Indeed, there were some electrical issues with the P7 hauling it which led to detainment of train at ALD
(New Delhi-Dibrugarh/Rajdhani/Load-21 Coaches) Detained at Allahabad for unscheduled loco changed due to working loco failed. After passing Sath Naraini (SNIE) station VCB tripped with message on DDS "Dis. in con-1 and Traction bogie-1 isolated itself". On arrival put MCE off/on got succeed but after starting again stopped due to speed not increased more than 2 kmph with message "Error in techo genrator-2". Train back to under starter. Fresh loco given. IC-17.05.16, TI/NDLS-06.08.16, Major-Allahabad (ALD) station, Time-21.30-23.37=127-3=124' extra. Loco at ALD Yd.