The vacuum switch vacuum degree tester is mainly used to detect electrical equipment that relies on the principle of vacuum arc extinguishing. Its core detection object is the vacuum arc extinguishing chamber (vacuum bubble) and its related components. The following is a detailed explanation of the specific scope of application and detection objects:
1. Core detection object: Vacuum arc extinguishing chamber
① Medium and high voltage vacuum circuit breaker
Suitable for detecting the arc extinguishing chamber of vacuum circuit breakers with voltage levels such as 10kV, 35kV, 110kV, including indoor types (such as ZN63, ZN12, etc.) and outdoor types (such as ZW7, ZW32, etc.).
Check whether the vacuum degree of the arc extinguishing chamber has decreased due to long-term operation, seal failure, or mechanical damage.
② Vacuum load switch
Used to detect the vacuum arc extinguishing chamber in load switches, ensuring its insulation and arc extinguishing performance during opening and closing operations.
③ Vacuum contactor
Suitable for vacuum contactors in industrial control fields such as motor starting and capacitor switching, to detect whether their vacuum degree meets the requirements for frequent operation.
④ Column mounted vacuum switch
Test the vacuum stability of the arc extinguishing chamber in outdoor environments for column mounted vacuum switches (such as ZW20, ZW32, etc.) in distribution lines.
2. Expand detection range
① Retired or stocked vacuum arc extinguishing chamber
Inspect idle or retired vacuum arc extinguishing chambers and evaluate whether they can be put back into use or need to be scrapped.
② Vacuum arc extinguishing chamber after maintenance
After repairing the arc extinguishing chamber (such as replacing contacts and cleaning the inner wall), check whether the vacuum degree has returned to the qualified range.
③ New vacuum arc extinguishing chamber quality inspection
Used for quality inspection in the production process of vacuum arc extinguishing chambers to ensure that the vacuum degree of the factory products meets the standard (usually requiring ≤ 6.6 × 10 ⁻ ² Pa).
3. Unsuitable detection object
① Non vacuum switchgear
Such as SF circuit breakers, oil circuit breakers, air switches, etc., because their arc extinguishing principle does not rely on vacuum environment, there is no need to detect vacuum degree.
② Arc extinguishing chamber with completely lost vacuum degree
If there is severe air leakage or breakdown in the arc extinguishing chamber, the tester may not be able to accurately measure, and other methods (such as power frequency withstand voltage test) need to be combined to make a comprehensive judgment.
③ Vacuum switch in live operation
The test needs to be conducted when the equipment is in a power outage state, and it is not possible to directly detect the real-time vacuum degree of live equipment (but the status can be indirectly evaluated through offline detection).
4. Typical application scenarios
① Preventive testing of power equipment
Regularly check the vacuum level of the vacuum switch to detect potential faults in advance and avoid sudden power outages.
② Equipment fault diagnosis
When the vacuum switch experiences abnormal discharge, opening and closing failures, etc., check the vacuum degree to confirm whether it is the cause of the fault.
③ Handover acceptance test
Before the new equipment is put into operation, check whether the vacuum degree of the vacuum extinguishing chamber meets the requirements of the technical agreement.
④ Research and Teaching
Used for research on the performance of vacuum arc extinguishing chambers, university experimental teaching, or technical training.
5. The correlation between detection principle and vacuum degree
① Magnetron discharge method: The vacuum degree is calculated by measuring the ion current in the arc extinguishing chamber, and the ion current is negatively correlated with the vacuum degree (the lower the vacuum degree, the greater the ion current).
② Applicability basis: The vacuum degree directly affects the insulation strength and breaking capacity of the arc extinguishing chamber. When the vacuum degree drops to the level of 10 ⁻ Pa, the equipment may not be able to extinguish the arc normally and needs to be replaced in a timely manner.
6. Summary
The core detection object of the vacuum switch vacuum degree tester is the vacuum arc extinguishing chamber, covering various types of medium and high voltage vacuum switch equipment and their components. Its detection range covers the entire life cycle of the equipment (production, operation, and scrapping), but is not applicable to non vacuum switches or live operating equipment. By regularly checking the vacuum level, the reliability of the equipment can be effectively guaranteed and the operation and maintenance costs can be reduced.
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
