Installation and commissioning of primary HT switchgears including busbar arrangement for different distribution transformers located at different locations under Bokaro Colliery, BnK Area

Amount

Packing and preparation for transportation of switchgear type OCB at existing location

Loading of Switchgear type OCB from existing location (Hydra/crane for loading shall be provided by the agency)

Transportation of switchgear from Gandhinagar substation/site (Truck/ vehicle to be provided by the agency)

Unloading of switchgear at DD Mines Substation/ site as per instruction of Engineer In-Charge

Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in superstructure above plinth level up to floor V level in all shapes and sizes in : Cement mortar 1:4 (1 cement : 4 coarse sand)

12 mm cement plaster of mix : 1:6 (1 cement: 6 fine sand)

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. All kinds of soil.

Supply of round finished polished Aluminium tube for busbar of dia approx 50mm and thickness 3mm

Fitting and fixing charges for installation and commissioning of Aluminium bus bar

Providing and fixing of pad connector suitable for bus pipe having outer dia approx 50mm

Providing and fixing of T connector suitable for bus pipe having outer dia approx 50mm

Providing and fixing of connector of alloy aluminium pipe to pipe suitable for bus pipe having outer dia approx 50mm

Providing and fixing of support connector suitable for bus pipe having outer dia 50mm

Providing and fixing of Bi-metallic connector

Re-lettering with black Japan paint of approved brand and manufacture.

Handling of HT cable

Arrangement of interlocking of VCB/OCB including all items such as wire and other materials

Supply and fitting of 11KV/3.3KV post insulator

Earthing with G.I. earth plate 600 mmX600mmX6 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7metre long etc. with charcoal/coke and salt as required.

Supplying and laying 25mmX5mm G.I strip at 0.50metre below ground as strip earth electrode, including connection/ terminating with G.I. nut, bolt, spring, washer etc. as required. (Jointing shall be done by overlapping and with 2 sets of G.I. nut bolt & spring washer spaced at 50mm)

Supplying and filling in plinth with Jamuna sand under floors, including watering, ramming, consolidating and dressing complete.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level : 1:3:6 (1 Cement : 3 coarse sand : 6 graded stone aggregate 20mm nominal size)

Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in foundation and plinth in: Cement mortar 1:6 (1 cement : 6 coarse sand)

Supplying and making indoor cable end termination with heat shrinkable jointing kit complete with all accessories including lugs suitable for following size of 3 core, XLPE aluminium conductor cable of 11 KV grade as required : 70 sq. mm

Supply and fitting of suitable size weatherproof and flameproof brass cable gland

Testing of switchgears (functional and safety tests)

Wiring of the control circuit alongwith ferrules and other items

Supervision, overhead and other incidental cost including contractor's profit @10% of estimated cost

Total impact of GST for the purpose of CTC