Scope
This standard specifies the requirements, test methods, inspection rules, and markings for general electrical equipment used in mining (hereinafter referred to as equipment) This standard is applicable to the manufacturing and inspection of electrical equipment used in coal mine gas free, coal dust explosion hazardous areas, and other similar underground industrial production departments such as non coal mines This standard does not apply to cables and wires
Normative References
The clauses in the following documents become clauses of this standard through reference in this standard.
. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standardGB 1984-2003 High Voltage AC Circuit Breakers (IEC 62271-100:2001, MOD)
GB/T 2423.4-1993 Basic Environmental Testing Regulations and Test Db for Electrical and Electronic Products; Alternating Damp Heat Test Method (eqv IEC 60068-2-30: 1980)
GB 3836.1-2000 Electrical Equipment for Explosive Gas Atmospheres - Part 1: General Requirements (eqv IEC 60079-01998) GB
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