REPAIRS TO HT DISTRIBUTION NETWORK, TRANSFORMERS AND HT SWITCH GEARS INCLUDING REPLACEMENT OF ACSR CONDUCTOR HT PCC POLES, UG CABLES AND CONNECTED WORKS AT BAMBOLIM ALTINHO MADGOAN AND PONDA AREAS UNDER GE PANAJI

Amount

Excavating in trenches, n exc 1.5 m wide and n exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out in Hard / Dense soil.

All same as per item No 1 here -in - above but depth exc 1.5 mtr but not exceeding 3 mtr.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm in soft/loose/hard/dense soil.

Removing excavated material (soils) n exc. 50 m and depositing where directed at a level n exc. 1.5 m above the starting point.

M & L for sand cushioning to underground cable including punning down of sand in layer complete all as specified and directed. Note :- Thickness of sand cushion after punning down i.e 18 Cm shall be measured for payment

M&L for PCC 1:3:6 type C2 (40mm graded aggregates) as in foundation, filling and mass concrete.

M&L for cement concrete 1:3:6 type C-1 using 20mm graded stone aggregates as in coping / pedestal of poles including necessary formwork complete all as specified and directed

Supply and Laying bricks, common burnt clay building bricks, sub class 'B' of size 230 x 113 x 75 mm laid across in trenches for cable protection complete all as specified and directed.

Supplying, Errecting and fixing in repair Steel tubular swaged poles complete with cast iron base plate, finial taper plug, bolts, nuts & screws as specified type 410 SP-55 (11.0 metres long) and providing 3 Nos of 30cm wide circular bands with black & yellow paint starting from plinth level at a gap of 30 cm in between 2 bands and numbering of poles, in yellow paint over black painted back ground at a height of 2m from bottom of pole with 5 cm large bold letters 2" wide, complete all as specified and directed.

Painting the existing HT steel poles of including cross arms, clamps, etc with two coat of aluminium paint over a coat of red oxide primer including thoroughly cleaning of the existing surface, writing of pole numbers in yellow circle 15 cm with black paint on poles. Painting the pole up to 1.5 Mtr height with alternate bands 30 cm height ( 3 Nos black and 2 Nos yellow) from ground level,Complete all as specified & directed.

All same as per item No 10 here -in - above but for PCC poles of any size.

M & L for repreparation of old painted surface of any description such as Two pole structure LT/HT steel tubular/PCC pole structure of any height and painted complete including two pole structure, bracing, clamps etc with one coat of aluminium paint and providing 3 nos of 30 cmm wide circular bands with black and yellow paint starting from plinth level at a gap of 3 cm in between two bands and numbering / lettering of feeder name etc complete all as specified and as directed.

All same as per item sl No-- above but for 4 pole structure all as specified and as directed.

Painting of transformer of capacity from 250 KVA to 500 KVA, 11/.433 KV with two coats synthetic enamelled spray painting after preparation of transformer surface complete all as specified and directed.

Painting of transformer of capacity up to 250 KVA, 11/.433 KV with two coats synthetic enamelled spray painting after preparation of transformer surface complete all as specified and directed.

M & L for route tracking and pin pointing / detection and testing of under ground 11 KV HT cable of any size up to 120 Sqmm X 3 core in any length, any location by using cable fault indicator machine which includes locating the fault by using pulse reflection method, transient method, radar & thumper method, route tracking or any latest method as applicable at site complete all as specified and as directed.

M & L for testing of 11 KV cable HT UG Cable of size up to 120 Sqmm X 3 Core in any length and location by High voltage field test (Hi-pot test) by using LT AC supply including removing of moisture complete all as specified and as directed.

Taking Down Old Unserviceable HT UG Cable of any Size complete all as specified and directed by Engr-in-Charge.

Supply and Fix XLPE insulated (Earthed) , screened PVC bedded, galvanized steel strip or wire armoured, electric power cables(heavy duty) with aluminium conductor, 11000 volts grade,3 core,cross sectional area 120 sq.mm including inspection and testing.

Supply and Fix XLPE insulated (Earthed) , screened PVC bedded, galvanized steel strip or wire armoured, electric power cables(heavy duty) with aluminium conductor, 11000 volts grade,3 core,cross sectional area 95 sq.mm including inspection and testing.

M & L for Cable jointing kit for 11 KV (Earthed) grade cable for Straight through Heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm

M & L for Cable jointing kit for 11 KV (Earthed) grade cable for Straight through Heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120/180 sqmm

M & L for Cable jointing kit for 11 KV (Earthed) grade cable for out door termination heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm

M & L for Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120/180 sqmm

M & L for Cable jointing kit for 11 KV (Earthed) grade cable for In door termination heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm

M & L for Cable jointing kit for 11 KV (Earthed) grade cable for In door termination heat shrinkable type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120/180 sqmm

S & F in repair 80 mm dia steel tubes, 'light grade', galvanised, with all fittings; laid in trenches/ fixed on wall/pole all as directed.

M & L for Cross arms, bracing, supports, clamps and back plate, fabricated from structural steel section including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as directed including two coats of synthetic enamel paint over a coat of red oxide primer, complete all as directed .Dismantling and taking out damage/rusted cross arms, bracings, supports, clamps and back plates from existing poles / dismantled poles / pole structures complete all as directed.

Supply and stringing ACSR conductor of any size from LT/HT over head line as directed including fixing to insulators with proper size of binding wire complete.Including dismantling and taking out warn out ACSR conductor from overhead electric line comlete .

M&L in repairs for Cradles, hexagonal / rectangular,fabricated with galvanised steel wire 3.15 or 4mm dia.

Labour for Restringing of HT over head line single ACSR conductor comprising of any size of conductor aluminium/copper/GI after opening binding wire from insulators and replace binding wire and achieved permissible sag limit of over head line conductor complete all as directed and specified. Note- Rate quoted by the contractor shall be deemed to include for cutting/trimming of tree branches wherever touching the over headline around one metre clear of over head line and removing trimmed branches as directed.

Earthing (OH/Sub station) with galvanised steel earth plate electrode 60 cm x 60 cm x6.3 mm hick, burried directly in ground (earth pit not less than 2.25 metre below normal ground level) with top edge of earth plate not less than 1.5 metre below normal ground level connectedto main earth lead GI FI 32 mmx6mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No 5 of MES Schedule Part I 1991, GE earh lead protected by GE pipe 40 mm dia light grade, providing and connected to earth test point with & including necessary excavation & earth works in any type of soil, returning filling, disposal of surplus soilto 50 metre, filing with mixture of charcoal and common salt upto 15 cm above top edge of earth plate, pit of PCC 1:2:4 with precast cover of RCC 1:2:4, watering arrangement with GI funnel, 20 mm dia GI llight grade watering pipe, earth test point, commissioning & testing complete.

Earthing (OH/Sub station) with galvanised steel earth plate electrode 60 cm x 60 cm x6 mm hick, burried directly in ground (earth pit not less than 2.25 metre below normal ground level) with top edge of earth plate not less than 1.5 metre below normal ground level connectedto main earth lead GI wire 4.0 mm dia by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No 5 of MES Schedule Part I 1991, GE earh lead protected by GE pipe 20 mm dia light grade, providing and connected to earth test point with & including necessary excavation & earth works in any type of soil, returning filling, disposal of surplus soilto 50 metre, filing with mixture of charcoal and common salt upto 15 cm above top edge of earth plate, pit of PCC 1:2:4 with precast cover of RCC 1:2:4, watering arrangement with GI funnel, 20 mm dia GI llight grade watering pipe, earth test point, commissioning & testing complete. Note : Main earth lead beyond 7.5 metre measured and paid separately.

Surface excavation n. exceeding 30 cm deep and averaging 15 cm deep and getting out in hard /dense soil in Transformer Yard complete all as directed.

M&L for Danger notice plate of 1.6 mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and fixed with MS clamps, bolts and nuts of approved size, for HT, 25X20cm size.

Dismantling and taking out warn out/ U/S existing pin insulator from existing HT O/H Line supply and fixing of new pin 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 and 150 mm dia suitable for working pressure 11000 Volts grade complete.

Dismantling and taking out warn out/ U/S existing disc insulator supply and fix of new disc type insulator, porcelain, vitreous, white brown or green, 145mm high, and 225mm dia ball and socket type single disc assembly for tension with tension clamps for conductors, working pressure 11000 volts grade complete.

S/F switch air break gang operated horizontal type triple pole mechanically operated mounted on insulator and steel frame with operating mechanism worked from ground level for current rating up to 200 Amps 11000 volts grade complete all as directed.

Taking out and repairing/overhauling of air break gang operated switch triple pole, mechanically operated mounted on insulators and steel frame installed vertically / horizontally , replacement of broken/worn-out components, oiling and greasing of mechanical moving parts, smoothing and polishing of electric contacts with providing conducting jelly on contacts refixed the same after repair complete all as directed. (Note:- Warn out component s shall be measured and paid separately)

Supply only components of air break gang operated switch for Female contact or fixed contact heavy duty and high conductive metal complete capacity 200 Amp 11 KV.

All same as per item No 40 here -in - above but for Male contact.

Supply only components of air break gang operated switch for Tinned copper flexible jumper 200A/400A Make Rastriya/Jaipuria

Taking down old unserviceable Stay assembly and Supply and fixing mild steel galvanised stay assembly set complete comprising of 16 mm dia, 400mm long stay bow, 2150mm long stay rod 20mm dia, 300mm x 300mm x 6mm stay plate, thimble, GI stay wire of 7/8 SWG upto required length including Loop type insulator of vitreous porcelain, small size with overall dimensions 65x90mm, clearance of hole 16mm, all as shown in electrical plate No.1 of MES Schedule part-I 1991 complete including dismantling and taking out old damaged stay complete all as directed. Note-PCC, earth work, and loop type insulator shall be measured and paid separately.

S&F in repairs loop type insulator porcelain vitreous white, brown or green with overall dimensions of 90X140 mm , clearance of hole 25.5 mm all as directed.

Dismantling and taking out existing D O fuse unit 3 pole 11 KV channel mounted complete and Supply and fix new D O fuse unit 3 pole 11 KV grade channel mounted up to 50 Amps capacity including all fixing accessories complete all as specified and as directed.

Supply and fixing Lightning arrestor suitable for LT 1100 volt, non liner resistor type, horn gap and chocking coil with all fitting for outdoor use, Including Disconnecting and taking out existing unserviceable lightening arrestor complete .

Disconnecting all electrical connections including earthings of defective transformer indoor/outdoor of any capacity up to 500 KVA both from HT/LT sides, lifting the transformer by using crane, transporting the same to the reputed work shop carefulley for repair and then drainage of complete transformer oil, opening of top cover with due care and removal of all HT/LT winding connections from bushing and then lifting of core by means of tripod and chain pulley with due care for inspection and ascertain it’s serviceability state after keeping it aside, including checking of leakage of transformer body and welding works required for making transformer body leak proof, removal of all sludge and unwanted materials from tank and core, lowering of core assembly after carrying out required repairs to the winding and core, refilling the transformer oil after dehydration & filteration and re-installation of transformer in the same or other location as specified including reconnection of all electrical connections, testing and commissioning all as specified and as directed. Note :- (i) Spares like, Breather, Temp Gauge,LT Bushing, HT Bushing, De-hydration, filtration and Top up of Transformer oil will be measured and paid seperately under resp items. (ii) Lifting, Loading/Unloading, Transportation and re-installation on site after repair will be measured and paid separately. (iii) Re-winding of Transformer will be measured and paid separately. (iv) Quoted rate is deemed to be inclussive of all tests as per OEM recomendations and as specified by Engr-in-charge.

Supply only Breather assembly Heavy Duty of capacity 0.5 kg with silica gel cristal complete.

Supply only Winding tempereture gauge with maximum temp rise record handle 0 - 150 C (as per sample) including necessay wiring to the senser all as directed.

Supply only Off line Dehydration of HV/EHV grade transformer oil minimum three cycles to achieve dielectric strength up to 60KV for EHV grade and upto 40 KV for HV grade all as directed. Note- (i) Centrifuging Machine with all T&P & testing eqpt required for dehydration to be arranged by contractor. (ii) Oil required for topping up the transformer will be measured & paid separatly.

Supply only in sealed drum transformer oil EHV grade as per IS 335 of 1993 Part II filling/top up of transformer of capacity up to 250 KVA complete all as specified and directed

Supply only Copper Bushing HT Side of existing size and rating including all packing materials

Supply only Copper Bushing LT Side of existing size and rating including all packing materials

Supply only Oil tempreture gauge with max temp rise record handle 0 - 150 C (as per sample) including necessary wiring to the sensor and testing complete all as directed.

Lifting the Transformer in any location of size up to 500 KVA, Loading the same on lorry by using crane / tripod, transporting to the reputed work shop for repair and back to the substation, installation on the existing foundation/ structure carefulley all as specified and as directed.

Disconnecting HT, LT and earth connections from unserviceable / burn out transformer out door/ indoor type, pole mounted/ plinth mounted 11/0.433 KV, in any location of capacity ranging from 63 KVA to 500 KVA, lifting the transformer by using hydraullic crane and load the same in a suitable truck to transport to the manufacturer's workshop. Un loading the same by using hydraullic crane, drain out insulating oil complete to take out the core assy, replace the damaged HV/LV leg coils with proper gauge copper wire, re insulation the complete core/windings with proper insulation materials, complete servicing and ovening of transformer as specified, filter the insulation oil minimum three cycles upto 400 Ltrs quantity to receive the proper value of dielectric strength, testing the oil for not less than 40 KV BDV, refilling the same to the transformer, toping up with new transformer oil upto the marked level, re assembling complete accessories including testing of transformer at work shop as specified and directed by Engr in charge. Loading the transformer and transporting back to the substation, installation on the existing foundation/ structure including HT, LT, and earthing connections, carry out magnetic test and other specified tests after transportation of the transformer and commissioning in all respect to the satisfaction of Engr in charge. Note :- (i) The copper wire of suitable gauge for rewinding of damaged portion will be measured and paid under respective items of this schedule. (ii) The oil used for topping up of transformer oil and dehydration of existing oil will be measured and paid under respective item of this schedule.

Supply only Copper wire of superior quality of suitable gauge as per sample for rewinding HV/LV damaged coils of transformer all as specified and directed.

Prabha Electricals and Communications