Systems Guide

Aerosoft

Airbus A320/A321

SYSTEMS

Systems guide

Vol

04-03-35

28 October 2014

 The generator indications (GEN 1 & GEN 2) show the load (%), voltage (V) and frequency (HZ) normally in

green, for any abnormal value the same is shown in amber. Connection lines will show if the generator is

online.

 The External Power indication will show voltage (V) and frequency (HZ) and connecting lines but only

when external power is available.

ELEC OVERHEAD PANEL

All the normal operations for the electrical system are done via pushbuttons on the overhead ELEC panel.

 The battery voltage for both batteries is shown in the two small LCDs. These displays will always be on

when the battery is installed.

 The BAT pbs (BAT 1 & BAT 2) are off when in AUTO mode. The batteries will automatically connect when

the APU is started without EXT PWR, when voltage drops below 26.5 (to charge) or when the aircraft is

on ground and no other electrical sources are available. They will show FAULT when the batteries are

disconnected because of a fault. When the pb is clicked OFF will show and the battery will be

disconnected.

 The IDG pb (IDG 1 & IDG 2) will disconnect the generator from the engine, only ground maintenance can

reset this. The switch is protected by a switch guard.

 The EXT PWR pb will be off when no external power is available. It will show AVAIL when power is

available. When pushed ON will show and the external power will be connected to the aircraft buses. It is

recommended to deselect EXT PWR before the ground crew disconnects.

 The ACC ESS pb makes it possible to select a different source for the aircraft essential bus. When pushed

ALTN will show and AC2 will be selected instead of AC1.Commercial and Galley are not simulated. They

connect the cabin systems (galleys, toilets, entertainment system etc) to the buses.



 The GEN pbs (GEN 1 & GEN 2) are dark in AUTO mode. FAULT will show when the generator is

inoperative or the engine is not running. When pushed OFF will show and the generator will be

disconnected from the AC bus.