supply of 33kv , 400 a , triple pole , double break isolators as per scope of supply at 3x105 mw , thps-i , sirmour , supply of 33 kv , 400 a , triple pole , manually gang operated , double break , centre post rotating , outdoor type , off load isolators without earth switch , consisting of hot dip galvanized channel iron base and h . t . original post insulators , copper or copper alloy high pressure heavily tinned complete with horizontal mounting , horizontal connecting g . i . pipe & g . i . pipe as down rod , coupling for pipe , lever and operating handle with locking arrangement and 4no + 4nc auxiliary switch for main switch , manufactured as per iss 1818/1961 . ( using 2nos: 22 kv post insulators per stack & 3 stack per phase ) , supply of 33 kv , 400 a , triple pole , manually gang operated , double break , centre post rotating , outdoor type , off load isolators with manual operated earth switch , consisting of hot dip galvanized channel iron base and h . t . original post insulators , copper or copper alloy high pressure heavily tinned complete with horizontal mounting , horizontal connecting g . i . pipe & g . i . pipe as down rod , coupling for pipe , lever and operating handle with locking arrangement and 4no + 4nc auxiliary switch for main switch and 2 no + 2nc auxiliary switch for earth switch , manufactured as per iss 1818/1961 . ( using 2nos: 22 kv post insulators per stack & 3 stack per phase )