REPAIRS AND MAINTENANCE TO 11/0.433KV DISTRIBUTION TRANSFORMER AND OTHER ALLIED WORKS AT ZONE-II UNDER GE(A) JAISALMER MIL STN

Taking down and dismantling defective transformer 11/0.433 KV of capacity 63KVA -160 KVA from foundation/ pole by using crane and transporting to workshop for repair/maintenance after disconnecting HV side HT cable or HT aluminium conductor and LV side LT cable dismantling the same for repair. Overhauling of transformer shall be done i:e Decanting the transformer oil & dehydration of transformer oil ,taking out of winding from core ,removing of debris includes carbon particles,mettalic dust and sludge from the bottom of transformer ,cleaning of the winding and heating of the winding to remove moisture as per norms,checking the continuity of winding, rewinding of transformer in case of winding short ,testing of insulation resistance ( insulation test report & BDV value of T/F oil before and after dehydration shall be summitted to Engr in charge),servicing of tap changer & renewal of unserviceable parts and reassembling complete ,spray painting with two coats of synthetic enamelled grey paint after preparation of old surface writing MES No with white paint of suitable size letter and transporting back from workshop to site, installation on platform/pole, testing to entire satisfaction of Engineer-in-Charge. Note :- winding and new transformer oil will measured and paid separately under relevant schedule item. (ii) Quoted rate is deemed to be inclusive of rubberised gasket with necessary Transport vehicle & crane for disconnecting, shifting & connecting .

Same as per item no 1 above but transformer capacity of 200 to 315 KVA

Same as per item no 1 above but transformer capacity of 400 to 630 KVA

Supply only HV/LV winding of transformer and taking out burnt copper winding wire cleaning carefully and rewinding the same with new superior quality 99.99% pure copper enamelled wire as per existing gauge including insulating material for transformer 63 KVA to 315 KVA complete all as specified & directed by Engineer-in - Charge.

Supply only HV/LV winding of transformer and taking out burnt copper winding wire cleaning carefully and rewinding the same with new superior quality 99.99% pure copper enamelled wire as per existing gauge including insulating material for transformer 315 KVA to 630 KVA complete all as specified & directed by Engineer-in - Charge.

Supply only new transformer oil for topping up of transformers any capacity all as conforming to IS - 335 at different transformers & different locations. Note : The dielectric strength of the transformer oil must be 45 KV r.m.s (min). Make : Power oil /Transformer Oil HP/ BP. Note : Test certificate in respect of the same to be submitted by the contractor duly signed by the Engr-In-Charge.

M&L for replacing of silicagel with new one in existing transformer breathers all as specified and directed by Engr in charge.

M&L for finding cable fault locations with electronic fault detector in the faulty HT UG cable of any size/location complete including earthwork and refilling after jointing complete all as specified and directed by Engineer-in-Charge. Note: The equipment shall be arranged by the contractor within short interval of time

M&L for dehydration of transformer oil (mounted on poles/platform etc) with the help of filtering and drying plant by mechanical machines of suitable capacity to achieve dielectric strength of 50 KV complete all as specified and directed by Engineer-in-Charge.(Note : For any capacity of Transformer)

M&L in repair of unserviceable HT brass stem with nuts, washers of transformer 63 KVA to 630 KVA ,11/0.433 KV complete all as specified & directed by Engineer-in - Charge.