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    • 3. 发明公开
    • POWER LINE COMMUNICATIONS APPARATUS AND METHOD
    • 电力线通信装置和方法
    • EP1428326A1
    • 2004-06-16
    • EP02770546.6
    • 2002-09-10
    • Square D Company
    • BROWN, Scott, R.SCOTT, Gary, W.
    • H04B3/56
    • H04B3/56H04B2203/5466H04B2203/547H04B2203/5483
    • A power line communications apparatus and method for providing communications over power leads connecting two pieces of electrical equipment. One power lead is split into similarly sized first and second parallel conductors. The first and second conductors pass through a current transformer, the first conductor having a load current flow opposite the second conductor with respect to the current transformer. The transmitted communications signal is applied to the secondary of the current transformer and is induced on the primary of the transformer, namely a loop formed by the first and second conductors. A second current transformer serves as a receiving transducer and senses the communications signal on the first and second conductors.
    • 一种电力线通信装置和方法,用于在连接两个电气设备的电力引线上提供通信。 一根电源导线被分成相似大小的第一和第二平行导线。 第一和第二导体通过电流互感器,第一导体具有与第二导体相对于电流互感器相反的负载电流。 传输的通信信号被施加到电流互感器的次级,并在变压器的初级,即由第一和第二导体形成的回路上感应。 第二电流互感器用作接收换能器并感测第一和第二导体上的通信信号。
    • 10. 发明公开
    • ARCING FAULT DETECTION SYSTEM
    • ARCING故障检测系统
    • EP1105956A1
    • 2001-06-13
    • EP99935468.1
    • 1999-07-07
    • SQUARE D COMPANY
    • SCOTT, Gary, W.
    • H02H3/00
    • H02H7/26H02H1/0015H02H3/025
    • An electrical isolation device (10) is provided for use in an electrical distribution network having a plurality of branch circuits (b1-b4) each defined by line and neutral conductors connected between a power source (UT) and a load (11-14), the line conductor being electrically connected to one of a plurality of line buses (11 and 12) at an electrical distribution panelboard, the neutral conductor being electrically connected to a neutral bus (N) at the electrical distribution panelboard. The isolation device includes a capacitance coupled between the line and neutral conductor of each of the branch circuits and is designed to provide a low impedance path for an arcing fault occurring on the line conductor of the branch circuit. The capacitance is sufficiently large to provide power factor correcting current.
    • 提供一种用于具有多个分支电路(b1-b4)的配电网络中的电气隔离装置(10),所述分支电路由连接在电源(UT)和负载(11-14)之间的线路和中性导体限定, 所述线路导线在配电盘处电连接到多个线路母线(11和12)中的一个,所述中性导线电连接到所述配电盘处的中性母线(N)。 隔离装置包括耦合在每个分支电路的线路和中性导体之间的电容,并且被设计为为在分支电路的线路导体上发生的电弧故障提供低阻抗路径。 电容足够大以提供功率因数校正电流。