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Tender For enquiry for servicing setting tuning rectification of overheating issues in the thyristor bridge and replacement of faulty components of the decs 300 digital excitation control system of both the units of 2x80 mw phps totladoh
Tender For 1)inspection of stator coil for identification of exact no. of the faulty coil and setting up the arrangements for rotor pole coils removing and rotation as per scope of works along with supply of materials and other consumables as per scope of works2)de-brazing the rotor pole terminations and removing the rotor poles (as required). dismantling of rotor poles using suitable and compatible tools, fixtures, and lifting arrangements. ensure safe handling and proper marking for reassemble. rotate and position the rotor appropriately to access the damaged stator coil area.3)remove insulation from both ends of the affected winding section.4)de-brazing of defective coils. 5)driving out the slot wedges carefully remove wedges from stator winding slots without damaging adjacent coils or core.(entire stator winding shall be inspected in case of loose wedges, worn out wedges and missing wedges shall be replaced) along with supply of materials and other consumables.6)insulation removal- remove insulation from both ends of the affected winding sections.7)cutting the coil bindings in both sides. cut the identified damaged winding portion using appropriate tools. carefully pull out the damaged coil from the stator slots without affecting surrounding windings.8)damaged winding cutting- cut the identified damaged winding portion using appropriate tools.9)winding extraction- carefully pull out the damaged coil from the stator slots without affecting surrounding windings. while removing the faulty coils from stator, utmost care should be taken to prevent any damage to stator core.10)removal of faulty coils from the slot.11)slot cleaning and preparation-clean stator inner tooth slots thoroughly. use emery paper to smoothen and maintain uniform slot condition.12)cleaning of carbon deposits/heavy oil content from complete stator coils through co2 cleaning process /dry ice blasting.13)new coil installation-insert new stator coil with proper alignment. fix securely using new wedges of appropriate grade and size.14)brazing of the coil ends.15)re-fixing the rotor poles and connecting them.16)insulation application-apply insulation as per specified class (e.g. class f/ classh). ensure proper curing and finishing.17)complete co2 / dry ice cleaning of stator and rotor.re insertion of removed rotor poles. 18)final checks & testing- insulation resistance (ir) test, high voltage (hvdc) test, continuity check, visual inspection and any other tests which are required (will be carried out by kpcl).19)assembling of removed damper doors and stator covers.20)maintain quality standards throughout the process & use calibrated tools and approved materials.21)presence of the agency during excitation and synchronization of the unit by kpcl.22)safety & quality-follow all safety procedures and ppe requirements
Tender For corrigendum : providing of custom bid for services - servicing and troubleshooting of bhel make maxdna based staticexcitation system (see)/ dvr of 03 generating units of the nimoo bazgo power station
Tender For providing of repair and overhauling service - bmc-regular planned service during annual shut down and emergency service during breakdown of digital staticexcitation system (dses) of stage-1 units in tps-2; thermal power plant; no; buyer premises
Tender For providing assistance in carrying out routine, preventive, breakdown maintenance of electrical & electronic equipment related to controls, governor & excitation system of ee(controls)n division at nagjhari power house
Tender For corrigendum : supply of breaking excitation transformer (atfex) 60 kv a . as per clw specn. no clw/es/t-20/h. [ warranty period: 30 months after the date of delivery ]
Tender For corrigendum : supply of set of over current realy qe/qf type di confiming to clw specification no . clw/es/r-27 alt-z or latest, each set consiting of: (1)breaking excitation overloadrelay (qe), qty.01 no. (2) braking over load relay (qf),qty.02 nos [ warranty period: 30 months after the date of delivery ]