Technical Parameters
1. Vacuum measurement range: 9.999×10-1～1×10-5
2. Ion current measurement range: 9.999×10-1～1×10-7
3. Measurement error: ＜5%
4. Measurement resolution: 10-5pa
5. Allowable ambient temperature: -20℃～50℃
6. Air humidity: ≤80%RH
7. Power supply: AC, 220V, 50Hz±10%
8. Dimensions: 420×290×210 (mm)
9. High voltage output: pulse ≤30kV15kHz
10. Weight: 8kg
Product Overview
Automated Vacuum Degree Testeris a high-voltage electrical appliance commonly used in power systems. Its core component is the vacuum arc-extinguishing chamber. Since the arc-extinguishing chamber operates based on vacuum conditions, it is not as easy to detect its quality as oil switches or SF6 switches. Traditionally, the method used by vacuum circuit breaker users to judge the vacuum degree of the arc-extinguishing chamber is the power frequency withstand voltage method, which can only roughly judge the vacuum degree of the vacuum switch.
Automated Vacuum Degree Testeris an identification device for the vacuum degree of vacuum arc-extinguishing chambers. It uses a single-chip computer as the main control unit, and the testing process is fully automated. The sampling design of this instrument has changed from the previous method of using current peak for calibration to using ion charge for calibration. This effectively suppresses the interference of transient power supply during the test, making the test stable and reliable. Since a computer is used as the main control unit, the instrument can easily deduct the leakage current caused by environmental factors. The most prominent feature of this instrument is that it realizes the non-disassembly measurement of the vacuum arc-extinguishing chamber, directly displays the vacuum degree value, enabling vacuum circuit breaker users to grasp the vacuum state of the arc-extinguishing chamber in detail, providing a reliable basis for planned replacement of the arc-extinguishing chamber, providing strong protection for the safe operation of the power grid, and overcoming the defect that the power frequency withstand voltage method can only judge whether the arc-extinguishing chamber is scrapped.
This instrument has high measurement accuracy, simple operation, convenient portability, and strong anti-interference ability. It is especially suitable for on-site testing by power supply units, and is one of the essential instruments for the production, installation, commissioning, and maintenance of vacuum circuit breakers.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
