REPAIR/ MAINT OF HT TRANSFORMERS, 2 AND 4 POLE STRUCTURE, GODs, VCBs, RMU, HT UNDER GROUND CABLES AND ALLIED WORKS UNDER AGE E/M-II OF GE MINNIEBAY, SRI VIJAYA PURAM.

Amount

Disconnecting and taking down of indoor/ outdoor defective transformer of following capacity from 2/4 pole structure or from PCC platform with due care after disconnecting all HV/LV connections and drain out of complete transformer oil and then opening of top cover with due care and removal of all HV/LV 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 with and including remove the sludge from tank and cleaning and dry tank to remove the moisture, with and including insulation works between HV/LV and setting of core, making new connections (as per existing connections) as well as fixing of upper yoke lamination, checking, tightening, nuts, bolts, washers and testing the jobs with megger for proper results including two coats of anti corrosive paint after cleaning inside transformer tanks. In case the repairs which are not possible at site then the transformer has to be taken to the workshop for repairs and back (transportation) complete all as specified and directed :-

Capacity 500/400 KVA

Capacity 315/300 KVA

Capacity 250/200 KVA

Capacity 100/63 KVA

Note :- (i) After opening of transformer in presence of Engineer-in-charge, an inventory of defective parts has to be prepared and signed by contractor and Engineer-in-charge. (ii) The cost of transportation shall be deemed to be included in the quoted rate by the contractor. (iii) The cost of rewinding shall be paid separately. (iv) The cost of dehydration/ filtration & other necessary repair as directed shall be measured & paid separately under relevant items of this schedule. (v) Additional transformer oil for top-up, if required will be filled by contractor and shall be paid under respective item of this schedule. (vi) After commissioning of transformer, testing by OEM has to crried out and test report duly signed by authorised rep of OEM has submitted by contractor. Charges of testing deemed included in quoted rate. (vii) Defective spare part shall be replaced and measured separately under respective item as S&F.

M&L for rewinding of HV/LV coils of any size and type of 11/33 KV transformer of capacity 63 to 500 KVA including cleaning the burnt out insulating material, brazing and rewinding with appropriate turns and size of super enameled copper winding strip including filling insulating paper etc., varnishing the winding with synthetic varnish including heating/ drying/ baking complete carefully and thoroughly inside the heating chamber at desired temperature to obtain required value of insulation resistance etc complete all as specified and as directed. Notes: (i) The unit rate quoted shall deemed to include the cost of varnishing of the sleeves of insulating material, taking down the clamps, upper channels, core & HT links and re-clamping, positioning with separators, brazing etc complete. (ii) Weight of copper coil only shall be considered for payment. (iii) Cost of charging and testing of the transformer shall deemed to be included in the quoted rate.

M&L for reconditioning of over heated HT/ LT coil of transformer up to 500 KVA after removing all old insulation any type and re-insulation as required complete all as specified and directed.

M&L for online centrifuging (filtration/ dehydration) of transformer oil including checking di-electric strength of oil before and after filtration for transformers located in various locations under AGE E/M-II Area with suitable portable machine having filtration, heating and pumping facility to improve the dielectric strength/ insulation value of transformer oil. Notes :- (i) Di-electric strength of oil after filtration/ dehydration shall not be less than 60 KV/min. (ii) The contactor shall take shut down orders in writing from Engineer-in-charge before commencement of the work. (iii) The contractor shall ensure no wastage of transformer oil. (iv) The di-electric strength of oil shall be tested before & after filtration and test results shall be kept on record duly signed by contractor and Engineer-in-Charge.

Supply and filling new transformer oil for topping up the transformers having di-electric strength not less than 60 KV complete all as specified and as directed. Note :- (a) The transformer oil shall be EHV- type confirming to IS - 335/1983. (b) Mineral oil grade shall be used. (c) The IR value of transformer oil shall not be less than 60KV/min.

S&F following bushing rod/studs for transformer rating up to 500 KVA, made of brass of suitable size with nut and washers, insulator and fittings etc as per existing shape, size, make and model complete all as specified and directed :-

HT bushing rod/studs.

LT bushing rod/studs.

S&F gasket set (cork sheet) for transformer rating upto 500 KVA for top of transformer or conservator tank after decanning the required level of oil complete all as specified and directed.

S&F air breather with filled silica gel suitable for transformer of rating up to 500 KVA complete all as specified and directed.

S&F 4mm thick rubberised cork sheet suitable for HV/LV side bushing of size as required at site complete all as specified and directed.

M&L for preparation of old surface by removal of all rust/ oil/ grease and unwanted material of transformer for painting externally including fins/radiators, and applying two coats of synthetic enamel metallic paint by means of spray gun at site of installation of transformer complete all as specified and directed for following capacity of transformer :-

315KVA to 500KVA.

160KVA to 300KVA.

63KVA to 100KVA.

Note :- (A) colour code for transformer :- (i) Body - Smoke grey (ii) Vent pipe, drain plug - Red. (iii) Base plate/C-section, iron whee l -Black (iv) Writing MES/SM No - White (v) Red, Yellow and Blue & black painting at phases and neutral (B) Shutting down of electricity shall be planned one month beforehand in liaison with Engineer-in-Charge.

S&F off load tap changer assembly as per existing make and model for following capacity of transformer complete all as specified and directed :-

315KVA to 500KVA.

160KVA to 300KVA.

63KVA to 100KVA.

S&F oil temperature gauge /thermometer suitable for transformers, as per existing shape, size, make and model complete all as specified and directed.

S&F gun metal drain valve for transformer of capacity 63 to 500 KVA, as per existing shape, size, make and model complete all as specified and directed.

315KVA to 500KVA.

160KVA to 300KVA.

63KVA to 100KVA.

S&F heat sensor in dry type/oil type suitable for transformer upto 500 KVA, as per existing shape, size, make and model complete all as specified and directed.

S&F lockable trip push button kit (3 I/C & 2 B/C), as per existing shape, size, make and model complete all as specified and directed.

M&L for repairing of transformer cooling fins, drainout transfrmer oil and find out the leakage position cleaning scraipling, breacing/welding of the cooling fins refiling of transformer oil including de-hydration and testing complete all as specified and directed.

M&L for repair/replacement of transformer of HT side cover plate, by disconnecting the electric supply, cutting welding and driling hole as per suitable size/thickness of sheets including nuts, bolts and washers etc complete all as specified and directed.

Supply, jointing/ commissioning and testing of heat shrinkable type straight through joint kit and including jointing materials suitable for 3 core XLPE 11 KV cable of following size complete all as specified and directed :-

50 to 95 Sqmm cable

120 to 185 Sqmm cable

Supply, jointing/ commissioning and testing of indoor heat shrinkable type end termination jointing kit and including jointing materials suitable for 3 core XLPE 11 KV cable of following size complete all as specified and directed :-

50 to 95 Sqmm cable

120 to 185 Sqmm cable

Supply, jointing/ commissioning and testing of outdoor heat shrinkable type end termination jointing kit and including jointing materials suitable for 3 core XLPE 11 KV cable of following size complete all as specified and directed :-

50 to 95 Sqmm cable

120 to 185 Sqmm cable

Supply, jointing/ commissioning and testing of outdoor heat shrinkable type end termination jointing kit and including jointing materials suitable for 3 core XLPE 33 KV cable of following size complete all as specified and directed :-

50 to 95 Sqmm cable

120 to 185 Sqmm cable

M&L for preventive maintenance / servicing of 11 KV VCB by disconnecting HT supply and taking out trolley of VCB HT 11 KV, upto 1000 Amps of any make and type and servicing of trolley of VCB by cleaning isolating contacts moving parts removing dust particles from bus bar chamber spout gear mechanism and moving parts, repair to motor charge spring mechanism tightening of nut & bolts of entire trolley components and replacement of all unserviceable spares as required and all as directed, inserting in trolley, testing commissioning and putting on the supply on load complete all as directed by the Engineer-in-charge. Note: - (i) After opening of VCB in presence of Engineer-in-charge, an inventory of defective parts has to be prepared and signed by contractor and Engineer-in-charge. (ii) Servicing/repairs shall be carried out by OEM's authorised dealer rep only. (ii) Spares as required for replacement shall be of the existing make or as recommended by the OEM. (iv) Cost of spares shall be measured and paid separately under relevant items as S&F.

M&L for preventive maintenance / servicing of 33KV VCB by disconnecting HT supply and taking out trolley of VCB HT 33 KV, upto 1000 Amps of any make and type and servicing of trolley of VCB by cleaning isolating contacts moving parts removing dust particles from bus bar chamber spout gear mechanism and moving parts, repair to motor charge spring mechanism tightening of nut & bolts of entire trolley components and replacement of all unserviceable spares as required to make it functional and inserting in trolley and putting on the supply on load with and including commissioning and testing complete all as specified and directed. Note: - (i) After opening of VCB in presence of Engineer-in-charge, an inventory of defective parts has to be prepared and signed by contractor and Engineer-in-charge. (ii) Servicing/repairs shall be carried out by OEM's authorised dealer rep only. (iii) Spares as required for replacement shall be of the existing make or as recommended by the OEM. (iv) Cost of spares shall be measured and paid separately under relevant items as S&F.

S&F digital protective relays comprising of 3 phase over current plus earth fault relay with high set operational with 24 volt to 110 volts AC / DC, including its caliberation by using primary/Secondary injection of the existing make and model with and including complete wiring with suitable size wire relay and fixing arrangement complete as specified and directed.

S&F HRC fuses for 11 KV VCB, rating 630 Amp to 1000 Amp (PT side), as per existing shape, size, make and model complete all as specified and directed.

S&F current transformers (CT), cast resin type with minimum primary current 50 to 100 A, single ratio, single core (Protection core-5P10- Class 0.5/1.0), 18/21/25 KA for 1 sec of 2.5 VA Burden complete all as specified and directed.

S&F potential transformer (PT), cast resin three phase, 11KV/√3/110V/√3,100VA , Cl 1.0/0.5 with desired capacity PT fuses & having burden 100 VA complete all as specified and directed.

S&F multifunction meter, Digital type (Displaying A, V, PF, Hz, KVA, KW, KVAR, KWh, KVARh etc.) Class 0.5 with RS485 port for communication in Modbus protocol complete all as specified and directed.

Caliberation of exisiting 4 pole Micro processor based digital programmer Protection relay unit having over current handling capacity up to 10 Amps for 10 millisec and Earth fault arrest less than 04 millisec to arrest the fault of individual VCB and by using primary and secondary injection at site complete all as specified and directed.

S&F mechanical castle interlock assembly with key suitable for HT 11 KV VCB of rating upto 1000 Amps, as per existing shape, size, make and model complete all as specified and directed.

S&F Closing coil assembly 24 Volts DC, as per existing shape, size, make and model complete all as specified and directed.

S&F tripping coil assembly 24 Volts DC, as per existing shape, size, make and model complete all as specified and directed.

S&F fixed contact block complete suitable for upto 1000 Amps, 11 KV HT VCB, as per existing shape, size, make and model complete all as specified and directed.

S&F moving contact block complete suitable for upto 1000 Amps, 11 KV HT VCB, as per existing shape, size, make and model complete all as specified and directed.

S&F LED indicator lamp suitable for operating at 110 V AC for RYB, as per existing shape, size, make and model complete all as specified and directed.

S&F HT 11/33KV PT HRC fuse AVT type 0.5 to 6 Amp and 2.5 KV to 36 KV, as per existing shape, size, make and model complete all as specified and directed.

S&F maintenance free battery 12Volt, 26 Ah complete all as specified and directed.

S&F tripping push button suitable for HT VCB upto 1000 Amps, as per existing shape, size, make and model complete all as specified and directed.

S&F limit switch suitable for HT VCB upto 1000 Amps, as per existing shape, size, make and model complete all as specified and directed.

Preventive maintenace/ servicing of HT RMU of make Schneider by dismantling of breaker mechanism checking the various critical setting in mechanism, busbar chamber,Electric short circuit indicator, current and earth fault relay, gas pressure/ density, manually operated mechanisms, fuses , fuse canister, feeder busbar intenal/external busbar, SF6 tank, HV compartment, auxiliary switch, interlocking lever, current transformer relay etc. checking of spring charging mechanism, checking of pole contact , greasing/ lubricating of mechanism moving parts, checking of contact pressure, alignment and adjusting the same, triping coil test trial & testing of RMU for smooth and correct functioning by Engineer of OEM complete all as specified and directed. Note: - (i) After opening of RMU in presence of Engineer-in-charge, an inventory of defective parts has to be prepared and signed by contractor and Engineer-in-charge. (ii) Servicing/repairs shall be carried out by OEM's authorised dealer rep only. (ii) Spares as required for replacement shall be of the existing make or as recommended by the OEM. (iv) Cost of spares shall be measured and paid separately under relevant items as S&F.

S&F 11KV, 25-400KVA Buchholz relay valve complete all as specified and directed.

S&F tripping/closing coils suitable for 11KV RMU complete all as specified and directed.

S&F rectified for motor circuit suitable for 11KV RMU complete all as specified and directed.

S&F tripping shaft with spring and trip circuit suitable for 11KV RMU complete all as specified and directed.

S&F charging mechanism suitable for 11KV RMU complete all as specified and directed.

Supply and filling of SF6 gas in 11KV RMU complete all as specified and directed.

Supply only tinned copper fuse wire of capacity 20 Amps and 40 Amps for drop out fuse complete all as specified and directed.

Supply only ISI marked 11KV HT rubber hand gloves complete all as specified and directed.

M&L for checking of HT cable fault by HT cable fault testing machine and by disconnecting the HT cable end termination including insulation testing complete of faulty cable complete all as specified and directed.

S&F HT 11 KV outdoor non-linear type lightening arrestor with mountings, accessories complete fixed on cross arms of two pole structure/GI flat strip and connect with same size of ACSR conductor encased in PVC alkaline pipe with all fittings connected to earth strip with nut, bolt, washer transmission class having discharge capacity of 10 kA and suitable for working pressure complete all as specified and directed.

Supply and fix HT 33 KV outdoor non-linear type lightening arrestor with mountings, accessories complete fixed on cross arms of two pole structure/GI flat strip and connect with same size of ACSR conductor encased in PVC alkathine pipe with all fittings connected to earth stripwith nut, bolt, washer transmission class having discharge capacity of 65 kA and suitable for working pressure complete all as specified and directed.

S&F danger notice plate of size 25x20 cm made up of 1.6mm thick mild steel sheet, vitreous enamelled white, with letters, figurea dn conventional skull and bone in signal red colour and fixed with MS clamps, bolts and nuts of approved size, for HT installations complete all as specified and directed.

S&F earth continuity conductor or main earthing lead of GI earth strip of size 25x4mm fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required, fixed with necessary clamps and nuts, bolts etc. including taking out unserviceable strip all as directed.

S&F in repaire including laying and testing of 3 core HT UG cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded aluminium conductor (earthed) following grade and size of cable as in trenches/ ducts/ on pole etc complete all specified and directed :- Note:- (i) Necessary test results like continuity test, megger tests, shall be submitted to Engineer-in-Charge before laying of cables. (ii) Excavation and earth work will be measured and paid separately.

95 Sqmm, 11000 Volts HT cable

120 Sqmm, 11000 Volts HT cable

185 Sqmm, 11000 Volts HT cable

120 Sqmm, 33000 Volts HT cable

M&L for Earthing complete with galvanized steel earth plate electrode 60cm x 60cm x 6mm thick, buried directly in ground (earth pit not less than 2.25m deep below ground level) with top edge of earth plate not less than 1.5m below normal ground level, connected to galvanized earth strip of 25x4mm size by means of bolts, nuts, check nuts and washers of galvanized iron or steel and connected from earth plate electrode to main switch board/ earthing test point including watering arrangement with PGI funnel and wire mesh and 20 mm GI pipe medium grade, 40 mm GI pipe light grade for earth strip protection, PCC 1:3:6 type C1 chamber, 80mm thick precast RCC cover in Type B1, including necessary excavation in any type of soil, returning, filling in, removal of surplus soil to a distance n.exc 50m, charcoal and salt complete all as shown in electrical plate No. 3 of Schedule Part-I 2009 and connected to earthing test point all as specified or indicated and testing on completion. Note:- (i) RCC pit cover shall be precast of RCC(1:2:4) type B1, 80mm thick reinforced with XPM weighing not less than 4kg/sqm in lieu of CI cover. (ii) GI earth strip and protection pipe upto and including 7.5m is deemed included in unit rate quoted by contractor.

Supply and filling dry river sand in trenches as sand for cable ducts at inside sub stations, punning down of sand in layer complete all as specified and directed. Note :- Punned thickness shall only be measured and paid.

Excavating in trenches n'exc 1.5m wide and n'exc. 1.5m in depth for foundation etc or for shafts, wells, cesspits, manholes, pier holes etc n'exc 10sqm on plan and n'exc 1.5m in depth and getting out in soft/ loose soil complete all as specified and directed.

Excavating in trenches n'exc 1.5m wide and n'exc. 1.5m in depth for foundation etc or for shafts, wells, cesspits, manholes, pier holes etc n'exc 10sqm on plan and n'exc 1.5m in depth and getting out in hard/dense soil complete all as specified and directed.

Returning, filling in, including spreading leveling watering and well ramming in layers not exc 25cm in any type of soil complete all as specified and directed.

Removing excavated materials to a distance not exc 50m and depositing where directed at a level n.exc 1.50m above the starting point complete all as specified and directed.

S&F including laying of 100mm bore GI tubes medium grade dia in trenches/ duct/ fixed to pole/wall or in such similar position with all necessary fittings complete all as specified and directed.

S&F including laying of DWC HDPE pipe, ISI marked, of size 77mm (OD) x 63mm (ID) as in trenches or in cable ducts, along with connected accessories like couplers, bends, end caps etc for UG cable protection complete all as specified and directed.

M&L for repair in four pole structure including replacement of U/S ACSR loop joints/ jumbers and carry out routine maintenance in triple pole switch 11000V mechanically operated mounted on insulator and steel frame with operating mechanism worked from ground level for current rating 200A and applying petroleum jelly/greasing on moving parts, testing complete all as specified and directed.

M&L for prepration of old treated surface of existing steel surfaces of 2 pole structure of approximate height 11.00m, consisting of 3 Nos GODs including brackets, clamps, channels and cross arms by cleaning of oils, lubricants, grease etc complete above PCC coping and applying two coats of aluminium paint including 5 Nos band/straps with yellow and black colour in alternatete way (250mm wide each) synthetic enamelled paint two coat at a distance 300mm from plinth block and marking pole nos with black synthetic enamelled paint (Number size shall be 25mm and lettering shall be 40mm) including applying two coats of white wash on exposed concrete surfaces of coping to poles duly preparing the surfaces complete all as specified and directed.

M&L for prepration of old treated surface of existing steel surfaces of 4 pole structure of approximate height 11.00m, consisting of 3 Nos GODs including brackets, clamps, channels and cross arms by cleaning of oils, lubricants, grease etc complete above PCC coping and applying two coats of aluminium paint including 5 Nos band/straps with yellow and black colour in alternatete way (250mm wide each) synthetic enamelled paint two coat at a distance 300mm from plinth block and marking pole nos with black synthetic enamelled paint (Number size shall be 25mm and lettering shall be 40mm) including applying two coats of white wash on exposed concrete surfaces of coping to poles duly preparing the surfaces complete all as specified and directed.

M&L for taking out VCB trolley from the VCB Panel and removing burnt internal wiring, including NONC switch and rewiring of internal wiring by providing labelling of each cable ends with numerical codes with suitable size pin type lugs including replacment of vaccum bottles all as per existing type and model, including replacement of burnt NONC switch, removing carbon content from the trolley and painting trolley, adjusting relays, testing the operation of vaccum circuit breaker after installation of relays by simulating different types of faults and checking the insulation levels before and after overhauling complete all as specified and directed.

S&F in repair including erecting in true vertical position, steel tubular swaged pole (410 SP–55), 11 mtr long, complete with cast iron base plate, pole cap / finial taper plug, bolts, nuts and washers, welded reduced section and longitudinal weld throughout entire length of pole with and Including all necessary excavation & earth work in any type of soil for foundation of poles, PCC (1:4:8) type 'D-2' (using 40 mm graded stone aggregate ) in foundations of size 600 X 600 X 1950 mm below GL, PCC (1:3:6) type 'C-1' (using 20 mm graded stone aggregate) in plinth block (coping) of size 600 X 600 X 300 mm above GL , removing surplus soil to a distance n. exc. 50 m & depositing where directed, including necessary form work and 2 coats of black bituminous paint externally upto planting depth and remaining exterior portion of pole shall be provided with one coat of red oxide primer and two coats of aluminium paint and numbering of the poles shall be done with synthetic enameled painted letter of shape & size complete all as specified and directed.

S&F dropout fuse unit consisting of fixed & moveable insulators with expulsion fuse single pole 11000 volts above 25Amps and upto 50 Amps capacity mounted one & including common MS channel complete all as specified and directed.

S&F pin/post type insulator porcelain vitreous white / brown / green insulators including one galvanised mild steel spindle two galvanised iron washer & one galvanised iron washer & one galvanised iron nut 150 mm height 150 mm dia for 11KV grade complete all as specified and directed.

S&F pin/post type insulator porcelain vitreous white / brown / green insulators including one galvanised mild steel spindle two galvanised iron washer & one galvanised iron washer & one galvanised iron nut 150 mm height 150 mm dia for 33 KV grade all as directed.

S&F PCC HT cable route indicator of size 0.75m x 0.20m x 60mm including marking of cable size and location complete all as specified and directed. Note:- Necessary excavation and PCC work for fixing of cable route indicator is deemed included in the quoted rate.

Cutting/removing bushes, vegetation levelling the area around E/M installation such as sub stations, 2/4 pole structures etc with and including surface excavation not exceeding 30 cm deep and average 15 cm deep and getting out vegetation with roots, throwing it away and making good all as specified and directed.

M&L for boring/ cutting roads /hard standing to a depth not less than 45cm and not less than 40cm wide for laying of GI pipe to draw the UG cable and making good the disturbed surfaces by filling of PCC (1:3:6) type C-2 (using 40 mm graded stone aggregate) and finishing the surface even and smooth with out using extra cement and disposed off the surplus debris and soil to a distance not exc 50m complete all as specified and directed.

M&L for cross arms, bracings, supports clamps and brackets plates fabricated form structural steel section including nuts, bolts, twin washers, welding bending cold or hot drilling holes for bolts in any shape or size with and including two coats of aluminium paint over a coat of red oxide primer complete all as specified and directed.

S&F in repaire synthetic insulating mat 2mx1mx2.5mm thick suitable for HT 11/33 KV complete all as specified and directed.

S&F HT Insulation tape complete all as specified and directed.

Supply only SRBP fuse element suitable of following capacity complete as specified and directed :-

10 Amps to 40 Amps for 11 KV.

11 Amps to 40 Amps for 33 KV.

S&F copper strip 20x3.15 mm complete all as specified and directed.

M&L for disconnecting the electric supply and servicing of 11 KV ACB switches upto 400Amps by disconnecting, overhauling, greasing and re-assembling same in its original existing postion, testing & commissioning including complete all as specified and directed. Note: Male/female contacts shall be measured and paid separately under relevant items as S&F.

S&F male contacts suitable for 11 KV Air Break switch complete all as specified and directed.

S&F female contacts suitable for 11 KV Air Break switch complete all as specified and directed.

S&F in repair disc insulator single disc 11 KV grade porcelain vitreous brown or green 145mm high and 255 mm dia complete all as specified and directed.

S&F in repair pin type insulator 11 KV grade porcelain vitreous brown or green insulator including one galvanised iron washer and one nut 150mm high and 150 mm dia complete all as specified and directed.

S&F in repair post top porcelain insulator vitrous brown with GI clamp nuts bolts etc suitable for 33 KV Volts grade working pressure complete all as specified and directed.

Restringing of existing ACSR’s conductors and earth wires including cradles, of any description, size & shape and in any position, as in LT overhead lines, on existing poles, including opening of connections and binding wires, restringing and tightening of conductors/earth wire in position, removing sag, binding to insulators with new aluminum wire, making and connecting jumper connections etc. including commissioning and testing complete all as specified and directed. Note : The quoted rates shall be deemed to include the following provisions also :- (i) Setting/adjusting etc in position of cradles. (ii) Adjusting & tightening of stay assembly wherever required. (iii) Trimming/cutting of all trees branches upto 1M distance from nearest conductor/earth wire as directed at site. (iv) Old spacers (if any) of ACSR conductor shall be reused and fixed as directed by Engineer-in-Charge.

S&F in repair including commissioning, & testing of HT 11 KV outdoor type gang operated air break switch polymer type complete set triple pole mechanically operated, suitable for vertical mounting (suitable for existing one) on suitable 11KV insulators and steel frame with operating mechanism worked from ground level for current rating up to 400 Amps 9 insulator type mounted on MS channel operating rod with pad lock arrangement and connecting up with jumpers complete all as specified and directed.

S&F in repair including commissioning, & testing of HT 33 KV outdoor type gang operated air break switch polymer type complete set triple pole mechanically operated, suitable for vertical mounting (suitable for existing one) on suitable 33 KV insulators and steel frame with operating mechanism worked from ground level for current rating up to 400 Amps 9 insulator type mounted on MS channel operating rod with pad lock arrangement and connecting up with jumpers complete all as specified directed.

M&L for meggering with 1000V/2500V/5000V hand operated megger machine of HT two pole structure/ four pole structure, any type insulator with complete diconnection & reconnection of jumper for checking of fault and rectification for any size any place after disconnection of AB switch complete.

Taking out HT/LT UG cable of any size laid underground/ in trenches/ in cable duct/ in tunnel/ on surfaces and relaying/ rerouting the same cable shall laid underground/ in trenches/ in cable ducts/ in tunnels/ on surface complete all as specified and directed. Note:(i)Earth work shall be measured & paid seperately under relevant items. (ii) taking out & relaying of cable protection pipe shall be deemed to be inclusive in above quoted rates. (iii) Cable protection pipe will be measured and paid separetely under relavent items below.

Supply and laying graded stone aggregate of size 40mm below near two pole structure or four pole structure complete all as specified and directed.

Repair/ Maintenance of earthings of installations like cleaning of earth pits, treatment of earthing by pouring salt water, replacement of rusted wire mesh, unserviceable funnel and repair works like patch works to the PCC chambers and RCC cover with cement mortar (1:4) complete all as specified and directed.

Sree Tirumala Enterprises (BID ID -3407310)

BHARAT MULTITECH INDUSTRIES PVT LTD (BID ID -3401089)