bids are invited for main-1 & main-2 generator protn relay as per it-01 of ann-1 ( q3 ) , accessories as per it-02 of ann-1 ( q3 ) , num 3-wdg overall diff. protn relay as per it-03 of ann1 ( q3 ) , num directional / non directional 3 ph o / c & e / f protn relay as per it-04 of ann-1 ( q3 ) , num gt overhang differential protn relay as per it-05 of ann-1 ( q3 ) , metrosil as per it-06 of ann-1 ( q3 ) , stabilising resistor ( 0-1000 / 0-5000 ohms ) as per it-07 of ann-1 ( q3 ) , ethernet switch ( 8cu+ 4fo ) as per it08 of ann-1 ( q3 ) , evaluation unit as per it-09 of ann1 ( q3 )