Repair to 40 hp motor of pumping unit no. 1 and repairs to 100 kva transformer of lift irrigation station Dhumalla and overhauling/ replacement of damaged parts and rewinding of 250 kva voltage stablizer installed at LIS Kothey Kalyana new.

Repairs to 40 hp motor of pumping unit no. I and repairs to 100 kva sub station of Lift irrigation station Dhumala.

Dismantling of 40 HP motor of pumping unit No-I at Lift irrigation station Dhumala, by way of decoupling the motor from the pump shaft after decoupling of coupling bolts on coupling pulley set. Dismantling of motor from the base frame. Repairs to 100 KVA electric transformer installed at lift irrigation station Dhumalla( pumping station is across fencing on international border) by way insolating of transformer from 11 KV HT supply, removing of HT cables and LT cables from the transformer. Lifting of transformer from installed position using crane and carriage of transformer to road side from the lift irrigation station Shifting of transformer to workshop for repairs. Completely dismantling the transformer after removing the top cover of transformer and extracting out the damaged LV and HV coils from the oil tank. Complete rewinding of HV coils and reconditioning of LV coils using superior quality insulating material. Providing and fitting of 4 no’s LV bushes, 3 no’s HV bushes, LV bush rod 4 no’s, HV bush rod 3 no’s, gasket set and nuts and bolts. Repairs to the core of transformer by replacing the flashed core material. Heating of assembled coils in oven for proper hot air process and to get required meager value. Repair to oil tank by welding to make the oil tank leak proof and air tight. Lowering the assembled coils in oil tank. Filtering of existing transformer oil and topping up with 100 liters of fresh transformer oil. Complete job includes cost of material, labour charges, cost of oil, welding charges. Repairs to 40 hp motor of pumping unit no I by extracting out old damaged winding manually and cleaning of stator slots. Complete rewinding of the stator by using standard copper wire of requisite gauge. Varnishing after rewinding of stator. Providing and fitting of new bearings 2 no’s on driving and non driving end, end terminals, nuts and bolts. Shifting back of repaired motor after carrying out repairs to site. Shifting the motor and pump from Lift irrigation station , Dhumala across the fencing on international border to road side and carriage to work shop by carriage vehicle for repairs.The job includes the cost of materials, labour charges, and installation charges. Complete job.

Rebate on Old Parts

Overhauling/ replacement of damaged parts and rewinding of 250 kva manual voltage stabilizer installed at lift irrigation station Kothey Kalyana new.

Overhauling/ replacement of damaged parts and rewinding of 250 kva voltage stabilizer installed at lift irrigation station Kothey Kalyana new by way of disconnecting incoming and outgoing power connections from voltage stabilizer. Dismantling of voltage stabilizer at workshop by way of extracting out the inner frame, extracting out the 2 No’s damaged coils and rotary switches. Rewinding of 2 No’s coils using standard quality copper wire of appropriate gauge, varnishing with two coats of standard make varnish and proper insulation. Replacement of gasket, providing/fitting of 1 no’s new rotary switches and refitting on the Bakelite plate. Repairs to leaking portions of oil tank by way of welding of damaged and leaking portions. Providing and filling of 325 liters of fresh transformer oil in oil tank after cleaning the tank to remove carbon deposits. Replacement of bus bars and internal control wiring at the incoming and outgoing of stabilizer as per ratting. Installation of the voltage stabilizer by connecting incoming and outgoing power cables. Testing of voltage stabilizer on no load and full load conditions. Job includes cost of material including rebate on old copper scrap/ material, labour charges, hire charges of tools and tackles, crane charges, carriage charges, installation and testing charges at site. Note:- The tenderers are requested to visit the site and quote the rate as per site conditions. Any modifications/ alterations of the job, absolutely necessary if required at the time of execution may be done as per actual site conditions.

Rebate on Old Parts

GANPATI ELECTRICAL AND MECHANICAL WORKS

N B Engineering and Electric Works

GANPATI ELECTRICAL AND MECHANICAL WORKS