Repair / replacement of components to 75 KVA automatic voltage regulator of tube well No. 07.

Amount

Repair / replacement of components to 75 KVA automatic voltage regulator of tube well No. 07 feeding to CPS Samadhian by way of disconnecting of incoming as well as outgoing electrical connections and making of bypass arrangement for smooth functioning of the tube well. Then opening of lid of the AVR and extracting of voltage stabilizer assembly out of container with the help of chain pulley and other tools and tackles. Draining out of all the transformer oil in the container. Dismantling of all the damages parts such as dimmers, carbon brushes and electronic circuit plates etc. Then providing and fitting of new dimmer coil – 01 No. of same capacity and specifications in place of damaged/burnt ones. The job further includes reconditioning of other 02 Nos. dimmer by way of removing carbon and turning / polishing properly. Checking / strengthening proper insulation in between the coils with the help of araldite and compound. This job includes providing and fitting of 02 Nos. electronic circuits plates, 04 sets of carbon brushes to all dimmers, providing and fitting of carbon brush assemblies – 02 Nos. in place of damaged ones. Replacement of damaged LED indicating lamp – 01 set, push button switches – 1 set etc. Then repair to the internal control wiring. Assembling of AVR assembly with the container with new fasteners. Then de-moisturizing of old drained out dielectric oil, heating to the optimum temperature, cleaning and servicing of the transformer oil and filling the oil in the voltage regulator container. Topping up of transformer oil upto to the required level. Remaking of the entire all the electrical connections and testing the AVR on full load conditions. The job includes cost of material, labour and carriage charges. Complete job.

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