Electrical Flashcards
How many and what are the possible aircraft source of power generation?
There are 5.
2 engine generators, 1 APU generator, 1 emergency generator and 1 static inverter powered by Battery 1.
How many engine driven generators are there?
2
What is the purpose of the Integrated Drive Generator?
The Generators maintain a constant speed via an IDG
Each Generator supplies what type of current?
AC current to their respective busses
What converts the AC to DC for the DC busses?
Transformer rectifiers or TR1 and TR2
Which DC bus powers the DC Bat Buss?
DC Bus 1
What feeds the DC Bat?
Either the DC Bus 1 or Bat 1 & 2. It can also feed the Batteries
What are the 2 essential busses?
DC Essential Bus (fed by DC Bus 1) and AC Essential Bus (fed by AC 1)
Other than the engine driven generators, what other units can supply the electrical network?
APU Generator and an external power source while on the ground
What is the order of priority with the electrical power sources?
First the Engines then the
External Power and lastly, the APU
What is a back up to the system in an emergency in flight? What powers this system?
Emergency electrical generator (EMER GEN) powered by the Rat
What does the Static Inverter do?
Converts DC to AC (via Bat 1)
How does the EMER GEN get it’s power from the Rat?
The rat drives the blue hydraulics which then powers the Emergency Electrical Generator
What 2 systems does the Emergency Generator supply power to?
The Essential Transformer and the AC Essential
What is the minimum Rat speed?
140kts in flight and on the ground, 100 kts
In a dual AC Bus failure, does the Rat extend automatically?
Yes
What does the Essential TR do?
Powers the DC Essential Bus from the EMER GEN in case of failure
What is the other panel on the overhead panel related panel to the ELEC panel?
The EMER ELEC PWR panel for emergency
