CH05 A320 Electrical Flashcards by S M

ELEC_002

What are the power sources for the AC Buses during normal operating conditions for

AC Buses 1 & 2?

▪ _____ _____ Generator (___ 1 or 2).

▪ ______ power
▪ ______ generator

▪ Respective Engine Generator (IDG 1 or 2).

▪ External power
▪ APU generator

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ELEC_002

What are the power sources for the AC Buses during normal operating conditions for the

AC ESS Bus?

▪ _____ by AC Bus __
▪ __ __ __ manually, when ___ ___ ___ pb is selected to ____

▪ ___ ____ __ automatically, via the ___ switching logic

ELEC_002

What are the power sources for the AC Buses during normal operating conditions for the

AC ESS Bus?

▪ Normally by AC Bus 1
▪ AC Bus 2 manually, when AC ESS FEED pb is selected to ALTN

▪ AC Bus 2 automatically, via the auto switching logic

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ELEC_003

Describe the electrical system’s power priority?

1st Respective ______ ______

2nd _____ power (If selected ___)

3rd ____ generator

4th _____ engine generator

ELEC_003

Describe the electrical system’s power priority?

1st Respective engine generator

2nd External power (If selected ON)

3rd APU generator

4th Opposite engine generator

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ELEC_004

Recall the functions of the BUS TIE pb when selected to AUTO?

AUTO (____ ____) – Power priority order logic is ______.

ELEC_004

Recall the functions of the BUS TIE pb when selected to AUTO?

AUTO (light out) – Power priority order logic is active.

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ELEC_004

Recall the functions of the BUS TIE pb.

OFF – Power priority order logic is _______.

AC Bus 1 and 2 can only be powered by their _______ engine generator.
____ or _____ generator power _____ be applied to the aircraft.

ELEC_004

Recall the functions of the BUS TIE pb.

OFF – Power priority order logic is deactivated.

AC Bus 1 and 2 can only be powered by their respective engine generator.
External or APU generator power cannot be applied to the aircraft.

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ELEC_005

What is the purpose of the AC ESS FEED pb?

The AC ESS FEED pb is used to _____ command AC Bus ___ to power the AC ESS Bus.

When in the “light out” configuration:

▪ AC Bus __ powers AC ESS Bus. This the ______ configuration.
▪ Should AC Bus 1 fail, AC Bus __ automatically powers AC ESS BUS.

ELEC_005

What is the purpose of the AC ESS FEED pb?

The AC ESS FEED pb is used to manually command AC Bus 2 to power the AC ESS Bus.

When in the “light out” configuration:

▪ AC Bus 1 powers AC ESS Bus. This the normal configuration.
▪ Should AC Bus 1 fail, AC Bus 2 automatically powers AC ESS BUS.

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ELEC_005

Recall the purpose of the AC ESS FEED pb.

When in the “light out” configuration:

▪ AC Bus __ powers AC ESS Bus. This the ______ configuration.
▪ Should AC Bus 1 fail, AC Bus __ automatically powers AC ESS BUS.

ELEC_005

Recall the purpose of the AC ESS FEED pb.

When in the “light out” configuration:

When in the “light out” configuration:
▪ AC Bus 1 powers AC ESS Bus. This the normal configuration.
▪ Should AC Bus 1 fail, AC Bus 2 automatically powers AC ESS BUS.

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ELEC_005

Recall the purpose of the AC ESS FEED pb.

When selected to ALTN:
▪ AC Bus ___ is commanded to power AC ___ Bus regardless of the status of AC Bus __.

▪ _____ appears only when the pb is selected.

ELEC_005

Recall the purpose of the AC ESS FEED pb.

When selected to ALTN:

When selected to ALTN:
▪ AC Bus 2 is commanded to power AC ESS Bus regardless of the status of AC Bus 1.

▪ ALTN appears only when the pb is selected.

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ELEC_007

What information is provided by the electrical power legends on the ECAM ELEC page for

GEN 1 & GEN 2 and APU GEN?

▪ ______ of output

▪ ______

ELEC_007

What information is provided by the electrical power legends on the ECAM ELEC page for

GEN 1 & GEN 2 and APU GEN?

▪ Percentage of output

▪ Voltage

▪ Frequency

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ELEC_007

What information is provided by the electrical power legends on the ECAM ELEC page for:

o EXT PWR:

▪ ______

NOTE: The ____ ____ legend appears whenever the____ _____ cord is connected to the aircraft and Volts and Freqs meet requirements.

ELEC_007

What information is provided by the electrical power legends on the ECAM ELEC page for:

o EXT PWR:

▪ Voltage

▪ Frequency

NOTE: The EXT PWR legend appears whenever the external power cord is connected to the aircraft and Volts and Freqs meet requirements.

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ELEC_008

Recall the display on the ECAM ELEC page of an unpowered AC or DC ESS SHED Bus.

The word _____ (____) appears under__ ___ or __ ___ buses only when the respective SHED Bus has ________ shed.

(Shed meaning ________).

ELEC_008

Recall the display on the ECAM ELEC page of an unpowered AC or DC ESS SHED Bus.

The word SHED (amber) appears under AC ESS or DC ESS buses only when the respective SHED Bus has automatically shed.

(Shed meaning unpowered).

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ESV ELEC 08

The AC ESS SHED and DC ESS SHED Buses are auto shed during an approach in emergency electircal configuration. What evidence would you have of this occuring when referencing the ELEC page?

ESV ELEC 08

The AC ESS SHED and DC ESS SHED Buses are auto shed during an approach in emergency electircal configuration. What evidence would you have of this occuring when referencing the ELEC page?

“SHED” appears in amber underneathe the respective AC ESS or DC ESS Bus indication

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ELEC_009

Explain the meaning of GALLEY SHED display on the ECAM ELEC page

o In-flight – When on ___ generator power, GALLEY SHED indicates that the galley’s ___ bus has been ______ depowered. However, its ______ bus remains powered.

ELEC_009

Explain the meaning of GALLEY SHED display on the ECAM ELEC page

o In-flight – When on single generator power, GALLEY SHED indicates that the galley’s main bus has been automatically depowered. However, its secondary bus remains powered.

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ELEC_009

Explain the meaning of GALLEY SHED display on the ECAM ELEC page

o On the Ground –

With either external or APU generator power in use, both ____ and _____ galley buses remain powered.

ELEC_009

Explain the meaning of GALLEY SHED display on the ECAM ELEC page

o On the Ground –

With either external or APU generator power in use, both main and secondary galley buses remain powered.

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ELEC_009

Explain the meaning of GALLEY SHED display on the ECAM ELEC page

o When the GALLEY pb is selected OFF:

GALLEY SHED indicates that the galley’s ____ and _____ buses are depowered.

ELEC_009

Explain the meaning of GALLEY SHED display on the ECAM ELEC page

o When the GALLEY pb is selected OFF:

GALLEY SHED indicates that the galley’s main and secondary buses are depowered.

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ELEC_010

Recall the cautions associated with selecting the guarded IDG 1 and IDG 2 pbs:

To avoid damage to the IDG disconnect mechanism DO NOT:
▪ Disconnect unless the engine is _____ or is ____-______

▪ Hold the pb(s) for more than ____ (_) seconds.

ELEC_010

Recall the cautions associated with selecting the guarded IDG 1 and IDG 2 pbs:

To avoid damage to the IDG disconnect mechanism DO NOT:
▪ Disconnect unless the engine is operating or is wind-milling.

▪ Hold the pb(s) for more than three (3) seconds.

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ELEC_011

Explain the color coding convention of the circuit breakers for a Green circuit breaker?

o Green:

▪ Circuit breaker is _______ by the _____ _____ ____ (___s).

▪ _______ message appears ECAM when CB is open for more than __ minute.

ELEC_011

Explain the color coding convention of the circuit breakers for a Green circuit breaker?

o Green:

▪ Circuit breaker is monitored by the Flight Warning Computers (FWCs).

▪ C/B TRIPPED message appears ECAM when CB is open for more than 1 minute.

ELEC_011

Explain the color coding convention of the circuit breakers for a

Black circuit breaker?

o Black:

▪ Circuit breaker is not ______ by the ____s therefore, no “_______” message is generated.

▪ The ______ which the circuit breaker supports may be ________ by the FWCs

ELEC_011

Explain the color coding convention of the circuit breakers for a

Black circuit breaker?

o Black:

▪ Circuit breaker is not monitored by the FWCs therefore, no “C/B TRIPPED” message is generated.

▪ The system which the circuit breaker supports may be monitored by the FWCs

Flight Warning Computers (FWCs)

ELEC_011

Explain the color coding convention of the circuit breakers for a Yellow circuit breaker?

o Yellow:
▪ ______ when flying on ______ only.

ELEC_011

Explain the color coding convention of the circuit breakers for a Yellow circuit breaker?

o Yellow:

▪ Pulled when flying on batteries only.

ELEC_011

Explain the color coding convention of the circuit breakers for a

Red circuit breaker?

o Red:
▪ The red cap around the circuit breaker prevents it from being ____.

▪ Provide circuit protection to the ___ ___ ___ (___).

ELEC_011

Explain the color coding convention of the circuit breakers for a

Red circuit breaker?

o Red:
▪ The red cap around the circuit breaker prevents it from being reset.

▪ Provide circuit protection to the Wing Tip Brakes (WTB).

ELEC_012

How is Generator 1 affected when the GEN 1 LINE pb is selected OFF?

o ____ generator 1’s line contactor, in affect _____ it from the remainder of the aircraft’s electrical system.

o Generator 1 is limited to only powering ___ fuel pump in ____ wing tank.

ELEC_012

How is Generator 1 is affected when the GEN 1 LINE pb is selected OFF?

o Opens generator 1’s line contactor, in affect isolating it from the remainder of the aircraft’s electrical system.

o Generator 1 is limited to only powering one fuel pump in each wing tank.

ELEC_013

Describe the two methods of activating the emergency generator?

1. Automatically:

▪ Loss of power to ____ ____ ___ and __ in flight will automatically deploy the Ram Air Turbine (RAT) and activate the ______ generator.

ELEC_013

Describe the two methods of activating the emergency generator?

Automatically:

▪ Loss of power to AC Bus 1 and 2 in flight will automatically deploy the Ram Air Turbine (RAT) and activate the emergency generator.

ELEC_013

Describe the two methods of activating the emergency generator.

Manually:

▪ Selecting the red guarded ___ ___ pb on the EMER ELEC PWR panel will _____ deploy the Ram Air Turbine (RAT) and _____ the emergency generator.

NOTE: Selecting the RAT MAN ON pb on the ____ panel will deploy the RAT but will ___ activate the emergency generator.

ELEC_013

Describe the two methods of activating the emergency generator.

Manually:

▪ Selecting the red guarded MAN ON pb on the EMER ELEC PWR panel will manually deploy the Ram Air Turbine (RAT) and activate the emergency generator.

NOTE: Selecting the RAT MAN ON pb on the HYD panel will deploy the RAT but will not activate the emergency generator.

ELEC_014

Explain the configuration called “Emergency Generation After Loss of All Main Generators”.

It means that:

AC Buses ___ and ___ are unpowered and the ______ generator is powering:

AC _____ Bus
DC_____ Bus, through the ____ ____
AC and DC _____ _____ buses through their _____ Buses

NOTE: The ECAM message for this configuration appears as: _____ _____ ______ “_______ _____ _________”. in RED

ELEC_014

Explain the configuration called “Emergency Generation After Loss of All Main Generators”.

It means that AC Buses 1 and 2 are unpowered and the Emergency generator is powering:

AC ESS Bus
DC ESS Bus, through the ESS TR
AC and DC ESS SHED buses through their ESS Buses

NOTE: The ECAM message for this configuration appears as: ELEC EMER CONFIG “Emergency Electrical Configuration”.

ELEC\_015 What occurs to the emergency generator when the landing gear is lowered? The emergency generator is ______ \_\_\_\_\_\_\_, and the aircraft ________ become the _____ source of electrical power. NOTE: A red ______ light illuminates on the ____ \_\_\_\_\_ _____ panel when AC Buses \_\_\_&\_\_\_\_ are unpowered and the _____ is _____ but the _________ generator is not supplying power

ELEC\_015 What occurs to the emergency generator when the landing gear is lowered? The emergency generator is **automatically deactivated,** and the aircraft **batteries** become the **sole** source of electrical power NOTE: A red **FAULT** light illuminates on the **EMER ELEC PWR** panel when AC Buses **1 and 2** are unpowered and the **RAT** is **deployed** but the **emergency** generator is not supplying power

ELEC\_017 Recall the location and use of the MAINT BUS switch: ▪ Located on the _______ panel on the ceiling of the ________ galley. ▪ When selected ON, allows ______ power for ground servicing without energizing the entire aircraft’s electrical system. ▪ Only requires\_\_\_\_\_\_\_ power to be connected and have good Volts and Freqs.

ELEC\_017 Recall the location and use of the MAINT BUS switch: ▪ Located on the **electrical** panel on the ceiling of the **forward** galley. ▪ When selected ON, allows **external** power for ground servicing without energizing the entire aircraft’s electrical system. ▪ Only requires **external** power to be connected and have good Volts and Freqs.

ELEC\_018 Recall what would be powering the aircraft in this scenario: - both engines are **shut down** - the APU START pb indicates **AVAIL** - the EXT PWR pb indicates **ON** The aircraft is being powered by **\_\_\_\_\_ \_\_\_\_\_\_** because it has priority over the **\_\_\_\_** **\_\_\_\_\_\_\_**. ▪ The AVAIL light indicates that the APU is “**\_\_\_ \_\_\_\_\_**” ▪ The ON light in the EXT PWR pb indicates that external power has been **\_\_\_\_\_\_\_\_\_**

ELEC\_018 Recall what would be powering the aircraft in this scenario: - both engines are **shut down** - the APU START pb indicates **AVAIL** - the EXT PWR pb indicates **ON** The aircraft is being powered by **External** Power because it has priority over the **APU** **generator**. ▪ The AVAIL light indicates that the APU is “**On Speed**” ▪ The ON light in the EXT PWR pb indicates that external power has been **selected**

LMS ELEC18 The emergency generator is powered by:

LMS ELEC18 The emergency generator is powered by: The EMER GEN is driven by a blue system powered motor. The blue system is pressurized by the RAT. The shed busses do not shed when the EMER GEN is powering the system. It comes on-line when power is lost to AC Bus 1 & 2 in flight. (T7/S1)

ELEC\_019 Recall what would be powering the aircraft in this scenario: - both engines are shut down - the APU START pb indicates AVAIL (green) - the EXT PWR pb indicates AVAIL (green The aircraft is being electrically powered by the _____ generator. ▪ The AVAIL light in the APU START pb indicates that the APU is\_\_\_\_\_\_\_\_. ▪ The AVAIL light in the EXT PWR pb only indicates that external power has been _______ to the aircraft and it meets\_\_\_\_\_\_\_\_ ______ (good _____ &\_\_\_\_\_\_\_) Therefore, since external power has not been selected _____ and the APU is running, the ______ generator is powering the aircraft. (The APU generator’s pb is normally left in the\_\_\_\_ (light \_\_\_\_) position. NOTE: External power must always be ______ selected ON, using the ___ \_\_\_\_ pb, in order for it to be able to be _____ to the electrical system.

ELEC\_019 Recall what would be powering the aircraft in this scenario: - both engines are shut down - the APU START pb indicates AVAIL (green) - the EXT PWR pb indicates AVAIL (green The aircraft is being electrically powered by the **APU** generator. ▪ The AVAIL light in the APU START pb indicates that the APU is **running.** ▪ The AVAIL light in the EXT PWR pb only indicates that external power has been **connected** to the aircraft and it meets **power requirements (good Volts and Freqs).** Therefore, since external power has not been selected **ON** and the APU is running, the **APU** generator is powering the aircraft. (The APU generator’s pb is normally left in the **ON** (light **out**) position. NOTE: External power must always be **manually** selected ON, using the **EXT PWR** pb, in order for it to be able to be **applied** to the electrical system.

EXTRA What 2 conditions will the white "Galley Shed" appear on the ELEC page? 1. If the _______ pb on the overhead _____ panel is selected OFF; 2. If only ____ \_\_\_\_\_ generator is powering the aircraft

EXTRA What 2 conditions will the white "Galley Shed" appear on the ELEC page? 1. If the **GALLEY** pb on the overhead **ELEC** panel is selected OFF; 2. If only **one engine** generator is powering the aircraft

EXTRA Recall how the AC & DC ESS SHED Buses are displayed on the ELEC page.

EXTRA Recall how the AC & DC ESS SHED Buses are displayed on the ELEC page. 1. The SHED Buses only appear on the ELEC page if they are either unpowered or have failed. 2. If a SHED Bus is unpowered or has failed, the word "SHED" appears in amber underneath the respective AC or DC ESS Bus indication.

EXTRA How much power will the "Flight On Battery Only" procedure provide?

EXTRA How much power will the "Flight On Battery Only" procedure provide? approximately 30 minutes

EXTRA Describe how the emergency generator is powered (3 steps)

EXTRA Describe how the emergency generator is powered (3 steps) (1) It is powered by a hydraulic motor, (2) which is powered by the blue hydraulic system, (3) which is pressurized by the Ram Air Turbine

EXTRA On the ground with external power connected or the APU generator powering the aircraft will either or both or neither galley busses be powered? Will a GALLEY SHED indication be present?

EXTRA On the ground with external power connected or the APU generator powering the aircraft will either or both or neither galley busses be powered? Will a GALLEY SHED indication be present? BOTH galley bussed will be powered. There will be no galley shed indication

EXTRA On the ELEC page will the "APU GEN" wording and box stay or disappear when APU is off?

EXTRA On the ELEC page will the "APU GEN" wording and box stay or disappear when APU is off? Wording remains, but box disappears!

LMS ELEC01 What component controls the line contactors between the batteries and the DC BAT bus for Battery charging?

LMS ELEC01 What component controls the line contactors between the batteries and the DC BAT bus for Battery charging? Battery Charge Limiters (BCLs)

LMS ELEC03 You have pushed off the gate and the APU is running. After starting the Number 1 engine, how are the AC busses powered?

LMS ELEC03 You have pushed off the gate and the APU is running. After starting the Number 1 engine, how are the AC busses powered? GEN 1 is powering AC Bus 1 and the AC ESS Bus, while the APU is powering AC Bus 2

LMS ELEC06 What is the difference between an automatic and manual GALLEY SHED?

LMS ELEC06 What is the difference between an automatic and manual GALLEY SHED? During auto shed, main galley power (ovens) is shed, but secondary galley power (coffee) is still available

LMS ELEC14 With the GALLEY pb in its normal, lights out, position the main power supply to the high load ovens will shed if:

LMS ELEC14 With the GALLEY pb in its normal, lights out, position the main power supply to the high load ovens will shed if: A single generator is powering the system in flight or A single *_engine_* driven generator only is powering on the ground

LMS ELEC15 Under normal operating conditions DC power is supplied by:

LMS ELEC15 Under normal operating conditions DC power is supplied by: TR 1 and TR 2

LMS ELEC17 On the A319, the emergency generator: On the A319, the emergency generator provides power during approach and landing until the aircraft slows below _____ kts.

LMS ELEC17 On the A319, the emergency generator: On the A319, the emergency generator provides power during approach and landing until the aircraft slows below 100 kts. On the A320, the emergency generator stops providing power when the landing gear is lowered. In both aircraft, the emergency generator will be energized automatically with the loss of power to both AC Bus 1 and AC Bus 2.(T7/S1)

EXTRA 101 SYS REV 5 5. In the Emergency Electrical Conguration