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1. 发明授权

US08659865B2 System and method for protection of electrical appliances 有权
标题翻译：电器保护系统及方法
公开(公告)号：US08659865B2
公开(公告)日：2014-02-25
申请号：US13073090
申请日：2011-03-28
申请人： Kumar Padmanabh , Sai Pawan Kumar Chevuru , Sanjoy Paul
发明人： Kumar Padmanabh , Sai Pawan Kumar Chevuru , Sanjoy Paul
IPC分类号： H02H3/08 , H02H3/00 , H02H9/08 , H02H7/00 , H02H9/00
CPC分类号： H02H3/08
摘要： An electrical circuit for protecting an electrical load from overload current is provided. The system includes a voltage transformer configured to receive AC mains voltage from an electric mains supply and further configured to apply reduced voltage to the electrical load. A control switch comprising metal contacts is connected to the voltage transformer. The control switch is configured to facilitate application of reduced value of AC mains voltage to the electrical load. A reduced value of current flowing through the electrical load is measured by a current transformer connected in series with the electrical load. The reduced value of current is then used for estimating a current consumption value in event of AC mains voltage being directly applied to the electrical load. A control signal is then used for disconnecting the electrical circuit if the estimated current consumption value is greater than threshold overload current value.
摘要翻译：提供了用于保护电负载免受过载电流的电路。该系统包括电压互感器，其被配置为从电源接收AC电源电压，并且还被配置为向电负载施加减小的电压。包括金属触点的控制开关连接到电压互感器。控制开关被配置为便于将电源电压的值减小到电负载。通过与负载串联的电流互感器测量流过电负载的电流的减小的值。然后将电流的减小值用于在AC电源电压直接施加到电负载的情况下估计电流消耗值。如果估计的电流消耗值大于阈值过载电流值，则控制信号用于断开电路。

2. 发明申请

US20120212872A1 SYSTEM AND METHOD FOR PROTECTION OF ELECTRICAL APPLIANCES 有权
标题翻译：用于保护电器的系统和方法
公开(公告)号：US20120212872A1
公开(公告)日：2012-08-23
申请号：US13073090
申请日：2011-03-28
申请人： Kumar Padmanabh , Sai Pawan Kumar Chevuru , Sanjoy Paul
发明人： Kumar Padmanabh , Sai Pawan Kumar Chevuru , Sanjoy Paul
IPC分类号： H02H3/08
CPC分类号： H02H3/08
摘要： An electrical circuit for protecting an electrical load from overload current is provided. The system includes a voltage transformer configured to receive AC mains voltage from an electric mains supply and further configured to apply reduced voltage to the electrical load. A control switch comprising metal contacts is connected to the voltage transformer. The control switch is configured to facilitate application of reduced value of AC mains voltage to the electrical load. A reduced value of current flowing through the electrical load is measured by a current transformer connected in series with the electrical load. The reduced value of current is then used for estimating a current consumption value in event of AC mains voltage being directly applied to the electrical load. A control signal is then used for disconnecting the electrical circuit if the estimated current consumption value is greater than threshold overload current value.
摘要翻译：提供了用于保护电负载免受过载电流的电路。该系统包括电压互感器，其被配置为从电源接收AC电源电压，并且还被配置为向电负载施加减小的电压。包括金属触点的控制开关连接到电压互感器。控制开关被配置为便于将电源电压的值减小到电负载。通过与负载串联的电流互感器测量流过电负载的电流的减小的值。然后将电流的减小值用于在AC电源电压直接施加到电负载的情况下估计电流消耗值。如果估计的电流消耗值大于阈值过载电流值，则控制信号用于断开电路。

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