1. Scope of Application
This standard specifies the product codes and representation methods, cable names and model specifications, finished cable labels and insulation core identification, technical requirements, test methods and inspection rules, usage characteristics, and packaging of extruded polyvinyl chloride and cross-linked polyethylene insulation, polyvinyl chloride, polyethylene, and halogen-free polyolefin sheathed control cables with AC rated voltage Uo/U of 450/750V. This standard is applicable to AC rated voltage U/ U is a control cable used for fixed installation in control, monitoring circuits, and protection circuits of 450/750V and below. 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 Cables and Optical Fibers - Part 11: General Test Methods - Measurement of Thickness and Boundary Dimensions - Mechanical Performance Tests GB/T 2951.12-2008 General Test Methods for Insulation and Sheath Materials of Cables and Optical Fibers - Part 12: General Test Methods - Thermal Aging Test Method - GB/T 2951.13-2008 General Test Methods for Insulation and Sheath Materials of Cables and Optical Fibers - Part 1 Part 3: General Test Method - Density Determination Method - Water Absorption Test - Shrinkage Test 3 No Identification Results GB/T 2951.14-2008 General Test Methods for Insulation and Sheath Materials of Electric and Optical Cables Part 14: General Test Method - Low Temperature Test GB/T 2951.21-2008 General Test Methods for Insulation and Sheath Materials of Electric and Optical Cables Part 21: Special Test Method for Elastomer Mixtures - Ozone Resistance Test - Hot Elongation Test - Mineral Oil Immersion Test GB/T 2 951.31-2008 General test methods for insulation and sheath materials of cables and optical cables Part 31: Special test methods for polyvinyl chloride mixtures - High temperature pressure test - Resistance to cracking test GB/T 2951.32-2008 General test methods for insulation and sheath materials of cables and optical cables Part 32: Special test methods for polyvinyl chloride mixtures - Weight loss test - Thermal stability test GB/T 2951.41-2008 General test methods for insulation and sheath materials of cables and optical cables Part 41: Specific test methods for polyethylene and polypropylene mixtures - Environmental stress cracking resistance test - Melt index measurement method - Continuous combustion method for measuring carbon black and/or mineral filler content in polyethylene - Thermogravimetric analysis method (TGA) Measurement of Carbon Black Content - Microscopic Evaluation of Carbon Black Dispersion in Polyethylene GB/T 3048.4-2007 Test Methods for Electrical Properties of Electric Wires and Cables - Part 4: Conductor DC Resistance Test GB/T 3048.5-2007 Test Methods for Electrical Properties of Electric Wires and Cables - Part 5: Insulation Resistance Test GB/T 3048.8-2007 Test Methods for Electrical Properties of Electric Wires and Cables - Part 8: AC Voltage Test GB/T 3048.9-2007 Test Methods for Electrical Properties of Electric Wires and Cables - Part 9: Spark Test on Insulated Wires GB/T 3048.10-2007 Test Methods for Electrical Properties of Electric Wires and Cables - Part 10: Extruded Sheath Spark Test
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