| 摘要 |
PURPOSE:To discriminate the quantity of residual water in a dielectric layer of a capacitor by measuring dielectric loss at a temperature close to 100 deg.C. CONSTITUTION:When the dielectric layer is heated up to a temperature close to 100 deg.C, i.e. the boiling point of water, the loss of the dielectric layer having much residual water is extremely increased. It is supposed that the phenomenon takes place because the molecular motion of water increased when the electric layer is heated up to about 100 deg.C. Insulating constitution of samples A, B, C consists of a capacitor arranging 18mu insulating paper and a 36mu plastic film between electrode foils. Consequently, the dried degree of a production process or water absorption in a long usage can be decided. |
