This standard specifies the usage characteristics, cable model, specifications, structure, product representation methods, technical requirements, test conditions, routine tests, sampling tests, electrical type tests, non electrical type tests, cable identification marks, acceptance rules, cable packaging, transportation, and storage of rubber insulated flexible cables (hereinafter referred to as cables) with rated voltages of 6kV to 15kV in the distribution network of shield tunneling machine systems. This standard applies to rubber insulated flexible cables for the connection of power supply in shield tunneling machines or similar equipment systems with rated voltages ranging from 6kV to 15kV. 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 modification orders) applies to this document. GB/T 2900.10 Electrotechnical Terminology - Cables - 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 Overall Dimensions - Mechanical Performance Tests - 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 Methods - GB/T 2951.14-2008 General Test Methods for Insulation and Sheath Materials of Electric and Optical Cables - Part 14: General Test Methods Low temperature test GB/T 2951.21-2008 General test methods for insulation and sheath materials of electric and optical cables - Part 21: Specific test methods for elastomeric mixtures - Ozone resistance test, hot elongation test, mineral oil immersion test - General test methods for insulation and sheath materials of electric and optical cables - Part 31: Special test methods for polyvinyl chloride mixtures - High temperature pressure test, resistance to cracking test - GB/T 3048.4-2007 Electrical performance test methods for electric wires and cables - Part 4: Conductor DC Resistance Test GB/T 3048.5-2007 Electrical Performance Test Methods for Electric Wires 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 GB/T 3048.12-2007 Electrical Performance Test for Electric Wires and Cables Part 12: Partial Discharge Test GB/T 3048.13-2007 Electrical Performance Test Methods for Electric Wires and Cables Part 13: Impulse Voltage Test GB/T 3956-2008 Conductors for Electric Cables GB/T 4909.2-2009 Bare Wires Test Method Part 2: Dimensional Measurement GB/T 4910-2009 Tinned Round Copper Wire
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