MAINTENANCE TO HT 11 KV PANELS, TRANSFORMERS, HT VCB/OCB, HT and LT CABLING NETWORK, REPAIRS TO LT PANEL AND ALLIED CONNECTED WORKS AT PHASE - I AND FAR FLUNG AREA OF GE(I) RndD (WEST), BANGALORE

Amount

Excavation in trenches not exceeding 1.5 m deep and not exceeding 1.5 m wide and getting out in hard / dense soil all as directed.

Returning and filling in, soils, including spreading, leveling, watering and well ramming in layers not exceeding 25cm thick all as directed.

Removing excavated surplus soil to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5 m above the starting point all as directed.

Taking down existing 11 KV grade cable Supply and laying New XLPE insulated, screened, bedded galvanized steel strip / wire armoured heavy duty with aluminum conductor, of cross sectional area 185 sq mm 3 core with cable protection works (as applicable) laid in trenches/ ducts/ fixed on pole/ wall/ laid under road/ path/ culvert/ drains/ encased in pipe, including necessary lugs, jointing and testing complete all as specified and as directed.

Taking down existing 11 KV grade cable, Supply and laying New XLPE insulated, screened, bedded galvanized steel strip / wire armoured heavy duty with aluminum conductor, of cross sectional area 95 Sq mm, 3 core with cable protection works (as applicable) laid in trenches/ ducts/ fixed on pole/ wall/ laid under road/ path/ culvert/ drains/ encased in pipe, jointing and testing complete all as specified and as directed.

Taking down existing 1100 Volts grade cable and laying only new XLPE insulated cable, screened, bedded galvanized steel strip/wire armoured heavy duty with aluminium conductor of cross sectional area 120 to 185 Sq mm, 3.5 core with cable protection works (as applicable) laid in trenches/ducts/fixed on pole/wall/laid under road /path/culvert/drains/encased in pipe, including necessary lugs, jointing and testing complete all as specified and as directed. Notes for Sl Item Nos 6 to 8 :- Cables will be issued under Schedule 'B' free for laying only or will be ordered through item nos. 9 to 13

All as per Serial Item No 6, here-in-above, but 3.5 Core 50 to 95 Sq mm with cable protection works (as applicable) laid in trenches / ducts / fixed on pole / wall / laid under road / path / culvert / drains / encased in pipe, including necessary and testing complete all as specified and as directed.

All as per Serial Item No 6, here-in-above, but 3.5 Core upto 35 Sq mm with cable protection works (as applicable) laid in trenches / ducts / fixed on pole / wall / laid under road / path / culvert / drains / encased in pipe, including necessary and testing complete all as specified and as directed.

Supply only , with XLPE insulated, aluminium conductor stranded conductor served with an inner sheathing of PVC tape armoured with galvanised steel wire or tape and overall PVC sheathed 16sq. mm 4 Core nominal cross section in service connection complete all as specified and directed by Engr - In - Charge.

All as per item No 9 here in above but 35 Sqmm x 3.5core all as speicified

All as per item No 9 here in above but 50 Sqmm x 3.5core all as speicified

All as per item No 9 here in above but 70 Sqmm x 3.5core all as speicified

All as per item No 9 here in above but 120 Sqmm x 3.5core all as speicified

Disconnecting the GOD of any capacity and make from main power supply after taking proper shut down and carrying out repairing of unserviceable GOD by taking down, dismantling & removing dust, carbon deposits or any other substance and replacing worn out parts of fixed contacts-03 Nos, moving contacts-03 Nos, reassembling complete GOD, re installing in position after applying petroleum jelly on moving and fixed contacts complete all as specified and as directed.

Taking down unserviceable air brake switch, Supply and fix, new switch, air brake, gang operated 11 KV, HT Triple pole, mechanically operated, mounted on insulator and steel frame, with operating mechanism worked from ground level, for current rating up to 200 amps complete all as specified and as directed.

Taking down old drop out fuse and supply and fixing Drop out fuse with fuse links and wire fuse complete of capacity HT 11 KV 200 Amps 10(KA) station class complete with fixing clamps, bolts, nuts and washers fixed in repairs complete all as specified and as directed by Engineer-in-charge.

Supply and Fixing Lightning arrester Expulsion type of capacity HT 11 KV 65 (KA) station class complete with fixing clamps, bolts, nuts and washers fixed in repairs complete all as specified and as directed by Engineer-in-charge.

Repair / servicing to HT panel of vacuum circuit breaker 11 KV rating of capacity current rating up to 800 A by replacing defective/wornout part, adjustment of gaps for smooth operation all as detailed below:- (a) Cleaning of VCB with air blower and removing dust particles (b) Cleaning of insulating places of VCB by using CTC/CRC/Thinner as required and recommended by the manufacturer. (c) Checking the arcing contact gap of vaccum intrupter and readjust as recommended if gap exceeds the permissible limits. (d) Cleaning the main contacts to remove carbon or any other unwanted particles. (e) Dismantling and cleaning the insulated surfaces and arc barrier with CTC and CRC. (f) Checking/repair replacement of all electrical wiring for electrical/manual operation of panel including measuring IR values. (g) Checking of all nuts/bolts, springs, levers, latches, connnectors etc and adjustments as required and recommended by the manufacturer. (h) Recording IR values of CTs and PTs. (j) Cleaning of bus bar spout. (k) Checking of all moving parts for proper functioning of VCB and adjustment as per manufacturer recommendations.

Servicing and Painting of two/four pole structure, mild steel channels & supports with one coat of aluminium paint and colour paint as per the existing colour of the equipments including colour code for RYB to indicate the colour code for body earthing & lighting arrestor complete including taking proper shut down & greasing the GOD switch & tightening of all bolts & nuts and replacement of ACSR conductor and PVC sleeves , worn-out lugs, PG clamps and HT fuses in the structure as required at site including two coats of white wash for masonry plat form complete and one coat of synthetic enamel paint for weld mesh, removing of Weeds / Plants inside the yard and Cleaning and painting of Chain link fence for transformer area complete all as specified and as directed.

Supplying and spreading 20 mm graded stone aggregate inside the fencing area of transformer all as directed .

Supplying and spreading 40 mm graded stone aggregate inside the fencing area of transformer all as directed .

Supply only ROUNDUP HERBICIDE CHEMICAL for grass killing agent in E/M Installation maintenance for all as specified and directed.

Material and labour for laying of reinforced precast concrete cable cover, class HV, type 1 flat size 300mm x 180mm x 40mm (ISI marked) all as directed and specified

Screening excavated earth (passing through 12 mm square mesh), laying riddled earth in trenches for cable protection, under and above Cable all as specified in SSR Part - I (Clause No 19.75) and as directed by Engineer-in-Charge. Note : Punned thickness of riddled earth of 18 cm will be measured and paid.

M & L for PCC 1:3:6 type C1 using 20mm graded stone aggregate for coping of poles/plinth blocks of HT poles etc including fair finishing the exposed surfaces even and smooth without using extra cement including necessary form work complete all as specified and as directed.

Taking out old unserviceable joints including Supplying, jointing new outdoor termination heat shrinkable new jointing Kit suitable for 11 KV, XLPE cable of size 3 core 185 Sq mm, testing, complete all as specified and as directed

Taking out old unserviceable joints, Supplying, jointing new indoor termination, heat shrink type joint, suitable for 11 KV (earthed) grade XLPE armoured aluminium conductor cable of size 3 core 185 Sq mm, testing, complete all as specified and as directed

Taking out old unserviceable joints, Supplying, jointing new outdoor termination, heat shrink type joint, suitable for 11 KV (earthed) grade XLPE armoured aluminium conductor cable of size 3 core 95 Sq mm , testing, complete all as specified and as directed

Taking out old unserviceable joints, Supplying, jointing new indoor termination, heat shrink type joint, suitable for 11 KV (earthed) grade XLPE armoured aluminium conductor cable of size 3 core 95 Sq mm, testing, complete all as specified and as directed

Taking out old unserviceable joints, Supplying, jointing new Straight through cable jointing kit suitable for 1100 V, LT UG XLPE cable of size 3.5 core upto 50 Sq mm, testing, complete all as specified and as directed

Taking out old unserviceable joints, Supplying, jointing new Straight through cable jointing kit suitable for 1100 V, LT UG XLPE cable of size 3.5 core 70 to 185 Sq mm, testing, complete all as specified and as directed

Supply and fix, Aluminium lugs suitable for cable of size 70 to 240 Sq mm complete all as specified and as directed.

Taking down unserviceable cable protection pipe, Supply and Fixing on walls / pole with clamps / laid in trenches, 40 mm bore Galvanized iron tubing, light grade, as cable protection, complete all as specified and as directed.

Taking down unserviceable cable protection pipe, Supply and Fixing on walls / pole with clamps / laid in trenches, 50 mm bore Galvanized iron tubing, light grade, as cable protection, complete all as specified and as directed.

Taking down unserviceable cable protection pipe, Supply and Fixing on walls / pole with clamps / laid in trenches, 100 mm bore Galvanized iron tubing, light grade, as cable protection, complete all as specified and as directed.

Material and labour, Galvanized earth strip of size 25 x 4 mm earth continuity or main earthing lead fixed to Wall/ trenches /ducts through Galvanized iron pipe including necessary clamps, nuts, bolts, etc., and connecting up complete all as specified and as directed.

Program the existing numerical relay any model and type for over load and earth fault settings with respect to trip settings of HT panels sub station or other sub stn in such a way that faults are arrested locally including arranging or cracking of existing password all as required for smooth functioning of the HT panels complete all as specified and directed.

Supply and fix in replacement of unserviceable relay any type and make with Numerical relay microprocesser based model including retrofiting to the existing panels and programming the relays for overlaod and earthfault setting with respect to trip settings of HT panels Sub station or other sub station insuch a way that fault are arrested locally the tip testing carry over suitable with 66KV sub station/other complete all as specified and directed.

Supply and fix in repairs, CT ratio coil 600/5 Amps of 230 volt (Set of 3) complete all as specified and as directed.

Supply and fix in repairs, CT ratio coil 400/5 Amps of 230 volt (Set of 3) complete all as specified and as directed.

Supply and fix in repairs, Neon indicator lamps RYB 3 phase (set of 03) complete all as specified and as directed.

M & L for detection /localisation of fault in HT 11 KV UG cable of any size and length , by means of cable fault locator including pinpointing the exact location of fault retrieving the exposing damaged portion carefully for further inspection and repairs complete all as specified and as directed by Engr - in - charge Note :- (i) Charges of cable fault equipment carried out by BESCOM/other agencies are deemed to be included in the item rate quoted (ii) Contractor on demand by dept has to arrange the above equipment without any delay failing which penalty will be levied by the dept.

Suppy, install, testing and commissioning of potential transformer (PT) 11 KV/110 V, withdrawable type with automatic shutters complete as per the existing PTs of VCBs at site all as specified and directed .

Supply only HT PT fuse of capacity 11 KV - 3 Amps all as specified and as directed.

Supply only HT PT fuse of capacity 11 KV - 6 Amps all as specified and as directed.

Supply only fixed Contacts of VCBs, all as specified and as directed.

Supply only moving contacts of VCBs all as specified and as directed.

Supply and fix, Transformer breather assembly with silica gel filled including removing the unserviceable breather unit of 500 gram capacity complete all as specified and as directed.

Supply and fix, Transformer breather assembly with silica gel filled including removing the unserviceable breather unit of 1000 gram capacity complete all as specified and as directed.

Supply only ISI Marked transformer oil in sealed drum and topping up of transformer oil in transformers and HT OCB's after filtration with 50 to 60 KV/min of die-electric strength of oil by high vacuum oil filtration plant complete all as specified and as directed.

Repair /servicing of RMU unit any type /capacity including dusting, cleaning , greasing ,tighting the nut /bolt of moveable and unmovable parts of the complete RMU unit, and replacement of 01 no shock absorber of door assembly, checking loader/charging assemblyy all as specified and directed.

Supply and fix, HT brass spindles with porcelain bush of power distribution transformer of capacity upto 500 KVA including taking out unserviceable spindle complete all as specified and as directed.

Supply and filling up in replacement of Dehydrating agent silica gel superior quality to transformer's breather assy complete all as required and diercted.

Material and labour for detection of any type of fault in HT underground Line of any size and core. (laid in soil in plain or bushy area) with the help of HT Meggar. Seggregation of faulty span by meggering and making span serviceable by repair of cable or replacement of cable. Notes:- 1. Detection of one fault in faulty span will be measured as Each Job. 2. Earth work and taking out will be measured seperately. 3. Material for repair and replacement will be measured saperately.

Supply and fix, MCCB, 4 pole, 415 volts, 400 amps, 36 kA breaking capacity including taking out old unserviceable MCCB complete all as specified and as directed.

Supply and fix, MCCB, 4 pole, 415 volts, 250 amps, 36 kA breaking capacity including taking out old unserviceable MCCB complete all as specified and as directed.

Supply and fix, MCCB 4 pole, 415 volts, 200 Amps, 36 KA breaking capacity including taking out old unserviceable MCCB all as specified and as directed..

Supply and fix, MCCB 4 pole, 415 volts, 160 Amps, 36 KA breaking capacity including taking out old unserviceable MCCB all as specified and as directed..

Supply and fix, MCCB 4 pole, 415 volts, 25 to 100 Amps, 16 KA breaking capacity including taking out old unserviceable MCCB all as specified and as directed..

Servicing and repairing of LT Air Circuit Breaker by drawing out ACB mechanically from cabinet, cleaning entire parts, greasing, oiling, tightening of nuts/bolts and replacing unserviceable spare parts and reassembling the same, complete all as specified and as directed. Note : Spare parts of following items shall deemed to be included in quoted rate :- i) Under voltage release coil 230 V - 1 No ii) Shunt release Coil 230 V - 1 No, iii) Closing Coil 230 V - 1 No

Material and labour for replacement of Danger notice plate of 1.6mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bones in signal red colour and fixed with M.S. clamps, bolts and nuts of approved size, for HT, 25x20cm

Material and labour for in replacement Anti-climbing device,spikes type fabricated out of M.S. bars (round, square and flat) including nuts, bolts, washers and welding in two halves made to shape to suit the cross section of the pole

Supply and fix cable route indicator for HT/LT encraved as 11/1.1KV in metal including necessary excavation and concreting for fixing, placing each indicator at every 40 metres gap all as specified and directed.

Dismantling insulators of any type, any size all as directed

Fixing of Pin type insulators of 100mm high, 115mm dia porcelain, vitreous, white, brown or green insulators for working pressure 11000 volts complete all as specified, required at site or directed.

Fixing only Disc type porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150 mm height, 150 mm dia for 11000 volts grade

M&L for replacement of Jumper for HT four/two pole structure including HT sleeves with colour coding all as specified and directed.

M&L for polimeric Pin type,insulator including and connected acessaries for fittng 11000 volts all as directed.

M&L for polimeric Disc type insulator, any type assembly for tension with tension clamps for conductors, working pressure 11000 volts all as directed.

Opening the transformer cover along with the conservator by removing the nuts bolts then after removing the internal H.T. & L.T. connections by taking them out by removing studs, bushings, taking out the core-winding assembly out of the tank, removing out burnt HV and LV windings from the core assembly, cleaning of core assembly with CTC including necessary repairs for the unserviceable transformers having ratio 11 / 0.433 KV, draining & decanting of burnt transformer oil and cleaning of sludge deposited in the tank with CTC for the transformers. Rewinding of HV and LV coils with suitable size super enamelled copper wire/ strip widing material measured separately (As Existing) having suitable class insulation material. Heating of core winding assembly in hot chamber for 48 hours and removing all the moisture present in it, removal of leakage of tank if any by welding, refilling transformer oil to tank, after putting the core-winding assembly into the tank, reassembling making the internal H.T. & L.T. connections by fixing the studs, bushing, fitting the top cover by replacing cork sheet gasket along with conservator, testing the transformer in the workshop duly filled with oil, all as directed by Engineer-in-Charge for transformer upto 500 KVA Note :- Replacement of unserviceable items such as HT/LT bushes, HT/LT stud , nut , bolt and washers shall be included in the quoted rate. Transformer oil with die electric strength not less than 40 KV either new or filtered shall be filled and shall be measured and paid seperately under respective item.

All as per item 72 above but for transformers above 500 KVA upto 750 KVA

Supply and replacement of super enamelled copper winding wire/ strip of any size for H.T. coils of transformers all as specified.

Supply and replacment of copper winding strip of any size for L.T. coils of transformers including providing insulation all as required.

Disconnecting the power distribution transformers of any capacity from main power supply and carrying out oil filtration through high vacuum oil filtration plant, extracting the moisture content, dust, sludge and carbon deposits from oil and bringing to 40 KV/min die electric strength through 2.5 mm gap of testing electrode including carrying out acidity and di-electric strength test before and after oil filtration and submmission of test certificate complete all as specified and as directed by Engineer-in-charge.

Painting of Transformer of Capacity above 50 to 315 KVA with spary pump, after removing dust and cleaning the oily portion from transformer , painting complete body and writing SM/MES No. and Capacity,Make etc on It as per directed by Engr in charge.

Painting of Transformer of Capacity above 315 to 500 KVA with spary pump, after removing dust and cleaning the oily portion from transformer , painting complete body and writing SM/MES No. and Capacity,Make etc on It as per directed by Engr in charge.

Painting of Transformer of Capacity above 500 to 1500 KVA with spary pump, after removing dust and cleaning the oily portion from transformer , painting complete body and writing SM/MES No. and Capacity,Make etc on It as per directed by Engr in charge.

Material and labour for laying of precast concrete cable cover, type 1 flat size 250mm x 150mm x 40mm (ISI marked) all as directed and specified

M & L for enamel sticker with SM number for numbering Transformer all as specified and directed

Sai Ram Builders

RRK PROJECTS

Arunachaleswara enterprises

GS TRADERS

Solar Electricals and Electronics