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Blog Entry# 1600122
Posted: Sep 25 2015 (23:56)

14 Responses
Last Response: Oct 15 2015 (00:47)
2 Followers
Travel Question
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11

Sep 25 2015 (23:56)   12006/Kalka - New Delhi Shatabdi Express | NDLS/New Delhi (16 PFs) | GZB/WAP-7/30277
 
guest   6387 blog posts
Entry# 1600122            Tags   Past Edits
#railwayengineering
#MisuseofHOGWAP-7
Kalka Shatabdi Express at NDLS with GZB WAP-7(HOG) 30277.
Link: click here
Main Page Link: click here
Pic
...
more...
Courtesy: Ashwin WAP5
Now the Concern is though Kalka Shatabdi has HOG WAP-7 as it's "Permanent Link", still "EOG/Generator Car" used in this Train. Not ONLY this Train we have seen many AC Trains hauled by HOG(Head On Generation) WAP-7 still using "EOG/Generator Car". As per CLW "HOG WAP-7" is used to "Supply Power To the Train which is the Function of EOG". Now if EOGs are used in AC Trains in spite of hauling the Train by HOG WAP-7 Loco then what is the utility of HOG WAP-7?
Recently One Brand New HOG WAP-7 has been allotted and sent to RPM Shed of SR.(RPM WAP-7 30426)
IR and CLW should seriously think about this Issue. If they use HOG WAP-7 then EOGs should NOT be used as the Function of EOGs are performed by the Loco.
Otherwise STOP producing HOG WAP-7. Running AC Trains with EOGs as usual. But don't "Misuse" the HOG Loco by using EOG in the Trains hauled by HOG WAP-7.
I don't think "HOG" System of WAP-7 30277 is used in case of 12005/12006 or the HOG System of WAP-7 30277 is NOT working properly. If used or working Properly then EOGs won't be used in 12005/12006.
After all HOG Loco is meant for avoiding EOGs in Full AC Trains which result in reduction in Pollution by Diesel EOG and Save Fuel Cost.

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1

Sep 30 2015 (14:47)
DQisthebest
DQisthebest   788 blog posts
Re# 1600122-10              
I want to know just for my information - How is that Gujarat Mail runs with 12 AC Coaches and no EOG and some trains like 12206 Nandadevi AC Express (10 coaches) 12847 Howrah - Digha AC Duronto ( 9 coaches) require EOG. Here I have compared only ICF trains.
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Sep 30 2015 (18:03)
TheMadrasMail~
TheMadrasMail~   6349 blog posts
Re# 1600122-11              
Few things to know here. ICF coaches are mainly of 2 types. Self-Generating and Non Self-generating.
1. All the normal blue ICF rakes used on normal SF/express/passenger trains ( except some exceptions) are self-generating. They don't need EOGs and each generates it's own power ( A big boon for IR in terms of handling rakes and enabling slip trains). However, one main disadvantage of these coaches, apart from less efficiency and higher maintenance requirements, is that the MPS is restricted. These rakes cannot handle higher speeds as the oscillations can damage the connection between the wheels and the alternator that generates the power.
2.
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more...
To tackle the above disadvantage, when RAJ and Shatabdi class of trains were started, IR removed the self-generating equipment from the normal ICF coaches and provided them with EOG cars instead. Now the rakes could travel faster. Usually these rakes are rated for 130kmph service, but with appropriate operational clearance there have been instances where these rakes hit 150 Kmph during regular operations. When the Duronto concept was started, ICF built a few non self-generating rakes with duronto livery to be used on these trains.
Coming to your question, the Gujarat mail uses normal ICF Self-generating coaches and thus does not need EOG cars. From what I see in the gallery for Nanda Devi express, it seems to be using an old Rajdhani rake, which as I explained above, needs an EOG car. Similarly, the Howrah-Digha AC Duronto also has an ICF duronto rake which will also need an EOG.

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1

Oct 15 2015 (00:21)
TheMadrasMail~
TheMadrasMail~   6349 blog posts
Re# 1600122-12              
Here is the confirmation that Kalka Shatabdi runs with HOG and not EOG ( or at least, has run on several occasions). This is the annual report from RDSO, and in the first column regarding development of HOG modules for locomotives, it has been mentioned that commercial use of HOG WAP7 had started with Kalka Shatabdi. It is also mentioned here that 2 EOG cars have been modified and that the Loco's HOG module is connected to the feeder cables on the modified power cars.
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Oct 15 2015 (00:23)
guest   6387 blog posts
Re# 1600122-13               Past Edits
Link Please......(For the Info of Re# 1600122-12 )
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2

Oct 15 2015 (00:47)
TheMadrasMail~
TheMadrasMail~   6349 blog posts
Re# 1600122-14              
Oops! Missed it! Thanks for pointing out!
click here
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