Const. of Earthing for Power transformer at various 33 11 KV S S Devari Gajan, Khanda Sehrol And Shahbad under S. Div. Shahbad

Amount

PART- B (Item Rate Basis)

P/F EHCC certified ground tubular effective earthing system/ hollow tube bar with GI pipe in pipe technology for L.Y. /H.Y. line EEE5030 size outer dia 65mm x 60 mtr. (depth) kv transformers with 20 bags of highly conductive packing material mineral filling compound (MFC should have hygroscopic property to retain the moisture for long time to creat low resistance zone) 25 kg each for putting around one electrode IS : 1987CPRI tested for 15ka / suitable commisoning of tubular earting system earth pipe (GI pipe 65mm x60 mtr. paid seperatly ) the pipe shall be done perfotation 3 to 5 mm size all around of available GI pipe in Zig Zag shap & making air vent with welded GI plates as per enclosed drawing i/c of welding & inserting of pipe in exesting hole & paking of material with sandy soil / sand upto top of hole & CC finished chamber covered with hinged type with locking arrangement CI frames of size 300x300mm complete finished i/c cost of testing of earth resistance as required around 2 ohm arrange by contractor every time on directing etc. work done as per direction of Engineer in charge.