REPAIR AND TESTING OF OF 33/11 KV COPPER WOUND POWER TRANSFORMERS OF CAPACITIES RANGING FROM 5 MVA TO 10 MVA

Repairing of 5 MVA Transformers

Labour charges for Preliminary inspection of transformers at PVVNL site/ workshop involving minor repairs at site/workshop.

Labour charges for Pre-inspection of transformers at PuVVNL site/ workshop for estimation involving major repairs unloading of T/f at Contractor's works & repair of T/f, as detailed below:- Opening of transformer cover, draining of oil, if any de-tanking core and coil assembly, and replacement of damaged parts, minor repair of core and tank (if required). Cleaning washing of dust & dirt etc. from all parts including core tank, Cooling tubes of radiators, removal of damaged parts, requiring replacement, fitting, fixing of new parts making connection and assembly complete in all respects, re-tanking after repairs, filling fresh transformer oil, making transformer ready for tests & testing for all tests as per clause 16.0 of Technical specification.

HV leg coils complete with insulation varnishing by vacuum impregnation (if required as per sample) and baking of coil assembly. (Base date 01.08.2023)

LV leg coils complete with insulation varnishing by vacuum impregnation (if required as per sample) and baking of coil assembly. (Base date 01.08.2023)

HV bushing 33/37.5 KV

LV bushing 11 KV

HV bushing metal parts

LV bushing metal parts

Set of gaskets (rubberized cork)

Silicagel Breather with fresh silicagel

Magnetic type oil level gauge with low level alarm contact.

Tapping switch 33,37.5 KV complete with handle.

Tapping Switch handle.

Oil drain valve incorporating sampling device (with narrow orifice) & having suitable arrangement for locking.

Filter Valve.

Dial type thermometer of 150 mm dia with max. temp. indicator complete with resetting device and alarm contacts etc.

Double float bucholz relay complete with resetting device and alarm contacts etc.

Air release plug.

Replacement of damaged core and lamination.

Pair of arcing Horn 33,37.5 KV

Radiator Valve

Replacement of OLTC contact.

Replacement of OLTC Terminal barrier board

Replacement of gaskets, lubrication of mechanical system.

M.S. Clamping Rings.

Winding Temperature indicator (complete set)

Fresh transformer oil of standard quality as per IS: 335/83 and latest amendment thereof. (Base date 01.08.2023)

Sundry item viz. cover bolts, plug caps, screw & washers, insulation materials minor repairs of tank & rediators other parts required if any, Aluminium Name Plate etc.

Painting inside & outside of transformer including radiator tubes, conservator with suitable primer and two coats of suitable paint of dark green colour and marking etc.

Burnt/Damaged leg coils to be retained by the contractor. (Base date 01.08.2023)

Rusted/Damaged core lamination to be retained by the contractor.

Damaged metal parts of bushing to be retained by contractor (copper & brass).

Averege transportaion charges of damaged/repaired Transformer from site/store to contractors works & repaired Transformer from contractor works to site/store including all other charges such as loading/ unloading transit insurance, all taxes etc. (Each Side)

Repairing cost of 01 No 5 MVA Power Transformer

Repairing of 8 MVA Transformers

Labour charges for Preliminary inspection of transformers at PVVNL site/ workshop involving minor repairs at site/workshop.

Labour charges for Pre-inspection of transformers at PuVVNL site/ workshop for estimation involving major repairs unloading of T/f at Contractor's works & repair of T/f, as detailed below:- Opening of transformer cover, draining of oil, if any de-tanking core and coil assembly, and replacement of damaged parts, minor repair of core and tank (if required). Cleaning washing of dust & dirt etc. from all parts including core tank, Cooling tubes of radiators, removal of damaged parts, requiring replacement, fitting, fixing of new parts making connection and assembly complete in all respects, re-tanking after repairs, filling fresh transformer oil, making transformer ready for tests & testing for all tests as per clause 16.0 of Technical specification.

HV leg coils complete with insulation varnishing by vacuum impregnation (if required as per sample) and baking of coil assembly. (Base date 01.08.2023)

LV leg coils complete with insulation varnishing by vacuum impregnation (if required as per sample) and baking of coil assembly. (Base date 01.08.2023)

HV bushing 33/37.5 KV

LV bushing 11 KV

HV bushing metal parts

LV bushing metal parts

Set of gaskets (rubberized cork)

Silicagel Breather with fresh silicagel

Magnetic type oil level gauge with low level alarm contact.

Tapping switch 33,37.5 KV complete with handle.

Tapping Switch handle.

Oil drain valve incorporating sampling device (with narrow orifice) & having suitable arrangement for locking.

Filter Valve.

Dial type thermometer of 150 mm dia with max. temp. indicator complete with resetting device and alarm contacts etc.

Double float bucholz relay complete with resetting device and alarm contacts etc.

Air release plug.

Replacement of damaged core and lamination.

Pair of arcing Horn 33,37.5 KV

Radiator Valve

Replacement of OLTC contact.

Replacement of OLTC Terminal barrier board

Replacement of gaskets, lubrication of mechanical system.

M.S. Clamping Rings.

Winding Temperature indicator (complete set)

Fresh transformer oil of standard quality as per IS: 335/83 and latest amendment thereof. (Base date 01.08.2023)

Sundry item viz. cover bolts, plug caps, screw & washers, insulation materials minor repairs of tank & rediators other parts required if any, Aluminium Name Plate etc.

Painting inside & outside of transformer including radiator tubes, conservator with suitable primer and two coats of suitable paint of dark green colour and marking etc.

Burnt/Damaged leg coils to be retained by the contractor. (Base date 01.08.2023)

Rusted/Damaged core lamination to be retained by the contractor.

Damaged metal parts of bushing to be retained by contractor (copper & brass).

Averege transportaion charges of damaged/repaired Transformer from site/store to contractors works & repaired Transformer from contractor works to site/store including all other charges such as loading/ unloading transit insurance, all taxes etc. (Each Side)

Repairing cost of 01 No 8 MVA Power Transformer

Repairing of 10 MVA Transformers

Labour charges for Preliminary inspection of transformers at PVVNL site/ workshop involving minor repairs at site/workshop.

Labour charges for Pre-inspection of transformers at PuVVNL site/ workshop for estimation involving major repairs unloading of T/f at Contractor's works & repair of T/f, as detailed below:- Opening of transformer cover, draining of oil, if any de-tanking core and coil assembly, and replacement of damaged parts, minor repair of core and tank (if required). Cleaning washing of dust & dirt etc. from all parts including core tank, Cooling tubes of radiators, removal of damaged parts, requiring replacement, fitting, fixing of new parts making connection and assembly complete in all respects, re-tanking after repairs, filling fresh transformer oil, making transformer ready for tests & testing for all tests as per clause 16.0 of Technical specification.

HV leg coils complete with insulation varnishing by vacuum impregnation (if required as per sample) and baking of coil assembly. (Base date 01.08.2023)

LV leg coils complete with insulation varnishing by vacuum impregnation (if required as per sample) and baking of coil assembly. (Base date 01.08.2023)

HV bushing 33/37.5 KV

LV bushing 11 KV

HV bushing metal parts

LV bushing metal parts

Set of gaskets (rubberized cork)

Silicagel Breather with fresh silicagel

Magnetic type oil level gauge with low level alarm contact.

Tapping switch 33,37.5 KV complete with handle.

Tapping Switch handle.

Oil drain valve incorporating sampling device (with narrow orifice) & having suitable arrangement for locking.

Filter Valve.

Dial type thermometer of 150 mm dia with max. temp. indicator complete with resetting device and alarm contacts etc.

Double float bucholz relay complete with resetting device and alarm contacts etc.

Air release plug.

Replacement of damaged core and lamination.

Pair of arcing Horn 33,37.5 KV

Radiator Valve

Replacement of OLTC contact.

Replacement of OLTC Terminal barrier board

Replacement of gaskets, lubrication of mechanical system.

M.S. Clamping Rings.

Winding Temperature indicator (complete set)

Fresh transformer oil of standard quality as per IS: 335/83 and latest amendment thereof. (Base date 01.08.2023)

Sundry item viz. cover bolts, plug caps, screw & washers, insulation materials minor repairs of tank & rediators other parts required if any, Aluminium Name Plate etc.

Painting inside & outside of transformer including radiator tubes, conservator with suitable primer and two coats of suitable paint of dark green colour and marking etc.

Burnt/Damaged leg coils to be retained by the contractor. (Base date 01.08.2023)

Rusted/Damaged core lamination to be retained by the contractor.

Damaged metal parts of bushing to be retained by contractor (copper & brass).

Averege transportaion charges of damaged/repaired Transformer from site/store to contractors works & repaired Transformer from contractor works to site/store including all other charges such as loading/ unloading transit insurance, all taxes etc. (Each Side)

Repairing cost of 01 No 10 MVA Power Transformer

M/S BALAJI TRANSFORMERS

SHIVAM INDUSTRIES

SWASTIK INDUSTRIES

National Enterprises

SAMTECH INDUSTRIES

M/S LAKSHMI ELECTRICALS

J P ELECTRICAL INDUSTRIES

Laxmi Technocrats

Mahendra Engineering Limited

KAMLA TRANSFORMERS PVT. LTD.

Kailash Transformer

SHIV ENGINEERING

BHARATI ELECTRICO

STAR ENGINEERING INDUSTRIES

M/S TECHNICAL ASSOCIATES LIMITED

APS POWER TECH INDIA PVT LTD

Keshav Transformers