24-04-2017, 05:24 PM
So were the heaters on the Southern rail slam door stock, 3 x 250v heaters wired in series across the line volts, but you'd loose all three if a single heater element blew.
Apparently 650DC for light railway systems is more cost effective and easily controllable. However, one of the oddest I ever heard of was on a railway in Southern Africa, think it was the Namib, which was wired for 25kv but the locomotives had MG sets fitted as the volts in some of the more remote sectors from the feeder substation dropped down to as little as 16kv and the aux feeds from the transformers would brown out.
Apparently 650DC for light railway systems is more cost effective and easily controllable. However, one of the oddest I ever heard of was on a railway in Southern Africa, think it was the Namib, which was wired for 25kv but the locomotives had MG sets fitted as the volts in some of the more remote sectors from the feeder substation dropped down to as little as 16kv and the aux feeds from the transformers would brown out.
