Electrification Flashcards
(19 cards)
What are the components of the diagram?
Catenary line
Dropper
Contact wire
Head span wire
Cross span wire - neutral
Cross span wire - live
Insulators
Mast / structure post
Structure number plate
Along track conductor
Bond
What does OLE stand for?
Overhead line equipment
How many volts are running through the OLE?
25000 alternative current (AC)
What is the minimum safe distance away from the OLE?
2.75m away from the line
Who is the OLE controlled by?
Electrical Control Operator (ECO)
Should we always consider the OLE as live?
Yes, this should always be considered to be live
With natural selection how far are the sections with the OLE?
15 mile sections
How far between each section for the ceramic bead?
15 feet where power isn’t transferred
Would an electric train gain power again after stopping in natural section?
No it would not gain power to move again
How far away should you stay from the national power lines?
5 metres away
What do we do if the national power lines falls onto the railway?
Contact the ECO/ Signaller and they will arrange isolation with the power company
What is the can’t line?
A 2.5m strip in orange below the roof of every train
What does the can’t line signify?
You must not go above this line as you will be at risk of contact the OLE
What currency and how much is going through a conductor rail?
650-750 volts direct current (DC)
Who controls the current in the conductor rail?
The ECO
Can you touch the conductor rail?
No, make sure nothing or no one comes in contact with the conductor rail
Do we consider the conductor rail to be live?
Yes, at all times
Can we step or touch the conductor rail?
No, we do not step or touch the rail or peotective guard. Make sure all clothes and garments do not touch as well as yourself.
Can we step between the conductor rail and running rail?
No we can not step between the conductor rail and the adjacent running rail, we should step over the conductor rail in one movement
