bids are invited for protection relays and switchyard upgradation protection panel and its accessories - item no 1 to 10 of price schedule are for item no 1 and 2 of item and quantity reuirement , dp relay , lbb relay , mt relay , supervision relay for tripping relay , trip circuit supervision relay , annunciation module , dc circuit supervision relay , dc changeover relay , auxiliary, contact multiplication relays along with all accessories , protection panel and its accessories - item no. 11 to 18 are for item no. 3 and 4 of item and quantity reuirement , esr module complete with self diagnostic feature , esr module complete required for retrofitting , evaluation unit pc complete set , software , printer , industrial ethernet switches , fibre optic cables with splicing , light interface units , distance protection relay with accessories , over current and earth fault numerical relay with accessories , industrial ethernet switches with accessories , fibre optic cable with splicing item no. 22 to 24 for item no. 9 of item and quantity reuirement , light interface units , cat 6 cables , control cables , installation, commissioning and testing charges , cable lying total quantity : 14892