Two- or multiphase transformer
AssigneeABB Technology AG
InventorsKarl-Heinz Zillmann, Wolfgang Moenig, Benjamin Weber
Life of this patent
Estimating the term…
Abstract
The disclosure relates to a transformer having a yoke which has a crosspiece and at least two limbs, over which limbs a coil is placed in each case, and having at least one carrier on which the crosspiece is fixed and which has bearing faces for the coils. At least two supporting blocks for each coil are mounted on each bearing surface. The supporting blocks are fitted with elastic compensation elements on the coil-side carrying face and have, on their longitudinal side faces, which run perpendicular to a carrying surface, at least one strip which extends the creepage path and runs in the longitudinal direction and parallel to the carrying surface of the supporting block.
Claims20
A transformer comprising:
- a yoke which has a web and at least two limbs;
- a coil placed over each of the limbs;
- at least one mount, to which the web is fixed and which has plural bearing surfaces for plural transformer coils;
- at least two supporting blocks for each coil placed on each bearing surface, wherein the two supporting blocks are stacked one on top of the other;
- elastic compensation elements fitted to a coil-side mounting surface of the supporting blocks;
- at least one strip on longitudinal side surfaces of the supporting blocks which run at right angles to the mounting surface, to lengthen a creepage distance, wherein the at least one strip runs in the longitudinal direction and parallel to the mounting surface of the supporting blocks;
- and
- a projection on one of the two supporting blocks on a contact plane between the two supporting blocks, another of the two supporting blocks having a first depression matched to the projection, wherein the projection and first depression run in the longitudinal direction, and wherein the projection fits into the first depression such that the two supporting blocks are guided with respect to one another by the projection and the first depression.
A supporting block for supporting a transformer having coils, the supporting block comprising:
- a coil side mounting surface for receiving a multiphase transformer coil;
- an elastic compensation element fitted to the coil-side mounting surface for receiving a multiphase transformer coil;
- at least one strip formed on longitudinal side surfaces which run at right angles to the mounting surface and configured to lengthen a creeping distance of the supporting block, wherein the at least one strip runs in a longitudinal direction and parallel to the mounting surface;
- and
- a projection on a contact plane for matching a depression formed on a second supporting block, wherein the projection and depression run in the longitudinal direction, and wherein the projection fits into the first depression such that the two supporting blocks are guided with respect to one another by the projection and the depression.
Dependencies are inferred from the claim text.