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    • 1. 发明申请
    • POWERLESS RESET IN A SELF POWERED RELAY
    • 自供电继电器中无电源复位
    • WO2012042318A1
    • 2012-04-05
    • PCT/IB2011/001303
    • 2011-06-10
    • ABB TECHNOLOGY LTDHARDIK, B., PatelJATIN, ParmarMOHAMMED, Y., ShafiNIRAJ, Suthar
    • HARDIK, B., PatelJATIN, ParmarMOHAMMED, Y., ShafiNIRAJ, Suthar
    • H02H1/06
    • H02H1/063
    • A self powered relay having a feature for powerless trip reset in the relay is provided. The relay makes use of one or more capacitors (120, 130) for storing energy for trip operations during the normal condition in an electrical system. The stored energy is utilized during a trip reset operation when there is no power supply derivable from the current flowing in the electrical path of the equipment being protected. The charging of the storage capacitors is enabled with help of a switch in the charging/discharging path of the capacitors and a microcontroller that controls the switch to operate the switch algorithmically for charging operation. The relay uses an electromagnetic flag (110) for capturing the trip state of the relay. The trigger for trip set in the electromagnetic relay is generated by the relay and the reset of the electromagnetic flag is generated by a user of the relay with help of a push button (230) or devices alike. A method for enabling reset of a trip state in the self powered relay is also provided.
    • 提供了具有用于继电器中无功跳闸复位功能的自供电继电器。 继电器利用一个或多个电容器(120,130)用于在电气系统的正常状态期间存储用于跳闸操作的能量。 当不存在从被保护的设备的电气路径中流动的电流导出的电源时,在跳闸复位操作期间利用存储的能量。 存储电容器的充电可通过电容器的充电/放电路径中的开关和控制开关的微控制器来进行充电操作。 继电器使用电磁标志(110)来捕获继电器的跳闸状态。 电磁继电器中设置的跳闸触发器由继电器产生,电磁标志的复位由继电器的用户通过按钮(230)或设备相似的方式产生。 还提供了一种用于使自动继电器中的跳闸状态复位的方法。