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Revision A4: Sep, 2010
Section III Sub-section 9
ELECTRICAL POWER
Pilot’s Operating Manual
BATT EMERG-ON-OFF switch
With no generators or external power supplying the busbars, selection of the BATT switch to ON will
connect both batteries in parallel to busbar PE via the emergency contactors.
When any generator comes on-line both emergency contactors remain closed. The generator fed PS
busbar is connected to its related battery to commence charging, by closure of the associated battery
contactor.
Both batteries may be charged from one generator by selecting the BUS TIE switch momentarily to the
CLOSE position.
EMERG selection energizes both emergency contactors via independent circuits and connects both
batteries to the PE busbar powering the essential services.
BATT
EMERG
ON
OFF
BATT 1
CNTCTR
BATT 2
CNTCTR
EMERG selection - annunciator illuminated
ON selection - annunciator extinguished
Overhead Roof Panel