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Page#    1315 FAQs  next>>
Jan 20 (2:59PM)

Coach Construction/Seating Arrangements

Entry# 1822     
SOLO BACKPACKER**  
What is a Turncoat Coach?

4143 views
Jan 20 (7:14AM)
Blog Post# 1342359-10     
IR QUIZ MASTER     Added by: SOLO BACKPACKER**    Jan 20 (2:59PM)
What's turncoat coach?

3938 views
Jan 20 (2:57PM)
Blog Post# 1342359-13     
rdb**     Added by: SOLO BACKPACKER**    Jan 20 (2:59PM)
AC-1 coach converted to AC-2 by installing Side L & U berths, with the partitions maintained...:-P
Jan 17 (5:48PM)

General

Entry# 1821     
rdb**  
Longest Platform Platforms in India

Rail News
0 Followers
5443 views
Jan 17 (5:45PM)
Blog Post# 1342975-0     
rdb**     Added by: rdb**    Jan 17 (5:51PM)
Jan 07 (12:07AM)

Ticket Booking/E-Ticketing

Entry# 1820     
Jay Shah**  
Mobile Ticketing System in Mumbai Suburban

8050 views
Jan 07 (12:04AM)
Blog Post# 1322041-2     
Jay Shah**     Added by: Jay Shah**    Jan 07 (12:07AM)
On 27th Dec System was introduced. Facility available at Dadar (Central) and Dadar (Western)
On 1st Jan Facility extended to Vashi on Harbour line, Thane, Kalyan and Mumbai CST on the Central Main line and Borivali, Andheri, Mumbai Central and Churchgate on the Western line.
On 6th Jan Facility extended to Kurla, Ghatkopar, Dombivli, Mulund, Masjid, Vikhroli, Ambernath on the Central Main line, Airoli on Trans-Harbour line, Belapur, Panvel,on the Harbour line and Vasai Road, Virar, Nallasopara, Malad and Kandivali on the Western line.
Jan 01 2015 (10:34AM)

General

Entry# 1818     
SOLO BACKPACKER**  
A Comprehensive Manual on Railway Signalling

★★★  Rail Fanning
4 Followers
11207 views
Dec 31 2014 (10:30AM)
Blog Post# 1325397-0     
Begins Falls Rises ™**     Added by: SOLO BACKPACKER**    Jan 01 2015 (10:34AM)
A PDF of BASIC Signalling, Shunting, Cross OVers etc
A 181 page in total for Railfans.
Special thanx to Khalid Kagzi for sharing it.
Jul 28 2011 (12:11AM)

General

Entry# 171     
Kishor CBE chain 1Σ17262 19275 14795 19330**  
What is the meaning of PANTO ACTION??

★★★  General Travel
7 Followers
12859 views
Dec 31 2014 (10:18AM)
Blog Post# 1325381-0     
ArchieER     Added by: shiva1992**    Dec 31 2014 (10:23AM)
6845844625bac844c8a3.jpg
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?
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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
...
Read more...
and authority over pantograph of various officials are issued under-
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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.
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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.
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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...!!!
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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.
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FAQ-
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 !!_/\_

10764 views
Apr 04 2010 (12:17PM)
Blog Post# 28620-1     
Kapadia      Added by: moderator**    Jul 28 2011 (4:44AM)

The dead zone is an electrically neutral area at Km 63 on the WR out of Mumbai. This zone allows the dual voltage locos of the WR to change the working voltage while on the run.
***This is what is called Panto Action.

10884 views
Apr 04 2010 (12:23PM)
Blog Post# 28620-2     
Guest: 7fc6bcb1   Added by: moderator**    Jul 27 2011 (7:02AM)
Did you know how Pentpgraph works ?

10880 views
Apr 04 2010 (12:27PM)
Blog Post# 28620-3     
krish_railz_addicted     Added by: moderator**    Jul 27 2011 (7:02AM)
plz tell WAP locos can be used in neutral zone?

10881 views
Apr 04 2010 (12:33PM)
Blog Post# 28620-4     
Guest: 7fc6bcb1   Added by: moderator**    Jul 27 2011 (7:02AM)
I think Mr. Kapadia is searching our ansewrs in books.
What u say Krish ?

10880 views
Apr 04 2010 (12:35PM)
Blog Post# 28620-5     
krish_railz_addicted     Added by: moderator**    Jul 27 2011 (7:02AM)
haha lolz but mr.kapadia did explained in a gud way i appreciate.and i hope he will continue in the same way.

10882 views
Apr 04 2010 (12:36PM)
Blog Post# 28620-6     
Guest: 7fc6bcb1   Added by: moderator**    Jul 27 2011 (7:02AM)
He is just cut paste from books. Can he has experience for bookings ?

10879 views
Apr 04 2010 (12:38PM)
Blog Post# 28620-7     
krish_railz_addicted     Added by: moderator**    Jul 27 2011 (7:02AM)
no issues i only kno "NO ONE IS PERFECT"

10880 views
Apr 04 2010 (12:44PM)
Blog Post# 28620-8     
Guest: 7fc6bcb1   Added by: moderator**    Jul 27 2011 (7:02AM)
Agree with you but he is trying to increase his post over then other.

10885 views
Apr 04 2010 (1:27PM)
Blog Post# 28620-9     
Murli*     Added by: moderator**    Jul 27 2011 (7:02AM)
Pnnto Action: Relates to Pantograph: that is the four armed or diamond armed levers with a flat aluminium-copper bed which touches the Overhead Wires (current lines) OHEs and collects current. This is drawn down to the transformers insider the electric locomotives and stepped down to operational voltage using thyristors (voltage converters), and then used to drive the electric motors. Panto Action means that.
It also means that when the train is approaching a section on the railway tracks where two feeders of electricity are being used, in order to prevent 'electrical collision", the panto is lowered - known as neutral section - till the engine crosses the 'neutral section - and then raises the pantograph to regain contact with the new feeder and start normal operations of drawing current and raising speeds..
...
Read more...
The LPs and ALPs know the neutral sections in their working time table. If you want to see it yourself, you will find signboards mounted on the left hand side on a straight line showing a white board with signs 250 m, then 150 m, then 50 m, and then a sign which shows a perpendicular line, with an underline and again a perpendicular line Below THE UNDERLINE.. telling the LP lower pantograph.. After passing the neutral (sometimes called dead section in Railway terms), you will find three vertical lines aligned in same line on a white board again, telling the LP raise pantograph.
This also happens in sections where DC lines and AC lines converge.. Seen very normally in Mumbai area - this area is now under conversion to full AC and DC is being replaced.
Good wishes.

10877 views
Apr 04 2010 (1:31PM)
Blog Post# 28620-10     
जितेश शुभ यात्रा*^     Added by: moderator**    Jul 27 2011 (7:02AM)
Amazing info Sir

10884 views
Apr 04 2010 (1:55PM)
Blog Post# 28620-11     
Murli*     Added by: moderator**    Jul 27 2011 (7:02AM)
Yes, WAP locos also have to pass thru neutral zone even in their own AC territory! Good wishes.. .. it appears you have far more knowledge than you are telling sir !
Dec 16 2014 (10:05AM)

Ticket Reservation Quotas

Entry# 1816     
Amjad Ali Khan*^  
Does Lower Berth Quota Tictket Released Immediately after Cancellation ?

★  Travel Question
0 Followers
15476 views
Dec 16 2014 (9:37AM)
Blog Post# 1309384-0     
Biplab Nayak**     Added by: Amjad Ali Khan*^    Dec 16 2014 (10:05AM)
Cancelled a LB quota seat for friday and it got added to AVBL quota for LB.
It was AVBL 11 before and after cancellation it became AVBL 12.
I thought LB quota doesn't get released immediately and gets allotted during charting only ??

13258 views
Dec 21 2014 (7:19PM)
Blog Post# 1309384-4     
विश्व नाथ**     Added by: विश्व नाथ**    Dec 21 2014 (7:21PM)
Partly correct,
When entire quota exhausts all cancellations hide in to system and eligible PNR gets at the time of charting only.
Dec 07 2014 (8:57PM)

General

Entry# 1815     
Ahmadabad Darbhanga Jansadharan Express**  
Helpline numbers of Southern Railways

★★★  General Travel
2 Followers
18045 views
Nov 23 2014 (6:43PM)
Blog Post# 1284919-0     
First class     Added by: Ahmadabad Darbhanga Jansadharan Express**    Dec 07 2014 (8:57PM)
screenshot20141123182107.jpgAdvisable to save on your phone..
Aug 05 2011 (2:44PM)

Locomotives

Entry# 501     
goyalwc**  
Why do locos sometimes use the rear pantograph and sometimes the front pantograph? What is criteria for making this choice?

★  
Dec 07 2014 (7:46AM)
Blog Post# 1299136-1     
AKGarg**     Added by: SOLO BACKPACKER**    Dec 07 2014 (9:51AM)
During winters, frost is a major problem. When the front panto is raised, it looks like this.. ">".. Now, any frost on the wires will be brushed aside by the panto in the forward direction, and the frost drops/particles will land outside the loco. However, if the rear panto is raised, it looks like "<", and here the frost particles will get deposited on the roof of the loco, which contains DBR and other valuable equipment. There is a risk of them getting damaged due to the frost deposited by the brushing action of the rear panto. For this reason, front panto is used in winter. However, this by no means is a convincing explanation, and it cannot explain why front panto is not used in rainy season. This is a subject of intense debate, and we have not found any satisfactory explanation from even 2-3 loco pilots, with whom...
Read more...
we have spoken. In fact, one may spot electric locos with rear pantos also in winter, though that's quite rare.

0 Followers
17678 views
Aug 05 2011 (2:36PM)
Blog Post# 215482-0     
SMJ**     Added by: goyalwc**    Aug 05 2011 (2:44PM)
Q. Why do locos sometimes use the rear pantograph and sometimes the front pantograph?
There is in principle no difference between using the front and the rear pantographs for most locos as each is fully capable of delivering the required electric current from the catenary to the loco. (The AC-DC locos are special in that each loco is intended for a different traction supply.) Generally on IR there is no need for both pantographs to be raised at once since there are usually no unusual situations such as frost on the catenary or increased current collection requirements seen with other countries' railways.
Yet, it is often seen that there are some definite patterns in pantograph usage. It has been the practice in many areas for locos to always have their rear pantographs
...
Read more...
up. It is thought that this practice arises from the idea that entanglement of the catenary by the front pantograph may result in damage to the rear pantograph as well as the debris or broken equipment lands on it, and using the rear pantograph lessens the chance of this. However, in recent years, this does not seem to have been adhered to very much. Another pattern that has been seen, especially in northern India, is for the front pantograph to be used extensively in the winter, but not in the warmer months. As a variation of this, it is also known that in certain divisions or zones, orders have been issued for drivers to use the rear pantographs at night. While the reasons for these usage patterns are not entirely clear, it is thought that there is a concern about condensation and the accumulation of dew on the catenary. An adequate technical explanation for the pantograph usage pattern is not known at this time [1/07]. (Please note - theories about falling water from dew on the catenary causing short circuits in loco equipment are implausible considering that locos operate just fine in heavy rain.) It has been suggested that front pantograph use may be a historical vestige from British practice carried over from conditions in the UK where sometimes the front pantograph was raised to scrape ice from the catenary and allow the rear pantograph to collect current fully, but this has not been substantiated either.
May 05 2012 (12:54PM)

Ticket Booking/E-Ticketing

Entry# 1144     
12301 KOLKATA RAJDHANI 12302*^  
What does RT CLS Suspended means?

Nov 30 2014 (1:43PM)
Blog Post# 1291834-5     
SOLO BACKPACKER**     Added by: SOLO BACKPACKER**    Nov 30 2014 (1:43PM)
No more bookings permitted. Reservation has reached maximum.

26321 views
Jul 19 2013 (10:36AM)
Blog Post# 810356-4     
Guest: 7db89ede   Added by: SOLO BACKPACKER**    Jul 19 2013 (10:39AM)
it is incorrect.
RT CLS SUSPENDED has nothing to do with waiting lists or bookings. it is generally a temporary restriction on bookings for the said train on that particular day in the said class.

34545 views
May 05 2012 (12:50PM)
Blog Post# 416833-1     
Jayashree ❖ Amita**     Added by: 12301 KOLKATA RAJDHANI 12302*^    May 05 2012 (12:54PM)
RT CLS SUSPNDED
This appears -- when the waiting list for any class had reached the maximum limit fixed and no further wait listed tickets can be issued.
................................................
It means on the particular date for which you are checking the availability of the route and class -- the booking is suspended.
Aug 19 2011 (12:53PM)

General

Entry# 635     
Kishor CBE chain 1Σ17262 19275 14795 19330**  
While booking an AC First Class (1AC) ticket for two people, is it possible to specify a preference for 2-person Coupe?

37595 views
Feb 05 2013 (10:07PM)
Blog Post# 661812-3     
DB**     Added by: Nazeer*^    Mar 14 2013 (5:49PM)
1) Go to PRS and request clerk to feed "CP" option.
2) After the ticket is booked, approach CRS/DRM/CCM with an application for allotment of cabin/coupe/lower berth at the time of chart preparation.
Latter would carry more weightage and preference over the former.

31662 views
Apr 03 2012 (12:35AM)
Blog Post# 387127-1     
bhanu teja భాను తేజ     Added by: rfZ**    Nov 26 2014 (3:02PM)
Inform the Ticket supervisor that this is a gift and ask for a 2 berth coupe.
still you will get after chart preparation.

50951 views
Aug 09 2011 (12:38PM)
Blog Post# 217129-4     
SK Jain     Added by: Nazeer*^    Aug 22 2011 (11:01AM)
In 1st AC (and 1st class), the berths / seats are allotted only on charting.
Being the highest class, it is VIP prone and they are given the maximum comfort.
After the VIP absorption, it comes to the general passengers and if available, a coupe of 2 may be given to a PNR of 2.
Yet, suppose, on a day in a train, after VIO allotment, remaining there are a coupe of 2 and a coupe of 4 for 6 un-allotted (so far) passengers who have 3 PNRs of 2 each. The charting clerk can now give a coupe of 2 to only one PNR and rest 2 PNRs (of 2 each) will have to be accommodated in the coupe of
...
Read more...
4.
This way, there may be a chance that a PNR of 4 passengers is bifurcated into 2 or more Coupes.
Ladies traveling alone are also given preference to be either in a coupe of 2 with other single lady or to be there in a coupe of 4.
Wish you all the best for allotment of a coupe for 2.

49703 views
Aug 16 2011 (9:49PM)
Blog Post# 217129-8     
विश्व नाथ**     Added by: Nazeer*^    Aug 22 2011 (11:02AM)
Re# 217129
If the passenger passenger gives verbal or written request (on the same reservation form) for allotment of Coupe than the booking clerk selects 'CP' option in PRS system to consider this request as first preference.
In case of any VIP/HO movement their PNR gets priority over any CP request made by any GN quota passenger.
At the time of charting such VIP PNR are manually entered in to PRSystem for priority allotment of coupe.

39834 views
Aug 22 2011 (10:59AM)
Blog Post# 217129-20     
Nazeer*^     Added by: Nazeer*^    Aug 22 2011 (11:04AM)
Normally, a coupe(2 seater) will be allotted for a two persons PNR and a cabin (4 seater) for 4 person PNR at the time of charting. But It will be based on the priority of booking and availability .
Page#    1315 FAQs  next>>

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