REPAIR/ MAINTENANCE OF VARIOUS TYPE OF POWER AND DISTRIBUTION TRANSFORMER, HT BREAKERS AND CONNECTED WORKS UNDER GE (CME) KHADKI

Amount

M&L for filtration/dehydration transformer (voltage grade 22/11, 22/0.433 & 11/0.433 KV ) indooor/outdoor type, mounted on 2/4 pole structure/plinth/substation at site/work shop by dehydration/filtration plant to achieve dielectric strength of 40 KV at 4 mm gap complete all as specified and directed by Engr-in-charge. Note : 1. Contractor is responsible to arrange filtration plant and rate for the same is included in this item. 2. DG set required for operation of filtration plant shall be arranged by the contractor and rate for the same is included in this item. 3. Any damage occurred to transformer during the process of dehydration shall be made good by the contractor to the entire satisfaction of the Engr-in-Charge at his own expenses.

Supply and pouring new transformer oil as per IS : 335 (1993) for transformers installed at various site for topping up after dehydration to achieve the di electric strength 60 KV at 4 mm gap, complete all as specified and as directed by Engr-in-Charge. Note : Transformer oil shall be brought at site in sealed container from the original manufacturer and shall be opened in front of Engr-in-charge, Container shall be deposited by the contractor to the deptt, which will be returned after completion of contract.

M&L for disconnecting the HT & LT connections and taking down of existing Indoor/Outdoor transformer mounted on 2/4 pole structure/plinth/substation for of opening of top cover in situ or at wksp by unscrewing all nuts, bolts & wahsers draining out transformer oil upto required level and keeping in clean container for replacement of HT/LT bushings, for repair of tap changer gas kit, for lifting of core assy, for cleanning/repair and refixing complete with new cork sheet gasket, existing/new nuts, bolts & washers for transformer indoor/outdoor type, refilling of oil all as specified and directed for transformer capacity 11/0.433 KV upto 500 KVA Note for item No 3 to 5 (a) HT/LT bushings studs, nuts, bolts & washers required new measured separately. (b) The rate quoted for the item includes the following :- (i) Arrangement of manpower, tools , plants , crane and recovery vehicle for transportation and shifting of transformer to work shop and back if found defective. (ii) Toping up of transformer oil, replacement of transformer oil as required basis under intimation to the department (Transformer oil will be measured and paid seperately).

(c) Re-winding of transformer and replacement of defective part will be carried out only after inspection and recommendation of Engr-in-Charge (Rewinding of Transformer will be paid separately) (d) Any damage occurred to transformer during the process of disconnecting/taking down/transportation, shall be made good by the contractor to the entire satisfaction of the Eng-in-charge at his own expenses.

All as per item No 3 above but voltage grade 22/0.433KV capacity 63 KVA to 750 KVA.

All as per item No 3 above but voltage grade 22/11KV capacity 3000 KVA.

M&L for replacement of HV porcelain bushing with packing and bush rod for outdoor/indoor type transformer in situ/wksp complete with brass stud rubber bush washers, nuts check nuts and cork sheet gasket for the rating upto 500 KVA, 11/0.433KV transformer complete all as specified and directed by Engr-in-charge. Note : (a) Opening of top cover measured separately (b) Brass stud will be measured separately.

M&L for replacement of LV porcelain bushing with packing and bush rod for outdoor/indoor type transformer in situ/wksp complete with brass stud rubber bush washers, nuts check nuts and cork sheet gasket for the rating upto 500 KVA, 11/0.433KV transformer complete all as specified and directed by Engr-in-charge. Note : (a) Opening of top cover measured separately (b) Brass stud will be measured separately.

M&L for replacement of HV porcelain bushing with packing and bush rod for outdoor/indoor type transformer in situ/wksp complete with brass stud rubber bush washers, nuts check nuts and cork sheet gasket for the rating upto 750 KVA, 22/0.433KV transformer complete all as specified and directed by Engr-in-charge. Note : (a) Opening of top cover measured separately (b) Brass stud will be measured separately.

M&L for replacement of LV porcelain bushing with packing and bush rod for outdoor/indoor type transformer in situ/wksp complete with brass stud rubber bush washers, nuts check nuts and cork sheet gasket for the rating upto 750 KVA, 22/0.433KV transformer complete all as specified and directed by Engr-in-charge. Note : (a) Opening of top cover measured separately (b) Brass stud will be measured separately.

M&L for replacement of HV porcelain bushing with packing for outdoor/indoor type transformer in situ/wksp suitable for 22 KV grade complete with brass stud rubber bush washers, nuts check nuts and cork sheet gasket for the rating upto 3000 KVA, 22/11KV transformer complete all as specified and directed by Engr-in-charge. Note : (a) Opening of top cover measured separately (b) Brass stud will be measured separately.

Supply and fixing in replacement HV, brass bush rod of suitable size for outdoor/indoor type of transformer 22/11 KV capacity upto 3000 KVA complete all as specified and as directed by Engr-in-Charge.

M&L for rewinding of HV/LV coils suitable for 22 & 11 KV grade with new DPC/super enamelled copper wire having class-F insulation as per existing size and turns for any capacity and type of transformer

M&L for silica gel grain complete all as specified and directed by Engr-in-charge.

Supply only mild steel screw bolts(machine made) with hexagonal head at one end and screwed the other with washer and one hexagonal nut n.exc 5 cm long and 5 to 10mm dia of neck

M&L for replacement of Tap changer assy having 7 position of transforemer including dismantling and taking out old unserviceable one complete for transformer 11/0.433 KV.

M&L for replacement of breather assembly made with plycarbonate base and clear aclylic glass of size min 50mm dia, min 120mm long for transformers 22/0.433 KV and 11/0.433 KV complete all as specified and directed by Engr-in-charge.

M&L for replacement of transformer temperature gauge dial type having temp range 0 to minimum 120 degree celcius complete all as specified and directed by Engr-in-charge

M & L for preparing surfaces of transformer of capacity up to 750 KVA by rubbing old paint and applying two coats of spray painting with existing colur paint from outside complete all as specified and as directed by Engr-in-Charge. Note. 1. Painting of transformer will be carried out for plinth mounted and pole mounted transformer. 2. Necessary tools and plants shall be arranged by the contractor. 3. After completion of painting HT/LT outdoor bushing cable termination joint, oil inspection glass and name plates to be made clean using cleanner. 4. Contractor will arrage electric supply for spray machine during painting.

M&L for disconnecting and shifting of transformer/HT VCB from one location to another location inside CME Campus and making connections all as specified and directed by Engr-in-charge.

M&L for servicing, testing and calibration of buchholz relay installed for transformer upto 3 MVA power transformer step down 22/11 KV for safe operation of transformer at site incl connection of relay complete all as specified and as directed by Engr-in-Charge. Note: (i) This item must be carried out through certified authority and provide certificate/report of calibration. (ii) All type of tools, equipments, labour and machinery are included in this quoted rates. (iii) This item will be completed after satisfaction of Engr-in-Charge.

M&L for servicing of HT VCB/SF6, 22/11 KV circuit breaker of any capacity after disconnecting HT supply for servicing, repair, replacement of defective/worn out componenets and reassembling complete compreising of the following including testing and commissioning to the entire satisfication of Engr-in-Chage:- (a) Dismantling the HTCB from the enclosure consisting of vacuum interrupter assembly, socket contacts checking the serviceability of the parts carefully including cleaning, adjustments, replacement of defective/worn out parts and reassembling the units complete. (b) Cleaning the external surface of bushings with cleaner or liquid amonia to remove the accumulation of dirt or any other deposits, inspection of bushings and make sure that vibration due to breaker operation have not caused the busings to move resulting misalingment of contacts.

(c) Checking the vaccum interrupter assembly and contacts, checking the alignment of contacts and setting the contact surfaces to bare firm and unitorm pressure and adjustment the gap as per manufacturers tolerance and replacement of badly spotted contacts. (d) Checking the breaker bushing of bus bar and circuit side inspecting the internal surface carefully for any charging/trackings, replacement of bushings etc. (e) Dismantling the spring charging mechaniism of the HTCB, checking the operatings of the closing/tripping through closing/tripping coils electricall as well as manually charging including cleaning adjustments and replacement of defective/worn out parts reassembling complete.

(f) Checking the condition of the spring charging motor along with gear box including servicing to motor commutator bushes lubrication of bearing surfaces etc. (g) Checking the ratchet wheet assembly, driving and charging parts including replacement of defective ratchet wheet and parts. (h) Checking the operation mechansim of the breaker and ensure its operation freely through entire stroke. parts which shows excessive wear and tear to be replaced or adjusted as per manufacturers tolerance. (j) Review the adjustment of all pressure switches and lockout devices. (k) Inspecting all bolts nuts, pins and coller pin are in place and they are open/close properly. Note :- (a) Parts will be replaced under relevant items. (b) Make of HTCB 22/11 KV - ABB/Kirloskar/Schnieder (c) Measurement of resistance value tools labour, petrolium jelly are incl in the quoted rate of the item.

S&F following material for 400/630/800 Amps HTCB 22/11 KV of make ABB/Kirloskar/Schnieder complete:- Note:- Labour charges for fixing the spares are included in item No 21 above.

Spout for 22 KV HT VCB model VD4

Housing of pole assembly for 22 KV VCB model VD4

Pole assembly (vacuum bottle assembly/vacuum interrupter assembly for 22 KV VCB model VD4

Pole assembly (vacuum bottle assembly/vacuum interrupter assembly for 11 KV VCB of make kirloskar/schinieder

Space heater (strip type) for HTCB with connecting arrangement

Thermostat for strip heater of HTCB

Shunt closing coil 24 V/110 V for 22/11 KV HTCB

Shunt tripping coil 24 V /110 V for 22/11 KV HTCB

Spring charge motor 220-250 V AC/DC suitable for 22/11 KV HTCB

Tulip contact 8/12 fingers for HT CB 22/11 KV

Isolating contact finger type -2 for HTCB

TNC switch with assembly as per existing for HTCB of ABB/Kirloskar/ Schinieder

PT bushing of capacity 22 KV suitable to fit on existing PTs in 22 KV VCB

PT bushing of capacity 11 KV suitable to fit on existing PTs in 11 KV VCB

PT fuse of capacity 22 KV suitable to fit on existing PTs in 22 KV VCB

PT fuse of capacity 11 KV suitable to fit on existing PTs in 11 KV VCB

48 pin plug socket with wiring including interlock assembly for 22/11 KV HTCB

HT bus bar insulator for 22/11 KV HT panel

Phase indicating lamp R-Y-B

Shutter/door locking handle with locking assembly

Lithium battery for relay any type or size

Repair/maintenance/reconditioning of breaker in-out trolly including proper alignment of wheels, wheel moving channel/rail, ramp etc, repairing of stoper pins locking pins, replacement of damaged wheels fixing base etc complete for smooth opertion of trolley for in/out and up/down etc complete all as specified and direct. Note:- Rates including necessary welding, bending, strengthning work if required as per site requirement.

M&L for disconnecting and taking out IDMT/numerical/micorporcessed relay any type or make (1 No UV/OV+1 No earth fault/over current + 1 No master trip relay) overhauling/repairing, testing, calibrating the relay by conducting primary and secondary injection test, checking with CT, rectification of defect in control wiring for proper tripping of circuit brakers through CTs, relays and tripping coil, adjustment/setting to plug and time multiplier settings of the relay to achieve the discrimination in tripping time of upstream brakers, re-installation of the relay in circuit complete all as specified and directed. Note : 1. Standby electric supply required during calibration of relay shall be arranged by the contractor in quoted rate of item. 2. Rates for necessary testing kit, testing equipments, tools etc are included in the unit quoted rate adn detail test report shall be submitted to Engr-in-Charge without any extra cost.

Taking down unserviceable relay and supply, intall, testing and commissioning of combined over current and earth fault relay of make ABB/Ashida incl uding fixing in HT panel with necessary control wiring.

S&F digital type multifunction meter VAF, PF, 3 phase 4 wire AC 440 volts 50 Hz of rating 60 Amps with class 1.0 complete all as specified and directed by Engr-in-charge.

Repair/reconditioning of HT CTs by removing of all dust, cleaning of terminals, improving megger valve with inject and checking and testing the 22/11 KV CTs for its ratio and connecting the same complete.

Repair/reconditioning of HT PTs by removing of all dust, cleaning of terminals, improving megger valve with inject and checking and testing the 22/11 KV CTs for its ratio and connecting the same with new nut bolts complete.

M&L for removing defective PT and S&F new 22000/110V epoxy resin cast HT PT as per existing burden or as per existing size/shape suitable for optimum performance of relay.

M&L for removing defective PT and S&F new 11000/110V epoxy resin cost HT PT as per existing burden or as per existing size/shape suitable for optimum performance of relay.

M&L for preparation of steel surfaces of existing HT circuit breaker/SF6 braker/RMU unit including cleaning/scrapping of old painted surface, removing all the scrapped paint particals from the panel using the proper vacuum cleaner to the complete satisfication of engr-in-charge applying two coats of synthetic anamel paint by using spray machine to finish the surface glosy of colour or shed approved incl marking of SM/MES number, incoming and outgoing, to and from etc complete all as specified and directed by Engr-in-charge.

Taking down the HT SF6 RMU 22/11 KV (2 incoming and 2 outgoing or 02 incoming and 1 outgoing type) of capacity upto 800 Amps after disconnecting HT supply for servicing, repair, replacement of defective/worn out componenets and reassembling complete compreising of the following including testing and commissioning to the entire satisfication of Engr-in-Chage:- (a) Checking the serviceability of the parts carefully including cleaning, adjustments, replacement of defective/worn out parts and reassembling the units complete. (b) Cleaning the external surface of bushings with cleaner or liquid amonia to remove the accumulation of dirt or any other deposits, inspection of bushings and make sure that vibration due to breaker operation have not caused the busings to move resulting misalingment of contacts. (c) Checking the SF6 bottle/tank for any leakage and repair/replace the same and refilling the SF6 gas as per manufacturers tolerance. (d) Checking the operating mechanism for smooth function and replacement of worn out parts. (e) Dismantling the spring charging mechaniism, checking the operatings of the closing/tripping through closing/tripping coils electrically as well as manually charging including cleaning adjustments and replacement of defective/worn out parts reassembling complete.

(f) Checking the condition of the spring charging motor along with gear box including servicing to motor commutator bushes lubrication of bearing surfaces etc. (j) Checking the pressure gauge for SF6 gas and repair/replacement of same for smooth funictioning. (k) Inspecting all bolts nuts, pins and coller pin are in place and they are open/close properly. Note :- (a) Parts will be replaced under relevant items. (b) Make of SF6 breaker - ABB & AREVA (c) Measurement of resistance value tools labour, petrolium helly are incl in the quoted rate of the item.

S&F following material for 400/630/800 Amps HT 22/11 KV SF6 RMU of make ABB/AREVA complete:- Note:- Labour charges for fixing the spares are included in item No 49 above.

Spring chage motor for 22 KV RMU (02 incoming and 1 outgoing) type of ABB make

Lithium battery for relays any type

Refilling of SF6 Gas

Pressure gauge for SF6 gas as per existing

Operating handle with assembly

RYB phase indicating lamp

M&L for bottle fuse 25 Amps capacity suitable for 22 KV LBS unit complete all as specified and directed by Engr-in-charge.

Pritam Electro Mechanical Services

SHREE VAIBHAV ELECTRICALS