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(4) Bus indication
It is normally in green. It becomes amber, when the corresponding bus is off.
SHED appears in amber, when AC or DC SHED ESS BUS is off.
(5) TR 1 (2) indication
(A) It is normally in white. It becomes amber when legends B and C do.
(B) The TR voltage is normally in green. It becomes amber, if V > 31 V, or V < 25 V.
(C) The TR current is normally in green. It becomes amber, when the TR current ≤ 5 A.
(6) ESS TR indication
This legend follows the logic of the above-noted TR 1 (2) legend.
The voltage and current are not displayed, when the essential TR contactor is open.
(7) EMER GEN indication
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
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A318/A319/A320/A321 FLEET DSC-24-20 P 30/44
FCOM 19 AUG 10
(A) This legend is normally in white. It becomes amber when either the voltage or frequency
legend becomes amber.
(B)
This legend is normally in green. It becomes amber if :
‐ V > 120 V or
‐ V < 110 V.
(C)
This legend is normally in green. It becomes amber if :
‐ F > 410 Hz or
‐ F < 390 Hz .
Voltage and frequency indications are not displayed when the EMER GEN line contactor
is open.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
ELECTRICAL
CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-24-20 P 31/44
FCOM 19 AUG 10
(8) GEN 1/2 indications
‐ GEN pushbutton switch is OFF :
GEN is amber.
OFF indication is white
1 or 2 indication is white if the associated engine is running, amber if it is not.
‐ GEN pushbutton switch is ON.
(A) GEN1 or GEN2, normally white, becomes amber if any of the following legends
become amber.
(B) The load legend, normally green, becomes amber if load > 100 %.
(C) The voltage legend, normally green, becomes amber if V > 120 V or V < 110 V.
(D) The frequency legend, normally green, becomes amber if F > 410 Hz or F < 390 Hz.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
ELECTRICAL
CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-24-20 P 32/44
FCOM 19 AUG 10
(9) APU GEN indications
‐ When the APU MASTER switch is OFF this legend is white regardless of the position of the
APU GEN pushbutton switch.
‐ When the APU MASTER switch is ON, and the APU GEN pushbutton switch is OFF:
The APU GEN legend is amber.
The OFF legend is white.
‐ When the APU MASTER switch is ON and the APU GEN pushbutton switch is ON :
The indications are the same as for GEN 1 (2).
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
ELECTRICAL
CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-24-20 P 33/44
FCOM 19 AUG 10
(10) EXT PWR indications
‐ External power is not available.
‐ When external power is available :
(A) This legend is normally white, but becomes amber, if either of the following legends
turns amber.
(B) This legend is normally green, but becomes amber, if V > 120 V or if V < 110 V.
(C) This legend is normally green, but becomes amber, if F > 410 Hz or if F < 390 Hz.
‐ This legend appears during the static inverter test, and when pressing the ELEC pushbutton
on the ECAM control panel while ESS BUSES are supplied by the batteries. It is normally
green, but becomes amber, if :
V < 110 V or V> 120 V.
F < 390 Hz or F > 410 Hz.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
ELECTRICAL
CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-24-20 P 34/44
FCOM 19 AUG 10
(11) IDG indications
(A) IDG1 (2) legend
The IDG legend is normally white, but becomes amber, if :
• Oil outlet temperature > 185 °C.
• Oil pressure gets too low.
• IDG becomes disconnected.
The 1 or 2 is white if the corresponding engine is running, amber if it is not and the
FADEC is powered.
(B) DISC/LO PR indication
The DISC legend appears in amber, when the IDG is disconnected.
LO PR appears in amber, when IDG low pressure is detected and the associated engine
is running.
(C) Oil outlet temperature
This legend is normally in green, but appears amber, if T > 185 °C.
It flashes, if 147 °C < T < 185 °C (advisory).
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
ELECTRICAL
CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-24-20 P 35/44
FCOM 19 AUG 10
(12) GALLEY SHED indication
This legend appears in white when :
　
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