Quiz 2 more specific Flashcards
Explain the electrical system in general
APU which has 28 volts runs the PS2 (which then has 28 volts)
the PS2 will feed the power to PS2 but only when the bus tie connector is tied (which we manually do)
the PS1 and PS2 charge their respective batteries which have 24 volts
the PS1 and PS2 run the PE bus which also has 28 volts. although stuff can only go to the PE not the other way. it is a one way street.
what runs in the event of a full electrical failure
PE bus
What tells starter generator to stop being a starter and be a generator
the generator control unit (GCU)
DC pwer
P
AC power
X
Split power
S
Generator Control Unit what does it do
voltage regulator
controls generator through generator line contactor
protects generator form reverse current flow
protects from over voltage (32.5)
stabilize bus bars at 28.5 V
turn starter into a generator
what is the rule on circuit breakers popping out
if they pop out and are deemed necessary to flight they may be pushed back in once. If they pop back out leave it. If they are not an emergency for flight leave them.
What do inverters do
turn DC power to AC power
what kind of power does our airplane have
DC power
if we lose all power and we need to pull circuit breakers to reserve our PE power what circuit breakers do we pull
all that have a white background
how long do we have power if we lose all electrical power
30 minutes
what is our max continuous generator load amps
300 over 400 amps
How many inverters do you need to power everything
1 even though we have 2
what are our starter limits
30 seconds on - 1 minute off
30 seconds on - 1 minute off
30 seconds on - 30 minutes off
