The invention discloses a method for testing cable main insulator water tree phenomenon initial points.
本发明公开了一种电缆主绝缘体水树现象起始点的测试方法。
After grounding, polarization charges and shallow charges will be released. The space charges still existing in water tree are called residual charge.
接地放电后，极化电荷及表层电荷释放，仍存在水树枝内的空间电荷即为残留电荷；
Research methods: in this paper, an accurate water tree model has been created. We have successfully developed a new hot-line diagnostic method called "high frequency superposition method".
研究方法：建立了水树精确数字仿真模型，提出一种新的在线绝缘诊断方法：高频信号叠加法。
This paper introduces water tree aging theory of XLPE cables and insulated characteristic of water tree aged XLPE cables. Temperature of XLPE cable joint and relation with water tree are analyzed.
本文介绍了交联聚乙烯电力电缆的水树老化机理及含水树电缆的绝缘特性，并分析了交联聚乙烯电缆连接头中温度指标重要性及其与水树的关系。
Water tree may be formed in the insulation due to physicochemical changes caused by the combined effect of water and intense electrical field.
电缆运行过程中，在水分和电场的共同作用下发生物理化学变化，形成水树枝。
Water, tree and light, fill the space with an aura of serenity.
水、树和光线使空间充满宁静的气氛。
The significance of the study on water-tree-retardant MV power cables and cable compounds is discussed.
阐述了研究抗水树中压电力电缆及材料的现实意义；
The method of the test to assess the water-tree-retardancy of cable and compound is presented as are some test results.
介绍了电缆和材料抗水树性能评价试验方法及一些结果。
Its ability to distinguish more than 170 odours in the wild is vital for smelling nectar, pollen, water, tree resin and pheromones.
它能在野外辨别170多种气味。这种能力对闻花蜜、花粉、水、树脂和信息素的至关重要。
Its ability to distinguish more than 170 odours in the wild is vital for smelling nectar, pollen, water, tree resin and pheromones.
它能在野外辨别170多种气味。这种能力对闻花蜜、花粉、水、树脂和信息素的至关重要。
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