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GDGK-307
CHONGQING GOLD
20A High Voltage Switch Tester Switchgear Testing Equipment
What have we noticed?
In high-voltage power systems, circuit breakers are critical protective devices. However, traditional testing methods often have a blind spot: we can only know whether it is moving or not, but it is difficult to determine whether it is moving healthily or not.
A conventional tester can tell you the closing time and speed. But what if the institution starts to get stuck, the buffer performance decreases, or the arc extinguishing contacts start to wear severely? These early signs of mechanical failure cannot be detected by traditional equipment.
The result is that many circuit breakers are "qualified" in routine tests, but suddenly fail after running for a few months. This is not a problem with the equipment, but rather a lack of comprehensive testing methods.
What can this device help you discover?
GDGK-307 is a fully functional circuit breaker tester that integrates vibration fingerprint analysis and dynamic resistance measurement. It is not just about measuring time, but also conducting a 'full body examination' of the circuit breaker.
| Here is a real example: |
 Scenario: A SF6 circuit breaker that has been running for many years, with regular time test results consistently within the qualified range, but the operation and maintenance personnel always feel that there is something "off" with the sound of the mechanism. Using GDGK-307: We simultaneously collected the closing time curve and vibration fingerprint curve. Result: After comparing the vibration curve with the historical template, it was found that there were significant "time offsets" and "Euclidean distance variances" exceeding the standard. Analysis and positioning display - there is an abnormality in the buffer inside the operating mechanism. Conclusion: During maintenance, it was found that the sealing ring of the buffer was aging when disassembled. If only traditional instruments are used, this issue will be ignored until the buffer completely fails, causing the circuit breaker to refuse to operate. |
This is one of the values of our product: it provides a means of diagnosing the deep state of machinery without disassembly or disintegration.
Advantage
1. Vibration fingerprint detection - early fault warning
There is no need to change the original wiring, and even the mechanical characteristics of the circuit breaker can be tested under live conditions (as stated in the instruction manual).
Automatically match the measured vibration curve with the template, provide time variance and Euclidean distance variance, and quantify the health level of the equipment.
Can the fault location be quickly located: is it a mechanism? Is it a buffer? Or is it the contact system?
2. Arc extinguishing contact analysis module - without opening the cover, know the loss
Draw a real-time dynamic resistance time curve using 100A dynamic DC test current.
Automatically calculate the length of the arc contact and the input time of the arc contact.
Directly assess the degree of wear of the arc contact, guide maintenance and replacement, and avoid excessive maintenance or disrepair.
3. 6+12 channel design - adaptable to complex fracture surfaces
12 time measurement channels, of which 6 are isolated and independent, specifically used for unit measurement of multi break circuit breakers (such as double break and four break).
4 analog input channels: 1 travel sensor+3 vibration sensors (can also be used for other analog sensors).
Support graphite contact circuit breakers (such as Siemens series): output 25A/100A DC, with a judgment standard of resistance less than 4m Ω.
4. Built in DC power supply and contact resistance testing
Internal DC power supply: 24V~265V adjustable, maximum 20A, can directly drive the closing/opening coil.
No need to purchase an additional micro ohmmeter, directly use the 100A test current of this machine to complete the contact resistance measurement.
Technical parameters
| Project | parameters |
| Time measurement range | 4000ms， Error<0.1ms, resolution 0.01ms |
| Linear sensor | 0~250mm / 0~25mm， Error<0.5mm/<0.05mm |
| Dynamic resistance test current | 25A~100A can be combined |
| Contact resistance measurement | 0~10m Ω, error<0.5% RDG+0.05% FS |
| Vibration measurement range | 0~5000G， Error<3% |
| Internal DC power supply | 24~265V / 0~20A |
| working environment | -10 ℃~50 ℃, humidity<80% |
Applicable scenarios
Annual preventive test of GIS/SF6 circuit breaker: Abnormal internal operating mechanism was discovered through vibration fingerprint comparison.
Maintenance of generator outlet circuit breaker: Accurate measurement of pre insertion time and value of closing resistance is required.
Graphite contact circuit breaker test: Conventional testers cannot accurately determine the true closing time of graphite contacts.
Live detection during operation: Using vibration sensors to complete mechanical characteristic detection without changing the primary circuit.
Multi break tank circuit breaker: Use A3/B3/C3 and A4/B4/C4 isolation channels to measure the time of each break separately.
Partner
Contact us
Contact Person: Christine Gou
Whatsapp/Wechat/Mobile: + 86 15123029885
Email: gold05@hy-industry.com
