公开(公告)号：IN2794KON2014A

公开(公告)日：2015-05-08

申请号：IN2794KON2014

申请日：2014-12-03

Applicant: ABB TECHNOLOGY AG

Inventor： OUTTEN SAMUEL S ,  HARTMANN THOMAS A

IPC: H01F27/245 ,  H01F27/26

Abstract: A three step non-linear transformer core is formed from three sections of laminations each having different widths and cross-sectional areas. A first section of laminations is formed by cross-slitting a generally rectangular sheet or strip of metal. A resulting generally triangular segment is then wound upon a mold to form a first section of a core frame having a trapezoidal cross section. A second section of laminations is wound upon the first section of laminations to form a segment of a core frame having a rhombic cross section. The third section of laminations is wound upon the second section of laminations to form a segment of a core frame having a trapezoidal cross section. Each of the first, second, and third sections of laminations are offset from one another by a predetermined angle of offset.

公开(公告)号：CA2874171A1

公开(公告)日：2013-12-12

申请号：CA2874171

申请日：2013-06-06

Applicant: ABB TECHNOLOGY AG

Inventor： OUTTEN SAMUEL S ,  HARTMANN THOMAS A

IPC: H01F27/245 ,  H01F27/26 ,  H01F30/12

Abstract: A three step non-linear transformer core is formed from three sections of laminations each having different widths and cross-sectional areas. A first section of laminations is formed by cross-slitting a generally rectangular sheet or strip of metal. A resulting generally triangular segment is then wound upon a mold to form a first section of a core frame having a trapezoidal cross section. A second section of laminations is wound upon the first section of laminations to form a segment of a core frame having a rhombic cross section. The third section of laminations is wound upon the second section of laminations to form a segment of a core frame having a trapezoidal cross section. Each of the first, second, and third sections of laminations are offset from one another by a predetermined angle of offset.