TENDER NO T 03 2021 22

Amount

Repairing & rewinding of 415Volt, 3Φ, cooling fan having rating - 700 watt, 550 RPM/500 Watt 900 RPM mounted on cooling bank of 400/220/33 KV 315/240 MVA ICTs & 220/132/11 KV 160 Transformers. The scope of the work also involves removal of damaged fan at site, complete dismantling of cooling fan and complete checking of fan motor for healthiness of different parts like stator core, rotor, fan, bearing housing etc, Removal of damaged/burnt windings from stator core, through cleaning of stator core with dry air suitable cleaning regent, providing new & identical winding of super enameled electrolytic copper wire of appropriate gauge make Devidayal/Atlas/any other standard make in stator core slots with dual core slot insulation of NOMAX insulating paper in stator core slots, Varnishing of stator coils with Dr. Beck F-50 varnish aand if varnished is required to be dilute, thinner of 234/205 of Dr. Beck may be used, Replacement of damaged bearings of appropriate size make SKF/FAG/NBC type, correction of bearing housing if bearing is loose drying out of stator coils and meggering ( value of megger should be greater than 01 MΩ), replacement of end terminal plate and proper identification of end terminals leads of all the three phase windings with A1,A2,B1,B2,C1,C2 and formation of star/Delta, complete assemble of the cooling fan motor, painting of the cooling fan motor with superior quality smoke gray paint of 1st quality of Asian Paint/Berger/Nerolac paints etc re-fixing the fan at the site after remetalling, machining and balancing of shaft and blades for smooth operation of fan motor, ensuring healthiness of the re-winded fan motor assembly and it’s trial and re-fixed the fan at site and trial again.

Servicing & Overhauling of 350 Watt, 415 Volt, 3Φ, 1400 RPM cooling fan of Reactors of 400 KV Muzaffarnagar-Vishnuprayeg & 400 KV Muzaffarnagar-Srinagar Lines. The scope of the work also involves removal of fan at site, dismantling of cooling fan and complete checking of fan motor for healthiness of different parts like stator core, rotor, fan, bearing etc, through cleaning of stator with dry air & suitable cleaning regent, Varnishing of stator coils with Dr. Beck F-50 varnish and if varnished is required to be dilute, thinner of 234/205 of Dr. Beck may be used, painting of the cooling fan motor with superior quality smoke gray paint of 1st quality of Asian paint/Berger/Nerolac etc paints, replacement of defective bearings (if any) of appropriate size make SKF/FAG/NBC and . replacement of end terminal plate and proper identification of end terminals leads of all the three phase windings with A1,A2,B1,B2,C1,C2 and formation of star/Delta.

Servicing & Overhauling of 415Volt, 3Φ, cooling fan having rating - 700 watt, 550 RPM/500 Watt 900 RPM mounted on cooling bank of 400/220/33 KV 315/240 MVA ICTs & 220/132/11 KV 160 Transformers. The scope of the work also involves removal of fan at site, dismantling of cooling fan and complete checking of fan motor for healthiness of different parts like stator core, rotor, fan, bearing etc, through cleaning of stator with dry air & suitable cleaning regent, Varnishing of stator coils with Dr. Beck F-50 varnish and if varnished is required to be dilute, thinner of 234/205 of Dr. Beck may be used, painting of the cooling fan motor with superior quality smoke gray paint of 1st quality of Asian paint/Berger/Nerolac etc paints, replacement of defective bearings (if any) of appropriate size make SKF/FAG/NBC and . replacement of end terminal plate and proper identification of end terminals leads of all the three phase windings with A1,A2,B1,B2,C1,C2 and formation of star/Delta.

Painting of ‘L’ shape MS flat of size 50x6mm welded on isolator’s pipes in 400 KV, 220 KV and 132 KV Switchyards. The work includes cleaning/rubbing the surface with emery paper or hard brush so as to make it suitable for painting then painting with one coat of red oxide primer and two coats of good quality synthetic enamel green paint.

Proper cleaning of rust, dust deposited on the surface of radiator bank of 400 KV 63 MVAR Shunt reactor, making its surface suitable for painting. Applying one coat of best quality red oxide primer and two coats of smoke grey enameled paint ASIAN/BURGER/SHALIMAR make.

Rama Traders and engineers

RAHUL ELECTRIC ENGGINEERING WORKS