Electrics Flashcards
Max KVA for Gen 1 & 2 & APU Gen?
115 kva
Emer Gen max KvA (Green HYD on elec pump)
8kva
Emer Gen max kva (Green HYD on RAT less than 260 kts)
3.5kva
What drives the emergency generator?
green hydraulic system
What can supply the AC Ess bus?
AC bus 1, AC bus 2, dc ess bus and emergency generator
On Battery power only, which busses are supplied?
DC ESS bus, DC land recovery, AC ESS bus, AC land recovery.
What causes the RAT to auto-extend?
Loss of g&b, loss of g&y, emer elec config, loss of both engines.
Which busses are supplied by the emer gen?
ac and dc ess.
What does the BUS TIE pushbutton do when selected OFF?
the three bus tie contactors are set to open
If the essentials TR fails what supplies the DC ESS bus?
TR1 replaces the ESS TR
Minimum battery volts at the start of the day?
25.5 v
Approximately how long does it take to charge the batteries?
20 minutes
Which busbars are powered when LAND RECOVERY is pressed?
AC land recovery, dc land recovery