公开(公告)号：WO2004013895A3

公开(公告)日：2004-05-21

申请号：PCT/US0324214

申请日：2003-08-03

Applicant: SCHWEITZER ENGINEERING LAB INC

Inventor： WHITEHEAD DAVID E

IPC: H02H3/00 ,  H02H7/00

CPC classification number: H02H3/006

Abstract: A protective relay system for a power system having protective relays at specific locations in the system. Each location has specific setting information for the relay for operation of the relay at that location. Each relay in the protective relay system includes in memory all of the setting information for all of the locations in the power system. Connection of the relay to a key identifier member at a desired location, in one embodiment, provides an identification of that location to the relay. The identification may also be provided by a system computer to which the relay is connected at the desired location. The relay uses the information to obtain the correct setting information for the desired location from its memory for proper protection operation at the desired location, eliminating programming of replacement relays.

Abstract translation: 一种用于电力系统的保护继电器系统，在系统中的特定位置具有保护继电器。 每个位置都有特定的继电器设置信息，用于该位置的继电器操作。 保护继电器系统中的每个继电器在内存中包含电力系统中所有位置的所有设置信息。 在一个实施例中，将继电器连接到期望位置处的密钥标识符成员，将该位置的标识提供给中继。 该识别也可以由系统计算机提供，继电器连接在该系统计算机上的所需位置。 继电器利用这些信息从存储器中获得所需位置的正确设置信息，以便在所需位置进行适当的保护操作，从而消除了更换继电器的编程。

公开(公告)号：WO2004004114A3

公开(公告)日：2004-04-29

申请号：PCT/US0320190

申请日：2003-06-26

Applicant: GIBSON GUITAR CORP

Inventor： MENDENHALL ERIC

IPC: H03F1/52 ,  H03F3/30 ,  H02H7/00

CPC classification number: H03F3/3069 ,  H03F1/52

Abstract: A system and method for protecting an output transistor in an audio amplifier output stage includes a protection circuit (10) that protects the output transistor (22) from excessive currents and voltages, and does not interfere with the normal operation of the output transistor (22). The protection circuit (10) generates an estimate of the power dissipated by the output transistor (22), adjusts that estimate so that it varies with the temperature of the output transistor, and filters the time varying power estimate to obtain a filtered estimate of the power dissipated by the output transistor. When the filtered estimateexceeds a predetermined transistor power limit, the protection circuit (10) reduces the power dissipated by the output transistor (22).

Abstract translation: 一种用于保护音频放大器输出级中的输出晶体管的系统和方法包括保护电路（10），其保护输出晶体管（22）免受过大的电流和电压的影响，并且不干扰输出晶体管（22）的正常操作 ）。 保护电路（10）产生由输出晶体管（22）耗散的功率的估计，调整该估计以使其随着输出晶体管的温度变化，并且对时变功率估计进行滤波以获得 输出晶体管的功耗。 当滤波后的估算值超过预定的晶体管功率极限时，保护电路（10）减小输出晶体管（22）耗散的功率。

公开(公告)号：WO01039345A3

公开(公告)日：2002-03-14

申请号：PCT/US2000/032269

申请日：2000-11-21

IPC: H02J3/18 ,  H02J3/28 ,  H02J3/38 ,  H02J15/00 ,  H02H7/00

CPC classification number: H02J15/00 ,  H02J3/185 ,  H02J3/28 ,  H02J3/38 ,  Y02E40/24 ,  Y10T307/615

Abstract: Power is provided from an energy storage device to a utility network based on a detected condition, such as a fault, in the network. Specifically, it is determined whether a fault on the utility network is a near fault or a far fault relative to the energy storage device. Whether a fault is classified as "near" or "far" is determined based on a voltage drop in the utility network. Power is then supplied to the utility network based on whether the fault is a near fault or a far fault.

Abstract translation: 基于网络中检测到的诸如故障的状况，从能量存储设备向公用事业网络提供电力。 具体地，确定公用事业网络上的故障是否相对于能量存储设备是近故障或远故障。 基于公用事业网络中的电压降来确定故障是否被分类为“近”或“远”。 然后根据故障是近故障还是远故障，向公用事业网络供电。

公开(公告)号：WO01078208A1

公开(公告)日：2001-10-18

申请号：PCT/SE2001/000790

申请日：2001-04-10

IPC: H02H3/12 ,  H02H7/00 ,  H02H11/00 ,  H02M1/00 ,  H02M3/337 ,  B03C3/68 ,  H02M3/156

CPC classification number: H02H7/003 ,  H02H3/12 ,  H02H11/00 ,  H02M1/32 ,  H02M3/3376

Abstract: A method for protecting a DC generator against overvoltage in the event of a loss of load. A voltage limit value is defined and, when starting the current generator, one or a few small current pulses are generated during an initial phase. The voltage is measured across the output of the current generator during the initial phase and the voltages measured across the output of the current generator are compared with the voltage limit value. There is a changeover to normal operation only if all the voltages across the output of the current generator measured during the initial phase are below the voltage limit value. The current generation is interrupted and a loss of load is indicated if any one of the voltages across the output of the current generator measured during the initial phase exceeds the voltage limit value.

Abstract translation: 一种在发生负载损失的情况下保护直流发电机免受过电压的方法。 定义电压限制值，当启动电流发生器时，在初始阶段产生一个或几个小电流脉冲。 在初始阶段在电流发生器的输出端测量电压，并将跨过电流发生器的输出测量的电压与电压限制值进行比较。 只有在初始阶段测量的电流发生器的输出端上的所有电压都低于电压极限值，才能切换到正常工作。 如果在初始阶段测量的电流发生器输出端的任何一个电压中的任何一个电压超过电压限制值，则当前一代被中断并且指示负载损失。

公开(公告)号：WO01059903A1

公开(公告)日：2001-08-16

申请号：PCT/CH2001/000082

申请日：2001-02-06

IPC: H02H7/00 ,  H02H7/04 ,  H02H9/06

CPC classification number: H02H9/06 ,  H02H7/008 ,  H02H7/042

Abstract: The invention concerns the field of low voltage (LV) secondary circuits connected on very high voltage (VHV), high voltage (HV) or medium voltage (MV) primary power networks for transporting electric power. More particularly, the invention concerns a secondary circuit characterised in that it comprises an overvoltage protective device provided between the current or voltage transformer and a measuring and protective device.

Abstract translation: 本发明涉及连接在用于传输电力的非常高电压（VHV），高电压（HV）或中压（MV）主电力网络上的低电压（LV）二次电路的领域。 更具体地说，本发明涉及二次回路，其特征在于它包括设置在电流或电压变压器与测量和保护装置之间的过电压保护装置。

公开(公告)号：WO00041287A1

公开(公告)日：2000-07-13

申请号：PCT/US1999/028532

申请日：1999-12-02

IPC: H05B41/285 ,  H05B41/392 ,  H02H3/20 ,  H02H7/00 ,  H02H9/00 ,  H02H9/04

CPC classification number: H05B41/2851 ,  H05B41/3921 ,  Y02B20/186 ,  Y10S315/07 ,  Y10S323/905

Abstract: An arrangement for protecting low-voltage control circuitry from externally applied high voltages comprises a voltage source (30) and a current-sourcing circuit (40). Current-sourcing cicuit (40) provides current to an external controller (18) in a normal manner when an external source of high voltage is not applied to the output connections (42, 44), protects itself (40) and the voltage source (30) from damage when an external source of high voltage is applied to the output connections (42,44), and provides current to the external controller (18) in a normal manner after the external source of high voltage is subsequently removed from the output connections (42, 44). The arrangement may be employed as the dimming interface circuit (900) of an electronic dimming ballast (60) for gas discharge lamps to protect ballast circuitry from damage due to wiring errors during installation.

Abstract translation: 用于保护低压控制电路免受外部施加的高电压的装置包括电压源（30）和电流源电路（40）。 当外部高电压源不施加到输出连接（42,44）时，电流源电路（40）以正常方式向外部控制器（18）提供电流，保护自身（40）和电压源（ 当外部高电压源被施加到输出连接器（42,44）时，从外部的高电压源向外部控制器18提供电流，并且在外部高电压源随后从输出端被去除之后以正常方式提供电流 连接（42,44）。 该布置可以用作用于气体放电灯的电子调光镇流器（60）的调光接口电路（900），以保护镇流器电路免受安装期间布线错误的损坏。

公开(公告)号：WO00028792A2

公开(公告)日：2000-05-18

申请号：PCT/IL1999/000597

申请日：1999-11-07

IPC: H02H7/00 ,  H05B39/04

CPC classification number: H05B39/045 ,  H02H7/006 ,  Y02B20/142

Abstract: An electronic transformer (10) for lighting inlcudes a rectifier (13) coupled to an inverter (18, C2, C3, Q1, Q2) an output transformer (T1, T10) and a drive transformer (T2, T11). A protection mechanism (VR1, VR2) is responsively coupled to a winding of the output transformer and to a winding of the drive transformer such that the voltage across each of the windings are approximately equal and opposite during normal operation but differ substantially during a short-circuit.

Abstract translation: 一种用于照明的电子变压器（10）包括耦合到反相器（18，C2，C3，Q1，Q2）的输出变压器（T1，T10）和驱动变压器（T2，T11）的整流器（13）。 保护机构（VR1，VR2）响应地耦合到输出变压器的绕组和驱动变压器的绕组，使得在正常操作期间每个绕组上的电压大致相等并且相反，但在短时间内基本上不同， 电路。

公开(公告)号：WO9925483A9

公开(公告)日：1999-08-12

申请号：PCT/US9824233

申请日：1998-11-12

Applicant: NORDSON CORP ,  PERKINS JEFFREY A ,  TRAUTZSCH THOMAS A

Inventor： PERKINS JEFFREY A ,  TRAUTZSCH THOMAS A

IPC: B05B5/025 ,  B05B5/053 ,  B05B12/00 ,  B05B12/08 ,  H02H3/00 ,  H02H7/00 ,  B05B5/00 ,  B05D1/00 ,  H02H1/00

CPC classification number: B05B12/004 ,  B05B5/0531 ,  H02H7/003

Abstract: An apparatus for use in electrostatically applying coating material to an object includes a nozzle (21) which directs a flow of coating material toward the object (28). A power supply unit (9) provides an electric field to electrostatically charge the coating material. Control circuitry (16) is provided to monitor the operating efficiency of the power supply unit (9) and to provide an output signal when there is an impending failure of the power supply unit (9). The control circuitry monitors the relationship between an input current to the power supply unit (9) and an output current from the power supply unit (9). When the relationship between the input current to the power supply unit (9) and the output current from the power supply unit (9) is outside of a predetermined range, the control circuitry is effective to provide an output signal to notify an operator that there is an impending power supply unit failure.

Abstract translation: 一种用于将涂料静电施加到物体上的设备包括喷嘴（21），其将涂料流引向物体（28）。 电源单元（9）提供电场以对涂层材料进行静电充电。 提供控制电路（16）以监视电源单元（9）的操作效率并在电源单元（9）即将发生故障时提供输出信号。 控制电路监视到电源单元（9）的输入电流和来自电源单元（9）的输出电流之间的关系。 当到电源单元（9）的输入电流与来自电源单元（9）的输出电流之间的关系在预定范围之外时，控制电路有效地提供输出信号以通知操作员在那里 是即将发生的电源单元故障。

公开(公告)号：WO99026328A1

公开(公告)日：1999-05-27

申请号：PCT/US1998/024289

申请日：1998-11-13

IPC: H01H33/26 ,  H01H33/66 ,  H01H79/00 ,  H02H1/00 ,  H02H7/00

CPC classification number: H01H33/26 ,  H01H33/666 ,  H01H79/00 ,  H02H1/0023

Abstract: An arching fault protection system for a switchgear enclosure (10) includes a switching device (32) for rapidly diverting current from the source bus (22) of an electrical distribution system (12) in response to the detection of arcing faults in the system. The switching device (32), which may comprise a mechanical switch, a solid-state switch or hybrid device, quickly diverts current carried on the source bus (22) to effectively extinguish arcing fault currents present in the distribution system (12), preventing the generation of gases at high pressures and/or temperatures so as to protect the switchgear equipment from damage.

Abstract translation: 用于开关柜（10）的拱形故障保护系统包括开关装置（32），用于响应于检测到系统中的电弧故障，迅速地将电流从配电系统（12）的源总线（22）转向。 可以包括机械开关，固态开关或混合设备的开关装置（32）可快速转移源极总线（22）上承载的电流，以有效地消除分配系统（12）中存在的电弧故障电流，防止 在高压和/或温度下产生气体，以保护开关设备免受损坏。

公开(公告)号：WO99025483A1

公开(公告)日：1999-05-27

申请号：PCT/US1998/024233

申请日：1998-11-12

IPC: B05B5/025 ,  B05B5/053 ,  B05B12/00 ,  B05B12/08 ,  H02H3/00 ,  H02H7/00 ,  B05B5/00 ,  B05D1/00 ,  H02H1/00

CPC classification number: B05B12/004 ,  B05B5/0531 ,  H02H7/003

Abstract: An apparatus for use in electrostatically applying coating material to an object includes a nozzle (21) which directs a flow of coating material toward the object (28). A power supply unit (9) provides an electric field to electrostatically charge the coating material. Control circuitry (16) is provided to monitor the operating efficiency of the power supply unit (9) and to provide an output signal when there is an impending failure of the power supply unit (9). The control circuitry monitors the relationship between an input current to the power supply unit (9) and an output current from the power supply unit (9). When the relationship between the input current to the power supply unit (9) and the output current from the power supply unit (9) is outside of a predetermined range, the control circuitry is effective to provide an output signal to notify an operator that there is an impending power supply unit failure.

Abstract translation: 用于将涂料静电涂覆到物体上的设备包括：引导涂料流向物体（28）的喷嘴（21）。 电源单元（9）提供电场以对涂料进行静电充电。 提供控制电路（16）以监视电源单元（9）的工作效率，并在电源单元（9）即将发生故障时提供输出信号。 控制电路监视与电源单元（9）的输入电流与来自电源单元（9）的输出电流之间的关系。 当电源单元（9）的输入电流与来自电源单元（9）的输出电流之间的关系在预定范围之外时，控制电路有效地提供输出信号以通知操作者那里 是即将到来的电源单元故障。