A single phase ultra large capacity strong current short circuit test transformer comprises an upper oil tank (9) and a lower oil tank (8). Two single phase two column type iron cores (17) are disposed in the upper oil tank and the lower oil tank there are totally four iron core main columns and a coil sleeves each ...

A method for achieving converter transformer for suppressing DC bias magnet comprises increasing the seaming width of the transformer core lamination  which comprises in detail calculating the width and the height of each stage of lamination according to the reserved seaming width of the lamination  the sectional area...