Why does vacuum vacuum reduce the degree of vacuum, you know?

First, the Structural Parts of the switch body defect caused a small amount of gas leakage. This kind of leakage is usually not detected, only after a long time of accumulation, reduced to a certain degree, can be detected.
Secondly, the manufacturing materials of the interrupter contain certain gas Chemical Industry impurities, which slowly evolve over a long period of time, causing the pressure of the vacuum interrupter to rise.
Third, during the operation of the switch, the arc extinguishing chamber is damaged due to external force, resulting in a decrease in the Vacuum degree of the Vacuum Products vacuum switch.
Fourth, overvoltage and current protection values must be set before the test boost to prevent accidental open circuit during the test. During the test, power the work first and then the power supply. After cutting off the power supply, you must cut off the power supply to avoid damaging the instrument. Otherwise, the factory Settings will be affected.

Fifth, when the inverter controller prompts overvoltage protection, overcurrent protection or discharge protection, please exit the test, reset the voltage, current protection value or check whether the grounding line is good, and then enter the test.