The South Eastern Railway, Ranchi, on behalf of the President of India, invites online e-tenders for the maintenance, operation, and troubleshooting of 500 kVA Cummins DA sets (CPCB-I, II & IV) along with power car, LSLRD escorting, and HOG activities for two years. Bidders must hold a Class-III Digital Signature Certificate, register on IREPS Portal, and submit their electronic bids before the closing deadline on July 15, 2026, at 4:00 PM.