-
公开(公告)号：US5552979A
公开(公告)日：1996-09-03
申请号：US159394
申请日：1993-11-30
CPC分类号： H02M1/40 , G01R15/183 , G01R19/0092 , H02M3/3376 , H02M7/53803 , H02M2001/0009
摘要： Current in a line is measured by passing it through a coil, having at least one turn, linking a small high permeability core; passing a measuring current through a bucking winding around the same core; and controlling the measuring current to buck the magnetomotive force of the line current so that the core flux stays below the saturation level. The measuring current may flow through a precision resistor so that a voltage across the resistor is an accurate measure of the line current. The measuring current is obtained from a high frequency switching circuit which senses the change of flux in the core. In normal operation the circuit switches when the core flux has risen to a predetermined value, such as 60% or 80% of the saturation value. If drift or extreme transients cause the flux to reach the saturation level, a sensing and correction circuit re-establishes operation between the desired points.
摘要翻译： 通过使线圈通过具有至少一匝的线圈来连接小的高磁导率芯来测量线中的电流; 使测量电流通过围绕相同芯的绕组绕组; 并且控制测量电流以降低线电流的磁动势，使得磁心通量保持在饱和水平以下。 测量电流可能会流过精密电阻，使得电阻两端的电压可以精确测量线路电流。 测量电流是从高频切换电路获得的，该电路检测芯中磁通的变化。 在正常操作中，当磁通量上升到预定值（例如饱和值的60％或80％）时，电路切换。 如果漂移或极端瞬变导致通量达到饱和水平，则感测和校正电路将重新建立所需点之间的操作。
-
公开(公告)号：US4679016A
公开(公告)日：1987-07-07
申请号：US817213
申请日：1986-01-08
CPC分类号： H01H71/1009 , H01H71/7409 , H01H71/501
摘要： An interchangeable operating mechanism assembly for molded case circuit breakers having a detachable movable contact arm and trip unit assembly allows the same mechanism assembly to be employed across a wide range of breaker ratings. A snap-on common trip bar attachment further allows multiple-pole facility off the common interrupter mechanism assembly. The mechanism assembly is designed to maintain the operating handle in the "on" position upon the occurrence of a welded contact and prevents the mechanism from being reset.
摘要翻译： 具有可拆卸的可移动接触臂和跳闸单元组件的用于模制外壳断路器的可互换的操作机构组件允许在宽范围的断路器额定值上使用相同的机构组件。 卡扣公共跳闸杆附件进一步允许多极设备脱离公共断续器机构组件。 机构组件被设计成在焊接接触发生时将操作手柄保持在“开”位置，并防止机构复位。
-
公开(公告)号：US4698903A
公开(公告)日：1987-10-13
申请号：US869768
申请日：1986-06-02
CPC分类号： H01H71/505 , H01H2071/508 , H01H71/525 , H01H71/7409 , Y10T29/49105
摘要： A circuit breaker design and process for high speed assembly utilizes a unique secondary latch arrangement to reduce frictional forces and increase the breaker calibration test yield. The design allows for interchangability of the trip unit by first pre-assembling the arc chute cavity and operating mechanism. Arrangement of the primary and secondary latch pivots reduces the trip force for further increase in the calibration yield.
摘要翻译： 用于高速组装的断路器设计和过程利用独特的辅助闩锁装置来减小摩擦力并增加断路器校准测试产量。 该设计允许通过首先预组装电弧槽和操作机构来实现跳闸单元的可互换性。 初级和次级闩锁枢轴的布置减小了跳闸力，以进一步提高校准产量。
-
公开(公告)号：US5808532A
公开(公告)日：1998-09-15
申请号：US616061
申请日：1996-03-26
CPC分类号： H01H71/70 , H01H2071/665 , H01H3/264
摘要： A motor module for operating a circuit breaker having a front face and a switch exposed at the front face, wherein the motor module includes: a housing; a motor disposed in the housing and having a switch engaging member for operatively associating the motor with the switch; and an engaging member associated with the housing for engaging the housing with the front face of the circuit breaker, with the switch engaging member engaged with the switch, whereby the housing is mounted over the front face of the circuit breaker with the motor operatively associated with the switch.
摘要翻译： 一种用于操作断路器的电动机模块，其具有正面和在前表面露出的开关，其中所述电动机模块包括：壳体; 设置在所述壳体中并具有用于使所述马达与所述开关可操作地关联的开关接合构件的马达; 以及与所述壳体相关联的接合构件，用于将所述壳体与所述断路器的前表面接合，所述开关接合构件与所述开关接合，由此所述壳体安装在所述断路器的前表面上，所述电动机可操作地与 开关。
-
公开(公告)号：US4771254A
公开(公告)日：1988-09-13
申请号：US92981
申请日：1987-09-04
CPC分类号： H01H71/405 , H01H71/43
摘要： A magnetic trip unit for molded case circuit breakers includes a pair of U-shaped magnets opposedly arranged around a part of the circuit breaker load strap and the armature strap. Circuit current in excess of a threshold value displaces the armature strap, causing it to articulate the circuit breaker operating mechanism to interrupt the circuit current.
摘要翻译： 用于模制外壳断路器的磁脱扣单元包括一对U形磁体，该对U形磁体围绕断路器负载带的一部分和电枢带对置布置。 超过阈值的电路电流使电枢带移位，使其键合断路器操作机构以中断电路电流。
-
6.发明授权
公开(公告)号：US5162765A
公开(公告)日：1992-11-10
申请号：US814972
申请日：1991-12-23
CPC分类号： H01H71/7463 , H01H71/2409 , H01H71/2454 , H01H71/2463
摘要： Adjustment of the static position of the armature of a solenoid or relay-type structure is used to adjust the trip level. An armature stop rod extends through an opening in the structure and is bent over to adjust the length of the stop rod between the frams opening an the active part of the armature. A compact structure is achieved by winding the device coil on a plastic bobbin which provides a bearing for the armature at one end, and an extension through which the adjustment portion of the stop rod extends. This permits ready adjustment after assembly, even when the device spring is arranged around the armature inside the bobbin.
摘要翻译： 螺线管或继电器型结构的电枢的静态位置的调整用于调整跳闸电平。 电枢止动杆延伸穿过结构中的开口并被弯曲以调节在打开电枢的有效部分的开口之间的止动杆的长度。 通过将装置线圈卷绕在塑料筒管上，实现紧凑的结构，该塑料筒管在一端为衔铁提供轴承，以及延伸件，止动杆的调节部分通过该延伸部延伸。 即使装置弹簧围绕线圈架内的电枢布置，这也允许在组装之后进行准备调整。
-
公开(公告)号：US4788621A
公开(公告)日：1988-11-29
申请号：US133869
申请日：1987-12-16
IPC分类号： H01H71/66 , H01H71/02 , H01H71/74 , H01H73/00 , H01H73/06 , H01H83/12 , H01H83/20 , H02B1/08
CPC分类号： H01H83/12 , H01H71/0228 , H01H2071/086 , H01H2083/203 , H01H2083/208 , H01H71/74 , H01H83/20
摘要： An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the accessory components contained within the circuit breaker cover from the environment. A combined overcurrent trip actuator and multiple accessory unit can be field-installed within the integrated protection unit.
摘要翻译： 集成保护单元是一种断路器，包括基本的过流保护设备以及选择性的电气附件。 固定到集成保护单元盖的模制塑料附件进入盖保护包含在断路器盖中的附件部件免受环境影响。 组合的过电流跳闸执行器和多个附件单元可以现场安装在集成保护单元内。
-
公开(公告)号：US5214402A
公开(公告)日：1993-05-25
申请号：US814975
申请日：1991-12-23
CPC分类号： H01H71/526 , H01H71/1027 , H01H71/504 , H01H2071/046 , H01H71/1009 , H01H71/7463
摘要： Tripping of the poles of a multi-pole breaker requires less force from current sensing actuators, through use of a lost motion linkage including a trip link which unlatches the linkage holding one pole contact set closed before operating the inter-pole tripping elements. Preferably the breaker has a fast forcing arrangement for forcing a movable contact open under short-circuit conditions, faster than the normal contact opening spring can respond. The lost motion linkage is provided by a trip link which first releases a secondary latch to permit contact opening at normal speed, and then operates an inter-pole tripping element. Under short-circuit conditions the trip link engages the movable contact to force it open, between unlatching and engagement of the inter-pole tripping element.
-
公开(公告)号：US5185590A
公开(公告)日：1993-02-09
申请号：US814974
申请日：1991-12-23
CPC分类号： H01H9/46
摘要： Rapid extinguishing of the arc in a circuit breaker is accelerated by a booster loop which extends parallel to an arc runner, but carries current in a direction opposite to the direction of current flow in the arc runner. The booster loop and arc runner are formed from a single piece of rigid conductor material, preferably stamped to form mounting lugs and bent over into a U-shaped configuration. In a preferred embodiment, the breaker internal connections are arranged such that current flows through a thermal overload sensor when the contacts are closed, but transfers to the booster loop and arc runner after arc current termination transfers from one of the contacts to the arc runner, thus reducing short circuit current duration through the thermal sensor.
-
公开(公告)号：US4806893A
公开(公告)日：1989-02-21
申请号：US163589
申请日：1988-03-03
申请人： Roger N. Castonguay , Robert A. Morris , Richard A. Dziura , Graham A. Scott , Gregory T. DiVincenzo
发明人： Roger N. Castonguay , Robert A. Morris , Richard A. Dziura , Graham A. Scott , Gregory T. DiVincenzo
CPC分类号： H01H83/20 , H01H2083/205 , H01H71/0228 , H01H83/12
摘要： An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the accessory components contained within the integrated protection unit cover from the environment. A combined overcurrent trip actuator and multiple accessory unit can be field-installed within the integrated protection unit. The combined actuator-accessory unit includes electronic control circuitry for the accessories along with mechanical trip and reset interface components.
摘要翻译： 集成保护单元是一种断路器，包括基本的过流保护设备以及选择性的电气附件。 固定到集成保护单元盖的模制塑料附件通道盖保护集成保护单元盖中包含的附件部件免受环境影响。 组合的过电流跳闸执行器和多个附件单元可以现场安装在集成保护单元内。 组合的执行器附件单元包括用于附件的电子控制电路以及机械跳闸和复位接口组件。
-
-
-
-
-
-
-
-
-
搜索结果
13 条记录 (耗时 0.019 秒)
