| 摘要 |
<p>PROBLEM TO BE SOLVED: To constitute a GIS, which has a trouble point indicator in a small size and at a low cost. SOLUTION: In a GIS 1 constituted of a plurality of units, a trouble point locating system is self-completed in one unit of the GIS or at one delivery unit composed of the plurality of units of GIS. The trouble point locating system is composed of an arc beam detection sensor 7, an optical fiber, a trouble point indicator (locating unit) 6. Hereby, the mounting/adjustment test of the optical fiber, etc., can be conducted at factory. Moreover, since the short optical fiber will do, an inexpensive optical fiber having large transmission loss can be used.</p> |
