Scope
This standard specifies the specifications, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage of explosion-proof plug connectors for coal mine battery electric locomotives This standard is applicable to explosion-proof pin connectors (hereinafter referred to as products) for coal mine battery electric locomotives with gas or coal dust explosion hazards
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 the standard, all versions shown are valid and all standards will be revised. Parties using this standard should explore the possibility of using the latest versions of the following standardsGB/T 2421-89 Basic Environmental Testing Regulations for Electrical and Electronic Products
GB/T 2423.4-1993 Basic Environmental Testing Regulations for Electrical and Electronic Products Test Db: Alternating Damp Heat Test Method (eqv IEC68-2-30:1980)
GB 3836.1-83 General Requirements for Explosion proof Electrical Equipment for Explosive Atmospheres
GB 3836.2-83 Explosion proof Electrical Equipment for Explosive Atmospheres "d" (neq IEC79-1)
GB 3836.3-83 Explosion proof Electrical Equipment for Explosive Atmospheres - Increased Safety Electrical Equipment "e"
GB/T 4207-84 Solid Insulation Materials - Determination of Leakage Traceability Index and Leakage Traceability Index under Wet Conditions (neq IEC112:1979)
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