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96 Cards in this Set

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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