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Qiaopu assess the quality of the power cord attachment
2011-11-02 22:42:07
 

Qiaopu assess the quality of the power cord attachment

Ningbo Qiaopu Electric Co., Ltd. is specialized in manufacturing power cord, power cable accessories judge the quality factor is diverse, in principle, for the following areas:
(1) power cord mechanical properties. Terminal should have sufficient bending, shock-proof ability. Joints should be able to withstand a certain degree of tension and measures to prevent external damage.
(2) power cord sealing performance. Sealed moisture resistant power cord attachment directly affect the electrical performance and service life. End of the sealing structure is reliable and stable. In general, the middle connector should also be a match proof metal housing, especially buried or used in wet conditions.
(3) power line electrical performance. Electrical performance is judged good or bad quality of the first principles of cable accessories. Main power cable accessories to consider the electric field distribution is reasonable, measures to improve the electric field distribution is appropriate, the electrical strength of materials, dielectric loss and margin products such as insulation.
At the same time, must also consider the stability of electrical properties, including the power cord attachment of materials chemistry, physical properties and structure stability, control of material properties such as stability of the stress, the stress cone is easily deformed, the power cord insulation on the power cord retraction attachment of the electric field distribution and the impact of preventive measures, combined with a variety of materials compatibility, combined with the interfacial properties of stability.
In addition, consideration should be given the power cord attachment of thermal properties such as dielectric loss, conductor connected to the contact resistance and stability, the release of heat conduction, thermal expansion and contraction of various parts of electrical and mechanical properties of impact.
(4) power cord manufacturer (Ningbo Qiaopu Electric Co., Ltd.) quality assurance system. Prefabricated power cable accessories factory, the factory supplied rubber precast, prefabricated stress cone, porcelain, shell, dipping agent components, on-site installation and then assembled into a whole terminal or connector, so that each component manufacturing quality and the installation process and product quality are directly related to the final quality. The quality assurance program should include at least the following:
l) Ningbo Qiaopu Electric Co., Ltd. factory, should be strictly on the power cord attachment key components (for example, rubber stress cone, GIS epoxy casing, impregnating agents, the middle joints of prefabricated parts, etc.) for factory test. Double-check the reliability of test and measurement equipment, test methods are effective, whether the testing personnel trained and test records are complete;
2) Ningbo Qiaopu Electric Co. Ltd. sent the installation and construction staff have been trained and have sufficient construction experience;
3) power cord manufacturer of coordination between different departments is good;
4) Ningbo Qiaopu Electric Co.,Ltd. in the past sales and operating records.
5) Power line process performance. Process performance is the power line design and selection of accessories is an important condition, the installation process should be simple, easy on-site construction, short construction period; on-site environmental requirements and the technical level of workers ask for much; easy installation quality control, quality and reliability .


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