This part of the scope GB/T 12972 specifies the types, technical requirements, test methods, and inspection rules of reinforced flexible cables for shield monitoring of coal mining machines with rated voltage of 0.66/1.14 kV. This section is applicable to copper core rubber insulated rubber sheathed shielding and monitoring reinforced flexible cables for rated voltage 0.66/1.14 kV coal mining machines and similar equipment. This part should be used in conjunction with GB/T 12972.1-2008. The clauses in the following documents are referred to as clauses in this part of GB/T 12972 through normative references. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions do not apply to this section. However, parties to agreements based on this section are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this section. GB/T 2951.11-2008 General Test Methods for Insulation and Sheath Materials of Electric and Optical Cables - Part 11: General Test Methods - Measurement of Thickness and Boundary Dimensions - Mechanical Performance Testing (IEC 60811-1-1:2001, IDT) GB/T 2951.12-2008 General Test Methods for Insulation and Sheath Materials of Electric and Optical Cables: Part 12: General Test Methods - Thermal Aging Test Method (IEC 60811-1:2:1985, IDT) GB/T 2951.21-2008 General Test Methods for Insulation and Sheath Materials of Electric and Optical Cables: Part 21: Specific Test Methods for Elastomer Mixtures - Ozone Resistance Test - Hot Elongation Test - Mineral Oil Immersion Test (IEC 60811-2-1:2001, IDT) GB/T 3048.4-2007 Electrical Performance Test Methods for Cables and Cables - Part 4: Conductor DC Resistance Test GB/T 3048.5-2007 Electrical Performance Test Methods for Cables and Cables - Part 5: Insulation Resistance Test GB/T 3048.8-2007 Electrical Performance Test Methods for Electric Wires and Cables: Part 8: AC Voltage Test (IEC 60060-1:1989, NEQ) GB/T 4909.2-1985 Test Methods for Bare Wires - Measurement of Dimensions (neq IEC 60251:1978) GB/T 6995.1-2008 Identification and Marking Methods for Electric Wires and Cables - Part 1: General Provisions GB/T 7594.10-1987 Rubber Insulation and Sheath of Electric Wires and Cables - Part 10: 90 ℃ General Heavy Duty Flammable Rubber Sheath (neqIEC 60245) GB/T 12972.1-2008 Rubber Sheath Flexible Cables for Mining Purposes - Part 1: General Provisions GB/T 18380.1-2001 Flame Testing of Electric Cables under Flame Conditions - Part 1: Vertical Burning Test Method for Single Insulated Wire or Cable (idt IEC 60332-1:1993)
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