Tender For the Work of Overhauling, Servicing, Testing and Commissioning of 8 MVA Transformer No-1 Bearing Sl.No.2800037767 of CWSS Stage-II & III Stage 66/6.6kV Sub Station at T.K. Halli coming under jurisdiction of AEE(K-O&M)1-2

Tender For the Work of Overhauling, Servicing, Testing and Commissioning of 8 MVA Transformer No-1 Bearing Sl.No.2800037767 of CWSS Stage-II & III Stage 66/6.6kV Sub Station at T.K. Halli coming under jurisdiction of AEE(K-O&M)1-2

Moving the (Faulty)Transformer from the plinth. Maximum allowable distance is 50 metre (More than 50 metre, approval of D(T) has to be obtained)

Draining out oil from the Power Transformer complete duly collecting the oil in barrels (supplied by BWSSB) shifting barrels to safe place (in the Station premises only) with proper tightness of cork/...

Dis-assembly of Transformer parts like bushings, radiators, filling oil into Tr. etc., for the total weight of the 8 MVA power transformer - 25t

Loading of the transformer tank with active parts and accessories at Stage 2 & 3 Substation at T K Halli.

Transportation of Transformer, CTs, PTs, Breakers,

C&R Panels, 11 kV Switchgears and EHT LAs only. 21 MT to 40 MT Truck & Trailer up to 250km. From T K Halli to Factory.

Unloading of the faulty transformer tank with active parts and accessories at Firm's site.

Dismantling faulty Transformer for joint inspection at repairers premises including all activities such as opening of top cover, de tanking of core and winding, separation of HV LV coils, conducting p...

Cleaning, repairing and painting inside the Transformer Tank with hot oil bath and acid proof epoxy paint and painting outside the tank with enamel paint after thorough cleaning including the cost of ...

Reconditioning of accessories like Radiators, Conservator by hot air circulation along with pressure test of radiators and reconditioning of Transformer mounted mechanical relays 110 kV and below clas...

Rubberised corksheet/Neoprene rubber Gaskets as necessary for complete Transformer

110kV and below Class

Drying of Power Transformers

Drying of Power Transformer at factory: Drying of active parts of Transformer in Oven

110kV and below class Transformer

Tanking the assembly (repaired Transformer) giving connection providing new gasket, insulating materials confirming to IS putting back the cover tignting the fixtures, fixing the bushing etc, includin...

EHV Grade unused uninhibited mineral insulating oil in new steel barrels of 210 litres capacity strictly confirming to IEC 60296 (latest version) (Greater than 170kV class)

Filling of oil to main tank and OLTC tank, filtering the oil including filtering till attainment of prescribed BDV value including labour, filtering equipment along with accessories.

Work of repairing of diverter switch and replacement of resistance upto 66KV/6.6KV 8MVA Transformer as specified below: Removing the supply connection of diverter switch draining out the diluted oil o...

Main Tank Conservator Power Transformer:

Transformer mounted Protection in Power

Transformer mounted Protection in Power

Oil Surge relay(OSR)

Transformer Mounted Protection in Transformer:

Pressure Relief Device (PRD or PRV)

Terminal connector Clamps for Bushings for Power Transformer:

Suitable for 72.5kV class bushing to suit Twin Moose / Single Drake Conductor.

Control Valves for Power Transformers Drain Valve (100 mm to 200 mm size) suitable for 110 kV and below class

Top/Bottom Filter Valve (50 mm to 100

mm size) suitable for 110 kV and above class Transformers

a) Testing the Transformer for routine tests as per IS 2026-1983 if repairs are carried out at Repairer's work.

b) Testing the Transformer for IR values, Voltage ratio at all Taps, Short Circuit Test,...

Loading of the repaired transformer tank with active parts and accessories at Firm's site.

Transportation of Transformer, CTs, PTs, Breakers,

C&R Panels, 11 kV Switchgears and EHT LAs only. 21 MT to 40 MT Truck & Trailer up to 250km. From factory to T K Halli.

Unloading of the repaired transformer tank with active parts and accessories at Stage 2 & 3 Substation at T K Halli.

Assembly of transformer parts like bushing, radiators, draining oil from the transformer etcfor the total weight of the transformer.

Weight of 8 MVA power transformer - 25 T

Main Tank for Power Transformers

Dehydrating Silicagel Breather Assembly

Moving the (faulty) transformer from the plinth. Weight of 5 MVA power transformer - 22.5 MT

Distance to be moved -50 m

a) Testing the Transformer for routine tests as per IS 2026-1983 if repairs are carried out at Repairer's work.

b) Testing the Transformer for IR values, Voltage ratio at all Taps, Short Circuit Test,...

Wiring of Transformer marshaling box, bucholtz relay, fixing Thermometer, OLTC up to control panel and assisting in testing and commissioning by RT/MT Firm engineers.

8 MVA Power Transformer: