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1. 发明申请

WO1997010635A1 OVERCURRENT PROTECTION CIRCUIT 审中-公开
标题翻译：过流保护电路
公开(公告)号：WO1997010635A1
公开(公告)日：1997-03-20
申请号：PCT/US1996014549
申请日：1996-09-12
申请人： RAYCHEM CORPORATION
发明人： RAYCHEM CORPORATION , DUFFY, Hugh , THOMAS, Brian
IPC分类号： H02H09/02
CPC分类号： H02H9/001 , H01H2033/163 , H02H9/026
摘要： An overcurrent protection system which will give a rapid response to overcurrents which cause a reduction in the voltage across the load, e.g. a partial or complete short across the load, and is particularly suitable for protecting circuits against relatively small overcurrents. As illustrated in Fig. 1 and Fig. 2, the system comprises: a circuit interruption element (108, 2) which, in the operating circuit, is connected in series between the electrical power supply (102, 12) and the electrical load (112, 8), and which has a closed state which permits the flow of a normal current, INORMAL, through the circuit interruption element, and an open state which permits the flow of at most a reduced current, substantially less then INORMAL, through the circuit interruption element; a control element (104, 6) which, in the operating circuit, is connected in parallel with the load, and which has an on state, when the voltage across the control element is a normal voltage, VNORMAL, and is converted to an off state, when the voltage across the control element falls to a value VFAULT, or less, and is functionaly linked to the circuit interruption element so that when the control element is in the on state, the circuit interruption element is in the closed state, and when the control element is in the off state, the circuit interruption element is in the open state; and a bypass element (106,4) which is connected in parallel with the circuit interruption element, and has a start-up state such that, if the circuit interruption element is in the fault state and a current INORMAL is passed through the bypass element, the voltage across the control element is greater than VFAULT, and a stopped state such that if the circuit interruption element is in the fault state as a result of the voltage across the control element having fallen to a value VFAULT or less, the current through the bypass element is such that the voltage across the control element remains at a value of VFAULT or less.
摘要翻译：一种过电流保护系统，其将对导致负载上的电压的降低的过电流进行快速响应，例如，跨越负载的部分或完全短路，并且特别适用于保护电路免受相对小的过电流的影响。如图1所示。 1，如图2所示，系统包括：电路中断元件（108,2），其在操作电路中串联连接在电源（102,12）和电负载（112,8）之间，并且具有允许通过电路中断元件流过正常电流INORMAL的关闭状态，以及允许通过电路中断元件至少流过大致小于INORMAL的减小电流的打开状态; 控制元件（104,6），其在所述操作电路中与所述负载并联连接，并且当所述控制元件两端的电压为正常电压VNORMAL时，所述控制元件（104,6）处于导通状态，并且被转换为断开当控制元件两端的电压降到VFAULT以下，并且与电路中断元件功能相连时，当控制元件处于导通状态时，电路中断元件处于闭合状态，并且当控制元件处于关闭状态时，电路中断元件处于打开状态; 以及旁路元件（106,4），其与电路中断元件并联连接，并且具有启动状态，使得如果电路中断元件处于故障状态并且当前INORMAL通过旁路元件控制元件两端的电压大于VFAULT，停止状态使得如果控制元件两端的电压下降到VFAULT以下，电路中断元件处于故障状态，则电流通过旁路元件使得控制元件两端的电压保持在VFAULT或更小的值。

2. 发明申请

WO1997010636A2 OVERCURRENT PROTECTION CIRCUIT 审中-公开
标题翻译：过流保护电路
公开(公告)号：WO1997010636A2
公开(公告)日：1997-03-20
申请号：PCT/US1996014550
申请日：1996-09-12
申请人： RAYCHEM CORPORATION
发明人： RAYCHEM CORPORATION , DUFFY, Hugh , CHIANG, Justin , MIDGLEY, John
IPC分类号： H02H09/02
CPC分类号： H02H3/025 , C11D11/0082 , C11D17/06 , H02H3/085 , H02H3/334 , H02H9/026
摘要： An electrical protection system as illustrated in the figure which can be connected in series between an electrical power supply and an electrical load to form an operating circuit, which, when so connected, protects the circuit from overcurrents. The system comprises: a control element (104) which has a relatively low resistance, RLOW, when a relatively low current, INORMAL, is passing through it, and is converted to a relatively high resistance RFAULT, when the current through it increases from INORMAL to a relatively high current, IFAULT; a circuit interruption (108) element which is connected in series with the control element, has a normal state when the current INORMAL is passing through the control element, the normal state permitting the current INORMAL to pass through the system, and has a fault state which permits the flow of at most a reduced current, substantially less than INORMAL; and a bypass element (106) which is connected in parallel with the series combination of the control element and the circuit interruption element, and is functionally linked to the circuit interruption element so that an increase in current passing through the bypass element can convert the circuit interruption element into the fault state. When the current through the system increases from INORMAL to IFAULT, the resistance of the control element increases from RLOW to RFAULT, an increased current passes through the bypass element, and the circuit interruption element is converted into the fault state.
摘要翻译：如图所示的电气保护系统，其可以串联连接在电源和电负载之间以形成操作电路，当这样连接时，电路保护电路免于过电流。该系统包括：当相对低电流INORMAL正在通过时，具有相对低电阻RLOW的控制元件（104），并且当通过其的电流从INORMAL增加时，转换成相对高电阻的RFAULT 达到相对较高的电流，IFAULT; 与控制元件串联连接的电路中断（108）元件在当前INORMAL通过控制元件时具有正常状态，允许当前INORMAL通过系统的正常状态，并且具有故障状态这允许至少流过减小的电流，基本上小于INORMAL; 以及与控制元件和电路中断元件的串联组合并联连接的旁路元件（106），并且功能上与电路中断元件相连，使得通过旁路元件的电流的增加可以将电路中断元件进入故障状态。当通过系统的电流从INORMAL增加到IFAULT时，控制元件的电阻从RLOW增加到RFAULT，增加的电流通过旁路元件，并且电路中断元件被转换为故障状态。

3. 发明申请

WO1998031084A1 FREQUENCY-SELECTIVE CIRCUIT PROTECTION ARRANGEMENTS 审中-公开
标题翻译：频率选择电路保护安排
公开(公告)号：WO1998031084A1
公开(公告)日：1998-07-16
申请号：PCT/US1997000524
申请日：1997-01-14
申请人： RAYCHEM CORPORATION
发明人： RAYCHEM CORPORATION , DUFFY, Hugh , MIDGLEY, John , THOMAS, Brian
IPC分类号： H02H03/33
CPC分类号： H02H3/334 , H02H3/46
摘要： An electrical protection system which can be connected between an electrical power supply (102) and an electrical load (112) to form an operating circuit having a current-carrying line and a return line, and which, when so connected, protects the operating circuit from (A) ground faults and (B) currents or voltages in a selected frequency range, which system comprises: a. a circuit interruption element (108), which can adopt a normal state which permits the flow of a normal current, INORMAL, in the circuit, or a fault state which permits the flow of at most a reduced current, substantially less than INORMAL, in the circuit; b. a comparison element (114), which (1) comprises (a) a line sense component (121) which senses the level of a current, ILINE, in the current-carrying line of the circuit at a line sense point between a line sense input and a line sense output, (b) a return sense component (123) which senses the level of a current, IRETURN, in the return line of the circuit at a return sense point between a return sense input and a return sense output, and (c) optionally, a passthru sense component (125) which senses the level of a current, IPASSTHRU, at a passthru sense point in a passthru line, and (2) determines a net effective current, ICOMPARISON, by comparing the levels of ILINE, IRETURN and IPASSTHRU, and changes the circuit interruption element from its normal state to its fault state if ICOMPARISON increases from a value less than a predetermined current imbalance value, IIMBALANCE, to a value more than IIMBALANCE; and c. a bypass element (106) which has a current through it, IBYPASS, which, (1) when the circuit is subjected to a current above a predetermined current value in a selected frequency range; or (2) when the load is subjected to a voltage above a predetermined voltage value in a selected frequency range; changes and thus causes ICOMPARISON to increase to more than IIMBALANCE, thereby causing the comparison element to change the circuit interruption element from its normal state to its fault state.
摘要翻译：一种电气保护系统，其可以连接在电源（102）和电负载（112）之间，以形成具有载流线路和返回线路的操作电路，并且当连接时，保护操作电路来自（A）接地故障和（B）选定频率范围内的电流或电压，该系统包括：a。电路中断元件（108），其可以采用允许电路中的正常电流（INORMAL）流动的正常状态或允许至多减少电流的电流基本上小于INORMAL的故障状态，电路; 湾比较元件（114），其中（1）包括（a）线感测元件（121），其在线感测点之间的线感测点检测电路的载流线中的电流水平，ILINE 输入和线路感测输出，（b）返回感测组件（123），其在返回感测输入和返回感测输出之间的返回感测点检测电路的返回线中的电流水平（IRETURN）和（c）可选地，感测组件（125），其感测当前线路的水平，IPASSTHRU，其在passthru线中的传感点，以及（2）通过比较所述目标线路的水平来确定净有效电流ICOMPARISON ILINE，IRETURN和IPASSTHRU，并且如果ICOMPARISON从小于预定电流不平衡值IIMBALANCE的值增加到大于IIMBALANCE的值，则将电路中断元件从正常状态更改为其故障状态; 和c。具有通过其的电流的旁路元件（IB），IBYPASS，其中（1）当所述电路在所选频率范围内经受超过预定电流值的电流时; 或（2）当负载在选定的频率范围内经受高于预定电压值的电压时; 改变，从而使ICOMPARISON增加到超过IIMBALANCE，从而使比较元件将电路中断元件从其正常状态改变到其故障状态。

4. 发明申请

WO1997020372A1 CIRCUIT PROTECTION ARRANGEMENTS 审中-公开
标题翻译：电路保护装置
公开(公告)号：WO1997020372A1
公开(公告)日：1997-06-05
申请号：PCT/US1996019105
申请日：1996-11-25
申请人： RAYCHEM CORPORATION
发明人： RAYCHEM CORPORATION , DUFFY, Hugh , CHIANG, Justin , MIDGLEY, John , THOMAS, Brian
IPC分类号： H02H03/33
CPC分类号： H02H3/334 , H02H3/105
摘要： An electrical protection system which can be connected between an electrical power supply and an electrical load to form an operating circuit having a current-carrying line and a return line, and which, when so connected, protects the operating circuit from (A) ground faults and (B) overcurrents and/or overvoltages, which system comprises: a. a circuit interruption element, which, when the system is so connected, can adopt a normal state which permits the flow of a normal current, INORMAL, in the circuit, or a fault state which permits the flow of at most a reduced current, substantially less than INORMAL, in the circuit; b. a comparison element, which, when the system is so connected, (1) comprises (a) a line sense component which senses the level of a current, ILINE, in the current-carrying line of the circuit at a line sense point between a line sense input and a line sense output, (b) a return sense component which senses the level of a current, IRETURN, in the return line of the circuit at a return sense point between a return sense input and a return sense output, and (c) optionally, a passthru sense component which senses the level of a current, IPASSTHRU, at a passthru sense point in a passthru line, and (2) determines a net effective current, ICOMPARISON, by comparing the levels of ILINE, IRETURN and IPASSTHRU, and changes the circuit interruption element from its normal state to its fault state if ICOMPARISON increases from a value less than a predetermined current imbalance value, IIMBALANCE, to a value more than IIMBALANCE; and c. a bypass element which, when the system is so connected, has a current through it, IBYPASS, which, when the circuit is subjected to an overcurrent and/or an overvoltage, changes and thus causes ICOMPARISON to increase to more than IIMBALANCE, thereby causing the comparison element to change the circuit interruption element from its normal state to its fault state.
摘要翻译：一种电气保护系统，其可以连接在电源和电负载之间以形成具有载流线路和返回线路的操作电路，并且当连接时，保护操作电路免受（A）接地故障和（B）过电流和/或过电压，该系统包括：a。电路中断元件，当系统如此连接时，可以采用允许电路中正常电流INORMAL流动的允许流动至少减小电流的故障状态的正常状态，基本上小于INORMAL，在电路中; 湾比较元件，当系统如此连接时，（1）包括（a）线感测部件，其感测在电路的载流线路中的线路感测点处的电流水平，ILINE 线路感测输入和线路感测输出，（b）返回感测组件，其在返回感测输入和返回感测输出之间的返回感测点处感测电路的返回线中的电流水平IRETURN，以及（c）可选地，在passthru线中的传感点感测当前IPASSTHRU的水平的传感器感知组件，以及（2）通过比较ILINE，IRETURN和...的水平来确定净有效电流ICOMPARISON 如果ICOMPARISON从小于预定电流不平衡值IIMBALANCE的值增加到大于IIMBALANCE的值，则将电路中断元件从正常状态更改为其故障状态; 和c。当系统如此连接时，旁路元件具有通过其的电流IBYPASS，当电路经受过电流和/或过电压时，IBYPASS发生变化，从而使ICOMPARISON增加到超过IIMBALANCE，从而导致将电路中断元件从正常状态改变为其故障状态的比较元件。

5. 发明申请

WO1997010637A1 OVERCURRENT PROTECTION CIRCUIT 审中-公开
标题翻译：过流保护电路
公开(公告)号：WO1997010637A1
公开(公告)日：1997-03-20
申请号：PCT/US1996014686
申请日：1996-09-12
申请人： RAYCHEM CORPORATION
发明人： RAYCHEM CORPORATION , DUFFY, Hugh , WYNN, Craig , NICKOLS, St. Elmos, III , THOMAS, Brian
IPC分类号： H02H09/02
CPC分类号： H02H3/025 , H02H9/026
摘要： An overcurrent protection system which will give a rapid response to relatively small overcurrents. In a first aspect, the system can be connected between an electrical power supply (12) and an electrical load (26) to form an operating circuit. When so connected, the system protects the circuit from overcurrents, has a normal operating condition and a fault condition, and comprises: a circuit interruption element (24) having a normal state which permits the flow of a normal current, INORMAL, when the system is in the normal operating condition, and a fault state which permits the flow of at most a reduced current, substantially less than INORMAL, when the system is in the fault condition; and a control element (18), connected in series with the circuit interruption element, the control element having a variable resistance which is low when the current in the system does not exceed the normal current, INORMAL, by a predetermined current amount, and increases by at least a predetermined resistance amount when the current in the system exceeds the normal current, INORMAL, by the predetermined current amount; the circuit interruption element changing from its normal state to its fault state, thereby causing the system to change from its normal operating condition to its fault condition, when the resistance of the control element has increased by the predetermined resistance amount.
摘要翻译：一种过电流保护系统，能够对相对较小的过电流进行快速响应。在第一方面，系统可以连接在电源（12）和电负载（26）之间，以形成操作电路。当这样连接时，系统保护电路免受过电流，具有正常的操作条件和故障状况，并且包括：具有正常状态的电路中断元件（24），其允许正常电流（INORMAL）流动，当系统处于正常工作状态，以及当系统处于故障状态时允许至多减少电流（基本上小于INORMAL）的故障状态; 以及与所述电路中断元件串联连接的控制元件（18），所述控制元件具有在系统中的电流不超过正常电流（INORMAL）预定电流量时为低的可变电阻，并且增加当系统中的电流超过正常电流INORMAL达到预定电流量时，至少预定的电阻量; 电路中断元件从其正常状态变为其故障状态，从而当控制元件的电阻增加预定电阻量时，使系统从其正常工作状态变为其故障状态。

6. 发明申请

WO1997010609A1 ELECTRICAL SWITCH 审中-公开
标题翻译：电气开关
公开(公告)号：WO1997010609A1
公开(公告)日：1997-03-20
申请号：PCT/US1996014687
申请日：1996-09-12
申请人： RAYCHEM CORPORATION
发明人： RAYCHEM CORPORATION , DUFFY, Hugh
IPC分类号： H01H33/16
CPC分类号： H01H33/161 , H01H2033/163 , H02H3/025 , H02H9/026
摘要： An electrical switch arrangement as illustrated in Fig. 1 and Fig. 9, comprising a first, series, mechanical switch (4), a second, parallel, mechanical switch (6), and a PTC device (2), with the PTC device and second switch connected in parallel and the parallel combination connected in series with the first switch, or the PTC device and first switch connected in series and the series combination connected in parallel with the second switch. The arrangement can interrupt a current and voltage higher than the rated currents and voltages of each of the switches and the PTC devices. The parallel switch can be rated to interrupt the rated interrupt current of the electrical switch arrangement at a voltage below the rated voltage of the electrical switch arrangement, and the series switch can be rated to interrupt a current below the rated interrupt current of the electrical switch arrangement at the rated voltage of the electrical switch arrangement.
摘要翻译：如图1所示的电气开关装置。 1， 9，包括第一串联机械开关（4），第二并联机械开关（6）和PTC装置（2），PTC装置和第二开关并联连接，并联组合串联连接与第一开关或PTC装置和第一开关串联连接，串联组合与第二开关并联连接。该装置可以中断高于每个开关和PTC装置的额定电流和电压的电流和电压。并联开关可以额定为在电气开关装置的额定电压以下的电压下中断电气开关装置的额定中断电流，并且串联开关可以额定为中断低于电气开关额定中断电流的电流在电气开关装置的额定电压下进行布置。

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