Overhead Equipment in Electric Traction Systems: Simplest type of overhead equipment in electric traction systems consists of a single contact wire supported either by bracket or by overhead span. The maximum distance between two consecutive…
Automatic Block Signalling System in Railways: The purpose of automatic block signalling system in railways is to keep trains apart but permit spacing as close as safety permits. For optimum utilization of track capacity with…
Operations of Traction Power Controller (TPC): It is provided to have a comprehensive picture of supply conditions and arrangement to operate switchgear with minimum delay so that continuity of electric supply to the track, which…
Major Traction Substation Equipments: The Major Traction Substation Equipments are namely, traction transformer circuit breakers and interruptor. 1. Traction Transformer Transformers are required to step down the grid supply voltage (220 or 132 kV) to…
Systems of Track Electrification AC Electrification System: As even in single phase electrification, the substations are necessarily required to keep the voltage drop within permissible limits. The type of substations required depends upon the nature…
Systems of Track Electrification DC Electrification System: The substations are necessary for control of electric supply to a considerably long network in systems of track electrification DC electrification system. DC Substations: These substations are required…
Calculation of Sag and Tension for Trolley Wire in Electric Traction: Calculation of Sag and Tension for Trolley Wire in Electric Traction - A flexible wire when suspended horizontally between two supports it would assume…
Overhead Construction for Tramways, Trolley Buses and Railways: As we know already that, for trams, trolley buses and for railways operating at 1,500 V and above overhead contact wire is used. The design of overhead…
Current Collector for Overhead System and Types of Current collector in traction: The current in the overhead system is collected with the help of sliding contact collector mounted on the roof of the vehicle. The…
Current Collection System in Electric Traction and Types of Current Collection: There are mainly two systems of current collection system for locoÂmotives, tramways or trolley buses viz Conductor rail system and Overhead system. Current collection…
