Loss Of 1500vDC Power Flashcards
1500v DC equipment and circuits include? (5)
Pantos
MAs
Compressors
Traction equip
Associated circuits
The overhead system will try and reset how many times? And then what?
Twice and then Electrol will reset it
What happens to the saloon doors when overhead power is lost?
They release
What happens if overhead power is unable to be restored?
Metrol will request trains in the section lower all pantos
When the overhead has been repaired and reset what happens?
TC will depart trains at one minute intervals and you will have to run in series until the location TC has told you
If there are no comms available, can you assume loss of overhead?
No
How do you check for 110vdc
Bell
LP flag lowered EP brake operational
Supply light
How do you check AC power?
Illumination of non emergency saloon lights
Can area cab light
Headlights
If there are no comms how long do you have to wait to apply traction power? And what do you run in?
30sec up trains
60 sec down trains
Run in series to next station and advise TC
What do you do if overhead is disarranged?
Stay in cab PA to tell people don’t get off the train
How long do emy lights and PA operate for?
2 hours
How do you know you need to reset the PA and emy lighting? And how do you do it?
Battery charger light will flash. Turn marker light switch from auto to something else then back to auto
What is the LSM?
Loss of overhead shutdown module is designed to reduce the impact of 1500v defects from overloading the substation when power is returned
What is the LSM speed threshold?
8kmh
When overhead power is lost how long until VICERS expires and what happens?
5 minutes and the VICERS activation valve will open and dump BP air
