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International Railroad Discussion > Sydney ,Australia commuter delays.


Date: 04/17/19 21:22
Sydney ,Australia commuter delays.
Author: DKay




Date: 04/18/19 05:11
Re: Sydney ,Australia commuter delays.
Author: choodude

DKay Wrote:
-------------------------------------------------------
> How did this darwin contender not get fried.....

He didn't touch a ground, and therefore did not complete a circuit.

Birds often sit on the catenary in Baltimore's Penn Station.  They are fine unless they flap their wings and touch the steel beams holding up the canopy.

Brian 



Date: 04/18/19 16:25
Re: Sydney ,Australia commuter delays.
Author: DKay

Thats what I was thinking,but wondered how he avoided completing the circuit while getting there(from an over pass/footbridge I assume )
Regards,DK



choodude Wrote:
-------------------------------------------------------
> DKay Wrote:
> --------------------------------------------------
> -----
> > How did this darwin contender not get
> fried.....
>
> He didn't touch a ground, and therefore did not
> complete a circuit.
>
> Birds often sit on the catenary in Baltimore's
> Penn Station.  They are fine unless they flap
> their wings and touch the steel beams holding up
> the canopy.
>
> Brian 



Date: 04/27/19 08:08
Re: Sydney ,Australia commuter delays.
Author: PHall

There's also the question on what voltage is involved.
At 600 volts the "arc distance", is about 3 or 4 inches. Meaning you can be 6 inches away and not get fried.
Something like the 25,000 volts that is used on Amtrak's Northeast Corridor in the US the arc distance is about 30 inches.



Date: 04/27/19 15:42
Re: Sydney ,Australia commuter delays.
Author: chakk

It's not the volts -- it's the amps that will kill you.

 U Tube  https://www.youtube.com/watch?v=9LPgBkBNwPQ



Edited 1 time(s). Last edit at 04/27/19 15:44 by chakk.



Date: 04/27/19 19:36
Re: Sydney ,Australia commuter delays.
Author: 4745

Sydney trains run on 1500v dc.
Older system based off the English in the 1950's.
Graham.



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