Vacuum switch vacuum tester, also known as vacuum tester or switch vacuum tester, is a device used for vacuum degree identification of vacuum arc extinguishing chambers. The following is a detailed introduction to the tester:
1. Basic principles
The vacuum switch vacuum degree tester uses magnetron discharge method for measurement. The principle is to pull apart the two contacts of the vacuum switch arc extinguishing chamber by a certain distance, apply electric field pulse high voltage, and place the arc extinguishing chamber inside the solenoid coil or place a new type of electromagnetic coil outside the arc extinguishing chamber. Apply a large current to the coil to generate a pulse magnetic field synchronized with the high voltage inside the arc extinguishing chamber. Under the action of pulsed strong magnetic field and strong electric field, charged ions in the arc extinguishing chamber undergo spiral motion and collide with residual gas molecules for ionization. The resulting ion current is approximately proportional to the residual gas density, i.e. vacuum degree.
2. Main purpose
The vacuum switch vacuum degree tester is mainly used to quantitatively measure the vacuum degree inside the arc extinguishing chamber of various types of vacuum switches. Due to the fact that vacuum circuit breakers are commonly used high-voltage electrical appliances in power systems, and their core component is the vacuum arc extinguishing chamber, this tester has a wide range of applications in power systems.
3. Main features
① High precision measurement: The tester uses ion charge for calibration, effectively suppressing the interference of transient power supply during the testing process, making the test stable and reliable. At the same time, the tester can easily deduct the leakage current caused by environmental factors, thereby improving measurement accuracy.
② Convenient on-site measurement: The tester adopts a new type of magnetic coil, which can surround the arc extinguishing chamber from the side and can be measured without disassembling the arc extinguishing chamber. This greatly simplifies the workload of on-site measurement and improves measurement efficiency.
③ Multi functional interface: The tester is equipped with an RS232 communication interface, which can be connected to a computer to achieve various functions such as downloading vacuum degree ion current curves and estimating lifespan.
4. Technical parameters
The technical parameters of a vacuum switch vacuum degree tester usually include the following aspects:
① Vacuum measurement range: generally 9.999 × 10-5 Pa.
② Ionic current measurement range: generally 9.999 × 10-7A.
③ Measurement error: less than 10%.
④ Measurement resolution: 10 ^ -5 Pa.
⑤ Allowable ambient temperature: generally -20 ℃ 50 ℃ (some products also have -10 ℃ 40 ℃).
⑥ Air humidity: less than or equal to 80% RH.
⑦ Power supply: Generally AC 220V, 50Hz ± 10% (there are also products with AC220V ± 15%, 50Hz).
⑧ External dimensions: Generally 420 × 290 × 210 mm (specific dimensions may vary depending on the product model).
⑨ High voltage output: pulse 30kV 15kHz (specific output may vary depending on product model).
In summary, the vacuum switch vacuum degree tester is a high-precision, convenient and easy-to-use device with wide application value in the power system.
The ZC-313 vacuum Interrupter tester abandons the traditional withstand voltage method and uses the magnetic discharge method for measurement, so there is no need to disassemble the arc extinguishing chamber. The use of a single-chip microcomputer for synchronous control and data acquisition processing improves the on-site testing sensitivity of the vacuum degree in the arc extinguishing chamber. This product has a compact structure, a lightweight and compact model, shorter testing time, higher measurement reliability, stability, accuracy, and more complete functions.
Kvtester Electronics Technology Co.,Ltd. is a high-tech enterprise specializing in power testing, testing, research and development, production, and sales of testing equipment. It has been engaged in the electrical testing industry for many years, and its products are of high quality. We welcome customers to come and purchase. Service hotline: 0086-27-81778799, to learn more, visit the official website: www.kvtester.com
