Electrical Abnormal And Emergency Procedures Flashcards

1
Q

During single generator operation if the voltage on the left generator bus is 24V, and the right generator bus is 28V, then _________.

A

The right current limiter has failed.

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2
Q

What is the one reason you may see illumination of one of the AC BUS annunciations?

A

Inverter failure

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3
Q

When the bus sense switch is tested during the electrical system check, 24V are observed on the centre bus. What would cause this?

A

The battery tie has not opened.

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4
Q

During DUAL GENERATOR FAILURE, with a 40A electrical load, the battery will discharge in approximately ___________ minutes.

A

40 minutes

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5
Q

Hall Effect Device (HED)

A

Set to 275 A, HEDs will open the associated bus tie if properly polarized current flow becomes excessive.

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6
Q

What is the corrective action for a tripped circuit breaker?

A

Do not reset a tripped circuit breaker a second time.

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7
Q

With loss of both inverters, why must power be set with fuel flow?

A

Prior to FL119 and including FL121, torque meters are AC

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8
Q

What is the correct procedures for illumination of the #1 AC BUS warning annunciation?

A

AC circuit breaker - Check

No. 1 Inverter - Bus Transfer

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