ELECTRICAL
AIRPLANE
OPERATIONS
MANUAL
2-05-10
Page
8
Code
01
REVISION 22
CONFIGURATION 4
Short circuit at one DC Bus with all generators on:
− Associated battery is removed from affected DC bus through a fuse.
− BTC 1 and BTC 2 are open.
− Both GLCs of the affected DC Bus are open, isolating the bus.
− Cross-side BTC and EIC are closed and affected side EBC is
energized to maintain both Essential DC Buses energized and
batteries charged.
Short circuit at one DC Bus with loss of one associated generator
and with APU generator:
− Associated battery is removed from the affected DC bus through a
fuse.
− BTC 1 and BTC 2 are open.
− Remaining GLC of the affected DC Bus opens, isolating the bus.
− Cross-side BTC and EIC are closed, and affected side EBC is
energized to maintain both Essential DC Buses energized and
batteries charged.
Short circuit at one DC Bus with loss of associated generators
and with 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 affected side is energized to maintain
the associated Essential DC Bus energized and associated
battery charged.
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