Transcript Electrical Power Point

With the battery switch off
and no GPU hooked up,
these buses are powered.
When any of the following
doors are opened, the Ground
Handling Bus is energized
through the Battery Transfer
Relay.
1.
2.
3.
4.
Cargo Door Access Panel
Refueling Panel
Main Cabin Door
Auxiliary Hydraulic Pump
Push Button is depressed.
HOT EMER
BAT BUS
+
HOT MAIN
BAT BUS
-
+
Hot Emergency
Battery
-
Hot Main
Battery
GND HDLG
BUS
BTR
If you walk into the cockpit
and observe a GREEN AVAIL
light on the main electrical
panel, these buses are now
powered.
AC BUS 2
AC BUS 1
STBY BUS
INV 1
INV 2
EMER BUS
ESS BUS
OFF
ON
When the GPU is plugged in, the
External Ground Handling Relay
closes taking priority over the Bus
Transfer Relay. The BTR then opens.
HOT EMER
BAT BUS
HOT MAIN
BAT BUS
OVRD
BAT
EMER BAT
CHG
MAIN BAT
CHG
0
1
DC BUS 1
DC
2 DCH
+
-
+
Hot Emergency
Battery
1
Hot Main
Battery
DC BUS 2
2
CH
BAT SEL
EMERG
MAIN
BTC
EGHR
SHED
DC SVCE/UTLY BUS
SHED
DC GEN 1
EXT PWR
AVAIL
DC GEN 2
-
GND HDLG
BUS
BTR
EXTERNAL
POWER
EMER
LT
CALLS
PASS
LAV
SMOKE
CAPT
LAV
CARGO
GND SVCE BUS
DC
AC
If the DC SERVICE BUS push
button is depressed on the
flight attendant panel, then
the DC SERVICE BUS is
powered through the
Service Bus Transfer Relay.
ON
GALLEY LAV
LAT
PASS
DIM
UPR
PASS
AFT
READ
LT
ENTR CARGO
VENT
HOT EMER
BAT BUS
The GPU is now powering
the Ground Handling Bus
and the DC Service Bus.
+
HOT MAIN
BAT BUS
-
+
Hot Emergency
Battery
DC SVCE
BUS
-
Hot Main
Battery
SBTR
EGHR
GND HDLG
BUS
BTR
EXTERNAL
POWER
Now we turn on the
Main Battery Toggle Switch.
AC BUS 2
AC BUS 1
STBY BUS
INV 1
INV 2
EMER BUS
ESS BUS
OFF
ON
HOT EMER
BAT BUS
HOT MAIN
BAT BUS
OVRD
BAT
EMER BAT
CHG
MAIN BAT
CHG
0
1
DC BUS 1
DC
2 DCH
+
-
+
Hot Emergency
Battery
1
Hot Main
Battery
DC BUS 2
2
CH
BAT SEL
EMERG
MAIN
BTC
SHED
DC SVCE
BUS
SBTR
EGHR
DC SVCE/UTLY BUS
SHED
DC GEN 1
EXT PWR
AVAIL
DC GEN 2
-
GND HDLG
BUS
BTR
EXTERNAL
POWER
Now we turn on the
Main Battery Toggle Switch.
AC BUS 2
AC BUS 1
STBY BUS
INV 1
INV 2
EMER BUS
ESS BUS
OFF
ON
HOT EMER
BAT BUS
HOT MAIN
BAT BUS
OVRD
BAT
EMER BAT
CHG
MAIN BAT
CHG
0
1
DC BUS 1
DC
2 DCH
+
-
+
Hot Emergency
Battery
1
Hot Main
Battery
DC BUS 2
2
CH
BAT SEL
EMERG
MAIN
BTC
SHED
DC SVCE
BUS
SBTR
EGHR
DC SVCE/UTLY BUS
SHED
DC GEN 1
EXT PWR
AVAIL
DC GEN 2
-
GND HDLG
BUS
BTR
EXTERNAL
POWER
Now we turn on the
Main Battery Toggle Switch.
AC BUS 2
AC BUS 1
STBY BUS
INV 1
INV 2
EMER BUS
ESS BUS
OFF
ON
HOT EMER
BAT BUS
HOT MAIN
BAT BUS
OVRD
BAT
EMER BAT
CHG
MAIN BAT
CHG
0
1
DC BUS 1
DC
2 DCH
+
-
+
Hot Emergency
Battery
1
Hot Main
Battery
DC BUS 2
2
CH
BAT SEL
EMERG
MAIN
BTC
SHED
DC SVCE
BUS
SBTR
EGHR
DC SVCE/UTLY BUS
SHED
DC GEN 1
EXT PWR
AVAIL
DC GEN 2
-
GND HDLG
BUS
BTR
EXTERNAL
POWER
115 VAC SBY
26 VAC SBY
Now with the main battery
on, these buses are
powered.
AC BUS 1
DC STBY BUS
AC BUS 2
STBY BUS
BUS
OFF
INV
1
INV 1
DC ESS
BUS
DC EMER
BUS
BUS INV
OFF FAULT
INV 2
EMER BUS
SBTC
ESS BUS
HEBTC
OFF
ON
HBTC
HMBTC
HOT EMER
BAT BUS
HOT MAIN
BAT BUS
OVRD
BAT
EMER BAT
CHG
MAIN BAT
CHG
0
1
DC BUS 1
DC
2 DCH
DC BUS
OFF
+
-
+
Hot Emergency
Battery
1
Hot Main
Battery
DC BUS 2
2
CH
DC BUS
OFF
BAT SEL
EMERG
MAIN
BTC
SHED
DC SVCE
BUS
SBTR
EGHR
DC SVCE/UTLY BUS
SHED
SBTC DC
=GEN
Standby
Bus Transfer Contactor
1
EXT PWR
DC GEN 2
HMBTC
= Hot Main Bus Transfer
Contactor
FAULT
AVAIL
FAULT
HEBTC = Hot Emergency Bus Transfer Contactor
HBTC = Hot Battery Transfer Contactor
-
GND HDLG
BUS
BTR
EXTERNAL
POWER
115 VAC SBY
26 VAC SBY
When the external power
pushbutton is depressed,
these buses are powered.
AC BUS 1
DC STBY BUS
AC BUS 2
STBY BUS
BUS
OFF
INV
1
INV 1
DC ESS
BUS
DC EMER
BUS
BUS INV
OFF FAULT
INV 2
EMER BUS
SBTC
ESS BUS
HEBTC
OFF
ON
HBTC
HMBTC
HOT EMER
BAT BUS
HOT MAIN
BAT BUS
OVRD
BAT
EMER BAT
CHG
MAIN BAT
CHG
0
1
DC BUS 1
DC
2 DCH
DC BUS
OFF
+
-
+
Hot Emergency
Battery
1
Hot Main
Battery
DC BUS 2
2
CH
DC BUS
OFF
BAT SEL
EMERG
MAIN
BTC
SHED
DC SVCE
BUS
SBTR
EGHR
DC SVCE/UTLY BUS
SHED
DC GEN 1
EXT PWR
DC GEN 2
FAULT
AVAIL
FAULT
-
GND HDLG
BUS
BTR
EXTERNAL
POWER
115 VAC SBY
ASTR
26 VAC SBY
When the external power
pushbutton is depressed,
these buses are powered.
AC BUS 1
115 VAC BUS 1
115 VAC BUS 2
26 VAC BUS 1
26 VAC BUS 2
INV
1
DC STBY BUS
INV 2
EMER BUS
DC ESS
BUS
DC EMER
BUS
BUS INV
OFF FAULT
INV 1
INVERTER FAIL
SIGNAL
ACBTR
AC BUS 2
STBY BUS
BUS
OFF
#1 INVERTER FAIL
SIGNAL
SDTC
SBTC
ESS BUS
HEBTC
OFF
ON
HBTC
HMBTC
HOT EMER
BAT BUS
HOT MAIN
BAT BUS
OVRD
BAT
EMER BAT
CHG
MAIN BAT
CHG
0
1
DC BUS 1
1
DC BUS 2
DC
2 DCH
DC BUS
OFF
CH
-
DC BUS 1
2
DC BUS
OFF
BAT SEL
EMERG
+
MAIN
BTC
SHED
DC SVCE
BUS
+
UTILITY UTILITY
BUS 1
BUS 2
SBTR
EGHR
DC SVCE/UTLY BUS
SHED
DC GEN 1
EXT PWR
DC GEN 2
FAULT
AVAIL
FAULT
ON
GND HDLG
BUS
BTR
EXTERNAL
POWER
DC BUS 2
INV
2
115 VAC SBY
ASTR
26 VAC SBY
#1 INVERTER FAIL
SIGNAL
When DC Bus 1 is powered the Static
Inverter Override Transfer Contactor
(SDTC) closes and the HBTC (Hot
INV
1
Bat Transfer Contactor opens).
AC BUS 1
115 VAC BUS 1
115 VAC BUS 2
26 VAC BUS 1
26 VAC BUS 2
DC STBY BUS
DC ESS
BUS
DC EMER
BUS
STBY BUS
INV 2
EMER BUS
INVERTER FAIL
SIGNAL
ACBTR
AC BUS 2
INV 1
INV
2
SDTC
SBTC
ESS BUS
HEBTC
OFF
ON
HBTC
HMBTC
HOT EMER
BAT BUS
HOT MAIN
BAT BUS
OVRD
BAT
EMER BAT
CHG
MAIN BAT
CHG
0
1
DC BUS 1
1
DC BUS 2
DC
2 DCH
CH
-
DC BUS 1
2
BAT SEL
EMERG
+
MAIN
BTC
SHED
DC SVCE/UTLY BUS
SHED
DC GEN 1
EXT PWR
DC GEN 2
FAULT
AVAIL
FAULT
ON
DC SVCE
BUS
+
UTILITY UTILITY
BUS 1
BUS 2
DC BUS 2
SBTR
EGHR
Once the DC Buses
are powered,
EXTERNAL
POWER
the associated
lights
are
GND HDLG
BUS
extinguished
on the main electrical
BTR
panel.