REPAIR AND COMPREHENSIVE MAINTENANCE OF TRANSFORMER VCB PANEL HT CABLE AND CONNECTED ITEMS AT AF STATION OJHAR

Amount

Material and labour for Onload filtration and dehydration of transformer oil by on load filtration plant machine to achive minimum 40 KV dielectric strength complete and testing the dielectric strength and contents of acid before and after filtration at different locations of 11 KV / 440 V installations all as specified and as directed.

Material and labour for filling only new transformer oil with minimum dielectric strength 50 KV for topping up or replacement of transformer oil in the OCB, Oil switch, transformers 11 KV / 440 V at different locations during the process of filtration, complete all as directed and specified.

Supply and fix in repairs brass stud as per existing size of suitable length and size for LT side of 440V step down transformer terminals with brass nuts and oil seal etc., suitable for 200 to 500 KVA, complete all as specified and as directed.

All as per item No. 3 herein before but for HT side suitable for 200 to 500 KVA.

Supply and fix porcelain bushing alongwith rubber seal / gasket for the stud suitable for LT side Volt step down transformers of any type and capacity, suitable for 100 to 500 KVA complete all as directed.

Material and labour for opening of top cover of transformer of rating 100 to 500 KVA, changing main gasket of transformer and other gasket set including replacement of unservicable nuts and bolts, washers with accessories etc. checking of gasket after fitment and rectify the leakage if any complete all as specified and directed.

Material and labour for opening of top cover of transformer of rating 500 to 1000 KVA, changing main gasket of transformer and other gasket set including replacement of unservicable nuts and bolts, washers with accessories etc. checking of gasket after fitment and rectify the leakage if any complete all as specified and directed.

Material and labour for replacement of silica gel in breathers of transformers of various capacities including taking down of unserviceable silica gel complete all as directed.

Supply and fix for breather assembly air tight made out of metal body and transparent acrylic glass suitable for 100 to 400 KVA transformer complete all as specified and as directed.

Supply and fix dial type thermometer for measuring winding /oil temperature of transformer and including taking down old unserviceable dial type thermometer from the pocket to safe custody complete all as specified and as directed.

Material and labour for maintenance & overhauling of 11 KV VCB including opening, checking, cleaning with CTC, cleaning wiping of insulating component, primary & secondary circuits, spouts, busbars, supports, CT, PT, cleaning contact tips, cover the expossed portion of busbar with HT tape & heat shrinkable sleeves, spout insulators for visible crack, tightness of fasterners holding moving contacts, check & correct the buffer gap adjustment & mechanism settings, meters. Testing and calibration of all relays fitted in control panels from authorized testing team of the OEM, such as earth fault relays, over current relays fitted in HT 11 KV panels for its corrections & setting with main control panel relays & MSEDCL so that individual VCB shall be tripped prior to main panel, contractor shall submit testing and calibration report showing all set parameters. Testing, cleaning & overhauling of complete operating mechanism for smooth functioning, checking of control panel wiring for operation & protection for tripping & closing & rectifying the defects all equipments including Deoxidizing of all electrical contacts replacement unserviceable wiring with ferrule & lugs, reassembling & testing of complete VCB all as directed specified and directed by Engineer in Charge . Note:- i) Required spare parts for replacement will be measured and paid under relevant items as supply only.(Item No-20,21,22,25,31,32,33,34,42 & 45) ii) Cost of Labour for replacement is deemed to be included in the quoted rate. Iii) Repair work to be carried out by OEM authorized agency only.

Material and labour for maintenance & overhauling of 11 KV OCB including opening, checking, cleaning, wiping of insulating component, primary & secondary circuits, busbars, supports, CT, PT, cleaning contact tips, cover the expossed portion of busbar with HT tape & heat shrinkable sleeves, cleaning of oil tank, tightness of fasterners holding moving contacts, check & correct the buffer gap adjustment & mechanism settings, meters, & Testing and calibration of all relays fitted in control panels from authorized testing team of the OEM, such as earth fault relays, over current relays fitted in HT 11 KV panels for its corrections & setting with main control panel relays & MSEDCL so that individual OCB shall be tripped prior to main panel, contractor shall submit testing and calibration report showing all set parameters, testing, cleaning & overhauling of complete operating mechanism for smooth functioning, checking of control panel wiring for operation & protection for tripping & closing & rectifying the defects all equipments including Deoxidizing of all electrical contacts replacement unserviceable wiring with ferrule & lugs, reassembling & testing of complete OCB all as directed specified and directed. Existing make: Crompton greave Note:- i) Required part for replacement will be measured and paid under relivant item as supply only. (item 14 to 49) ii) Cost of Labour for replacement is demed to be included under this item. Iii) Repairs to be carried out by OEM Authorized agency only.

Supply Only Trip Catch Assembly as per existing make.

Supply Only Trip Shaft Assembly as per existing make.

Supply Only Closing Shaft Assembly as per existing make.

Supply Only Spring charge Indicator Assembly as per existing make.

Supply Only Motor cut off limit switch Assembly as per existing make.

Supply Only Spring charging handle as per existing make.

Supply Only Closing Coil Assembly, DC 24/30 Voltage as per existing make.

Supply Only Tripping Coil Assemblyy, DC 24/30 Voltage as per existing make.

Supply Only Auxiliary switch 6 NO/6NC as per existing make.

Supply Only Indicating VCB Lamps LED type (except blue colour) of Shape & Size as per existing including required necessary modification and electrically connecting & testing for its proper functioning complete all as directed. Make: TENICK / L&T or equivalent .

Supply Only Blue colour VCB Indicating Lamps LED type of Shape & Size as per existing including required necessary modification and electrically connecting & testing for its proper functioning complete all as directed. Make : TENICK / L&T or equivalent.

Supply only Push Button element with one NO / NC Make : TENICK / L&T or equivelent.

Supply only HRC Fuse for PTs 11 KV capacity 1 to 16 Amp as per existing make.

Supply only Current Transformer duel core Class - 5 P 10 & Class - I, VA - 15, 11 KV 200/100/5 Amps resine casting as per existing make.

Supply only spring charging motor retrofitting suitable for 11 KV VCB (CG), as per existing make.

Supply only warm Gear Wheel with Main Shaft Assembly any type as per existing make.

Supply only Vaccum Interruptor as per existing make.

Supply only set of isolating Contact 800 Amp as per existing make.

Supply only Insulating Drive Rod as per existing make.

Supply only Mecahnical interlock as per existing make.

Supply only main Shaft interlock bolt as per existing make.

Supply only insulated VI Seprators phase barrier as per existing make.

Supply only Big Cam Assembly , VCB, as per existing make.

Supply only Closing Spring Assembly as per existing make.

Supply only Tripping Spring Assembly as per existing make.

Supply only 32 pin plug socket Assembly as per existing make.

Supply only TNC switch as per existing make.

Supply only L/R switch as per existing make.

Supply only Anti Pumping Device as per existing make.

Supply only Z-Z Micro Switch as per existing make.

Supply only support Insulator as per existing make.

Supply only Drive link with Adjuster as per existing make.

Supply only Test service Limit Switch as per existing make.

Supply only Power Pack unit with maintenance free batteries in sheet metal enclosure suitable for 11 KV VCB (CG) input voltage 230 V and outout voltage 24/30 V DC as per existing make.

Supply only (VCB panel) Heater single phase with thermostate control as per existing make.

Supply and fix three phase over current & earth fault relay, Model- MC-61A, with 3 phase O/C + E/F + High set, 50/51 RYBN, Numerical Relay, Lowest O.C-1s, Highest O/C-1hs, Lower D/F-0s, Highest E/F Ohs, including calibration of relay with existing system so that fault can be arrested in individual panel, complete all as specified and directed. Make : L&T/CG/ Siemens.

Material and labour for maintenance & servicing of voltage stablilizer 75 KVA three phase 440 V for sub station/ section Indoor type after disconnecting incoming & outgoing LT connection / Earthing and opening the voltage stabilizer complete and cleaning throughly, removing, cleaning old gasket and replacement with new gasket and servicing of servo motors as recommonded by the manufacture insulating properly with genuine material, and stablizer body gasket reassembling the voltage stabilizer with and repair /maintance of volt meter, Am meter, PF meter, indicator lamp RYB, servo motor, resitance contact and remounting on foundation, complete with connecting back all removed electrical earth connection and testing on completion of functioning of the Voltage Stabilizer complete all as specified & directed .

Maintenance of GOD fixed on two pole structure including cleaning the parts and replacement of jumper, greasing with silicon grease, alligning of GOD knife and tightening of GOD parts complete all as specified and directed

Dismantling of old and unservicable cross arms and Material and labour for cross arms, bracings, supports, clamps and back plates fabricated from strucural steel sections including nuts, bolts, washers,welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated, with & inclusive of one coat red oxide primer & one under coat and one finishing coat of synthetic enamel paint after preperation of surfaces complete all as specified & as directed .

Supply and fix in reapairs Air Break switch, gang operated triple pole mechanically operated mounted on insulator and steel frame with operating mechanism and locking arrangement worked from ground level for current rating up to 200 amps,11000 volts all including fix and moving contacts, post insulators, operating rod, handle etc complete with necessary connections/ jumpers with suitable ACSR / copper conductor with heavy duty alkathine pipe complete all as specified and as directed. Make: Jaipuria/ Pactil/BHEL/ATLAS or equivalent

Supply and fix in repairs pin type porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut 150mm height, 150 mm dia for 11000 volts grade on existing cross arms on HT poles all as specified and directed

Supply and fix in repairs (HT) lightening arrestor expulsion type complete with all fittings, 65 kilo amps discharge capacity working pressure 11000 volts, distribution class including inter connecting with & including GI Strip 25X4mm. duly insulated on pole upto test point complete all as specified and directed

Excavation in trenches not exceeding 1.50 mtr wide and not exceeding 1.50 meter in depth and getting out in soft/loose soil all as specified and directed.

Removing of surplus soil not exceeding 50 meter and depositing where directed at a level not exc 1.50 mtr above the starting point all as directed.

Returning, filling in trenches including spreading leveling, watering and well ramming in layers not exceeding 25 cm by using excavated soil all as directed.

Supply and laying in trenchs or passing through pipe, fixed to pole or as indicated at site, commissioning and testing XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured electric power cable (heavy duty) with stranded aluminium conductor,11000 volts, grade of size 3 core 120 Sqmm ncluding taking out U/S HT cable complete all as specified and as directed.

Supply and laying Double walled corrugated (DWC) Duct (Dura-Guard) of size 90 mmas per IS 14930 Part-II for HT UG cable protection including coupler, elbows, T-Joints, Bends, etc and test report Make :Dura-Line/ Gemini/ Rex.

Supply and fix jointing and testing in replacement of old and unservicable end kit on pole etc and fixing with clamps made out of Flat iron of size 40x5mm and commissioning at site, with cable jointing kit for 11 KV(earthed) grade cable for end termination out door type heat shrink type joint complete with jointing matrial and accessaries suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm complete all as specified and as directed.

All same as per item no.62 here-in before but cable of size 120 Sqmm to 185 Sqmm.

All same as per item no. 62 here in before but for indoor type end termination joints for cable size of 50 to 95 Sqmm.

All same as per item no. 62 here in before but 120 sqmm to 185 sqmm

All same as per item no. 62 here-in before but for straight through type joints for 50 to 95 Sqmm cable.

All same as per item no. 62 here-in before but for straight through type joints for 120 to 185 Sqmm cable.

Supply and fix in replacement 80mm dia bore galvanized iron tubing, light grade including all fitting as in cable protection laid in floor or fixed to poles with clamps etc complete all as specified and directed.

Material and labour for locating under ground cable fault within 06 hrs including Sunday or any holiday using cable holding fault locator taking all necessary precautions complete all as directed. Note : If fault not located by the contractor within specified time a recovery of an amount of Rs. 5000/- will be recovered per day.

Painting of transformer 11KV/433V , Indoor/Outdoor type , with one Coat of Synthetic enamel paint over a coat of red oxide primer after cleaning , scraping , and filling of carities for out side complete including writing SM Nos & and MES No . On Transformer boday with letters with white synthetic enamelled paint complete all as per specified asd as directed of the following Capacity.

500 KVA to 315 KVA

250 KVA to 200 KVA

100 KVA to 25 KVA

Material and labour for manual scraping of old painted surface and providing spray painting as per existing colour with one coat of synthetic enamelled paint on inner and outer surface of VCB including writing SM No and MES No. on VCB Body, complete all as directed

Supply and fixing mild steel plates chequerred channels, square cut or notched ( ordinary and counter sunk) forming holes without any attachment of steel Fe - 410W ( Gde-E-250) quality - B as in florring and is supproting members of required size and section duly cutting and welding with foundation etc complete all as directed .

Supply, installation, testing and commissionig in repair of 30 volt, 100 AH battery bank (15x2 Volt each battery) at 10 Hrs discharge rate, self contained, floor mounted, sheet steel, cabinet with two tiers for housing and including low maint batteries, Make: Exide - Model No. UPST-24V-80Ah - sealed maintenance free VRLA battery, initialy charged complete with all accessaries suitable for charging equipments of HT VCB, operated from 415 v, 3 phase, 50 Hz ,AC supply omplete all as directed . Make : Exide, Luminous, Amron.

Material and labour for Reparing ,welding / Fabricaion Electrical panel with CRCA sheet 3 MM including hinges & doors & Panting manual scraping of old painted surface and providing spray painting as per existing colour with one coat of synthetic enamelled paint on outer surface body of following size of LT Panel Sets complete all as directed .

Material and labour for cable joint/root indicator casted in 350x200x50mm PCC tile duly engraved with 'HT CABLE/LT CABLE / HT CABLE JOINT" in letters duly fixed into the ground with to th minimum depth of 450 mm, PCC casting (1:4:8), type D2 with 20 mm graded stone aggregate minimum size of PCC,duly painted, complete all as specified and as directed

Material and labour for plain cement concrete 1:4:8 type D2 using 40mm garded stone aggregate as in coping concrete on floor/wall etc all as specified and directed.

Demolision of cement concrete road/ surface of any in posation not otherwise specifically provided for and removing of rubbish, complete all as directed.

(f) The description/size/Qty of items mentioned in above are for indicative only how ever the qty/size may very at site condition to maintain the earth resistance less than 03 ohm and as such quoted rates should be considering the all factors. (g) Testing on completion & achiving resistance less than 03 ohm & submitting report to Engineer-in Charge duly signed by user after seccessfull completion of earthing whytime after euevution up to end of defect liabuility perioed. (h) If resistance value is found more than 4 ohm, contractor has to do additional earthing with in 07 days without any extra cost. (j) Earth strip copper of size 32x6mm beyond 7.5Mtr will be measured and paid seprately under respective iotem of schedule.

Material and labour for Boring of holes under Road, Pavements, Hard Standing by trench less technology at a depth 0.6 Mtr from top surface including supply and fix HDPE pipe of 150 mm dia suitable for 0.4 MPA working pressure complete all as specified and directed

Material and labour for flex fiber board of min thinkess 5mm , digitally printed with letters / images as per sample for insatalation in different E/M instalatoin / office complex oll as specified and directed

Note : The amount against Schedule of Credit on Page No. 34 shall be deducted from the total amount quoted against Sch 'A' while deriving lum Sum for Acceptance.

SHRI SULAI ELECTRICALS

KOYNA ENGINEERS PVT LTD

Paras Electricals

United Enterprises

DURGAI ELECTRICALS