It is large and medium-sized equipment, dimension of clamping plate is 660*500mm,length of upper and lower core-pulling stroke can be determined according to the product(it needs lower core-pulling foundation pit when the lower core pulling exceeds 300mm). It is mainly used for transformer, 12KV-1250A,3150A insulating cylinder, contact box, 40.5KV bushing, bending plate, upper and lower shell of SF6 insulating cover, etc