| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an abnormality monitoring device which prevents a defect in the connection of power wiring by monitoring the state of a part where abnormal heat generation is caused owing to the defect in the connection, etc. SOLUTION: An optical fiber 11 which is thermally fused is provided nearby a connection part 25 of a power cable 26 and detection light is projected on this optical fiber 11 to judge whether or not the connection part of the power cable becomes abnormal from the photodetection state of the detection light.</p> |
