Repair of damaged transformer of 250 KVA 33/0.4 KV

Preliminary inspection of transformers at PVVNL store/workshop involving minor repairs at store/workshop

Preliminary inspection of transformers at PVVNL store/workshop for estimation involving major repairs: repair of transformer cover, draining of oil, if any, di-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 & assembly, complete in all respect, re-tanking after repairs, filling fresh transformer oil, making transfomer 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 (variable base date 01.10.21)

LV leg coils complete with insulation, vanishing by vacuum impregnation (if required as per sample) and baking of coil assembly (variable base date 01.10.21)

HV bushing 33/37.5 KV

LV Bushing 33/0.4 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

Air release plug

Replacement of damaged core

Pair of arcing horns

Radiator valve

Replacement of un repairable radiator of equivelent size with equal fins.

Overhauling of OLTC

Replacement of OLTC contact

Replacement of OLTC terminal barrier board

Replacement of gaskets, lubrication of mechanical system

M. S. Clamping ring

Fresh transformer oil of standard quality as per IS:335/83 and latest amendment thereof.(variable base date 01.10.21)

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

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

Damaged metal parts of bushing to be retained by contractor

Transportation/Carriage charges

Upto 10 kms.

Above 10 kms. To 25 kms.

Above 25 kms. To 50 kms.

Above 50 km. To 100 kms.

Above 100 kms. To 150 kms.

Above 150 kms. To 200 kms.

Above 200 kms. But upto 300 kms.

M/S ALFIA ELECTRICALS

ABC Transormers Pvt Ltd

MAHENDRA TRANSFORMERS PVT. LTD