Electrics Flashcards
Where are the pantos located?
No 2 end motor cars
What does the HSCB do?
Disconnects traction equipment from the overhead in the event of over current supply, traction faults or short circuits
What do the traction motors do when there is a defect?
They self isolate
What do traction motors operate on?
Variable 3 phase AC
What do the SIVs power? BATH
Battery charger
Air compressor
Traction cooling fan
HVACs
What happens if one SIV fails?
BATH still works, air cons run at 50% capacity
What indication will you get for a SIV failure?
Maintenance fault and unit light
A SIV light will illuminate on the affect T car
Where is the Panto manual crank handle?
A side no2 end motor car right of door 2
Where are the door control modules? (DCU)
Left of every door
What voltage does the safety loop require?
110v DC
How do you reset the emergency brakes?
Stop train and Into coast/0
How do you test VICERS
- stationary
- can active
- forward
- in coast
What MR pressure does the safety loop break?
600 and below
When does VICERS isolate automatically?
When either the trip or safety loop is bypassed
