Pantograph arcing at 27000 V

RO: Atunci când între pantograf şi reteaua de înaltă tensiune nu mai există, din anumite motive, contact perfect (în acest caz ploaia înghețată) au loc astfel de fenomene.
EN: When there is no longer a perfect contact between the pantograph and the high-voltage line, for some reason (in this case the frozen rain), such phenomena occur.

[@breezetix]

no way in hell the lights were not flickering or dimming in the trains.

[@cortexedge]

Super. Cu cat e mai mare consumu pe motoare, cu atat sunt mai mari si arcurile.

[@c.f.f.onestiscutaru3330]

Acum 2 ani, era dimineata de ianuarie, am avut ocazia sa vad cea mai mare scanteie electrica la pantograful unui tren, curgeau alte scantei mai mici pe jos...

[@LDEGM]

Superb! Like & FAV!

[@TonyGFR29]

Vezi, ai grija, ti se poate defecta senzorul aparatului. Cunosc pe cineva care a patit-o. In orice caz, interesant ! N-am mai vazut fenomene din acestea de anul trecut.

[@kriszticfr]

Faine culorile :D

[@roby1880]

mai rar sa vedem o locomotiva cu ambele pantografe ridicate, Super filmul.

[@Dmitriy_Radist-Mashinist]

On our railway two pantograph is raised very often. If you want to come visit me at work. We go to my electric locomotive. I will raise two pantograph especially for you. I can ride you on my locomotive. :-) P.S. Sorry for my English.

[@edytzaboss]

but in your country every engineer has his own locomotive...its like truck drivers with their own truck..in our country we call that trucks tir

[@patsematary]

two pantograph are raised because of icy conditions: the first removes the majority of ice on the cable , the second find the best contact and best power absorption.

[@Isochest]

Was this in winter (ice on catenary)??

[@MrDanutzvd]

@ddeeddee333 unu' trage gheata si altul impinge gheata? sau firul.......sau trenul?....:X

[@Mutleytech]

Like mig welding. Sort of. Love it!

[@serviceattitude]

Brilliant

[@AndrewG1989]

Must be ice on the overhead wires that is causing the pantograph to arc.

[@JeanLucCoulon]

There are always arc, even in dry conditions. This is related to the dynamics of the systems. You have 2 oscillating systems: the catenary (contact wire) and the bow (contact strips of the pantograph), each of them having its own engen frequencies. The pantograph pushes on the contact wire, and this impulse causes oscillations. And sometimes, the pantograph is not quick enough. So the contact force is too low and there is some arcing.

[@topher1976au]

A lot of ice on overheads most likely.

[@TheDuke-vb9cq]

1500v DC pantograph arcing in wintery icy conditions - Quite normal.

[@ApolloWasReal]

The voltage looks considerably higher than 1.5 kV. According to WIkipedia, Romania uses 25 kV 50 Hz, which looks right for the size of the insulators.

[@InverhavonRailways]

Gare du Nord is 25kV, Gare du Lyon, 1.5kV dc. RER services switch voltage between the two.

[@CFRTrainSpotter]

@@InverhavonRailways this is not Gare du Nord in Paris, its in Bucharest

[@sirdual]

pure hot plasma :D

[@samschannel531]

Why such a high voltage? Here in Oregon the trains run on 2Kv DC. EDIT: It’s actually 750V DC.

[@ruawhitepaw]

Less line losses, which means you need less feed points.

[@EphemeralProductions]

Other countries use DC also. There's just some that use DC and others that use AC. Why they use one of the other I have no idea

[@NoZoDE]

Most countries use 15kv AC or 25kv AC. Some of them have sub system (I'm just goona call them that) that have lower voltages and sometimes DC

[@servtrans888]

Super delfinu' din minutul 1:08 cu ambele EP2-uri ridicate!

[@satyam1529]

It is very strange. Such thing doesn't happens in Indian locomotive running on 25KV. Is this because of moisture?

[@accatenary]

Satyanarayanmurti Katta It does happens in India but its for fraction of second and looks like camera flash at night. Its hardly noticeable during day. Reason for this is slightest of temporary slack between contact wire and pantograph which reaults into ionisation of air.

[@satyam1529]

Dushyant Jani thanx. I see this now a days daily in Mumbai local.

[@Ben31337l]

@@accatenary I thought it was ice / frost on the wire meaning that the electric needed to arc around the ice. I've never seen it arc on UK locomotives.

[@spv1093]

EDM, Electrical Discharge Machining at work

[@scdevon]

Approximately how many amps at 27,000 volts?

[@queenhyena84]

It depends on the power "consumption" of a locomotive. To put it as simple and basic as possible: Let's say we have two locomotives in front of us. Both would require a power of 5 100 kW from the supply. The difference between the locomotives is that one is designed for a 15 kV electrification system (like in Germany or Skandinavia) and the other is designed for a 25 kV system (as used in large parts of England and on the Balkan for example). To meet the required power supply the 15 kV locomotives takes 340 A from the catenary (340 A * 15 000 V = 5 100 000 W) whereas the 25 kV locomotive only takes 204 A to "get" the 5 100 kW. Of course we haven't watched at the internal structure of the locomotives. That is a whole topic on it's own. the examples are purely hypothetical however. Usually, you'll find information of the output power of a locomotive. What it requires as input depends on the efficiency of the loco. And regarding the resistance it's just as complex as the efficiency. Especially in AC systems inductivities and capacitors don't just work straight forward. You have to consider the reactive power -- the power that an electrical AC device requires establishing electrical or magnetical fields.

[@CFRTrainSpotter]

@@queenhyena84 i think the maximum amps before the main switch shuts down on these locomotives is around 1800 A, but even then, for a short amount of time...

[@EphemeralProductions]

I presume it was an icy day??

[@mikeyx87x]

Yes. Freezing rain all day.

[@djmixsound]

Trebuia sa faci si tu niste mititei :))

[@eklavya3160]

Is this normal?

[@mariuscfrbucuresti]

fain!:)

[@user-zc4db7cz7q]

ฝ่ายงาย.ช่างสำรวจ..

[@Dmitriy_Radist-Mashinist]

The reason for sparking: ice on the contact wire.

[@ThePaYseR]

Дмитрий РадистЖД Вредный You are correct, but It must not be only ice on contact wire, it can be also every dirty thing wich can lower the contact betwen pantograf and contact wire. So we can see in summer same thing etc. Sorry my english bad. All regards.

[@Dmitriy_Radist-Mashinist]

ThePaYseR Машинист поезда в большинстве случаев может исправить ошибку любого человека. Ошибку машиниста в большинстве случаев растаскивают восстановительным поездом. :-) :-) :-)

[@varinderldh6367]

Дмитрий РадистЖД Вредный it is a natural thing, no one can stop unless the new wire is implimented..

[@blue9multimediagroup]

@@varinderldh6367 New wire will freeze and this will repeat. You need an ice scraper to knock the ice off and bam, no arcs.

[@varinderldh6367]

@@blue9multimediagroup then also arc will be there ,one thing can do that wires need to heat to avoid arc.

[@cortexedge]

@TonyGFR29 Nu e bine nici sa te uiti la arcuri electrice neprotejat, fiindca emit UV clasa A si B.

[@roby1880]

un film de referinta, sunt putine ca asta pe net. La iarna sa mai "bagi"

[@lampardy888]

Location? Is it gare du nord, France?

[@victorsimion5887]

No Romania Bucharest

[@victorsimion5887]

I don't think France have trains like this

[@JohnDoe-nx9ne]

@@victorsimion5887 Au ei si mai rele, pe rute scurte. In rest material rulant performant

[@shiishinchiu6636]

is it not 25000v as a standard voltage in the world?

[@FrozenHaxor]

That is correct.

[@blue9multimediagroup]

It's not standard, but it is common.

[@JohnDoe-nx9ne]

Belgium have 13kv.

[@mhammed11]

se intempla asa la trolibuz

[@user-bt7zf8en5h]

国や地域によって日本のより､強力な交流電化@27KVなんですね｡

[@trainspottingfocsani150]

cine aduce micii? 😅

[@playerscobongameplay]

Eu

[@Aomicplane]

fix it

[@user-zc4db7cz7q]

สติถิ.ข้อมู.พลังงาน.กล...พลังงานจล..อานัตรสันยาน..เปิดไฟ..1ข้าง.การมองเหผ็น.หมายถึง.

[@ThePaulv12]

Must Lie Down ..

[@MrDanutzvd]

@djmixsound sau se poate asoma un porc :))))))))

[@JeanLucCoulon]

25 kV nominal voltage on AC lines.

[@marianl8718]

27 kV in Romania .

[@playerscobongameplay]

3kv in Italy and 25kv for high speed

[@JeanLucCoulon]

@@marianl8718 27 ? Sure ? I'm pretty sure it is 25 kV 50Hz. Do you have any source ?

[@JeanLucCoulon]

@@playerscobongameplay But it is 3 kV DC. In France, we have also 1500 V DC on some parts of the network.

[@playerscobongameplay]

@@JeanLucCoulon nice

[@greghawkins1025]

ZAPPITY SNAP CRACKLE POP BUZZY HUMMM BZZZZZZT SIZLE SIZLE SPARKLE PLENTY

[@AguadillaCGN]

gare du nord has 25kV, not 27

[@blue9multimediagroup]

This isn't France

[@lukaskapin5728]

staci. mi6 trochu štěstí a uvidíte ohňostroj z pantografu

[@sirindag2222]

Дождь.

[@HNN_CBEPXCNCTEM_CCCP_NM._COBbl]

Ага, ледяной! :)

[@cellogirl11rw55]

Are those supposed to arc?

[@Bandicoot803]

It can occasionally happen. But dragging St.Elmo's Fire along is all but normal. In general, the locos have huge capacitors which can greatly minimize the arcing even at high speed on long-distance journeys. I've often seen the french T.G.V. ( Train à Grande Vitèsse -> High-Speed Train ) passing at 200Km/h with its pantograph momentarily flash-lighting up its surroundings at night. Quite a spectacular show, I'd say!

[@blue9multimediagroup]

Ice on the overhead wire. Water is a conductor so as it melts from the electrical power, it creates a path for electricity which in turn creates the arc.

[@russouk]

Worn pads....cause that carbons worn out

[@blue9multimediagroup]

Nope Ice on the overhead. Electricity is jumping from the wire into the water on the head

[@francoiscowez5159]

la il IA du jus

[@sandrudaniel19]

Nu imi pare prea sigura treaba...nu e de mirare ca tot ard atatea locomotive...Acel arc electric va genera un foc pana la urma. pacat de locomotiva

[@andreiurs]

Daniel nu are absolut nimic. Nu e scurt circuit. Efectiv nu a contact complet, și atunci se formează arcul electric ca sa treacă curentul in continuare la locomotiva

[@ALEXJScher]

I don't speak that language