REPAIRS/ MAINT SERVICING TO 33 KV INSTALLATIONS AND OH LINES CHETTRI SUBSTATIONS AND COMMAND CAMP SUBSTATION UNDER GE (UTILITIES) UDHAMPUR

Amount

Taking down the Power Shut down from Source, Material and Labour for 33 KV yard painting with one coat of synthetic enamel paint as required and writing the designation of equipments in english alphabets / letters as specified & as directed by Engr-in-charge and mainly the following:- (i) Transformer 33/11 KV of capacity 6.3 MVA-01 No (ii) Structure - 01 No (iii) Duct cover - 30 Mtrs OLTC boxes- 01 No Mast conductor.

Taking down proper shut down from sub station and Scrapping the two pole structure with Emery Paper after that Painting of 33KV HT pole 13m (set of two pole structure including the MS Channel / angle iron) with one coat of Red oxide and after that two coat of Aluminim paint. White washing of foundation and Marking on pole with Glow sign/ Paint sticker showing the Pole no and source of supply complete all as specified and directed.

Taking down the unserviceable / damaged Rubber mats from the substation. Supply, lay and utilisation of Rubber matting as per ISI mark 1 mtr x 2 mtr x 30 mm for HT breaker at substation complete all as specified and directed.

Taking down the old corroded / damaged HT Poles from the substation. Supply and fix steel tubular pole (12 m) complete with cast iron base plate, finial taper plug, bolts, nuts & screws as specified type 410 SP-64 complete all as specified & directed. Note : Necessary exacavation, foundation and coping is inclusive of rate quoted by contractor.

Taking down the 33 KV circuit breaker from the system decarbonising the complete circuit system with CTC ( carbon) Tetra chlride). Checking the complete moving / fixed contacts for any loose & retighney. The bus chamber should be inspected for loose joints.

Panel side : 33 KV panel side the circuit sprouts / Bus sprouts has to be checked. Proper closing of sprouts to be checked. Any mechanical imbalance is found to be rectified. Proper DC system has to be checked for functioning indication system & tripping & closing system has to be properly checked and mentioned.

Breaker side : The trowlley to be checked for mechanical fitment inside the chamber, Proper checking of tripping / closing system application of greasing to complete mechanison. Minor repair related to mechanism to be rectified. Are chector. SF-6 punty test to be done on intemptons to maintain dielectric properly of are quenching in breakers.

Following routes test are to be peformed on breaker a) SF-6 gas leakage test. b) Tightness test. c) Design/Visuel test. d) Mechanical operaton test. e) Measurement of resistance of main circuit(or) contract resistant test. f) Dielectric test on auxialry circut & control circut. g) Power freqing over voltage with starter test. Note:- Taking down the numerical relay (33 KV) from the VCB. Primary injector shall be imposed for relays. Plug setting for earth fault, over current installation fault shall be performed with respect to mastering of relay system.

Servicing, repairing and overhauling of 33 KV isolator including cleaning of complete moving and fixed contracts oiling / greasing operating mechanismtightening connections and replacement of unserviceable parts including reassembling the isolator after complete repair, routine and periodical testing complete all as specified and directed.

S & F in repair fixed contact assembly of 33 KV air break switch isolator rotating type complete all as specified and directed.

S & F in repair moving contact assembly of 33 KV air break switch isolator rotating type complete all as specified and directed.

S & F in repair / replacement of HT outdoor type Gang operated POLYMER based rotating type, triplepole, mechanically operated Air Break Switch Volts rating 400 Amp capacity, horizontal mounting, double break, mounted on insulation and steel frame, GI operating rod of suitable length to be worked from ground level including taking down complete as specified and as directed.

S & F in repair / replacement of HT out door type Gang operated rotating type, triplepole, mechanically operated Air Break Switch Volts rating, 400 Amp capacity, horizontal mounting, double break, mounted on insulation and steel frame, GI operating rod of suitable length to be worked from ground level including taking down complete as specified and as directed.

Complete draining out the transformer oil from radiators after closing the inlet valve from main body of 6.3 MVA power transformer including filling transformer oil of good quality having not less than 70 KV dielectric strength, having low viscosity all as specified and directed by Engr-in-Charge. Note: Oil as per IS 335 of 1983 all as specified and testing of Transformer after filling new oil upto 10 Hrs minimum as per entire satisfaciton complete all as specified and directed.

Dehydration & filtration of transformer oil in existing transformers installed at site with portable plant to improve the dielectric strength 70 KV including testing of dielectric strength after dehydration & filteration at site. Note:- (a) Pre-heated oil shall be topped up as required at site before the process; oil will be measured and paid seperately under respective item. (b) Qualified technician for filters of transformer shall be deputed. (c) Transforaton of filtrations from 132 KV sub station to 33 KV S/S is deemed to be included in rate quoted by Contractor.

S & F in replacement silica gel breathers assembly filled complete suitable for transformer cap 6.3 MVA (As per Sample) complete all as specified and directed.

S & F in replacement of current transformer CT Ratio 150/75/1-1A of 33 KV, 15VA, Core 1, class-0.5, STC 20 KA for 1 sec complete all as specified and directed.

S & F testing and commissioning feeder protection and control relay REF615,50,51 N, 46,49,95 measurement for 3I,I0,4DI+6DO, One Rear RJ 45 port for IEC-61850 protocol, draw out type with CT shorting feature. Graphical LCD display, uaux48-250VDC/100-240 VAC all as specified and directed. Make:- ABB & L&T, Simens, Schneider or equqlent

S & F of Chequr plates / GI sheet / cross arms of MS fabricated complete with all accessories viz nut, bolts, washer etc. including taking down complete all as specified and directed by Engineer-in-Charge.

Pin insulator porcelain viterous brown including 01 galvanized M.S.spindle, two galvanised iron washers and one gal. iron nut suitable for HT 33000 Volts complete all as specified and directed.

Supply, laying, commissioning and testing XLPE insulated screened PVC bedded galvanised steel strip or wire armoured electric power cable (Heavy Duty) with aluminium conductor 33000 volts grade cross sectional area 150 sq mm, 3 core including taking down of U/S Cable complete all as specified and directed.

Supply, laying, commissioning and testing XLPE insulated screened PVC bedded galvanised steel strip or wire armoured electric power cable (Heavy Duty) with aluminium conductor 33000 volts grade cross sectional area 185 sq mm, 3 core including taking down of U/S Cable complete all as specified and directed.

Cable jointing kit for 33 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 185 sqmm to 240 sqmm complete all as specified and directed.

Cable jointing kit for 33 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 150 sqmm to 185 sqmm complete, all as specified and directed.

Cable jointing kit for 33 KV (Earthed) grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 185 sqmm to 240 Sqmm complete, all as specified and directed.

Separator sheet for 33 KV Breaker complete with material and accessories complete all as specified and directed.

Space heat 36 watt for 33 KV breaker complete with material and accessories complete all as specified and directed.

Bus bar suitable Sleeves for 33 KV breaker complete with material and accessories complete all as specified and directed.

Lightning arresters for non linear resistance type for 33 KV normal discharge count 5 Amps and high current impulse withstand 65 Kilo Amps conforming to IS-3070 Part-I for OH line including bracket, clamps, nuts and washers in repairs including taking down complete all as specified and directed.

Taking down the Numerical relay system from HT Breakers (33KV or 11KV). Calibration shall be done by primary injector kit. Necessary plug setting and injector shall be done. Wind load test report for the said calibration to be submitted.

Cutting / trimming of tree branches not exc 10cm girth touching / approaching the HT overhead lines upto 3 metre width on each side with hacksaw/axe to clear the HT line including disposal of trimmed branches 100 Metre away inside the cantonment area & clearing site complete all as specified and directed.

Taking down the unserviceable Battery bank from the substation. Supply, install, test and commissiong of Battery bank VRLA Type Sealed maintenance free operating on 110V DC + 110 V AC with (02 Volts-56Nos. Battries) including Battery Stand & Inter-Connections omplete all as specified and directed.

Taking down the unserviceable Battery Charger from the VCB Panel Supply and fix 110V DC Battery Charger with following specifications : (a) Trickle Boost Facility system inbuilt. (b) Protection system with MCB control 100Amps. (c) 230V AC input charger. (d) Air cooled rectifier. (e) Servo control charger. (f) Battery Charger shall be accommodated with SMPS (Single Modulated Power Supply) system for dual output 110V & 30V for operation of relays and its tripping.

Supply and spreading stone aggregates of size 20mm evenly at outdoor 33/11 KV sub stations after removing uprooting of tiny trees, bushes, beeds, grass, elephant grass, removing poly bags, brick bats, stone pebbles and other debris etc complete all as specified and directed.

vijay builders

PROACH ASSOCIATES BUILDERS & ENGINEERS