<p>The present invention relates to a low voltage contactor (1) for connecting and disconnecting a three-phase load (2) to an electric power including a coil (16), main contacts (12) operated by the coil (10) and an electronic control circuit (20) for controlling voltage supplied to the coil. The electronic control circuit includes a pre-arranged time point selection scheme (22) and is further adapted to select a time point from the pre-arranged time point selection scheme (22) as a time delay, and initiate an instant opening command based on the selected time point.</p>
申请公布号
WO2013178255(A1)
申请公布日期
2013.12.05
申请号
WO2012EP60123
申请日期
2012.05.30
申请人
ABB RESEARCH LTD;JOHANSSON, GUNNAR;JOHANSSON, MATS;JOHANSSON, ERIK