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Rev 3, Apr 25, 2005 Flight Crew Operating Manual Volume 2
ELECTRICAL
AC SYSTEM (CONT'D)
RETRACTION
DEPLOYMENT PUMP
ACTUATOR
UPLOCK
DOWNLOCK
RELEASE
RAM AIR
TURBINE
GROUND
SAFETY
PIN
HYDRAULIC
PUMP
GENERATOR
GF0710_005
Volume 2 Flight Crew Operating Manual Rev 3, Apr 25, 2005
ELECTRICAL
AC SYSTEM DISTRIBUTION
Rev 3, Apr 25, 2005 Flight Crew Operating Manual Volume 2
ELECTRICAL
ELECTRICAL PANEL
The generators and external power can be controlled manually by selecting the appropriate switch on the electrical panel, located on the overhead panel. GEN 1, 2, 3, 4 and APU GEN switches are normally ON.
External AC Switch
Displays status of AC external power:
AVAIL Light . Comes on to indicate that
external AC power is connected and is the
correct phase, voltage and frequency.
ON Light . Indicates that external power
is being used or can be used by the
airplane power distribution system to
maintain power to the AC busses.
GEN 1, 2, 3, 4 Switches
Used to reset or to turn applicable generator off.
FAIL Light . Indicates a failed generating channel (GEN, GCU, GLC). FAIL light illuminates when fire discharge handle is pulled
OFF Light . Indicates generator operation inhibited.
RAT GEN Switch
Used to reset a fault or to turn RAT generator off. ON Light . Indicates that RAT
FAIL Light . Indicates a generator is on line.
failed generating channel.
OFF Light . Indicates that
OFF Light . Indicates RAT generator operation isgenerator operation inhibited.
inhibited.
NOTE
If RAT GEN is powering AC ESS BUS, and a main generator is available, stow the RAT deploy handle and select RAT GEN to OFF, to transfer AC ESS BUS to the main generator. The RAT GEN will remain armed to ensure RAT GEN priority in the event of loss all main generators.
GF0710_007
Volume 2 Flight Crew Operating Manual Rev 3, Apr 25, 2005
ELECTRICAL
ELECTRICAL MANAGEMENT SYSTEM
Load control consists of smart contactors, Solid State Power Controllers (SSPC) and control logic. Smart contactors and SSPC are functionally similar to a control switch in series with a circuit breaker. The status of all circuit breakers is monitored (trips are automatically displayed) and can be acknowledged and reseted via the Electrical Management System (EMS). EMS Control Display Units (CDU) are installed on the pilot’s and copilot’s side panel.
Page Title
Displayed when a Page NumberActivation Keys
selection has been Displays which page is selected and how Used to switch
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