公开(公告)号：US07522400B2

公开(公告)日：2009-04-21

申请号：US11001573

申请日：2004-11-30

申请人： Tim M. Laurent ,  Mark A. Johnson ,  Thomas W. Degenhart

发明人： Tim M. Laurent ,  Mark A. Johnson ,  Thomas W. Degenhart

IPC分类号： H01H47/14

CPC分类号： H01H47/002 ,  H01H2047/003

摘要： A method of detecting and attempting to correct a relay tack weld failure of its contacts is presented. This method senses the failure of a relay's contacts to open once it has been commanded to trip. This sensing may directly sense relay conditions, or may indirectly determine the failure by sensing a system parameter that shows the effects of the failure. Once the failure of the relay to open has been determined, the relay is again energized in an attempt to break loose the relay tack weld. If the relay fails to open after this first attempt, the relay may again be repulsed. Preferably a relay check timer is utilized to ensure that the system has stabilized before a repulse is attempted. A relay pulse timer may be used to control the pulse duration during these attempts. The number of attempts may also be limited.

摘要翻译： 提出了一种检测并尝试校正其触点的继电器定位焊接故障的方法。 该方法检测到继电器的触点在命令跳闸之后不能打开。 该感测可以直接感测继电器条件，或者可以通过感测显示故障的影响的系统参数间接地确定故障。 一旦确定了继电器断开故障，继电器再次通电，试图破坏继电器定位焊缝。 如果继电器在第一次尝试后无法打开，继电器可能会再次被击退。 优选地，使用继电器检查定时器来确保系统在尝试再次脉冲之前已经稳定。 在这些尝试期间，可以使用中继脉冲定时器来控制脉冲持续时间。 尝试次数也可能受到限制。