曝光台 注意防骗 网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者
Both AC Bus 1 and AC Bus 2 Not available Failed
AC Bus 1 AC Bus 2 Failed
Failed Both AC Bus 1 and AC Bus 2 Failed
Flight Crew Operating Manual MASTER
CSP A-
013
ELECTRICAL Vol. 1 07-
20-
3
AC Electrical System REV 56, Jan 31/03
Flight Crew Operating Manual MASTER
CSP A-
013
ELECTRICAL AC Electrical System Vol. 1 07-
20-
4
REV 56, Jan 31/03
IDG 1 and 2 DISC (Guarded)
Usedto disconnect IDG from engine.
DISC(white) light indicates selected
FAULT(amber) light indicates a IDG (low oilpressure highoiltemperature).
IDG willautomatically disconnect, when overtemperature or overtorque condition occurs.
Once disconnected, the IDG cannot be reset with the engines running.
AUTO XFER
Usedto disableautomatic transfer of associatedIDG.
OFF (white) light indicates autotransfer is selected off.
FAIL(amber) light indicates a fault preventingautotransfer.
EXT AC PUSH
Usedto select externalACpower.
AVAIL(green) light indicates external
andis ready to
indicates that the externalACpower unit is supplyingthe electricalsystem.
AC ESS XFER
Usedto switch essentialbus feed fromACbus 1toACbus 2. ALTN(white) light indicates
essentialbus is fedfromACbus 2. Transfer is automatic during anAC bus 1failure.
AC
Usedto select external ACpower.
AVAIL(green) light indicates external power is connected andis ready to use.
INUSE (white) light indicates that the externalACpower unit is supplyingthe electricalsystem.
GEN 1, 2 and APU GEN AUTO -
Connects generator to associatedbus. OFF/RESET -
Disconnects generator from associatedbus and/or resets the generator control circuit.
External Service Panel
Right Forward Fuselage
AC Electrical System
Figure 07---20---2
Flight Crew Operating Manual MASTER
CSP A-
013
ELECTRICAL Vol. 1 07-
20-
5
AC Electrical System REV 56, Jan 31/03
Flow Lines
Green -
Bus energized.
Blank -
Bus not energized.
Generator Load
Displays theload on the generator.
Generator Voltage
Displays thegenerator voltagelevel.
Generator Frequency
Displays thegenerator frequency level.
EICAS DIGITAL READOUT GREEN AMBER WHITE HALF INTENSITY MAGENTA AMBER DASHES
XX KVA Generator loaded Generator overload Generatornot loaded Invalid data _
XXX V Voltage 100-
125 VAC _ Voltage not in range _ Invalid data
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