Minor Irrigation Department Tender

Item No 19.2, Volume-V, PAGE No-225 - Work of repair and rewinding of LV side upto 100 KVA power transformer as specified below: a. Drain out the contaminated transit oil completely from the reactor; flush the windings of the transformer with jet force of good BDV value transit oil. b. Removing the burnt out windings from all the three phases of the transformer provide new windings of LV side in all three phases. c. Clean the terminal connection with carbon tetra chloride solution. d. Fill the new transit oil (departmental supply) replace the bolts, nuts, washers and provide gasket etc., wherever necessary provide silica gel breather. e. Fix the transformer in the bet and charge the transformer and observe Performance “ON LOAD” and ensure for trueness of the transformer performance. Complete with all lead and lifts, loading and unloading as per specification, drawing and direction of engineer in charge of work.

Item No 19.3, Volume-V, PAGE No-225 - Work of servicing, leak arresting and oil filtration upto 400 KVA power transformers as specified below: a. Removing cable connection of transformer after isolating the supply dismantling the cable connection b. Replacing the existing leakage L.V side H.T Busing Gasket, oil seal, bots and nuts etc. of the power transformer.c.Replacing the existing non-functioned damaged Dehydrating Breather by a new breather with new silica gel for the above transformer d. Arresting oil leak from exclusive vent, neutral bushing of valves, flanges, is drying arresting the leakage for L.V and HV side of power transformer and refilling of the transformer oil including cost of labour and necessary repaired materials. e. Repaint the Transformer using light grey epoxy paint of 2 coated as original. f. Filtering of oil in the transformer at the transformer center by hot process using stream line filter such that the dielectric strength of oil in the transformer conforms to ISI specification. g. Painting of entire structure of transformer yard including fencing using silver paint. Complete with all lead and lifts, loading and unloading as per specification, drawing and direction of engineer in charge of work

Item No19.12, Volume-V, PAGE No-19.12 - Work of repairing and servicing of capacitor isolator panel of motors as specified below: A) Dismantling the closing and tripping mechanism, removing the broken, closing lever, cylinder, moving contact tips, and service the entire mechanism, Providing and fixing the new closing leverfull set cylinder, moving contact tips, etc., check the electrical circuit, replacement of burnt out LED Indication lamps etc., finally the panel should be tested for its running satisfactorily. B) Draining out contaminated breakdown oil completely form reactors, flushing of windings in the reactors with jet force of good BDV. Value transformer oil, cleaning of windings and flushing of carbon deposition over the windings in all the three phase of reactors, removing the terminals and cleaning the terminal bushings with carbon tetrachloride solution, checking of resistance of the windings of the correct value in all the three phases, filling the new oil with break down voltage value. Complete with all lead and lifts, loading and unloading as per specification, drawing and direction of engineer in charge of work

Item No 19.23, Volume-V, PAGE No-230 - Supply and brazing of motor end lead cable by using H.T Copper lugs, brazing materials, gas, soldering past, etc as original for all the three phases for motor. Complete with all lead and lifts, loading and unloading as per specification, drawing and direction of engineer in charge of work

Item No A-49, Volume-I, PAGE No A-49 - Providing pump operator for maintenance and working of pump, motors, panel boards for 8 to 10 hrs/day pump working duration,(1x30 days= 30man days per month) As per the direction of engineer in-charge of the work.

Semiskilled category, Volume-I, PAGE No. A-50(5) - Watch Man,(1x30 days= 30 man days per month) as per the direction of engineer in charge of work

Item no. part II, Volume-IV, P.No.125 - Providing and supply at site and refilling new transformer oil to oil cooled starters and transformers. as per the direction of engineer in-charge of the work.

Part I Volume-IV, P.No.120 - Grease GEM RR3 and etc, complete with all lead and lift loading and unloading as per the direction of engineer in-charge of the work.

Item no.19.6 Volume-V, P.No.226 - Work of repairing of diverter switch and replacement of resistance upto 66KV/6.6KV 8MVA Transformer as specified below: Removing the supply connection of diverter switch draining out the diluted oil of OLTC chamber, removing the diverter switch one by one carefully by using tripped and chain pulley block. Dismantling the diverter switch unit, removing the worn-out resistance from the diverter switch Supply and fixing of new resistance of same capacity as original to the diverter switch without disturbing the other running equipment, cleaning the diverter switch housing chamber to remove the carbon deposit, lowering the repaired diverter switch inside the housing chamber and aligning the centre shaft by using link nut, bolt and washers tighting of resistor conductors carefully without causing damaged to the nearby the contact refilling the good quality high BDV value insulation oil to the diverter switch housing chamber (oil will be supplied by the department) adjusting he micro switch NO, NC contacts and lifting liver for its proper function and covering the chamber by fixing the lid on the top. Testing the operation of tap changing system by giving upto 440 Volts supply from tap position 1 to 25 after satisfactory charging over all 25 taps in forward and reverse direction. with all lead and lift loading and unloading as per the direction of engineer in-charge of the work.