procurement of numerical relays with installation at feeder panels procurement of numerical relays with installation at feeder panels of various 33 / 11 kv substations under etl rudrapur under etd rudrapur , supply , supply of 11kv and 33 kv feeder protection numerical relays having 3 phase overcurrent and earth fault protection having specific feature of broken conductor detection under circumstances. ( as per technical specification ) , labour charge , charges of dismentling of old relays and control wring and retro fitting of new relay and relay bord cutting and fixing bord in panel. , testing of numerical relay after installation by testing secondary / primary injection set.