Indian Railways electric locomotive WAP4 22293. The WAP 4, introduced 1994 and built in more than 600 units, is a development of the WAP 1, with higher power electrics. To use the Hitachi traction motors of the WAG7, the underframe and transformer had to be reduced in weight. 3989 kW, 140 km/h. Sawai Madhopur, 2012-12-18.