SHIFTING, ERECTION AND COMMISSIONING OF 160 MVA, 220/132 KV BBL MAKE TRANSFORMER

Amount

Shifting and erection of 160 MVA Transformer.

Carriage of 20KL oil tank from 400KV S/S Sarnath to 220KV S/S Raja Ka Talab (Thathra) Varanasi by private trailer/truck and after completion of work the same oil tank return back to 400KV S/S Sarnath, including cost of loading and unloading of same tank .

Shifting of main tank of 160 MVA transformer B.B.L make with accessories from unloading point to plinth with the help of rail pulling device sleeper etc. upto distance approx 20 mtr. Including tuning if required at 220 KV substation Raja talab (Thathra).

Preparing the transformer oil in oil tank by its centrifuging.

Complete erection of 160 MVA T/F at 220 KV substation Raja talab by erecting radiators headers, conservator tank, HV,LV & Neutral bushing all pipe lines, bucholz relay, OSR,PRV erection of marshalling box, driving mechanism, cooling fans, oil pumps and all others links etc, complete in all respects, and attending oil leakage of any other associated work to complete the job satisfactorily as per instruction manual

Supply of dry Nitrogen gas heaving dew point-60 c to -65 c under vacuum from top value of transformer upto pressure of 5 PSI ( as per technical norms of transformer) and maintaining the same in the main tank for 12 .00 Hrs including cost of nitrogen gas and nitrogen filling device dry cycle.

Create vacuum inside the T/F tank and maintain it for 24.00 Hrs, dry cycle of transformer then filling of nitrogen gas bearing dew point( -60 C to -65 C ) for 24.00 Hrs and repeating the same the PPM value of main tank achieve below 05 PPM filling oil step by step in 160 MVA T/F.

Centrifuging of complete T/F oil in T/F main tank by connecting centrifuging machine to be provided by the contractor and taking the BDV of the oil periodically till the required value in achieved as per direction of supervising engineer(centrifuging machine shall be arranged by contractor)

Earthing of 160 MVA,220 KV transformer with 75x10 mm M.S flat by cutting bending, welding and painting with bus green colour (M.S flat shall be provided by the department free of cost)

Connection of 160 MVA T/F with laying of cable and termination in between turrets, WTI, OTI, bucholz relay, PRV cooling fans pumps, OLTC, marshalling box etc with proper ferruling as per drawing.

Inter connecting all ACSR Zebra conductor jumper on 220 KV and 132 KV side including cutting bending of jumper between equipments(CT to T/F both side)

Testing of centrifuged T/F oil of 160 MVA T/F at 220 KV substation Raja talab from CPRI Noida on chargeable basis. 1- P.P.M 2- B.D.V 3- D.G.A (Dissolved gas analysis

Conducting test by arranging appropriate equipments for following test

SFRA -02 Nos. & WRM

Preeti Enterprises

Omurmila Constructions