SPL REPAIR TO 5 MVA POWER TRANSFORMER AND OTHER CONNECTED HT EQPT AT MRS UNDER GE (EAST) MATHURA

Amount

Transporting of power transformer 5 MVA capacity after taking proper electric shutdown and draining out transformer oil in clean barrels from MRS to workshop for repair/replacement of unserviceable parts by hydra/Crane/T&P with suitable vehicle. Installation of transformer at MRS after repair/replacement of unserviceable parts from workshop and making all electric connections including testing the transformer complete all as specified and directed.

Lifting the core & coil assembly, washing and cleaning dust, dirt & sludge deposit from all parts, cleaning and polishing of tapping contact point, making internal connections, providing new cork sheet gasket packing 10 mm thick and pouring in the insulating oil in the transformer, re-assembling the transformer after repair work, checking for any leakages including replacement of any unserviceable parts required to make it serviceable complete all as specified and directed. Note:- spares required for replacement of unserviceable parts shall be measured and paid separately under relevant item of this BOQ as supply only and cost of labour thereof is deemed to be included inthe quoted rates.

M&L for painting of power transformer upto 5 MVA with synthatic enameled grey paint by using spray gun machine after removing all dust and rust. And write down MES/SM No with synthetic enamel paint complete all as specified and directed. Make of paint: SHALIMAR or equivalent item of other specified makes.

Supply & filling in replacement of transformer oil in transformer in situ/ at site for toping up the level of oil having dielectric strength 60 KV at 205 mm gap including testing complete all as specified and directed.

Purification, filtration and Dehydration of transformer oil of transformer installed at various indoor/outdoor sub station by ultra high vacuum filtration machine with stream line filtration plant at a temp 60 to 70 deg. Celsius and achieving minimum dielectric withstand strength of 60 KV for 1 minute in 2.5 mm gap setting (for used oil) complete all as specified and directed.

M&L for taking out old unserviceable HV/LV coil removing insulation complete 5 MVA Power transformer by brushing coil, cleaning the inner body complete making free from dust and dirt, all impurities, applying paper insulation(IS specified) of power transformer complete of capacity 5 MVA complete all as specified and directed.

M&L for re-winding of HV (33 KV) coils with super enameled best quality copper wire of existing gauge with superior quality insulation material for power transformer of capacity upto 5 MVA complete all as specified and directed.

M&L for re-winding of LV (11 KV) coils with super enameled best quality copper wire of existing gauge with superior quality insulation material for power transformer of capacity upto 5 MVA complete all as specified and directed.

Supply and fixing in repair transformer breather assembly oil seal type made of transparent PVC body heavy duty filled with good quality silica gel blue colour of capacity 8 Kg complete all as specified and directed.

Supply and fixing in replacement of silica gel of best quality of blue colour complete all as specified and directed.

Supply only LV (11 KV) brass stud full threaded with required nuts & washer suitable for power transformer upto 5 MVA complete all as specified and directed.

Supply only HV (33 KV) brass stud full threaded with required nuts & washer suitable for power transformer upto 5 MVA complete all as specified and directed.

Supply only LV bushing with gasket suitable for power transformer capacity upto 5 MVA complete all as specified and directed.

Supply only HV bushing with gasket suitable for power transformer capacity upto 5 MVA complete all as specified and directed.

Supply only in replacement of double float buchholz relay complete all as specified and directed

Supply and Fixing in replacement of multifunctional meter (Voltage, current, Pf) on 11KV VCB/Bus coupler including nuts, bolts etc complete all as specified and directed.

Supply and fixing after disconnected of electric supply to VCB and replace the unserviceable Over current and earth fault protection relay, Vx=24 -240 V AC/24-250 V DC,In=1A/5A(0,1In-40In), Ion=1 A/5A(0,01Ion-2Lon) complete all as specified and directed. Make:-Cat part No REL15002D Easergy P1 of Schneider or equivalent item of other specified makes. Note:- Fixing/Calibration of protection relay shall be carried out through O.E.M of manufacturer’s engineer/technician only . Note:- The cutting/welding work of duly painted GI sheet for fixing of relay including GI sheet of size 450mmX300 mm is included in the quotated rates.

Supply and Fixing in replacement of unserviceable battery charger of capacity 12V/24 Volt complete all as specified and directed.

Supply & fixing in replacement of repair of maintenance free battery of 12 volt DC, 150 AH for VCB unit set complete all as specified and directed Make :- Exide or equivalent item of other specified makes.

Supply and Fixing in replacement of lightning arresters expulsion type suitable for 33 KV complete with all fittings, station class, discharge capacity 65 kilo amp complete all as specified and directed.

Dismantling of old unserviceable Aluminium conductor off sizes from existing over head lines complete all as specified and directed.

M&L for ACSR conductor any sizes drawn over for over head lines fixed to insulators with binding wire after allowing specified sag complete all as specified and as directed.

Supply and Fixing PGI Clamp suitable for fixing with ACSR conductor complete all specified and directed.

Supply and fixing after disconnected of electric supply to VCB Differential relay, Vx=24 -240 V AC/24-250 V complete all as specified and directed. Make:- Cat Part No RET 615 of ABB or Schenider or equivalent item of other specified makes. Note:- Fixing and calibration of protection relay shall be carried out through O.E.M of manufacturer’s engineer/technician only .

Supply and installation of 33 KV, single phase, out door oil cooled CT ratio 200/100 5-5 Amp, class 0.5/ 5P10, burden 15 VA, 3 core suitable for metering, protection and differential complete all as specified and directed.

Supply and installation of 11 KV, single phase, out door oil cooled CT ratio 200/100 5-5 Amp, class 0.5/ 5P10, burden 15 VA, 3 core suitable for metering, protection and differential complete all as specified and directed.

Supply and fixing relay box made out of CRCA sheet, 2.0 mm thick, indoor type, of suitable size with provision of fixing one No of differential relays, control cables, multifunctional meters complete all as specified and directed. Note:- Drawing must be approved before procuring the Relay control panel by Engineer-in-Charge.

M&L for earthing complete with copper earth plate electrode size 600mm x 600mm x 3.15 mm thick buried directly in ground vertically in a pit of depth not less than 2.25 mtr below ground levels with top edge of the earth plate not less than 1.5 mtr below normal ground level surrounded from all sides by mixture of charcoal and common salt and electrode connected to copper strip 20X3 mm by means of bolts, nuts, check nuts and washers of galvanized including GI protection pipe light grade 40mm dia connected to main earth wire on pole or control board and GI pipe medium grade 40 mm dia bore for watering funnel with wire mesh. RCC cover with concrete (1:2:4) type B-1 using 8mm bars @ 100mm C/C both way with frame, PCC chamber pit with PCC (1:3:6) type C-2 including necessary excavation and earth work all as shown in electrical plate No 3 connected to earthing test point and testing on completion including taking down existing earthing complete all as specified and directed. Note : The unit rate includes for protection pipe and copper Earth strip 25 x 4mm from top of earth plate upto 7.5m above ground level.

M&L for copper strip of size 25x4mm as earth continuity conductor buried in ground or drawn in pipe or fixed to wall on saddle complete all as specified and directed.

Supplying and fixing in replacement 1100 volts grade heavy duty control cable, copper conductor, PVC insulated, armoued, stranded of sizes 2.5 Sqmm 4 core complete in duct/ceiling/roof with proper clamping etc complete all as specified and directed.

Supplying and fixing in replacement 1100 volts grade heavy duty control cable, copper conductor, PVC insulated, armoured, stranded of sizes 2.5 Sqmm 8 core complete in duct/ceiling/roof with proper clamping etc complete all as specified and directed.

Supplying and fixing in replacement 1100 volts grade heavy duty control cable, copper conductor, PVC insulated, armoured, stranded of sizes 2.5 Sqmm 2 core complete in duct/ceiling/roof with proper clamping etc complete all as specified and directed.

Ms Kamal Kant Agarwal