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efa - a330p2f > ATA 24: Electrical > Flashcards

ATA 24: Electrical Flashcards

1
Q

The Main AC generators are ______ ______ each with a nominal output of ______ kVA.

A

Two Main AC generators are engine driven each with a nominal power ouput of 115 kVA.

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2
Q

The Auxiliary Power Unit (APU) AC generator
has a nominal power output of ______ kVA.

A

The APU AC generator has a nominal power output of 115 kVA.

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3
Q

The Emergency Generator is a ______ ______ ______ ______ (CSM/G) with a nominal power output of ______ kVA.

It is driven by the ______ system.

A

The Emergency Generator is a Constant Speed Motor/Generator (CSM/G) with a nominal power output 8.6 kVA.

Hydraulically driven by the GREEN system

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4
Q

The Static Inverter is fed by ______ ______ and operates on the ______ when the ______ is inoperative.

A

The Static Inverter is fed by two batteries and operates on the ground when the CSM/G is inoperative.

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5
Q

Describe the Ground Connectors - number and power output.

A

Two ground connectors
with an ouput of 90 kVA each

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6
Q

There are ______ main TRU’s (200A), ______ essential TRU (100A) and ______ TRU (100A) dedicated to the ______ ______ or ______ ______ ______.

A

There are two main TRU’s (200 A), one essential TRU (100 A), and one TRU (100 A) dedicated to the APU start or APU battery charging.

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7
Q

There are ______ batteries, each with a nominal capacity of 28v.

______ are used in ______ ______ during ______ deployment or when the ______ is not operating.

______ is dedicated to the ______ start.

A

There are three batteries, each with a nominal capacity of 28v.

Two are used in emergency configuration during RAT deployment or when the CSM/G is not operating

One is dedicated to the APU start.

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8
Q

Describe the AC Distribution Network

  • Normal configuration: each ____ ____ ____ supplies its _____ AC BUS.
  • AC ESS BUS is normally supplied from ____ ____ __
A
  • Normal configuration: each engine-driven generator supplies its associated AC BUS.
  • AC ESS BUS is normally supplied from AC BUS 1.
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9
Q

Describe the DC Distribution Network - Normal Configuration

A

-The normal DC system is split into two networks: DC BUS 1 in parallel with DC BAT BUS and DC BUS 2.
- Each DC network is supplied by its own Transformer Rectifier (TR).

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10
Q

Describe the DC ESS BUS

The DC ESS BUS is fed by the ___ ___ systematically for better segregation between DC 1 and DC 2.

A

The DC ESS BUS is fed by the ESS TR systematically for better segregation between DC 1 and DC 2.

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11
Q

What is the relationship between the batteries and HOT BUS Bar?

A

Two batteries are permanently connected to the two hot busses.

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12
Q

What is the third battery used for?

A

The third battery is dedicated to APU starting.

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13
Q

What is the Battery Charge Limiter (BCL) used for?

A

The Battery Charge Limiter (BCL) connect two batteries to the DC BAT BUS.

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14
Q

Describe what happens when a generator fails

A

If one generator fails, another will automatically take over.
If APU is operative, APU generator will take over.
If APU generator is not available, the other engine generator will take over.

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15
Q

What happens with a total loss of all main generators (engines still running)?

A

The emergency generator delivers 8.6 kVA of power and the GREEN hydraulic system is still powered by engine-driven pumps.

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16
Q

What happens in the case of total generator failure due to all-engines loss?

A
  • The emergency generator delivers 3.5 kVA via the GREEN hydraulic system.
  • It is powered by the RAT (otherwise the engine pump(s) if at least one engine is running).
  • Batteries take over when slats are extended.
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17
Q

What happens with a single TR failure?

A

If one TR fails, the other will automatically take over its corresponding DC network via DC BAT BUS.

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18
Q

What happens with a double TR failure? (Two possible scenarios)

A
  1. TR 1 and 2: DC BUS 1 and DC BUS 2 are lost.
  2. TR 1 (or 2) and ESS TR: The remaining TR supplies DC BUS 1 + 2 and DC BAT BUS; the DC ESS BUS is lost.
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19
Q

How are the circuit breakers monitored?

A

By the CBMU (Circuit Breaker Monitoring Units) and a C/B page on the ECAM.

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20
Q

If external power is available and is within the power criteria for aircraft use:
(a) It will automatically close the bus tie contactor’s when connected by the ground crew
(b) The GREEN avail light will illuminate on the EXT PWR pb
(c) The bus tie Pb illuminates

A

(b) The GREEN avail light will illuminate on the EXT PWR pb

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21
Q

If during a normal flight, the BUS TIE Pb was depressed to off, what effect would this have on power to the busses?

(a) None
(b) All power would be lost and the batteries would power the aircraft until the RAT was up to speed
(c) AC ESS Bus will be lost and ALTN light on AC ESS FEED switch will illuminate

A

(a) None

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22
Q

If both engine generators are powering the system, and one subsequently fails, are any
busses unpowered?

(a) No, but some loads are shed in the galleys
(b) Only the AC ess. Shed bus
(c) Yes, those associated with the failed generator

A

(a) No, but some loads are shed in the galleys

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23
Q

What would cause the galley fault light to illuminate?

(a) When the flight attendants have all the coffee makers and ovens on at once
(b) When the main galley has shed
(c) When an overload is detected and auto shedding is not performed

A

(c) When an overload is detected and auto shedding is not performed

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24
Q

What is the function of APU GEN pb located on the overhead electrical panel?

(a) When on it connects APU generator to the electrical system when engines are running
(b) When selected to off the APU generator field is de-energised and if connected to the electrical system, disconnects
(c) Both A and B are correct

A

(b) When selected to off the APU generator field is de-energised and if connected to the electrical system, disconnects

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25
Q

If the normal source of power for the ESS AC Bus is lost, does another source of power automatically power the bus?

(a) Yes, only if NORMAL was selected on the AC ESS FEED Pb
(b) Yes, only if ALTN was selected on the AC ESS FEED Pb
(c) No, this is an action that must be accomplished by the crew

A

(a) Yes, only if NORMAL was selected on the AC ESS FEED Pb

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26
Q

Whilst the RAT is deployed in an emergency, the static inverter supplies the:

(a) AC ESS BUS and AC Ess Grnd
(b) AC ESS BUS and AC Ess Shed Bus
(c) AC ESS BUS only

A

(c) AC ESS BUS only

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27
Q

Electrical Contractor Management Unit (ECMU) function is:

a. control of AC and DC bus ties

b. TR contractors monitoring

c. automatic management and monitoring

A

c. automatic management and monitoring

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28
Q

Loss of one generator or TR:

a. results in the loss of the corresponding AC or DC bus

b. has no effect on flight management

c. requires to have the APU generator operational

A

b. has no effect on flight management

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29
Q

The minimum number of generators required to supply all the network (in a non-overload condition) is

a. one engine generator

b. one engine generator and the EMER generator

c. two generators

A

a. one engine generator

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30
Q

The emergency generator is powered by:

a. a Ram Air Turbine

b. the Static Inverter

c. the green hydraulic system when pressurized by engine 1 or 2 driven hydraulic pump or by Ram Air Turbine

A

c. the green hydraulic system when pressurized by engine 1 or 2 driven hydraulic pump or by Ram Air Turbine

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31
Q

An engine generator is driven:

a. at a ratio of 5:1 to engine speed

b. direct from the accessory gear box

c. by an Integrated Drive Generator (IDG)

A

c. by an Integrated Drive Generator (IDG)

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32
Q

Each engine generator supplies power to:

a. its assigned AC BUS in normal operation

b. the opposite side AC BUS in normal operation

c. only its assigned BUS in all cases

A

a. its assigned AC BUS in normal operation

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33
Q

The APU battery:

a. is dedicated to APU start only

b. may be used for Engine Start when the APU is not available

c. can be used as a backup for Battery One or Battery Two

A

a. is dedicated to APU start only

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34
Q

Normally which AC BUS supplies the ESS TR?

a. AC BUS 1

b. AC BUS 2

c. AC ESS BUS

A

a. AC BUS 1

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35
Q

When the Battery selector is in the #2 position, which of the following is true?

a. BAT 2 has been selected to start the APU

b. BAT 2 voltage can now be read in the voltage indicator window

c. APU BAT voltage can now be read in the voltage indicator window

A

b. BAT 2 voltage can now be read in the voltage indicator window

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36
Q

In flight, APU not running, an engine generator has failed, which source is supplying the the corresponding AC BUS?

a. the Static Inverter

b. the AC BUS is lost

c. the other side engine generator

A

c. the other side engine generator

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37
Q

Two Electrical Contactor Management Unit (ECMU) provide:

a. control of TR contactors

b. AC and DC contactors control and monitoring except for TR contractors

c. AC and DC contactors control and monitoring except for TRs which have their own control, gallery shedding and no break power transfer

A

c. AC and DC contactors control and monitoring except for TRs which have their own control, gallery shedding and no break power transfer

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38
Q

The ESS TR s normally supplied by which BUS?

a. AC ESS BUS

b. AC BUS 1

c. AC BUS 2

A

b. AC BUS 1

39
Q

When TR 1 is lost, due to unpowered AC BUS 1:

a. there is no degradation in the capability of the DC system

b. the APU BAT BUS is discharging at a rate of 2 amperes

c. the Static Inverter is being powered because TR 1 is not powered

A

a. there is no degradation in the capability of the DC system

40
Q
  1. When the C/B ECAM page shows NORMAL in green, it indicates:

a. there are no C/Bs tripped or pulled

b. electric supply to C/Bs is normal

c. no fault detected in the Electronic Equipment Bay

A

a. there are no C/Bs tripped or pulled

41
Q
  1. The last C/B tripped is displayed (ECAM C/B page):

a. on top of the tripped C/B list

b. on the last tripped C/B list

c. not shown

A

a. on top of the tripped C/B list

42
Q
  1. When the C/B ECAM page shows NOT AVAIL in amber, it indicates:

a. the C/B ECAM page is not selectable

b. requested C/Bs are not monitored by the CBMU

c. data from the CBMU are not monitored by the CBMU

A

c. data from the CBMU are not monitored by the CBMU

43
Q
  1. During EMER GEN automatic start up sequence:

a. the MAN ON pb must be pushed to extinguish red FAULT light on the EMER ELEC CTRL PANEL

b. it is not recommended to push the MAN ON pb to confirm EMER ELEC config on the EMER ELEC PANEL

c. the RED FAULT light on EMER ELEC PANEL will remain ON until the EMER GEN reaches its nominal output

A

c. the RED FAULT light on EMER ELEC PANEL will remain ON until the EMER GEN reaches its nominal output

44
Q
  1. The EMER GEN is being powered by a hydraulic system pressurized by an engine driven hydraulic pump. Pressing the LAND RECOVERY push button switch will:

a. operate when the gear is extended

b. normally recover the AC and DC LAND RECOVERY BUSES and the DC SHED LAND RECOVERY BUS. This will power some components for approach and landing

c. energize the landing gear

A

b. normally recover the AC and DC LAND RECOVERY BUSES and the DC SHED LAND RECOVERY BUS. This will power some components for approach and landing

45
Q
  1. The main function of the MAINT BUS SWITCH is:

a. to power the AC and DC systems when the aircraft is on the ground

b. to allow selected ground services equipment to be powered without powering the entire aircraft electrical system.

c. to allow EXT power to supply AC and DC essential busses and their respective shed buses

A

b. to allow selected ground services equipment to be powered without powering the entire aircraft electrical system.

46
Q
  1. When the MAINT BUS SWITCH is ON:

a. the electric network supply is limited to Ground Service items

b. the DC busses are powered only

c. it is for the purpose of operating the cargo door only

A

a. the electric network supply is limited to Ground Service items

47
Q
  1. The MAINT BUS SWITCH is located:

a. on the overhead systems panel in the cockpit

b. overhead, before entry of the cockpit door

c. on the Purser’s Control Panel in the FWD cabin

A

b. overhead, before entry of the cockpit door

48
Q

When ECAM shows ELEC ECMU 1 FAULT amber message (ECMU = Electrical Contractor Management Unit):

a. ECMU 1 controls Generator Line Contractor (GLC) 2; you should reset generator 2

b. ECMU 1 controls GLC 1 and you should not reset the corresponding generator

c. ECMU 1 controls GLC 1 and you should try to reset the corresponding generator

A

b. ECMU 1 controls GLC 1 and you should not reset the corresponding generator

49
Q
  1. A MASTER CAUTION light with a single chime and the following ECAM memo ELEC GEN 2 FAULT illuminate amber, this means that:

a. an ECMU fault

b. a TR overload

c. a generator fault

A

c. a generator fault

50
Q
  1. The FAULT light of the GALLEY pb switch will illuminate amber when:

a. galley circuits are shed

b. an overload is detected and the automatic shedding is not operating

c. the automatic shedding, manual override and overload detection are not operating

A

b. an overload is detected and the automatic shedding is not operating

51
Q

ECAM message ELEC BAT 1 FAULT is shown on the ECAM. The fault was triggered because:

a. charging current increasing at an abnormal rate

b. abnormal voltage

c. the BAT 1 pb is set to OFF

A

a. charging current increasing at an abnormal rate

52
Q

ECAM message ELEC DC BUS 2 FAULT means:

a. a faulty TR

b. the normal connection between DC BAT BUS and DC BUS 2 has been broken

c. DC BUS 2 is not powered

A

c. DC BUS 2 is not powered

53
Q

The IDG switch on the ELEC control panel is used:

a. to disconnect the generator

b. to disconnect the generator and open the GCU

c. to disconnect the IDG from the accessory gearbox

A

c. to disconnect the IDG from the accessory gear box

54
Q

ELEC_01
Understand the control functions and indications on the ELEC Panel.
1. BAT Select Switch
Selects the battery to display in the battery voltage ________ display.
V2 24.3.2

A

ELEC_01
Understand the control functions and indications on the ELEC Panel.
1. BAT Select Switch
Selects the battery to display in the battery voltage LCD display.
V2 24.3.2

55
Q

ELEC_01
Understand the control functions and indications on the ELEC Panel.
2. Battery Voltage LCD Display

  • Displays ________ of the battery selected with the ______ ______ switch.

V2 24.3.2

A

ELEC_01
Understand the control functions and indications on the ELEC Panel.
2. Battery Voltage LCD Display

  • Displays voltage of the battery selected with the BAT select switch.

V2 24.3.2

56
Q

ELEC_01
Understand the control functions and indications on the ELEC Panel.
3. BAT 1/2 pbs
Controls the operation of the respective ______ ______ ______ (________).

  • On (lights out) - The BCL controls the connection of the battery to the ________ BAT bus.
    • During ground operations, batteries are automatically ________ when battery voltage drops below [________] V.
  • OFF - The BCL is not ________ and the battery is not ________ to the __ ___ bus (except in- flight in the ______ _____ configuration).
    • OFF illuminates ________ if the ___ ____ BUS is powered (power source for the light).
  • • FAULT - Illuminates amber when the charging current for the corresponding battery is ____ __ _____.
    • The battery contactor ________ automatically.

V2 24.3.2

A

ELEC_01
Understand the control functions and indications on the ELEC Panel.
3. BAT 1/2 pbs
Controls the operation of the respective Battery Charge Limiter (BCL).

  • On (lights out) - The BCL controls the connection of the battery to the DC BAT bus.
    • During ground operations, batteries are automatically disconnected when battery voltage drops below [23] V.
  • OFF - The BCL is not operating and the battery is not connected to the DC ESS bus (except in- flight in the emergency electrical configuration).
    • OFF illuminates white if the DC BAT BUS is powered (power source for the light).
  • • FAULT - Illuminates amber when the charging current for the corresponding battery is out of limits.
    • The battery contactor opens automatically.

V2 24.3.2

57
Q

ELEC_01
Understand the control functions and indications on the ELEC Panel.
4. APU BAT pb

  • Controls the operation of the APU ________.
    • On (lights out) - The APU ________ controls the connection of the APU ________ to the _____ APU bus.
  • The battery is connected for ________ and when the APU______ ______ is initiated.

V2 24.3.2

A

ELEC_01
Understand the control functions and indications on the ELEC Panel.
4. APU BAT pb

  • Controls the operation of the APU BCL.
    • On (lights out) - The APU BCL controls the connection of the APU battery to the DC APU bus.
  • The battery is connected for charging and when the APU start sequence is initiated.

V2 24.3.2

58
Q

ELEC_01
Understand the control functions and indications on the ELEC Panel.

5. AC ESS FEED pb

  • Normal (lights out) - The AC ESS bus is normally supplied by AC _____ _____.
    • When _AC BUS______ is lost, the AC ESS bus is automatically supplied by _AC BUS ______
  • ALTN - The AC ESS bus is supplied by _AC BUS ______.
  • FAULT - Illuminates amber if the _______ _____ bus is not supplied.

• Note: In case of loss of both main generators, AC ESS bus is supplied by the _____ _____ or the _____ _____.

V2 24.3.2

A

ELEC_01
Understand the control functions and indications on the ELEC Panel.

5. AC ESS FEED pb

  • Normal (lights out) - The AC ESS bus is normally supplied by AC BUS 1.
    • It is automatically supplied by AC BUS 2 when AC BUS 1 is lost.
  • ALTN - The AC ESS bus is supplied by AC BUS 2.
  • FAULT - Illuminates amber if the AC ESS bus is not supplied.

• Note: In case of loss of both main generators, AC ESS bus is supplied by the emergency generator or the static inverter.

V2 24.3.2

59
Q

ELEC_01
Understand the control functions and indications on the ELEC Panel.

6. GALLEY pb

  • AUTO - The galley busses are ________ powered.
    • One or more galleys are shed if a ________ fails or an ________ is detected.
  • OFF - All ________ are shed and the ______/______ drain mast protection is lost.
    • OFF then ________ will reset ________ lost due to overload protection.
  • FAULT - Illuminates amber if an ________ is detected and ________ did not occur.

V2 24.3.2

A

ELEC_01
Understand the control functions and indications on the ELEC Panel.

6. GALLEY pb

  • AUTO - The galley busses are normally powered.
    • One or more galleys are shed if a generator fails or an overload is detected.
  • OFF - All galleys are shed and the water/waste drain mast protection is lost.
    • OFF then AUTO will reset galleys lost due to overload protection.
  • FAULT - Illuminates amber if an overload is detected and shedding did not occur.

V2 24.3.2

60
Q

ELEC_01
Understand the control functions and indications on the ELEC Panel.

7. COMMERCIAL pb
OFF - COMMERCIAL OFF is displayed on the AC ELEC page and the following equipment is shed:

  • ________
  • In-flight ________ system
  • ________outlets
  • ________/______drain mast ice protection
  • ______ and ______ lights
  • Water ________
  • Escape slide ______ ___ protection
  • ______ ______ system

V2 24.3.2

A

ELEC_01
Understand the control functions and indications on the ELEC Panel.

7. COMMERCIAL pb
OFF - COMMERCIAL OFF is displayed on the AC ELEC page and the following equipment is shed:

  • Galleys
  • In-flight entertainment system
  • Electrical outlets
  • Water/waste drain mast ice protection
  • Cabin and lavatory lights
  • Water heaters
  • Escape slide lock ice protection
  • Cargo loading system

V2 24.3.2

61
Q

ELEC_01
Understand the control functions and indications on the ELEC Panel.

8. IDG 1/2 pb

  • OFF - Disconnects the ______ from its drive shaft. It can only be reconnected by ________ personnel on the ground.
  • FAULT - Illuminates amber for:
    • IDG oil outlet ________ too high
    • IDG oil ________ too low
    • The fault light extinguishes when the ________ is disconnected

Note: Press the IDG pb until the ______ ______ light comes on but not for more than ________ seconds.
V2 24.3.2

A

ELEC_01
Understand the control functions and indications on the ELEC Panel.

8. IDG 1/2 pb

  • OFF - Disconnects the IDG from its drive shaft. It can only be reconnected by maintenance personnel on the ground.
  • FAULT - Illuminates amber for:
    • IDG oil outlet temperature too high
    • IDG oil pressure too low
    • The fault light extinguishes when the IDG is disconnected

Note: Press the IDG pb until the GEN FAULT light comes on but not for more than 3 seconds.
V2 24.3.2

62
Q

ELEC_01
Understand the control functions and indications on the ELEC Panel.

9. GEN 1/2 pb

  • On (lights out) - The engine driven generators ________ come on line whenever their ________ parameters are within limits.
  • FAULT - The pb is ________ and the generator is ______ being driven (e.g., the ________ preflight position).
  • OFF/R - The generator field is ________, the line contactor is ________, and the ________ circuit is reset.

V2 24.3.2

A

ELEC_01
Understand the control functions and indications on the ELEC Panel.

9. GEN 1/2 pb

  • On (lights out) - The engine driven generators automatically come on line whenever their electrical parameters are within limits.
  • FAULT - The pb is on and the generator is not being driven (e.g., the normal preflight position).
  • OFF/R - The generator field is de-energized, the line contactor is opened, and the fault circuit is reset.

V2 24.3.2

63
Q

ELEC_01
Understand the control functions and indications on the ELEC Panel.

10. APU GEN pb

  • On (lights out) - The APU generator automatically comes __ ____ whenever the electrical parameters are within ________ and a ______ ______ power source is not already __ ____.
  • FAULT - The pb is _____ and the generator is not being ________.
  • OFF/R - The generator field is ______, the line contactor is ________, and the ________ circuit is reset.

V2 24.3.2

A

ELEC_01
Understand the control functions and indications on the ELEC Panel.

10. APU GEN pb

  • On (lights out) - The APU generator automatically comes on line whenever the electrical parameters are within limits and a higher priority power source is not already on line.
  • FAULT - The pb is ON and the generator is not being driven.
  • OFF/R - The generator field is de-energized, the line contactor is opened, and the fault circuit is reset.

V2 24.3.2

64
Q

ELEC_01
Understand the control functions and indications on the ELEC Panel.

11. BUS TIE pb

  • AUTO - The _____ _____ ___ bus contactors ______ or _____ automatically according to the ________ logic, in order to maintain power to all ________ busses.
  • OFF - The ______ ______ ____ bus contactors are opened

V2 24.3.2

A

ELEC_01
Understand the control functions and indications on the ELEC Panel.

11. BUS TIE pb

  • AUTO - The three cross tie bus contactors open or close automatically according to the priority logic, in order to maintain power to all AC busses.
  • OFF - The three cross tie bus contactors are opened

V2 24.3.2

65
Q

ELEC_01
Understand the control functions and indications on the ELEC Panel.

12. EXT B pb

  • AVAIL - External power is ________ and within ________ tolerances, but ___ ______.
    • When pressed, AVAIL extinguishes and ________ illuminates.
  • AUTO - Closes the ______ ___ contactor if the APU is not available.
    • The AUTO light illuminates even if EXT B is not powering any _____ busses
      • (i.e. the ______ is supplying power to the AC system.)

V2 24.3.2

A

ELEC_01
Understand the control functions and indications on the ELEC Panel.

12. EXT B pb

  • AVAIL - External power is available and within normal tolerances, but not selected.
    • When pressed, AVAIL extinguishes and AUTO illuminates.
  • AUTO - Closes the external B contactor if the APU is not available.
    • The AUTO light illuminates even if EXT B is not powering any AC busses
      • (i.e. the APU is supplying power to the AC system.)

V2 24.3.2

66
Q

ELEC_01
Understand the control functions and indications on the ELEC Panel.

13. EXT A pb

  • AVAIL - External power is ________ and within normal tolerances, but ____ ______.
    • When pressed, AVAIL extinguishes and _____ illuminates.
  • ON - Closes the ______ ___ contactor.

V2 24.3.2

A

ELEC_01
Understand the control functions and indications on the ELEC Panel.

13. EXT A pb

  • AVAIL - External power is available and within normal tolerances, but not selected.
    • When pressed, AVAIL extinguishes and ON illuminates.
  • ON - Closes the external A contactor.

V2 24.3.2

67
Q

ELEC_02
Understand the control functions and indications on the EMER ELEC PWR Panel.

1. EMER GEN TEST pb

  • Pressed and held - The emergency generator runs (provided the ________ hydraulic system is pressurized), and supplies the __ ______ bus and __ ______ bus.

V2 24.3.1

A

ELEC_02
Understand the control functions and indications on the EMER ELEC PWR Panel.

1. EMER GEN TEST pb

  • Pressed and held - The emergency generator runs (provided the GREEN hydraulic system is pressurized), and supplies the DC ESS bus and AC ESS bus. “…supplies AC and DC ESS bus”

V2 24.3.1

68
Q

ELEC_02
Understand the control functions and indications on the EMER ELEC PWR Panel.

2. LAND RECOVERY pb

  • ON - When pressed in the ________ electrical configuration the ___ and ___ LAND RECOVERY busses are ________ while ________ other non-essential equipment

V2 24.3.1

A

ELEC_02
Understand the control functions and indications on the EMER ELEC PWR Panel.

2. LAND RECOVERY pb

  • ON - When pressed in the emergency electrical configuration the AC and DC LAND RECOVERY busses are recovered while shedding other non-essential equipment

V2 24.3.1

69
Q

ELEC_02
Understand the control functions and indications on the EMER ELEC PWR Panel.

3. EMER GEN FAULT Light

  • FAULT - Illuminated if ________ AC power is lost in flight and the ______ ______ is not supplying power.

V2 24.3.1

A

ELEC_02
Understand the control functions and indications on the EMER ELEC PWR Panel.

3. EMER GEN FAULT Light

  • FAULT - Illuminated if normal AC power is lost in flight and the emergency generator is not supplying power.

V2 24.3.1

70
Q

ELEC_02
Understand the control functions and indications on the EMER ELEC PWR Panel.

4. MAN ON pb

  • AUTO - The emergency generator is automatically started in case of loss of ______ __ power __ ______.
  • Pushed - The emergency generator runs and supplies the __ and __ ______ busses.

V2 24.3.1

A

ELEC_02
Understand the control functions and indications on the EMER ELEC PWR Panel.

4. MAN ON pb

  • AUTO - The emergency generator is automatically started in case of loss of normal AC power in flight.
  • Pushed - The emergency generator runs and supplies the AC and DC essential busses.

V2 24.3.1

71
Q

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

1. TR Indication Arrow
Normally ________. Becomes amber if the _____ fails or current is ________.

2. AC Bus Bars
The bus label is ________ when the bus is powered, and ________ when the bus is not powered.

V2 24.3.3.1

A

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

1. TR Indication Arrow
Normally white. Becomes amber if the TR fails or current is abnormal.

2. AC Bus Bars
The bus label is green when the bus is powered, and amber when the bus is not powered.

V2 24.3.3.1

72
Q

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

3. Engine Generator Indications

  • GEN - Normally ________. Becomes amber if the generator ________, is selected _______,_ or the associated engine is ______ ______.
  • GEN Number (1/2) - ________ if the associated engine is running, ________ if it is not.
  • Load (%) - Normally ________.
    • Becomes amber if the load is greater than ________value for more than ____ seconds.
  • GEN Voltage (V) - Normally ________
    • Becomes amber if ______ or ______ a predetermined value.
  • Frequency (HZ) - Normally ________.
    • Becomes amber if ______ or ______ a predetermined value.

V2 24.3.3.1

A

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

3. Engine Generator Indications

  • GEN - Normally white. Becomes amber if the generator fails, is selected OFF, or the associated engine is not running.
  • GEN Number (1/2) - White if the associated engine is running, amber if it is not.
  • Load (%) - Normally green.
    • Becomes amber if the load is greater than predetermined value for more than 10 seconds.
  • GEN Voltage (V) - Normally green.
    • Becomes amber if above or below a predetermined value.
  • Frequency (HZ) - Normally green.
    • Becomes amber if above or below a predetermined value.

V2 24.3.3.1

73
Q

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

4. IDG Indications
• IDG - Normally ________. Becomes amber if:

  • Oil outlet ________ is high.
  • Oil ________ is low.
  • IDG is ________.
  • IDG Number (1/2) - ________ if the associated engine is running, amber if it is not.
    • Numbers also white if the respective ________ is not powered.
  • Oil Outlet Temperature - Normally ________.
    • Becomes amber if the temperature is too _______._
  • LO PR (amber) - ________ oil pressure in the IDG.
    • Inhibited with ________less than a predetermined value.
  • DISC (amber) - IDG has been _______._

V2 24.3.3.1

A

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

4. IDG Indications
• IDG - Normally white. Becomes amber if:

  • Oil outlet temperature is high.
  • Oil pressure is low.
  • IDG is disconnected.
  • IDG Number (1/2) - White if the associated engine is running, amber if it is not.
    • Numbers also white if the respective FADEC is not powered.
  • Oil Outlet Temperature - Normally green.
    • Becomes amber if the temperature is too high.
  • LO PR (amber) - Low oil pressure in the IDG.
    • Inhibited with N2 less than a predetermined value.
  • DISC (amber) - IDG has been disconnected.

V2 24.3.3.1

74
Q

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

5. Shedding Indications
Indicates the current shed equipment in the following priority order:

  • ________ OFF
  • ________ SHED
  • ________ PARTIALLY SHED

V2 24.3.3.1

A

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

5. Shedding Indications
Indicates the current shed equipment in the following priority order:

  • COMMERCIAL OFF
  • GALLEY SHED
  • GALLEY PARTIALLY SHED

V2 24.3.3.1

75
Q

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

6. APU Generator

  • APU arrow indication – ________ when APU is supplying one or more ______ busses,
  • APU arrow indication ________ when NOT supplying one or more AC Busses
  • APU label, load, voltage, and frequency indications - Same as ______ ______ generators

V2 24.3.3.1

A

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

6. APU Generator

  • APU arrow indication – Green when APU is supplying one or more AC busses
  • APU arrow indication WHITE when NOT supplying one or more AC Busses
  • APU label, load, voltage, and frequency indications - Same as engine driven generators

V2 24.3.3.1

76
Q

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

7. External Power A/B

  • EXT B and EXT A indications are only ______ __ ___ ______.
  • EXT (A/B) arrow indications - ________ when supplying one or more AC busses, ________ otherwise.
  • EXT (A/B) load, voltage, and frequency indications - ______ __ ______ ______ generators.

V2 24.3.3.1

A

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

7. External Power A/B

  • EXT B and EXT A indications are only displayed on the ground.
  • EXT (A/B) arrow indications - Green when supplying one or more AC busses, white otherwise.
  • EXT (A/B) load, voltage, and frequency indications - Same as engine driven generators.

V2 24.3.3.1

77
Q

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

8. Emergency Generator

  • EMER GEN Label - Normally ________
    • Becomes amber if the ______ ______.
  • Arrow indication - Green when the ______ ______ contactor is closed,
  • ________ when the_______ ______ contactor is OPEN.
  • EMER GEN ______ and ______ indications - Same as engine driven generators

V2 24.3.3.1

A

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

8. Emergency Generator

  • EMER GEN Label - Normally white.
    • Becomes amber if the generator fails.
  • Arrow indication - Green when the EMER GEN contactor is closed, white when the EMERG GEN contactor is OPEN
  • EMER GEN voltage and frequency indications - Same as engine driven generators

V2 24.3.3.1

78
Q

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

9. SHED Indication

  • SHED (amber) - Indication appears when an ___ ____ ______ bus is not powered.

V2 24.3.3.1

A

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

9. SHED Indication

  • SHED (amber) - Indication appears when AC ESS SHED bus is not powered.

V2 24.3.3.1

79
Q

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

10. LND RCVRY Indication

  • LND RCVRY (green) - Indication appears when the ______ ______ pb is pushed.

11. Static Inverter
Same display logic as ______ ______.

V2 24.3.3.1

A

ELEC_03
Discuss normal and abnormal indications on the ECAM AC ELEC page.

10. LND RCVRY Indication

  • LND RCVRY (green) - Indication appears when the LAND RECOVERY pb is pushed.

11. Static Inverter
Same display logic as Emergency Generator.

V2 24.3.3.1

80
Q

ELEC_04
Discuss normal and abnormal indications on the ECAM DC ELEC page.

1. Batteries

  • BAT (1/2/APU) label - Normally ________.
    • Becomes amber if the battery is ________.
  • Voltage (V) - Normally ________.
    • Becomes amber if voltage is _____ or ______ a predetermined value.
  • Current (A) - Indicates ______ or ______ of battery in amps. Normally ________.
    • Becomes amber with a ________ of more than a predetermined value.
  • Arrow indications - Indicates ________ of current flow.
    • Charging flow is displayed in ________
    • Discharging flow is displayed in ________.
    • No ________ indicates battery ________ open (the usual __- ______ configuration).

V2 24.3.4.1

A

ELEC_04
Discuss normal and abnormal indications on the ECAM DC ELEC page.

1. Batteries

  • BAT (1/2/APU) label - Normally white.
    • Becomes amber if the battery is faulted.
  • Voltage (V) - Normally green.
    • Becomes amber if voltage is above or below a predetermined value.
  • Current (A) - Indicates charge or discharge of battery in amps. Normally green.
    • Becomes amber with a discharge of more than a predetermined value.
  • Arrow indications - Indicates direction of current flow.
    • Charging flow is displayed in green.
    • Discharging flow is displayed in amber.
    • No arrow indicates battery contactor open (the usual in- flight configuration).

V2 24.3.4.1

81
Q

ELEC_04
Discuss normal and abnormal indications on the ECAM DC ELEC page.

2. DC Bus Bars

  • The bus label is ________ when the bus is powered and ________ when the bus is not powered.

V2 24.3.4.1

A

ELEC_04
Discuss normal and abnormal indications on the ECAM DC ELEC page.

2. DC Bus Bars

  • The bus label is green when the bus is powered and amber when the bus is not powered.

V2 24.3.4.1

82
Q

ELEC_04
Discuss normal and abnormal indications on the ECAM DC ELEC page.

3. TR

  • TR (1/2/APU/ ESS) - Normally ________.
    • Becomes amber when the ________ value is ________or a _____ fault occurs (______, ______, ______ ______).
  • Voltage - Displays the ____ voltage delivered by the ____. Normally ________.
    • Becomes amber if voltage is ______ or ______ a predetermined value.
  • Current (A) - Displays the ______ ______ in amps on the respective TR by the ____ system.
    • Normally displayed in ________, becomes amber if ________ value is less a predetermined value].

A rectifier is a device that converts an oscillating two-directional alternating current (AC) into a single-directional direct current (DC).

V2 24.3.4.1

A

ELEC_04
Discuss normal and abnormal indications on the ECAM DC ELEC page.

3. TR

  • TR (1/2/APU/ ESS) - Normally white.
    • Becomes amber when the current value is abnormal or a TR fault occurs (overheat, current, short circuit).
  • Voltage - Displays the DC voltage delivered by the TR. Normally green.
    • Becomes amber if voltage is above or below a predetermined value.
  • Current (A) - Displays the current draw in amps on the respective TR by the DC system.
    • Normally displayed in green, becomes amber if amps value is less a predetermined value].

A rectifier is a device that converts an oscillating two-directional alternating current (AC) into a single-directional direct current (DC).

V2 24.3.4.1

83
Q

ELEC_04
Discuss normal and abnormal indications on the ECAM DC ELEC page.

4. TR Power Supply

  • For each TR the ____ ____ powering the TR is displayed.
    • Normally displayed in ________.
      • Becomes amber if the source ___ __ is not powered.
  • ESS TR indications - The essential TR may be supplied by __ __, __ __, or the ________ generator
    • AC1 - AC 1 bus is supplying the ____ ____
    • AC 2 - AC 2 bus is supplying the ____ ____
    • EMER GEN - The emergency generator is supplying the ____ ____.
      • Becomes amber if the emergency generator is connected to the TR but is ________.
    • XX (amber) - ____ ____ not powered or ________ not available.

V2 24.3.4.1

A

ELEC_04
Discuss normal and abnormal indications on the ECAM DC ELEC page.

4. TR Power Supply

  • For each TR the AC bus powering the TR is displayed.
    • Normally displayed in white.
      • Becomes amber if the source AC bus is not powered.
  • ESS TR indications - The essential TR may be supplied by AC 1, AC 2, or the emergency generator
    • AC1 - AC 1 bus is supplying the ESS TR
    • AC 2 - AC 2 bus is supplying the ESS TR
    • EMER GEN - The emergency generator is supplying the ESS TR.
      • Becomes amber if the emergency generator is connected to the TR but is faulty.
    • XX (amber) - ESS TR not powered or information not available.

V2 24.3.4.1

84
Q

ELEC_04
Discuss normal and abnormal indications on the ECAM DC ELEC page.

5. DC BAT Bus / Battery Connection

  • Arrow indications - Indicates ________ of current flow.
  • Charging flow is displayed in ________.
  • Discharging flow is displayed in ________.
  • No arrow indicates battery ________ open (the usual in-flight configuration).

V2 24.3.4.1

A

ELEC_04
Discuss normal and abnormal indications on the ECAM DC ELEC page.

5. DC BAT Bus / Battery Connection

  • Arrow indications - Indicates direction of current flow.
  • Charging flow is displayed in green.
  • Discharging flow is displayed in amber.
  • No arrow indicates battery contactor open (the usual in-flight configuration).

V2 24.3.4.1

85
Q

ELEC_04
Discuss normal and abnormal indications on the ECAM DC ELEC page.

6. DC ESS Bus / Battery Connection

  • Amber arrow appears when battery contactor is _________ (battery is supplying ____ ____ bus).

V2 24.3.4.1

A

ELEC_04
Discuss normal and abnormal indications on the ECAM DC ELEC page.

6. DC ESS Bus / Battery Connection

  • Amber arrow appears when battery contactor is closed (battery is supplying DC ESS bus).

V2 24.3.4.1

86
Q

Discuss normal and abnormal indications on the ECAM DC ELEC page.

Static Inverter

  • STAT INV label - Normally ______. Becomes ________ when faulty.
A

Discuss normal and abnormal indications on the ECAM DC ELEC page.

Static Inverter

  • STAT INV label - Normally white. Becomes amber when faulty.
87
Q

Discuss the meaning of the ECAM memos as they relate to electrical system.

EMER GEN

  • Displayed in _____ when the emergency generator is running.

ELEC EXT PWR

  • Displayed in ______ if external power is available.
  • Becomes _____ if _____ _____ are running.
A

Discuss the meaning of the ECAM memos as they relate to electrical system.

EMER GEN

  • Displayed in GREEN when the emergency generator is running.

ELEC EXT PWR

  • Displayed in GREEN if external power is available. Becomes amber if both engines are running.
88
Q

Discuss the Emergency Generator operation during the loss normal AC power.

  • If both the AC 1 and AC 2 busses are lost, the ______ ______ automatically activates.
    • The ______ generator is driven by the ______ hydraulic system.
A

Discuss the Emergency Generator operation during the loss normal AC power.

  • If both the AC 1 and AC 2 busses are lost, the emergency generator automatically activates.
    • The emergency generator is driven by the GREEN hydraulic system.
89
Q

Discuss the Emergency Generator operation during the loss normal AC power.

  • If both engines have also failed, the ________ extends automatically and powers the ________ hydraulic system.
  • The emergency generator supplies the ____ ____ bus and the ____ ____.
  • The ____ ____ supplies the DC ESS bus.
  • If the green hydraulic system is powered by the RAT the ____ ____ SHED and ____ ____ SHED busses are not powered due to limited ________ capacity.
  • This is displayed on the ELEC AC and DC system pages by the amber ________ indications.
A

Discuss the Emergency Generator operation during the loss normal AC power.

  • If both engines have also failed, the RAT extends automatically and powers the GREEN hydraulic system.
  • The emergency generator supplies the AC ESS bus and the ESS TR.
  • The ESS TR supplies the DC ESS bus.
  • If the green hydraulic system is powered by the RAT the AC ESS SHED and DC ESS SHED busses are not powered due to limited RAT capacity.
  • This is displayed on the ELEC AC and DC system pages by the amber SHED indications.
90
Q

Discuss the Emergency Generator operation during the loss normal AC power.

Once the emergency generator is activated, it continues to power the:

  • ___ ___ Bus and,
  • ___ ___ Bus even if generators are ______ until either:
    • ______ are extended in flight (if only the ______ is powering the ______ hydraulic system), at which point power switches to ________ only.
    • On the ground with ______ ______ shut down.
A

Discuss the Emergency Generator operation during the loss normal AC power.

Once the emergency generator is activated, it continues to power the:

  • AC ESS
  • and DC ESS even if generators are restored until either:
    • Slats are extended in flight (if only the RAT is powering the GREEN hydraulic system), at which point power switches to batteries only.
    • On the ground with both engine(s) shut down
91
Q

Discuss the indications and effects of a single generator fault in-flight.

  • With the loss of one generator in flight, the remaining generator ______ supplies AC 1 and AC 2 busses through the ______ _____ bus.
  • Automatic load shedding takes some ______ busses off line.
  • The ______ cannot be restored in flight until a ______ generator comes on line.
  • “________________“ displays at the base of the display to indicate the shedding of some ______ busses.
A

Discuss the indications and effects of a single generator fault in-flight.

  • With the loss of one generator in flight, the remaining generator automatically supplies AC 1 and AC 2 busses through the CROSS TIE bus.
  • Automatic load shedding takes some galleys busses off line.
  • The galleys cannot be restored in flight until a second generator comes on line.
  • GALLEY PARTIALLY SHED displays at the base of the display to indicate the shedding of some galley busses.
92
Q

Understand how the crew will recognise a C/B trip.

  • Most circuit breakers are located in the ______ _________.
  • A circuit breaker ________ ______ monitors the status of all circuit breakers in the ______ compartment and displays the information to the ______ ______ page.
  • If no circuit breakers are tripped, the C/B page displays ______ in ______.
  • If one or more circuit breakers are tripped, the C/B page displays the circuit breaker’s ______ and ______ in ______ and a functional ______ ______ for maintenance purposes in ______
A

Understand how the crew will recognise a C/B trip.

  • Most circuit breakers are located in the avionics compartment.
  • A circuit breaker monitoring unit monitors the status of all circuit breakers in the avionics compartment and displays the information to the ECAM C/B page.
  • If no circuit breakers are tripped, the C/B page displays NORMAL in GREEN.
  • If one or more circuit breakers are tripped, the C/B page displays the circuit breaker’s name and location in white and a functional identification number for maintenance purposes in blue.
93
Q

Understand how to use the Main Generators Inop – Systems Remaining Chart.

  • The chart lists components powered in different ________ electrical configurations.
  • Any systems not listed are ____ ______ at any time during the ________ electrical configurations.
A

Understand how to use the Main Generators Inop – Systems Remaining Chart.

  • The chart lists components powered in different emergency electrical configurations.
  • Any systems not listed are not powered at any time during the emergency electrical configurations.

efa - a330p2f (17 decks)

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