Electrical Flashcards
How many batteries and what type are installed
2 Lead Acid
What is the AMP Hour Rating for each battery
Batt 1: 34
Batt 2: 36 (48 with Mod)
What is the minimum recommended battery temperature for battery start
Standard: -10C
Modified: -18C
What is the minimum voltage required for a battery start
24V
Configuration: On ground, BATT 1 and BATT 2 in the OFF position, Which buses are powered?
HOT BATT BUS 1 and HOT BATT BUS 2
Configuration: On ground, BATT 1 and BATT 2 in the ON position. Which buses are powered?
1) HOT BATT BUS 1
2) HOT BATT BUS 2
3) EMERGENCY BUS
4) DC BUS 1
5) DC BUS 2
6) CENTRAL BUS
What is the voltage range for the aircraft to accept GPU power?
25-30V
What is the indication that the aircraft is accepting GPU power?
GPU AVAIL
What is the function of the 1 OPEN or 2 OPEN position of the BUS TIE switch
Forces the respective bus tie open against system logic, The opposite side functions normally.
On the ground, if the BATT 1 and BATT2 are in the on position, the GPU is connected and powered and button pushed in and the electrical system indicates 28V. Which buses are powered
All of them
Which buses and equipment are powered by BATT 2 during engine start?
1) HOT BATT BUS 2
2) CENTRAL BUS
3) ENGINE STARTER
Which buses are powered by BATT 1 during engine start?
1) HOT BATT BUS 1
2) EMERGENCY BUS
3) BOTH DC BUSES
How does DC BUS 2 receive power during engine start
Quiet Start Contactor
Which buses are depowered during engine start
1) SHED BUS 1
2) SHED BUS 2
What are the positions of the Bus Tie Contactors (BTC 1 and 2) during engine start
Both Open
What are the positions of the Bus Tie Contactors (BTC 1 and 2) during normal ops
BTC 1: Open
BTC 2: Closed
In flight, during normal ops, which buses are powered by GEN 1
1) HOT BATT BUS 1
2) EMERGENCY BUS
3) DC BUS 1
4) SHED BUS 1
In flight, during normal ops, which buses are powered by GEN 2
1) HOT BATT BUS 2
2) CENTRAL BUS
3) DC BUS 2
4) SHED BUS 2
In flight, with a GEN 1 failure, what happens to the contactors and what buses are lost (if any)
1) Generator Line Contactor 1 Opens
2) Shed Buses 1 and 2 Contactors Open
3) Bus Tie Contractors (BTC) 1 Closes and BTC 2 Remains Closed
4) You lose both the SHED buses only.
In flight if GEN 1 already failed and GEN 2 fails (Electrical Emergency) What is the position of the contractors and what buses do you have remaining?
1) GLC 1 remains open GLC 2 Opens
2) SBC 1 and 2 remain Open
3) BTC 1 and 2 Open
4) Emer Bus Contactor (EBC) 1 Opens and EBC 2 Closes
5) You only have the HOT BATT BUSES 1 and 2, EMER BUS and CENTRAL BUS
What is the battery duration in the Electrical Emergency configuration following automatic or manual electrical transfer
45 mins
