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Blog Posts by skjha033
Page#    47 Blog Entries  next>>
Travel Question
Nov 24 2016 (04:15)  

skjha033   74 blog posts
Entry# 2069450            Tags   Past Edits
When is #12471 #swarajexpress and #12445 #uttarsamparkkranti going to get eloco upto #svdk.

Nov 24 2016 (04:18)
Sunny   474 blog posts   36 correct pred (92% accurate)
Re# 2069450-1            Tags   Past Edits
Not in near future..four trains are big contender Malwa express, Swaraj, USK express, Sarvodaya express

Nov 28 2016 (02:43)
skjha033   74 blog posts
Re# 2069450-2            Tags   Past Edits
But till when can we expect these trains to get an eloco , as I am travelling to svdk in may next year , so by that time will I be able to see these trains hauled by an eloco ?
General Travel
Oct 22 2016 (23:13)  

skjha033   74 blog posts
Entry# 2033017            Tags   Past Edits
When are Uttar sampark kranti and Swaraj Express going to get eloco up to shri Mata vaishno Devi katra(svdk) ? as Jammu mail and shri shakti ac express have already got eloco up till svdk .
Travel Question
Jul 19 2016 (22:50)   SVDK/Shri Mata Vaishno Devi Katra (3 PFs)

skjha033   74 blog posts
Entry# 1934921            Tags   Past Edits
When is crs inspection scheduled for jat - svdk route #electrification?

Jul 19 2016 (22:51)
RSA of 22481 with Magadh is worst decision^~   80751 blog posts   5099 correct pred (78% accurate)
Re# 1934921-1            Tags   Past Edits
some work is pending so let work finish first
Travel Question
Apr 24 2016 (01:13)   12951/Mumbai Central - New Delhi Rajdhani Express

skjha033   74 blog posts
Entry# 1817342            Tags   Past Edits
Upto how much w/l is confirmed in 3AC of 12951 when 25 days is left for the journey.

Apr 24 2016 (13:09)
RosH*^   4523 blog posts   26856 correct pred (63% accurate)
Re# 1817342-1            Tags   Past Edits
60 will get in rac
Travel Question
Mar 16 2016 (11:55)  

skjha033   74 blog posts
Entry# 1768636            Tags   Past Edits
Any news by when pune-nzm ac express will start...
Travel Question
Mar 10 2016 (01:48)  

skjha033   74 blog posts
Entry# 1762307            Tags   Past Edits
What's the recent update on pune-daund #electrification & by when it will be completed

Mar 10 2016 (02:01)
Cheetah*^~   15904 blog posts   54753 correct pred (63% accurate)
Re# 1762307-1            Tags   Past Edits
Electrification is in its final stage.
Will be completed by May 2016..

Mar 14 2016 (21:56)
skjha033   74 blog posts
Re# 1762307-2            Tags   Past Edits
That means crs inspection by june-July 2016 and then trains with electric traction from august 2016.
★★  Info Update
Sep 19 2015 (19:27)   ALD/Allahabad Junction (10 PFs)

Saurabh*^~   8734 blog posts   3235 correct pred (73% accurate)
Entry# 1594652            Tags   Past Edits
TARGET SECTION RE/JBP 2015-16(Allahabad-Itarsi Electrification)
SN |Group |Section |Total RKM| RKM energized as on 31.03.2015(at 2.2 KV)| Target for 15-16RKM (at 2.2 KV) |Zone |State
1 |173A| Chheoki (excl)-Manikpur (incl)| 95 |81.5| 13.5|
2 |173B| Manikpur (excl)-Satna (incl) & Satna Rewa(incl) |127|93 |34| WCR| UP/MP
3 |174 |Satna (excl)-Katni-Jabalpur(excl)| 184.5 |115.5 |69| WCR| MP
4 |175 |Jabalpur (incl) – Itarsi (excl) |246.5|-|116.5| WCR |MP
Total 653 |290| 233

Sep 24 2015 (12:42)
skjha033   74 blog posts
Re# 1594652-1            Tags   Past Edits
Great so we can expect the work to be complete by end of 2017.

8 posts are hidden.
Info Update
Mar 13 2015 (11:10)  

skjha033   74 blog posts
Entry# 1395153            Tags   Past Edits
Pune Daund route #electrification not before August 2015 since Traction sub station work at Yevat and Daund still not complete and overhead cable laying work left at Loni and small stretch between Hadapsar and Ghorpadi yard.
★★★  General Travel
Dec 31 2014 (10:18)   HWH/Howrah Junction (23 PFs)

Guest: 73942978   show all posts
Entry# 1325381            Tags   Past Edits
IRI member Amit Jha and Harsh started the topic of Pantographs and discussion was ended with no conclusion. Here I took a step forward to answer the controversial question of Mystery of Pantographs.
I would request everyone to read the full article first then comment !!
-------------------------------------------------- -------------------------------------------------- --------------
Why does sometimes we see Front Pantograph used and sometime rear one
in Winter or any Season?
-------------------------------------------------- -------------------------------------------------- -----------------------
First of all we need to know few codes of conduct made by IR for AC Locos.
1)According to IR/Codesmanual/ACTraction-III/Chapter IV
Usage and authority over pantograph of various officials are issued under-
-------------------------------------------------- -------------------------------------------------- -----------------------
30604- Duties of LP- The Driver/motorman shall keep a special watch on the pantograph of his own train as well as passing electric trains and report any abnormality as soon as possible to TPC/TLC. If he notices any serious defect in the pantographs which are likely to cause damage to OHE, he shall stop the train forthwith and convey details to the TPC/TLC on duty.
*So,Clearly LP does''nt have any authority to select Pantograph on his own.
30627- Use of Pantographs-1. The rear pantograph of the loco (in the direction of motion) should normally be used by the Driver. The leading pantograph may be used only if the rear pantograph is defective or damaged or specially instructed.
2. Loco should not be worked with both the pantographs raised.
3. For normal lowering of pantographs the Master Controller should be switched off and the circuit breaker tripped before the panto-selector is moved to position "0. In an emergency when the locomotive is in motion, the pantograph may be lowered by using the panto-selector switch, even without tripping the circuit breaker but after bringing Master controller to '0' position.1. The rear pantograph of the loco (in the direction of motion) should normally be used by the Driver. The leading pantograph may be used only if the rear pantograph is defective or damaged or specially instructed.
2. Loco should not be worked with both the pantographs raised.
3. For normal lowering of pantographs the Master Controller should be switched off and the circuit breaker tripped before the panto-selector is moved to position "0. In an emergency when the locomotive is in motion, the pantograph may be lowered by using the panto-selector switch, even without tripping the circuit breaker but after bringing Master controller to '0' position.
-------------------------------------------------- -------------------------------------------------- -------------------------------------------------- ---------------------------------------------------------------------------
Secondly,we must know consequences of winter season in India Correctly.
1) fog is made up of condensed water droplets which are the result of the air being cooled to the point (actually, the dewpoint) where it can no longer hold all of the water vapor it contains.
2) During Winter days Atmospheric pressure increases and precipitation decreases condensation happens of water droplets along with other foreign gases which may form any kind of compound according to elements it has...which causes sticking of solid materials on CATENARY WIRE.
-------------------------------------------------- -------------------------------------------------- -------------------------------------------------- ----------------------------------------------------------------------------
Thirdly we should know a little bit about Pantographs.
As given in pictures...we can see 2 metal strips on pantograph head. Generally first strip is Brass plated which is used to push/pull the impurities offf the wire. Second one is the main strip which is carbon molded which is used to obtain power. Image of Indian Loco Class WAP 7
Ohkay Now we are good to go...!!!
-------------------------------------------------- -------------------------------------------------- -------------------------------------------------- ---------------------------------------------------------------------------
In Case of eLoco the DBR is overhead and under the Pantographs which is the most sensitive equipment which works as SMPS of inner machinery. In case of winters in India on sometimes we see Front Pantograph Up which is abnormal according to IR ACtraction Code. The reason behind may be simple as that..'
a) If LP observes any problem in the rear Panto then he can inform TLC/TPC who can direct LP to stop using Rear panto for a change.
b) More complex reason is in winters OHE wires can be impure on its metal in various parts because of the weather reasons described above. Now, In case of winters OHE can be impure so here is the mechanism of both pantos over wire - Front > (Pushes the impurity ahead proportionate to the speed of the loco less chances of debris on DBR), Rear < (Pulls impurity and which can cause fatal by pulling the debris inside DBR). So Front panto is used to keep the Loco safe during Winters.
Pantographs were first designed by Francis Galton to scale down atmospheric temperature and which concept was first used in Sweden for Rail. So basically Pantograph design is based on Sweden rail. ADD(Automated dropping device) was used in Sweden and other countries for dropping the Panto whenever problem arises automatically. Swiss rail also uses same technology but ABB couldn't provide that to IR in its latest loco batch because for Installing ADD copper strip is required not carbon but in the diverse atmospheric condition copper would get rusted in India so which means the problems of pantograph is not yet solved in IR.
-------------------------------------------------- -------------------------------------------------- -------------------------------------------------- ---------------------------------------------------------------------------
1) Why in dense fog trans achieve bullet speed in other countries but not in India?
First reason is ADD absence. In winters in India Visibility is very low in northern zones but that is the figurative reason for slow speed. Scientific and technical factor is the Brass moled strip is very deadly in case of interaction with foreign materials other than wire metal. Thats why you see little sparks during the run. Now, If high speed is maintained Brass strip can get in contact with foreign compound present on the wire due to atmospheric conditions which are described above and can generate 3000 degrees heat which can result in glueing of Panto and OHE wire and Pantograph will get broken and will result in fire and results may be catastrophic. Thats why trains are kept at 20-50 K's in Fog due to this reason also. This consequence is for effective if Front Panto is up because Brass strip faces front and which creates greater Force in comparison to Rear. Thats why we see some trains to achieve MPS in low visibility too.
++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++
2)Why Diesel locos face problems in IR during winters?
a) If diesel loco moving in Electrified zone- Simple, the section is full of eLoco trains and they are being slow due to reasons described above so to maintain run diesel loco trains also get delayed. For ex- If 12301 is going @20K's and a diesel train is behind which can go atleast at 60-70k's inspite of visibility then would IR allow that train to Overtake 12301. NO !!!Also the toxic gas which diesel Loco leaves also creats compounds on OHE wires.
b)If diesel loco is moving in fully non electrified zone such as NFR,NER,KR etc.- Visibility matters in that case !! Usually we see fully non electrified zones have Single BG or max Dual BG.In case of both the train running ahead is getting a little slow due to visibility but the cumulative effect lies on the train coming from behind because it can Overtake plus the train in behind also has visibility issue so this cumulative effect results in delay of diesel trains in India
++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++
3) Why we see front panto up in summer/autumn too ??
As I stated according to ACTraction III / CH IV if LP observes any kind of compromising thing in the pantograph of his loco or other then he should inform TLC who may suggest to change Panto later thats why this can happen in any season not only in winter.
++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++
4)Is there any directives of IR regulation to use Panto specifically in any zone and in any season??
NO. This choice solely happens during travel.LP doesnt have the authority or directives to change it. In case that he feels to get it changes...he have to discuss the matter with TLC and approval must be given by S.Engg/Sr.DEE whom may consider any theory which is not really known.
++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++
5)What in Case of DC traction?
Generally, WCaM locos have two Pantograph for AC and DC each. Usually in IR the question never arises because DC traction is only present in CR which is not prone to such winter as compared to NR/NCR. But still same procedures can be taken on Wcam Locos too.
++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++
6)Why this never arises in case of rainy season??
In rainy season Precipitation gets higher and Atmospheric Pressure gets lower which results in other gases to gain a height. So, lesser chances of impurity on OHE. Basic water is not having such weight which can effect DBR and also speed of Loco splits the water molecules in the air which results to just few sprinkles over DBR which is totally ineffective.
__________________________________________________ __________________________________________________ _________________________________________
This article is result of my research of various facts and history of Rail and applied sciences. I also interviewed few personals involved with ELS Engg. Dept.
This research may have faults and deviations !! All the learned friends of mine are welcome to discuss it further but I would request not throw comments without any valid reason or reasonable resonance. I also Conclude that..Usage of Pantograph is very controversial and vulnerable because no pattern of use is not yet observed. It will be the same untill and unless ADD is installed which is quite impossible with the use of Carbon strips.
Thankyou !!_/\_

32 posts are hidden.

Feb 24 2015 (21:28)
skjha033   74 blog posts
Re# 1325381-36            Tags   Past Edits
What is the logic for using Rear Pantograph regularly in all seasons,except winter seasons in Northern areas, I know u already stated it but why it is default,why not the Front Pantograph.

1 posts are hidden.

Feb 26 2015 (09:58)
Guest: 2a4ffc5e   show all posts
Re# 1325381-38            Tags   Past Edits
I have already stated the case law and scintific reason about it in the blog ! Please Read the blog fully first

2 posts are hidden.
Travel Question
Feb 23 2015 (22:05)  

skjha033   74 blog posts
Entry# 1377903            Tags   Past Edits
Is Ghaziabad Moradabad #electrification work complete

Feb 23 2015 (22:19)
Abhishek Jaiswal   45618 blog posts   18461 correct pred (69% accurate)
Re# 1377903-1            Tags   Past Edits

Feb 23 2015 (22:26)
skjha033   74 blog posts
Re# 1377903-2            Tags   Past Edits
How much work is left and by what time it is bound to complete

Feb 23 2015 (23:00)
Abhishek Jaiswal   45618 blog posts   18461 correct pred (69% accurate)
Re# 1377903-3            Tags   Past Edits
till Hapur-Dasna left. work going on at very slow pace... 1 yr more they will take to electric this route.

Feb 24 2015 (19:32)
skjha033   74 blog posts
Re# 1377903-4            Tags   Past Edits
From Ghaziabad side or Moradabad side work is left till Hapur

Feb 24 2015 (22:19)
Abhishek Jaiswal   45618 blog posts   18461 correct pred (69% accurate)
Re# 1377903-5            Tags   Past Edits
from gzb.
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