81029 Repair Maintenance of HT Transformer

Amount

Disconnecting defective transformer indoor/outdoor of capacity 500/400/315/300 /250/200/100/63 KVA both from HV/LV sides, and then drainage of complete transformer oil, 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. Removal of all sludge and unwanted material from tank. In case the repairs which are not possible at site then the transformer has to be taken to the work shop for repairs. Note :- (i) The cost of transportation shall be deemed to be included in the quoted rate by the conractor. (ii) The cost of rewinding shall be paid separately. (iii) The cost of dehydration/filtration & other necessary repair as directed shall be measured & paid separately under relevant items of this schedule. (iv) Additional transformer oil for top-up, if required will be filled by contractor and shall be paid under respective item of this schedule.

Disconnecting defective transformer indoor/outdoor of any capacity up to 300-500KVA both from HV/LV sides, and then drainage of required transformer oil. Opening of top cover LV and HV side bushings with due care and removal of all HV/LV winding connections from bushing and then replacement of head gasket, LV and HV bushing packings complete and ensured that no leakage in transformer from LT/HT bushing and top cover gasket as directed by Engr-in-Charge.

Disconnecting defective transformer indoor/outdoor of any capacity up to 63-250KVA both from HT/LT sides, and then drainage of required transformer oil. Opening of top cover LT and HT side bushings with due care and removal of all HV/LV winding connections from bushing and then replacement of head gasket, LT and HT bushing packings complete and ensured that no leakage in transformer from LT/HT bushing and top cover gasket as directed by Engr-in-Charge.

Taking down of transformers of capacity 500/400/315/300 /250/200/100/63 KVA from 2/4pole structure or from PCC platform with due care after disconnecting all HV/LV connections on pole mounted structures, Transportation of transformer to workshop from site of installation to workshop for repairs including loading and unloading of transformer, and replacing it to site from where it was taken for repairs (as required by Engr incharge) complete .and then lowering it by means of crane and remounting on 2/4pole structure after repairs with all connection complete all as directed and specified by engineer in charge.

Taking down of transformers of capacity 500/400/315/300 /250/200/100/63 KVA from 2/4 pole structure or from PCC platform with due care after disconnecting all HV/LV connections on pole mounted structures, Transportation of transformer to PCC/ 2 or 4 pole structure to any other required location lowering and remounting on 2/4pole structure it by means of crane after disconnecting all connection and reconnection in new location including earthing connection and as directed and specified by engineer in charge.

M&L for rewinding of HV 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 be inclusive of varnish sleeving of insulating material, taking down the clamps, upper channels and core & HT links and re-clamping, positioning with separators, brazing etc. complete. (ii) Weight of copper coil only shall be considered for payment. (iii) Charging the transformer and Testing cost shall be borne by the contractor.

M&L for rewinding of 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 be inclusive of varnish sleeving of insulating material, taking down the clamps, upper channels and core & HT links and re-clamping, positioning with separators, brazing etc. complete. (ii) Weight of copper coil only shall be considered for payment. (iii) Charging the transformer and Testing cost shall be borne by the contractor.

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 of 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 submitted to Engineer-in-Charge.

Supply and filling new transformer oil for topping up the transformers duly initialiy filtered having dielectric strength not less than 60 KV complete all as specified and as directed. [Make : Poweroil/ Electrol/ Savitha/ Tashol/ Servo]. 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. (d) The unit rate shall be deemed to include the cost of filtration to achieve desired di-electric strength before filling.

Material and labour for replacement of worn out bushing rod made out of brass with heavy duty three nuts and three washer at both ends suitable for HV side all as per exiting size, shape and length suitable for following capacity transformers :-

315 – 500 KVA Transformers.

160-300 KVA Transformer.

Material and labour for replacement of worn out bushing rod made out of made out brass with heavy duty three nuts and three washer at both ends suitable for LV side all as per exiting size, shape and length suitable for following capacity transformers :-

315 – 500 KVA Transformers.

160-300 KVA Transformer.

Material and labour for replacement of worn out porcelain bushing for 11KV HV side indoor /outdoor transformers with rubberised cork sheet washers 4mm thick all as required at site and as directed by engineer in charge suitable for following capacity transformers:-

315 – 500 KVA Transformers.

160-300 KVA Transformer.

Material and labour for replacement of worn out porcelain bushing for 0.43 KV LV side indoor /outdoor transformers with rubberised cork sheet washers 4mm thick all as required at site and as directed by engineer in charge suitable for following capacity transformers:-

315 – 500 KVA Transformers.

160-300 KVA Transformer.

Material and labour for replacement of worn out rubberised cork sheet 4mm thick for transformer top cover all as required at site and as directed by engineer in charge suitable for following capacity transformers:-

315 – 500 KVA Transformers.

160-300 KVA Transformer.

Material and labour for replacement of worn out rubberised cork sheet 4mm thick suitable for HV/LV side bushing of size all as required at site and directed by engineer in charge.

Preparation of old surface of transformer for painting externally including fins/radiators removal of all rust/oil/grease and unwanted material and then two coats of synthetic enamel metallic paint by means of spray gun at site of installation of transformer complete all as specified and directed by engineer in charge suitable for following capacity of transformer:-

315 – 500 KVA Transformers.

160-300 KVA Transformer.

Note for colour code of 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

Note :- Shutting down of electricity shall be planned one month beforehand in liaison with Engr-in-Charge.

Material and labour for replacement of worn out silica gel breather in transparent body all as per existing sample suitable for following capacity of transformers of any make.:-

315 – 500 KVA Transformers.

160-300 KVA Transformer.

Material and labour for replacement of unserviceable off load tap changer assembly all as per existing sample suitable for following capacity of transformers of any make.:-

315 – 500 KVA Transformers.

160-300 KVA Transformer.

Material and labour for oil temperature gauge /thermometer suitable for transformers all as per existing shape and size for any make and model transformers all as specified and directed by engineer in charge.

Supply and fix in replacement of gun metal drain valve for transformer of capacity 63 to 500 KVA all as directed.

Supply and fix in replacement of Buchholz Relay suitable for transformer 33KV/433 V of existing type/size/make and model

M&L for servicing and renewal/replacement of defective parts of Oil type / Dry type Transformer 315 KVA 11/0.433 KV indoor door type transformer by disconnecting of HT/LT bus bar connection, opening of doors etc complete cleaning of the inside compartment, core and coils by vacuum cleaner incl lead supports, tap changer terminal boards, bushings and other insulated surfaces be wiped clean with dry cloth and all connections must be checked for tightness after cleaning up to the satisfaction of Engr-in- Charge the transformer must be meggred and connecting all connection and necessary testing complete with under mentioned scope of work. a) Cleaning of transformer from inside. b) Testing the Transformer for IR Values c) Checking/servicing/calibration of winding temperature indication.

Supply and fix in replacement Door limit switch suitable for CSS upto 320KVA as per existing make and model complete all as directeded.

Supply and fix in replacement WTI suitable for dry type Transformer upto 320 KVA as per existing make and model complete all as directeded.

Supply and fixing heat sensor in dry type/oil type transformer upto 500 KVA as per existing make and model complete all as directeded.

M&L for isolating of power supply of LT ACB of any type/Make of capacity 1000 Amps, opening /taking out the ACB and carry out requisite repair/maint/servicing for its smooth functioning as under and refixing the ACB restoration of power supply and testing on completion complete all as specified and as directed. (a) Cleaning of pitted portion of contacts by emery paper and re-alignment of moving/fixed contact for proper alignment, complete all as directed. (b) re-setting and re-alignment of tripping and closing mechanism for proper, smooth and free operation. (c) serving of fixed carriage portion, shutter mechanism, rails etc and tightening of all nuts, bolts and fixing in position. (d) checking of all CT connection wiring etc.

Supply and fixing in replacement of Under voltage trip as per existing make and model complete all as directed.

Supply and fixing in replacement of Shunt release trip as per existing make and model complete all as directed.

Supply and fixing in replacement of Lockable Trip Push Button kit (3 I/C & 2 B/C)as per existing make and model complete all as 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 as directed.

M&L for repair/replacement of Transformer HT side cover plate,disconect the electric supply,cutting welding and driling hole as per suitable size/thickness of sheets including nut, bolts and washer etc complete all as specified and as directed.

Supply testing jointing and commissioning of heat shrinkable type straight through joint kit and incl jointing materials suitable for cable size 50 to 95/120 sq mm 3 Core XLPE 33 KV cable complete all as spd and directed . Make- Raychem/ Dension/ Mseal

Supply testing jointing and commissioning of indoor Heat shrinkable end tremination joint kit and incl jointing materials suitable for cable size 50-95/120 sq mm 3 Core XLPE 33 KV cable complete all as spd and directed . Make- Raychem/ Dension/ Mseal

Supply testing jointing and commissioning of outdoor heat shrinkable end tremination joint kit and incl jointing materials suitable for cable size 50- 95/120sq mm 3 Core XLPE 33 KV cable complete all as spd and directed . Make- Raychem/ Dension/ Mseal

Supply testing jointing and commissioning of outdoor cold shrinkable end tremination joint kit and incl jointing materials suitable for cable size 50-95 sq mm 3 Core XLPE 33 KV cable complete all as spd and directed . Make- Raychem/ Dension/ Mseal

Supply testing jointing and commissioning of cold shrinkable type straight through joint kit and incl jointing materials suitable for cable size 50 to 95 sq mm 3 Core XLPE 33 KV cable complete all as spd and directed . Make- Raychem/ Dension/ Mseal

Preventive maintenance / servicing of 11 KV VCB by disconnecting HT supply and taking out defective 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 Engr-in-charge. Note: - (i) Servicing/repairs will be carried out by OEM's authorised dealer only. (ii) Spares as required for replacement will be of the same company as of existing make or as recommended by the OEM (iii) Cost of spares will be measured and paid separately under relevant items.

Preventive maintenance / servicing of 33KV VCB by disconnecting HT supply and taking out defective 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 and all as directed, inserting in trolley, testing commissioning and putting on the supply on load complete all as directed by the Engr-in-charge. Note: - (i) Servicing/repairs will be carried out by OEM's authorised dealer only. (ii) Spares as required for replacement will be of the same company as of existing make or as recommended by the OEM (iii) Cost of spares will be measured and paid separately under relevant items.

S&F as in replacement 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 including complete wiring with suitable size wire Realy and fixing arrangement complete as secified and directed.

M&L as in replacement of Battery bank battery 150 AH aggreating 24 Volts capacity with battery charger of existing make for 11 KV VCB, rating 1000 Amp make ABB.

M&L as in replacement of HRC fuses of existing make for 11 KV VCB, rating 630 Amp to 1000 Amp all as specified and directed by Engr-in-Charge

M&L as in replacement of Current Transformers of existing make for 11 KV VCB rating upto 1000 Amp, Make : ABB.

M&L as in replacement of Multifunction meter, including repair of control wiring of VCB of make : Schineider for 11 KV VCB rating upto 1000 Amp and its wiring complete

M&L as in replacement of Charging motor of existing make for 630 Amp/1000 Amp rating 11 KV VCB all as specified and directed by Engr-in-Charge

Material and caliberation of exisiting 4 pole Micro processor based digital programmer Protection relay unit having over current handling capacity up to 10 Amps for 10 milli sec and Earth fault arrest less then 04 mili sec to arrest the fault of individual VCB and by using primery and secondary injection at site complete all as specified and directed by Engr-in-Charge.

S&F voltage/potential tranformer for VCB 630 Amps, earthed type, Model 11000/V3/110/V/110/V3-110/3V

Supply and fix in replacement of mechanical Castle interlock assembly with Key suitable for HT 11 KV VCB of rating upto 1000 Amps as per existing make and model and directed by Engr-in-Charge.

Supply and fix in replacement of Closing coil assembly 24 Volts DC as per existing make and model and directed by Engr-in-Charge.

Supply and fix in replacement of tripping coil assembly 24 Volts DC as per existing make and model and directed by Engr-in-Charge.

Supply and fix in replacement of fixed contact block complete suitable for upto 1000 Amps, 11 KV HT VCB as per existing make and model and directed by Engr-in-Charge.

Supply and fix in replacement of LED indicator lamp suitable for operating at 110 V AC for RYB as per existing make and model and directed by Engr-in-Charge.

Supply and fix in replacement of HT 11/33KV PT HRC fuse AVT type 0.5 to 6 Amp and 2.5 KV to 36 KV as per existing make and model and directed by Engr-in-Charge.

Supply and fix in replacement of moving contact block complete as per existing make and model upto 1000 amps 11/33KV complete all as directed by Engr-in-Charge.

Supply and fix in replacement of vacuum interrupter type (4 inch dia) suitable for HT VCB 11 KV upto 1000 Amps as per existing make and model and directed by Engr-in-Charge.

Supply and fix in replacement of maintenance free battery 12Volt, 26 AH Make Exide model No UPST 100.

Supply and fix in replacement of tripping push button suitable for HT VCB upto 1000 Amps as per existing make and model and directed by Engr-in-Charge.

Supply and fix in replacement of limit switch suitable for HT VCB upto 1000 Amps as per existing make and model and directed by Engr-in-Charge.

Supply and fix in replacement of charging motor button suitable for HT VCB upto 1000 Amps as per existing make and model and directed by Engr-in-Charge.

Supply and fix in replacement of pole assembly suitable for HT 11KV/33KV VCB upto 1000 Amps as per existing make and model and directed by Engr-in-Charge.

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 earthfult relay, gas pressure/ densicty, manually operated mechanisms, fuses , fuse conister, feeder busbar intenal/external busbar, SF6 tank, HV copartment, 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 fuctioning by ABB Engr or authorized coy complete all as specified and directed by Engr-in-Charge.

M&L inreplacement 11KV 25-400KVA buchholz relay valve

M&L inreplacement of triping/ closing coils suitable for 11KV RMU

M&L inreplacement of Rectifier for motor circuit of 11KV RMU

M&L inreplacement of tripping shaft with spring and trip strip for 11KV RMU

S&F as in replacment of charging mechanism for RMU

S & Fill SF6 gas to be filled in HT RMU's 11000 volt grade complete all as specified and directed

Supply only tinned copper fuse wire of capacity 20 Amps and 40 Amps for drop out fuse.

Supply only in replacement electrical Rubber hand gloves, 11KV, ISI mark

Excavation in trenches not exc. 1.50 m wide and not exc. 1.50 m in depth for finding of the cable fault in HT/LT underground cable and returning filling (including old bricks if existing and DWC pipe) the same after rectification of the cable fault in any type of soil complete all as specified and directed.

M&L for High Tension cable fault checking by high tension cable fault testing machine by disconnecting the HT cable end termination including insulation testing complete of faulty cable.complete all as specified and directed by Engr-in-Charge.

M&L in repalcement of aluminium conductor, steel reinforced off sizes including binding wire and jumper connect with PG clamp made out of aluminium alloy accodring to IS-617 complete all as specified and directed by Engr-in-charge.

Supply and fix 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 alkathine pipe with all fittings connected to earth stripwith nut, bolt, washer transmission class having discharge capacity of 10 kilo Amps and suitable for working pressure complete all asspecified and directed complete.

Supply and fixing of HT Insulation tape

S&F as in replacement of Anti climbing devices; spikes type fabricated out of MS 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.

Danger notice plate 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 25x20 cm Size

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.

Supply, lay, testing of HT UG cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) with stranded Aluminium conductor 11000 Volts (earthed) grade of size 3 core 95 Sqmm including disconnecting and taking out the existing unserviceable HT cable from trenches/ ducts/ on pole etc. all specified and as directed. Note: (i) Necessary test results like continuity test, megger tests, shall be submitted to Engineer-in-Charge before the cable is laid. (ii) Excavation earth work will be measured and paid separately.

All as per Item No 77 above herein before but cable of size 3 core 120 sq.mm suitable for 33 KV

All as per Item No 77 above herein before but cable of size 3 core 95 sq.mm suitable for 33 KV

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 20 mm GI pipe medium grade,40 mm GI pipe light grade for earth strip protection, PCC 1:3:6 type C1 chamber, MS funnel, wire gauge, 50mm 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

Supply and replace danger notice plate of 1.6mm thick mild steel sheet, 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 LT 20x15cm size all as directed.

Supply and Providing dry river sand in trenches as sand for cableducts at inside sub stations,punning down of sand in layer all as speciied. (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. 10sq.m. on plan and n. exc. 1.5m in depth and getting out in soft/ loose soil.

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. 10sq.m. on plan and n. exc. 1.5m in depth and getting out in soft/ loose soil.

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

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

Supplying and laying GI tubes medium grade 80mm bore dia in trenches/ duct/ fixed to pole/wall or in such similar position with all necessary fittings complete including taking down existing tubes all as specified and as directed.

Supply and laying in trenches or in cable ducts, DWC HDPE pipe ISI marked of size 180mm (OD) x 152mm (ID) along with connected accessories like couplers, bends, end caps etc. for UG cable protection all as specified and as directed. [Make: Rex Poly Extrusion Ltd/ Tirupati Plastomatics Pvt Ltd.]

Service /repair of two pole structure including replacement of U/S ACSR loop joints/Jumbers and Carry out routine maint.in Switch Triple pole 33000/11000V 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 directed at site.

Service /repair of four pole structure including replacement of U/S ACSR loop joints/Jumbers and Carry out routine maint.in Switch Triple pole 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 directed at site.

M&L for preparation of old painted steel surfaces of 4 pole structure of approximate height 9.00m, 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 on surfaces 1m above PCC coping, applying two coats of synthetic enamel paint in zebra pattern with black & yellow colour combination up to 1m height above PCC coping; writing MES No. of poles (Number size shall be 25mm and lettering shall be 40mm) complete including applying two coats of white wash on exposed concrete surfaces of coping to poles duly preparing the surfaces all as directed by Engineer-in-Charge.

All as per item above herein before but for two pole structure complete all as directed.

Supply only in replacement synthetic insulating mat 2mx1mx25 mm thick suitable for HT 11/33 KV

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 pintype lugs all as specified. 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 by Engr-in-charge

Supply, errect Prestressed concrete pole, 11.0 metres long. 152mm x 152mm at top and 152mm x 260mm at bottom,class 9 complete all as specified at site and directed by Engr-in-Charge.

M & L plain cement concrete 1:4:8 type D2 using 40 mm graded stone aggregate for foundation of poles complete all as specified and as directed.

M & L plain cement concrete 1:3:6 type C1 using 20 mm graded stone aggregate as in coping etc. for poles complete all as specified and as directed.

M&L for supply & fix dropout fuse unit consisting of fixed & moveable insulators with expulsion fuse single pole 11000 volts above 25 & upto 50 Amps capacity mounted one & including common MS channel complete as directed.

M&L for supply and fix 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 100 mm height 65 mm dia for 1100 volts grade all as directed.

M&L for cable route indicator made of cast aluminium disc 200mm dia, with inscription of HT cable fixed to MS angle of size 40x40x6mm, 600mm long with bolts & nuts, duly grouted in PCC 1:3:6, type C2 complete including necessary excavation and earth work all as directed including taking up existing indicators.

Cutting/removing bushes, vegetation levelling the area around E/M installation such as sub stations, 4/2 pole structure etc. 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.

Supply only SRBP fuse element suitable for 11 KV, 10 Amps to 40 Amps

Supply only SRBP fuse element suitable for 33 KV, 10 Amps to 30 Amps

Supply & fix copper strip 20x3.15 mm complete all as specified and directed

SHUSHANT ASSOCIATES