
Scope
This chapter of GB/T 19212.1-2016 is replaced by the following content:
This part of GB/T 19212 specifies the safety of general-purpose voltage regulators and power supply devices with built-in general-purpose voltage regulators. Transformers with built-in electronic circuits are also included in this section p> Note 1: Safety requirements include electrical, temperature, mechanical, and chemical aspects p> Unless otherwise specified, the following "transformers" include general-purpose voltage regulators and power supply devices with built-in general-purpose voltage regulators. The rated power supply voltage shall not exceed 100o V AC, and the rated power supply frequency shall not exceed 500
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