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From the Laboratory to the Production Line: The Harsh Testing Journey of Golden Solid State Relays

25-12-11

In a clean and bright customer factory, a solid state relay with the Godelon logo is controlling the smooth operation of a production line worth tens of millions of yuan. It may not be eye-catching, but its "birth" has undergone a harsh testing journey comparable to that of aerospace equipment. From a semiconductor chip to a reliable industrial control component, Godelon solid state relays must pass through seven harsh testing checkpoints, each answering the same question: "Are you ready?" 


The first stage: "Gene screening" at the component level

Testing begins with the most basic semiconductor chips: 


100% Chip Testing: Every MOSFET or thyristor purchased is subjected to extreme parameter testing on Godel's test bench, including leakage current testing (leakage value at rated voltage), switching speed testing, and thermal resistance testing. 


Accelerated aging screening: Full-load operation at 125℃ for 168 hours reduces the early failure rate by 90%. 


X-ray inspection: Non-destructive internal structure inspection is conducted on each batch of packaged chips to eliminate potential hazards such as solder voids and gold wire misalignment. 


In 2023, the Gordon Test Center tested over five million power chips. Only the top 30% that passed all tests were used for product manufacturing. This extremely strict screening ensures the superiority of the product's "genes". 


Level Two: The "Ultimate Challenge" of Modularization

After being assembled into modules, the testing enters an even more rigorous stage: 


Electrical limit test: 

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Long-term withstand voltage test at 1.5 times the rated voltage 


Instantaneous surge impact test at 10 times the rated current (simulating motor startup) 


Test of reverse recovery characteristics of anti-parallel diodes 


Environmental stress testing: 


Temperature cycling test: Cycle between -55℃ and 150℃ for 1000 times. 


High temperature and high humidity test: Operation for 1000 hours under conditions of 85℃/85%RH. 


Vibration test: Conduct a sweep vibration test within the frequency range of 10 to 2000 Hz. 


In these tests, there are clear disqualification criteria: any parameter drift exceeding 5%, any failure of protective functions, or any physical damage all indicate a test failure. Last year, 12% of the modules were eliminated at this stage. 


Level 3: "Simulated Combat" of Intelligent Protection

The reliability of the protection function is verified through specially designed fault simulation tests: 


Short-circuit protection test: Create an artificial short circuit at the output terminal to verify whether the protection action time is within 10 microseconds. 


Overload endurance test: Run continuously at 1.25 times the overload until the protection operates, and repeat 1000 times. 


Thermal protection accuracy test: Precisely control the temperature of the heat sink to verify the triggering accuracy of the overheat protection point (error ±2℃). 


The most rigorous test is the comprehensive fault simulation: it simultaneously mimics multiple fault conditions such as grid surges, load short circuits, high environmental temperatures, and abnormal control signals to assess the "stress resistance" of the relay. Only products that pass this test are considered capable of surviving in complex industrial environments. 


Level 4: Long-term Operation "Time Test"

Sampling products enter the long-term aging test room: 


High-temperature full-load life test: Continuous operation at the rated load for 10,000 hours under the maximum operating temperature. 


High-frequency switch life test: Conduct on-off operations at a frequency of 1 kHz until the cumulative number of switchings reaches 1 billion times. 


Actual load simulation test: Connect real motors, heaters and other loads to simulate on-site working conditions. 


These long-term tests not only verify the lifespan but more importantly, collect performance degradation data. Gordon's data shows that after 10,000 hours of testing, the average increase in on-resistance for high-quality products is only 3.2%, while the industry average is 8-15%. 


Level 5: "Survival Challenge" in Extreme Environments

Special environment tests simulate the most severe application scenarios: 


Salt spray corrosion test: Continuous testing for 500 hours in a 5% sodium chloride spray. 

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Dust test: Testing the sealing performance in a closed space filled with silicate powder. 


Chemical gas testing: Exposure to industrial harmful gases such as sulfur dioxide and hydrogen sulfide 


Immersion test: Products with IP67 rating need to be immersed in 1-meter-deep water for 30 minutes. 


The on-site data of a photovoltaic power station in the northwest region is highly consistent with the laboratory test results: after three years of operation in a sandy environment, the failure rate of the Godel solid-state relay is only 85% of the predicted value in the laboratory, demonstrating better environmental adaptability than expected. 


Level 6: The "Stealth Test" of Electromagnetic Compatibility

In a multimillion-dollar electromagnetic compatibility laboratory: 


Radiation emission testing: Verify whether the electromagnetic interference generated by the product itself is below the limit value. 


Immunity tests: including electrostatic discharge, radio frequency electromagnetic fields, fast transient burst pulses, surge impulse, etc. 


Harmonic testing: Analyze the harmonic components and their contents generated during the switching process. 


Gordon's products typically pass tests with a margin of over 20% above the standard. For instance, in the surge immunity test, the international standard requires withstanding a 1kV surge, while Gordon's product design standard is 4kV. 


Level 7: On-site Application "Practical Drill"

The final test is conducted in an actual application scenario: 

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OEM customer production line testing: Running a complete production cycle continuously on the customer's equipment. 


Multi-brand system compatibility testing: Testing in conjunction with mainstream PLCs such as Siemens, Rockwell, and Schneider. 


Extreme condition simulation: Reproducing the special working conditions at the customer's site in the laboratory 


A crane manufacturer at a certain port once put forward a special requirement: the relay must be able to reliably engage when the power supply voltage drops to 70% of the rated value. For this, Gordon developed a dedicated test program, and the final product performed perfectly on site. 


The Quality Philosophy Behind Test Data

Gordon's testing system is not merely for screening out defective products, but also for: 


Establish an accurate life model: Calculate the expected lifespan under actual usage conditions based on accelerated test data. 


Design improvement points are identified: Each failure case is analyzed in detail and fed back to the R&D department. 


Generate personalized application guidelines: Based on test data, provide customers with the best usage suggestions for specific application scenarios. 


In a certain precision electronic manufacturing enterprise in Shenzhen, the technicians of Godeln, based on the test data, customized a special suggestion for the limit of switching frequency for the client, which extended the actual service life of the relay from the designed 5 years to 8 years. 


From the laboratory to the production line, each Godel solid-state relay carries over 200 test data points and has undergone an accelerated test equivalent to 20 years of on-site operation. These seven rigorous test stages are Godel's solemn commitment to the word "reliability" and also the confidence that enables Godel's products to offer an industry-leading warranty period. 


We believe that true quality is not inspected but designed, manufactured and tested in. Choosing Gorden means choosing the outstanding quality that has been refined through countless trials and choosing a reliable long-term partner. When you see Gorden's products on the production line, please remember: it is ready because it has gone through a rigorous journey that you can hardly imagine.


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