Repairs of faulty Power Transformers 5, 8, 10 12.5 MVA, 33/11 KV of various makes available at various 33/11 kV Sub-station of MESCOM jurisdiction including transportation from site to repair bay and from repair bay to site as decided by MESCOM along with testing and commissioning after repairs to the transformers on Percentage basis under rate contract andand

Repairs of faulty Power Transformers 5, 8, 10 12.5 MVA, 33/11 KV of various makes available at various 33/11 kV Sub-station of MESCOM jurisdiction including transportation from site to repair bay and from repair bay to site as decided by MESCOM along with testing and commissioning after repairs to the transformers on Percentage basis under rate contract andand

Providing new transil oil to Power Transformer by Buyback of released oil (Subject to the condition of joint inspection at repairers site)

Providing new winding in place of damaged winding in buy back including cost of materials and drying etc, (Rate of Copper per Kg = New Copper rate per kg - Scrap Copper per Kg )

Providing solid insulation materials for replacement of damaged or burnt insulation as per actual weight for all the 3 limbs

Providing re-insulation to HV/LV winding whenever necessary for total weight of winding except solid insulation.

Providing new CRGO lamination to the core in place of damaged lamination wherever necessary taking into account of released CRGO which has to be retained by the repairera) Weight of New CRGO laminatio...

Providing oil Temperature indicator with RTD

Providing Silica Gel Breather Tank & OLTC

Providing new Bucholz relay

Providing radiator valves (150mm dia)

Providing magnetic oil gauge

Providing winding temperature indicator with RTD

Providing oil surge relay

Providing various types of valves (50 & 25 sqmm Brass Valves)

Providing new 33kV bushing & neutral bushing with metal parts

Providing new 11kV bushing & neutral bushing with metal parts

Providing new marshaling box

Providing Pressure relief valve

Draining out oil from the Power Transformer complete duly collecting the oil in barrels (supplied by MESCOM) and shifting barrels to safe place with proper tightness of lid to avoid moisture

Dismantling of released Power transformer parts like bushings, radiators, conservator tank and releasing of oil for the total weight of the transformer

Moving the faulty Power Transformer from plinth at site using 11 to 20MT truck and trailer (Total mass (-) oil mass) (MT/Mtr)

Loading of faulty power transformer main tank with active parts, with oil/ without oil and loading of Transformer accessories such as radiators, bushings (HV and LV), OLTC drive mechanism, Marshalling...

Transportation of faulty power transformer main tank with oil/ without oilalong with accessories such as radiators, bushings,OLTC drive mechanism, RTCC panel, Marshalling Box, Buchholz relay, PRV, MOG...

Greater than 250 km

Unloading of the faulty power transformer tank with active parts and accessories at firms work

Dismantling faulty transformer for joint inspection at repairer's premises including all activities such as opening of top cover, de-tanking of core and winding, separation of HV/LV coils, conducting ...

Labour for providing new CRGO lamination to the core in place of damaged lamination wherever necessary

Labour for providing solid insulation materials for replacement of all the 3 limbs

Labour for providing new winding in place of damaged winding

Reassembly of Core and winding with new solid insulation (UOM-MVA)

Drying out the assembly of core and winding in oven or vacuum chamber, till the specified insulation resistance values are obtained as per IS (including cost of material and labour) (UOM-MVA)

Cleaning, repairing and painting inside the transformer tank with hot oil bath and acid proof epoxy paint and painting outside the tank with enamel paint after thorough cleaning including the cost of ...

Reconditioning of accessories such as radiators by hot air circulation,Conservator, Marshalling Box, WTI, OTI and repairs to other accessories wherever necessary

Repair and overhauling of OLTC or Diverter switch including change of oil, lubrication and replacement of gaskets and other parts (which are locally available) (UOM-MVA)

Tanking the assembly, giving connection, providing new gaskets and insulating materials conforming to relevant IS, putting back the cover, tightening the fixtures, fixing the bushing etc, brazing of l...

Assembling of Transformer parts like bushings, radiators, Conservator, breather etc.

Filling of oil to the main tank and OLTC tank filtering the oil including filtering till attainment of prescribed BDV valves including labour, filtering equipment along with accessories. The minimum B...

Testing the transformer for routine tests as per IS 2026-1983 in presence of MESCOM Staff at repairer's premises. 1. Ratio Test 2. SC test3. Excitation test4. Magnetic Balance test 5. Vector group tes...

Transportation of faulty power transformer main tank with/ without oil along with accessories such as radiators, bushings, cooling fans, OLTC drive mechanism, Marshalling Box, buchholz relay, PRV, MOG...

Greater than 250 km

Unloading and assembly of the repaired power transformer tank with active parts and all accessories at the destination station of MESCOM

Moving the repaired Power Transformer from 11 to 20MT truck and trailer to the Transformer bed at the destination as specified by MESCOM (MT/Mtr)

Supervising and commissioning of transformer in the presence of RT staff as and when the transformer is ready for commissioning (UOM-MVA)