Term
| What is the warning associated with FS245 and electrical systems? |
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Definition
| crew must ensire significant clearance between cargo loads and the aft portion of 245 in order to gain access to the circuit breaker panels. |
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Term
| When do we use mechanical circuit breakers (MCB) as switches? |
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Definition
| Never. only during emergencies or maintenace. |
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Term
| The elecrtical AC system has how many buses? How many DC buses? |
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Definition
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Term
| What supplies power for the AC power system? |
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Definition
| 4 engine driven generators driven by a GMAD (gear mounted accesory drive). When did CSO's sign up for this. Why do I feel like an engineer. What is happening. |
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Term
| If the load on a generator is less than 5% what could the indicator read? |
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Definition
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Term
| What does the GCU monmitor (generator control unit) |
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Definition
| frequency and voltage and it regulates the power to the bus. |
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Term
| What does the GCU do if it senses out of tolerance or an internal fault? Does this always genberate an ACAWS message? |
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Definition
| opens the line contactor to disconnect the generator from the electrical distibution system. NO. |
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Term
| What position are the four engine generator switches normally in? What are two standard exceptions? |
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Definition
| ON, except to turn off a malfunctioning generator or to perform bus load shedding procedures. |
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Term
| When transferring power to APU or APY to engine generator, a holdiogn relay willl maintain power for approximately ___ seconds. |
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Definition
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Term
| How is the DC electrical system powered? |
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Definition
| by the AC electrical system through 4 regulated transformer rectifiers. |
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Term
| What are the only crew operated DC controls? |
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Definition
| Battery switch and battery test switch. |
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Term
| What color are tripped, pulled or strapped circuit breakers on the ECB? What about SET breakers? |
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Definition
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