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Circuit Breaker Indication and Control (CBIC) . . . . . . . . . . . . . . 6.10.6
System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.1
AC Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.1
AC Electrical System Power Sources . . . . . . . . . . . . . . . . . . . 6.20.1
AC Buses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.4
DC Electrical Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.4
DC Buses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.5
Flight Control DC Electrical System . . . . . . . . . . . . . . . . . . . 6.20.5
Electrical Power Distribution and Conversion . . . . . . . . . . . . . . . 6.20.6
Electrical Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.6
787 Electrical System Schematic . . . . . . . . . . . . . . . . . . . . . . 6.20.8
Electrical Power Conversion . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.9
Standby Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.11
Standby Electrical System Schematic . . . . . . . . . . . . . . . . . 6.20.12
Ram Air Turbine (RAT) Generator . . . . . . . . . . . . . . . . . . . 6.20.12
Main Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.13
Electrical Load Management . . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.13
Bus Power Control Units (BPCU) . . . . . . . . . . . . . . . . . . . . 6.20.13
Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.13
Generator Control Units (GCU) . . . . . . . . . . . . . . . . . . . . . . 6.20.14
Load Shedding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.20.15
Cabin Systems/Utility Power and IFE/PASS Seats . . . . . . . 6.20.15
787 Flight Crew Operations Manual
6.TOC.0.2 Boeing Proprietary
Electrical -
Table of Contents
EICAS Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.30.1
Electrical EICAS Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.30.1
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.30.1
Cabin System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.30.1
787 Flight Crew Operations Manual
Electrical Chapter 6
Controls and Indicators Section 10
Boeing Proprietary 6.10.1
6.10 Electrical-Controls and Indicators Electrical Panel
ON –
• Unpowered airplane on the ground:
• powers loads designated for use on battery power
• allows the APU to be started
• one main display is powered (lower center Display Unit (DU)).
1 BATTERY Switch
DRIVE DRIVE DRIVE DRIVE
IFE/PASS CABIN/
SEATS UTILITY
OFF
ON
BATTERY
ELECTRICAL
AVAIL
FAULT
START
ON
OFF
APU
L2 DRIVE DISC R1
OFF
ON OFF
ON
OFF
ON
OFF
ON
L R
ON ON
AVAIL
L R
L1 R2
ON
OFF
ON
OFF
GEN CTRL
R1 R2
ON
OFF
ON
OFF
AC BUSES
GEN CTRL
L1 L2
AVAIL
ON
FWD EXT PWR AFT EXT PWR
APU GEN
OVERHEAD PANEL
1
2
3
4
6
8
9
11
5
7
10
12
13
14
16
15
17
18
PRELIMINARY
787 Flight Crew Operations Manual
Electrical -
Controls and Indicators
6.10.2 Boeing Proprietary
• Powered airplane (in flight or on the ground) when AC power is removed
or lost:
• the standby power loads and emergency lighting are powered
• all main display units are powered except lower center.
OFF –
• opens the main battery relay to turn battery power off after a 1-2 (TBD)
minute time delay
• the EICAS message ELEC BATTERY OFF displays.
Illuminated (amber) – the battery switch is OFF.
ON – powers IFE and passenger seat systems when AC power is available and
load management priorities support these loads.
OFF – removes power from IFE and passenger seat systems.
Illuminated (amber) – the IFE/PASS SEATS Power switch is OFF.
Push – (with AVAIL light illuminated) closes external power contactor (if not
closed already per ground handling and / or ground service modes) and "external
power ON mode" loads are powered.
Push – (with ON light is illuminated) opens external power contactor (unless it is
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787机组操作手册Flight Crew Operations Manual 2(38)
