| 主权项 |
1. An ATS bypass switch comprising:
a draw-out ATS switch; a bypass switch including an operating mechanism cooperating with a three-position contactor having a first position structured to electrically connect a system load to a first power source, a second position structured to electrically connect the system load to a second power source, and a third neutral, trip or open position structured to electrically disconnect the system load from both of the first and second power sources; and a processor structured to control both of said draw-out ATS switch and said bypass switch, said processor including a routine cooperating with said operating mechanism:
to determine if the first and second power sources synchronize within a first predetermined time and cause said three-position contactor to move from one of the first and second positions to the third neutral, trip or open position and to move from the third neutral, trip or open position to the other one of the first and second positions, and, otherwise,if the first and second power sources do not synchronize within the first predetermined time, to cause said three-position contactor to move from one of the first and second positions to the third neutral, trip or open position, and to move from the third neutral, trip or open position to the other one of the first and second positions after a second predetermined time. |
