Electrical Abnormal And Emergency Procedures Flashcards
During single generator operation if the voltage on the left generator bus is 24V, and the right generator bus is 28V, then _________.
The right current limiter has failed.
What is the one reason you may see illumination of one of the AC BUS annunciations?
Inverter failure
When the bus sense switch is tested during the electrical system check, 24V are observed on the centre bus. What would cause this?
The battery tie has not opened.
During DUAL GENERATOR FAILURE, with a 40A electrical load, the battery will discharge in approximately ___________ minutes.
40 minutes
Hall Effect Device (HED)
Set to 275 A, HEDs will open the associated bus tie if properly polarized current flow becomes excessive.
What is the corrective action for a tripped circuit breaker?
Do not reset a tripped circuit breaker a second time.
With loss of both inverters, why must power be set with fuel flow?
Prior to FL119 and including FL121, torque meters are AC
What is the correct procedures for illumination of the #1 AC BUS warning annunciation?
AC circuit breaker - Check
No. 1 Inverter - Bus Transfer