This standard specifies the types, rated parameters, technical requirements, test methods, and inspection rules of power line carrier transceivers for relay protection. This standard is applicable to special power line carrier transceivers for relay protection in 110kV and above neutral point directly grounded systems, and can serve as the basis for the development, production, inspection, and acceptance of such products. 2 Normative References: The clauses in the following documents become clauses of this standard through reference in this standard. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB/T 2423.1 Environmental Testing for Electrical and Electronic Products Part 2- Test Methods: Test A: Low Temperature GB/T 2423.2 Environmental Testing for Electrical and Electronic Products Part 2: Test B: High Temperature GB/T 2423.9 Environmental Testing for Electrical and Electronic Products Part 2: Test Methods, Test Cb: Constant Damp Heat for Equipment GB/T 2887-2000 General Specification for Electronic Computer Sites GB/T 7261-2000 Basic Test Methods for Relays and Devices GB/T 9361-1988 Calculation Station Sites Safety Requirements GB/T 11287-2000 Electrical Relays - Part 21: Measurement Relays and Protection Devices - Vibration, Shock Collision and seismic testing - Part 1: Vibration testing (sinusoidal) (idt IEC 60255-21:1988) GB/T 14537-1993 Impact and collision testing for measuring relays and protective devices (idt IEC 60255-21:1988) GB/T 14598.9-1995 Electrical relays - Part 2: Electrical interference testing for measuring relays and protective devices - Part 3: Radiated electromagnetic field interference testing (idt IEC 60255-22-3:1989) GB/T 14598.10-1996 Electrical Relays - Part 22: Electrical Interference Testing for Measurement Relays and Protection Devices - Part 4: Fast Transient Interference Testing (idt IEC 60255-22-4:1982) GB/T 14598.13-1998 Electrical Interference Testing for Measurement Relays and Protection Devices - Part 1: 1MHz Pulse Group Interference Testing (eqv IEC 60255-22-1:1988)
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