The testing items for sulfur hexafluoride (SF6) circuit breakers should include the following:
1. Measurement of insulation resistance 2. Measure the resistance of each phase conductive circuit 3. AC withstand voltage test 4. Test the equalizing capacitance of the circuit breaker 5. Measure the opening and closing time of the circuit breaker 6. Measure the opening and closing speed of the circuit breaker 7. Measure the synchronization and coordination time of the opening and closing of the main and auxiliary contacts of the circuit breaker 8. Measure the input time and resistance value of the circuit breaker closing resistance 9. Measurement of insulation resistance and DC resistance of circuit breaker opening and closing coils 10. Circuit breaker operating mechanism test 11. Bushing current transformer test 12. Measure the moisture content of SF6 gas in the circuit breaker 13. Sealing test, measure the leakage of SF6 circuit breaker 14. Inspection of gas density relay, pressure gauge, and pressure operated valve
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China