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2
GEN
APU
GEN
3
RAT GEN
P
R
I
O
R
I
T
Y
only if it has been deployed and RAT GEN ON .
AC BUS 1
V
KVA
GEN
1
GEN
2
AC BUS 2
V
KVA
0
GEN
3
AC BUS 3
V
KVA
V
KVA
GEN
4
AC BUS 4
GEN
V
KVA
0
0
0 HZ
APU
RAT GEN 115
400
V
HZ
AC ELECTRICAL
AC ESS BUS
0
0
0
0
0
0
0
AC BUS 1
V
KVA
115
12
GEN
1
GEN
2
AC BUS 2
V
KVA
115
12
GEN
3
AC BUS 3
V
KVA
115
12
V
KVA
115
15
GEN
4
AC BUS 4
AC ESS BUS
GEN
V
KVA
0
0
0 HZ
APU
AC ELECTRICAL
GEN
1
GEN
2
AC BUS 2
V
KVA
115
12
GEN
3
AC BUS 3
V
KVA
115
12
GEN
4
AC ESS BUS
GEN
V
KVA
0
0
0 HZ
APU
AC ELECTRICAL
AC BUS 1 AC BUS 4
V
KVA
0
0
V
KVA
115
12
AC BUS 1
GEN
1
GEN
2
GEN
3
GEN
4
AC ESS BUS
GEN
V
KVA
0
0
0 HZ
APU
AC ELECTRICAL
V
KVA
0
0
V
KVA
0
0
V
KVA
115
24
V
KVA
115
24
AC BUS 4
AC BUS 2 AC BUS 3
GEN
1
GEN
2
GEN
3
GEN
4
AC ESS BUS
GEN
APU
AC ELECTRICAL
V
KVA
0
0
0 HZ
V
KVA
V
KVA
V
KVA
V
KVA
0
0
0
0
0
0
AC BUS 1 AC BUS 4
115
32
GEN
1
GEN
2
GEN
3
GEN
4
AC ESS BUS
GEN
APU
AC ELECTRICAL
V
KVA
V
KVA
0
0
AC BUS 1 AC BUS 4
V
KVA
115
32
400HZ
0
0
V
KVA
0
0
V
KVA
0
0
SHED SHED
AC BUS 2 AC BUS 3
SHED SHED
AC BUS 2 AC BUS 3
OFF
ON
RAT GEN
ELECTRICAL
Rev 3, Apr 25, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
07−10−21
AC BUS FEED SYSTEM (CONT'D)
EXT AC Power
external AC power is available 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.
NOTE
The ON light will remain illuminated, even
when other source(s) is powering AC
busses, to indicate that the priority system
can call upon EXT AC if needed.
AVAIL Light − Comes on to indicate that
GF0710_031
GEN
1
GEN
3
GEN
4
AC ELECTRICAL
V
KVA
0
0
GEN
2
GEN
V
KVA
HZ
APU
V
KVA
0
0
AC BUS 1
AC BUS 2 AC BUS 3
AC BUS 4
AC ESS BUS
V
KVA
115
400HZ
GEN
1
GEN
3
GEN
4
AC ELECTRICAL
GEN
2
AC ESS BUS
EXT
AC 28
0
0
0
V
KVA
0
0
V
KVA
0
0
EXT
AC
AC BUS 1 AC BUS 4
AC BUS 2 AC BUS 3
V
KVA
0
0
V
KVA
0
0
V
KVA
HZ
115
23
400
V
KVA
0
0
V
KVA
0
0
GEN
APU
V
KVA
115
0
400HZ
EXT
AC
V
KVA
115
0
400HZ
EXT
AC
EXT
AC
V
KVA
115
0
400HZ
V
KVA
115
400HZ
28
ON
AVAIL
EXT AC
ON
EXT AC
ON
EXT AC
ELECTRICAL
Flight Crew Operating Manual Rev 3, Apr 25, 2005
CSP 700−5000−6
Volume 2
07−10−22
DC SYSTEM
There are six primary DC power sources: four identical transformer rectifier units (TRU), an Avionics
battery and an APU battery. All sources are routed through the DC power center (DCPC).
　
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