| 摘要 |
Invention herewith described refers to the delta magnetic core for the three-phase transformer with the diameter of the described core (d) circle consisting of the three identical spools (K) made by winding the package of the sheet metal strips joined by the surfaces (S). Each spool (K) is obtained by the successive winding of the packs (P1, P2, P3, P4 ... Pi...Pn) with the misplaced beginnings in relation to the previous margins (m2, m3, m4 ... mi .. mn) on the rounded rectangular pattern (AxB/R) of the various strips of the constant width (w1, w2, w3, w4... wi...wn) in the height of layers (h1 h2, h3, h4...hi...hn) with the cross section of the half of the toothed circle with the diameter (d), whose prominent lateral edges of the wound packs (P1, P2, P3, P4 ... Pi...Pn) on one side lie in a plane inclined relative to the normal of the winding axis for 30° and in conjunction with other spool (K) make the axial channels for the core cooling and on the other side, the post lies on the surface around the pattern (AxB/R) with the diameter (d) leaving the slight edges on the outer surface of the pillar for better distribution of the electric field and easier winding of the windings. By linking the three identical spools (K) by the surfaces (S) there is obtained the delta magnetic core according to this invention.
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