Tender for Emergency and Essential Work for Complete Replacement of On Load Tap Changer (OLTC), Overhauling and Servicing of 66kV/6.6kV 8 MVA Transformer No.2 (Tr. Sl. No. 5497/1) at CWSS 4th Stage Phase 1 Pump House in 220 kV/66 kV Substation, Harohalli (Short Term Tender)

Tender for Emergency and Essential Work for Complete Replacement of On Load Tap Changer (OLTC), Overhauling and Servicing of 66kV/6.6kV 8 MVA Transformer No.2 (Tr. Sl. No. 5497/1) at CWSS 4th Stage Phase 1 Pump House in 220 kV/66 kV Substation, Harohalli (Short Term Tender)

OLTC of Power Transformers: Retrofitting of existing OLTC by new one of other make including mounting arrangement, fixing of drives, drive linkages, modification in the maintenance lid, leads etc., as...

110 kV and below class: OLTC Conservator Tank

Fixed and moving contacts for Selector switch:

Protection micro switch

Draining out oil from the Power Transformer complete duly collecting the oil in barrels. shifting barrels to safe place with proper tightness of cork/lid to avoid entry of moisture

(in the Station pre...

Moving the Transformer to & fro the plinth.

Weight of 8 MVA Power Transformer-25t

For 8 MVA, Distatnce to be moved-50 m 25t x 50m = 1250t/m

1. From Plinth to Loading Point- 1250 t/m (for Transportatio...

Assembly and Dis-Assembly of transformer parts like bushing, radiators, draining oil from the transformer etc for the total weight of the transformer.

Weight of 8 MVA power transformer - 25 MT

Loading of Faulty/Repaired Transformer tank with active parts and accessories at firm's site or BWSSB 220Kv Station

Unloading of the Faulty/Repaired Transformer tank with active parts and accessori...

Transportation of transformer using 21 MT to 40 MT Truck & Trailer up to 250km.

66/6.6kV 8 MVA Transformer of 25t

From Harohalli 220kv Station to Factory Site-250 Km radius

From Factory Site to Haroha...

Dismantling 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 prelimi...

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

110 kV and below class Transformer - 8 MVA 66kV Transformer - 1

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

110 kV and below class Transformer - 8 MVA 66kV Transformer - 1

Tanking the assembly, 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 mate...

EHV grade Transformer Oil in new steel barrel of 210 litre capacity

8 MVA Transformer - 7525

Total Qty = 7525+334= 7859Ltrs

Rebate towards the released oil is 60% of latest IEEMA Rate

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.

8 MVA Transformer...

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,...

Testing & Commissioning of Power Transformers

Inspection of wires and ferrules. Inspection of wiring of protective devices, cooling fans, oil flow pumps, OLTC, RTCC, bushing etc., as per technical spe...

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

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 8 MVA Transformer - 1

Main Tank Conservator Power Transformer: MOG

8 MVA Transformer - 1

Transformer mounted Protection in Power Transformers Buchholz relay

Transformer mounted Protection in Power Transformers Oil Surge relay (OSR)

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

Main Tank for Power Transformers Dehydrating Silicagel Breather Assembly

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 Transformer - 1

Bushing for power transformer condenser type OIP bushing for power transformer - 72.5 kV/800Amps 8 MVA Transformer

Terminal connector Clamps for Bushings for Power Transformer:

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

8 MVA Transformer - 3

Conventional Bushing with metal parts for

Power Transformers 12.1 kV / 800 A - 1250 A - 2000 A

Control Valves for Power Transformers Drain Valve (100 mm to 200 mm size) suitable for-110 kV and below class: 66kV 8 MVA Transformer - 3Nos

Top/Bottom Filter Valve (50 mm to 100 mm size) suitable for-110 kV and above class Transformers: 8 MVA Transformer - 3Nos