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31 Cards in this Set
- Front
- Back
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Lead acid batteries provide how many volts/amp hours?
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24V
25 or 28 Amp hours |
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Max continuous generator load
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300
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How can a generator be manually disconnected from its PS bus?
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Select generator switch to TRIP
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How can the battery charge rate be monitored?
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Press the ammeter BATT button
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What does the 0-40 button do on the ammeter?
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Changes the scale from 0-400 to 0-40
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Where is the GPU receptacle located?
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Right rear fuselage
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What does initial selection of the BATT switch to on do?
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Closes both emergency contactors to to connect both batteries to the PE bus
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How can you tell if the batteries are being charged by the GPU?
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Charge rate will be displayed by pressing AMP BATT
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Should the battery capacities be checked prior to using a GPU?
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Yes
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After starting both engines using a GPU, you should..
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START PWR.....OFF
EXT POWER....OFF GPU................DISCONNECT Batteries........Check charging |
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After a GPU start, the GEN FAIL light will extinguish when..
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Generator is online and the EXT POWER switch is selected off
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When using a GPU, the bus bar system is energized when...
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EXT POWER switch is selected on
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Max battery charge rate before takeoff
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20
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What are the transient generator load limits?
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Up to 400 for 2 minutes
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Max discrepancy between generator ammeter readings?
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40
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Purpose of the standby inverter
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Power the XE bus if XS1 loses power
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Sources for battery charging
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Engine generators
APU generator GPU |
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Which battery normally closes both emergency conatactors?
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Batt 1
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What does the BATT EMERG switch do?
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BATT 1 and 2 close emergency contactors and both battery contactors are opened
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What does the battery isolate switch do?
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Isolates either Batt 1 OR 2 from its charging source
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GPU requirements?
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28V
1500 amps 1100 amps limiter |
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When charging batteries using a GPU, when should the EXT BATT CHG be turned off?
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Current drops below 5 amps
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Inverters provide what kind of power?
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115V AC
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APU generator provides?
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28V DC
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What does the APU generator initially power?
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PS2
PE PE2 Charges Batt 2 |
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What switch must be turned on after APU generator is online?
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BUS TIE CLOSE
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What does bus bar protection provide?
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Opens both battery contactors if voltage is above 29.5 or below 24.5
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#1 Inverter powers
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XE and XS1
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#2 Inverter powers
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XS2
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What is the purpose of the bus tie?
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Ties PS1 to PS2, or separates PS1 from PS2
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How long can the batteries power the capatain's instruments after a dual generator failure?
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60 minutes
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