The screening uses two soft magnetic metal strips above and below conductors bent around them leaving space between them. The two soft magnetic strips of metal above and below the double conductors (to lie by the go- and return-conductor at a certain distance one above the other), which flat-wise might have about one and a half times this width and are bent almost in a semicircle at the sides to the respective other strip so that on both sides a strip with the height of half the distance remains free.
