公开(公告)号：US20210057141A1

公开(公告)日：2021-02-25

申请号：US17045932

申请日：2018-04-23

申请人： Zhongbo WANG ,  Martin Alsina NAVARRO ,  Andre Luiz MORENO ,  Wei CHEN ,  Hui LI ,  Siemens Aktiengesellschaft ,  Hainan Jinpan Smart Technology Co., Ltd. ,  HAINAN JINPAN ELECTRIC RESEARCH INSTITUTE CO., LTD.

发明人： Zhongbo Wang ,  Martin Alsina Navarro ,  Andre Luiz Moreno ,  Wei Chen ,  Hui Li

IPC分类号： H01F27/26 ,  H01F27/28 ,  H01F41/02

摘要： A transformer core for a dry-type transformer includes a laminated construction having several groups of stacked laminations that form a step-lap sequence of laminations. Each group in the step-lap sequence has a mean length different than an adjacent group in the step-lap sequence and has at least two identical laminations per group, wherein at least one group has at least four identical laminations. Methods of assembling a transformer core are also provided, as are other aspects.