US 2020/0090851 A1Published application

Transformer iron core

AssigneeHyosung Heavy Industries Corporation

InventorsDo Jin KIM, Chul Jun PARK, Kyo Ho LEE

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Abstract

The present invention relates to a transformer iron core. The present invention comprises: an upper yoke (50); a lower yoke (51) extending in parallel with the upper yoke (50); and an end leg (60) which is installed between the upper yoke (50) and the lower yoke (51), which extends perpendicularly to the longitudinal direction of the upper yoke (50) and the lower yoke (51), and which is coupled to the upper yoke (50) and to the lower yoke (51). The upper yoke (50) and the lower yoke (51) are made by laminating multiple yoke steel plates (50′). The end leg (60) is also made by laminating multiple leg steel plates (60′). The upper yoke (50) and the lower yoke (51) have leg coupling portions (52) on both ends thereof. The end leg (60) has yoke coupling portions (62) coupled to the leg coupling portions (52).

Claims7

Dependent claims

An iron core of a transformer, the iron core comprising:

an upper yoke provided at opposite ends thereof with leg coupling portions, the upper yoke being manufactured by stacking a plurality of yoke steel sheets;
a lower yoke extending parallel to the upper yoke, the lower yoke being provided at opposite ends thereof with leg coupling portions, the lower yoke being manufactured by stacking a plurality of yoke steel sheets;
end legs installed in a direction perpendicular to a direction in which the upper yoke and the lower yoke extend, one end of each of the end legs being coupled to a corresponding one of the leg coupling portions of the upper yoke and the other end of each of the end legs being coupled to a corresponding one of the leg coupling portions of the lower yoke, wherein
the stacked yoke steel sheets and leg steel sheets overlap each other by a predetermined length at a first coupling end of each of the leg coupling portions and a second coupling end of a corresponding one of yoke coupling portions, and
a space is formed between a first open end provided at each of the leg coupling portions and a second open end provided at a corresponding one of the yoke coupling portions.

2 more elements

Dependencies are inferred from the claim text.