| 摘要 |
FIELD: electrical engineering; oil-immersed power transformers. ^ SUBSTANCE: system stacks are built of similar groups of layers, three layers per group. Inner and outer contours of all layers are rectangular in shape. Inner and outer contours of all layers are aligned. Plates of legs are rectangular and trapezoidal and those of yokes are trapezoidal and beveled through 45 deg. All layers of each stack are assembled of similar sets of plates of five type varieties. Plates of first layer of extreme left and intermediate legs are trapezoidal and those of extreme right leg are rectangular. All plates of second layer are disposed as mirror images of axis drawn over outer vertical edge of extreme right leg plate. Central-leg plate of third layer is rectangular. Group layers are assembled so that junction areas of plates on straight lines are different for each layer of group. Such design ensures better distribution of magnetic field flux density at magnetic system corners compared with prior art. ^ EFFECT: reduced loss at magnetic system corners. ^ 1 cl, 4 dwg |
