IR WDM-3A 14034Kulem Goa Kulem

I thought the ledge on the roof of a small bonnet is only for WDM3D. I'm talking about the element where the searchlight, typhon and locomotive index.

@white.dead That is where they place the Dynamic Brake Resistor (DBR ) in WDM-3A and WDM-3D after rebuilt

@white.dead Here is the tech spec of roof mounted DBR http://www.daulatram.com/dy3.htm

@jmadhavadas
For some reason I realized that there are brake rheostats. The construction reminds this. It seems to me that in a terrain where this line passes a rheostatic brake, it is very necessary. One descent from the mountain, where the Dudhsagar waterfall gives wear to the brake shoes.
I looked at the link information. This company also puts the braking equipment on electric locomotives.
Thanks for the info!