NIT-03 (2025-26) Item No.4

Renovation/Repairing of (L&T Make) LT panel at Mandawali SPS. (Total 11 No’s of ACB’s 2000 Amp -3 Nos and 800 Amp- 8 Nos) Including all the required safety measures as per the guide lines issued by NHRC / NGT etc. and all the required works, materials, arrangements, tools & tackles, workmanship, etc. and as per the site requirement, remodeling all the damages up to standard if occurred any complete in all respect satisfactorily by carrying out the following works:-Dismantling & taking out ACB from LT panel installed at MANDAWALI SPS removing of defective parts of A.C.B, removing of all incoming & outgoing connection.

Air circuit breaker 3 pole 800Amp. Microprocessor based 50Ka make L&T

Amp. Meter digital Make: L&T

Volt meter digital Make: L&T

Arcing contact 800Amp. Make: L&T

Arcing contact 2000Amp.Make: L&T

Jaw contact 800Amp.Make: L&T

Jaw contact 2000Amp.Make: L&T

Under-voltage trip Make: L&T

Indicating lights RYB Make: L&T

Providing and making connection of links, bends, aluminum bus bar will be of current carrying capacity of 800Amp.electrolytic grade conductivity or as per relevant IS having sufficient cross section area insulated with heat shrinkable PVC sleeve in phase color identification. All hard ware for connection/joints shall be in good quality

Arrangement of incoming / outgoing cable termination by providing & fixing of terminal link of current carrying capacity 800Amp. 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.

Calibration of Protection relays having sensitive earth fault ,over current ,S/C protection with following features-High set elements, highly immune to harmonics, both 1A & 5A CT input in one relay,6out put contacts, Non-volatile memory for trip indication, self-monitoring facility, status indication LED display & sealable front cover to prevent unauthorized access Make: L&T

Fixing all the measuring instruments. at the metering chamber along with complete wiring through 2.5 sq mm single core copper wire including providing and fixing of necessary ferrules etc.

Cleaning of main Bus bar Aluminum, links,bends& insulation of all incoming & out going feeder of panel having ACB with heat shrinkable PVC sleeve/PVC tape throughout in red, yellow & blue color to identify three phases & black. The bus-bar support insulator made of non-deteriorating, vermin proof, non-hygroscopic materials such as SMC/DMC

Cleaning, over hauling of complete ACB 800Amp. in panel, removal of old grease and re-greasing of all movable parts with recommended grease, setting of tripping mechanism, re-wiring of under voltage coil, Fixing of components in place of defective components as required complete with control wiring, with all incoming & out going cable connection with thimbling,

Cleaning, over hauling of complete ACB 2000Amp. in panel, removal of old grease and re-greasing of all movable parts with recommended grease, setting of tripping mechanism, re-wiring of under voltage coil, with control wiring, with all incoming & out going cable connection with thimbling.

Testing & commissioning of panel & allied accessories 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.

M G Traders and Engineers (BID ID -1592311)