This part of GB/T21413 specifies the general usage conditions and requirements for electrical equipment on the main circuit, auxiliary circuit control circuit, and indication circuit of rail transit rolling stock. Note: Some clauses in these rules, after consultation between the manufacturer and the user, may apply to equipment on other locomotives and vehicles (such as mining locomotives, trolleybuses, etc.). The purpose of this section is to standardize the common rules and requirements in the electrical equipment of locomotives and vehicles as much as possible, in order to achieve consistency in equipment requirements and testing, and thus avoid testing according to different standards. This section covers all requirements related to the expected environmental conditions, structure, performance, and corresponding general tests under normal usage conditions, as well as special fields that have received widespread attention and application, such as temperature rise and dielectric properties. When this section is inconsistent with certain requirements of relevant product standards, priority should be given to the requirements of the product standards. The following normative references are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document. GB/T 1402 Voltage of Traction Power Supply System for Rail Transit (GB/T 1402-2010.1EC 60850: 2007) MOD) GB/T2423.1 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test A: Low Temperature (GB/T2423.1-2008, IEC 60068-2-1:2007, IDT) GB/T 2423.2 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test B: High Temperature (GB/T 2423 2-2008, IEC 60068-2-2: 2007, IDT) GB/T 2423.3 Environmental Testing Part 2: Test Methods Test Cabs: Constant Damp Heat Test (GB/T 2423.3-2016, IEC 60068-278:2012, IDT) GB/T 2423.4 Environmental Testing for Electrical and Electronic Products Part 2: Test Methods Test Db Alternating Damp Heat (12h+12h Cycle) (GB/T 2423.4-2008) IEC 60068-230:2005, IDT)
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