| 摘要 |
<p>PURPOSE:To reduce the thickness of an insulator provided between a side plate for tighting core and a laminated core. CONSTITUTION:After a through hole for tightening is bored through a laminated core 1, insulating plates 21, and side plates 22, the end sections of the through holes 23 board through the side plates 22 are enlarged to make a counter sink, etc., and the insulating plates 21 and size plates 22 are successively put on both sides of the laminated core 1 by aligning the through holes to each other. Then a bolt 4 is inserted through the through hole and the core 1 is tightened by means of a bolt 4 and a nut 5, with washers 6 and 7 respectively being put between the head of the bolt 4 and nut 5 and the side plates 22. Since the potential gradients at the end sections of the through hole of the core and at the end secitons of the side plates are reduced and the dielectric strength is improved, the thickness of the insulating plates, etc., can be reduced and the space factor of the core can be improved.</p> |
