ETNo-14/EDC-1/MT/2026-27

Supply and Erection of Water level Earthing by Boring and lowering by Providing of G.I. Pipe size 40 mm dia, into the ground upto water level or minimum 20 Mtr, which ever is more, with the lower end of solid copper cone Approx 224 mm long and 750 gm in weight shall be provided and screwed in pipe as well bringing out a continuous copper wire 6 swg, from the cone upto he ground surface where it will be bolted to the G.I. Strip for Transformer nuetral connection, the G.I Strip will be connected to star point through providing Copper Bond Strip of size- 35x6 mm, as per Pvvnl Guidline. Edd-I=23, Edd-3=40, Edd-4= 132

Providing and Fixing of MS Earthing set of Each 11 KV line and Pole after drive of electrodes if size 20 mm x 250 mm and Connection the Earthing Point with G.I. wire. Edd-III=470

Providing Installation testing of earth electrode pipe in the strip terminal tipe chemical earthing proper hot deep galvanized. Dia 50 MM length 3 meter down conductor size 32x6 terminal connection hole dia 8mm.The cavity between the strip & pipes is filled with conductive mixture for hermetical filling inside the cavity i.e. between secondary conductor & primary conductor, crystline compound is to be injected in the electrode assembly it is a combination of high conductivity metal alloys, copper & aluminum powder, conductive carbon/cement and bonding material etched electrode should be sealed from both the ends the outer pipe of the electrode should be zinc coated the characteristics of this compound is highly conductive, non magnetic & non corrosive in the GI supply of PGS backfill compound each electrode should be supplied with bags of 25 KG x 2 BFC compound (ground resistance enhancement powder 50 kgs each CPRI tested. The work carried out in division EDD-1 & EDD-4 as per following no of DT T/F. EDD-3 EDD-4 30 No. 51 No.