RANGE : Upto 10 MVA in 11, 22, 33 & 66 KV Class.
Power Star covers a wide range of Oil Filled Distribution Transformers with Off Circuit Tap Changer (up to 5000 KVA in 11 KV & 33 KV Class) conforming to the international standards of quality and safety. These transformers are designed and developed using latest technologies and can be provided with a variety of terminations so as to suit the requirements for new installation or replacement.
Optimum efficiency is ensured by delicate proportioning of core and winding looses using CRGO M3 to M5 MOH Lamination, Electrolytic Grade 99.9% pure copper, with Transposition in L.V. coil for current sharing in parallel Conductors, Electric grade press paper, boards and mineral oil. Thus better regulation is achieved resulting in longer life. Careful designing also reduces noise level to the minimum.
|Capacity||–||Up to 10 MVA|
|No. of Phases||–||3 Phase|
|Voltage Range||–||11 KV / 22 KV / 33 KV / 66KV|
|Tapping||–||± 5% Taps on H.T. Side in steps of 2.5% each.|
|Vector Group||–||Dyn 11|
|Winding||–||Aluminium / Copper Wound|
|Terminals||–||As per required|
|Rating & Diagram plate||–||Earthing terminals|
|Lifting lugs||–||Thermometer pocket|
|Oil Conservator with drain plug||–||Air release hole with plug|
|Oil Level indicator||–||Explosion vent with diaphragm|
|Top-filter Valve||–||Inspection cover.|
|Silica gel breather||–||Drain –cum-bottom-filter valve|
|Cooling radiators||–||Uni / Bi- directional rollers|
|Buchholz relay with alarm and trip contact||–||Magnetic oil level gauge with alarm contact|
|Pressure Release Valve||–||Marshalling box to house O.T.I. and W.T.I|
|Cable Box on H.T. Side||–||Cable Box on L.T. Side.|
|Oil Temp. Indicator with alarm & trip contact||–||RTCC (Remote Tap Changer Control) Cubicle|
|Winding Temp. indicator with alarm & trip contact||–||Electronic Automatic Voltage Controller|