The invention relates to a strong current short-circuit testing
transformer with air gaps and an implementation method therefor. An air gap is formed in a lower transverse yoke between every two iron core limbs; the air gaps are filled with insulating plates;
copper shield is mounted on a web plate corresponding to each air gap; the implementation method comprises the steps of fixing the
copper shield on the inner side, corresponding to the position of each air gap, of the pre-processed web plate; horizontally placing a web plate with the
copper shield on an iron core laminated plate platform; putting the insulating plates in a laminating process of iron cores, controlling the thickness of laminated sheets on the two sides of each air gap in the laminating process to be consistent and to be tightly adjacent to the corresponding insulating plates; placing a corresponding
cushion block in the laminating process of the iron core sheets; after
silicon steel sheets are laminated, mounting a web plate with the copper shield on the other side, and assembling a
fastener on the corresponding iron core; and insulating an insulating pull band before erecting the corresponding iron core to ensure that the insulating plate in the air gap does not fall off when the corresponding iron core is erected. According to the
transformer and the implementation method therefor, the iron core residual
magnetism can be reduced; an iron core magnetic
saturation phenomenon caused by excessive residual
magnetism due to frequent
short circuit of the testing
transformer is lowered; and the output
distortion of the test
voltage and current waveform is avoided.