creation of 250 KVA electric sub station and its allied works at CPS Patoli brahmana under UT capex budget

Amount

Creation of 250 KVA electric sub-station at CPS Patoli Brahmnna by way of tapping the local feeder of Patoli Brahmna. Erection of 10 no. 9 Mtrs. HT steel tubular poles. Shifting of poles from the stacking place to the site of work. Excavation of pit, fixing of top insulator fitting, cross arms, clamps, packing cross bracing etc. The poles are to be set in good hard earth. The depth of pit shall be one sixth the height of the pole. Poles must not be erected along the edge of cutting or embankments or where the soil is liable to be washed away, unless, special precautions are taken to ensure durable foundation when setting the pole. The pit shall be of ample size to allow easy entrance of the pole and base plate without any damage to it. After pole is erected vertically, the pit is to be refilled with the excavated earth and properly rammed. The erection cost of single or double pole structures, tubular poles, stay sets and pipe or plate type earthing is inclusive of excavation of pit refilling of excavated earth and cost of coke & salt in earthing arrangement as specified. Steel Tubular Poles or all the steel mounting shall be given one cost of approved red oxide paint and two coats of approved aluminium paint. There should be sufficient interval between every cost of painting in order to allow for drying. The bolts and nuts shall be dipped in anticorrosive oil before insertion and all over lapping surface of steel should be given a fine coat of red oxide paint before bolting. Concreting of all steel tubular poles should be done in proportion of 1:3:6. After concreting, one finishing coat of cement should be applied on surface. Stringing of standard ACSR DOG conductor including the erection of necessary HT strain and pin insulators, jumpering & binding wire jointing etc. Appropriate, tools should be used and proper scientific methods are to be applied to protect against cuts, scratches or kinks. While executing this work equipments & tools like turn table or draw vice etc, should be arranged by the contractor. For stringing of ACSR DOG conductor, aluminium or wooden pulley must be used for supporting contact on poles. Generally 25-30 meter span should be kept on HT poles. All conductor earth wire and stay wire must be tight. All road crossing must be provided guarding arrangement and minimum 22 ft. clearance must be kept between conductor and road level. Creation of 250 KVA electric sub-station by providing and fitting of 250 KVA electric transformer. Construction of the concrete block by way of excavation of pit of size 6’ x 6’ x 1’ and disposal of excavated earth from sub-station. Then laying of concrete foundation block of size 6’ x 6’ x 4’ by way of making the surface even from below the ground level by filling the concrete in the ratio 1:2:4. The entire block as one unit is to laid in such a way that it can withstand the load of HT transformer of 250 KVA rating when topped up with T-oil without causing any defect to the transformer as well as to the block itself. Then lifting of 250 KVA transformer from its stored position with the help of long boom crane and manual labour and placing the transformer on the block when the block is properly dried up for seven days and ready for bearing load. The job also includes making HT and LT side connections of the transformer by way creation of electric sub-station of 250 KVA. Erection of HT & LT poles along with laying of conductors as per site requirement. Job also includes providing and fitting of 11 KV knife edged link set, 11 KV HG set, 11 KV A LA set, 11 KV pin insulators, ACSR conductors, dogs for HT load / jumper and fuse set from electric poles of 250 KVA electric sub-station. Job includes providing / fitting of single core LT Aluminum cables to be laid between LT bus bar and the transformer. Complete job includes cost and carriage of electric transformer, cost, carriage and erection of tubular poles, DOG conductor, pin insulators with pins, channel for cross members, nuts and bolts, hydra crane hire charges for erection of poles, JCB hire charges for excavation of earth, earthing material for poles, cost of paint, disposing of surplus material at a permitted site, labour charges etc. Complete job.

SUNIL KUMAR SURI CONTRACTOR

JAY AAR ENTERPRISES

ROYAL ENGINEERS AND CONTRACTORS