| 摘要 |
<p>PURPOSE:To prevent the overcurrent due to the jump-over of a notch, by detecting the jump-over and breaking a circuit. CONSTITUTION:If a notch N2 is jumped over, a notch jump-over detection contact 17 is closed. Since, there is no proceeding instruction or intermediate feed instruction at that time, a proceeding breaker 14 remains de-energized. Therefore, a notch jump-over circuit is closed and an output 200 is transmitted to break a circuit to protect it.</p> |
