＂Dielectric loss and volume resistivity tester＂ test princip
2020-07-22 20:52source：guoyi.sgvisit：次
The function of "dielectric loss and volume resistivity tester": It is a test instrument for dielectric loss and volume resistivity of liquid insulating media such as insulating oil. There are many domestic manufacturers producing "dielectric loss and volume resistivity tester", mainly in Wuhan. We take the "GYYJS dielectric loss and volume resistivity tester" of Guoyi Technology as an example to illustrate. A good "dielectric loss and volume resistivity tester" should have the following characteristics: 1. Internal structure: integrated dielectric loss oil cup, temperature controller, temperature sensor, dielectric loss test bridge, AC test power supply, standard capacitor , High resistance meter, DC high voltage source and other main components. 2. Heating part: high-frequency induction heating method is adopted, which has the advantages of non-contact between the oil cup and the heating body, uniform heating, fast speed, and convenient control. 3. Power supply part: AC test power supply adopts AC-DC-AC conversion method, which can effectively avoid the influence of mains voltage and frequency fluctuation on the accuracy of dielectric loss test. Internal standard capacitor: The dielectric loss and capacitance of this capacitor are not affected by ambient temperature, Humidity and other influences ensure that the accuracy of the instrument is consistent after long-term use.
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