| 摘要 |
<p>FIELD: electricity. ^ SUBSTANCE: for control purpose two cam switches are provided, which actuate from cam disc mechanically connected to Maltese wheel and thus to contact-bearing switching shaft of switch. Cam disc has horizontally separate circuit on its end surface, besides one of both cam switches rolls along each part of circuit. ^ EFFECT: detection of failure in Maltese gear for driving switching shaft, simplified design and alignment of switch, and increase of its affordability. ^ 8 cl, 4 dwg</p> |
