公开(公告)号：EP2963662A4

公开(公告)日：2016-11-23

申请号：EP13876561

申请日：2013-03-01

申请人： HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD

发明人： MIKOSHIBA RYOUSUKE ,  ENDO HIROYUKI ,  SHINOHARA MAKOTO ,  TAKAHASHI TOSHIAKI ,  SATO TATSUNORI

IPC分类号： H01F27/30 ,  H01F5/04 ,  H01F27/28 ,  H01F27/32 ,  H01F30/00 ,  H01F30/12 ,  H01F41/12

CPC分类号： H01F30/12 ,  H01F27/28 ,  H01F27/30 ,  H01F27/32

摘要： The present invention is intended, in view of eliminating the possibility of destroying the insulation of varnished coils, to address the weakening of the mechanical strength in the coil axis direction in time of short circuiting in the manufacturing process of coils without varnishing. The invention relates to an oil-filled transformer mounted with an iron core formed of an amorphous ribbon or a silicon steel sheet and a coil of which both high-voltage and low-voltage windings are formed of flat or round conductor lead wires wound around the iron core, in which a thermosetting resin-impregnated fiber is wound in the coil axis direction around the coil in a tap line wire lead part, and further the thermosetting resin-impregnated fiber is wound in the outermost layer of the coil. As the thermosetting resin-impregnated fiber, a glass binding tape made of epoxy resin is used.