Product Overview：
A common method for evaluating whether the vacuum degree of a vacuum interrupter has deteriorated is the power frequency withstand voltage test. However, this method can only identify arc-extinguishing chambers with severely degraded vacuum levels. When the vacuum deteriorates to a range of 10⁻² to 10⁻¹ Pa, the breakdown voltage may remain unchanged, even though the arc-extinguishing chamber is already unqualified.
The Vacuum Switch Vacuum Tester addresses this limitation by employing a newly designed excitation coil and utilizing the magnetron discharge method to measure the vacuum level of the arc-extinguishing chamber—without the need for disassembly. With microcomputer-based synchronous control and advanced data acquisition and processing, the instrument achieves a field testing sensitivity of up to 10⁻⁵ Pa.
The most outstanding feature of this instrument is its ability to perform accurate vacuum measurement using a novel excitation coil and intelligent data processing, eliminating the need to dismantle the vacuum switch.
Widely used in industries such as electric power, steel, petrochemical, textile, coal, and railway—wherever vacuum switches are applied—the Vacuum Switch Vacuum Tester is a practical and reliable solution for on-site vacuum assessment.
Product function:
Vacuum degree testing function
Utilizes advanced testing principles such as magnetron discharge method to accurately measure the internal vacuum degree of the vacuum interrupter, determining whether there are issues such as air leakage or vacuum degradation in the interrupter.
Wide measurement range, suitable for vacuum switches of different voltage levels;
Test results are accurate and reliable;
Effectively identifies insulation risks caused by degraded vacuum performance.
Interrupter performance evaluation
By detecting key parameters of the interrupter, comprehensively evaluates its operating condition:
Determines whether the vacuum interrupter meets operational requirements;
Assesses the degree of equipment aging;
Identifies potential fault hazards in advance.
Insulation performance testing
The instrument can assist in inspecting the internal insulation condition of the interrupter, determining:
Insulation capability of the vacuum gap;
Insulation performance between electrodes;
Whether there is a risk of breakdown.
Product Characteristics：
1、Capable of quantitatively measuring the vacuum level in various types of vacuum switch arc-extinguishing chambers.
2、No need to disassemble the vacuum switch during on-site testing.
3、Provides accurate and reliable test results.
4、Features a more user-friendly and convenient operation process.
5、Allows users to save, print, and review test data.
6、Widely used in industries such as electric power, steel, petrochemical, textile, coal, and railways where vacuum switches are commonly applied.
7、The Vacuum Switch Vacuum Tester is lightweight and easy to carry.
Technical Parameters：
| Test object | انواع لوله های سوئیچ خلاء |
| Test method | Non-disassembly measurement of vacuum tubes using a new excitation coil |
| دامنه کاربرد | This instrument is a multi-purpose machine, which can measure various types of vacuum switches. |
| محدوده اندازه گیری | 10-5～10-1خوب |
| دقت اندازه گیری | 10-5～10-4خوب 10% |
| 10-4～10-3خوب 10% | |
| 10-3～10-2خوب 10% | |
| 10-2～10-1خوب 10% | |
| ولتاژ میدان مغناطیسی | 1700 ولت |
| میدان الکتریکی پالسی ولتاژ بالا | 30 کیلو ولت |
| هنگام آزمایش خلاء، فاصله باز شدن لوله را تغییر دهید | Normal use of open distance |
| از محیط استفاده کنید | -20℃~40℃ |
| Host weight | 24 کیلوگرم |
| ابعاد | 410×320×370 میلی متر3 |
| نمونه بردار | سیم پیچ مگنترون |
Application Scenarios
Preventive maintenance of high-voltage switchgear in substations — Perform periodic condition testing on long-term in-service vacuum circuit breakers. During substation maintenance, use the tester to evaluate the vacuum performance of the interrupter, promptly identify vacuum degradation caused by long-term operation, mechanical wear, or seal deterioration, and provide a basis for equipment maintenance, replacement, and condition assessment.
Condition testing of high-voltage switchgear and ring main units — Perform on-site rapid testing of vacuum switchgear in distribution systems. Suitable for urban distribution networks, industrial enterprise substations, and user-side distribution systems. By testing vacuum interrupter performance, evaluate the insulation reliability of switchgear and reduce the risk of outages caused by switch failures.
Quality inspection during power equipment manufacturing — Used for performance verification during the production of vacuum interrupters and vacuum circuit breakers. During product development, production assembly, and factory inspection, test the vacuum degree of interrupters to ensure products meet design standards and quality requirements, improving equipment reliability before delivery.
Maintenance of power plants and large industrial electrical systems — Perform safety testing on plant high-voltage switchgear. Applied in thermal, hydro, nuclear power plants, and large industrial power distribution systems, conduct regular testing on critical vacuum circuit breakers, evaluate interrupter health status, and ensure continuous power supply and stable operation of production equipment.
FAQ about Vacuum Interrupter Test Set
Q: What is a vacuum interrupter tester, and what does it primarily detect?
A: A vacuum interrupter tester is a specialized power testing device used to inspect the internal vacuum condition and insulation performance of the interrupter in high-voltage vacuum circuit breakers. By measuring the internal vacuum degree and assessing vacuum retention capability, it effectively evaluates the operational reliability of the vacuum circuit breaker.
This equipment is primarily used in vacuum circuit breaker production inspection, installation commissioning, preventive maintenance, and fault diagnosis, to identify potential issues such as interrupter air leakage, vacuum degradation, and reduced insulation performance.
Q：Why is it necessary to measure the vacuum degree with a vacuum interrupter tester?
A: The vacuum interrupter relies on a high-vacuum environment to achieve rapid arc extinction and insulation recovery between contacts. If the internal vacuum level decreases, the arc-quenching capability and insulation performance will be affected, potentially leading to reduced breaking capacity, contact erosion, or even equipment failure.
By regularly measuring the vacuum degree, the performance degradation trend of the interrupter can be identified in advance, preventing power outages caused by equipment failure and improving the operational safety of the power system.
Q: Why is regular vacuum degree testing required for vacuum circuit breakers?
A: During long-term operation, vacuum interrupters may be affected by mechanical impact, temperature variations, contact wear, and seal aging, which can gradually degrade internal vacuum performance.
Regular testing can:
Identify vacuum performance abnormalities in advance;
Prevent circuit breaker interruption failure;
Reduce unexpected power outages;
Extend equipment service life.
