| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for measuring core loss simply and accurately measuring power loss distribution in a magnetic steel sheet or in a laminated body of the same which composes a transformer core and the like. <P>SOLUTION: The method for measuring the core loss of the magnetic steel sheet or the laminated body of the same measures an alternate current core loss value of an object to be measured, which is the magnetic steel sheet or the laminated body of the same, by thermography from the temperature rising rate of the surface, wherein the magnetic field change rate until reaching a predetermined excitation condition is 0.004-0.1 T/sec, and the temperature rising rate of the object to be measured is measured in not less than 1 sec and within not more than 40 sec after reaching the excitation condition. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
