<Tr> <Th> Locale </Th> <Td> All Over India </Td> </Tr> <Tr> <Th> Disposition </Th> <Td> active </Td> </Tr> <P> The WAG - 9 is a type of electric locomotive used in the Indian Railway and the most powerful freight locomotive of the fleet . It is similar to the WAP - 7, but feautres a different gear ratio which makes it suitable for heavy freight operations . In November 1998, the Chittaranjan Locomotive Works (CLW) started producing these with indigenous components . The first of which, named' Navyug' (translated,' New Era'), was produced on November 14, 1998 . Like the WAP - 5 units, the WAG - 9 has GTO thyristor converters and three - phase asynchronous motors . </P> <P> Newer versions of the WAG - 9 feature full IGBT traction control; the debut model was the WAG - 9 31248 . The class as a whole is denoted by the WAG - 9i prefix in its model number, although, there is a technical variant of this class named WAG - 9H, with the' H' meaning Heavy . </P>

Which is the most powerful engine in indian railways