Certain repair to 11 KV and 33 KV Transformers and connected works at Mil Stn Bikaner under GE (N) Bikaner

Amount

Disconnecting HT/LT connection of burnt/defective copper/aluminium wound transformer of capacity 25 KVA, taking down from site of installation, inspection/assessing the defective/burnt parts, core assembly of transformer in the presence of Engineer-in-Charge and then shifting the transformer to the workshop at Bikaner as approved by the GE (N) Bikaner for repair, cleaning and making good surface including internal cleaning, removing sludge, washing and painting with one coat of zinc chromate paint to inner side of the transformer body and one coat of synthetic enameled paint on the outer side of transformer body with spray painting machine after cleaning and removing oil spots from the body and re-assembling and testing at workshop on full load and depositing the same to the AGE E/M store yard complete all as specified and as directed. Notes :- (i) This item is considered for fault repair and maintenance of HT infrastructure of Bikaner Mil station and different ASCON nodes located upto 200 Km away from Bikaner City. No extra cost for fault finding at ASCON nodes will be given to contractor. (ii) T&P/Vehicles and minor parts will be arranged by the contractor and the cost thereof shall be deemed to be included in the unit rate quoted against this item.

All as per serial item No. 1.00 here-in-before but Transformer of capacity 40 to 75 KVA.

All as per serial item No. 1.00 here-in-before but Transformer of capacity 100 KVA.

All as per serial item No. 1.00 here-in-before but Transformer of capacity 160 to 200 KVA.

All as per serial item No. 1.00 here-in-before but Transformer of capacity 250 KVA.

All as per serial item No. 1.00 here-in-before but Transformer of capacity 315/400 KVA.

All as per serial item No. 1.00 here-in-before but Transformer of capacity 500/630 KVA.

All as per serial item No. 1.00 here-in-before but Transformer of capacity 750/1000 KVA.

Supply and fixing in replacement HV bush assembly of 33/11 KV 3.15/5 MVA Power Transformer complete with insulator bushing rod, check nuts, washers, packing complete all as specified and as directed.

Supply and fixing in replacement LV bush assembly of 33/11 KV 3.15/5 MVA Power Transformer complete with insulator bushing rod, check nuts, washers, packing complete all as specified and as directed.

Supply and fixing in replacement Gasket set made of rubberised cork/neoprene material for power transformer 33/11 KV of capacity 3.15/5 MVA complete all as specified and as directed.

Supply and fixing in replacement WTI (Winding Temperature Indicator) for power transformer 33/11 KV of capacity 3.15/5 MVA including necessary wiring from WTI, Marshalling box to 33 KV VCB complete all as specified and as directed.

Supply and fixing in replacement OTI (Oil Temperature Indicator) for power transformer 33/11 KV of capacity 3.15/5 MVA including necessary wiring from OTI, Marshalling box to 33 KV VCB complete all as specified and as directed.

Supply and fixing in replacement Buchholz relay for power transformer 33/11 KV of capacity 3.15/5 MVA including necessary wiring from Marshalling box to 33 KV VCB complete all as specified and as directed.

Supply and fixing in replacement LV/HV leg coils with insulation varnishing and packing of coil assembly vacuum impregnation/oven dried made out of proper size aluminium wire/conductor super enameled of high quality matching with existing impedances and providing class ‘E’ insulation for any capacity of distribution / power transformer complete all as specified and as directed. Note : Unserviceable transformer coil retrieved against this item, will be cut, completely damaged and converted into scrap in front of Engineer-in-Charge.

Supply and fixing in replacement LV/HV leg coils with insulation varnishing and packing of coil assembly vacuum impregnation/oven dried made out of proper size copper wire/conductor super enameled of high quality matching with existing impedances and providing class ‘E’ insulation for any capacity of distribution / power transformer complete all as specified and as directed. Note : Unserviceable transformer coil retrieved against this item, will be cut, completely damaged and converted into scrap in front of Engineer-in-Charge.

Supply and fixing in replacement HT bushing complete with double check nuts, washers, gasket set for transformer of capacity 25 KVA to 630 KVA complete all as specified and as directed.

Supply and fixing in replacement LT bushing complete with double check nuts, washers, gasket set for transformer of capacity 25 KVA to 100 KVA complete all as specified and as directed.

Supply and fixing in replacement LT bushing complete with double check nuts, washers, gasket set for transformer of capacity 160 KVA to 250 KVA complete all as specified and as directed.

Supply and fixing in replacement LT bushing complete with double check nuts, washers, gasket set for transformer of capacity 315 KVA complete all as specified and as directed.

Supply and fixing in replacement LT bushing complete with double check nuts, washers, gasket set for transformer of capacity 500 KVA complete all as specified and as directed.

Supply and fixing in replacement HT bushing rod of brass complete with nuts, bolts, washers for transformer of capacity 25 KVA to 500 KVA complete all as specified and as directed.

Supply and fixing in replacement LT bushing rod of brass complete with nuts, bolts, washers for transformer of capacity 25 KVA to 100 KVA complete all as specified and as directed.

Supply and fixing in replacement LT bushing rod of brass complete with nuts, bolts, washers for transformer of capacity 160 KVA to 315 KVA complete all as specified and as directed.

Supply and fixing in replacement LT bushing rod of brass complete with nuts, bolts, washers for transformer of capacity 500 KVA to 630 KVA complete all as specified and as directed.

Supply and fixing in replacement Gasket set made of rubberised cork/neoprene material for distribution transformer 11/0.433 KV of capacity 25 KVA to 100 KVA complete all as specified and as directed.

Supply and fixing in replacement Gasket set made of rubberised cork/neoprene material for distribution transformer 11/0.433 KV of capacity 125 KVA to 630 KVA complete all as specified and as directed.

Supply and fixing in replacement breather assembly with fresh silica gel for transformer of capacity 25 KVA to 100 KVA complete all as specified and as directed.

Supply and fixing in replacement breather assembly with fresh silica gel for transformer of capacity 125 KVA to 250 KVA complete all as specified and as directed.

Supply and fixing in replacement breather assembly with fresh silica gel for transformer of capacity 315 KVA to 1000 KVA complete all as specified and as directed.

Supply and filling new mineral grade transformer oil EHV type conforming to IS-335 of 1993 for filling and for topping up in transformer duly filtered with filtration plant to obtain high dielectric strength not less than 40 KV (gap 2.5mm) complete all as specified and as directed. Note : Transformer oil shall be supplied in sealed barrels with test certificate. Cost of barrel shall be deemed to be included in the unit rate quoted by the contractor and empty barrel will be the property of the Department and same shall be deposited to the AGE E/M Store Yard. Nothing extra shall be paid on this account.

Dehydration & filtration of transformer oil with portable filtration cum dehydration machine to improve the dielectric strength, not less than 50 to 60 KV within 1 minute with 4 mm Gap at site of any installation in Cantt area of any capacity/make of transformer installed on pole mounted, indoor/outdoor type plinth mounted complete all as specified and as directed. Notes: (i) All necessary T&P / testing equipment shall be provided by the contractor at his own cost. No extra payment shall be made to the contractor. (ii) Contractor shall ensure that there shall be no wastage of transformer oil. (iii) Contractor shall ensure that conservator tank is full to its level before starting the dehydration. (iv) New Transformer Oil required for topping up shall be measured and paid for separately under relevant item of this Schedule. (v) Testing of dielectric strength of dehydrated transformer oil of each transformer shall be carried out in the presence of Engineer-in-Charge and cost thereof shall be borne by the contractor.

Supply and fixing in replacement Temperature Gauge (ISI marked) for transformer of any capacity & any type complete all as specified and as directed.

Supply and fixing On Load tapping changer switch suitable for 11/0.433 KV transformer with 7 steps tapping complete with rod and gasket suitable for transformer of capacity 25 KVA to 1000 KVA including taking out unserviceable tapping switch of any type complete all as specified and as directed.

Supply and fixing in replacement oil drain valve suitable for 25 KVA to 500 KVA transformers of indoor/outdoor type complete all as specified and as directed.

Disconnecting HT/LT connection of transformer and opening up the top cover of transformer of capacity 25 KVA to 250 KVA for checking the condition to carryout repairs at site, including draining out oil from the transformer in suitable container (containers to be provided by the contractor) and repair to the transformer with replacement of parts (as required), checking the lead connection from winding to bus rods including necessary soldering/jointing etc and after complete repair refilling the dehydrated oil and testing on full load after connecting the HT/LT connections complete all as specified and as directed. Notes : (i) Labour component required for the replacement of unserviceable parts shall deemed to be included in the unit rate quoted against this item. (ii) Major parts (as required) shall be measured and paid separately under appropriate item of this Sch ‘A’. (iii) Dehydration/filtration of transformer oil shall be measured and paid separately under appropriate item of this Sch ‘A’. (iv) T&P and minor parts shall be arranged by the contractor and the cost thereof shall deemed to be included in the unit rate quoted against this item.

All as per serial item No. 36.00 here-in-before but Transformer of capacity 315 KVA to 1000 KVA.

Supply and fixing in repairs aluminium strip of size 50mm x 6mm thick, 15cm long, 4 Nos (three Nos in phase and one No in neutral) including drilling, bending, nuts, bolts and washers of appropriate size to transformer of LT side bushing rod complete all as specified and as directed.

Supply and fixing in repair aluminium strip of size 25 x 3 mm earth continuity conductor fixed to pole/wall or buried in ground or any other indicated situation for loop earthing complete all as specified and as directed.

Supply and fixing in repair galvanized iron strip of size 32 x 6 mm earth continuity conductor fixed to pole/wall or buried in ground or any other indicated situation for loop earthing complete all as specified and as directed.

M&L for Earthing to Transformer / GOD switch / equipments / panels etc with & including galvanised mild steel earth plate electrode of size 60 cm x 60 cm x 6 mm thick buried vertically in ground (earth pit not less than 2.25 m below normal ground level) with top edge of the earth plate at a depth not less than 1.5 m below ground level, the earth electrode surrounded by adequate quantity of charcoal dust and salt to a packed thickness of 15 cm on all sides, connected to & including galvanized mild steel strip 32x6 mm as earth lead, including nuts, bolts, check nuts & washers of galvanized iron or steel and riveted/welded to earth plate at one end and other end of strip connected to transformer / GOD / Panel / equipment body / test point with two Nos nuts bolts or welding with steel structure, GI earth strip encased in and including 40mm bore GI light grade pipe with all fittings from upper edges of earth plate upto 7.5 metre above ground level fixed with and including 25x3mm flat iron clamps, bolts, nuts and washer and also including providing watering pipe 20mm bore GI pipe medium grade from earth pit to top of electrode and including funnel, wire mesh, copper lugs etc complete with earth pit in PCC 1:3:6 type C1 using 20mm graded crushed stone aggregate and 40mm thick RCC (1:2:4 type B1) cover complete all as specified and shown in electrical plate No 3 of SSR Part-I including necessary excavation and earthwork in any type of soil, returning, filling in approved soil and disposal of surplus soil to a distance not exc 50m complete all as specified and as directed including dismantling & taking out old existing unserviceable earthing. Note : PCC chamber shall be constructed at least 1.5 mtr away from the earth electrode and pipe for watering shall be provided in slanting manner.

Shifting of transformer of capacity 25 KVA to 250 KVA from AGE E/M store yard of GE (N) Bikaner to the place of installation and installing on existing 2/4 pole structure or platform with necessary fixing arrangement including connecting up electrically, commissioning and testing complete all as specified and as directed. Notes : (i) All T&P/Vehicle required for shifting, connection, loading, unloading, etc including necessary petty items like bolts, nuts etc shall be arranged by contractor and rates for the same shall deemed to be included in rate quoted. (ii) If transformer or any connected equipment/part is lost or damaged while in the custody of the contractor, the same shall be provided / repaired by the contractor at his own cost complete to the entire satisfaction of GE.

All as per serial item No. 42.00 here-in-before but Transformer of capacity 315 KVA to 630 KVA.

S&F cross arms, bracing, supports, clamps and back plates fabricated from structural steel sections conforming to Grade E-165 (Fe 290) including nuts, bolts, washers, welding, bending cold or hot, drilled holes for bolts, in any shape or size with & including two coats of aluminium paint over a coat of red oxide zinc chrome primer, fixed in repairs, complete all as specified & as directed. Notes :- (i) Size, section and shape of steel sections shall be as directed. (ii) Weight of paint shall not be considered for payment purpose and quoted rate shall deemed to be included this aspect.

Surface dressing not exc 15cm deep in soft/loose soil and clearing away all grass vegetation, saplings, shrubs, brushwood, undergrowth, roots, and trees not exceeding 30 cm girth (measured one metre above ground level) surrounding Transformers, LT Panels, 02 Pole structures, 04 Pole Structures, etc at various sub stations / E&M installations and removing rubbish upto a distance exc 200m & not exc 250m outside the periphery of the area under clearance complete all as specified & as directed.

Taking out silica gel from unserviceable breather assembly of transformer of any capacity and supply & filling new Silica Gel blue in crystal complete all as specified and as directed.

M&L for cleaning and preparation of old painted surfaces of transformer 11/0.433 KV (exposed external surfaces only) installed at site of any installation in Cantt area of capacity 25 KVA to 100 KVA pole mounted, indoor/out door plinth mounted by using coarse cloth/sore brush etc and painting with one coat of synthetic enamel grey paint with the help of spray gun, including marking of SM/MES No etc. on transformer with synthetic enamel paint (white), complete all as specified and as directed.

All as per serial item No. 47.00 here-in-before but Transformer of capacity 125 KVA to 250 KVA.

All as per serial item No. 47.00 here-in-before but Transformer of capacity 315 KVA to 1000 KVA.

Pioneer Enterprises

B5BUILDING SOLUTIONS