Electrical Faults

Question 1

What does the local fault light indicate?

Answer 1

Overload has tripped on a motor car

Question 2

What does the line switch fault light indicate?

Answer 2

A fault within power supply to traction motor. A line breaker has failed to close on a motor car

Question 3

What does rheo brake fault light indicate?

Answer 3

Rheo brake has failed to set up correctly on a motor car

Question 4

How do you reset the rheo brake fault

Answer 4

Press traction equip reset button. If light is still on, toggle switch instead

Question 5

What does a steady air con light indicate?

Answer 5

One air con has failed on one car

Question 6

What does a flashing air con light mean?

Answer 6

At least one car has two air cons out

Question 7

Where is no. 1 air con light?

Answer 7

Drivers cab roof

Question 8

Why does a wheel slip light illuminated mean while stationary?

Answer 8

Fault with the wheel slip unit and it’s associated equipment

Question 9

What does a wheel slip light in motion mean?

Answer 9

There’s a difference in speed of more than 15km between axles on one m or t car while powering or braking

Question 10

What else is connected to the this car light?

Answer 10

Local park brakes

Question 11

The control circuit is how many volts?

Answer 11

110vdc

Question 12

What does the control circuit operate? (6) MRTESC

Answer 12

Master controller and reverser
Traction equip reset button
Remote Panto raise and lower
Electric brake demand circuit
Speedo
Control gov

Question 13

If the control circuit breaker trips what happens?

Answer 13

Master controller is inoperative and no train lined signals can be sent to traction equip. Therefore you cannot drive the train from that motor

Question 14

What do you do if the control CB trips after pushing Panto raise button?

Answer 14

You have to raise all the pantos locally on each motor
TMM

Question 15

What do you do if the control CB trips after pushing remote Panto lower button?

Answer 15

Reset CB
Electrically isolate the Panto EP switch
Press remote Panto lower
If the CB still trips Cut Panto back in and repeat above steps on each m car

Question 16

Can a train remain in service if pantos cannot be electrically lowered remotely?

Answer 16

No

Question 17

What do you do if the control CB trips after pushing traction equip reset button?

Answer 17

Find the motor with this car light
Place to all out
TMM

Question 18

What does it mean if the control CB trips before you have even touched anything?

Answer 18

There is a short circuit between the control CB and the reverser

Question 19

What does it mean if the control CB trips with reverser in F, N, R and brake 1-7

Answer 19

Fault could be in the train cable or rheo brake control equip

Question 20

If the fault was with the rheo brake how would you fix it?

Answer 20

Rheo brake iso switch to isolate
Try to reset the CB
If that doesn’t work, rheo back to normal and trip EP circuit breaker
Try to rest the CB

Question 21

What do you do if the control CB trips while the master controller is open?

Answer 21

Determine which power notch is causing it to trip and drive in anything but that. If that doesn’t work out traction motors to all out if that doesn’t work do it in the leading centre motor if that doesn’t work divide and attach non electrically

Question 22

What does the train cable carry and what is the connection?

Answer 22

110v and is connected between the centre motors by spring loaded contacts on the coupler

Question 23

What is connected to the Aux control circuit breaker? BADSCAS

Answer 23

Bell
Aux start
Door buttons
Saloon lights on off
Couple and uncouple
Air con
Self centering device

Question 24

If you loose an MA what happens? (4)

Answer 24

Half saloon lighting in each car
Half air con in each car
Half cab lighting and heating
Rheo on the car with the MA out will be inoperative

Question 25

How do you know which MA is inoperative?

Answer 25

Air con fault light in cab roof

Question 26

How many MAs do you need for full lighting?

Answer 26

4/all

Question 27

How many DC supply circuit breakers do you need set?

Answer 27

At least 1 and the train must be removed from service
0 CB means train is disabled