CEMIG, the Power Company of Minas Gerais State, Brazil, decided to apply just aerial spacer cable system in its urban distribution lines, aiming at reducing operational costs and increasing reliability. The low outage level in such a system is a result of an appropriate design of line joined to the application of materials and equipment of high technology. Since the electrical connections are one of the most critical points, the wedge connector for spacer cable lines was specified. Considering the design concept of CEMIG's spacer cable system that it should not present noninsulated points, susceptible to cause outage, it was also decided that the connectors might present a protective cover, compatible with the polymeric material of covered conductor. Therefore, CEMIG and AMP do Brasil, a manufacturer of electrical and electronic connectors, promoted a partnership to develop a connection system to be applied in medium voltage overhead covered cables. This paper describes the development of the connector-cover concept, the cost analysis, the involved laboratory tests and the results of the first applications performed on the lines, in field conditions.
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机译:巴西米纳斯吉拉斯州电力公司CEMIG决定在其城市配电线路中仅使用架空间隔电缆系统,旨在降低运营成本并提高可靠性。在这样的系统中,低停机水平是由于对生产线进行了适当的设计,并结合了高科技材料和设备的应用。由于电气连接是最关键的点之一,因此指定了用于间隔电缆线的楔形连接器。考虑到CEMIG间隔电缆系统的设计概念,即不应出现非绝缘点,容易引起中断,因此还决定,连接器应具有与被覆导体的聚合材料兼容的保护层。因此,CEMIG与电气和电子连接器制造商AMP do Brasil促进了合作关系,以开发一种连接系统,该系统可用于中压架空覆盖电缆。本文介绍了连接器盖概念的发展,成本分析,所涉及的实验室测试以及现场条件下在生产线上首次应用的结果。
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