| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve voltage detection accuracy of a transformer for a capacitor type instrument. <P>SOLUTION: In a transformer for a capacitor type instrument, a main capacitor 2 circuit and a voltage-dividing capacitor 3 circuit are connected in series; both ends of the series circuit 1 are led to the input end; and a joint 4 in the series circuit is led to the output end. A vacuum capacitor is used as the high voltage side capacitor (main capacitor 2), and a film capacitor having positive characteristics of capacitance change rate for the temperature (characteristics of capacitance increasing as the temperature rises) and a film capacitor having negative characteristics of capacitance change rate for the temperature (characteristics of capacitance decreasing as the temperature rises) are used in combination as the low voltage side capacitor (voltage-dividing capacitor 3). <P>COPYRIGHT: (C)2012,JPO&INPIT |
