MAINT REPAIR TO ELECTRIC SUPPLY SYSTEM ( HT LT) AND DEHYDRATION OF TRANSFORMER OIL AND CONNECTED WORKS AT AFAC UNDER AGE (I) (AF) COIMBATORE

Amount

Excavation in trenches not exceeding 1.5 m wide and n.exc. 1.5 m deep and getting out in hard/dense soil for laying of UG cables

Returning, filling in, including spreading, leveling, watering and well ramming in layers n. exc. 25 cm thickness with hard/dense soil

Removing excavated materials (soils) to a distance not exc 50m and depositing where directed at a level not exc. 1.5 m above the starting point

Earth cushioning to UG cables using excavated soil riddled by using large sieve to separate the composite particles/roots etc and refilling in trenches Note: Punned thickness will be measured for payment.

Supplying and laying reinforced precast concrete cable cover, HV, Type 1, flat, size 300mmx l80mm x 40mm all as specified and as directed.

Supply and laid well burnt old size bricks sub-class 'B' designation 75 for cable protection, brick shall be laid dry flat as width of brick eqals to the length of cable and the gap between adjacent brick shall not exceeded 10 mm, complete all as specified and as directed.

M&L in replacement for lightning arresters in repairs, expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo Amp suitable for 11000 V.

Supply & Install in replacement GOD triple pole in repairs, mechanical operated mounted on insulated steel frame, 3 insulator type suitable for vertical fixing with operating mechanism work from ground level for current rating upto 200AMP.

Material & Labour in replacement for pin type porcelain, vitreous, white, brown, or green insulator including one galvanised and steel spindle, two galvanised iron washers and one galvanised iron nut, 150mm height, 150mm dia for 11000 V grade.

Material & Labour in replacement for Disc type insulator, porcelain, vitreous 145mm high and 255mm dia ball and socket type, white, brown or green 19121Single disc assemblyassembly for tension with tension clamps for conductors,working pressure 11000 volts

Material & Labour in replacement for XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured,electric power cables (heavyduty) with aluminium conductor, 11000 volts, grade multistrand cross sectional area 3 core185 sq. mm

Material & Labour in replacement for XLPE insulated, armoured heavy duty electric cable with aluminium conductor, multi stranded, 1100 volts grade, cross-sectional area 3.5 core x95 Sqmm

M/L in replacement for XLPE insulated, armoured heavy duty electric cable with aluminium conductor, multi stranded, 1100 volts grade, cross-sectional area 3.5 core x50 Sqmm

Material & Labour in replacement for cable Jointing Kit for HT 11 KV grade cable (Earthed) for indoor termination heat shrink type joint complete with jointing materials and acessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 sqmm all as specified.

Material & Labour in replacement for Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size120 to 185 sqmm all as specified.

Material & Labour in replacement for Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 185 sqmm all as specified.

Material & Labour in replacement for straight through cable jointing kit heat shrinkable type joint for 1100 volts grade cable complete with jointing material and accessories suitable for 3.5/4 core XLPE/PVC insulated armoured aluminium conductor cable for the size 50 to 95 sqmm

M&L for Danger notice plate of 1.6mm thick mild steel, vitreous enameled white, with letters, figures and conventional skull and bones in signal red colour and fixed with MS clamps, bolts and nuts of approved size for HT, 25x20cm.

Material & Labour in replacement MCCBs 415V, 16KA, 3 Pole of 100 Amps capacity complete.

Material & Labour in replacement MCCBs 415V, 16KA, 3 Pole of 63 Amps capacity complete.

Material & Labour in replacement MCCB 4 Pole, 415 V, Adjustable type, 200 Amps with breaking capacity 35 KA complete.

Supply and laying GI pipe light grade 50mm bore including all type fitting such as bends, elbows, tee etc fixed on walls/to poles/laid in trenches as cable protection.

All as per item No 22 above here in before but 80 mm dia pipe.

Cleaning the vegetation around two/four pole strcuture & transformer yard, sub station and generator rooms etc all as specified and directed

M&L for dehydration of transformer oil with mobile stream line transformer oil filtration plant at site with all accessories connected to transformer and carrying out filtration of oil to desired dielectric strength i.e. not less than 40 KV at 2.5 mm gap . NOTE-Test certificates shall be submitted for before and after filtration for dielectric strength on the proper format

Supply and Fill new transformer oil conforming to IS 335/1983 for topping up/replacement by stream line filter. Make Power Oil/HP/BP/Electrol.

M&L for carrying out lab test for acidity of transformer oil for various transformers and submission of test reports on the proper format as specified and directed

Replacement of old existing unservicable breather assembly with new one complete along with silica jel in transparent container with metallic top & bottom cup with pipe entry of 15/20 mm dia, including air oil bath tub.

Replacement of existing unserviceable silica jel with new crystal clear silica jel for the breather of transformer all as directed .

Material & Labour for HT cable fault locator from TNEB on hiring basis to find out the fault in HT cable of size 120/185 SQMM in any situation /location with all required accessories and manpower including excavation in any surface and making good with existing finishes , necessary permissions obtained from local authorities if required at site as directed by Engr-In-Charge.

Earthing complete with galvanized steel earth plate electrode 60cm x 60cmx 6 mm thick buried directly in ground (earth pit not less than 2.25 meter deep below ground level) with top edge of the earth plate not less than 1.5 meter below normal ground level connected to galvanized iron strip 32 x 6mm as earthing lead by means of bolt and nut, check nuts and washer of galvanized iron or steel all as shown in electrical plate No 5 of MES Schedule part I with and including excavation & earth work in any type of soil, providing charcoal dust and common salt upto 15 cm above top edge of earth plate, construction of PCC pit in cement concrete 1:3:6 type C-1 with 40 mm thick RCC 1:2:4 type B-1 reinforced with 8 mm dia MS deformed bars @ 100mm center to center both ways watering arrangement with funnel and wire mesh and watering pipe of 20mm dia GI light grade and 40mm dia light grade pipe for earth lead protection and testing on completion complete all as specified and directed.

Saket Enterprises