BLOCK 4 - ELECTRICAL SYSTEMS Flashcards
Electrical Systems safety
Avoid contact with electrical circuits. Do not touch victim or equipment. Turn off power source or pull out plug using a belt.
Voltage
causes current to flow in a circuit.
electrical current
Movement of electrical charge through the circuit.
Measured in amps.
Resistance
causes an opposite flow of electricity in a circuit.
Measured in ohms.
Hertz
unit of frequency equal to one cycle per second.
Electrical Bus function
Distribution point of electrical system.
where the battery and generators are connected.
(EPMP) stand for? Location? Function
Electric Power Management Panel;
left overhead panel;
the major switch control of electrical bus.
How many Electric Power Management Panel (EPMP) displays? Display example?
13 digital displays
battery, AC, DC, voltage, amps, frequencies
How many Alternators are there? Function? Location?
- Provide electrical power to air craft during flight.
1 on each engine and 1 in APU.
2 Converters location.
in tail compartment. left and right.
Function of 2 Converters?
………..,..
Power distribution box (PDB) location and function
Right hand radio rack. Load center of electrical systems.
How many circuits breakersdoes Power distribution box (PDB) have?
56 circuit breakers
TRU stand for?
Transformer Rectifying Unit
Emergency Inverter function? Location?
Use for emergency, it powers only essential equipment . Located on floorboard.
