Scope
This standard specifies the items, cycles, and requirements for preventive testing of various power equipment to determine whether the equipment meets operating conditions, prevent equipment damage, and ensure safe operation This standard is applicable to AC power equipment of 500kV and below This standard is not applicable to high-voltage direct current transmission equipment, mining and other power equipment used under special conditions, nor does it apply to electrical equipment and safety equipment such as relay protection devices, automatic devices, measurement devices, etc. in the power system Equipment imported from abroad should be based on the product standard of the equipment and executed in accordance with this standard
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 this 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 261-83 Method for Determination of Flash Point of Petroleum Products
GB 264-83 Method for Determination of Acid Value of Petroleum Products
GB 311-83 Insulation Coordination of High Voltage Transmission and Transformation Equipment
GB/T 507-86 Method for Determination of Dielectric Strength of Insulating Oils
GB/T 511-88 Method for Determination of Mechanical Impurities in Petroleum Products and Additives
GB 1094.1-5-85 Power TransformersGB 2536-90 Transformer oil
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