MID/AN/56

Dismantling of the 100 KVA Electric Transformer from HT and LT connections. Lowering of the transformer from the pole on the ground with help of crane and manual labour. Shifting of the transformer to the workshop with help of mechanical transport, tools and tackles. Opening of the top cover, taking out the coils from the casing using chain pulley block and tripod stand and manual labour. Replacement of old damaged HV coils 08 Nos. and LV coils 02 nos. Heating the rewinded coils to attain the required megger value. Removal of old damaged LT Bushes 04 nos. And HT Bush 03 nos., damaged insulation, rubber gasket. P/Fixing of sundry items, new bush rods, gaskets and internal insulation sleeves and tapping, lowering of coils inside the sump of the transformer. P/Filling of new transformer oil (approx.100 lts) after de-moisturising, Re-fixing of top cover, nuts and bolts and back shifting to site by means of mechanical transport and mounting it on the platform with the help of crane, fitting the same after making connections of the HT and LT lines. P/F of new aluminium thimbles on LT Cables at site. Testing the continuity of the each phase and securing of all joints. Complete job including cost of material, labour charges and hiring charges of crane, tools and tackles as required during the execution of the job etc.

Repairs to 25 HP oil immersed starter no. 01 installed at LIS Kot. The job involves disconnecting the starter and shifting to workshop by mechanical transport. There after dismantling of starter at workshop and replacement of worn out G.M nuts and washers, copper fingers, contacts,(moving and fixed) as per sample. Shifting the starter to LIS. Replacement of worn out/burnt copper thimbles of cables by p/f of new thimbles duly crimped and taped. Topping of 5 litrs. T.oil Connecting power supply & testing on load. Complete job includes the cost of material, labour charges and other misc. charges at site.Complete Job

Repair to 25 HP three phase induction motor no. 01 at LIS Kot. The job involves decoupling the motor from the HC pump and unfastening the foundation nuts and bolts by using suitable tools and tackles and labour. Lifting the motor out of pump house by using manual labour. Loading the motor in the vehicle and shifting the motor to the workshop . Unloading of the motor in the workshop .The job further involves dismantling of end covers, extraction of rotor from motor. Extraction of damaged winding from the stator. Cleaning of stator with compressed air and requisite chemical cleanser/CCL4. Complete rewinding by way of providing and fitting of new good quality winding wire of gauge and size (as per old sample) in the stator together with replacement of damaged /worn out wedges/strips and p/f of f-class insulation, Application of superior quality varnish (Red Becktol etc.) by spray impregnation process and drying the stator winding with hot air circulation process and thereafter checking the IR value. Providing/fitting of driving end bearing as per sample. Re-assembling the motor after greasing. Shifting the motor to LIS . Installation of the motor over the base frame by providing / fitting of nut bolts, washers etc., making of electrical connections, replacing worn out nuts, bolts for the electrical connection. Alignment & coupling with pump .Complete testing of the pumping unit. Job includes cost of all material, transportation charges, head load and labour charges for skilled / semi skilled labour, hire charges for tools & tackles at LIS. Complete Job

Restoration of 250 HP 3 phase induction motor unit no. 3 submerged due to rise in water level in river Chenab at LIS Ambaran . The job involves disconnecting all electrical connections decoupling the motor from the pump, removing from the base plate . Shifting the motor to a safer place by using manual labour and suitable tools and tackles. Dismantling the motor ,extraction of the rotor and bearings. Cleaning of rotor and stator winding with petrol and chemical cleanser. Thereafter applying Dr. Beck. Compound on stator winding by spraying impregnation process and drying the same with hot air circulation process. Checking IR value of the winding with the help of megohmmeter. Assembling of motor. Job includes cost of all material, transportation charges, head load and labour charges for skilled / semi skilled labour, hire charges for tools & tackles at the LIS. Complete Job.

Repairs to 300 mm dia foot valve assembly of pumping unit installed at LIS Ambaran. The job involves disconnecting / dismantling of the foot valve assembly from the suction pipe by deploying manual labour and allied tools & tackles. Shifting / transporting to the workshop. Cleaning by washing with water to make the foot valves completely silt free. After drying them completely, carrying out necessary repair works on the valve surfaces and flanged joints by welding using good quality electrodes. Dismantling of damaged / worn-out foot valve mechanism with flap & rings etc. Complete repair to the damaged flap plate and strainer by way welding. Providing / fitting of new rubber washer cut as per size of the flap plate. Extension of suction pipe of 300mm dia with 1 feet colar with suitable 2 flanges. Reassembling the foot valve and transporting back to the installation site at LIS. Fitting the valves to the respective suction lines with replacement of damaged rubber gaskets of flanged joints and worn-out nuts, bolts etc. Complete job including cost of material, labour charges, transportation charges and hire charges for tools & tackles. Complete Job

Repairs/replacement of starter of Priming pump at LIS Ambran. The job includes disconnecting the power supply of the starter and replacement of the damaged/burnt 10 HP Mug Starter (01 no.) by providing fitting of 01 no. new 10 HP mug Starter (of reputed make). Providing/ fitting of new copper thimbles of suitable rating duly crimped and taped etc. Complete job with the cost of the material, transportation charges and skilled / semi skilled labour charges at the site of LIS. Complete Job

Replacement of 1.5 inch dia foot valve assembly of priming pumping unit installed at LIS Ambaran. The job involves disconnecting / dismantling of the foot valve assembly from the suction pipe by deploying manual labour and allied tools & tackles. Fitting the valves to the respective suction line. Complete job including cost of material, labour charges, transportation charges and hire charges for tools & tackles. Complete Job

Repairs to 630 KVA electrical transformer with allied works at LIS Ambran. The job involves disconnecting all the electrical connections and loading in the vehicle with the help of crane and shifting to workshop with mech. transport. Unloading at workshop. Providing/Topping up of 110 litre transformer oil and heating the oil to make it moisture free. Fitting the transformer and restoration of electrical connections. Testing & commissioning on full load.. Complete job including cost of material, skilled and semi-skilled labour charges, loading & unloading at both ends and transportation charges as per site conditions of LIS.

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