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19 Cards in this Set
- Front
- Back
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IDG stands for:
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Integrated Drive Generator
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Each IDG consists of:
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Generater,
Constant Speed Drive Drive oil system |
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Generator control switches have what positions:
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On
and Off |
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The generator control switch ON position does what:
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Closes the
associated generator field and arms the generator breaker to close or open automatically |
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The generator control switch OFF position does what:
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Opens
the associated generator field and breaker EICAS message LorR GEN OFF |
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How is an automatic trip of the generator breaker indicated:
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Appearance of both
the ON flow bar and the GEN CONT OFF light with an EICAS |
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when on the GEN CONT SW appears both
the ON flow bar and the GEN CONT OFF light with an EICAS 2 things are possible: |
A trip due to a fault or
it is selected off. |
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GEN DRIVE DISC sw
disconnects what from what: |
It disconnects the generator from the engine
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What light will appear in the
GEN DRIVE DISC sw during a fault: |
DRIVE
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What does a DRIVE light indicate in the GEN DRIVE DISC sw
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oil pressure too low
or oil temperature too high |
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Activating the GEN DRIVE DISC sw
does what: |
Opens the associated generator breaker
Disconnects the IDG |
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APU GEN sw
ON: |
Closes APU generator field and arms APU generator breaker for automatic operation
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If external power is not in use and APU generator output is normal then:
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APU generator breaker closes
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If a fault occurs the APU generator breaker:
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opens
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APU GEN sw
OFF: |
Opens APU generator field and APU generator breaker, and resets fault trip circuitry
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with the left generator not operating, the APU generator breaker will:
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close automatically
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What condition might be indicated by the presence of both the ON flow bar and the APU GEN OFF light?
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The APU generator breaker is open as a result of a fault
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EXT PWR AVAIL light indicates
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acceptable external power is plugged into the receptacle
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When acceptable external power is plugged into the receptacle and the switch is positioned on what happens:
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APU and/or engine generator breakers will open
EPC closes External power connects to both AC buses |
