1 Scope
This standard specifies the product classification, technical requirements, test methods, inspection rules, markings, user manuals, packaging, transportation, and storage of generator reverse power protection devices and reverse power relays This standard applies to generator reverse power protection devices and reverse power relays (hereinafter referred to as "products") This type of product is used to protect the steam turbine generator set. Due to reasons such as the closure of the main steam valve of the steam turbine, the fault is removed during reverse power operation of the generator, ensuring the safe operation of the steam turbine generator set.
This standard is only applicable to new products.
2 Reference Standards
The provisions contained in the following standards are incorporated into 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 standards
GB/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 2423,3--1993 Environmental Testing Procedures for Electrical and Electronic Products - Test Ca: Constant Damp Heat Test Method GB/T 2900.1-1992 Basic Terminology of Electrical Terminology
GB/T 2900.17~--1994 Electrical Terminology - Electrical Relays GB/T 2900.49--1994 Electrical Terminology - Power System Protection
GB/T 14598,13-1998 Electrical Interference Testing of Measuring Relays and Protection Devices
3 Definitions
The definitions of general terms used in this standard are in accordance with the provisions of GB/T 2900.1, GB/T 2900,17, and GB/T 2900.49
4 Product Classification
4.1 Types and Classification
a) According to the principle of Gouwei:
Electromechanical type, rectifier type, and static type; b) Classified by installation method:
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