Bro , kyuki jab rain hoti h toh loco ke roof pe lage sare connection insulated hote , aur direct accidental earthing connection hota h , bychance agar barish k mausam me loco ki roof pe current leak hota h toh directly current earth me jata h , lekin loco ki chat pe arcing and explosion hote rahenge

EMF of the current affects the RF sets and GSM frequency of the drivers equipment.. hence to keep a healthy distance from that strong EMF field, the rear one is deployed instead of the pentograph overhead the driver

Thank you for making this video. I always like your every videos

vai , thank you... atleast 3 reasons jan ne ko mila

Your explaination is nice sir.

रेल की भाषा को वैज्ञानिक तरीके से समझाने और जानकारी देने के लिए हम आपका धन्यवाद करते है । मेरा एक सवाल है 24 डिब्बे वाली रेल में अगर आधे डिब्बे वातानुकूलित और आधे साधारण है तो क्या रेल को खिंचते समय लोकोमोटिव को अधिक ऊर्जा आवश्यकता होगी ?

Aapka sara video useful hota hai

Sir good information about rear pantograph sir.

Bhai ek nmbrr!! Good info!! subscribed.

In high rise OHE section front Panto is used because it is observed with aerodynamic forces rear Panto causes sparking, i saw this in other youtuber's video.

The video and the reason behind this was both awesome

Please make video on full training of locomotives of alco and emd electric and diesel locomotives in only your language please 🙏🙏

The friction on pantos are quite low as they are made of graphite. Graphite is an excellent conductor and also a solid lubricant (Due to way graphite forms bonds in its lattice). The most likely reason is that when a rear panto is raised, it DRAGS (Rather than dig) the OHE and thereby the wear on the panto slider is lower. This is mostly done during summer and dry seasons. When its wet, the thin water layer on the wire can act as a barrier for higher current causing surges in the power leading to component stresses. To prevent this, the forward panto will be used as this causes the panto to DIG into the wire and make harder contact (Imagine dragging a stick in sand to pushing it from the back - the latter will cause the stick to dig into the sand). For a loco thats capable of pulling 7000 ton loads, the friction on the panto is way too miniscule - infact its not even measurable.

I didn't know that. Thank you

भाई आप जैसी जानकारी कोई नही देता है आप बहुत बढ़िया वीडियो बनाते हो

Tell me one thing...whatever the panto is used...is tht collected power given to all axle or only respective wheel set below tht bogie?...rply plz

One more point... During night, sparks can be easily seen by placing mirror behind rear pentograph

Frost can Jam the pantograph Well yes it will melt but a split second jam can lead to damage in pantograph anytime

Thanks very nice and informative.

Sir aapka information 100% right hai Mujhe railway ki knowledge 70% se Jati Hai

Thanks for information sir 👍👍

wah bahut acchi jaankari di aapne is video mai

sir aapki saari railway ke videos mujhe acche lagte hai aur information bhi,lekin mujhe railway ka only 30% knowledge hai.........The rail fan.

Thanks bhai...for get knowledge

very nice sir choti choti pr upogai jankari dete hai aap

Bhai aap video ki editing bahut achhe se karte ho isiliye sab cleyar smajh me ata he

The temperature of frost is much lower than the temperature of a water droplets so the intermolecular velocity of molecules is relatively zero in frost so they easily settle down at a place where it attaches. But in tge case of rain droplets the relative velocity is greater so they doesn't settles down...

Very good explanation...

Me aapse ek baat karna chahata hu ki aapko itne logo ne dislike kyu kiya lekin mujhe to aapka video bahut acha laga me to ise like jarur karunga

Nice explaination. Thanks sir

2:14 - a part from the main railway train station in Sofia, Bulgaria

Sir agar engine chalte samaye hii pantograph ko niche karde to... Train kuch time tak chalsakta hai ki nahi

The big zigzag porcelain wire holder doesn't make a continuous thread of water droplet to the roof of the loco. When water droplet comes to the sharp edge of the wire holder, it is thrown out by the air passing beside it. Thus earthing is prohibited. And the components are covered with corrosion resistant material helps to minimise the decay.

Nice information.

1. LOCOMOTIVES ka roof hamesha insulated material se Banta hai 2. Locomotive ke roof Assembly se pahle sabhi component ka Rain water testing ki jati hai jisse Pani andar na ja sake Aur roof mounted grid hai jo barish Mai Sara Pani bhap Bana kar USA deta hai

My quation is this can we use both pentograph at the time..if use then what happened.with locomotive

वीडियो अच्छा है लेकिन फ्रंट पेंटो ग्राफ पर भी एक वीडियो बनाइये।

Requesting a video on 2x25K Volts AC supply which uses long reach pantograph.

sir aapne kon kon si engine model drive kiye ho...pls video bnaaye....cheers

Train jab track badalti ha to kya wires jo uper hote ha vo bhi lote ha

Nice video good job brother

Front panto is used to increase friction and to avoid flashing when it's raining or in the case of dew.

Gud thank u ab smjha

Sayed app ka version galat hae. Electicity ka ek di electric value hota hai.agar uske adik ho to insulation break hota hai. Safety ke karan peche ka pantograph use hota hai. Current sab se kam raste se ground ko jati hai. Probility of ceramic insulation break lako me ek hota hai.mene ek bar tram driver ke ser ke bal pe aag lagte dekha tha. This follows the same principle of a lighting strike.

During Winters, OHE PR JMA hue Frost ko front side PR girne ke liye Front Pantograph ka use kiya jata h...AGR usstime rear pantograph ka use krenge to circuit breaker ke damage hone ke chances bdhjate h...

Good work sir

u r great sir jee

Awesome thanks

Nice video sir Aap bahut aage tak jaoge

Nice video ## subfacts abhinav

Sir makes a video on railway signal

Bhai maine highspeed trains ke front pantograph ko use hote dekha haii jaise ki WAP 5 WAP 7

Sir high tension equipments hamesha leading pantograph ke niche hote ya rear pantograph ke niche bhi hote h?

Temperature play imp role in rainy and winter, barish main temp thand jada hota hai aur to pani baha jatha hai aur electrical parts damage nahi bolthe hai aur thand main ice form hota hai to demage ka chance jada hota hai sirji

Frost settles down on disc insultion along with with dust that may result into insulator failure where as rain water cleans the insulator so no leakage current path . Hence insulator remains safe.

Is there a way to enable English captions for your videos? Thank you.

Very nice channel

Zabardsstt bhai

Nice information

Dear Friend, could you tell us the difference between 'Red Coloured Coaches', once used by the Indian Railways and now 'Blue Coloured Coaches'.

Sir, pentagraph ki upar ki Patti Jo line ko ghiste hue jati hai, wo kounse dhatu se bani hoti hai, aur use kitne dino baad ya kitne km train ke chalne ke baad badli kiya jata hai?

Good evening sir...ek train ko passing krne k liye use kitni der phle route clear chahiye hota h. Kyonki meri train dusri train ko 20 min. Baad crossing diya...jabki meri train itne time m dusre station pr ja sakti thi....

Sir ek question h.. 12497/12498 shane punjab express m EOG ku use kita jata h .. jbki usme to 3 ya 4 hi Ac coach h ..?? Baaki dusri train m b 3/4 ac coach hote h ..unme to EOG nhi hota 🙋🏻‍♂️🤷🏻‍♂️

very good brother

Nice brother

Good.

mast Bhai

Sir ek question h pantograph jis cable ko touch kr k chalta h uske itane bar ghisne se ya continue ragadne se kabhi pento kharab kyu nhi hota ya hota bhi h kya¿???????????????????

logic behind ur question might be this: During winter, water form to ice and sp it remain there and thus rusting come...but in rainy season....while traveling..water dont stay long due to strong air....*

Wow.....

barish me electric locomotive ke equipements ke kharab na hone ka ek hi karan ho sakta hai unpar insulating coating ki jaati hai or electric insulators hote hai roof panel me

achchi video hai sir

आजकल सर्दियों में भी रेयर पैंटोग्राफ अधिक उपयोग किया जा रहा है।। बारिश में पानी हर जगह बराबर गिरता है और सूख भी जाता है जबकि सर्दियों में ओस की बूंदें इंजन के ऊपर किसी एक स्थान विशेष (जैसे डी.बी.आर) पर ही इकट्ठी हो जाती होंगी इसिलए शायद सामने वाले को उठा लिया जाता होगा।।

ek toy train per bhi video banao kyuki vo bhi important hai.

Nice vedio

Nice video sir

Winter season me Kota division me front panto use Kiya Jata hai . Front panto use karane se mist /dew servomotor par nahin garati . Cold dew girane se servomotor JAM ho jati hai . Yadi loco pilot ne kisi Karan panto lower kar diya tab raise hone me difficulty Hoti hai .

CAN YOU EXPLAIN WHY VACUUM CIRCUIT BREAKER IS USED IN ELECTRIC LOCOMOTIVE WITH VIDEO

Superb

Excellent

Bhai ise gatimaan and shatabdi express me kyo nahi kiya gaya ..??? isse uski speed increase ho sakti hai ... ~Prajwal Soni

Bahut badiya

Nice video

Sir ager baarish resion hai toh e m u mai three pentograph use hote hai

Sir pantograph jisse touch hota hai woh wire me current hai toh baarish me bheegne se kyu nahi kuch hota plz bataiye

I've a question. If the reasons mentioned in the video are to go by, then how come EMUs always run with their front pantos up? Given the number of frequent trips EMUs have to go for every day, they should have their pantos pointed to the rear direction, because they have the biggest possibility to face the danger conditions mentioned in the video here. Then why do they have front-facing pantos? Can somebody explain?

Contenar le jane wale enjan ka paintograf jyada ucha uthta hai kya sawari gadi ke apeksha

Dear amit thanks for the info but i feel there needs to be correction in physics explained by you that pushing requires more force than pull. But that is incorrect. If the line of action of force remains the same the force required is equal in both cases. Wanted to remind you the free body diagram theory. Thanks

Please make video of bhubanswar rajdhani

sir i think ice me solid form me hota hai but raindrop hamesha free shape hote hai because of dust particles are there yehi reason hoga sir

Sir locomotives me jo indicator use hota hai wo kis liye video banaiye uspe

East coast railway zone me Puri railway station k upar 1 video chahiye

Thanks sir

Aap toh kamalke ho

Locomotive ke dono panto se ek sath supply li ja skti h ???

Sir kya ap bta skte ho jo pantograph hota h wire se hmesa touch rhata h pr fir b wh ghista nhi Aisa kyu. Kyu.... pls btao ap

Lekin sir winter me aksar locomotive me driver cabin k front pantograph Ka hi use Kia jata hai

Thandi ke mausam mein hum pehle sunte the ki train 7 ya usse jyada ghante late h lekin aaj kal hum nahi sunte

achchi video

Barish me sirf paani ka improvement hota....usse panotograph or cable me koi issue nahi aata...but..moisture...ya..ose...ki...wajah..se...usko...25.000kv...lene me problem ati h......👍