The aircraft electrical power is normally supplied in flight by two
integrated drive generators (IDG) ; each of them is driven by one engine.
A third auxiliary generator driven by the APU can replace either main
generator.
The generators supply the alternating current distribution network.
Three transformer rectifiers supply the direct current distribution
network. In the event of a major failure, a standby generator or three
batteries and a static inverter enable supply of the services required for
aircraft control.
On ground, the A/C can be supplied by an electrical ground power control
unit. Independent power supply is also possible from the auxiliary
generator.
The aircraft electrical network comprises :
- A 115/200 Volt 400 Hz three-phase AC network,
- A 115 Volt 400 Hz single-phase AC network,
- A 26 Volt 400 Hz single-phase AC network,
- A 28 Volt DC network.