| 摘要 |
<p>The overvoltage protective apparatus has a fixed-position electrode 5 and a moving electrode 4 which is kept at a distance from the fixed-position electrode 5 by a non- conductive sleeve 9. A magnetic release 3 is provided in series with the fixed-position and moving electrodes 4, 5 and moves the moving electrode 4 away from the fixed- position electrode 5 if an arc is struck between the electrodes 4, 5. A spring 19 presses the moving electrode 4 against the sleeve 9 and the fixed-position electrode 5. <IMAGE></p> |
