REPAIR AND REPLACEMENT OF SPARES TO HT VCBs 11 KV SUB STATIONS, RMUs LBs 11 KV OH LINES GOD LIGHTNING ARRESTORS HT UG CABLES LT UG CABLES CONTROL CABLES, LT PANELS APFC PANELS LT SWITCH GEARS AND ITS CONNECTED EM WORKS AT EETF DSST DSP CIC MRSAM ARMY

Amount

Disconnecting the electric supply to the transformer, opening the transformer by unscrewing bolts from the top cover of the transformer,draining out of transformer oil into a container upto required level for arresting the leakage in the transformer, taking down of unserviceable HV and LV bushes from the transformer if necessary, replacement of top cover gasket, HV and LV side bushes gasket, buchholz relay gasket,bolts, nuts and washers, with new ones required soldering work if necessary while fixing the bushes, and re-fixng the same for transformer capacity ranging from 325 to 630 KVA complete including testing the transformer after repairs all as specified and directed.

Note: (i) HT /LT metal studs, HT/LT bushes and gaskets of HT and LT side will be measured and paid for seperately as supply only under Sl Nos 4 to 14 here-in after. (ii) Nuts,bolts,washers,petrolium jelly, grease, CTC required are deemed to be included in the unit rate quoted. (iii) Filteration of drained out transformer oil will be measured and paid for separately.

All as per item No. 1 above but of capacity 750 and above

Supply only of HT porcelain bush suitable for any make of transformers upto 325 to 630 KVA capacity all as directed by Engineer-in-Charge

All as per item No.3 above but of capacity 750 and above.

Supply only LT porcelain bush suitable for transformers of any make and of capacity 500 KVA to 750 KVA all as specified and directed.

Supply only of LT rod/studs with nuts and washers of brass all as per size and shape of existing of capacity upto 160 KVA all as directed by Engineer-in-Charge

All as per item No.6 above but of capacity 315 to 500 KVA.

All as per item No.6 above but of capacity 630 to 1500 KVA.

Supply only set of top cover gasket for transformers of capacity upto 160 KVA all as directed by Engineer-in-Charge.

All as per item No. 9 above but of capacity 315 to 500 KVA.

All as per item No. 9 above but of capacity 630 to 1500 KVA.

Supply only oil temprature gauge for 500/630/750/1000 KVA transformer all as directed by Engineer-in-Charge.

Opening the LT bus duct from LT side of 11 KV/0.433 KV transformer to incomer of LT panel board , cleaning the carbon deposits on the busbar, replacement of bolts/nuts, body insulators including testing complete all as directed.

Opening of LT panel board, disconnecting and removing of the burnt out cable end terminations, cutting and reterminating of the cable end portions with proper size of lugs and decarbonising of panel busbar and cleaning with CTC, replacing of cable glands, connecting back cable end termination properly, opening of the busbar chambers, cutting removing of the cable connections, reterminating with proper size of lugs, tightening of the bus bar nuts, bolts including wrapping of the busbar with colour codes, checking of all switches, MCCBs all isolators, tightening of the loose connections replacing of burnt out fuse, cut out fuses with new ones complete all as directed by Engineer-in-Charge.

Disconnecting the electric supply,removing the HT and LT cable connections and taking out the transformer of capacity 315 to 1250 KVA from the platform,lifting the transformer with suitable crane,loading into the goods carrier and shifting the transformer to an approved factory (workshop) for reairs and transporting back installation in its original location including connection of HT and LT cable connections all as directed by Engineer-in- Charge. Note : Repairs to tranformer and testing will be measured and paid for separately.

M&L for draining out transfomer oil, removing the inspection cover , lifting the core with suitable crane and removing the winding from the core replacing the unserviceable insulation of LV coil,HV coil and rewinding the unserviceable HV,LV coil turns with new electrolytic copper conductor,drying of core and winding in the oven upto required IR values, assembling the core with new insulation ,replace the unserviceable LT,HT bushing washers,oil seal gaskets of inspection cover with new ones conduct all testing commissioning completely all as directed by Engineer-in-Charge. Note : HT/LT bush,transformer oil, LV,HV coils, inspection cover gasketgasket and testing of transformer will be measured and paid separately under relevant items.

M&L for making LT/HT coil with insulation copper wire of required gauge craft paper cotton tape HT/LT insulation as per specification of old transformer complete all as directed by engineer -in-Charge.

Removal of unserviceable silica gel and supply and fill silica gel in breathers of transformers complete all as directed by Engineer-in-Charge.

Supply only inspection cover gasket, radiators gasket, HT Cable box gasket and LT Cable box gasket etc complete all gasket of transformer of grade SRC RC 70C all as specified and directed.

M&L for conducting the following tests after repairs of transformers of 315 KVA to 750 KVA including submitting the test report. (i) I.R values of HV to LV,HV to Earth and LV to Earth. (ii) winding resistance. (iii) Ratio test (iv) No-load test (v) Short circuit test (vi) Dielectric strength of oil (vii) Transfomer tap switch positions Note: contractor shall arrange all measuring instuments/equipment for testing of transformer.

Taking down the defective air breathers from the transformers, supply and fix new breathers with flange type 1/2 Kg bottle suitable for step down distribution transformers of any make and capacity ranging from 63 KVA to 160 KVA including filling of new silica gel in breathers complete all as specified and directed.

Taking down the defective air breathers from the transformers, supply and fix new breathers with flange type 1 Kg bottle suitable for step down transformers of any make and capacity ranging from 315 KVA to 500 KVA including filling of new silica gel in breathers complete all as specified and directed.

Taking down the defective air breathers from the transformers, supply and fix new breathers with flange type 2 Kg bottle suitable for step down distribution transformers of any make and capacity ranging from 630 KVA to 1500 KVA including filling of new silica gel in breathers complete all as specified and directed.

Supply, fix and connect panel mounting type battery Charger with transformer diode operated (not PCB) 24 Volts, 30 Amps including removing the unserviceable all as specified and directed. Make : ELAK/Servo

Supply and topping up transformer oil conforming to IS: 335 (1993), dielectric strength not less than 60 KV at 2.5 mm gap in various capacities distribution transformers installed at various indoor and outdoor sub stations complete all as specified and directed. Make: Power oil/SERVO/Castrol/Shell.

Dehydration of transformer oil of various capacities distribution transformers installed at various indoor and outdoor transformers with ultra high vaccum filtration machine to obtain the dielectric strength of 60 KV at 2.5 mm gap complete all as specified and directed.

Supply and fix cable jointing kit for 11 KV (Earthed) grade Indoor/Out door cable for heat shrink type End Joint complete with jointing material and accessories suitable for 3 core XLPE armoured Al conductor cable of size 120 Sqmm to 185 sqmm

Supply and fix cable jointing kit for 11 KV (Earthed) grade Indoor/Out door cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Al conductor cable of size 50 Sqmm to 95 sqmm

Supply and fix cable jointing kit for 11 KV (Earthed) grade Indoor/Out door cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Al conductor cable of size 120 Sqmm to 185 sqmm

Filtration of transformer oil of 132/11 KV, 8 MVA transformer with ultra high vaccum filtration machine to obtain the dielectric strength of 60 KV at 2.5 mm gap complete all as specified and directed.

Disconnecting the electric supply, removing the old burnt out/unserviceable wiring and replacement of control wiring using 2.5 sqmm PVC insulated flexible, stranded copper cable for 132/11KV transformer trip supervision relay and 11 KV main incommer complete all as specified and directed.

Inspection of control wiring of on load tap changer (OLTC) panel of any capacity of transformer and repairs to operating mechanism including cleaning of entire OLTC mechanism at panel and transformer side complete all as specified and directed.

M&L, locating fault in 11 KV HT underground cable of any sizes with the help of fault locator vehicle organized from TSSPDCL/TSTRANSCO by injecting necessary high voltage to the faulty cable within 12 hours of time from time of reporting of fault all as directed by Engineer in Charge. Note: Quoted rate shall deemed to be included the necessary charges towards liaisoning for arranging fault locating vehicle, transportation of trained technicians and charges payable to Electricity Department.

Disconnecting and removing of the burntout Automatic change over switch 1250 Amps, 4 pole, 415 volts 50 HZ from the existing position, supply and fixing new Automatic change over switch in SS enclosure includidng making connection, 1250 Amps, 4 pole, 415 volts, 50 HZ and testing complete all as directed. Make Standard/Havells/HPL/L&T

M&L for painting to body of distrubution transformers of capacities ranging from 63 KVA to 160 KVA installed at various indoor and outdoor substations including connected LT Bus duct from transformer to LT Panel board with one coat of synthetic enamel Grey paint using spray gun machine after removing all dust and rust and writing date of painting with black synthetic enamel paint complete all as directed by Engineer-in-charge. Make of paint : Shalimar /Asian/Berger

All as per item No 35 above but of capacity 315 to 500KVA

All as per item No 35 above but of capacity 630 to 1500KVA

SUN LIGHT HOUSE

Maruthi international