Repair of 220kV 160MVA and 100MVA Power Transformer

Fixed Charges for 220/132/33kV 160 MVA Transformers

Dismantling of Transformer’s including core. -Cleaning of all healthy parts , including coils, laminations, tap changer radiator tubes, conservator, breather etc. Rebuilding of core laminations. -Re-assembly of core and winding with new ones including brazing, soldering and insulating. -Vacuum drying/vapour phase drying. -Re-assembly of complete Transformer including accessories. -Changing of all gaskets and making terminal connections including all accessories of transformer. -Oil filling and filtration.

Internal painting of transformer

External spray painting of transformer.

Labour charges for overhauling of OLTC.

Cost of providing new insulation for leads (phase and neutral), tap leads, inter winding connections and inter coil connections. Filling of nitrogen gas for transportation & storage.

Cost of all tests as per clause-2.0 and 9.4 , Section II, after repairs of transformer including heat run test & pressure test.

Total(Sum of 1.01 to 1.06) for 160MVA Transformer to be entered by the bidder

TRANSPORTATION CHARGES : To & fro transportation charges including loading & unloading and requisite dragging applicable on average basis from and to anywhere in MP

Fixed Chargers for 100MVA Transformers

Dismantling of Transformer’s including core. -Cleaning of all healthy parts , including coils, laminations, tap changer radiator tubes, conservator, breather etc. Rebuilding of core laminations. -Re-assembly of core and winding with new ones including brazing, soldering and insulating. -Vacuum drying/vapour phase drying. -Re-assembly of complete Transformer including accessories. -Changing of all gaskets and making terminal connections including all accessories of transformer. -Oil filling and filtration.

Internal painting of transformer

External spray painting of transformer.

Labour charges for overhauling of OLTC.

Cost of providing new insulation for leads (phase and neutral), tap leads, inter winding connections and inter coil connections. Filling of nitrogen gas for transportation & storage.

Cost of all tests as per clause-2.0 and 9.4, Section II, after repairs of transformer including heat run test & pressure test.

Total(Sum of 2.01 to 2.06) for 100MVA Transformer to be entered by the bidder

TRANSPORTATION CHARGES : To & fro transportation charges including loading & unloading and requisite dragging applicable on average basis from and to anywhere in MP

Description of Work / Item(s)

For 160 MVA Transformer

Cost of new copper coil with paper covering insulation only of all the limbs of power transformers i.e HV, IV & LV side of transformers.

Cost of lamination that may be required to be replaced. (Approx wt 160MVA - 9000Kg)

Scrap salvage value of HV, IV & LV copper with paper covering insulation, which will be retained by Bidder .

Scrap salvage value of laminations which will be retained by Bidder .

For 100 MVA Transformer

Cost of new copper coil with paper covering insulation only of all the limbs of power transformers i.e HV & LV side of transformers.

Cost of lamination that may be required to be replaced. (Approx wt 100MVA - 7000Kg)

Scrap salvage value of HV & LV copper with paper covering insulation, which will be retained by Bidder .

Scrap salvage value of laminations which will be retained by Bidder .

Description of Work / Item(s)

Repairing of OLTC

Cost of Major repair work including replacement of defective parts

Cost of Minor repair work including replacement of defective parts.

Cost of following parts of OLTC indicating freight charges, rate of taxes and duties etc for 220 KV Power Transformers

Transition Resistance

Main moving contact assembly.

Fixed contact assembly

Half assembly right

Half assembly left

Oil seal of OLTC.

Gasket for top & bottom cover

Cost of new OLTC for 220 KV/132/33KV, 160 MVA Power Transformer (three phase unit)

Cost of new OLTC for 220/33+33 KV, 100 MVA Power Transformer

Prices of Accessories

245KV, 1250A OIP Condenser Bushing.

145KV, 1250A OIP Condenser Bushing.

72.5 KV, 1250A OIP Condenser Bushing.

OTI with repeater.

WTI with repeater

Buchholz relay

Magnetic coil level guage

Silica gel breather

Raditor

Cooling fans

Pressure relief device

OSR relay

Main conservator for 160MVA Transformer

Main conservator for 100MVA Transformer

Pronal make air cell for 160MVA Transformer

Pronal make air cell for 100MVA Transformer

Charges towards conducting following tests on repaired 220kV transformer already included in A(6) of Schedule-I (Part-A)

Heat Run Test

Pressure Test on Tank

Additional charges towards conducting impulse tests as per CL9.4.2 of Section II , on repaired 220kV transformer to be paid if required to be carried out .

MAHATI INDUSTRIES PRIVATE LIMITED

MAHATI INDUSTRIES PRIVATE LIMITED

MAHATI INDUSTRIES PRIVATE LIMITED

Cost of new copper coil with paper covering insulation only of all the limbs of power transformers i.e HV, IV & LV side of transformers.

Cost of Major repair work including replacement of defective parts

Transition Resistance