| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a thunderbolt resistant aerial ground wire which has the equivalent form, weight, and loosening property as the standard earth wire, and which is superior in thunderbolt resistance. <P>SOLUTION: This is constituted of a twisted wire part 13 comprised by twisting seven pieces of wires 12 in which a steel wire 10 is the core wire and in which an aluminum covered part 11 is installed at its outer periphery, and the twisted wire part 16 of the outermost layer comprised by twisting twelve pieces of the wires 15 in which the steel wire 10 is the core wire, in which the aluminum covered part 11 is installed at its outer periphery, and furthermore in which a ceramics coat layer 14 is installed at a surface. By installing layer thickness of the ceramics coat layer 14 within a range of 10 to 50μm, the thunderbolt resistance of a charge amount 200 C or more which is the supposed maximum value of a summertime thunderbolt having negative polarity is obtained. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
