Electrical Engineering and Railways
‘EARTHING’, a must for every one to understand its importance for Electrical Safety
Last updated on September 29th, 2015 at 06:05 am The word ‘earthing’ is used in UK whereas ‘grounding’ in US but meaning the same. Earthing has a significance in electrical engineering to the fact that earth has very high capacitance of .0007 F, a very high value assuming it be infinity, and not to cause any […]
What is Electricity, Drift Velocity and Electric Current?
Last updated on April 5th, 2015 at 06:18 am Electricity is flow of free electrons and also called flow of charge. While doing so, it does work and has been made use during the last two centuries by scientists and engineers to help mankind. Electronic charge can be made to flow under the action of […]
Weight Transfer during Braking
Last updated on April 5th, 2015 at 06:18 am On application of brakes on the vehicle, inertia forces are set up. The braking force is applied at lesser height whereas the vehicle load is at a higher height, resulting a couple to act on the body of the vehicle. This results an additional loading on […]
Overhead Equipment – Section Insulator
Last updated on April 5th, 2015 at 06:18 am Section Insulator is a device installed along with the contact wire for insulating two elementary sections where the pantograph of the locomotive negotiates smoothly and maintaining the current continuity. It is used in crossover, turnouts, maintenance pits and yard line, etc. During movement of locomotive pantograph, […]
Overhead Equipment – Overlaps
Last updated on April 5th, 2015 at 06:18 am In electrical circuit, the series and parallel connections are made using junction box, twisted of cables together, soldering, brazing, etc. This is not possible in case of overhead contact and catenary wire. Similar purpose in OHE is achieved through overlaps. Overlap is defined as an arrangement where […]
Over Head Equipment – Neutral Section
Last updated on April 5th, 2015 at 06:18 am Electrical power is generated in three phases with each phase having a phase shift of 1200. The utility power supply system also expects equal loading on all phases. Traction power system works on single phase 25kV traction system. It now becomes important to use all the […]
Over Head Equipment – Cantilever
Last updated on April 5th, 2015 at 06:17 am Cantilever hold the assembly of contact wire , catenary and dropper assembly. It transfers all vertical load, lateral forces and bending moment load through insulator to Mast. It is an insulated swiveling type structural member and keeps the overhead catenary system in a position assisting smooth […]
Introspection of the Energy Conservation Success of Indian Railways as stated in Vision 2020 document
Last updated on February 25th, 2014 at 02:18 am Energy conservation finds a mention in the vision statement of Indian Railways. Was it a show case to impress someone those matters? Is Indian Railways honestly used the buzz word ‘Energy Conservation’ and implemented it in its grass root policies? There is no scope to question […]
Understanding electical cable and and its role in fire
Last updated on April 5th, 2015 at 06:17 am Cables are used for transport of electric power from one place to another with freedom to take it through any available space. Transmission of electric power through cable has the following advantage over overhead wire Very less right of way Lower visibility Minimum effect due to […]
How a locomotive works a train?
Last updated on April 5th, 2015 at 06:17 am When we were child, looking at the mammoth size of steam engine powering the train was a wonderful sight. The wheel in front of the loco pilot was assumed to be driving wheel similar to road vehicle. Self steering rail-wheel profile is the reason for negotiating […]