Electrical Flashcards
What Type Are The Main Batteries And Where Are They Located?
(2) Lithium-Ion Batteries, Located Behind Access Doors On Either Side Of The Fuselage, Aft Of The Wing
What Are The Batteries Rated At
27 Volts and 44 Amp Hours
How Long Can The Batteries Provide Power To The Emergency Bus Items?
At Least 42 Minutes
- If Emergency Power Is Selected Within 5 minutes Of Losing All Generator Power
Where Is The Standby Battery Located?
Left Nose Compartment
What Kind Of Battery Is the Standby?
Lead Acid
What Does The Standby Battery Provide Emergency Power To?
The Standby Flight Display
What’s The Standby Battery Rated At?
24 VDC And 10.5 Amp Hours
How Is The Standby Battery Tested?
The STBY PWR Switch In The Cockpit
The Standby Battery Is Charged From The ________ ________ ________
Left Mission Bus
How Long Does The Standby Battery Provide Power?
180 Minutes Of Electrical Power To The Standby Bus In The Event Right Mission Bus Power Is Lost
An Illuminated Amber Light Adjacent To The STBY PWR Switch Mean?
The Standby Bus Is No Longer Receiving Power From The Right Mission Bus
What Powers The Emergency Lights In The Event Of An Electrical System Failure?
(4) Battery Packs
2 Located On Cockpit Floorboard
2 Located On Aft Pressure Bulkhead
The 4 Battery Packs Are Continuously Charged From?
Emergency Buses
What Are The Engine-Driven Generators Rated At?
28.5 Volt DC
Rated At 500 Amps In Flight
And 400 Amps On The Ground
APU Generator
How Many Volts?
What’s It Rated At?
28.5 Volt DC
400 Amps In Flight
500 Amps On The Ground
GTU (Generator Control Unit)
What Do They Provide?
Regulation
Control
Protection
Selective Disengaging Of Power Generators For Defected Faults
If Using External Power, Unit Must Be Set To?
Between 26-30 Volts And 1500 Amps Max
(Batteries Can Discharge If Below 28.5 VDC)
What Does The Bus Tie Do?
Connects The Left And Right Buses When Only One Power Source Is Available
The Power Transfer And Conversion Unit (PTCU) Can Do What?
Act As A Hydraulically Powered Electrical Generator
The PTCU Is Rated At?
28 Volts DC And 200 Amps In Flight, When In Hydraulic Generator Mode
The PTCU Can Be Powered By?
Either A or B Hydraulic System
The PTCU Can Generate Enough Power To Operate All Electrical Systems On What Buses?
Emer And Mission Buses
Where Are The Inverters, How Many Are There And What Do They Do?
(6) Inverters
Located In The Nose
Converts DC Power To AC Power For The Electrical Windshield Heat
Bus Tie Operation On The Ground Is ____________ And Pushing The Bus Tie Button ____ ____ ______
Automatic
Has No Effect
ELEC NORM/EMER Buttons Do What?
NORM: Controls The Connection Of The Emergency Buses To The Mission Bus
EMER: Disconnects The Emergency Bus From The Mission Bus
The MAIN Buttons Do What?
ON: Connects Main Bus To The Mission Bus
OFF: Disconnects Main Bus From Mission Bus
What Does The Interior Button Do?
NORM: Connects Interior Buses to Mission Bus
OFF: Disconnects Interior Buses From Mission Bus
How Do You Test The STBY PWR?
Hold Switch In The Test Position For 10 Sec To Verify The Battery Has Sufficient Charge
* Green Light Will Illuminate If Battery Is Testing Successfully
What Does The Amber Light Mean When Illuminated On The STBY PWR Panel?
The Standby Bus Is No Longer Receiving Power From The Right Mission Bus
What Does External Power Connect To?
Right Emergency Bus
In Order For Full Windshield Heat, You Need What?
(2) Generators
