Scope
This standard specifies the classification, technical requirements, test methods, inspection rules, markings, user manuals, packaging, transportation, and storage of automatic synchronization devices used in power systems This standard is applicable to constant lead time type automatic quasi synchronous devices (hereinafter referred to as devices), which are used in the secondary circuit of the power system to automatically operate in parallel between systems or between systems and generators (hereinafter referred to as operating systems and standby systems) according to the requirements of the standard steps This standard also applies to devices without frequency and voltage regulation functions. This standard applies to new devices
Reference Standards
The provisions contained in the following standards constitute the provisions of this standard by reference in this standard.
. At the time of publication of the standard, all versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standardsGB/T 1.3-1997 Guidelines for Standardization Work Unit 1: Rules for Drafting and Expressing Standards Part 3: Regulations for Writing Product Standards
GB/T 2423.4-1993 Basic Environmental Testing Procedures for Electrical and Electronic Products Test Db: Alternating Damp Heat Test Method (eqv IEC 60068-2-30:1980)
GB/T 2900.1-1992 Electrical Terminology and Basic Terminology
GB/T 2900.17-1994 Electrical Terminology Electrical Relays
GB/T 2900.49-1994 Electrical Terminology Power System Protection
GB/T 7261-1987 Basic Test Methods for Relays and Relay Protection Devices
GB/T 8367-1987 Measurement of Interruptions and AC Components (Ripples) of DC Auxiliary Excitation in Relays
GB/T 14537-1993 Impact and Collision Tests for Measuring Relays (idt IEC 60255-21-2:1988)
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