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Old October 10th, 2008, 06:35 PM   #1
serdar samanlı
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MISC | Metros with overhead wires

Most metros receive power from the third rail but there are metros that use overhead wires. One example is Rome metro. Are there other examples?

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Old October 10th, 2008, 06:54 PM   #2
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Boston's Blue line, and Clevelands Red Line are the ones in the US.

I think one of the lines of the Chicago L was overhead powered at one time but was converted to third rail.

Also, though it's technically Light Rail, the Green Line in LA is entirely grade seperated almost like a metro

Last edited by zaphod; October 10th, 2008 at 08:18 PM.
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Old October 10th, 2008, 06:58 PM   #3
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Old October 10th, 2008, 08:08 PM   #4
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Both systems of Barcelona Metro use overhead wires

FGC


TMB


All systems in Bilbao
Metro


Feve



Eusko-Tren



Madrid





Palma de Mallorca



Valencia



Which means that all spanish metros use this type.
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Old October 10th, 2008, 08:15 PM   #5
Tiago Costa
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In Săo Paulo, Line 5 have overhead catenary:






Line 4 (in construction) and all other new lines will have overhead electric supply.
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Old October 10th, 2008, 08:36 PM   #6
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Milan, Genova, Rome, Naples, Catania
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Old October 10th, 2008, 08:38 PM   #7
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Almost all of Tokyo's system has overhead catenary. Out of the fourteen lines Tokyo Metro + Toei lines, only three do not run on overhead catenary (Ginza, Marunouchi, and Oedo Lines). The Ginza and Marunouchi Lines were the first two subways built and use third rail, while the Oedo Line uses linear motor technology. All lines built later were standardized with the suburban/commuter/private networks to facilitate through-servicing, which is why most of the stock designs, gauges, etc. are all quite similar... This carried through to the power systems, since the suburban/commuter/private networks were all overhead catenary.

Tokyo Metro 05 series, used on the Tokyo Metro Tozai Line


Toyo Rapid 2000 series, based on the Tokyo Metro 05 series. The trains runs through-services with the Tokyo Metro Tozai Line.
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Old October 10th, 2008, 09:27 PM   #8
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Vienna's U6, as opposed to the 4 other lines.
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Old October 10th, 2008, 09:42 PM   #9
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Lyon line C, Hong-Kong, Singapore line NE, Delhi, Seoul
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Old October 10th, 2008, 09:48 PM   #10
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Shanghai uses 1500VDC overhead power on all lines.
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Old October 10th, 2008, 10:01 PM   #11
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what are the advantages and disadvantages of overhead catenary
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Old October 10th, 2008, 10:09 PM   #12
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Quote:
Originally Posted by DJZG View Post
what are the advantages and disadvantages of overhead catenary
Advantages:

More efficient (higher voltage)
No clutter or hazards at track level
Not affected by snow & ice (unlike 3rd / 4th rail)
Not affected by spurious 'earths' or flooding (unlike 3rd / 4th rail)

Disadvantages:

When wires are brought down (debilitating until re-erected)
Can jump quite far and is lethal (hazardous to workers)
Restricts access if a train has derailed
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Old October 10th, 2008, 10:23 PM   #13
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Manila LRT and MRT Network


The stations in LRT Yellow really really need a facelift.. they're old.. from the 70s.
Unlike the LRT Purple:


LRT Purple is newer.



MRT Blue has butt ugly wires.
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Old October 11th, 2008, 02:01 AM   #14
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Eukotren and Metro Bilbao are my favorites.
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Old October 11th, 2008, 03:31 AM   #15
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Quote:
Originally Posted by Tubeman View Post
Advantages:

More efficient (higher voltage)
No clutter or hazards at track level
Not affected by snow & ice (unlike 3rd / 4th rail)
Not affected by spurious 'earths' or flooding (unlike 3rd / 4th rail)

Disadvantages:

When wires are brought down (debilitating until re-erected)
Can jump quite far and is lethal (hazardous to workers)
Restricts access if a train has derailed
Catenary is also more expensive and more difficult to access for maintenance than 3rd rail.
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Old October 11th, 2008, 04:33 AM   #16
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Barcelona metro had got 3rd rail in many lines until 2004, now ALL lines have got overhead wire.
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Old October 11th, 2008, 06:30 AM   #17
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Bursa, Turkey

Bursaray uses overhead wires and Istanbul's M1 line use overhead wires.
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Old October 11th, 2008, 07:50 AM   #18
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Copenhagen's S-Train system

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Old October 11th, 2008, 11:46 AM   #19
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S-Tog, FEVE and EuskoTren are not real metros.
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Old October 11th, 2008, 01:26 PM   #20
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Quote:
Originally Posted by Bitxofo View Post
Barcelona metro had got 3rd rail in many lines until 2004, now ALL lines have got overhead wire.
Could you explain me why?
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