Has anyone got any information and/or photos about the traction current bleed resistors at the end of the traction current sections, please? We're in need of something for the Tramway Museum so any information would be helpful, thanks. Info such as current rating, resistance value, and potential suppliers (sorry for the pun....)
They provide an Earth reference, which is how we end up with a +420v rail (the posi) and a -210v rail (the negi). This known earth reference makes it easier to detect unwanted earths, i.e. a short between a con rail and a running rail.