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介绍了德国和法国在开发电线电缆用低烟无卤阻燃材料的新进展。其中包括:符合德国绝缘标准VDE0207.24的材料;提高了柔软性的无卤低烟热塑材料;符合法国标准CNET CM26的耐外紫外线材料;高产量的材料品种。 相似文献
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新开发的导电聚氯乙烯复合物,与现有销售的碳黑填充导电聚氯乙烯复合物相比,除具有相似的导电性以外,而且具有低的粘度、易于加工等特性。 相似文献
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新开发的导电聚氯乙烯复合物,与现有销售的碳黑填充导电聚氯乙烯复合物相比,除具有相似的导电性以外,而且具有低的粘度、易于加工等特性。 相似文献
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电线电缆产品的发展过程实质上是材料的更新换代过程。电线电缆用途广泛,不同使用场合对其性能要求差异很大。大部分电缆的绝缘,除必须有较高的绝缘电阻、耐电压强度或低的介电损耗外,还必须兼顾良好的物理机械性能,如抗拉、抗弯曲、抗振动、抗扭等;护 相似文献
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本文主要介绍电线电缆的分类、电气控制系统常用聚氯乙烯电线电缆、环保型电线电缆的型号命名规则,环保型电线电缆的低烟、无卤、阻燃、环保、交联、薄壁等特点。 相似文献
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In a power transmission cable system, the uniformly configuration of the cables between sections is sometimes difficult to achieve because of the geometrical limitation. This will cause the increase of sheath circulating current which results in the increase of sheath loss and the decrease of permissible current of the power transmission system. While the cable is on operation, because of cable aging and other unexpected reasons, sheath fault always occurs which leads to the further damage of the insulation layer and the life of the cable. These two problems were particularly addressed in this paper. Over last few years, two research groups in South Korea and the United Kingston have worked together extensively to solve these problems and made some great achievements. For tackling the problem of the increase of sheath circulating current, one special device was designed to measure this kind of current; an effective measure was proposed to reduce the current and the new measure was well protected from any further threats like cable fault and lightning. Regarding the problem with sheath fault, one data acquisition system was designed to monitor the sheath fault on field; a new fault phenomenon was discovered for the cable buried in sand; based on the new discovery, the fault was characterised, modelled and simulated; furthermore advanced signal processing techniques were introduced to extract the fault signals from the sheath, detect and locate the fault. These new solutions have either been successfully applied in practical operation of the power cable system or used in further research to propose more advanced solutions. The paper reviewed the latest developments of these new solutions. 相似文献
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油矿用的承荷探测电缆的应用和生产 总被引:1,自引:1,他引:0
本文介绍了我国油矿用的承荷探测电缆的生产和应用的发展史 ,提出了该产品使用特点及要求。介绍了产品的结构、材料 ,以及制造工艺的特点。最后 ,提出了对于开发西部石油 ,本产品具有较高的经济效益 相似文献
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电线电缆的热稳定性试验主要是对正常运行温度较高的电缆产品绝缘或护套材料在高温情况下的化学稳定性能进行考核,如60227IEC07( BV-90)和60227IEC08(RV-90)等类似产品.从GB/T 2951.32-2008标准入手,通过试验,总结了试验过程中发现的一些问题,并提出改进试验方案的建议,对于如何评价试验的准确性提供了有价值的借鉴. 相似文献
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介绍长途对称通信电缆中绝缘单线加工工艺参数的计算。根据长途对称通信电缆工作电容标准值 ,可分别计算出绝缘单线的外径和同轴电容 ,并可计算出挤出机出胶量 ,以及氮气的注入量。另外 ,对挤出温度设置和模具设计等也进行了讨论 相似文献
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介绍了交联乙烯-四氟乙烯(XETFE)绝缘电线电缆的结构、性能及产品技术现状,对产品标准、材料及制造工艺等进行分析和探讨,使电缆用户对该产品有进一步的认识.国产电缆目前已能满足使用要求,完全可替代同类进口产品. 相似文献
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本文对网络布线用的六类数据电缆产品的结构设计、生产工艺控制、电气性能及应用前景等方面进行了阐述。 相似文献