江蘇春晨電纜有限公司：http://m.liuyangwu.com/st82365/
江蘇春晨電纜有限公司專業(yè)生產(chǎn)YCBP扁電纜，屏蔽橡套扁電纜，電纜特性：YCBP扁電纜電纜的*工作溫度應(yīng)不超過105℃可彎曲性、耐高溫、耐低溫、耐油、耐酸堿、耐潮濕阻燃性：通過GB/T 18380-2008不延燃試驗(yàn)，
The influence of non homogeneity of cross linked polyethylene material on the aging of water branch of medium
It is well known that the electric field in the electric cable structure is a cylindrical uniform electric field. However, because of the power cable manufacturing process control deviation, often makes the cable conductor can not accuray in the center position. With the improvement of manufacturing technology, cable medium inhomogeneity (eccentricity) can be controlled within 5%, the conductor away from the center position is relatively small, the uniformity of the electric field effect can be ignored. On the contrary, if the cable medium inhomogeneity (eccentricity) is greater than 8%, the distribution of the electric field distortion of cable medium cannot be ignored, at this time, once the media in the presence of impurities or other defects (such as mechanical injury), power cable insulation performance will decline sharply. In the presence of moisture and impurities, will lead to a large number of water tree the resulting medium branches early degradation; when the medium local defects caused by partial discharge in the distortion of the electric field, the media will inevitably form the electrical tree aging and breakdown.
Although the XLPE national standard and IEC standard of 35kV and the voltage level of the power cable insulation inhomogeneity (eccentricity) requirements are not very high, however, the theory and test again to give us a warning: the power cable uniformity caused by power cable dielectric insulation can damage, but not in the short term, once the XLPE medium in the presence of impurity or external moisture diffusion migration into the medium, the safe operation of power cable life will be a great threat.
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