supply of supply, testing, installation and commissioning of over-current (oc) and restricted earth fault (ref) protection relay, , supply, testing, installation and commissioning of over-current (oc) and restricted earth fa ult (ref) protection relay, suitable for existing ashida make relay and control panels of 132 kv/25 kv tracti on sub-stations (tss), for both hv and lv sides, complete with mounting hardware, terminals, wiring acces sories and all necessary fittings, ready for operation in all respects, suitable for ashida make panel and fully compatible with the existing protection scheme, scada system and associated ct/pt arrangements. the o ffered relay shall comply with rdso specification no. ti/spc/psi/protct/6072 or latest applicable specifica tion, including all applicable amendments/corrigenda. the scope shall include site testing, protection settin g, configuration, integration with the existing protection and scada system, functional testing and commis sioning, including all necessary accessories, wiring, software/configuration and other incidental works, com plete in all respects. necessary software and communication accessories shall also be provided for downlo ading relay data for fault analysis. [ warranty period: 30 months after the date of delivery ] ]