BAIJIAN - Third party testing organization
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、 measuring devices、 etc. in the power system. Equipment imported from abroad should be based on the product standards of the equipment and executed in accordance with this standard 2. 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 new versions of the following standards. GB 261-83 Determination of Flash Point of Petroleum Products GB 26483 Determination of Acid Value of Petroleum Products GB 311-83 Insulation Coordination and High Voltage Test Techniques for High Voltage Transmission and Transformation Equipment GB/T 507-86 Determination of Dielectric Strength of Insulating Oils GB/T 511-88 Determination of Mechanical Impurities in Petroleum Products and Additives GB1094.1-5-85 Power Transformers GB 2536-90 Transformer Oils GB5583-85 Partial Discharge Measurement of Transformers GB 5654-85 Relative Dielectric Constants of Liquid Insulating Materials at Power Frequency Measurement of dielectric loss factor and volume resistivity GB 6450-86 Dry type power transformers GB/T 6541-86 Petroleum products - Determination of interfacial tension between oil and water (circular ring method) GB 7252-8T Guidelines for analysis and judgment of dissolved gases in transformer oil GB 7328-87 Measurement of sound levels in transformers and reactors GB 7595-8T Quality standards for transformer oil in operation GB/T 7598-87 Turbine oil - Determination of water-soluble acids (colorimetric method) GB/T7599-87 Transformer oil during operation Method for determining the acid value of turbine oil (BTB method) G 7600-87 Method for determining the moisture content of transformer oil during operation (Coulomb method) GB 7601-87 Method for determining the moisture content of transformer oil during operation (Gas chromatography method) GB 9326.1-88 Oil paper insulated self contained oil filled cables and accessories for AC 330kV and below GB 11022-89 General technical conditions for high-voltage switchgear GB 11023-89 Guidelines for sulfur hexafluoride gas sealing test for high-voltage switchgear GB 11032-89 AC gapless metal oxide lightning arrester
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 problemsinspection 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