| 摘要 |
<p>PURPOSE:To effectively detect an abnormal state of a coil equipment by reducing a distance between the primary coil and the secondary coil, mounting a thermal protector on the exposed surface of the primary coil, and rapidly transmitting the abnormal heat occurred at one coil to the other coil. CONSTITUTION:The thickness of an inner laminated core 1 is sufficiently increased thicker than the width of the core 1 to secure a magnetic path area, and the length of the core 1 is reduced. The primary coil 4 is wound approximately at the center of the core 1. The secondary coils 6, 6 are so wound on the core 1 as to interpose the coil 4 at both sides of the coils 6, 6. A thermal protector 7 is mounted on the exposed surface of the coil 4 between a power source end of the coil 4. The thermal protector 7 serves to detect the abnormal temperature rise of the coil 4 to the coils 6 and to stop the energization of the coil.</p> |
