3rd rail and OHLE

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DJC_158

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hello all,

this may be a stupid question, but i have always wondered whether trains that are either powered by 3rd rail or OHLE would not run during a thunder storm.

im not an expert on Electric trains, but i would have thought that they would have some form of a safety cut system in the event of a power serge or during a thunder storm so that it cuts out all power safely.

cheers
dan
 
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Nick W

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The OHLE cables aren't high up compared to high-voltage electric pylons so I doubt the risk is taht great.

Surely lightning hitting a line will do more damage to the line than any frying it may cause to a train.
 

O L Leigh

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No problems. Both the supply systems and traction have safety cut-outs to deal with power surges.

A lightning strike to the OLE is more likely to cause physical damage to the infrastructure than any electrical interference.

one TN
 

LucaZone

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As the electrical wires are totally isolated anyway, wouldnt this prevent a strike that hits a pylon from connecting with the wires? So the strike would just earth straight away.
 

Respite

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I've only ever heard of a few lightning strikes on the actual wires & this did operate the safety cut off's as well as blow a few insulators.
 

Dennis

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Lightning affecting signalling seems to be a more common problem - every time there's a bit of thundery weather a pile of delays seem to be attributed to this.
 

Respite

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Lightning affecting signalling seems to be a more common problem - every time there's a bit of thundery weather a pile of delays seem to be attributed to this.
Yep modern signalling only seems to require a slight surge & thats it relays fried! Mind You I always had reservations about pulling levers attached to metal point rodding & 100's yds of steel cable in the middle of a thunder & lightning storm when I worked manual boxes :sad10: :)
 
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