ATR 42 Model : 400/500
GENERAL
ELECTRICAL SYSTEM
P 1/2
NOV 96
001
1.06
.
10
The electrical power generation is provided by the following sources :
- Main and emergency batteries
- Two engine-driven DC starter/generators
- Two AC wild frequency generators
- Two external power units (AC and DC)
In addition, two static inverters (supplied by the DC system) provide constant
frequency AC power.
The ACW electrical system can also supply DC electrical system through a
transformer rectifier unit (TRU).
The electrical distribution is ensured by busses which feed equipments.
Two seperate networks (left and right) run individually and can be connected in case
of generation failure thanks to bus tie contactors (BTC).
AA
R
AviationLearning.net
01/07//2018 REV 1 These notes are not revised after issue For Training Purposes Only
Page 230 of 764