ट्रैक मैंन को अब मिलेगे एसी के तीन पास

12-03-2019
Why do locos sometimes use the rear pantograph and sometimes the front pantograph?
June 22, 2019

There is in principle no difference between using the front and the rear pantographs for most locos as each is fully capable of delivering the required electric current from the catenary to the loco. (The AC-DC locos are special in that each loco is intended for a different traction supply.) Generally on IR there is no need for both pantographs to

Read More
When does the driver have to lower and raise a pantograph on the run?
June 22, 2019

Normally, pantographs do not have to be lowered and raised on the run. The principal exception is the case of the AC-DC switchover by the WCAM series locos as described above. Other than that, there are a few points where the catenary has a gap (no cable physically present, not even a neutral or dead section), for instance at level crossings where

Read More
What happens if the pantograph isn’t lowered when the loco enters the dead zone?
June 22, 2019

Usually there is no problem, if the master circuit breaker of the loco has been switched off. In most cases of neutral sections, therefore, the driver does not have to lower the pantograph. If a live loco enters this section without its master circuit breaker turned off, then there is a possibility of sparking or transient disturbances, which can

Read More
What happens if the wrong selection has been made at the wrong time?
June 22, 2019

Not all IR locos have protection against incorrect line supplies, and the loco can be severely damaged in such cases. In some cases, this will blow a fusible link located near pantograph, and the driver will have to raise the appropriate ALT pantograph to continue. No further damage is possible because the only equipment that is live when

Read More
How are DC locos swapped for AC locos at the point where traction power changes from DC to AC?
June 22, 2019

Today while the the Mumbai area is still mostly at 1.5kV DC, there are a couple of important AC-DC transition points such as Igatpuri -- now Kasara -- and Virar. In time, when 25kV AC becomes the norm and DC traction is decommissioned, these transitions will be history and there will be no more traction changeovers! Sad for railfans, but perhaps

Read More
Why is the neutral section provided with a dummy (neutral or electrically dead) cable? Why can’t it be a real gap?
June 22, 2019

Pantographs of electric locomotives have a spring mechanism or compressed-air assembly that keeps the pantograph pushing up against the contact wire with a certain specific pressure. If the neutral section were not wired and the contact wire simply ceased to exist, then then possibility exists that if the driver has not dropped the pantographs at

Read More

General - Public

Raipid Rail क्या है? कैसे बदलेगा शहरों का भविष्य | Delhi-Meerut RRTS पूरी जानकारी

view all>>

Latest News

Telephone Directory – Indian Railway Officer –  West Central Railway 

1 Rail News

Raipid Rail क्या है? कैसे बदलेगा शहरों का भविष्य | Delhi-Meerut RRTS पूरी जानकारी

view all>>