After the high-voltage switch is used for a long time, its vacuum degree needs to be measured regularly, so a high-voltage switch vacuum tester is needed. There are many problems that need to be paid attention to during the use of this equipment, so the high-voltage switch vacuum test What are the precautions when using the instrument? This article will give you a brief introduction.

1. The instrument shell should be grounded reliably;

2. In order to improve the accuracy of the measurement, the outer surface of the vacuum switch should be wiped clean before testing;

3. Correctly select the tube type of the vacuum tube;

4. During the test, the high voltage will output about 20KV, the insulation distance it maintains and the high voltage on the low-voltage line side of the main body (the recommended distance between 0.5μm and the human body), the field voltage of about 1600V High voltage output terminal, please pay attention to safety!

5. When testing the instrument, the wiring should be connected to the magnetron coil and vacuum tube first, and then to the instrument. After the test, the test wire connected to the instrument should be removed first, and then the connection with the magnetron coil and vacuum tube; if you forget to connect the magnetron coil, press the measurement button directly, the power supply should be cut off immediately, and the magnetron coil should reconnect. Please note that the output terminal of the magnetic field voltage will have a higher voltage at this time. Please do not touch the conductor part when wiring, so as to avoid the residual current causing pressure damage to the capacitor.

6. After the measurement is completed, there may be a residual voltage of about 40V at the magnetic field output terminal, please pay attention to safety!

7. During the test, if an abnormality occurs, first turn off the power and contact the manufacturer. Do not open the case by yourself

8. Measure, power off the instrument, and wait for 5 seconds before disconnecting. Disconnect when the device is connected to the line to disconnect the test, and then transfer to a vacuum, the magnetic coil is connected.

9. Select the "Save" command to save the current LCD data. Select the "print" command to print out the current LCD data. If you want to measure again, press the "reset" key or press the "+" or "set" key to place the cursor at the "return" position, and then press the "enter" key to return to the interface.

Electric workers need to pay attention to the above issues when testing the vacuum of the high-voltage switch when using a high-voltage switch vacuum tester. Only when the test is performed can the effect of the instrument be brought into play.