T-6 A Electrical System SY106 Flashcards
Identify the major components of the electrical system
28 VDC, 200 amp starter/generator, a 24 VDC lead acid battery, a 24 VDC auxiliary battery, and a 28 VDC external power receptacle
How is the electrical system wired together
Wired together through a battery bus and a generator bus, which both can be isolated through a bus tie.
True/False: Is there enough power after start in the generator to charge the battery and aux battery to 24V?
True
What does the Generator control unit (GCU) do?
provides voltage regulation, over voltage and under voltage protection, and generator overload protection by tripping the generator off line.
What does the bus tie switch do?
used to tie the battery and generator buses together for normal operation
What does the avionics master switch do?
Power for all avionics and radio systems in both cockpits, except the backup UHF control unit and receiver.
What are circuit breakers
Protects systems and equipment operating from the battery bus
What are the secondary power components?
24 VDC 42 amp-hour battery, 24 VDC, 5 amp-hour aux battery, and external power receptacle
What is the purpose of the battery?
Provides power for engine starts and is capable of powering all electrical systems, except air conditioning in the event of a GEN failure
Purpose of AUX battery?
Same as battery, but only if the Generator and primary battery both fail.
When will the landing/taxi lights work?
When the gear is down and fully extended/locked
How often do the strobe lights flash?
About 30 times a minute.
Where is the primary electrical power provided from?
Starter/generator located in the engine accessory gearbox
Whats happens when either cockpit moves the generator/battery switch from OFF to ON or from ON to OFF?
The other cockpit will automatically do the opposite
What powers the Hot battery bus?
The battery when installed in the aircraft
What gives power to essential components in the event of an emergency? (battery failure)
The hot battery bus
A circuit labeled AFT BAT on the front cockpit battery bus controls what?
The rear cockpit battery bus
Circuit breakers protecting systems and equipment from the battery bus are located where?
Left console panel
Each circuit breaker is marked with the maximum “what” before popping?
Current load in amps
Where is the AUX BAT switch located?
Right Forward cockpit only
Where is the AUX BAT test switch located?
Left console test panel in front cockpit only
How long do you have to test the AUX BAT test switch for?
5 seconds to see if the light illuminates and extinguishes when released
Where is external power distributed?
Through the Battery bus
Where is the voltage sensor located?
Between the external power connector and the external relay.
External power controlled by the what? and distributed on the what?
controlled by the battery switch and distributed on the battery bus
Where is the lighting controls for EFIS displays, the AOA indexer, and the GPS control panel?
They are mounted on the individual units
