Bengaluru Water Supply And Sewerage Board Tender

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

Transportation of transformer using 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 transported Transformer for joint inspection at repairer's premises including all activities such as opening of top cover, de-tanking of core and winding, separation of HV/LV coils, conducting preliminary test required for assessment of repair work to be undertaken, dismantling core etc., in the presence of BWSSB authorized representative.66/11kV Class – 5 MVA

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 thoroughly cleaning including the cost of material the painting of radiator at firm. 66/11 kV class - 5 MVA

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 above class Transformer

Rubberized corksheet/Neotrene 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, including the cost of all materials like gasket, insulating material, bold and nut etc and labour other accessories as repaired works to facilitate the testing.66/11kV Class - 8 MVA

Supply of EHV Grade Electrol Oil

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 of OLTC chamber, removing the diverter switch one by one carefully by using tripped and chain pulley block. Dismantling the diverter switch unit, removing the worn-out resistance from the diverter switch Supply and fixing of new resistance of same capacity as original to the diverter switch without disturbing the other running equipment, cleaning the diverter switch housing chamber to remove the carbon deposit, lowering the repaired diverter switch inside the housing chamber and aligning the centre shaft by using link nut, bolt and washers tighting of resistor conductors carefully without causing damaged to the nearby the contact refilling the good quality high BDV value insulation oil to the diverter switch housing chamber (oil will be supplied by the department) adjusting the micro switch NO, NC contacts and lifting liver for its proper function and covering the chamber by fixing the lid on the top. Testing the operation of tap changing system by giving upto 440 Volts supply from tap position 1 to 25 after satisfactory charging over all 25 taps in forward and reverse direction.

Work of repairs/servicing and overhauling of on load tap changer (OLTC) of upto 66KV/6.6KV 8MVA transformer as specified below: Painting of transformer including platform CTS etc., with one cost of red oxide to the rusted portion of transformer, 2 coats of M/s grey enamel paint, RYB color paint to CT caps for identification etc., Rates should quote inclusive of cleaning of the transformer of all sizes.

Test to be carried out on Power Transformers. Testing the power transformer for IR Values, voltage Ratio at all taps, short circuit test, magnetic balance, Magnetizing current measurement at rated voltage from LV side. - for 8 MVA Power Transformer at Factory after repair of the transformer.

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

Transportation of transformer using 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 - 22.5 MT

WTI with 4 contacts, 15 meters capillary length with built in CCU RTD and external remote indicator, range 0-150 deg C, with SCADA compatibility)

OTI with 2 contacts, 15 meters capillary length with built in CCU, RTD and external remote indicator range 0-150 deg C, with SCADA compatibility

Main Tank Conservator Power Transformer:MOG

Transformer Mounted Protection in Transformer: Buchhloz Relay

Transformer Mounted Protection in Transformer:Oil Surge Relay

Transformer Mounted Protection in Transformer: Pressure Relief Device (PRD or PRV)

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 22.5 MT x 50 m = 1125 MT/m

Test to be carried out on Power Transformers. Testing the power transformer for IR Values, voltage Ratio at all taps, short circuit test, magnetic balance, Magnetizing current measurement at rated voltage from LV side. - for 8 MVA Power Transformer at Factory after repair of the transformer.

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. 5 MVA to 6.3/8 MVA Power Transformer

Bushing for power transformer condenser type OIP bushing for power transformer - 72.5 kV/800Amps

Terminal connector Clamps for Bushings for Power Transformer: Suitable for 72.5kV class bushing to suit Twin Moose / Single Drake Conductor.

Conventional Bushing with metal parts for Power Transformers

Control Valves for Power Transformers: Drain Valve (100mm to 200mm Siz) suitable for: 110 kv and below class

Top / Bottom Filter Valve (50mm to 100mm size) suitable for: 110 kv and below class Transformers

Marshalling Box (With IP 55 degree of protection, TBs, Earthing Arrangement, mounting arrangements for various components etc.,)

Terms and Conditions

All the works should be carried out as per KTPP Act and as per specification or as directed by the Engineer- in-charge.

Rates quoted above are including clearance of the site (prior to commencement of work and its completion) in all conditions of site, moisture, weather etc.

The Board reserves the right to bifurcate the work and entrust if warranted and if found expedient and advantageous to the Board of lowest approved rates.

The BWSSB reserves the right to accept or reject any OR all of the tenders without assigning any reason.

Rates should be Exclusive of all taxes, insurance and freight charges.

Rates should be quoted by the contractor/firm on Item war basis both in figures and in words.

The payment will be made after completion of work.

The firm should upload turnover certificate which is counter signed by chartered accountant.

The firm should have requisite man power, machineries at their disposal to complete the work within the stipulated period, the necessary documents should be enclosed.

The firm has to upload "Form of tender" in the standard format or otherwise the tender will be liable for rejection.

Rates are Exclusive of GST & other taxes & duties.

Signature of the Contractor