Method and apparatus for ultrasonic detection a high-pressure state in the vacuum switch

摘要

Method for determining the high pressure of the present invention relates electrical device, and an apparatus for detecting the pressure state of the electrical device. A method and apparatus for detecting the pressure state of the [SOLUTION] breaker inside is incident on the outer wall of the vacuum circuit breaker through the acoustic waveguide, an ultrasound high intensity, then the response to be re-transmitted and reflected I hear the signal. To determine the presence of a high-pressure state undesirable by using characteristics of the response signal, and it determines the pressure of the circuit breaker inside. [Selection Figure Figure 5