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公开(公告)号：US4528539A
公开(公告)日：1985-07-09
申请号：US625488
申请日：1984-06-28
CPC分类号： H01H83/223 , H01H71/164 , H01H71/7409
摘要： A reduced-size thermal overload relay having a housing (2) that includes three narrow compartments (2k, 2l, 2m) in which are mounted three connector brackets (16,18,20) supporting three flat bimetal members (16j, 18j, 20j). Three narrow cassette heaters (6,8,10) are mounted at the upper part of the housing and held in by a snap-in hold-down device (12) that engages pairs of hooks (6b, 7b) at the lower portions of the heaters. A pushbutton (12a) on the hold-down device extends through a hole (3c) in the front wall of the housing for manual depression to release the heaters for removal. Each bracket (16) is H-shaped having legs (16c, 16d) for mounting it in a housing compartment (2k) and arms (16a, 16b) connected by a platform (16e) to which the upper terminal clip (6d) of the cassette heater is clamped with a screw (16q), the small angles of this platform and terminal clip automatically drawing the flat heater element (6c) into desired spacing with the bimetal member. The current flow down the arms (16a, 16b) prevents loss of heat through the terminal lead (16h). A switch (4) mounted at the side of the housing is tripped by a joint or differential operating mechanism (28,30,32) mounted below the three compartments and actuated by the three deflecting bimetal members.
摘要翻译： 一种尺寸较小的热过载继电器，其具有壳体（2），壳体（2）包括三个窄的隔间（2k，21m，2m），其中安装有三个连接器支架（16,18,20），支撑三个平坦的双金属构件（16j，18j，20j ）。 三个狭窄的盒式加热器（6,8,10）安装在壳体的上部，并通过卡扣式压紧装置（12）保持，该卡扣式压紧装置（12）在下侧部分接合成对的钩（6b，7b） 加热器。 压紧装置上的按钮（12a）延伸穿过壳体前壁中的孔（3c），用于手动按压以释放加热器以便移除。 每个支架（16）是H形的，其具有用于将其安装在壳体隔室（2k）中的腿部（16c，16d）和通过平台（16e）连接的臂（16a，16b），上端子夹子 盒式加热器用螺钉（16q）夹紧，该平台和端子夹的小角度自动地将扁平加热器元件（6c）拉伸成与双金属构件所需的间隔。 电流向下流动臂（16a，16b）可防止通过端子引线（16h）的热量损失。 安装在壳体一侧的开关（4）通过安装在三个隔室下方并由三个偏转双金属构件致动的接头或差速器操作机构（28,30,32）而跳闸。
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2.发明授权Constant load snap switch with manual or automatic reset, stop and test selection 失效恒定负载快速开关，具有手动或自动复位，停止和测试选择
公开(公告)号：US4520244A
公开(公告)日：1985-05-28
申请号：US453208
申请日：1982-12-27
CPC分类号： H01H5/18
摘要： A constant load and constant contact force snap-action switch having a normally-closed movable operate contact on a flipper blade which has a compression strip that snaps through an S-curvature to a reverse buckled state to trip the operate contact open. The flipper blade is coupled through an insulating cap to the leaf spring mounted movable alarm contact to close the latter at the same time. A return spring biased reset lever resets the operate contacts on depression down a first amount, opens the operate contact without closing the alarm contacts on depression down a second amount for stop purposes, and trips the operate contacts open on lifting upwards for test purposes. On reset, lost motion in the coupling cap knocks the alarm contact open if welded. A selector is settable to select any of three functions for the reset lever, (1) reset-stop-test, (2) auto reset stop, or (3) reset test.
摘要翻译： 一种恒定载荷和恒定的接触力快动开关，其具有在引导片上具有常闭可动操作触头，所述触发板具有压缩条，所述压缩条通过S形曲率抵接到反向弯曲状态以使操作触点断开。 导板叶片通过绝缘盖连接到板簧安装的可动报警触点，以同时闭合。 复位弹簧偏置复位杆在按住第一个量的情况下复位操作触点，打开操作触点，而不用关闭报警触点，按住第二个数量用于停止，并且为了测试目的而向上提起操作触点。 复位时，联轴器帽中的运动会在焊接时将报警触点打开。 选择器可设置为复位杆的三个功能中的任何一个，（1）复位停止测试，（2）自动复位停止或（3）复位测试。
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公开(公告)号：US06661628B2
公开(公告)日：2003-12-09
申请号：US09409126
申请日：1999-09-30
IPC分类号： H01H930
摘要： A method for interrupting current is provided wherein substantially all current is conveyed through a first current carrying path in a circuit interrupter. A movable element is displaced for interruption of the current, and current is directed through both the first current carrying path and a second current carrying path in parallel with the first path The second current carrying path includes at least one variable or controllable resistance element. Both current carrying paths conduct current during interruption, with resistance of the paths driving the current to a null level. Current through the first current carrying path may be terminated prior to current through the second path. The variable resistance element draws current into the second current carrying path once an arc in the first path reaches a resistance sufficient to transition a portion of the current to both paths.
摘要翻译： 提供一种用于中断电流的方法，其中基本上所有的电流通过电路断续器中的第一载流路径被传送。 可移动元件被移位以中断电流，并且电流被引导通过与第一路径平行的第一载流路径和第二载流路径。第二载流路径包括至少一个可变或可控电阻元件。 两个电流承载路径在中断期间传导电流，其中路径的电阻驱动电流到零电平。 通过第一载流路径的电流可以在电流通过第二路径之前终止。 一旦第一路径中的电弧达到足以将电流的一部分转变到两条路径的电阻，可变电阻元件将电流吸入第二载流路径。
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4.发明授权Method and apparatus for interrupting current through deionization of arc plasma 有权通过电弧等离子体去离子来中断电流的方法和装置公开(公告)号：US06667863B1
公开(公告)日：2003-12-23
申请号：US09676547
申请日：2000-09-29
IPC分类号： H01H930
摘要： A technique is provided for enhancing performance of a circuit interrupter by deionizing arc plasma developed during an interruption event. A source material is disposed in a secondary current carrying path parallel to a primary current carrying path through the device. Upon movement of a movable contact in the primary current carrying path, current begins to flow through the source material, causing surface ablation of a material which deionizes arc plasma, resulting in greater voltage investment in the arc and more rapid extinction.
摘要翻译： 提供了一种通过去除在中断事件期间产生的电弧等离子体来提高电路断续器的性能的技术。 源材料设置在平行于穿过该装置的初级载流路径的次级载流路径中。 当可移动触点在初级载流路径中移动时，电流开始流过源材料，导致对电弧等离子体去离子的材料的表面烧蚀，导致更大的电弧投资并且更快速地消光。
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公开(公告)号：US4806897A
公开(公告)日：1989-02-21
申请号：US134811
申请日：1987-12-17
IPC分类号： H01H61/01 , H01H61/00 , H01H61/013 , H01H61/02 , H01H71/14 , H01H83/22 , H01H61/06 , H01H71/16
CPC分类号： H01H83/223 , H01H2071/109
摘要： In a plural phase overload relay, a pivot lever (12) is mounted to the ambient compensator deflector (9), and a second pivot lever (34) is mounted to both driver and follower slide bars (36 and 38) and driven thereby to engage and pivot the first lever on the ambient compensator deflector to trip a cut-out switch. The ambient compensator deflector adjusts both the three phase current trip threshold and the loss of phase current trip threshold, and also affords ambient compensator of each. A constant ratio relationship between these two thresholds is provided throughout the entire range of current trip threshold settings. The driver bar moves a first distance for three phase trip and a second shorter distance for loss of phase trip. The ratio of these distances is constant notwithstanding adjustment by the ambient compensator deflector changing the length of such distances.
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公开(公告)号：US4633210A
公开(公告)日：1986-12-30
申请号：US778639
申请日：1985-11-04
CPC分类号： H01H71/162
摘要： Improved response in an ambient temperature compensated thermal overload relay is obtained by providing a bimetal element (2) wherein the main bimetal section (4) is coupled through a reversed compensating bimetal section (6) to a heat sink mounting base (8) either directly or through a heat transfer control member (18) and placing the heater (10) that is energized by the overload current only adjacent the main bimetal section (4). With this arrangement, the main bimetal section (4) bends in the switch tripping direction and the compensating bimetal section (6) bends in the subtractive direction in response to temperature change therein to reduce the net deflection for ambient temperature compensation under normal operating conditions and gradual small overload conditions. The heater (10) provides a temperature differential between the main (4) and reverse (6) bimetal sections although the reverse bimetal section (6) is subject to some conduction temperature rise above ambient temperature due to controlled thermal conduction from the main bimetal section (4) thereto and therethrough to the heat sink (8). But under fast high overload conditions, the reverse bimetal section (6) has insufficient time to incur a substantial amount of the conduction temperature rise to afford quicker tripping of the switch (16) for improved response. The ratio of the lengths of the main and reverse bimetal sections (4,6) is set or selected for the desired compensation.
摘要翻译： 通过提供双金属元件（2）获得环境温度补偿热过载继电器中的响应，其中主双金属部分（4）通过反向补偿双金属部分（6）直接连接到散热器安装基座（8） 或通过传热控制构件（18），并且将仅由邻近主双金属部分（4）的过载电流激励的加热器（10）放置在一起。 通过这种布置，主双金属部分（4）在开关跳闸方向上弯曲，并且补偿双金属部分（6）响应于其中的温度变化而在减法方向上弯曲，以减小在正常操作条件下环境温度补偿的净偏移， 逐渐小的过载条件。 加热器（10）在主（4）和反向（6）双金属部分之间提供温度差，尽管由于主双金属部分受控的热传导，反向双金属部分（6）经受一些导热温度升高到高于环境温度 （4）并通过其散热器（8）。 但是在快速高过载条件下，反向双金属部分（6）没有足够的时间引起大量的导通温度升高，从而能够更快地跳闸开关（16）以改善响应。 为了期望的补偿，设置或选择主反向双金属部分（4,6）的长度比。
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公开(公告)号：US06674619B2
公开(公告)日：2004-01-06
申请号：US09219726
申请日：1998-12-22
IPC分类号： H01H930
摘要： A method for interrupting current is provided wherein substantially all current is conveyed through a normal current carrying path in a circuit interrupter. A movable element is displaced for interruption of the current, and a balance is struck between the normal current carrying path and a parallel alternative or transient current carrying path. The transient current carrying path includes at least one variable or controllable resistance element. The transient current carrying path presents a substantially open circuit during normal operation. The variable resistance elements have a lower resistance during initial phases of circuit interruption, favoring transition of all current from the normal current carrying path to the transient path. Thereafter, the variable resistance elements increase in resistivity, producing additional back-EMF to drive the fault current to a zero level and to limit let-through energy.
摘要翻译： 提供一种用于中断电流的方法，其中基本上所有的电流通过电路断续器中的正常载流路径传送。 可移动元件被移位以中断电流，并且在正常载流路径和平行替代或瞬时载流路径之间发生平衡。 瞬态电流承载路径包括至少一个可变或可控电阻元件。 瞬态电流承载路径在正常操作期间呈现基本上断路。 可变电阻元件在电路中断的初始阶段具有较低的电阻，有利于将所有电流从正常载流路径转换到瞬态路径。 此后，可变电阻元件的电阻率增加，产生附加的反电动势以将故障电流驱动到零电平并限制通过能量。
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8.发明授权公开(公告)号：US06631058B1
公开(公告)日：2003-10-07
申请号：US09675600
申请日：2000-09-29
IPC分类号： H01H930
摘要： A technique for reducing arc retrogression in a circuit interrupter includes providing a source material in a parallel current carrying path in the interrupter. The source material and parallel current carrying path support no current during normal operation. Upon interruption of a primary current carrying path, current flows through the source material, causing surface ablation of material which enhances the dielectric of the arc plasma, permitting more rapid entry of the arc into a dissipating structure such as a splitter plate stack. The source material transitions to a higher resistance level by heating to limit current flow during interruption.
摘要翻译： 用于减少电路断续器中的电弧倒退的技术包括在断路器中的并联载流路径中提供源材料。 源材料和平行载流路径在正常工作期间不支持电流。 当初级载流路径中断时，电流流过源材料，导致材料的表面烧蚀，这增强了电弧等离子体的电介质，从而允许电弧更快地进入散热结构例如分离板叠层。 源材料通过加热转变到更高的电阻水平，以限制中断期间的电流。
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公开(公告)号：US06665157B2
公开(公告)日：2003-12-16
申请号：US09219143
申请日：1998-12-22
IPC分类号： H01H930
CPC分类号： H01H9/42 , H01H9/36 , H01H73/045 , H01H77/108 , H01H2033/163
摘要： An electrical circuit interrupter includes a primary or normal current carrying path and a transient or alternative current carrying path. The normal current carrying path is established by a movable spanner extending between stationary contacts during normal operation. The transient current carrying path includes at least one variable resistance element which transitions from a lower resistance to a higher resistance during interruption. The transient current carrying path forms an open circuit in parallel with the normal current carrying path during normal operation. Upon interruption, the transient current carrying path is favored for the fault current, completely interrupting the normal current carrying path. The variable resistance elements increase their resistivity during this phase of operation to aid in providing high levels of back-EMF for complete interruption of fault current through the device and limitation of let-through energy.
摘要翻译： 电路断路器包括初级或正常载流路径和瞬时或替代的载流路径。 正常的载流路径由在正常操作期间在固定触点之间延伸的可移动扳手建立。 瞬态电流承载路径包括至少一个可变电阻元件，其在中断期间从较低电阻转变到较高电阻。 在正常运行期间，瞬态电流承载路径与正常载流路径平行地形成开路。 在中断时，瞬态电流承载路径对于故障电流是有利的，完全中断正常的载流路径。 可变电阻元件在此操作阶段增加其电阻率，以帮助提供高水平的反电动势，以完全中断穿过器件的故障电流和限制通过能量。
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10.发明授权Method and apparatus for extinguishing an arc through material surface ablation 有权通过材料表面烧蚀消除电弧的方法和装置公开(公告)号：US06594126B1
公开(公告)日：2003-07-15
申请号：US09676204
申请日：2000-09-29
IPC分类号： H01H930
摘要： A technique is provided for forcing greater voltage investment in an arc developed during interruption of a current carrying path. A source element is provided in a secondary current carrying path parallel to a primary path through the device. Upon interruption of the primary current carrying path, an arc is forced to migrate towards a dissipating structure under the influence of an electromagnetic field. The source material then begins to carry current and undergoes surface ablation, releasing gas which is directed towards the migrating arc. The arc is thus caused to expand further, increasing voltage investment and resulting in more rapid extinction and reduction in let-through energy.
摘要翻译： 提供了一种技术，用于在电流传输路径的中断期间产生的电弧中施加更大的电压投资。 源元件设置在平行于通过该器件的主路径的次级载流路径中。 在初级载流路径中断时，在电磁场的影响下，迫使电弧向耗散结构迁移。 源材料然后开始承载电流并进行表面烧蚀，释放指向迁移电弧的气体。 因此，电弧进一步膨胀，增加电压投资，并导致更快速的消光和通过能量的减少。
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