The Roof Mounted Naturally Cooled DBR fitted
on the roof of the Loco of WAP-4 type Electric
Locomotive in required to control a train of 1432
tonnes (24 Coach WAP hauled trains) on a continuous
down gradient of 1 in 200 at a speed of
40 kmph and also to reduce the speed from its
normal running speed 110/110 kmph to 40 kmph.
The main benefit of this system is limination of
MVRF that is used for cooling of DBR for WAG-
7 Locomotive. It has reliability issues and always
leads to failure of MVRF on account of water ingression
and low IR plus other problems that subsequently
fails the DBR.
To overcome this problem, Naturally Cooled DBR is
the best solution.
Roof Mounted DBR construction saves space inside
the locomotive, very useful on high speed locomotives,
long life and maintenance free. |
