REPAIR AND MAINTENANCE OF EXTERNAL ELECTRIC SUPPLY WORKS AND OTHER CONNECTED ITEMS OF ARMY UNITS OF DHARMUND UNDER AGE (I) BHALRA

Transporting to burnt out transformer for repair to ciivil workshop, and any type of T& P will be required for shifting of transformer will be provided by Contractor and Strip opening of transformer and removing the top cover for repair, and taking out the burnt out core alongwith HT/LT coil (windings) assembling the core after replacement of HT/LT coils heating varnishing, testing and housing accessories in transformer body and connection up filling in dehydrated transformer oil and connection with existing electrical system HT/LT and commissioning complete on load of capacity not exceeding 100 KVA.(Transformer oil will be measured and paid separatily).

De-hydration/ filtration of transformer oil by hiring on line filtration plant to achieve di-electric strength not less than minimum 50 KV including following work services :- (a) Removal of all suspended particles such as dust, rust, scales, collided carbon oxidation sludge etc upto < 1 micron. (b) De-hydration of transformer oil under vaccum. (c) Circulation of heated oil and filling of treated oil in transformer tank. (d) Top up the transformer oil upto the level NOTE : (i) Contractor shall use the vehicle mounted filtration plant with new suitable size heavy duty hose pipe. (ii) The transformer oil required for replacing/top up shall be measured and paid separately as "Supply only" (iii) Conducting field testing of di-electric strength of the transformer oil before and after filteration (iv) Checking the megger/earth resistance values with battery operated megger of 5 KV

M&L for Filling / topping of new transformer oil having dielectric strength not less than 60 KV complete including centrifuging of oil (if required) up to getting dielectric strength not less than 60 KV all as specified and directed by the Engineer-in-Charge

Supply and fixing brass terminal stud 12 mm with nuts, check nut, oil seal and washer for HV side of transformer up to 100 KVA transformer complete all as specified and as directed.

Supply & fixing in replacement switch air break, gang operated, triple pole, mechanically operated suitable for horizontal or vertical mounting, fixed type, mounted on insulator and steel frame with operating mechanism worked from ground level, provided with locking arrangement for operating handle, consisting of MS channel, HT post type insulator, contacts of copper alloy, high pressure, heavy duty contact assembly, operating rod of 25mm dia GI pipe medium grade, drop out expulsion assembly of phases fuses etc conforming to IS:1018 of 1972 with continuous current rating with 15 insulators of current rating upto 400 amps 11000 volts grade, complete all as specified & directed.

Supply & fixing in replacement aluminium conductor steel reinforced (ACSR) of any size for HT/LT overhead lines on steel tubular poles/PCC poles, stretching without kinks and bends including binding wire suitable cross section (but not less than 16 SWG), complete all as specified & directed.

M&L Cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of paint, complete all as specified & directed.

Supply and fix in repair HT Aeriel Bunched cable 11000 volts grade, stranded and compact aluminium phase conductor of size 3 core x 95 sq mm + 1 x 70 sq mm bare messenger conductor with aluminium alloy. The phase conductor shall be insulated with XLPE (Cross Liked Polyethylene) and confirms to IS : 6474-1971, insulation colour shall be black. Three power cables shall be suitably twisted around bare AAAC steel messenger. All as confirm to IS : 14255-1955 including suitable size of MS clamps, nuts, bolts and MS hooks to be fixed on existing pole for cable hanging complete all as specified and directed by Engr-in-charge.

Supply Laying, jointing with suitable thimble and cable gland, testing and commissioning or fixing in Wall or passing through pipe, 1100 volts grade heavy duty cable with XLPE insulated screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty ) with aluminium conductor cable of size 95 Sqmm 3.5 core , 1100 volts, grade including taking down UNSV cable all as specified and as directed.

Supply Laying, jointing with suitable thimble and cable gland, testing and commissioning or fixing in Wall or passing through pipe, 1100 volts grade heavy duty cable with XLPE insulated screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty ) with aluminium conductor cable of size 50 Sqmm 3.5 core , 1100 volts, grade including taking down UNSV cable all as specified and as directed.

Supply Laying, jointing with suitable thimble and cable gland, testing and commissioning or fixing in Wall or passing through pipe, 1100 volts grade heavy duty cable with XLPE insulated screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty ) with aluminium conductor cable of size 16 Sqmm 2 core , 1100 volts, grade including taking down UNSV cable all as specified and as directed.

(b) Spacer for three wire

(c) Spacer for four wire

(d) Spacer for five wire

(b) 16 Sqmm

(c) 25 Sqmm

(d) 50 Sqmm

(e) 70 Sqmm

(f) 95 Sqmm

(g) 120 Sqmm

(h) 150 Sqmm

(j) 240 Sqmm

ium grade finish to the remaining external surface over one coat of primer complete including taking down old unserviceable pole all as specified and as directed.

Excavation of soft/loose soil in trenches not exc 1.5 meter wide & not exc 1.5 mtr in depth: for foundationetc or for manholes, laying of pipe in any type of soil and getting out complete all as specified

M & L for dry sand cushioning to underground cables with 8cm thick before laying of cables and 15cm thick after laying and stretching of cable all as specified and directed .

Cutting existing road surfaces or hard standing 0.45 mtr depth and 0.3 mtr width (22 CM thick comprising bituminous topping) for laying of pipes/cables and making good to the disturbed surfaces to match with existing complete all as specified and directed. Note : Rate quoted by the contractor deemed to be inclusive of PCC 1:2:4 to be required to making good the disturbed surface to match with existing.

M & L for Cement concrete 1:4:8 type D-2 using 40mm graded stone aggregate in foundations, filling and mass complete all as specified and directed by Engr-in-charge.