NIT NO. 17 (2021-2022) EE(SDW)VI / ITEM NO.9

Repair/Renovation of LT Panel ACB and allied work at Sayyad Nangloi SPS for executing the work as per the following specifications. Dismantling the exisiting complete 1 no of Incomer ACB of 2500 Amp form the chamber of the main LT Panel including their cradles and disconnecting the Bus-Bar connections with the main bus-bar, disconnecting the outgoing cables etc. Dismantling the ACB in the complete shut-down and safe conditions.

Dismantling the exisiting complete 4 Nos of outgoing ACBs of 1000 Amp form the chambers of the main LT Panel including their cradles and disconnecting the Bus-Bar connections with the main bus-bar, disconnecting the outgoing cables etc. Dismantling the ACBs in the complete shut-down and safe conditions.

Providing of Air Circuit Breaker (ACB), 3 Pole, 415V, Breaking Capacity-60KA, Current Rating capacity 2500 Amp, EDO type with microprocessor release. Make: L&T/ABB/Siemens/C&S/DJB approved make.

Providing of Air Circuit Breaker (ACB), 3 Pole, 415V, Breaking Capacity-50KA, Current Rating capacity 1000 Amp, EDO type with microprocessor release. Make: L&T/ABB/Siemens/C&S/DJB approved make.

Installation of the cradle of the ACB as above at the panel in proper aligment for making the connections after proper cleaning of the chamber for removing anf cables etc. including modification/making mounting arrangement for fixing of new ACBs

Fixing the ACB in the cradle in proper drawable condition including checking the movement along with making control connections as suitable for operating the New ACBs

Connecting the bus ducts and the incoming sides of new 2500 Amp ACB by rearrabgement/modification/extension/addition of Bus-Bar lengths in aluminium construction of similar cross section as per existing as required for retrofitting of ACB and making the required joints including bending/cutting/shaping of the Bus-Bar as required. The job includes providing of material and other consumables as per site requirement and tools and tackles as per requirement.

Connecting the main Bus-Bar of LT Panel and the outgoing sides of New 2500 Amp ACB by rearrabgement /modification/ extension/addition of Bus-Bar lengths in aluminium construction of similar cross section as per existing as required for retrofitting of ACB and making the required joints including bending/cutting/shaping of the Bus-Bar as required. The job includes providing of material and other consumables as per site requirement and tools and tackles as per requirement.

Connecting the main Bus-Bars of Panel and the incoming sides of New 1000 Amp ACBs by rearrabgement/ modification /extension/addition of Bus-Bar lengths in aluminium construction of similar cross section as per existing as required for retrofitting of ACBs and making the required joints including bending/cutting/shaping of the Bus-Bar as required. The job includes providing of material and other consumables as per site requirement and tools and tackles as per requirement.

Making the outgoing cable connections provisions at outgoing sides of New 1000 Amp ACBs by-rearrabgement /modification/ extension/ addition of Bus-Bar lengths in aluminium construction of similar cross section as per existing and making required the joints including bending/cutting/shaping of the Bus-Bar as required. Connecting the existing cables to the ACBs after checking and restoration of the end terminations. The job includes providing of material and other consumables as per site requirement and tools and tackles as per requirement.

Dismantling the existing doors of the outgoing 2500 Amp ACB. Fabrication, supply and fixing of the new door of suitable site and provisions for the operation of the ACB made with CRCA Sheet duly painted complete with all accessories as required.

Dismantling the existing doors of the outgoing 1000 Amp ACBs. Fabrication, supply and fixing of the new door of suitable size and provisions for the operation of the ACBs made with CRCA Sheet duly painted complete with all accessories as required.

Re-conditioning / Servicing of complete LT panel, all switchgear Chambers, metering chambers, Bus Bar chambers, Cable Alleys etc. including dust blowing and cleaning of all the chambers etc. as per requirement.

Testing and commissioning of the 2500 ACB for operations first at NO load and then at ON load including operation, testing of charging system etc. as per the requirement.

Testing and commissioning of the 1000 ACBs for operations first at NO load and then at ON load including operation, testing of charging system etc. as per the satisfaction of the engineer in charge.

Premier Engineering Company