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Blog Entry# 1957107  
Posted: Aug 10 2016 (07:46)

15 Responses
Last Response: Aug 12 2016 (15:51)
★★★  Rail Fanning
Aug 10 2016 (07:46)   15656/Shri Mata Vaishno Devi Katra - Kamakhya Express | DBG/Darbhanga Junction (5 PFs) | NGC/WDM-3D/11483

वो सिर्फ स्टार नहीं है✋दुनियां है मेरी💙~   1963 blog posts   526 correct pred (63% accurate)
Entry# 1957107            Tags   Past Edits
SVDK-KYQ Express Arrived Darbhanga Junction Hauled By GD WDM3A + Dead NGC 3D !!
On Right Side SPJ WDP4D With Bihar Sampark Kranti SF Express Can Be Seen in the Pic !!
Clicked On :- 04.08.16
Note :- Mist Watch The Arrival Video 😊

10 posts - Wed Aug 10, 2016

10 posts are hidden.

Aug 10 2016 (23:59)
Obi Wan has taught you well~   3086 blog posts   1455 correct pred (72% accurate)
Re# 1957107-12            Tags   Past Edits
they were quite common in the years following their import in India. conventional don't have problems because unlike induction motors, DC motors actually have characteristics that match quite well to what you'd expect from a motor used in traction, besides being easy to control, unlike the notoriously difficult control of I.M.
you can go through this report, nicely explains the issues with 3 phasers in India w.r.t. over heating : click here

Aug 11 2016 (00:21)
Guest: 2a4ffe0e   show all posts
Re# 1957107-13            Tags   Past Edits
All these are draw backs of acquiring foreign made Locomotives which have been designed and built according to the condition over there. Why don't the RDSO and Indian Railways design and built Ingenious 3 phase electric locomotive? Aren't they capable of doing that!!!

Aug 11 2016 (00:24)
Indian Railways the life line of our Nation~   17536 blog posts   137 correct pred (83% accurate)
Re# 1957107-14            Tags   Past Edits
mujhe to yahi lagta hai

Aug 11 2016 (00:28)
Obi Wan has taught you well~   3086 blog posts   1455 correct pred (72% accurate)
Re# 1957107-15            Tags   Past Edits
the people who design are the same guys who graduated copying each other's assignments, so they continue the same tradition there :P
On a more serious note, we don't have the technical know how on that, for some reason. One of the most critical component, the electric drives involved in control of TM, are still imported (this is true in every field that uses drives, they are always imported, no local manufacturing)
there are other issues too, but i am not completely aware of this, but it boils down to this: we don't
have the requisite technical know how, for some reason.

Aug 12 2016 (15:51)
The train not taken~   2650 blog posts
Re# 1957107-17            Tags   Past Edits
More than that, this is a problem with collaboration between IR and the design companies. The original WAM1, WAG1 and IR's most successful loco, the ALCO WDM2 were all imported technologies. The WAM4 was very successful because of the ALCO tri-mount bogies. And IR developed these imported technologies later on.
A complete design from scratch takes a decade for a new traction technology, by which time it might even become irrelevant. It is a common practice to get the initial models from a company that is already well versed with said technology. Even the WAP5 was custom built for IR, with a separate European version also. In this way DLW has done an excellent job of collaboration,
as can be seen with the EMD's and the WDM3D.
CLW on the other hand had some lapses with the 3 phasers and also ignored the WAP4 even though it was completely their own design.

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