ELECTRICAL
AIRPLANE
OPERATIONS
MANUAL
2-05-10
Page
6B
Code
01
JUNE 28, 2002
ABNORMAL OPERATION - CONFIGURATION 3A
Improper transfer to electrical emergency condition:
If during normal operation an improper transfer to electrical
emergency condition occurs, the following modification will take
place:
− ELEC EMERG ABNORM caution message on the EICAS.
− EBC 1, EBC 2, EIC and BC 2 are closed.
− BTC 1, BTC 2 and BC 1 are open.
− GLCs from operating generators are closed.
− SBC 1 and SBC 2 are closed if at least three generators are on.
NOTE:
- BC 2 remains closed to keep the CENTRAL DC BUS
energized and making it possible to perform an APU start.
- In case APU generator is not available, the batteries will
feed the essential buses for at least 40 minutes.
- DC BUS 1 and DC BUS 2 remain energized by the
respective engine generators, but isolated from the
CENTRAL DC BUS.
To Next Page
