The main changes in "Electrical Control Equipment (GB/T 3797-2005)" compared to GB/T 3797-1989 are as follows: 1. Due to the invalidation of GB 4720-1984 "Electric Control Equipment Part 1: Low Voltage Electrical Control Equipment", the words "Electric Control Equipment Part 2" have been removed and the standard name has been modified. 2. Revised the project and content of environmental testing, added damp heat testing, and canceled transportation testing. 3. The no-load test, low-voltage current test, and load test in the type test project are classified as power on operation test. 4. The content of anti-interference test has been modified, with specific requirements referring to GB 7251.1-2005 "Low voltage switchgear and control equipment - Part 1: Type testing and partial type testing complete equipment" and IEC 61800-3 "Speed regulation electrical transmission systems - Part 3: Electromagnetic compatibility standards and specific test methods for products". 5. Due to different product characteristics, the electrical performance test has been modified to a recommended project, with specific requirements provided in the product technical documents
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