Traction Defects Flashcards
What air does the traction system use?
Control res air
What fault lights are connected to the traction system?
Local
Line switch
This car
What happens when overloads trip?
Power supply is cut to the traction equipment
What does the local fault light tell you
An overload has tripped within the traction equip or rheo braking system
What does the line switch fault tell you?
There’s a fault within the power supply to the traction motors or line breaker case
What does this car light tell you?
The problem is on this car or the park brakes are applied
What are some causes of traction faults? (5)
Control res faults
Pneumatic leaks
Traction overloads tripping
1500v failure
Circuit breaker failures
How much Kpa does the control res need?
490
What happens if there isn’t enough control res air pressure?
Line breakers remain open and traction power is unavailable. Line switch fault will illuminate and there will be no amps to that motor car. Traction cut out to all out
What key do you use for the traction motor cut out switch
Comeng controller key
Do you need the key to put the switch to all out?
No
How do you isolate the fault?
Off
Key in traction cut out switch
Turn to 1&2 out
Overload rest and test train
If line switch remains, repeat the steps with 3&4 out and ALL OUT
Can a driver reinstate the main isolation switch to the normal position?
No
