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    • 2. 发明授权
    • Current transformer
    • 电流互感器
    • US09384884B2
    • 2016-07-05
    • US13981930
    • 2012-01-13
    • Matthew Brookes
    • Matthew Brookes
    • G01R19/18H01F27/40G01R15/18H01F38/30H01F38/32H01F38/38G01R19/00G01R1/00H02M1/00G01M1/00
    • H01F27/40G01M1/00G01R1/00G01R15/185G01R19/0092H01F38/30H01F38/32H01F38/38H02M1/00
    • A current transformer is described which comprises a housing having one or more apertures, each for receiving a primary cable or busbar, one or more magnetic cores enclosed within the housing and being positioned proximate to respective ones of the apertures so that a magnetic field is produced in a magnetic core when a primary current flows through a primary cable or busbar received through the respective aperture, and one or more secondary windings enclosed within the housing, each secondary winding being wrapped around at least a portion of a respective magnetic core so that a secondary current is induced in a secondary winding when a magnetic field is produced in the respective magnetic core. Shunt circuitry is enclosed within the housing and is connected across the secondary windings to generate a respective voltage signal for each secondary winding. A connector socket is integrally mounted to the housing for outputting the voltage signals. In this way, the labor costs incurred during installation of the current transformer can be reduced, a risk of wiring errors can be avoided, and a risk of electrocution from secondary terminals being left open-circuit is removed.
    • 描述了一种电流互感器,其包括具有一个或多个孔的壳体,每个孔用于接纳主电缆或母线,一个或多个磁芯封闭在壳体内并且定位成靠近相应的一个孔,从而产生磁场 当主电流流过通过相应孔口接收的主电缆或母线以及封装在壳体内的一个或多个次级绕组时,磁芯中的每个次级绕组围绕相应磁芯的至少一部分缠绕,使得 当在各个磁芯中产生磁场时,在次级绕组中感应出二次电流。 分流电路封装在壳体内,并且跨越次级绕组连接以产生每个次级绕组的相应电压信号。 连接器插座一体地安装到壳体以输出电压信号。 以这种方式,可以减少在安装电流互感器期间产生的劳动力成本,可以避免接线错误的风险,并且除去从次级端子开路的触电危险。
    • 3. 发明申请
    • CURRENT TRANSFORMER
    • 电流互感器
    • US20140028287A1
    • 2014-01-30
    • US13981930
    • 2012-01-13
    • Matthew Brookes
    • Matthew Brookes
    • H01F38/38H01F38/30H01F27/40G01R19/00
    • H01F27/40G01M1/00G01R1/00G01R15/185G01R19/0092H01F38/30H01F38/32H01F38/38H02M1/00
    • A current transformer is described which comprises a housing having one or more apertures, each for receiving a primary cable or busbar, one or more magnetic cores enclosed within the housing and being positioned proximate to respective ones of the apertures so that a magnetic field is produced in a magnetic core when a primary current flows through a primary cable or busbar received through the respective aperture, and one or more secondary windings enclosed within the housing, each secondary winding being wrapped around at least a portion of a respective magnetic core so that a secondary current is induced in a secondary winding when a magnetic field is produced in the respective magnetic core. Shunt circuitry is enclosed within the housing and is connected across the secondary windings to generate a respective voltage signal for each secondary winding. A connector socket is integrally mounted to the housing for outputting the voltage signals. In this way, the labour costs incurred during installation of the current transformer can be reduced, a risk of wiring errors can be avoided, and a risk of electrocution from secondary terminals being left open-circuit is removed.
    • 描述了一种电流互感器,其包括具有一个或多个孔的壳体,每个孔用于接纳主电缆或母线,一个或多个磁芯封闭在壳体内并且定位成靠近相应的一个孔,从而产生磁场 当主电流流过通过相应孔口接收的主电缆或母线以及封装在壳体内的一个或多个次级绕组时,磁芯中的每个次级绕组围绕相应磁芯的至少一部分缠绕,使得 当在各个磁芯中产生磁场时,在次级绕组中感应出二次电流。 分流电路封装在壳体内,并且跨越次级绕组连接以产生每个次级绕组的相应电压信号。 连接器插座一体地安装到壳体以输出电压信号。 以这种方式,可以减少在安装电流互感器期间产生的劳动力成本,可以避免接线错误的风险,并且除去从次级端子开路的触电危险。