Invention Grant
US09448264B2 Using load-side voltage and an auxiliary switch to confirm the close or open status of a meter disconnect switch 有权
使用负载侧电压和辅助开关确认仪表断开开关的关闭或打开状态

Using load-side voltage and an auxiliary switch to confirm the close or open status of a meter disconnect switch
Abstract:
The invention relates to a method and system for secure confirmation of the status of a metering disconnect switch. By utilizing both a mechanical auxiliary switch and the reading of a load-side voltage immediately after a switch operation, a nearly certain decision can be achieved that the state of the relay is accurately known. This invention will prevent a motorized or solenoid driven switch operator from achieving a close or open state of the switch that otherwise could be uncertain.
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