| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve errors of a primary current and a secondary current in a small current region of a current transformer. <P>SOLUTION: Application, to a rolled silicon core 5, of stress upon insulation layer formation of an insulation layer 2 covering the rolled silicon core 5 is relaxed by a protective case 12; measurement errors of the primary current and the secondary current are reduced by usage of the protective case 13; and a measurement range up to a small current region can be widened. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
