following routine test must be done ? Measurement of windings resistance ? Ratio polarity and phase relationship for vector group verification. ? Measurement of no load loss and no load current ? Measurement of load losses. ? Impedance voltage test. ? Insulation resistance test. ? Induced overvoltage test. ? Operation of tap changer, buchholz, WT1, and OT1, etc. ? Physical inspection ? Source voltage withstand test ? Core insulation voltage test ? Temp rise test and impulse test **** Hidden Message ***** vipin sharma 21438 SAU Company: baghlaf al zafer co. ltd E-mail: vipin.sharma@baghlafsteel.com **** Hidden Message ***** vipin.sharma@baghlafsteel.com
