tender for supply of material in o/m head under edc-ii, prayagraj. refer to tender description , particulars of supply material , pipe in pipe earthing electrode-gielectrode is a systematic pipe earthing system designed in accordance to is : 3043 (1987). the system consists of two electrede and secondary earth electrode. both the electrodes are subjected to hot dip galvanization process. after galavanization, secondary electrode is inserted inside the primary electrode. the empty space between the two is pressure filled with highly conductive crystalline mixture alloys and other conductive materials. this pressure filled mixture enhances the copacity of electrode electrically as well as mechanically, both the ends of the electrodes are sealed, with the end terminal having two holes at the top for connecting the earthing system to the equipment /load. model- hirel 3/80____________________________________length- 3000_______________________________________ outer dia (mm)- 78-80 ______________________________ inner dia (mm)- 47-50 ______________________________terminal (mm)- 50/6 ___________________________ , strip in pipe earthing electrode-gielectrode is a systematic pipe earthing system designed in accordance to is : 3043 (1987). the system consists of primary earth electrode and gi strip._________________________________________model- hirel3/80 : s_________________________________length- 3000_______________________________________ outer dia (mm)- 78-80 ______________________________ terminal (mm)- 50/6 ___________________________ , 33 kv lighting arrester , 11kvct resin type current current ratio 400/200/5 amp burden 15 va suitable for 11 kv ct resin type burden 15 va is 2070, 2705 , vaccum interpptor metalized ceremic for 11 kv crompton vcb current relay 1250 a 80 hz 11000 volt