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OVERHEAD PANEL (CONT'D)........................................................................................................................ 22/44
EXTERNAL POWER PANEL..........................................................................................................................24/44
FORWARD CABIN..........................................................................................................................................25/44
ECAM ELEC PAGE........................................................................................................................................ 27/44
ECAM ELEC PAGE .......................................................................................................................................36/44
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
ELECTRICAL
PRELIMINARY PAGES - TABLE OF CONTENTS
A318/A319/A320/A321 FLEET DSC-24-PLP-TOC P 2/2
FCOM 19 AUG 10
DSC-24-30 WARNINGS AND CAUTIONS
WARNINGS AND CAUTIONS............................................................................................................................ 1/2
MEMO DISPLAY.................................................................................................................................................2/2
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
ELECTRICAL
DESCRIPTION - GENERAL
A318/A319/A320/A321 FLEET DSC-24-10-10 P 1/2
FCOM 19 AUG 10
GENERAL
Applicable to: ALL
The electrical power system consists of a three-phase 115/200 V 400 Hz constant-frequency AC
system and a 28 V DC system.
Electrical transients are acceptable for equipment.
Commercial supply has secondary priority.
Normally, the system produces alternating current, some of which it then transforms into direct
current for certain applications.
Each of the aircraft's three generators can supply the whole network.
If all normal AC generation is lost, an emergency generator can supply AC power.
If all AC generation is lost, the system can transform DC power from the batteries into AC power.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
ELECTRICAL
DESCRIPTION - GENERAL
A318/A319/A320/A321 FLEET DSC-24-10-10 P 2/2
FCOM 19 AUG 10
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
ELECTRICAL
DESCRIPTION - GENERATION OF ELECTRICAL POWER
A318/A319/A320/A321 FLEET DSC-24-10-20 P 1/4
FCOM 19 AUG 10
AC GENERATORS
Applicable to:
GENERATORS
Two three-phase AC generators (GEN 1, GEN 2), one driven by each main engine through an
integrated drive, supply aircraft electrical power. Each generator can supply up to 90 KVA of power
at 115 and 200 V and 400 Hz.
A third generator (APU GEN), driven directly by the APU and producing the same output as each
main engine generator, can replace either or both main engine generators at any time.
Two Generators Control Units (GCU) control the output of their respective generator. The main
functions of each GCU are :
Control the frequency and voltage ‐ of the generator output.
‐ Protect the network by controlling the associated generator line contactor (GLC).
EXTERNAL POWER
A ground power connector near the nosewheel allows ground power to be supplied to all busbars.
A Ground Power Control Unit (GPCU) protects the network by controlling the external power
contactor.
EMERGENCY GENERATOR
The blue hydraulic circuit drives an emergency generator that automatically supplies emergency
AC power to the aircraft electrical system, if all main generators fail. This generator supplies 5 KVA
of three-phase 115 and 200 V 400 Hz power.
A Generator Control Unit (GCU) :
‐ Keeps the emergency generator at a constant speed,
‐ Controls the generator's output voltage,
‐ Protects the network by the controlling the emergency generator line contactor, and
‐ Controls the emergency generator start-up.
STATIC INVERTER
A static inverter transforms DC power from Battery 1 into one KVA of single-phase 115 V 400 Hz
AC power, which is then supplied to part of the AC essential bus. When the aircraft speed is above
50 kt, the inverter is automatically activated, if nothing but the batteries are supplying electrical
power to the aircraft, regardless of the BAT 1 and BAT 2 pushbutton positions.
When the aircraft speed is below 50 kt, the inverter is activated, if nothing but the batteries are
supplying electrical power to the aircraft, and the BAT 1 and BAT 2 pushbuttons are both on at
auto.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
ELECTRICAL
DESCRIPTION - GENERATION OF ELECTRICAL POWER
　
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