Shinkansen overhead wire bother: Train hit the dangling overhead wire on account of damaged components | NHK

On the twenty third, on account of an issue that brought about the Tohoku, Hokuriku, and Joetsu Shinkansen trains to droop operation over a large space for an prolonged time frame, JR East introduced that the components that regulate the stress of the overhead wires broke, inflicting the overhead wires to sag and inflicting harm to working trains. It has been revealed that the trigger is believed to be on account of contact.

Source