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Post by stafford on Oct 16, 2017 18:02:15 GMT
At the tunnel entrance portals the OHLE will cease, and within the tunnels its an overhead rail, what are the arrangements for smooth transition of the panto from one to the other? Something amazing from the Swiss?
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Post by domh245 on Oct 16, 2017 18:49:05 GMT
It is worth noting that the Rigid Overhead Conductor, isn't just an inverted juice rail type installation, it has got a contact wire set in it that the pantograph is in contact with, it simply prevents the need for catenary wires and most of the tensioning equipment. As for the physical transition, I expect that it'll be something like this (the imaginatively named transition bar), the contact wire simply runs into the ROC, the other rails helping to ensure that there is a smooth transition |
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Post by toby on Oct 16, 2017 19:46:25 GMT
www.furrerfrey.ch/en/systems/conductor_rail.htmlGreg Tingey's explanation on LR - '[T]hey simply string a wire parallel & very close to the overhead “rail” for some distance, with the rail slowly rising & the wire descending, so that there is a seamless transition from the p.o.v. of the moving pantograph.'
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Post by melikepie on Oct 17, 2017 8:11:22 GMT
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Post by brigham on Oct 17, 2017 9:01:13 GMT
Passing over Trowse Swing Bridge is anything but seamless.
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Deleted
Deleted Member
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Post by Deleted on Nov 8, 2017 18:04:12 GMT
Hi!
Same system exists in Paris, RER line C, between Invalides and Austerlitz stations. Most of this tunnel section has a very narrow gauge and has been electrified in the first half of last century: due to the lack of space, the system of the "rigid catenary" has been chosen.
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Post by revupminster on Nov 9, 2017 20:09:52 GMT
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