NIT NO. 20(M-6)ITEM NO. 07

Dismantling & taking out ACB L&T MAKE from LT panel installed at Punjabi Bagh BPS removing of defective parts, removing of all incoming & outgoing connection.

L&T make Air circuit breakers (ACB), 3200A in frame1, 3 pole, EDO type WITH mtx1.5g 75 KA(with LSING protection & display) with both side terminal adapter

Providing /fixing and making connection of including links, bends, aluminum bus bar will be of electrolytic grade conductivity of current carrying capacity 3200Amp. or as per relevant IS having sufficient cross section area insulated with heat shrinkable PVC sleeve in phase color identification. The bus bar support insulator shall be of class F insulation made out of non-hygroscopic material as SMC/DMC. All hard ware for connection/joints shall be in high tensle.

Arrangement of incoming / outgoing cable termination by providing & fixing of terminal link of current carrying capacity 3200Amp. With phase separator I. Removable cable gland plate to be provided for each cable entry with cable gland. Making connection of both incoming & out going side as required with proper insulation.

Fixing of the ACB in the existing L T Panel Board including providing & fabrication & fixing of the base frames of suitable sizes for ACBs in the chamber.

Indicting lamps

Under voltage trip device (UVT) for above ACBs.

Panel door lock

Making tripping system in INCOMER against various fault by P/F of Microprocessor based over current /earth fault relay with data recording & display Make: L&T

Making tripping system in Outgoing Motor breaker against various fault by P/F of protection Relay with display having data recording & Thermal over load, short circuit, earth fault, Phase loss, phase unbalance, phase reversal, under current & locked rotor protection M10 type Make: L&T

Cleaning of incoming & outgoing bus bar & complete panel horizontal bus bar Aluminum & insulation with heat shrinkable PVC sleeve/PVC tape throughout in red, yellow & blue color to identify three phases & black for neutral

Cleaning of panel removal of old grease and re-greasing of all movable parts with recommended grease, setting of tripping mechanism, wiring of under voltage coil, complete cleaning of ACB with making all incoming & out going cable connection with thimbling.

Testing & commissioning of ACB as per required parameters with relevant IS. testing of the panel prior to switching on as Continuity and earth testing, Meggaring of all equipment’s for phase to phase, neutral to body, neutral to earth and phase to earth.

SS ENTERPRISES (BID ID -1558704)