| 摘要 |
<p>The table has a circuit arrangement comprising a self-locking circuit (17) switched between a phasing line (15) and a zero line (16) for self-locking of an ON-position of a setting and/or retracting device (11). The circuit is connected with a switching contact (14) in a machine connected manner, and comprises a current sensor (18) on the phasing line and/or zero line. The circuit is designed in such a manner that self-locking of the ON-position does not take place or ends, if load current on the phasing line and/or the zero line falls below or above a preset value, respectively.</p> |
