To detect a vacuum circuit breaker, a vacuum degree detector is needed. The vacuum degree detector, as its name implies, is an instrument for detecting the degree of vacuum. It is a high-voltage detection appliance commonly used in power systems, and the core component is a vacuum interrupter. So how can we use it for detection?

First of all, this vacuum tester for detecting vacuum circuit breakers is a precise instrument. The wiring density of its circuit board is very large, so it is generally required to be stored in a dry place. If the environment is humid, it needs to be powered on frequently. If the current value of the circuit breaker vacuum tester shows zero after the test, it is necessary to check whether the surface of the lower arc extinguishing chamber is clean. Because the surface is not clean, the change value of the leakage current may be greater than the ionization current value, so the measured value minus the leakage current will be less than zero and will be judged as zero by the instrument. When this happens, as long as the surface of the arc-extinguishing chamber is wiped clean, the test is carried out. Generally speaking, the vacuum degree value obtained in this way is more accurate. When using the circuit breaker vacuum tester, the high-voltage output line should not touch the human body to avoid electric shock. Do not touch the high-voltage line and the magnetron current line when the high-voltage indicator light is on, which also has the risk of contact. The circuit breaker vacuum tester removes the printing paper when the instrument is powered off, in order to avoid damage to the printer. And when changing the paper, open the front panel, pinch the two clips at both ends of the printer with your index finger and thumb and gently drag it out of the printer, make the paper outlet slightly higher than the instrument panel, and do not pull too far. Cut the port part of the new paper into a pointed shape, insert it into the paper inlet of the printer, turn on the power switch of the instrument, and press the print button to make the paper go out a certain distance from the upper end of the printer, and insert it into the exit slit of the panel to export. Close the printer panel, and the paper is loaded.