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Power Transformers
Power Transformers
Protective Devices : Bucholtz relay with alarm and trip contact. Oil temperature Indicator with alarm and trip contact. Winding temperature Indicator with alarm and trip contact. Magnetic oil level gauge with alarm contact. Marshaling box to house O.T.I. and W.T.C. Optional Accessories on Request : Neutral C.T Shut – off valves Annunciation window Standard Fittings : Rating & Diagram plate Earthing terminals Lifting lugs Thermometer pocket Air release hole with plug Oil conservator with drain plug Explosion vent with diaphragm Jacking lugs Oil level indicator Drain-cum-bottom-filter valve Top filter valve with plug BI – directional rollers Silica gel breather Cooling radiators
Rectifier Connected to a diode or thyristor rectifier Booster Used in catenary to collect the return current from the rail Windmill GSU transformer installed inside the wind mill tower Marine Propulsion to feed the ship propulsion system Phase Shifter to help control power flow in transmission lines
Specifications : 3 Phase, 50 Hz in voltages of 11 kv,22kv, 33kv Class A insulated Vector group Dyn 11 and other as per required Continuous duty On Load / Off Load Tap changer Copper wound as per relevant standards Painting as per IS – 5 specification HV side cable boxes LV side busduct
Main Features : Megnetic circuit – Lamination CRGO M3 to M5, MOH and ZDKH type. Electric circuit – Electrolytic grade 99.9% pure copper with transposition ii LV. coll for current sharing hi parallel conductors. Dielectric circuits – Electric grade press paper, boards and mineral oil. Thermal circuit – DNAN through natural convection for effective cooing through anal and radial ducts.