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 loco­motives, tramways or trolley buses viz Conductor rail system and Overhead system. Current collection…

What is Electric Traction? - Introduction, Definition, Working, Advantages and Disadvantages Electric traction was first introduced in Britian in the year 1890 at 600 V dc using third rail for urban and suburban services. For…

What is Flood Lighting? - Definition and Calculations Flood lighting means flooding of large surfaces with light from powerful projectors. It is employed to serve one or more of the following purposes. Aesthetic Flood lighting:…

What is Street Lighting? - Objectives, Principles and Types The main objects of street lighting are : To make the traffic and obstructions on the road clearly visible in order to promote safety and convenience.…