WAP-4 Wap-4(Wide AC Passenger) is an Indian Class locomotive developed by Chittaranjan Locomotive Works for Indian Railways. A total of 778 Wap4 class engines served the public from 1993-2015. Driven by 25kV 50Hz electric overhead with Hitachi motors it has a Co'-Co' type of bogie. WAP-7 Wap-7(Wide AC Passenger) is an Indian Class locomotive developed by Chittaranjan Locomotive Works for Indian Railways. It is the powerful passenger hauler of Indian Railways at present. It can haul 18 coaches at 100+ kmph speed with a fast acceleration. A total of 1461 locos of WAP-7 is serving the Railway sector. Driven by 25kV 50Hz electric overhead with squirrel cage induction motor it has an output power of 6,350hp with a Co'-Co' type bogie. ...