN
Left or Right generator is “Off Line”
Generator has failed
Generator Control Unit has failed
Generator has been knocked off-line
Generator has not been placed on-line
Max continuous load
250A
Load/Volt meters
Indicate demanded load
Normal 18 L and 20 R
Show generator BUS voltage when pushed
Voltage def.
pressure from inside battery or generator. “How much push”
Amps def.
How much flow. How fast the electrons are moving.
Load def.
How hard is the generator working relative to it’s maximum continuous output.
Items powered by the hot battery bus:
Fire Extinguishers (equipped aircraft) Firewall shutoff valves Standby fuel pumps (Straight 200s only) Threshold lights (door & under wing) Baggage light
Items powered by Left Gen Bus:
Main items:
Inverter #1
Avionics Bus #1
Pilot’s Windshield Heat
Air Conditioning Condenser Blower
Items powered by Right Gen Bus:
Main items:
Inverter #2 Avionics #2 Copilot's Windshield Heat Landing Gear motor Vent BLower motor Aft Blower motor
Main items powered by #1 DF Bus:
Items labeled LEFT or #1 (except fuel)
Main items powered by #2 DF Bus:
Items labeled RIGHT or #2 (except fuel)
Main items powered by #3 DF Bus:
LEFT side fuel systems items
Main items powered by #4 DF Bus:
RIGHT side fuel system items
Min volts for battery start:
22V