REPAIR MAINTENANCE OF TRANSFORMERS SERVO STABILIZERS CONTROL PANELS VCBs CT PT GOD DO FUSES CONTROL CABLES ETC UNDER AGE EM II OF GE NW VASCO

Amount

Comprehensive / preventive maintenance for smooth functioning of step down transformer indoor/outdoor type of capacity 100 KVA to 750 KVA with off load tap changer 11 KV/433 volts grade by performing the following works :- (i) The company technician from reputed company of transformer repairing / manufacturing will visit the installation bimonthly to ensure the smooth functioning of transformer and will provide preventive maintenance / servicing as and when required. (ii) The technician should be from reputed company of transformer repairing company duly qualified and conversant with functioning of transformers (iii) The technician will check the following points:- (a) Checking of minimum and maximum peak load, voltage, current on each phase LT and HT side. (b) Checking of temperature of winding and oil in conservator and transformer. (c) Checking of tightness of all gasket joints including HT & LT cable boxes and checking any leakage of oil. (d) Checking HT and LT end joints at transformed heating, sparking or carbon deposit and loose connections. (e) Checking of connections of marshalling box if installed on transformer and checking of functioning of bushels relay. (contd:- Sr. NO 1.01)

(f) Testing of dielectric strength of transformer oil after every 3 months interval and submit test report. (g) Examination of cracks & loose connections on bushings & terminals (h) Checking of proper working of all indicators/meters/gauges. (j) Testing of earth results after every 3 months interval and submit test report. (k) All test report/check list for each transformer will be imitated by contractor as directed. The cost of stationary/test sheets/register of records deems to be included in unit rate (l) Each DG set maintained shall be measured only one time during the entire contract period and this period shall be of 12 months. (m) The rates quoted shall deemed to be inclusive of all the above provisions.

Draining out complete transformer oil from transformer of from 100 KVA to 160 KVA capacity at site which found major repair and storing the oil in suitable container (container to be provided by the contractor to keep aside for re-use (after repair) and lifting of core assembly by opening of top cover and other items for inspection/examination by GE/AGE E/M and lowering/fixing of core assembly in its original position after inspection to make it ready for transportation to carry out repair work in workshop complete all as specified and as directed.

All as per item no 2 above but of capacity 200 KVA to 315 KVA

All as per item no 2 above but of capacity 400 KVA to 750 KVA

M&L for transportation of unserviceable transformer of capacity from 100 KVA to 315 KVA (with vehicle and hydra crane) to workshop and return back for installation it on original position / location after repairing from workshop (Rate is deemed to be inclusive of transportation, T&P and man power) complete all as specified and as directed.

All as per item no 5 above but of capacity 400 KVA to 630 KVA

All as per item No 5 above but shifting of serviceable transformer (with vehicle and hydra crane) upto 600 KVA from MES store Yard/Sub Stn (indoor/outdoor) for installation in place of unserviceable transformer and back after replacing with repaired transformer complete all as specified and as directed.

M&L for Opening of top cover by unscrewing nut, bolts & washers etc and taking out core assembly from tank by disconnecting from tap changer HT & LT side bushing stud to outside by dismantling the channel and disconnecting star delta connection of transformer having capacity from 100 KVA to 160 KVA complete all as specified and as directed.

All as per item no 8 above but of capacity 200 KVA to 315 KVA

All as per item no 8 above but of capacity 400 KVA to 750 KVA

M&L for Removing the lamination in proper manner carefully for taking out serviceable/ unserviceable HT/LT coils from the limbs of capacity from 100 KVA to 160 KVA transformer complete all as specified and as directed.

All as per item no 11 above but of capacity 200 KVA to 315 KVA

All as per item no 11 above but of capacity 400 KVA to 630 KVA

M& L in repairs for rewinding of HT coils with copper wire DPC/super enameled high quality matching with existing gauge and impedance including requisite insulating paper/material in each layer of winding after taking down old existing winding of HT leg coils complete all as specified and as directed. Note:- For srl item No 11 to 15 The rate quoted against these items is inclusive necessary provision and cost of all types of insulating materials and heating/ varnishing etc.

All as per item No 14 above but LT coils with copper strips.

M& L for Inserting of HT/LT coils on limbs reminded here in before/old after cleaning of lamination in proper way and also after insulating the limbs with requisite insulating materials on limbs in between limbs/coils upto 100 KVA to 160 KVA capacity transformer complete all as specified and as directed.

All as per item no 16 above but of capacity 200 KVA to 315 KVA

All as per item no 16 above but of capacity 400 KVA to 750 KVA

M& L for Re-arranging the top lamination over coils in proper manner including fixing of channel soldering in between coils as necessary and brazing of star delta connection with tap changer from 100 KVA to 160 KVA capacity transformer complete all as specified and as directed.

All as per item no 19 above but of capacity 200 KVA to 315 KVA

All as per item no 19 above but of capacity 400 KVA to 750 KVA

M& L for Baking the core assembly in the oven duly varnishing the coil to improve IR value and to eliminate moisture content from 100 KVA to 160 KVA capacity transformer complete all as specified and as directed.

All as per item no 22 above but of capacity 200 KVA to 315 KVA

All as per item no 22 above but of capacity 400 KVA to 750 KVA

M& L for Inserting the core assembly after baking in the tank (before inserting tank to be cleaned by removing all deposit sludge etc including drying) and making connection with HT/LT bushing studs and closing the tank top cover by fixing of suitable size of nut, bolts and washers for transformer of capacity 100 to 750 KVA complete all as specified and as directed. (Top cover gasket will be measured and paid separately). Note:- (i) Repairing of transformer have to be completed within 15 days duration. If the contractor has fails to repair the transformer with in 15 days contractor has to provide another same capacity of transformer without extra cost. (ii) In case the defective / unserviceable transformer not repaired & installed on site with in specified period of 15 days from the date of handing over to contractor, a penal recovery @ 5000/- per day will be charged from his dues.

Supply and fixing in renewal of porcelain transformer bushing on LT 1.1 KV side including brass stems conical bush and gasket for indoor / outdoor transformer of the following capacity :-

Capacity of 100 KVA to 315 KVA.

Capacity of 400 KVA to 750 KVA.

Supply and fixing in renewal of porcelain transformer bushing HT 11 KV including brass set stems conical bush and gasket for indoor/outdoor transformer of following capacity complete all as specified and as directed by Engineer-in-Charge.

Capacity of 63 KVA to 315 KVA.

Capacity of 400 KVA to 750 KVA.

S&F in renewal of breather assembly by replacing old breather assembly with new one including fixing in proper manner for indoor/outdoor transformer of the following capacity :-

Capacity of 100 KVA to 315 KVA.

Capacity of 400 KVA to 750 KVA.

S&F in renewal of breather assembly 5 Kg of 33/11 KV step-down transformer by replacing old breather assembly with new one including fixing in proper manner for outdoor transformer complete all as specified and as directed.

Supply and changing Silica gel from breather after heating till requisite/desired colour is achieved complete all as specified and as directed.

ON load centrifuging and dehydration including filtration and cleaning of transformer oil by dehydration machine electric operated without any shutdown of transformer including testing oil sample before and after dehydration and dehydration and filtration oil complete all as specified and as directed. Note:- (i) Dielectric strength of oil after dehydration shall be more than 45 KV at 2.5 mm gap on load. (ii) Transformer oil required for top up shall be measured and paid separately. (iii) Contractor have to arrange the dehydration machine and testing kit from his own resources without any extra cost. (iv) The work will be carried at different locations in cant area. Necessary transport arrangement for shifting machine from one place to another to be arranged by contractor and cost of same to be included in unit rate.

M&L for spray painting of transformers located at various locations with two coats of synthetic enamel paint first quality of approved colour/shade after preparation of old painted surface to entire satisfaction of Engr-in-charge incl writing SM and MES Nos for the capacity of transformer from 100 KVA to 200 KVA complete all as specified and as directed. Note :- The work will be carried at different locations in cantt area. Necessary transport arrangement for shifting machine from one place to another to be arranged by contractor and cost of same to be included in unit rate complete all as specified and as directed.

All as per srl item No 32 above but for the capacity of transformer 250 to 750 KVA capacity

Supply, installation, testing and commissioning of lightening arrester SMX type complete with all fittings transmission class, 36 KV 10 KA 50 Hz suitable for system voltage 33/36 KV complete all as specified and as directed. Make : Oblum/ ELPRO/ Pactil/ AREVA/ Crompton Greaves/Jaipuria.

Disconnecting H.T supply and servicing of 33 KV line Vacuum circuit breaker (Make-Crompton Greaves/ ABB or other existing on site) of capacity 630/800 Amps and rating 36 KV by cleaning, decarburizing the moving contact points, cleaning with CRC, checking proper operation of moving parts, removing foreign /dust particles from spout gear mechanism and moving parts, repair to motor charge spring mechanism, checking of DC supply wiring, parts tightening all nuts and bolts of components, lubricating moving parts with petroleum jelly in the breaker as directed and testing complete and keeping it on load complete all as specified and as directed.

M & L for disconnecting & taking out old/defective Current Transformer from 11 KV VCB panel, indoor, resin cast epoxy type of 18.4 KA/Sec having ratio 100/5+5 Amps or 60/5+5A or 30/5+5A suitable for metering and protection equipment installed on control panels including connection with control cables as per site requirement upto control panels terminals block and fixing on bus bar section having class of accuracy 5P 10 burden 15 VA complete all as specified and as directed.

M & L for disconnecting & taking out old/defective PT from 11 KV VCB panel, S & F installation & testing of PT, indoor, comprising of three limbs single phase resin cast PTs of 11KV/110 Voltage ratio, 50 Hz type 200VA class-I accuracy suitable for protection & metering incl making suitable arrangement for fixing in existing VCB panel and connection complete all as specified and as directed.

Supply & fix in replacement digital four pole non directional microprocessor based 3 over current + 1 Earth fault with instantaneous trip relay with high set, Aux. supply 20-110 volt DC and setting of time delay, overload and earth fault model MC 61C of complete with all connection and testing on load including fabrication works to HT panel for fixing of new relay and wiring connection complete all as specified and as directed.

M&L for disconnecting power supply from HT VCB /HT panels of capacity 11 KV for repair works, taking out trolley unit & complete servicing of the VCB through decarburizing, cleaning the male / female isolating contacts, lubricating moving part, cleaning with CRC removing dust particles from bus bar chamber, spout gear mechanism and moving parts, repair to motor charge spring mechanism, tightening all nuts and bolts of entire trolley, checking proper operation of trolley, inserting trolley inside and testing on load complete all as specified and as directed.

M&L for servicing, calibration of all type control relays such as digital earth fault/over current relay , IDMT relay, master trip relay other Aux relays, etc fixed on 11 KV VCB/OCB/RMU for over current and earth fault settings with all respects and making all tripping setting, time delay setting, for smooth functioning of all controls of HT panel including servicing of CTs, PTs, testing with primary injection test kit for load settings and timings of relays, setting tripping and closing of VCB/RMU/ SF-6 breakers complete all as specified and as directed. Make of HT VCB/RMU /OCB are Crompton/ABB/&T/C&S /Jyothi or as per existing design approved by GE.

S & F in replacement of vacuum interrupter, suitable for 11 KV HT V.C.B 11 KV 630 /800 Amps capacity cat No. 520/SP of complete all as specified and as directed. Make Crompton/ABB/L&T or as per existing design approved by GE.

S & F in replacement fixed contact block of V.C.B 11 KV 630/800 Amps capacity cat No. 522/SP complete all as specified and as directed. Make Crompton/ABB/&T/C&S /Jyothi or as per existing design approved by GE.

S & F in replacement moving contact block of V.C.B 11 KV 630 /800 Amps capacity cat No. 524/SP complete all as specified and as directed. Make Crompton/ABB/&T/C&S /Jyothi or as per existing design approved by GE.

S & F in replacement motor & gear assembly 220 Volt AC motorised mechanism of V.C.B 11 KV 630/800 Amps capacity including testing & putting on load cat No. 537/SP complete all as specified and as directed. Make Crompton/ABB/&T/C&S /Jyothi or as per existing design approved by GE.

S & F in replacement closing coil assembly 24/ 110 volts DC for HTV.C.B 11 KV 630/800 Amps capacity cat No. 594/SP complete all as specified and as directed. Make Crompton/ABB/&T/C&S /Jyothi or as per existing design approved by GE.

S & F in replacement tripping coil assembly 24 / 110 volts DC for HT V.C.B 11 KV 630/800 Amps capacity cat No. 599/SP complete all as specified and as directed. Make Crompton/ABB/&T/C&S /Jyothi or as per existing design approved by GE.

S & F in replacement auxiliary switch (6 No + 6NC) for HT V.C.B 11 KV 630/800 Amps capacity cat No. 562/SP complete all as specified and as directed Make Crompton/ABB/&T/C&S /Jyothi or as per existing design approved by GE.

S & F in replacement contact plug 630/800 Amps for HT V.C.B 11 KV 630/800 Amps capacity cat No. 580/SP complete all as specified and as directed Make Crompton/ABB/&T/C&S /Jyothi or as per existing design approved by GE.

S & F in replacement big cam with main shaft for HT V.C.B 11 KV 630/800 Amps capacity cat No. 568/SP complete all as specified and as directed Make Crompton/ABB/&T/C&S /Jyothi or as per existing design approved by GE.

S & F in replacement of 11 KV Silicon polymeric composite Disc insulator B&S type incl galvanised mild steel strap 38 mm X 5 mm, insulator bolts 20 mm dia with suitable washers and nut, suitable for working pressure upto 12 KV as per IS 731/1971 or latest amendment complete all as specified and as directed.

S & F in replacement of 11 kv silicon polymeric pin insulator, including one galvanized mild steel spindle two galvanised iron washers and one galvanised iron nut,11000 volt grade suitable for working pressure 12 KV as per IS 731/1971 or latest amendment complete all as specified and as directed.

S & F and replacement of cross arms, bracing, supports clamps and back plates fabricated from structural steel sections incl nuts & bolts, washers, welding bending cold or hot, drilling holes for bolts in any shape or size and inclusive of one red oxide primer coat, one under coat and one finishing coat of synthetic enamel paint complete all as specified and as directed.

Disconnection of faulty HT 11 KV cable of any size from both ends, testing of cables with HT megger or high voltage DC testing machine and locating the fault in the cable by arranging fault locating Machine (FLC) to pin point at the exact position of fault including the cost for transporting machine at various locations with T&P, manpower and standby power supply for testing of cable complete all as specified and as directed. (Cost also includes for providing transportation of fault locating machine at different sites as per requirement).

Disconnection of faulty LT 1100 volt cable of any size from both ends, testing of cables with HT/LT megger or high voltage DC testing machine and locating the fault in the cable by arranging fault locating Machine (FLC) to pin point at the exact position of fault including the cost for transporting machine at various locations with T&P, manpower and standby power supply for testing of cable complete all as specified and as directed.( Cost also includes for providing transportation of fault locating machine at different sites as per requirement). Note for item No 54,55:- The contractor will be intimated on phone followed in writing for faults in HT/LT UG cables. Contractor has to attend site and arrange to bring FLC machine on site within 48 hrs to locate the fault. If the contractor failing to bring the FLC machine for location of faults a penalty of Rs 3000- per cable per day will be charged from his dues.

Supply and filling Transformer oil confirming to IS-335 (as in toping up or replacement) of 50 KV breaking capacity complete all as specified and as directed. Note :- The work will be carried at different locations in cant area. Necessary transport arrangement for shifting machine from one place to another to be arranged by contractor and cost of same to be included in unit rate. Contractor will bring new oil in sealed container and cot of same will included in unit rate complete all as specified and as directed.

Supply, laying and testing in replacement of cable XLPE insulated, screened, PVC bedded galvanized steel strip or wire armoured electric power cable (heavy duty) 1100 V grade with multi stranded aluminium conductor of size 70 sqmm 3.5 core as per IS 7092 Pt-I complete all as specified and as directed.

All as per item No 56 here in above but of size 25 sqmm 4 core.

All as per item No 56 here in above but of size 16 sqmm 4 core.

M&L for steel tubing galvanised, light grade ISI marked, complete with fittings laid in trenches/fixed along with poles etc as protection to cables of size 50 mm dia bore complete all as specified and as directed.

M & L for road cutting incl excavation in trenches for laying HT UG cable in pipe not exc 45 cm wide and n.exc 60 cm depth or as per site requirement for laying of GI pipe 100 mm dia light grade & making good the disturbed surfaces with cement concrete (1:3:6) type C-1 and top surface neatly finished as per existing to match with the existing complete all as specified and as directed. Note:- 80 mm GI pipe (light grade) will be paid and measured under separate item . The cut /excavated surface will be repaired on same day with PCC failing which a penality of Rs 500 per day will be recovered from contractor dues.

Excavation in trenches in any type of soil not exc 1.5 mtrs wide and not exc 1.5 mtr in depth for laying of pipe/ cables/ poles etc and getting out hard & densile soil complete all as specified and as directed.

Returning fitting in any type of soil including spreading leveling watering and well ramming in layers n.exc 25 cm complete all as specified and as directed.

Removing excavated soils to a distance n.exc. 50 mtr and depositing where directed at a level not exc 1.5 m above the starting point complete all as specified and as directed.

M & L for laying of fine, clean sand (river sand) free from sharp materials and stone particals in trenches for cushioning of cable 8 cm thick under cable and 15 cm thick over the cable including gently punning complete all as specified and directed. Note:- The total thickness of sand shall be measured 18 cm after punning.

Supply and laying un-reinforced precast. Concrete cable protection cover of class LV, type-1, flat size 250mm x 150mm x 40 mm, factory made complete all as specified and as directed.

S&F for replacement & testing commissioning of outdoor type bus bar cubical panel board made of 3 mm CRCA MS sheet outdoor type of size 110 cm x 80 cm x 40 cm, 4 Nos of aluminium bus bar of 300 Amp capacity colour coded heat shrinkable sleeves and mounted on DMC/Epoxy insulator with MCCB 4 pole of Capacity 200 Amp 25 KA (Ics =Icu=100%) including one coat of red oxide powder coated finish , mounted on angular frame work of 50x50x5mm thick angle iron base frame, minimum 60 cm high and fixed with PCC 1:4:8 type D-2 (using 40mm graded crushed stone aggregate) in foundation for fixing panels, complete all as specified and as directed. Make - Mac layers/shalabh/Universal switch gear

Shree Ayyappa Engineering (BID ID -3360882)

Shine Enterprises (BID ID -3368952)