This specification specifies the requirements, test methods, inspection rules and markings, packaging, transportation, and storage requirements for variable frequency and variable voltage power supplies (hereinafter referred to as power supplies). This specification applies to variable frequency and voltage power supplies used for power frequency and voltage testing of electronic equipment; It is also suitable for various specialized and universal variable frequency and variable voltage power supplies for electromagnetic compatibility testing. 2. The provisions contained in the following standards are incorporated into this specification by reference. At the time of publication of this specification, all versions shown are valid. All standards will be revised, and parties using this specification should explore the possibility of using the latest versions of the following standards. GB 191-90 Packaging, Storage and Transportation Pictorial Symbols GB 1002-80 Single-phase Plug and Socket Types Basic Parameters and Dimensions GB 4793-84 Safety Requirements for Electronic Measuring Instruments GB 5465.1-85 Principles for Drawing Graphical Symbols for Electrical Equipment GB 5465.2-85 Graphical Symbols for Electrical Equipment GB 6587.1-86 Environmental Testing Guidelines for Electronic Measuring Instruments GB 6587.2-86 Temperature Testing for Electronic Measuring Instruments GB 6587.3-86 Humidity Testing for Electronic Measuring Instruments GB 6587.4-86 Vibration Testing for Electronic Measuring Instruments GB 6587.5-86 Impact Testing for Electronic Measuring Instruments GB 6587.6-86 Electronic Measuring Instruments Equipment transportation test GB 6587.8-86 Power frequency and voltage test for electronic measuring instruments GB 6592-86 General provisions for errors in electronic measuring instruments GB 6593-86 Quality inspection rules for electronic measuring instruments GB 6833-86 Electromagnetic compatibility test specifications for electronic measuring instruments GB 11463-89 Reliability test for electronic measuring instruments GBn249.1-84 An interface system for programmable electronic measuring instruments
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