Pantograph and overhead catenary at high speed

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  • Опубліковано 24 гру 2024
  • A pantograph interacting with the overhead catenary and its elements - section insulators, intersections and neutral sections at speed up to 160 km/h.
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  • Наука та технологія

КОМЕНТАРІ • 130

  • @RickJando
    @RickJando 6 років тому +76

    I am amazed at how the overhead lines cope being how fragile they look.

    • @blue9multimediagroup
      @blue9multimediagroup 4 роки тому +5

      Each wire is at least an inch thick

    • @peterlane354
      @peterlane354 3 роки тому +2

      It’s all down to the material used. in UK contact wire has area of around 25 sq mm which gives a cross section of roughly 10mm

    • @stormyson2408
      @stormyson2408 3 роки тому +1

      Just to give an idea of the strength the tensions are typically between 9 and 20 kN (2,000 and 4,500 lbf) per wire

    • @timhinchcliffe5372
      @timhinchcliffe5372 4 дні тому

      The contract metal on the pantograph would be softer... from my 2 second Google research, it's a copper alloy.

  • @GFSwinger1693
    @GFSwinger1693 4 роки тому +48

    Interesting, it looks almost as is the overhead lines intentionally drift side to side to prevent wear on any one point in the contact pad. Never noticed that before.

    • @weeardguy
      @weeardguy 4 роки тому +21

      Yes, they are intentionally mounted like that. The national railways in my country (Netherlands) even experimented with different ways of mounting the wires. Besides 2 wires running parallel to eachother all the time, while zig-zagging from side to side, they also tested with 2 wires with varying width between them (instead of zig-zagging, they continously got closer and further apart from eachother again).
      The complexity of the last system lead to the further adaption of the standard zig-zag configuration.
      It's pretty neat when you think about all the engineering that went into stuff like this. Contact pressure of the whole mechanical system is specified to very tight limits (I think 18 kilo's maximum upwards pressure in the Netherlands) to prevent wear to both the wire and contact shoes as much as possible (and to prevent catastrofic failures to the overhead line equipment as well), the pantographs have to lower and rise within tightly set limits (to avoid damaging sparks/arcs to occur), everything has to be mounted isolated and on top of that is has to sustain high wind pressure while keeping upwards pressure stable...

    • @Jesusblessings79
      @Jesusblessings79 27 днів тому

      How you doesn't notice it is pretty obvious if ohe is in line and constant than pantograph pad got cuts and it may causes the wire to stuck on that formed gap if this happened than if train goes on a curve than it pulls the wire and so that the wire may broke...

  • @stevedoubleu99B
    @stevedoubleu99B 4 роки тому +22

    The humble pantograph, one of those creations that, when one stops to think about what it has to do, it suddenly becomes a very impressive piece of equipment!!

  • @ridefast0
    @ridefast0 6 років тому +26

    Sir - may I thank you for your continued uploads and for the care you take to set up the cameras and to convey the technical information. Please continue!

  • @Trainfan1055Janathan
    @Trainfan1055Janathan 6 років тому +15

    Do the lights flicker in the train when you lower the pantograph?

    • @coat.thik1
      @coat.thik1 6 років тому +1

      Trainfan1055 maybe yes

    • @gospodinBezkrai
      @gospodinBezkrai 5 років тому

      yes they do, and the brighter ones get turned off. i was wondered why they disconnect from the electricity line when coming to the city, now i realise! :)

    • @fluffymuffy8451
      @fluffymuffy8451 4 роки тому

      Yes

    • @Iconic_maya9
      @Iconic_maya9 3 місяці тому

      When the Metro north M8’s switch tracks or connect the Pantograph to the Overhead wires, the electricity in the outlets turn off

  • @Bandicoot803
    @Bandicoot803 8 місяців тому

    Back in the early 2000's I once took the train on a sub-zero degree celsius winter day. As the train departed, I saw an array of a light show from the arcing pantograph. A while later the loc driver raised the second pantograph, this had an immediate effect of reducing the thunderbolt show to almost zero. The catenaries were contaminated with frost throughout the whole trajectory, that caused the first pantograph to spark like crazy.

  • @hassanburrows8535
    @hassanburrows8535 6 років тому +21

    Is there any advantage in having the pantograph trail the direction of travel rather than lead it?
    I was wondering if, as leading in this video, there might be a greater risk of snagging the overhead line if there was some defect. Thanks.

    • @am74343
      @am74343 6 років тому

      I was thinking the same thing. You'd think that when it faces forward, the force would push upward and could damage the line.

    • @thomasgabler3476
      @thomasgabler3476 6 років тому +14

      Single arm pantographs are optimised to behave equally in both directions. The friction between the catenary and the pickup shoe is neglectible.

    • @hassanburrows8535
      @hassanburrows8535 6 років тому

      Thanks for your response. I wondered because the Pendulono units here in the UK have two pantographs, but only one is in use, as far as I have seen thus far. Perhaps the two pantographs cover the possibility of getting stranded in a section gap.

    • @thomasgabler3476
      @thomasgabler3476 6 років тому +9

      It's mostly for redundancy. If one pantograph gets damaged you can continue the trip with the other one.

    • @izzieb
      @izzieb 6 років тому +2

      Hassan Burrows While not the case in this instance, mutiple pantographs can also create vertical oscillations that may cause interactions that would damage to the pantographs/overhead lines.
      Restrictions will be specific to the lines and stock running on said lines, but generally above 100mph the less pantographs the better.

  • @vel0city96
    @vel0city96 6 років тому +67

    That bridge in the beginning though requiring a pantograph lowering or it'll get torn off :')

    • @kamilblazek4000
      @kamilblazek4000 5 років тому +20

      There was signal (trafic sign), first "Prepare to pantograph lowering" (0:20) and then "Pantograph lowering (0:35).

    • @PanosSkarp
      @PanosSkarp 5 років тому

      @@kamilblazek4000 why did they do that?

    • @PanosSkarp
      @PanosSkarp 5 років тому +1

      @Leonardo Sestan lower the panto graph. Was it because the bridge was too low and the wasn't enough space above?

    • @PanosSkarp
      @PanosSkarp 5 років тому

      @Leonardo Sestan oh that I didn't know

    • @gospodinBezkrai
      @gospodinBezkrai 5 років тому +4

      @@PanosSkarp this bridge is quite old, from before the line was electrified

  • @BruceC
    @BruceC 2 роки тому

    Mesmerizing - have seen it many times and never tire of it

  • @InverhavonRailways
    @InverhavonRailways 6 місяців тому

    On the Elizabeth line and Thameslink the contact wire is replaced by an overhead conductor rail in tunnel sections.

  • @wahajuddin2323
    @wahajuddin2323 2 роки тому +1

    The speed amazed me.

  • @oasis71
    @oasis71 4 роки тому +1

    0:40 how does the Pantograph know to lower itself ahead of the low tunnel?

    • @Ep1o
      @Ep1o 4 роки тому +7

      at 0:20 you can see a blue sign that signals "prepare to lower pantograph" to the train driver, afterwards you see another blue sign with a horizontal rectangle that means "lower the pantograph". Plus I imagine the train driver has been on this route hundreds of times and knows when to lower it by heart.

  • @LovePakRail
    @LovePakRail 6 років тому +8

    Very nice
    Please attach your camera front on the train please

    • @DB7761
      @DB7761 6 років тому +1

      Lots of the videos in TC Rail's profile are made with camera, attached that way exactly!
      Check his profile out - videos are awesome!

    • @pooja3661
      @pooja3661 6 років тому

      tri maa ki chut ma land pakistani ki

  • @morthren
    @morthren 6 років тому +8

    Just great. I really like these videos.

  • @aaronkuruppassery3947
    @aaronkuruppassery3947 5 років тому +2

    Why was the pantograph lowered?

    • @PanosSkarp
      @PanosSkarp 5 років тому

      @@hwfq34fajw9foiffawdiufhuaiwfhw so what?
      We don't do that here. That's why I thought it was weird.
      And I've seen it at higher speeds but maybe more head room

    • @arfanvlk9351
      @arfanvlk9351 5 років тому +3

      @@PanosSkarp bridge was to low

  • @luckyduckydrivingschool3615
    @luckyduckydrivingschool3615 3 роки тому

    How often do they typically need to change out the insert on the pantograph?

  • @timhinchcliffe5372
    @timhinchcliffe5372 4 дні тому

    _I love the smell of burning copper in the morning._

  • @backbayproductions9508
    @backbayproductions9508 6 років тому +4

    This TGV or Amtrak?

    • @legass420
      @legass420 6 років тому +12

      Neither, looks like somewhere in Eastern Europe judging by the apartment blocks in the background.

    • @imehandzhiev
      @imehandzhiev 6 років тому +8

      It's Bulgaria (BDZ) :)

  • @BirdyBenJedi
    @BirdyBenJedi 6 років тому +4

    ..one of the hardest job on the train...has the panto.

  • @TheSearleFamily123
    @TheSearleFamily123 3 роки тому

    AC voltage or DC voltage used in this catenary?

  • @aegystierone8505
    @aegystierone8505 5 років тому

    I'm just curious, the electricity transmitted is AC right? So where's the neutral wire connected?

    • @kosskrit
      @kosskrit 4 роки тому +1

      It is connected to rails

    • @UltimateAlgorithm
      @UltimateAlgorithm 4 роки тому +1

      Can be AC or DC depending on the operator, some use AC others use DC. In both cases the running rails also act as the neutral wire. There are some exceptions, London Underground for example have dedicated neutral rails.

    • @blue9multimediagroup
      @blue9multimediagroup 4 роки тому

      You mean negative. And yes, that's the rails. They are the return to the system.

  • @entropy_of_principles
    @entropy_of_principles 4 роки тому +2

    train station Parvomayi, Balgarijia ? nice salutes from your neighbourhood Romania

    • @Petar_Nikolov
      @Petar_Nikolov 4 роки тому

      I believe it is Plovdiv train station, mate...

  • @vanisso
    @vanisso 6 років тому +3

    на колко време трябва да се сменя графита ?

  • @raviprakashsk2895
    @raviprakashsk2895 3 роки тому

    So satisfying to look at...

  • @amritpunj8290
    @amritpunj8290 6 років тому +8

    Just awesome, Thanks for sharing

  • @geoffreylee5199
    @geoffreylee5199 3 роки тому

    At beginning the arm drops from contact as the locomotive goes under bridges.

  • @TEM-sformers
    @TEM-sformers 6 років тому +1

    Zajebisty filmik widzę że macie tak samo jak w Czechach jazda na bok z opuszczeniem pantografu ile jechałeś coś koło 160??

  • @MohdHairien_9
    @MohdHairien_9 4 роки тому

    Panto down when hit neutral section area?

    • @e1woqf
      @e1woqf 4 роки тому

      Indeed. 0:35 - 0:50

    • @blue9multimediagroup
      @blue9multimediagroup 4 роки тому +1

      Low clearance.
      Nothing to do with neutral section.

  • @TheMicksterdee
    @TheMicksterdee 6 років тому +4

    I am intrigued as to why the pantograph went down at 0:35. Either a fault on the pantograph itself or the driver could cause that to happen.

    • @Marvstar1997
      @Marvstar1997 6 років тому +17

      The blue sign (inside the catenary) with the horizontal white bar on it signals the driver to lower the pantograph. The other one with the vertical white bar at 0:54 signals that the pantograph can be raised again. This is used e.g. when the train has to drive below an obstacle thats so low that the overhead wire would risk touching it (or to prevent the current to jump over the air into the obstacle, creating a ground fault), so the wire has to be lowered. To avoid a collision of the wire or the pantograph with the obstacle, the pantograph has to be lowered too, so that it can't push the wire or itself into the obstacle.
      You can see the lowered overhead wire under the bridge. If you compare the free space there with the height of the pantograph you can see that it would collide with the bottom of the bridge.

    • @Rarirama
      @Rarirama 6 років тому +2

      Does the engine receive power and work normally when it's lowered or the train just moves on inertia?

    • @Marvstar1997
      @Marvstar1997 6 років тому +6

      When the pantograph isn't connected to the overhead wire the engine doesn't receive power and the main switch will turn off. During this time the train moves on inertia. And yes, sometimes it happens that trains stop inside this zones and can't accelerate again. In this case they have to be pulled out by e.g. a diesel locomotive.

    • @Rarirama
      @Rarirama 6 років тому +2

      lol imagine what a pain must be to wait for a diesel locomotive to arrive there and rescue the train (unless it's just transporting cargo)
      Thanks for the explanation

    • @victor_sr5
      @victor_sr5 6 років тому +1

      Its not true. In locomotive have emergency keys for this zones. With them driver put the voltage in the catenary.

  • @OvercookedSteak
    @OvercookedSteak 4 роки тому

    what loco was this?

  • @Iconic_maya9
    @Iconic_maya9 3 місяці тому

    Actually feel like im on top gliding along

  • @atanaschankov
    @atanaschankov 3 роки тому

    Второто видео от кой град е ( с многото блокове от лявата страна)? От останалите разпознавам голяма част от гарите по линията Пловдив - Първомай.

    • @TC-Rail
      @TC-Rail  3 роки тому

      Стара Загора

  • @ИчоГ-н5ь
    @ИчоГ-н5ь 6 років тому +2

    Гара Пловдив???

    • @malin0338
      @malin0338 5 років тому +1

      И аз така мисля

  • @czosnektechnik
    @czosnektechnik 5 років тому

    What country is it?

  • @yeright4625
    @yeright4625 4 роки тому +3

    I'm surprised that when the driver lower the pantograph the train does not lose power

    • @ToMaX444
      @ToMaX444 4 роки тому +8

      at that point the train is just coasting, using its kinetic energy, it still has batteries, but there is no power to the traction engines

  • @thibaultconstant9271
    @thibaultconstant9271 5 років тому

    Which. country ?

  • @jamaaluddinas1jamaaluddina28
    @jamaaluddinas1jamaaluddina28 6 років тому

    FANTASTIC CAPCHER

  • @tracynation239
    @tracynation239 4 роки тому

    An arc-cellent video. ♡ T.E.N.

  • @AlexPayneKU
    @AlexPayneKU 4 роки тому

    Диву даюсь - как всё точно подвешено и установлено!

  • @ArunArun-fs5id
    @ArunArun-fs5id 4 роки тому

    Brother video lo unna engines start cheyadam Ela Telugu lo video cheyande brother electrical engine

  • @mdmushraffekhan1164
    @mdmushraffekhan1164 6 років тому

    Kon sa loc0 hai?

  • @gospodinBezkrai
    @gospodinBezkrai 5 років тому +5

    yeeee - plovdiv!

  • @vishalmasurkar8261
    @vishalmasurkar8261 3 роки тому

    This is wrong positioning ?

  • @sidx328
    @sidx328 4 роки тому

    Is this in Ukraine?

  • @arunnarang417
    @arunnarang417 3 роки тому

    Amazing

  • @ItsMyTime-z6p
    @ItsMyTime-z6p 6 років тому +3

    Wowwww amazing

  • @georgeisopescu7396
    @georgeisopescu7396 6 років тому

    Great video ;-)

  • @ЖивкоГеоргиев-ш2г
    @ЖивкоГеоргиев-ш2г 4 роки тому

    Разпознах гара Пловдив и гара Стара Загора за другите не знам.

    • @Stoyo_Dzhenkov
      @Stoyo_Dzhenkov 3 роки тому

      Тази червената в края е на Първомай 100%

  • @AguadillaCGN
    @AguadillaCGN 4 роки тому

    I can't read Russian letters, where is this?

    • @jimmy1395
      @jimmy1395 3 роки тому

      It's Bulgaria and those are not Russian letters, those are Cyrillic.

  • @subratabiswas7890
    @subratabiswas7890 6 років тому

    Nice nice one

  • @MIMarius77
    @MIMarius77 4 роки тому

    Wow 👏

  • @jenya1odin
    @jenya1odin 6 років тому +1

    Та не,это фейк,если б поезда так ездили,этот пантограф давно уже проводом бы распилило

  • @hpolig
    @hpolig 4 роки тому

    160km/h isn't high speed ;)

  • @differentthings3922
    @differentthings3922 6 років тому

    this is Indian railways or not

    • @angeldimchev291
      @angeldimchev291 5 років тому +3

      Not. Bulgarian railways, The engine is romanian made class 46

    • @blue9multimediagroup
      @blue9multimediagroup 4 роки тому

      No
      Bulgaria

    • @railfancroatia1141
      @railfancroatia1141 2 роки тому

      @@angeldimchev291 i'm pretty sure it's a Skoda. The 46 has a louder ventilation and in most cases different pantos