Train movement on the Delhi-Kanpur section was badly disrupted on Sunday due to a power failure in the Northern Grid, Railway officials said.
While the worst affected section was Delhi-Tundla-Kanpur, the Ambala-Delhi section was partially affected due to disruption of electricity supply since 0500 am, a senior Railway official said.
"The electricity supply to the overhead cable, which supplies power to the engine, was completely down, bringing the movement of trains to a halt," he said adding 36 trains, including Rajdhani and Garibrath were delayed and seven trains were rescheduled.
The officials said the Railways was taking all emergency measures and diesel engines were being dispatched to resume the services. "We are not getting power supply due to power failure in the Northern Grid," an official said.
The trains which were rescheduled include Sikkim-Mahananda Express, Lichavi-Express, Mahabodhi Express, Purva Express, Vikramshila Express, Jansadharan Express Bihar Sampark Kranti Express.
A passenger on the Delhi-bound Sampoorna Kranti Express told PTI: "There is no train movement since the last two hours. We are completely stuck at the Tundla station."