A circuit breaker refers to a switching device that can close, carry, and break current under normal or abnormal circuit conditions. Circuit breakers can be used to distribute electrical energy, infrequently start asynchronous motors, and protect power lines and motors. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high and low voltage boundaries is relatively vague, and generally, those above 3kV are referred to as high-voltage breakers. According to the operation mode, there are electric operation, energy storage operation, and manual operation; According to structure: there are universal and plastic shell types; Classified by usage category: selective and non selective; According to the arc extinguishing medium, there are oil immersed, sulfur hexafluoride, vacuum type, and air type; According to movement speed: there are fast and regular types; According to the number of poles: there are single pole, two pole, three pole, and four pole, etc; According to installation methods, there are plug-in, fixed, and drawer types
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