This standard specifies the types, technical parameters, structural performance, test methods, design, manufacturing, packaging and transportation methods, installation and operation requirements of metal enclosed busbars. This standard applies to metal enclosed busbars with a voltage of 35 kV and below, a current of 40000 A and below, and a frequency of 50 Hz (or 60 Hz). Metal enclosed busbar is mainly used for generator outgoing lines and other power transmission and distribution circuits to safely transmit electrical energy. This standard does not apply to bus ducts. 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 the latest versions of the following standards. GB156-1993 Standard Voltage (neq IEC 38; 1983) GB 311.1-1997 Insulation Coordination of High Voltage Transmission and Transformation Equipment (neq IEC 71-1; 1993) GB/T 762-1996 Standard Current (eqv IEC 59; 1938) GB/T 763-1990 Heating of AC High Voltage Electrical Appliances during Long Term Operation GB/T 2706-1989 Dynamic Thermal Stability Test Methods for AC High Voltage Electrical Appliances (neq IEC 694; 1984) GB/T 2900.19-1994 Electrotechnical Terminology High Voltage Switch Equipment (neq 1EC 50) GB/T 3190-1996 Chemical Composition of Wrought Aluminum and Aluminum Alloys (neq IsO 209-1) GB 4208-1993 Degrees of Protection Provided by Enclosures (IP Code) (eqv 1EC 529:1989) GB/T 5231-1985 Processed Copper - Chemical Composition and Product Shape GB/T 11021-1989 Evaluation and Classification of Heat Resistance of Electrical Insulation (eqv lEC 85; 1984) GB/T 14048.1-1993 General Principles for Low Voltage Switchgear and Control Equipment (eqv lEC 947-1; 1988) GB/T 16927.1-1997 High Voltage Testing Techniques, Part 1: General Test Requirements (eqv IEC 60-1:1989) GB/T 16927.2-1997 High Voltage Testing Techniques, Part 2: Measurement Systems (eqv IEC 60-2; 1994) GB 50150-1991 Electrical Equipment Installation Engineering Electrical Equipment Handover Test Standard GB 50260-1996 Code for Seismic Design of Power Facilities
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