| 摘要 |
<p>PURPOSE:To assure release of voltage to improve disaster preventing function when a fault occurs by binding not so tight the entire part with the internal diameter side overlapped and external diameter side formed with an interval at the time of placing the back-split type short pipe having the same radius of curvature as the power cable in contact with a plurality of the cables. CONSTITUTION:Back-split short pipes P1 to P4 are formed with flame-retardant FRP in almost the same curvature of radius as the power cable 1. The back- split short pipes p1 to p4 are vertically loaded along the longitudinal direction of the power cable 1 and the end portions of the adjacent short pipes are overlapped with each other at the inside of the curvature of the cable 1 and form a clearance 1 at the external side. Therefore, the back-split short pipes are formed in the same diameter in every other line and the one has the diameter different from that the other in such a degree as overlapping on the other in the adjacent pipes. After the adjacent back-split short pipes p1 to p4 are coupled with coupling bands T1 to T4, the external circumference of the entire part is loosely bound. Thereby, a voltage is smoothly released when a fault occurs and spread of disaster can surely be prevented.</p> |
