Vacuum circuit breaker is a common method for judging whether the vacuum degree of vacuum tube is degraded or not is the power frequency withstand voltage method. This method is only an arc extinguishing chamber that can judge the degree of vacuum degradation. When the vacuum degree deteriorates to 10-2----10-1 Pa, although the breakdown voltage does not decrease, the arc extinguishing chamber is no longer qualified. ...

The YNZKD-H vacuum switch vacuum tester adopts a new type of excitation coil and uses the magnetron discharge method to test the vacuum of the arc extinguishing chamber without dismantling the arc extinguishing chamber. At the same time, a microcomputer is used for synchronous control and data acquisition and processing, so that the on-site test sensitivity of the vacuum degree of the interrupter reaches 10-5Pa. The outstanding feature of this instrument is the use of a new type of excitation coil and data processing method to achieve vacuum measurement without disassembly. This instrument has the advantages of convenient use, simple operation, non-disassembly measurement and high test accuracy. It is a practical testing instrument and is widely used in electric power, steel, petrochemical, textile, coal, railway and other departments that use vacuum switches.

1. It can quantitatively measure the vacuum degree in the arc extinguishing chamber of various types of vacuum switches;

2. There is no need to disassemble the vacuum switch during on-site measurement;

3. The test results are accurate and reliable;

4. The operation is more simple and convenient;

5. The test data can be saved, printed, and viewed;

6. It is widely used in electric power, steel, petrochemical, textile, coal, railway and other sectors that use vacuum switches;

7. The instrument is light in weight and easy to carry.

1. Test object: various types of vacuum switch tubes.

2. Detection method: adopt a new type of excitation coil to measure the vacuum tube without disassembly.

3. Scope of application: This instrument is a multi-purpose type, which can test various types of vacuum switches.

4. Detection range: 10-5—10-1 Pa

5. Measurement accuracy: 10-5—10-4 Pa, 10%

10-4-10-3 Pa, 10%

10-3-10-2 Pa, 10%

10-2-10-1 Pa, 10%

6. Magnetic field voltage: 1700V

7. Pulse electric field high voltage: 30KV

8. The opening distance of the switch tube when testing the vacuum degree: the opening distance in normal use.

9. Operating environment: -20℃~40℃

10. Host weight: 24kg

11. Dimensions: 410×320×370(mm)

12. Sampler: Magnetron coil