Replacement of LT bus duct at APC Power House NSCBI Airport Kolkata

Supply, Installation, Testing and Commissioning of pre-fabricated sandwiched type 4000 amp TPN (100% neutral rating) busduct suitable for 3 phase 4 wire, 415V, 50 Hz AC supply system of aluminium bus bars having class F insulation complete with bends, expansion joints, end flange with enclosure, horizontal supports & copper flexible connections at both ends. Busduct system shall be IP-54 and made out of minimum 1.5 mm thick G.I. sheet enclosure. Busduct shall be provided with 2 runs of continueous aluminium earth bus including necessary hanging supports, G.I. clamping brackets, suspenders, angle iron bracket, fasteners, connecting to earthing system etc. as per specification as required. (Note: The busduct shall be measured along the length of enclosure. The aluminium strips which will go inside L.T. panels & end termination boxes of transfomers shall not be taken into measurement of quantity).

Supply, Installation, Testing and Commissioning of pre-fabricated sandwiched type 2000 amp TPN (100% neutral rating) busduct suitable for 3 phase 4 wire, 415V, 50 Hz AC supply system of aluminium bus bars having class F insulation complete with bends, expansion joints, end flange with enclosure, horizontal supports & copper flexible connections at both ends. Busduct system shall be IP-54 and made out of minimum 1.5 mm thick G.I. sheet enclosure. Busduct shall be provided with 2 runs of continueous aluminium earth bus including necessary hanging supports, G.I. clamping brackets, suspenders, angle iron bracket, fasteners, connecting to earthing system etc. as per specification as required. (Note: The busduct shall be measured along the length of enclosure. The aluminium strips which will go inside L.T. panels & end termination boxes of transfomers shall not be taken into measurement of quantity).

Dismantling of existing LT indoor sandwiched type busduct upto 4000 amp rating suspended from ceiling including removing joints, elbow, expansion joints, bend, adaptor box, clamping brackets, suspenders, angle iron bracket, steel fastener etc. as per requirement including stacking of those dismantled bus duct as directed location by suitable mechanical means / manpower. (Note : The bus duct shall be measured along the length of enclosure. The aluminium strips which will go inside L.T. panels & end termination boxes of transformers shall not be taken into measurement.)