Embraer ERJ 190-300/190-400 Electrical Power System Flashcards

Flashcards covering the Electrical Power system of the Embraer ERJ 190-300/190-400 aircraft, focusing on AC/DC Generation, External Power, and Electrical Load Distribution based on Maintenance Training Presentation.

What voltage DC does the DC generation system supply?

28 VDC

What are the two external power receptacles used for?

Supply of external AC or DC power to the aircraft.

What is the main function of the AC power distribution system?

Provides AC power to the aircraft loads during normal and emergency operations.

What is the main function of the DC power distribution system?

Provides DC power to the aircraft loads during normal and emergency operations, allowing for switching, isolation, and data transmission.

What does EPGDS stand for?

Electrical Power Generation and Distribution System

List the components of AC Power Sources.

LH/RH IDG, APU Gen, RAT Gen, AC External Power

What are the components of primary distribution system?

LICC, RICC, EICC, AICC

What are the coponents of secondary distribution system?

SPDA 1, SPDA 2, LH/RH CBP

List the components of DC Power Sources:

Batteries, DC GPU (optional)

What is the function of the AC generation system?

Provides primary three-phase, 115/200 VAC, 400 Hz electrical AC power for the aircraft AC loads.

What is the purpose of the APU AC generation system?

Primarily used on the ground for maintenance or flight preparation, can also be used in-flight with altitude restrictions or as a backup.

What is the purpose of the RAT in the emergency AC power generation?

Ensures essential loads are supplied with power for an unlimited time if main AC generators are lost.

What are the kVA ratings for IDG 1 and IDG 2?

50/50 kVA

What is the kVA rating for the APU GEN?

37/50 kVA

What is the kVA rating for RAT?

15 kVA

What is the function of the DC generation system?

Supplies 28 VDC to equipment using DC power and charges the batteries.

What do TRUs do in the DC generation system?

Convert AC to DC to supply the DC buses.

What is the purpose of the main batteries in the DC generation system?

Alternative sources of DC current for essential loads when TRU power isn't available, Battery 2 also supplies power for APU starts.

What is the voltage and Ah rating of the main batteries?

22.8 vDC, 22.0 Ah

What does ICC stand for, and what does it do?

Integrated Control Center, provides power distribution and protection for airplane systems and SPDAs.

Name the four ICCs.

Left Integrated Control Center (LICC), Right Integrated Control Center (RICC), Emergency Integrated Control Center (EICC), Auxiliary Integrated Control Center (AICC)

What does SPDA stand for, and what is its function?

Secondary Power Distribution Assembly, receives power from ICCs and redistributes it to airplane systems.

Where are SPDA 1 and SPDA 2 located?

SPDA 1 is in the forward electronics bay, SPDA 2 is in the center electronics bay.

What is the function of the external AC power supply?

Provides electrical power for operations on the ground.

Where is the external AC power receptacle located?

On the left side of the forward fuselage section.

What is the purpose of the Ground Service Bus?

Allows powering of only the AC and DC ground service buses when an external AC cart is connected and AC BUS 1 is not powered.

What is the purpose of electrical outlets in the aircraft?

Supply electric power for maintenance, service equipment, and PEDs.

Where are the cockpit electrical power outlets located?

Above the CBP (Circuit Breaker Panel) on the RH and LH sides of the cockpit and one outlet installed in forward and middle electronic compartment

How can pilots and maintenance personal activate the cockpit electrical power outlets?

By actuating the PC (Personal Computer) outlet control switch located on the top of the copilot’s outlet

What is the reason for galley electrical outlets?

To supply electric power for cleaning, maintence and service equipment in the aircraft when it is on the ground

What is the purpose of the windscreen/stowage electrical outlet?

To supply electrical power for maintenance and service equipment used in the aircraft on the ground.