Electrics

Question 1

How many volts is the DC system?

Answer 1

28V

Question 2

How many volts is the AC system?

Answer 2

115/200

Question 3

How many hertz is the AC system?

Answer 3

400Hz

Question 4

How many AC generators are there?

Answer 4

3 - GEN 1, GEN 2 and APU GEN

Question 5

What KVA are the generators rated at?

Answer 5

90KVA

Question 6

How many KVA is the emergency generator capable of providing?

Answer 6

5KVA

Question 7

What does GCU stand for? What are they?

Answer 7

Generator Control Units. They are a combined IDG and generator

Question 8

In normal operation, how is AC converted into DC?

Answer 8

Via the two transformer rectifiers

Question 9

What are the two transformer rectifiers rated at?

Answer 9

200A

Question 10

How many transformer rectifiers are there?

Answer 10

3 - they are TR1, TR2 and ESS TR. They are identical

Question 11

What are the batteries permanently connected to?

Answer 11

The two DC hot buses

Question 12

What does BCL stand for? What do they do?

Answer 12

Battery Charge Limiter. They automatically connect and disconnect the batteries to the DC BAT BUS

Question 13

What colour CBs are monitored?

Answer 13

Green

Question 14

What colour CBs are not monitored?

Answer 14

Black

Question 15

Which CBs have red caps? Why?

Answer 15

`Wing tip brakes. To prevent crew resets

Question 16

What happens if a monitored CB trips?

Answer 16

After 1 minute, ECAM stating ELEC C/B TRIPPED

Question 17

What happens if the CLR pb is used to clear a tripped C/B? What if that C/B is reset?

Answer 17

CBs on the same panel are ignored, unless the affected CB is reset, in which case they all become monitored again

Question 18

What happens to the CBs if the EMER CANC pb is used?

Answer 18

ALL CBs remain unmonitored for the remainder of the flight

Question 19

In normal operation with both engines running, where does AC ESS BUS get its power from?

Answer 19

AC BUS 1

Question 20

In normal operation with both engines running, where does DC ESS BUS get its power from?

Answer 20

DC BAT (not DC 1 as indicated on ECAM)