You should have seen the letters WDP-3A ,WDM-3F or some thing like this painted on the front and sides of an engine,but have you guys ever wondered what these letters stand for?
Classification of Indian Locomotives
You should have seen the letters WDP-3A ,WDM-3F or something like this painted on the front and sides of an engine,but have you guys ever wondered what these letters stand for?
Well, these letters are used to classify these locos according to their track gauge,the motive power,the work they are suited for and their power or model number.
The first letter (gauge)
The second letter (motive power)
The third letter (job type)
The fourth letter is used to denote locomotives’ chronological model number. However, from 2002 a new classification scheme has been adopted. Under this system, for newer diesel locomotives, the fourth letter will denote their horsepower range. Electric locomotives don’t come under this scheme and even all diesel locos are not covered. For them this letter denotes their model number as usual.
For them this letter denotes their model number as usual.
Or, in “WAP 5“:
A locomotive may sometimes have a fifth letter in its name which generally denotes a technical variant or subclass or subtype. This fifth letter indicates some smaller variation in the basic model or series, perhaps different motors, or a different manufacturer. With the new scheme for classifying diesel locomotives (as mentioned above) the fifth item is a letter that further refines the horsepower indication in 100 hp increments: ‘A’ for 100 hp, ‘B’ for 200 hp, ‘C’ for 300 hp, etc. So in this scheme, a WDP-3A refers to a 3100 hp loco, while a WDM-3F would be a 3600 hp loco.