Scope
This standard specifies the technical requirements, inspection methods, inspection rules, and requirements for marking, packaging, transportation, and storage of relay protection and safety automatic devices, serving as the basis for the design, manufacturing, testing, and operation of such products This standard is applicable to various relay protection and safety automatic devices (hereinafter referred to as devices) with voltage levels of 110kV and above, and devices with voltage levels below 11kV shall refer to the implementation In addition to meeting the provisions of this standard, the device should also comply with its relevant national or industry standards
Normative reference documents (partial)
The references in the following documents are essential. 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 191 Packaging, Storage and Transport Pictorial Symbols (GB/T 191-2008, ISO 780:1997, MOD)
GB/T 2423.1-2008 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test A Low Temperature (IEC60068-2-1:2007, IDT)
GB/T 2423.2-2008 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test B High Temperature (IEC60068-2-2:2007, IDT)
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