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    • 44. 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。
    • 45. 发明授权
    • Current detection circuit and transformer current measuring system
    • 电流检测电路和变压器电流测量系统
    • US08988064B2
    • 2015-03-24
    • US13061964
    • 2010-02-05
    • Yasunori HakodaKimiyoshi Kobayashi
    • Yasunori HakodaKimiyoshi Kobayashi
    • G01R15/18H02M3/335G01R19/00G01R19/18H02M1/00
    • H02M3/335G01R15/185G01R19/0092G01R19/18H02M1/40H02M2001/0009H02M2001/0058Y02B70/1491
    • A current detection circuit and a transformer current measurement system are offered, in which when elements and circuit, which cannot operate originally unless a transformer with small excitation inductance is used, are connected to a primary side of the transformer, even if the transformer, whose excitation inductance is large, is used, transformer current (primary current and secondary current) can be measured without deteriorating operations of the elements and circuit.[Means for solving] A current detector CT (current transformer) is in series connected to a primary winding 111 of a transformer 11, and an inductor La is in parallel connected to to a series connection of the current detector CT and the primary winding 111. And, secondary current I2 of the transformer 11 is measured based on a value of primary current IT detected by the current detector CT.
    • 提供电流检测电路和变压器电流测量系统,其中当使用不能最初操作的元件和电路,除非使用具有小激励电感的变压器,连接到变压器的初级侧,即使变压器的 励磁电感大,使用时,可以测量变压器电流(初级电流和次级电流),而不会使元件和电路的运行恶化。 [解决方案]电流检测器CT(电流互感器)串联连接到变压器11的初级绕组111,并且电感器La并联连接到电流检测器CT和初级绕组111的串联连接 并且,基于由电流检测器CT检测到的一次电流IT的值来测量变压器11的次级电流I2。
    • 49. 发明授权
    • Sampling module and a method of sampling one or more analogue characteristics of a power transmission system
    • 采样模块和一种采样一个或多个电力传输系统的模拟特性的方法
    • US07768253B2
    • 2010-08-03
    • US12090873
    • 2006-10-19
    • Simon Kidd
    • Simon Kidd
    • G01R19/18H04L7/00H03M3/00
    • G01R19/2509G01R15/14G01R19/2513
    • A sampling module, for sampling one or more analog characteristics of a power transmission system, including at least one input circuit for sampling a respective analog characteristic. Each input circuit includes: a scaling circuit for reducing the magnitude of the analog characteristic to a desired level; an isolating circuit for creating an electrical barrier between respective upstream and downstream portions of the input circuit; and an analog to digital converter for digitizing the analog characteristic to produce a digital data stream. The scaling circuit is electrically connected to an input of the analog to digital converter, and the isolating circuit is electrically connected directly to an output thereof.
    • 一种采样模块,用于对电力传输系统的一个或多个模拟特性进行采样,包括至少一个输入电路,用于对相应的模拟特性进行采样。 每个输入电路包括:缩放电路,用于将模拟特性的幅度减小到期望的电平; 隔离电路,用于在输入电路的相应上游部分和下游部分之间产生电气屏障; 以及用于数字化模拟特性以产生数字数据流的模数转换器。 缩放电路电连接到模数转换器的输入,并且隔离电路直接电连接到其输出端。
    • 50. 发明申请
    • VOLTAGE DETECTION DEVICE AND VOLTAGE DETECTION METHOD
    • 电压检测装置及电压检测方法
    • US20100164480A1
    • 2010-07-01
    • US12160645
    • 2007-01-12
    • Tsuyoshi MoritaHayato NagakuraShinsuke Yoshida
    • Tsuyoshi MoritaHayato NagakuraShinsuke Yoshida
    • G01R19/18
    • G01R19/18
    • A voltage detection device that is connected to a DC circuit to which a DC voltage is applied and that detects the DC voltage applied to the DC circuit comprises a voltage conversion means for outputting a first voltage that increases as the DC voltage increases and a second voltage that decreases as the DC voltage increases, a voltage calculation means for inputting the first voltage and the second voltage outputted from the voltage conversion means and calculating the DC voltage based upon a difference between the inputted first voltage and the inputted second voltage, and a first failure judgment means for judging that failure has occurred if at least one of the first voltage and the second voltage is not inputted to the voltage calculation means.
    • 连接到施加有直流电压的直流电路并检测施加到直流电路的直流电压的电压检测装置包括电压转换装置,用于输出随着直流电压增加而增加的第一电压,第二电压 电压计算装置,用于输入从电压转换装置输出的第一电压和第二电压,并根据输入的第一电压和输入的第二电压之间的差计算直流电压;以及第一 如果第一电压和第二电压中的至少一个没有被输入到电压计算装置,则判断是否发生故障的判定装置。