The Indian locomotive class WAP-7 is a class of 25 kV AC electric locomotives that was developed in 1999 by Chittaranjan Locomotive Works (CLW) for Indian Railways. The model name stands for broad gauge (W), AC Current (A), Passenger traffic (P) engine, 7th generation (7). They entered service in 2000. A total of 1412 WAP-7 have been built, with more units being built at CLW, Banaras Locomotive Works (BLW) and Diesel-Loco Modernisation Works (DLMW).
The WAP-7 is one of the most successful locomotives of Indian Railways serving passenger trains for over 21 years. It is a passenger variant of the WAG-9 freight locomotive with a modified gear ratio to pull lighter loads at higher speeds. With an output of 6,350 hp (4,740 kW), it is the most powerful passenger locomotive in the Indian Railways fleet, and the most numerous passenger locomotive in India, with a total 1412 locomotives built as of November 2021. The WAP-7 is capable of hauling 24 coach trains at speeds 110–140 km/h (68–87 mph).
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