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low. The External DC receptacle is located at the rear of the aircraft near the right
engine pylon (see Figure 7-18).
External DC Receptacle
Figure 7-18
P604_07_056
ELECTRICAL
7-26 For Training Purposes Only
Jan 04
P I LOT T R A I N I N G GU I D E
When connected, external DC ground power automatically supplies the APU BATT
DIR BUS through the External DC contactor, and the BATT BUS when the BATT
MASTER switch is selected ON. The DC EXTERNAL POWER white IN USE light
on the ELECTRICAL POWER panel illuminates whenever DC external power is
connected.
External DC ground power is identified on the DC Electrical Synoptic page by the
symbol EXT DC. This symbol appears only if DC external power is connected to the
aircraft.
External DC Power Connected
Figure 7-19
ELECTRICAL POWER
BATT MASTER EXT. POWER
APU GEN GEN 2
OFF/
RESET
OFF/
RESET
ON
ON
OFF
ESS. POWER DC POWER
AC ESS XFER MAIN BUS TIE
AC POWER
GEN 1
OFF/
RESET
AVAIL
IN USE
IN
USE
ON
AUTOXFER
FAIL
OFF
FAIL
OFF
ALTN CLOSED
ON
AC DC
P604_07_040
DC ELECTRICAL
TRU 1
BUS 1
BUS 2
UTIL BUS 1
UTIL BUS 2
EMER BUS
APU BATT
DIR BUS
MAIN BATT
DIR BUS
AC BUS 1 AC BUS 2 AC ESS BUS
TIE
ESS BUS
BATT BUS
0 V
0 A
TRU 2
0 V
0 A
ESS
TRU 2
0 V
0 A
ESS
TRU 1
0 V
0 A
MAIN
BATT
24 V
18 A
APU
BATT
27 V
0 A
EXT
DC
28 V
19 A
ELECTRICAL
For Training Purposes Only
May 03
7-27
P I LOT T R A I N I N G GU I D E
Circuit Breakers
Description
Electrical power distribution is accomplished through five circuit breaker panels. Four
circuit breaker panels are installed in the flight deck and the fifth panel is in the aft
equipment bay. They are identified as follows (see Figure 7-20):
• Circuit Breaker Panel 1 (CBP-1)
• Circuit Breaker Panel 2 (CBP-2)
• Circuit Breaker Panel 3 (CBP-3)
• Circuit Breaker Panel 4 (CBP-4)
• Circuit Breaker Panel 5 (CBP-5)
Electrical equipment protection is provided by conventional thermal circuit breakers.
When a circuit breaker is tripped, a white collar is exposed. Depending on airplane
completion specification, circuit breakers may also be located in other parts of the
airplane. Should a circuit breaker trip while the airplane is in flight, the circuit breaker
should be allowed to cool for as long as possible before resetting.
Do not attempt more than one reset of a circuit breaker.
NOTE
ELECTRICAL
7-28 For Training Purposes Only
May 03
P I LOT T R A I N I N G GU I D E
Circuit Breaker Panels (CBPS)
Figure 7-20
CBP-3 CBP-4
CBP-2 CBP-1
CBP-1
(LOWER)
CBP-5
AC ESS
BUS
DC ESS
BUS
AC BUS 2
DC BUS 2
BATT BUS
AC BUS 1
DC BUS 1
BATT BUS
EMERGENCY
MAIN BATT
DIR BUS
APU BATT
DIR BUS
P604_07_011
ELECTRICAL
For Training Purposes Only
May 03
7-29
P I LOT T R A I N I N G GU I D E
Circuit Breaker Grid System
A circuit breaker can be located, when called for in a procedure, by using the grid
reference on the circuit breaker panel.
For example, the “VOLTS & FREQ IND” circuit breaker location is identified as
(3A13), and therefore found on panel CBP-3, row A, column 13 (see Figure 7-21).
Circuit Breaker Grid System
Figure 7-21
CBP-3
ESS
TRU
1
STAB CH 2
HSTA
ESS HYD
PUMP
SUPPLY
VOLTS
& FREQ
IND
AC
ESS
FEED
L
DET
L
PITOT
PITOT
STBY
L
AOA
L
STATIC
R
DET
L
HTR
WIND
CTR
PNLS
CB
PNLS
PLT
PNLS
O/H
PNLS
IRU
1 TCAS
ICE
DET
1
ENG
IGN
A
IRU
FAN
1
FDR
PWR
SURF
POS
IND L
26 VAC
ESS
XFMR
A
B
C
D
115VAC ESS BUS
115VAC ESS BUS
115VAC ESS BUS
26VAC ESS BUS 115VAC ESS BUS
115VAC ADG BUS
B/LEAK HEATERS INTEG LTS
1 2 3 4 5 6 7 8 9 10 11 12 13
1 2 3 4 5 6 7 8 9 10 11 12 13
1 2 3 4 5 6 7 8 9 10 11 12 13
1 2 3 4 5 6 7 8 9 10 11 12 13
10
3 3 3
3 3 5 3
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庞巴迪挑战者604机组操作手册 CL_604-ELECTRICAL(11)
