Aerial insulated cables are common high-altitude transmission lines in power grid construction. Due to its excellent mechanical, physical, and electrical properties, as well as excellent resistance to electrical traces, surface discharge, and atmospheric conditions, aerial insulated cables have the advantages of smaller laying gaps, saving line corridors, and reducing line voltage compared to individual wires. Therefore, they are widely used in power supply projects such as urban streets, buildings, and green projects, especially in rural and mountainous areas In forest areas, overhead insulated electric winding is generally used as the main transmission line
Recommended inspection items for overhead insulated cables
1. Conventional inspection items: structural size, conductor, insulation thickness, outer diameter of electric gas, cable breaking force, delivery length, etc 2. Testing items for physical and mechanical properties: thermal weight loss, cracking resistance, high-temperature pressure, low-temperature winding, low-temperature stretching, low-temperature impact, water absorption test, voltage method, weight method, shrinkage test, thermal elongation, melt index, etc 3. Electrical performance testing items: volume resistivity, dielectric strength, dielectric loss factor, conductor DC resistance test, insulation resistance test, AC resistance test, partial discharge test, etc 4. Aging resistance: artificial climate aging resistance test, air aging mechanical performance test, etc
5. Determination of combustion performance
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