ELECTRICAL
AIRPLANE
OPERATIONS
MANUAL
2-05-10
Page
10
Code
01
JUNE 28, 2002
CONFIGURATION 5
Short circuit at one DC Bus with loss of one associated generator
and without APU generator:
− Both batteries are removed from the affected DC bus through
the fuses.
− BTC 1 and BTC 2 are open.
− Remaining GLC of the affected DC Bus opens, isolating the bus.
− Cross-side BTC and EIC close, and EBC of the affected side is
energized to maintain both Essential DC Buses energized and
associated battery charged.
− Both SBCs are open.
Short circuit at one DC Bus with loss of associated generators
and without APU generator:
− Both batteries are removed from the affected DC bus through
the fuses.
− BTC 1 and BTC 2 are open.
− EIC closes and EBC of the affected side is energized to
maintain the associated Essential DC Bus energized and
associated battery charged.
− Both SBCs are open.
Short circuit at one DC Bus with loss of associated generators plus
one generator of the other side, with or without APU generator:
− The EDL operational sequence is the same as in the previous
condition.
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