Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
96 Cards in this Set
- Front
- Back
|
What does the AUTO position on the IDG selector knob do
|
Closes the IDG contactor connecting the IDG to its respective AC BUS
|
|
|
What does the OFF position on the IDG selector knob do
|
Opens the IDG contactor isolating it form its respective AC BUS
|
|
|
What does the DISC position on the IDG selector knob do
|
Holding it for 1 second will mechanically disconnect the IDG-Can only be reset by MX
|
|
|
What does the amber LED indicate
|
Which IDG has failed and which one must be disconnected-Will go off after disconnection
|
|
|
The pushed IN position on the APU GEN button does what
|
Connects the APU generator to the APU BUS TIE according to source priority
|
|
|
The pushed OUT position on the APU GEN button does what
|
Opens the APU generator contactor and isolates the APU generator from the AC bus tie
|
|
|
What button will cause the white striped bar to illuminate
|
APU GEN pushed out
|
|
|
What does the AUTO position of the AC BUS ties do
|
Controls the operation of the BTC's according to systems logic
|
|
|
What does the open 1 or open 2 position of the AC BUS ties switch do
|
Opens the respective BTC 1 or BTC 2
|
|
|
What does the 2 open position of the AC BUS ties
|
Opens BTC 2
|
|
|
When ground power is plugged in and the quality is good what indication will there be outside and inside the cockpit
|
AVAILABLE light will be illuminated on the GPU button in the cockpit and outside
|
|
|
What happens if only the ground personnel push in their GPU button
|
Only the AC and DC ground service buses will be connected
|
|
|
The pushed in position of the cockpit GPU button does what
|
It will connect the aircraft GPU to the AC BUS ties according to source priority
|
|
|
How many transformer rectifier unit switches are there
|
3
|
|
|
What does the AUTO position of TRU 1 and TRU 2 do
|
Connects the TRU to the respective DC BUS
|
|
|
What does the OFF position of TRU1 and TRU 2 do
|
Disconnects the respective TRU from its DC BUS
|
|
|
What does the AUTO position of TRU ESS do
|
Allows automatic operation and connects the TRU ESS to the DC ESS BUS 3
|
|
|
What does the OFF position of TRU ESS do
|
Isolates the TRU ESS from ESS BUS 3
|
|
|
Does battery 1 supply power when the BATT 1 selector is OFF
|
Only to HOT BATT BUS 1
|
|
|
What occurs when the BATT 1 selector is placed in ON
|
The battery is connected to DC ESS BUS 1
|
|
|
What occurs when the BATT 2 selector is placed in AUTO
|
Connects BATT 2 to the DC ESS BUS 2
|
|
|
What does the AUTO position of the DC BUS TIES do
|
Controls the operation of the DC TIE contactors according to systems logic
|
|
|
What does the OFF position of the DC BUS TIES switch do
|
Opens all contactors
|
|
|
Are the IDG ICONS on the MFD always in view when the IDG's are not powered
|
Yes
|
|
|
Will the AC GPU ICON always be in view on the MFD
|
Only when the AC GPU is connected
|
|
|
Will the AC APU ICON always be in view on the MFD
|
Only after the APU is available (3 seconds after 95% RPM is achieved)
|
|
|
What does a white APU ICON beneath an AMBER cross mean
|
APU FAIL
|
|
|
The battery ICON is always displayed on the MFD. How can you tell if the voltage is good
|
Displayed in green on the MFD when greater than 18 volts
|
|
|
What does it mean when the battery associated digits turn RED on the MFD
|
BATT TEMP has reached 70 degrees for 2 seconds
|
|
|
When is the DC external GPU power used
|
For external start
|
|
|
When is the RAT ICON displayed
|
Only when deployed
|
|
|
Excluding the GPU, how many sources of AC power are there
|
4
|
|
|
How many KVA does each IDG and APU supply
|
40 KVA, 115 VAC, 400 Hz 3 phase
|
|
|
How many KVA does the RAT supply
|
15 KVA, 115 VOLTS, 400 Hz 3 phase
|
|
|
When will the RAT deploy automatically
|
With the loss of total AC power
|
|
|
What does the RAT power
|
AC ESS BUS
|
|
|
What is the primary alternate source of power for the ACC ESS BUS
|
RAT
|
|
|
What has AC priority, the APU or GPU
|
APU
|
|
|
What powers the APU start bus during APU start
|
BATT 2
|
|
|
What is required before disconnecting the AC GPU even if the AVAIL light is illuminated
|
Flight crew mush push out the AC GPU pushbutton
|
|
|
What is the alternate source of power for the AC STBY BUS
|
The inverter
|
|
|
How long does it take for the RAT to supply power once deployed
|
8 seconds
|
|
|
What supplies power during the 8 seconds it takes for the RAT to suppply power
|
Batteries
|
|
|
What is shed when the RAT is powering the aircraft
|
Galley power and FO windshield heat
|
|
|
Is there am altitude, or airspeed restriction for RAT use
|
Altitude-No
A/S-130 MIN,VMO/MMO MAX |
|
|
During normal operation TRU 1 supplies power to what
|
DC BUS1
DC ESS BUS 1 DC GRND SVC BUS HOT BATT BUS 1 BATT #1 CHARGING |
|
|
During normal operation TRU 2 supplies power to what
|
DC BUS 2
DC ESS BUS 2 HOT BATT BUS 2 BATT #2 CHARGING |
|
|
During normal operation TRU ESS supplies power to what
|
DC ESS BUS 3
|
|
|
When are the batteries being charged
|
Constantly charged by any AC source through the TRU, including GPU and RAT
|
|
|
How long do the batteries last during an electrical emergency
|
10 minutes
|
|
|
How long does the lead acid battery last
|
15 minutes
|
|
|
What is the purpose of the stanby lead acid battery
|
Power for the flight controls in case all power and back ups fail
|
|
|
What is the minimum temperature required on BATT 2 for and APU start
|
-20 Degrees
|
|
|
What would you do if the BATT 2 were colder than -20 degrees
|
Use the DC GPU
|
|
|
Briefly describe the electrical power distribution and control system
|
It consists of 4 intergrated control centers (ICC's) and 2 secondary power distribution assemblies (SPDA's)
|
|
|
Name the four ICC's
|
Left ICC
Right ICC Emergency ICC Auxillary ICC |
|
|
Where are the ICC's located
|
L&R-Middle E Bay
Aux-Aft E Bay Emerg-Fwd E Bay |
|
|
What do the ICC's contain
|
Thermal circuit breakers
line replaceable units Line replaceable modules AC/DC electrical buses |
|
|
Which ICC houses the HOT BATT 2 and the APU Start Bus
|
Aux ICC
|
|
|
What do the SPDA's do
|
It is an electrical load management unit
|
|
|
Each SPDA has specific slots that house what
|
Electronic modules
|
|
|
What powers SPDA 1
|
DC BUS 1
DC ESS BUS 1,2 DC GRN SVC |
|
|
What powers SPDA 2
|
DC BUS 2
DC ESS BUS 1,2 DC GRND SVC |
|
|
What type of CB protection is incorporated into the SPDA;s
|
Electronic CB's
|
|
|
Can the remote electronic CB's be monitored
|
Yes, through the MCDU
|
|
|
State the source priority for powering the AC main buses
|
Respective IDG
APU GPU(IF ON GRND) OPPOSITE IDG On side,inside,outside,crosside |
|
|
Where is SPDA 1 located
|
Fwd E Bay
|
|
|
Where is SPDA 2 located
|
Mid E Bay
|
|
|
The aircraft is ___ powered but ___ dependent
|
AC-DC
|
|
|
What is the power rating of each Intergrated Drive Generator (IDG's)
|
40 Kva,115 VAC,400 Hz, 3 phase
|
|
|
What is the power rating of the RAT
|
15 kVA, 115 vac, 400 HZ, 3phase
|
|
|
When using the Disc switch on the electrical panel how does that differ from using the OFF Switch
|
The DISC position disconnects the IDG from the accessory drive. It can't be reconnected.
|
|
|
How does each IDG differ from APU generator with regards to oil
|
Each IDG has its own oil reserve and oil cooling. They do not use engine oil. The APU has shared oil cooling
|
|
|
What is the power rating of the APU generator
|
40 Kva,115 VAC,400 Hz, 3 phase
|
|
|
Where is the RAT located
|
Lower RT hand section of the nose
|
|
|
When is power available from the IDG
|
At 12000 RPM @50% N2 the AC GEN should come on line and PWR the system
|
|
|
What causes the DISC light to come on
|
Low oil pressure or High oil temperature
|
|
|
What does the DC GPU Power
|
APU Start bus only
|
|
|
What does the AC GPU power
|
Entire system
|
|
|
What makes up the AC system
|
2 IDG's
1 APU 1 Inverter 1 RAT 1 AC external power unit |
|
|
What makes up the DC system
|
2 Nicad batteries
3 TRU's 1 DC external power unit |
|
|
Where are the AC and DC GPU's located
|
AC GPU-Front LT of A/C
DC GPU-Rear LT of A/C |
|
|
What is the function of the SPDA's
|
Routes all the information from the ICC's
|
|
|
What is contained in the FWD E BAY
|
BAT 1
RAT GEN. CONTROL UNIT EICC STATIC INVERTER |
|
|
What is contained in the AFT E BAY
|
APU GEN
AICC BAT 2 |
|
|
Which ICC's are contained in the Central E BAY
|
LEFT ICC
RIGHT ICC |
|
|
What is the purpose of the single inverter
|
To power the AC STBY BUS for the engine igniters
|
|
|
What is the total number of buses
|
13
|
|
|
How many buses are powered with just battery power
|
6
DC ESS 1,2,3 Hot Bat 1 and 2 AC STBY Bus |
|
|
Durin an APU START how does systems logic work with only battery power available
|
BATT 1 will power DC ESS BUS 2 which is normally powered by BATT 2. The DC ESS BUS 2 also powers the DC FUEL PUMP for APU start, normally controlled by BATT 2 now being controlled by BATT 1. The BATT 2 disconnects from DC ESS BUS 2 and connects to the APU STBY BUS
|
|
|
What is the input of each TRU
|
115 VAC 400HZ
|
|
|
What is the output of each TRU
|
28 V DC @ 300 AMPS
|
|
|
How are the batteries charged
|
By any AC source
|
|
|
How many volts are required on the battery when doing the preflight
|
22.5
|
|
|
What does IDG mean
|
Integrated Drive Generator-Has its own oil system
|
|
|
What would happen if the IDG had a problem and failed to shutdown
|
It has shear protection and would seperate from the drive
|
