1 Scope
This standard specifies the technical requirements, test methods, inspection rules and markings, packaging, transportation, and storage of power transformers and filter chokes (hereinafter collectively referred to as "components") for electronic equipment This standard applies to dry type power transformers and filter chokes for electronic equipment with a working voltage not exceeding 5000 V, a power frequency not exceeding 1050 Hz, and a weight not exceeding 70 kg
2 Normative References
The following documents are essential for the application of this document.
. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document GB/T 2423.1-2008 Environmental Testing for Electrical and Electronic Products Part 2: Test Methods Test A: Low Temperature (IEC 60068-2-1:2007,1DT)GB/T 2423.2-2008 Environmental Testing for Electrical and Electronic Products Part 2; Test method - Test M; Low pressure (IEC 60068-2-2:2007,1DT)GB/T 2423.3-2006 Environmental Testing for Electrical and Electronic Products - Part 2; Test Method: Test Cab: Constant Damp Heat Test (IEC 60068-2-78:2001, 1DT)
GB/T 2423.4-2008 Environmental Testing for Electrical and Electronic Products, Part 2; Test method Test Db alternating damp heat (12 h+12 h cycle) (IEC
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