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    • 82. 发明授权
    • Protective circuit for loads
    • 负载保护电路
    • US09025290B2
    • 2015-05-05
    • US13770981
    • 2013-02-19
    • Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.Hon Hai Precision Industry Co., Ltd.
    • Wan-Hong ZhangHong-Ru Zhu
    • H02H3/20H02H9/04H02H5/10
    • H02H3/20H02H5/10
    • A protective circuit includes a first jack, a second jack, a first control unit, a detecting circuit, and a logic control circuit. The first jack is connected to a power supply, and includes a grounding wire and a live wire. The second jack is connected to a load, and includes a grounding wire and a live wire. The first control unit includes a first relay, the first relay is connected to the live wire of the first jack and the live wire of the second jack. The detecting circuit detects whether the grounding wire of the first jack is grounded, and outputs indication signals accordingly. The logic control circuit outputs a control signal to the first control unit according to the indication signals to turn on/off the first relay, for allowing the live wire of the first jack to be connected to/disconnected from the live wire of the second jack.
    • 保护电路包括第一插座,第二插座,第一控制单元,检测电路和逻辑控制电路。 第一插座连接电源,并包括接地线和电线。 第二插座连接到负载,并包括接地线和带电线。 第一控制单元包括第一继电器,第一继电器连接到第一插座的带电线和第二插座的带电线。 检测电路检测第一插座的接地线是否接地,并相应地输出指示信号。 逻辑控制电路根据指示信号向第一控制单元输出控制信号以打开/关闭第一继电器,以允许第一插座的带电线与第二插座的带电线连接/断开 。
    • 84. 发明授权
    • Power supply monitoring system
    • 电源监控系统
    • US08779776B2
    • 2014-07-15
    • US12312628
    • 2007-11-23
    • Karl Nathan Edwards
    • Karl Nathan Edwards
    • G01R31/02H02H3/32G01R31/04H02H3/38H02H11/00H01H83/14H02H5/10
    • G01R31/42G01R31/021G01R31/024G01R31/025G01R31/04G01R31/041H01H83/14H02H3/32H02H3/38H02H3/50H02H5/105H02H11/001H02H11/002H02H11/005
    • A method for detecting predetermined fault conditions associated with the supply of AC electrical power to a consumer, the supply having an active conductor and a neutral conductor with the neutral conductor being connected to earth. The method comprises providing a first current detector associated with the active conductor, providing a second current detector associated with the neutral conductor; providing a voltage detector to detect voltage between the active conductor and the neutral conductor, and checking a current ratio of neutral current to active current whereby the current ratio is indicative of a predetermined fault condition. Also disclosed is a method of checking the condition of supply line active and neutral conductors in a consumer's supplied premises including determining the impedance of the active conductor and the impedance of the neutral conductor to indicate the condition of each of the active and neutral conductors.
    • 用于检测与向消费者提供AC电力相关联的预定故障状况的方法,所述电源具有有源导体和中性导体,所述中性导体连接到地球。 该方法包括提供与有源导体相关联的第一电流检测器,提供与中性导体相关联的第二电流检测器; 提供电压检测器来检测有源导体和中性导体之间的电压,并且检查中性点电流与有功电流的电流比,由此电流比指示预定的故障状态。 还公开了一种检查消费者提供的场所中供电线有源和中性导体的状况的方法,包括确定有源导体的阻抗和中性导体的阻抗,以指示每个有源和中性导体的状态。
    • 87. 发明申请
    • Leakage current detection interrupter with open neutral detection
    • 泄漏电流检测断路器具有开路中性检测
    • US20050243485A1
    • 2005-11-03
    • US11107754
    • 2005-04-18
    • Bernard GershenSteve Campolo
    • Bernard GershenSteve Campolo
    • H01H83/02H01R13/713H02H3/00H02H3/16H02H5/10H02H7/22
    • H02H3/162H02H5/105H02H7/228
    • A leakage current detection interrupter (LCDI) having open neutral detection. In one embodiment, the LCDI is formed in a plug and includes a circuit interrupter means for breaking a conductive path between line side phase and neutral conductors and load side phase and neutral conductors. A tripping means is coupled to operate the circuit interrupter means to break the conductive path upon the detection of the opening of the line side neutral conductor referred to as open neutral condition. The tripping means, which uses the neutral path as a return path if leakage current is detected, will, with this invention, use a line side ground conductor as a return path if the neutral path is broken anywhere between a service panel entrance and the plug. In response to the opening of the line side neutral conductor or leakage current, the LCDI interrupts the flow of current to a load such as a window air conditioner.
    • 具有开路中性检测的漏电流检测断路器(LCDI)。 在一个实施例中,LCDI形成在插头中,并且包括用于断开线路侧相和中性导体之间的导电路径以及负载侧相和中性导线的断路器装置。 跳闸装置被耦合以操作电路断续器装置,以便在检测到被称为开放空载状态的线路侧中性导体的开路时断开导电路径。 如果检测到泄漏电流,则使用中立路径作为返回路径的跳闸装置,如果在维修面板入口和插头之间的任何地方中断路径断开,本发明将使用线路侧接地导体作为返回路径 。 响应于线路侧中性导体的开路或漏电流,LCDI中断了诸如窗式空调的负载的电流流动。
    • 89. 发明申请
    • Enhanced method and apparatus for protecting against bolted short, open neutral, and reverse polarity conditions in an electronic circuit
    • 用于在电子电路中防止螺栓短路,打开中性线和反极性条件的增强的方法和装置
    • US20050024798A1
    • 2005-02-03
    • US10631435
    • 2003-07-30
    • Aaron ReynosoLloyd Ebisu
    • Aaron ReynosoLloyd Ebisu
    • H02H3/08H02H3/33H02H5/10H02H3/00
    • H02H3/08H02H3/338H02H5/105
    • A protection circuit for generating current to activate a Trip Solenoid of a circuit breaker in response to a detected fault includes, an electrical connection from the circuit to a terminal of Solenoid; an electrical connection from the circuit to a Neutral wire; an electrical connection from the circuit to an Earth Ground wire; at least one voltage detection mechanism for detecting a fault condition; and at least one Transistor electrically accessible from at least one voltage detection mechanism for generating current to activate the Trip Solenoid. In operation of the circuit one of at least one voltage detection mechanism detects a voltage anomaly between Neutral and Earth Ground and activates one of at least one Transistor to generate a source-to-ground current, the generated current traveling through the Trip Solenoid and the protection circuit to Earth Ground, the generated current sufficient to activate the Trip Solenoid thereby opening the circuit breaker.
    • 用于响应于检测到的故障来产生电流以激活断路器的跳闸螺线管的保护电路包括从电路到电磁线圈的端子的电连接; 从电路到中性线的电连接; 从电路到接地线的电气连接; 用于检测故障状况的至少一个电压检测机构; 以及至少一个晶体管,其从至少一个电压检测机构电可访问,用于产生电流以激活Trip电磁阀。 在电路工作中,至少一个电压检测机构中的一个检测机构检测中性线和地线之间的电压异常,并且激活至少一个晶体管中的一个以产生源极到地电流,所产生的电流通过Trip电磁线圈和 保护电路到接地,产生的电流足以激活Trip电磁阀,从而打开断路器。