REPAIR AND MAINT OF TRANSFORMERS GODS VCBS AND OTHER CONNECTED ALLIED WORKS AT DAMANA UNDER GE JAMMU

Amount

Excavation in trenches not exceeding 1.5 mtr wide and not exceeding 1.5 mtr in depth and getting out in any type of soil for taking up or laying of cable all as specified and directed.

Description of all as per srl item No-1 above but depth exceeding 1.5 mtr and not exc 3.0 mtr complete all as specified.

Returning, filling in including spreading, levelling, watering and well ramming in layers not exceeding 25 cms, complete all as specified.

Removing excavated material (soil) not exceeding 50m and deposition where dircted at a level not exceeding 1.50m above the starting point, all as specified and directed.

Supply and laying reinforced precast concrete cable cover, class EHV, type 1 with peak size 450 mm x 230 mm x 50 mm, complete all as specified and directed.

Sand cushioning to underground cables provided with a layer of sand 8cm thick before laying the cable in trenches and 15cm thick after laying the cable in trenches confirming to clause 19.75 of MES SSR Part-I, complete all as specified. Note:- 1.Dry fine sand of best available quality shall be used. 2.Punned thickness shall be made and paid.

Plain cement concrete (1:3:6) type C-1 using 20 mm graded crushed stone aggregate as in coping including necessary form of work or other similar situation, complete all as and directed

Plain cement concrete (1:3:6) type C-2 using 40 mm graded crushed stone aggregate as in foundation filling & mass concrete of stay assembly or other similar situation, complete all as specified and directed

Plain cement concrete (1:4:8) type D-2 using 40 mm graded crushed stone aggregate as in foundation filling & mass concrete of pole or other similar situation, complete all as specified and directed.

Disconnecting the Transformer 11/0.433KV & 250 KVA to 400 KVA from electric and earth connection, taking down carefully from four pole structure/platform, by any means of mechanically operated pulley/ mechanical crane, transportation to MES store Yard / workshop and factory for repair/maint and with & including opening the top cover of transformer, draining out oil in clean barrels, dismantling of cover & taking out the defectiv/burnt out HT/LT coils, cleaning the tank and getting out the dust particles & replacing old defective coils with new coils, refitting the top cover and other accessories such as providing sundry items & reassembling after repairs to the entire satisfaction of the Engr-in-Charge and making the transformer absolutely leak proof, pouring oil in the transformerre including heat treatment, connecting of all the electrical connections and other accessories and transporting back of transformer to existing places to MES store yard or other existing substaions after repair & hoisting / lifting and placing in position and securing properly on pole mounted/plinth ......contd to item No-10.01

mounted making all electrical connections testing of transformer on load atleast 12 hrs after repair, complete all as directed by Engineer-in-Charge. Note :- (i) Please note that If any damage to transformer/OH line/cables occur during handling, transportation or during hoisting / lifting, the same will be rectified by the contractor without any extra cost to the department. (ii) Transportation to workshop and back to site /and required T&P like crane etc are to be arranged by contractor & rate for which is dimmed to be included in the item. (iii) If retrieved transformer oil's di-electric strength is very less, then it will be replaced with new one .as directed by Engineer Incharge and same will be measured & paid under relevent item. (iv) If any items like winding of HT coil, reconditioning of LT coil, spares like breather, silica jel to be replaced for smooth functioning of transformer shall be measured in relevent items. (v) Any minor item like nut ,bolt,f glass Sleeves/ ebonite sleeves insulating material tapes are included in this item rate.

Disconnecting the Transformer 11/0.433KV & 40 KVA to 200 KVA from electric and earth connection, taking down carefully from four pole structure/platform, by any means of mechanically operated pulley/ mechanical crane, transportation to MES store Yard / workshop and factory for repair/maint and with & including opening the top cover of transformer, draining out oil in clean barrels, dismantling of cover & taking out the defectiv/burnt out HT/LT coils, cleaning the tank and getting out the dust particles & replacing old defective coils with new coils, refitting the top cover and other accessories such as providing sundry items & reassembling after repairs to the entire satisfaction of the Engr-in-Charge and making the transformer absolutely leak proof, pouring oil in the transformerre including heat treatment, connecting of all the electrical connections and other accessories and transporting back of transformer to existing places to MES store yard or other existing substaions after repair & hoisting / lifting and placing in position and securing properly on pole mounted/plinth ......contd to item No-11.01

mounted making all electrical connections testing of transformer on load atleast 12 hrs after repair, complete all as directed by Engineer-in-Charge. Note :- (i) Please note that If any damage to transformer/OH line/cables occur during handling, transportation or during hoisting / lifting, the same will be rectified by the contractor without any extra cost to the department. (ii) Transportation to workshop and back to site /and required T&P like crane etc are to be arranged by contractor & rate for which is dimmed to be included in the item. (iii) If retrieved transformer oil's di-electric strength is very less, then it will be replaced with new one .as directed by Engineer Incharge and same will be measured & paid under relevent item. (iv) If any items like winding of HT coil, reconditioning of LT coil, spares like breather, silica jel to be replaced for smooth functioning of transformer shall be measured in relevent items. (v) Any minor item like nut ,bolt,f glass Sleeves/ ebonite sleeves insulating material tapes are included in this item rate.

Rewinding of HT coils Transformer 250 to 400 KVA 11/0.433 KV with super enamelled double paper wound copper winding wire of existing size and No of turns alongwith insulating material like leathorised paper insulation cotton tape, wooden block packing, varnishing etc, demoisturing by heating and drying etc including primaray testing, ratio testing, no load testing core bolt insulation tesing all as specified and directed by Engr-in-Charge. Note: Rewinding and testing of transformer to be carried out through approved firm.

Rewinding of LT coils Transformer 40 to 400 KVA 11/0.433 KV with super enamelled double paper wound copper winding wire of existing size and No of turns alongwith insulating material like leathorised paper insulation cotton tape, wooden block packing, varnishing etc, demoisturing by heating and drying etc including primaray testing, ratio testing, no load testing core bolt insulation tesing all as specified and directed by Engr-in-Charge. Note: Rewinding and testing of transformer to be carried out through approved firm.

Taking out old LT winding wire and recondintioning of existing LT copper strip with new insulating material, with leathorised paper insulation, cotton tapes, wooden block packing and PVC sleaves, soldering and varnishing, heating, drying and testing of coils for transformer of cap 40 to 400 KVA, complete all as specified.

Supply and fixed in replacement HT brass / gun metal bush connecting rod of suitable length and dia with necessary nuts, washers and bushing packing to prevent oil leaking from the bushes and HT insulators including making necessary connections for transformer capacity from 40 KVA to 400 KVA, complete all as specified.

Supply and fixed in replacement LT brass / gun metal bush connecting rod of suitable length and dia with necessary nuts, washers and bushes and LT insulators packing to prevent oil leaking from the bushes including making necessary connections for transformer capacity from 40 KVA to 400 KVA, complete all as specified.

Silica gel breather assembly of metallic body for 11 KV transformer of capacity from 40 KVA to 400 KVA, complete all as specified.

Cork sheet gasket of 6mm thick cut to size / Shape for top cover of 11 KV transformer of capacity up to 400 KVA, complete all as specified.

Dehydration, filtration of step down (33/11KV and 11/0.415 KV) transformer oil at various and various capacity of transformers on running condition of transformer, dielectric strength not less than 60 KV in 2.5 mm gap (RMS), complete all as specified. Note :- (I) Dehydration and filtration can be carried out at site by bringing filtration machine or other wise the same shall be got done from the manufacturing workshop of transformers. (ii) Testing oil shall be carried out before filtration and after filtration of insulating oil.

Supply, heating and topping/filling up of transformer insulating oil EHV grade having dielectric strength not less than 60 KV (RMS) at 2.5 mm gap high velocity in transformer. ( Transforemer cap 40KVA to 400 KVA, complete all as specified. Make-Transoil/power oil.

Painting of transformer externally with two coats of spray painting with heat resistance synthetic enamelled paint of smoke grey colour after cleaning surface thoroughly with thinner and scrapper and preparing the surface to required standard including writing and marking such as MES No on the body of transformer capacity upto 400 KVA, complete all as specified.

Supply, laying, testing and commisioning HT underground cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire aromoured electric power cables (heavy duty) with aluminium stranded condutor served with an inner sheathing of PVC tape armoured with galvanized steel strip and overall PVC sheathed 11000 volts grade (earthed) of cross sectional area of size 95 sq mm 3 core, complete all as specified.

Cable jointing kit for 11000 Volts grade (E) cable indoor termination heat shrinkable type joint complete with jointing material suitable for 3 core XLPE armoured aluminium joint conductor cable of size 95 to 120 Sqmm and jointing materails for making joints and testing complete all as specified.

Cable jointing kit for 11000 Volts grade (E) cable outdoor termination heat shrinkable type joint complete with jointing material suitable for 3 core XLPE armoured aluminium joint conductor cable of size 95 to 120 Sqmm and jointing materails for making joints and testing complete all as specified.

Cable jointing kit for 11000 Volts grade (E) cable straight through shrinkable type joint complete with jointing material suitable for 3 core XLPE armoured aluminium joint conductor cable of size 120 to 185 Sqmm and jointing materails for making joints and testing complete all as specified.

Steel tubular poles, swaged type, 410 SP-55, 11m long with 300x300x6mm thick MS base plate continuously welded to pole with MS sheet 2mm thick plug welded at top, bolts, nuts and screws all as specified including two coats of black bituminous paint internally throughout and externally for embedded portion and two coats of aluminium paint over a coat of red oxide primer on exposed surfaces including painting up to 1.5 mtr height from ground level or above coping with two coats of synthetic enamel paint in 30cm strip, alternate balck & white from ground level / coping including taking down old unserviceable pole, complete all as specified and directed. (Note:- Excavation and earth work and PCC shall be measured & paid separately)

Switch air break gang operated triple pole mechanically operated from ground level, mounted on insulators and steel frame (12 insulator type) outdoor type suitable for vertical installation single break provided with locking arrangement consisting of MS channel, HT post top insulator with drop out fuses operating rod 25mm bore GI pipe medium grade confirming to relevant IS, current rating 200 Amp and voltage 11 KV including jumpering, lead of wire/cable as directed at site including taking down old unserviceable switch, complete all as specified and directed.

Supply and fixed in replacement lightning arresters expulsion type complete with all fittings, transmission class, discharge capacity 65 kilo amp suitable for 11 KV all as specified and directed.

Aluminium conductor steel reinforced (ACSR) any size (as directed and recommended size of current rating) including stretching, fixing and binding to insulator on LT / HT OH line on poles including aluminium binding wire including taking down existing worn out old broken ACSR conductor of any size and type and length at any position from LT/HT poles, complete all as specified and directed.

Galvanised steel wire 4.0 mm dia for continuous earth wir e/ cradle guard for HT overhead line 33/11/0.415 KV line including taking down existing old broken steel wire of any size and type and length at any position from LT/HT poles, complete all as specified and directed.

Stay assembly with accessories and GI stay rod 16 mm dia 1900 mm long including mild steel stay plate 300 mm x 300 mm x 6 mm and galvanised thimble, galvanised steel 14 mm dia 400 mm long stay bow and GI nuts, washers including loop type insulator vitreous porcelain white, brown or green big size with overall dimensions 90 mm x 140 mm clearance of hole 25.5 mm complete all as specified and shown in electrical plate No 01 of SSR Part - I including taking down old unserviceable stay assembly (Excavation, stay clamps, stay wire and concrete work etc will be measured and paid separately), complete all as directed.

Supply and fixed in replacement Disc type, insulator, porcelain, vitreous, white, brown or green, 145 mm high and 255 mm dia ball and socket type for working pressure 11000 volts complete Single disc assembly for tension with tension clamps for conductors all as specified and as directed.

Supply and fixed in replacement Pin type insulator porcelain vitreous with brown of green including one galvanised mild steel spindle two galvanized iron washer and galvanized iron nut, 150 mm height and 150 mm dia 11000 volt grade fixed, complete all as specified and directed.

Preparation of old painted surface on HT PCC pole upto 1.5 mtrs height in alternate layer by applying synthetic enamel paint in black and white colour each strip 30 cm incl wiriting pole numbers/sub stn No and cutting vegetation growth all around and on the poles up to 1 mtr radius complete all as specified and directed.

Calibration of digital/IDMT protective relays of 11 KV panel (OCB/VCBs), testing of 11 KV control and relay panel includes main protection relay. Backup protection(O/C &E/F) relay for all features like inverse O/C, Inverse E/F, high set O/C, high set E/F etc along with pickup & dropoff volts for all auxillary relays like master trip, trip circuit supervision, checking and testing of wiring connections at all teriminal points/ at relays, inspecting wring for any open circuit, shot circuit & damaged insulations, and prepartion inspection data sheet of existing feeder re-programming input data into relays (OCHS,EFHS, OCLS, EFLS, CTR, TDS etc) complete testing by injecting current in CT primary and measure secondary current at 11 KV , control and relay panel for metering in service through current injection in CT primary and ratio and including complete polarity test complete all as specified and directed. Note: (i) All testing shall be carried out in presence of Engr-in-Charge and test certificate shall be provided

Calibration of digital/IDMT protective relays of 33 KV panel testing of 33 KV control and relay panel includes testing of main protection (differential relay). Backup protection(O/C &E/F) relay for all features like differential current, REF, inverse O/C, Inverse E/F, high set O/C, high set E/F & their time of operation etc along with pickup & dropoff volts for all auxillary relays like master trip, trip circuit supervision transformer aux relays (Alarm trip function) and preparion inspection data sheet of existing 33 KV control panel re-programming input data into relays ( OCHS,EFHS,OCLS, EFLS, CTR, TDS etc) complete testing by injecting current in CT primary and measure secondary current at 33 KV control and relay panel for metering protection relay plug settings intended in service through current injection in CT primary and ratio including complete polarity test complete all as specified and directed. Note: (i) All testing shall be carried out in presence of Engr-in-Charge and test certificate shall be provided

Supply in replacement indicator lamp assembly in different colour as directed complete of OCB/VCB panel 24/36/110 Volts of existing size, complete all as specified and directed.

Supply and fixed in replacement digital meter showing Amps, Volts for 11 KV VCB control panel complete all as directed by Engr-in-Charge.

Ampere meter analog type of size 50x50 mm, range from 0-100 for 33 KV control panel, complete all as directed by Engr-in-Charge.

Volt meter meter analog type of size 50x50 mm, range from 0-40KV, for 33 KV control panel, complete all as directed by Engr-in-Charge.

Power factor meter analog type of size 50x50 mm, range from 0-1 for 33 KV control panel, complete all as directed by Engr-in-Charge.

Repairs to existing 33 KV isolator including replacement of male female contacts / fled jumper back connector plate, welding of bkts / handle with suitable size of MS flats / handle with suitable as per site requirement including alignment for smooth functioning of isolator, complete all as directed by Engr-in-Charge. Note: (i) All T&P required at site is deemed to be included in quoted rate. (ii) spares parts shall be measured seperately under relevent item.

Supply only 33 KV male contact/moving contact blade for AB switch/isolator

Supply only 33 KV female contact/fix contact jaw)

Supply only 33 KV tinned copper flexible jumper 200/400 Amps

Supply only 33 KV back connector plate

Maintenance and complete servicing of SF6 circuit breaker at 33 KV yard including de-assembling of operating machanism parts, well cleaning with petrol CRC 226, replacing unserviceable parts and accessories like spring, gasket, coils, nuts, bolts and washers etc oiling and greasing of moving parts, re-assembling, fine setting of mechanism, well cleaning and de-carbonizing of control pot, fixed and moving contact including checking, testing, tripping check SF6 circuit breaker making perfect operation in manual and electric mode including maintenance and well cleaning the complete panel board de-carbonizing all joints, replacing unserviceable parts and components etc complete all as directed by Engr-in-Charge. Note: (i) All T&P required at site is deemed to be included in quoted rate. (ii) Spares parts for circuit breaker will be measured and paid seperately under relevent items.

Supply only SF6 circuit breaker motor charging assembly including motor, supply voltage 230 volt AC (Make: ABB, type ESH9, SN: 00000182006 as per existing)

Supply only RE 300, 30Volt DC relays

Supply only Indicating lamps (red, blue, green and yellow)

Supply only Tripping coil 30 Volt DC

Supply only Closing coil 30 volt DC

Maintenance and complete servicing of HT VCBs including de-assembling of operating machanism parts, well cleaning with petrol CRC 226, replacing unserviceable parts and accessories like spring, gasket, coils, nuts, bolts and washers etc oiling and greasing of moving parts, re-assembling, fine setting of mechanism, well cleaning and de-carbonizing of arc control pot, fixed and moving contact including checking, testing, tripping check of HT VCBs making perfect operation in manual and electric mode including maintenance and well cleaning the complete panel board bus bars, de-carbonizing all joints, bus bar, CTs metal parts, replacing unserviceable parts and components etc complete all as directed by Engr-in-Charge. Note: (i) Spares parts for VCB to be measured and paid seperately. (ii) Supply of spares for HT VCB CG/Electrofield

Supply only spring charging motor make: Power aids as per existing brand

Supply only closing coil 30 Volts DC.

Supply only tripping coil 30 Volts.

Supply only vaccum intrupter for existing VCB.

Supply only control wiring kit for metering, motor charging, indicator lamps and relays etc.

Supply only Motor charged mechanism assembly with close/trip coil & charging handle of existing size and capacity.

Supply only manual charging handle for VCB 11 KV.

Supply only operating shaft pin for VCB 11 KV.

Supply and fixed in replacement of 33 KV single phase out door oil cooled CT of ratio 400/5-5 Amp class 1.0 – 5P10 burden 15 VA insulation level 70KV/170KV as per IS-2705, complete all as directed by Engr-in-Charge.

Supply and fixed in replacement of 11 KV single phase in door resin cast CT of ratio 400/5-5A class 1.0 – 5P10 burden 15VA – 15 VA insulation level 28 KV/75 KV as per IS-2705, complete all as directed by Engr-in-Charge.

Surface excavation not exceeding 30cm deep and average 15cm deep around the plateform of transformer, GODs, Switch, DG Set at E/M installation inside the perifery of installation and getting out in any type of soil and removing excavated material 50m away from site, complete all as specified and directed.

vishesh engineers

M/S RAJ ENGINEERS