This standard specifies the structure, dimensions, and testing requirements for extruded insulated power cables with rated voltages ranging from 1 kV to 3 kV for fixed installation in distribution networks or industrial installations. This standard does not include cables installed and used under special conditions, such as overhead cables, mining cables, nuclear power plant cables (used in polluted areas), submarine cables, or marine cables. 2. The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. At the time of publication of this standard, all versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB 156-1993 Standard Voltage (neq IEC 60038:1983) GB/T2951.1-1997 General Test Methods for Cable Insulation and Sheath Materials - Part I: General Test Methods - Section I: Measurement of Thickness and Boundary Dimensions - Mechanical Properties Test (idt IEC 60811-1-1:1993) GB/T2951.2-1997 General Test Methods for Cable Insulation and Sheath Materials - Part 1: General Test Methods - Section 2: Thermal Aging Test Method (idt IEC 60811-1-2:1985) GB/T2951.3-1997 General Test Methods for Cable Insulation and Sheath Materials - Part 1: General Test Methods - Section 3: Density Determination Method - Water Absorption Test - Shrinkage Test (idt IEC 60811-1-3:1993) GB/T2951.4-1997 General Test Methods for Cable Insulation and Sheath Materials - Part 1: General Test Methods - Section 4: Low Temperature Test (idt IEC 60811-1-4:1985) GB/T2951.6-1997 General Test Methods for Cable Insulation and Sheath Materials - Part 2: Special Test Methods for Elastomer Mixtures - Section 1: Ozone Resistance Test - Hot Elongation Test - Immersion in Mineral Oil Test (idt IEC60811-2-1: 1986) GB/T2951.5-1997 General Test Methods for Cable Insulation and Sheath Materials - Part 3: Special Test Methods for PVC Mixtures - Section 1: High Temperature Pressure Test - Resistance to Cracking Test (idt IEC 60811-3-1: 1985) GB/T2951.7-1997 General Test Methods for Insulation and Sheath Materials of Electric Cables - Part 3: Specific Test Methods for Polyvinyl Chloride Mixtures - Section 2: Weight Loss Test - Thermal Stability Test (idt IEC 60811-3-2: 1985) GB/T 2951.8-1997 General Test Methods for Cable Insulation and Sheath Materials - Part 4: Specific Test Methods for Polyethylene and Polypropylene Mixtures - Section 1: Environmental Stress Cracking Resistance Test - Winding Test after Air Thermal Aging - Method for Measuring Melt Index - Method for Measuring Carbon Black and/or Mineral Filler Content in Polyethylene (idt IEC 60811-4-1:1985)
Function of testing report:
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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
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4. Free initial testing, with no testing fees charged
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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