Periodic maintenance, service of Liquid Rotor Starters of 750 KW 6.6 KV slip Ring Induction Motors of unit No 3 and 6 and Repairing of 6.6 K V Transformer Feeder HT panel of 200 KVA Transformer installed at Tawi Pump House Jammu.

Amount

Disconnecting power and control supply for LRS of unit no.3 Draining electrolyte from the tank cleaning tank from inside by removing clay, silt deposits at bottom and sides of electrolyte tank using wire brush, cleaning fixed electrode with emery paper, etc.applying a coat of black enamel on the exposed surface inside tank. Repair/ servicing of corroded fixed/moving electrodes by way of dismantling moving electrodes cleaning electrodes assembly with the help of emery paper ,buffing tool , Refitting electrodes assembly by providing and fitting new nuts and bolts.Repairs to control panel of LRS of unit no.3 by way of replacing Forward / reverse contactors -25 Amp -01no. Aux contactors-1no. and110 V DC .Providing and fitting of new limit switches -01 no. in place of damaged one. Replacing damaged locks of panel box -01 Nos. Disconnecting connections of shorting contactor(1000 Amp) ,unbolting bus bars and contactor for cleaning bus bars and terminals of contactor to remove carbon deposits using cleaning chemical, Replacing overheated fixed and moving contacts of shorting contactors by providing new spare contact kit of CK 12BE300 shorting contactor by way of removing contactor from the box and extracting overheated fixed and moving contacts and p/f new contacts kit. Refitting contactor and bus bars and making connections. Checking drive mechanism of LRS, checking gearbox , applying superior quality grease to gears and chains checking tension of driving chain, checking manual drive mechanism of all LRS. Complete job.Providing and filling of new electrolyte prepared in right proportion of sodium Carbonate and water. Checking all electric wiring and tightening all the loose connections Connecting LRS to LT supply, HT control panel, DC supply and checking forward reverse drive working of LRS’S electrically (Local and remote), control and manual drive, checking working of timer and limit switches. Complete job includes cost of material, labour charges and charges for all tools and tackles required for execution of job

Repairing of 6.6 K V Transformer Feeder panel of 200 KVA Transformer installed at Tawi Pump House Jammu by way of drawing out VCB Breaker Trolly from the Chamber and Extracting damaged components Like as shunt trip coil , Closing Coil , Anti pumping relay , Breaker Auxiliary Switch , Aux Contactor 110 V DC .providing and fitting of new Components shunt trip coil , Closing Coil , Anti pumping relay , Breaker Auxiliary Switch , Aux Contactor 110 V DC, rectifier Bridge unit 10 A 600 PIV110V AC to DC ,Under voltage relay-01 No, TNC Switch -01 No., in place of damage above noted Components., The job further involves necessary cleaning of all the terminal with CRC spray and tightening all the terminals properly, applying lubricant to all mechanical linkages for smooth operation, cleaning and smoothening of finger contacts points by rubbing gently with 0 grade emery cloth checking all control wiring and replacing any wire seems worn out/ electrical stressed by P/F new wire and maintaining proper color code and using ferrule for proper identification,. Inserting vacuum circuit breaker Trolly in the compartment and again testing closing and tripping of breaker. Complete job includes cost of material and labour charges, including transportation of material up to site (TPH)

M/S UK MECH AND ELECT ENGG WORKS

R K ELECTRICAL MECHANICAL ENGINEERING AND FABRICATION WORKS