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What provides circuit protection, switching control logic, and secondary power distribution for AC, DC, and battery power requirements?
electrical control centers (ELC's)
What controls the application of electrical power to the FCR major components?
What provides reset capability for the current sensing contractors in each HPSM?
the utility relay panel
Where is the utility relay panel located?
right side of the canted bulkhead directly below HPSM 2
behind the pilots seat
How long will the battery supply the normal flight battery loads at 80% charge?
minimum of 12 minutes
When does the battery charger maintain the battery in a fully charged state?
when 115 Vac is available and the battery is not being used
T/F Either generator is capable of supplying the total AC electrical power requirements for operating all aircraft systems.
When is underfrequency protection inhibited?
If a generator is disconnected from the AC bus by crewmember MPD selection or automatically by the GCU, how is it reset?
reset (GEN RST) switch on the pilots check overspeed test/generator reset panel
What is the primary source of DC power for the aircraft?
What ensures that the external power source is providing proper voltage, frequency, and phase sequence to the EPMS?
external power monitor (EPM)
What is the normal external power source?