SPECIAL REPAIR TO 5 MVA TRANSFORMER AND ASSOCIATED WORKS AT JAISALMER MIL STN UNDER GE (A) JAISALMER

Amount

M&L for arrangement of suitable type of transport (to and from) for transporting the 5 MVA Transformer including arrangement for lifting up of transformer from site at Jaisalmer military station and unloading of transformer at OEM workshop for repairs complete including all safety measures and getting back the transformer after repairs to Military Station Jaisalmer complete all as specified and directed by Engr-In-Charge. Make of OEM:- ITE Gurugram, RTS, Urja Transformers, Crompton, Gujrat Trasnformers, Volta amp Transformer.

M&L for opening of 33/11 power tansformer (5MVA) HV & LV bushing connection, Joint inspection of core and coil assembly, Rewinding of 3 Phase HV and LV winding with new fresh copper, insulation and connection copper as per new design, cleaning the core and frame throughly, yoke filling after assembly, replacement of all gaskets and sundry materials such as nuts, bolts, washers, crape paper, assembly insulation, tank rectification, replacement of old Tap changer switch with new tap switch, complete painting of transformer, replacement of WTI and OTI meters , silica gel assembly and testing, connecting and commissioning by checking all the parameters(incoming and outgoing) of repaired 5 MVA transformer including connecting control wiring and charging the transformer and complete VCBs after bringing back at Jaisalmer site complete stabilizing the power supply complete in all respect all as specified and directed by Engr-In-Charge. Note: Testing and calibration shall be carried through OEM approved agencies and Original test results shall be submitted in triplicate.

Note: (a) Contractor will be responsible for making arrangement for visiting of GE/Engr-in-charge to the Factory of OEM during rewinding and again at the time of testing after complete repairing of transformer. (b)The complete rewinding and repair to be carried out through OEM only. (c) Following tests to be carried out after repair and reports to be submitted before claiming of RAR/Payment. (1) Voltage Ratio & Polarity Test. (2) Vector Group Test. (3) No Load loss test & Magnetizing current. (4) Load loss test & Impedence measurement. (5) HVSSV Test. (6) IOVT Test( Double voltage double frequency test.) (7) Oil BDV Test. (8) Insulation resistance test & PI Value. (9) Magnetic balance test. (10) Winding resistance measurement of HV & LV winding.

M & L (T&P) for disconnecting and shifting of existing 5 MVA Transformer from 33 KV substation near TCP 1 to it's original location near Div HQ substation with all safety and shut downs including connecting HV and LV side, connecting and checking of earthings and complete charging the transformer/OHT and VCBs including control wiring complete including vehicle for shifting complete all as specified and directed by Engr-In-Charge. Note: Contractor shall be responsible for connecting existing setup of substaion near DIV HQ including charging of batteries and any other requirement for charging the shifted transformer and calibration of relays/ CT/PTs and checking/ alteration in outgoing OH circuits complete as per the requirement of the site incharge JE/Engr-In-Charge for load balancing complete with required materials and Tools and Plants without any extra cost to the department. Rates for the required work are deemed to be included in quoted rates.

Supply and fill new EHV grade insulating transformer oil as per IS 335 upto guage level of tank. complete with minimum BDV 50 KV all as specified and as directed by Engr-in-charge.

Filteration of existing insulating oil with high pressure vaccum filteration plant operated by DG set to get BDV 60 KV after filtration attains BDV upto 50 KV for Transformer complete all as specified and directed. Note :- (a) Transformer shall be kept in OFF position during filteration. (b) Temperature of oil should be kept below 75 degree Celcius during filteration.

Supply and fix in repair end cable jointing kit for 11 KV grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for cable 3 core 185 sqmm XLPE insulated armored with aluminium conductor 11000 volts complete all as specified & directed by Eng-in-Charge

Supply and fix in repair end cable jointing kit for 11 KV grade cable for indoor termination heat shrink type joint complete with jointing material and accessories suitable for cable 3 core 185 sqmm XLPE insulated armored with aluminium conductor 11000 volts complete all as specified & directed by Eng-in-Charge

Material & Labour for ACSR Conductor of weasel type for HT connection including dismantling old one all as specified and directed.

M&L for servicing of Indoor vaccum circuit breaker (VCB) Rated/Max Voltage 12 KV , rated current 400 A at Station HQ Jaisalmer sub station, dismantling, cleaning,greasing the complete VCB with attached relays, bus bar etc insulation testing setting the contact gap by measuring as required, reassembling the VCB and re-installing back to its original position, checking repairing the current circuit panel wiring,relay, testing primary injection, testing of CTs, replacement of closing coil and tripping coil as per the existing at site and any minor spares as required complete including operational testing and commissioning and generating test report making it operational in all respect complete all as required and directed by JE/Engineer-in-Charge. NOTE : The cost for minor spares such as operating handles, screws,nuts,bolts, washers indicating lamps, lamp holders, HRC fuses,fuse carriers etc of required ratingsn shall be included in the rate quoted for the item.

M&L for servicing of Outdoor SF6 circuit breaker, Rated/Max Voltage 36 KV, rated current 1600 A, Closing and opening coil supply voltage 24-110 V DC at Station HQ Jaisalmer sub station, dismantling, cleaning,greasing the complete VCB with attached numerical relays, bus bar etc insulation testing setting the contact gap by measuring as required, reassembling the VCB and re-installing back to its original position, checking repairing the current circuit panel wiring,relay, testing primary injection, testing of CTs, provision of minor spares as required completecomplete including operational testing and commissioning and generating test report making it operational in all respect complete all as required and directed by JE/Engineer-in-Charge. NOTE : The cost for minor spares such as operating handles, screws,nuts,bolts, washers indicating lamps, lamp holders, HRC fuses,fuse carriers etc of required ratings shall be included in the rate quoted for the item.

Supply, Fixing and testing of metering & protection type Current Transformer (CT) oil filled type outdoor type of 36 KV 25 KA capacity dual ratio 200-100/5 Amps, 15 VA burden class I accuracy for metering and 15 VA/5P-10 for protection including dismantling old existing CT.

Supply, Fixing and testing of metering & protection type Potential Transformer (PT) oil filled type outdoor type of 36 KV capacity ratio 33KV/ 110 V, 100 VA burden including dismantling old existing PT.

Supply, fix, testing, and commissioning of gang operated rotating type air break switch horizontal type, 12 Insulators mounting complete, double break and operation rod of suitable length 400 A capacity and suitable for 33 KV HT supply including dismantling old existing GOD Set complete all as specified and directed.

Material & Labour for Lightning Arrestor (LA) zinc oxide type complete with all fittings LD class 1, discharge capacity 10 KA, suitable for nominal system voltage 33KV and rating 30 KV RMS including dismantling old existing LA all as specified and directed.

Supply and fix Drop out (DO) fuse unit assembly expulsion type outdoor single pole 200 Amp suitable for HT 33 KV, comprising of insulators, steel base mounting frame , GI nut bolts etc with 30A , HT barrel type fuse including dismantling old existing DO Fuse set complete.

M & L for single post insulator, 33 KV with mounting spindle etc. Complete with all fixing acessories ISI Marked including dismantling old existing old one complete all as specified and directed.

M & L for Pin insulator, 33 KV with mounting spindle etc. Complete with all fixing acessories ISI Marked complete including dismantling old existing old one all as specified and directed.

M & L for disc insulator, 33 KV with hardware fittings etc. Complete with all fixing acessories ISI Marked including dismantling old existing old one complete all as specified and directed.

Supply and fix Tripping Neutral switches in VCB including dismantling old one

Supply and fix LED Indicators in VCB as per existing colour codes including dismantling old one

Supply and fix of HRC fuse link of Required rating 20A Suitable for HG type 20H/20P/20B including dismantling old one

Servicing, cleaning & testing of 110 volts/20A DC stationery automatic float cum booster lead acid battery charging unit housed on sheet metal cabinet of 1.6 mm thick comprising the following :- (a) Battery charging suitable for charging 55 X 2 Nos - 110 Nos, 1 volts 100 AH tubular cell trickle and high/ boost 110 volts DC out put and 230 volts AC input complete all as specified. (b) Ammeter (c) Voltmeter (d) Indicating lamp set for AC and DC. (e) out going MCB DP 6 Nos for outgoing DC circuit of electrical equipments.

Supply and fixing of LED Full matrix Red display Outdoor for Substations Bldgs, Cabinet MS Power coated, Black in colour, Operating Voltage: 230V AC, Characterstics height : 6 inch, Pitch : 10 mm, Overall size: 1380 mm (L) X 740 mm (H) X 100 mm (W) including mounting on Wall or Grouted with GI Pipe,Copper Wiring arrangement with USB Communication Complete all as specified & directed by Eng-in-Charge.

Supply and lay Elecsafe-AH-Insulated HT Electrical matting as per IS 15652:2006 Class B Working voltage up to 11 KV, 2.5mm thickness,1 mtr* 5mtr roll, Blue colour with one side fine chequered & other side anti skid small button.PCN No. ALA 6000 072

Removing grass and bushes including its roots growing at Substation yard and keep the sub station yard neat and clean complete all as specified and as directed.

Material and labour for substation yard spreading levelling with 40 mm graded coarse aggregate / gravells laid approximately 75 mm thick layers near VCB/Transformer /2/4 pole structure and plateform etc all as directed.

Material and labour for substation yard spreading levelling with 20 mm graded coarse aggregate / gravells laid approximately 75 mm thick layers near VCB/Transformer /2/4 pole structure and plateform etc all as directed.

Servicing and repairng/ carryingout maintenance of 33KV/433V transformer including the following works for 25 KVA capacity : (a) Removing from platform and disconnecting electrical connection from HT and LT side including transporting the transformer to work shop. (b) Dismantling the transformer, drain out transformer oil, lift the cover,coil assembly keep up the assembly in oven upto the preparation of inside chambers by cleaning inside, scraping complete all around old parts of the transformer. (c) M & L for two coats of oil resistance painting internal (inside transformer) over a coat of red oxide primer. (d) Cleaning the core iron sheet laminations asssembly by oil complete,removing the carbon sediments, dust in the coil and core gently without making any damage to coil and core. (e) Re-assembling all dismantled parts including provision of new gasket,nut,bolts,refilling with transformer oil, fixing leakages and transporting back to original location including electric conection testing and commissioning complete.

NOTE :- i) Oil filtration,supply of new oil will be measured separately.

ii) All petty parts including nut, bolts, gasket minor weldings are deemed to be included the rate quoted

M&L preparation of old painted surfaces of HT cross arm, channels and clamps section size up to 100x50 mm, clamps etc and applying one coat of zinc chromium primer and 2 coats of Aluminium paint for cross arms any numbers of each pole incl clamps etc all as directed

M & L for Painting on surfaces of cable trench cover by scrapping or with wire brush after preparing the surfaces of area 450 x 600 mm cross section by removing dust etc applying two coats of synthetic enameled paint over a coat red oxide on steel surface.

Supply, laying & testing PVC sheathed cable galvanised steel strip or wire armoured, electric control cables (Heavy duty) with stranded copper conductor up to 1100V grade fixing with gland including taking down of old cable of following sizes.

(a) 1.5 sqmm 4 core (Each core single strand) IS 694 CM/L-3934068 ISI Marked.

(b) 2.5 sqmm 12 core (Each core single strand) IS 1554-Pt-1 1988 ISI Marked.

(c) 2.5 sqmm 20 core (Each core single strand) IS 1554-Pt-1 1988 ISI Marked.

M & L bore earthing not less than 250 mm dia 16 feet deep filled with black soil up to 7 feet from bottom complete with galvanized iron pipe 40 mm bore medium grade 3 meter long tapers at bottom & provided 12 mm holes (staggered) at 75 mm centre to centre up to 2.5 meter of length from bottom , burried directly in ground filled with 45 cm alternate layer of chemical magnisium sulphate & salt up to ground level connected to galvanized iron strip 32 x 6mm as earthing lead by means of bolt and nut, check nuts and washer of galvanized iron or steel including brazing work and 40mm dia light grade pipe for earth lead protection including all necessary earth work, excavation, earth chamber with PCC 1:3:6, type C1 and RCC chamber cover of PCC 1:2:4 with handle and 20mm dia GI watering pipe with funnel and wire mesh etc and testing on complete all as specified and directed by Engr-in-charge.

Note :-Testing of Repaired Tfr to be carried out.

(a) Voltage Ratio and Polarity Test, (b) Vector Group Test, (c) No Load Loss test and Magnetizing Current

(d) Load Loss test and Impedance Measurement , (e) HVSSV Test, (f) IOVT(Double Voltage, Double Frequency Test).

ALPHA ENGINEERING COMPANY

SHISHODIA ENTERPRISES