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Electrical Engineering and Railways

Regeneration in Electric Locomotives with DC Traction Motors : A Strategic Domain

By on December 31, 2013
Regeneration in Electric Locomotives with DC Traction Motors : A Strategic Domain

By: Mr R.N.Lal, Senior Executive Director Standards  & Mr Ganesh, Director, Standards Electrical Directorate, Research Design and Standards Organisation , Lucknow  Introduction Out of all modes of transportation system, only Indian Railways (IR) has been matching with the burgeoning growth of the economy of India by maintaining the unit price in spite of steep rise in […]

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Over Head Equipment – Foundation

By on November 25, 2013
Over Head Equipment – Foundation

Foundation should be capable to support the vertical load of mast, bending moment due to static and dynamic load of OHE. Foundation design mainly depends on Soil and conditions prevailing at the location. There are certain masts at which OHE contact wire is terminated thus requiring anchor mast to balance the anchoring load. Types of […]

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History of Electric Locomotive over Indian Railways

By on November 23, 2013

Electric Traction on Indian Railways started with 1500V DC traction and therefore initial Locomotives finding place on Indian Railway maps were only DC Locomotive. The development of locos on Indian Railways thus started.   Traction voltage system started from 1500V DC, 3000V DC in Howrah Division of Eastern Railway for short period before converting into 25kV […]

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Electric Locomotive

By on November 23, 2013
Electric Locomotive

Steam Locomotive has always been a subject of curiosity amongst generation from the time introduced over Indian Railways. Railways have mainly been identified by its rhythm sound most popularly called Chuk-Chuk Jude. With the advancement of technologies led to the introduction of electric and diesel locomotive replacing steam locomotive which has now gone into oblivion. […]

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Specific Energy Consumption of High Speed Rail as compared to Semi-HSR

By on October 20, 2013
Specific Energy Consumption of High Speed Rail as compared to Semi-HSR

There is a general belief that the train resistance (resulting high specific energy consumption) of high-speed train is high as compared to normal speed train. The UIC sponsored study proved it otherwise with following arguments explained in the discussion Curve Resistance: High speed Rail routes had to be straighter, a must for the high-speed route, […]

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2×25 kV Traction System

By on September 13, 2013
2×25 kV Traction System

What is 2×25 kV traction system 2×25 kV traction system means transmission at 50 kV and using at 25 kV voltage system. 50 kV transmission benefits for Improved voltage regulation and reduced transmission line losses Increased Traction Substation spacing Improved Load factor as number of trains fed  per feeding post are more 25 kV traction […]

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Return Conductor and Booster Transformer

By on September 1, 2013

A current carrying conductor produces its own magnetic field around it. This magnetic field varying with time induces an electro – motive force (emf)  in a conductor parallel to the current carrying conductor.  This induced emf disturbs the communication and signalling line and while undertaking electrification works, precautions are required to be taken to prevent this side effect. […]

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25kV Traction Power Supply System

By on August 31, 2013

25 kV Single Phase is the most preferred and universally accepted voltage standard for overhead traction system. Looking for any other voltage system, means every things has got to be developed namely traction power supply system, Over Head Equipment, vehicle traction system etc. In order to increase OHE voltage. 2×25 kV system is developed so that at vehicle level, […]

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Economics of Electric Vs Diesel Traction – Fuel and Line Haul Cost

By on July 25, 2013
Economics of Electric Vs Diesel Traction – Fuel and Line Haul Cost

Economics of Electric vs Diesel Traction on account of fuel cost is evaluated based on the rupees spend towards energy bill for hauling 1000 GTKM of load. The trend of electrical and diesel energy cost in terms of unit charges and Rs/litre as compiled in the annual statistical statement of Indian Railways is as follows: […]

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Electrical accidents waiting to happen…

By on July 23, 2013

There was news in Times of India that 2 held for filmaker’s death – shop owner accused of causing death due to negligence. The mother-son were accused of leaving naked electric wires dangling out in the open in contravention of safety norms that led to the freak yet fatal accident. Careless usage of electricity leads to this. Electrical safety […]

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