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What driver vigilance or driver alertness systems are used by IR in its locomotives?

20-06-2019

Several loco classes have speed limiters with buzzers that go off when the prescribed speed is exceeded. In some cases these may also result in the application of brakes. Some WAP-4 locos have the buzzer system and it is set for a speed of 130km/h although they are capable of going faster, while a few WAM-4 locos have it at 110km/h (although not all WAM-4 locos have the buzzer system as it requires a relatively more recent speedometer assembly to be retrofitted in them). Some WAG-5 locos and others also have such warning systems. The WCAM-3 loco, limited to 105km/h by its bogies, has the buzzer set to its top speed. ये भी पढ़े - इंसान ही नहीं

How are phase breaks (AC) or power gaps (DC) handled by the locomotives?

July 16, 2019

The catenary has breaks or gaps in its electrical continuity every once in a while at points where successive sections are connected to different substations. A neutral section of catenary is usually provided between the two live sections of different phases or connected to different substations. At such points, single locomotives do not drop

How do the new 3-phase AC locos (WAP-5, etc.) work, and how do they compare with the earlier locos?

July 16, 2019

Three-phase AC locos such as WAP-5 use some fairly new technology as compared to the earlier generations of diesel-electrics and electrics. In most of the earlier locos, the traction motors driving the axles are DC motors. DC motors were used because they afforded (in those days) far superior speed and torque control compared to AC motors — the

What’s the history of electric traction in India?

July 16, 2019

The first electric train ran between Bombay's Victoria Terminus and Kurla along the Harbour Line of CR, on February 3, 1925, a distance of 9.5 miles. In 1926, Thana and Mahim were connected. In 1927, electrification was complete up to Kalyan. In 1928, Borivili in the north was connected (Colaba-Borivili of WR being inaugurated on May 1). In 1929,

Freight stock often has the words “Not to be loose shunted” –– what does this mean?

July 16, 2019

In marshalling yards and elsewhere, a common technique of moving a wagon around is "loose shunting", where the wagon to be moved is not coupled to the shunting loco, and simply pushed to the correct location. Usually, a rake that is being built up is on one of several sidings branching off from a section of track where the shunting loco is

What kinds of couplers are used on IR’s trains?

July 16, 2019

IR passenger stock is mostly built with side buffers and screw couplers that have to be manually connected. The side buffers have single helical spring elements. The notable exceptions are the new Alsthom LHB design coaches that have CBC (centre-buffer-coupler). IR is now introducing tightlock CBC on passenger stock. This started as an

What are ‘auto-emergency’ brakes?

July 16, 2019

Many locos used in steep ghat sections also have an 'auto-emergency' ('AE' or 'AEB') brake system, which consists of an additional safety circuit which monitors the speed and applies the brakes to slow down or halt the locomotive if the speed rises above a certain threshold (sometimes 25km/h or so, but this varies with the route and the working

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What driver vigilance or driver alertness systems are used by IR in its locomotives?

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