Electrical

Question 1

How many batteries and what type are installed

Answer 1

2 Lead Acid

Question 2

What is the AMP Hour Rating for each battery

Answer 2

Batt 1: 34
Batt 2: 36 (48 with Mod)

Question 3

What is the minimum recommended battery temperature for battery start

Answer 3

Standard: -10C
Modified: -18C

Question 4

What is the minimum voltage required for a battery start

Answer 4

24V

Question 5

Configuration: On ground, BATT 1 and BATT 2 in the OFF position, Which buses are powered?

Answer 5

HOT BATT BUS 1 and HOT BATT BUS 2

Question 6

Configuration: On ground, BATT 1 and BATT 2 in the ON position. Which buses are powered?

Answer 6

1) HOT BATT BUS 1
2) HOT BATT BUS 2
3) EMERGENCY BUS
4) DC BUS 1
5) DC BUS 2
6) CENTRAL BUS

Question 7

What is the voltage range for the aircraft to accept GPU power?

Answer 7

25-30V

Question 8

What is the indication that the aircraft is accepting GPU power?

Answer 8

GPU AVAIL

Question 9

What is the function of the 1 OPEN or 2 OPEN position of the BUS TIE switch

Answer 9

Forces the respective bus tie open against system logic, The opposite side functions normally.

Question 10

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

Answer 10

All of them

Question 11

Which buses and equipment are powered by BATT 2 during engine start?

Answer 11

1) HOT BATT BUS 2
2) CENTRAL BUS
3) ENGINE STARTER

Question 12

Which buses are powered by BATT 1 during engine start?

Answer 12

1) HOT BATT BUS 1
2) EMERGENCY BUS
3) BOTH DC BUSES

Question 13

How does DC BUS 2 receive power during engine start

Answer 13

Quiet Start Contactor

Question 14

Which buses are depowered during engine start

Answer 14

1) SHED BUS 1
2) SHED BUS 2

Question 15

What are the positions of the Bus Tie Contactors (BTC 1 and 2) during engine start

Answer 15

Both Open

Question 16

What are the positions of the Bus Tie Contactors (BTC 1 and 2) during normal ops

Answer 16

BTC 1: Open
BTC 2: Closed

Question 17

In flight, during normal ops, which buses are powered by GEN 1

Answer 17

1) HOT BATT BUS 1
2) EMERGENCY BUS
3) DC BUS 1
4) SHED BUS 1

Question 18

In flight, during normal ops, which buses are powered by GEN 2

Answer 18

1) HOT BATT BUS 2
2) CENTRAL BUS
3) DC BUS 2
4) SHED BUS 2

Question 19

In flight, with a GEN 1 failure, what happens to the contactors and what buses are lost (if any)

Answer 19

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.

Question 20

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?

Answer 20

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

Question 21

What is the battery duration in the Electrical Emergency configuration following automatic or manual electrical transfer

Answer 21

45 mins