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Electric Locomotive

Selection of Suspension Arrangement of Traction Motors : A Right Approach

By on December 10, 2014
Selection of Suspension Arrangement of Traction Motors : A Right Approach

Abstract Motor suspension arrangement is of paramount importance for the reliability of traction motors. Another vital input for the selection of traction motor for given motor suspension arrangement is its rotational speed. Non-availability of any complied information on the relationship of rotational speed of traction motors and their mounting arrangement makes the jobs of Rolling […]

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Multiple Choice Question on Basic Concept of Science Class X Standard Practice Test 2

By on November 28, 2014

What is Electricity, Drift Velocity and Electric Current?

By on August 9, 2014
What is Electricity, Drift Velocity and Electric Current?

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 magnetic field associated with motion called electric generator, chemical […]

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Weight Transfer during Braking

By on June 5, 2014
Weight Transfer during Braking

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 leading bogie as compared to trailing bogie. Let H […]

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How a locomotive works a train?

By on February 16, 2014
How a locomotive works a train?

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 on curve and the wheel in front of the […]

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Re-engineering of Stators of Three phase Traction Motors type 6FRA 6068 used in WAG9/WAP7 locomotives for Improving their Reliability

By on January 17, 2014
Re-engineering of Stators of Three phase Traction Motors type 6FRA 6068 used in WAG9/WAP7 locomotives for Improving their Reliability

Research By: R.N.Lal, Senior Executive Director Standards, Ganesh , Director Standards Electrical Directorate , Research Design and Standards Organisation , Lucknow Abstract Insulation and brazed joint failures in the stators of three phase traction motors used in electric locomotives on Indian Railways are primarily on account of excessive shock and vibration and unsupported long length […]

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Selection of Suspension Arrangement of Traction Motors : A Right Approach

By on January 13, 2014
Selection of Suspension Arrangement of Traction Motors : A Right Approach

Abstract Motor suspension arrangement is of paramount importance for the reliability of traction motors. Another vital input for the selection of traction motor for given motor suspension arrangement is its rotational speed. Non-availability of any complied information on the relationship of rotational speed of traction motors and their mounting arrangement makes the jobs of Rolling […]

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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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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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