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NEW STUDY HIGHLIGHTS FIELD PERFORMANCE OF VINTAGE CABLE

机译:新研究突出显示了老式电缆的现场性能

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摘要

A recent U.S. study on the field performance of early generation tree-retardant cross-linked polyethylene (TR-XLPE) medium voltage (MV) power cables has provided some critical insights for utilities across North America, particularly those assessing underground distribution strategies for the first half of the 21st century. In 1983, The Dow Chemical Company introduced HFDA-4202 NT EC as the first commercial TR-XLPE insulation specifically designed to retard water tree growth while retaining the excellent electrical and physical properties of XLPE. Over the last 20 years, HFDA-4202 NT EC and the more recently-introduced HFDB-4202 NT EC have become the leading MV cable insulation in the USA and Canada. Utilities began installing TR-XLPE in the mid-1980s, expecting improved performance based on increased reliability and greater longevity than standard XLPE cables or cables insulated with Ethylene Propylene Rubber (EPR). TR-XLPE is designed to resist water trees, which can be a significant cause of cable insulation degradation and affect the overall performance of the cable.
机译:美国最近对早期树状阻燃性交联聚乙烯(TR-XLPE)中压(MV)电力电缆的现场性能进行的研究为整个北美地区的公用事业提供了一些重要的见解,尤其是那些针对第一个评估地下分配策略的人。 21世纪下半叶。 1983年,陶氏化学公司推出HFDA-4202 NT EC,这是第一种商业化TR-XLPE绝缘材料,专门设计用于阻滞水树生长,同时保留XLPE的优异电性能和物理性能。在过去的20年中,HFDA-4202 NT EC和最近推出的HFDB-4202 NT EC已成为美国和加拿大领先的中压电缆绝缘层。公用事业公司在1980年代中期开始安装TR-XLPE,由于与标准XLPE电缆或用乙烯丙烯橡胶(EPR)绝缘的电缆相比,具有更高的可靠性和更长的使用寿命,因此有望提高性能。 TR-XLPE旨在抵抗水树,水树可能是导致电缆绝缘性能下降并影响电缆整体性能的重要原因。

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