WORK

Amount

Following detailed work is to be done for installation of ACDB Panel after Reconditioning in 33 KV Switchyard of 220 KV S/S, Sarojini Nagar with cost of all men, material and Equipments. except power cable and earthing flat which shall be provided by department:-

Following works are to be done for the proper Reconditioning of the ACDB Panel- a) Repair of the locking arrangement of the ACDB Panel. b) Proper Rubber Beading around the ACDB Panel. c) Replacement of damaged cover sheet of old ACDB Panel of size ( 1.6×1.2×0.9) mtr. with 16 SWG sheet duly painted with powder coated Epoxy Gray Paint from inside and outside.

Supply and Fixing of following Electrical Items have to be done inside the ACDB Panel-

415 V, 630 A, 4 Pole MCCB of L&T/Havells/Schneider/ standard make conforming to IEC60947-2, with rated short circuit breaking capacity of 50 KA, making capacity of 105 KA, total opening time less than 10 msec, IP class of IP40, for Protection from faults/short circuits.

Red, Yellow and Blue Color LED Type Phase Indicators

Construction of base foundation for Grouting of ACDB Panel in 33 KV Switchyard by mixing first class brick ballast, cement and coarse sand in the ratio 1:4:8. The work also includes Earthing of the ACDB Panel with 25x6 mm MS Flat Strip( to be provided by the Department) and Painting of the Earthing Strip with the help of Green Color Paint Berger Make. All labour, material( except Earthing Flat to be provided by department) and T&P shall be arranged by the contractor.

Laying of 3.5 core 240 sq.mm, aluminium power cable below the minimum of 50 cm from ground level through the cable trench to be made with first class brick and filling of sand after laying of cable and covered by brick as per technical specifications. Afterwords, levelling and ramming of earth including installation of cable route marker at span of 10 metres. The cable has to be laid between 33 KV Switchyard and Staff Colony LT room. cable shall be provided by department.

Supply and fixing of 400 A TPN Switch 415 V, 3 Phase, Interior mount type-FB of L&T/Havells/Schneider/standard make, including mounting plate of suitable size and other accessories for fixing the same at Staff Colony LT Room.

The following works have to be completed for proper termination of 240 sq.mm cable inside Staff Colony LT room and newly installed ACDB:- a)Termination of 240 sq.mm cable at the terminal of 630 A Changeover Switch. b) Opening of the Existing LT cable connection of 11/0.4 KV Transformer and Termination of the LT cable on the second incomer of above described Changeover Switch. c) Proper Termination of 240 sq.mm cable on the output side of the Changeover Switch and terminating the other end of the cable on the LT Bus Bars through 400 A TPN Switch. The work also includes grouting of angle on the wall inside the Staff Colony LT room for proper Erection of 400 A TPN Switch and 630 A Changeover Switch.Proper Lugging of the cable must done. All labour, material and T&P to be arranged by the contractor. 630 A Changeover Switch will be Provided by the department.

Following works are to be done for Strengthening of the Bus Bars of Existing ACDB panel installed for 630 KVA 33/.4 KV T/F-I- Fabrication of 04 Nos. Aluminium Bus-Bars of size (75x10) mm (with current carrying capacity of 900 A) inside the AC Cubicle Box of already installed 630 KVA, 33/0.4 KV, S/S Transformer-I for R, Y, B & Neutral Phase by opening of the existing 400 sq.mm cable connections and dismantling of the old Aluminium Bus Bars.The work will be also include drilling of holes suitable for cable of size 240 sq.mm & 400 sq.mm inside the AC cubicle box with proper glanding. All men, material and T&P to be provided by the contractor.

Supply and Fixing of 0.4 KV, 500 A Fuse Set Box on the LV Side of 630 KVA, 33/0.4 KV T/F-I and T/F-II. The work includes proper installation of Iron Angles so as to suit the installation of Fuse Set Box. The Fuse must be of standard quality with current carrying capacity of 500 A. All men and material has to be Provided by the Contractor.

Laying of 400 sq.mm. Cable between 630 KVA 33/0.4 KV T/F-II and ACDB Cubicle.The work also includes Termination of 400 sq.mm cable on the LT side of the Transformer (on the 500 A Fuse Set Arrangement) as well as on the Bus Bars of the ACDB Panel thbrough 630 A MCCB. The work includes proper lugging of the cable, proper glanding, modification in the existing AC cubicle box bus bar to suit the termination of 400 sq.mm cable. All labour, material (except Earthing Flat to be provided by department) and T&P shall be arranged by the contractor. power cable shall be provided by department.

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