Repairing of damaged Power Transformer of 05 MVA capacity

For 05 MVA Transofrmer:

Labour Charges for: Preliminary inspection of transformers at KESCo site/workshop involving minor repairs at site/workshop.

Labour Charges for: (b) Preliminary inspection of transformers at KESCo site/workshop for estimation involving major repairs. Unloading of T/f at Contractor’s work & repair of t/f as detailed below :- Opening of transformers cover, draining of oil, if any, detanking core and coil assembly, and replacement of damaged parts, minor repair of core & 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 & assembly complete in all respects, retanking 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.

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

HV Bushing 33 KV/37.5 KV

LV Bushing 11 KV

HV Bushing Metal Parts

LV Bushing Metal Parts

Set of Gaskets (rubberized cork)

Silica gel breather with fresh silica gel

Magnetic type oil level gauge with low level alarm contract.

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 minimum 150mm dia with maximum temperature indicator complete with resetting device and alarm contacts etc.

Double float bucholz relay complete with alarm and trip contacts with resetting device

Air release plug

Pressure release valve

Replacement of damage core

Pair of arcing horns 33/37.5 KV

Radiator

Radiator valve

MS Clamping Ring

Winding temperature indicator (complete set)

Fresh transformer oil of standard quality as per IS:335/83 and latest amendment thereof.

Sundry item viz, cover bolts plug caps, screw washers, insulation materials minor repairs of tank other parts required if any, alum. name plate etc.

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

Burnt/damaged leg coils to be retained by the contractor.

Damaged metal parts of bushing to be retained by contractor.

Overhauling of OLTC Replacement of OLTC contact

Overhauling of OLTC Replacement of OLTC Terminal barrier Board

Overhauling of OLTC Replacement of gaskets, lubrication of mechanical system.

Transportation Charge from KESCo Store to Firm works and return to KESCo store.

Laxmi Technocrats

Mahendra Engineering Limited