公开(公告)号：US5446682A

公开(公告)日：1995-08-29

申请号：US215437

申请日：1994-03-21

Applicant: Donald R. Janke ,  James A. Rodrian

Inventor： Donald R. Janke ,  James A. Rodrian

IPC: G01R27/18 ,  G01R31/12 ,  G01R35/00

CPC classification number: G01R27/18 ,  G01R31/1272

Abstract: A line isolation monitor (LIM) indicates the maximum hazard current of an ungrounded polyphase power distribution system. The LIM is microcontroller based and continuously monitors a fault impedance for each phase of the distribution system. The fault impedance is determined by the LIM by injecting a continuous sine wave measurement current into a ground terminal to generate a measurement voltage across the fault impedance. Using the measurement voltage and current, the LIM calculates the fault impedance and, using this impedance, calculates the hazard current based on the maximum line to ground voltage of the ungrounded system. The LIM has means for self-calibration and self-testing while on-line and during a power-up sequence. These tests compare measured and theoretical values of circuit parameters of voltage and current sensing circuits. During this calibration check, the monitoring circuits of the LIM are removed from the isolated system and known voltage and current signals are injected internally to the monitoring circuits to verify the component parameters. If the calibration parameters are outside tolerances by a first, low level, the LIM annunciates a warning, but will continue to monitor the hazard current. If the deviation is greater than a second, higher level, the LIM will indicate a fault and remove itself from service.

Abstract translation: 线路隔离监视器（LIM）表示未接地多相配电系统的最大危险电流。 LIM是基于微控制器的，并且连续地监测分配系统的每个阶段的故障阻抗。 故障阻抗由LIM通过将连续的正弦波测量电流注入接地端子来产生故障阻抗上的测量电压来确定。 使用测量电压和电流，LIM计算故障阻抗，并使用该阻抗，根据未接地系统的最大线对地电压来计算危险电流。 LIM具有自动校准和自检功能，可在线和上电时进行。 这些测试比较了电压和电流检测电路电路参数的测量值和理论值。 在此校准检查期间，LIM的监控电路从隔离系统中移除，并将已知的电压和电流信号内部注入监控电路，以验证组件参数。 如果校准参数超出了第一个低水平的公差，则LIM会通知警告，但会继续监视危险电流。 如果偏差大于一秒，则较高级别，LIM将指示故障并将其自身从服务中移除。

公开(公告)号：US5399095A

公开(公告)日：1995-03-21

申请号：US207868

申请日：1994-03-08

Applicant: Rodney J. West ,  Lisa C. Simmering

Inventor： Rodney J. West ,  Lisa C. Simmering

IPC: H01R31/06 ,  H01B7/04 ,  H01R4/20 ,  H01R9/03 ,  H01R13/622 ,  H01R25/16 ,  H01R31/00 ,  H02G3/00 ,  H02G3/04 ,  H02G5/06 ,  H02G9/06 ,  H01R4/38

CPC classification number: H01R31/00 ,  H01R25/162 ,  H02G3/00 ,  H02G3/0481 ,  H02G5/061 ,  H02G9/06 ,  H01R13/622 ,  H01R23/27 ,  H01R4/20 ,  H01R9/03

Abstract: A device for resolving axial and angular misalignments between electrical conductors of adjacent sections of a pre-bussed rigid conduit electrical feeder system. The variable phase positioning device includes a flexible housing with an end piece attached to each end. A number of flexible electrical conductors are enclosed within the housing. Each conductor is enclosed in an electrically insulating sheath. A substantially rigid terminal is fixedly attached to each end of each conductor. At each end of the housing the terminals are loosely captivated within a terminal support such that each terminal can rotate freely. The terminal supports are made from an electrically insulating material. A retaining sleeve is loosely received over each terminal support and attached to the end piece in a manner that permits the terminal supports to rotate freely within the retaining sleeve.

Abstract translation: 用于解决预先布置的刚性导管馈电系统的相邻部分的电导体之间的轴向和角度不对准的装置。 可变相位定位装置包括具有连接到每个端部的端部件的柔性壳体。 多个柔性电导体封装在壳体内。 每个导体封装在电绝缘护套中。 大体上刚性的端子固定地连接到每个导体的每一端。 在壳体的每一端，端子松动地固定在端子支撑件内，使得每个端子可以自由旋转。 端子支架由电绝缘材料制成。 保持套被松动地容纳在每个端子支撑件上并以允许端子支撑件在保持套筒内自由旋转的方式附接到端部件上。

公开(公告)号：US5396210A

公开(公告)日：1995-03-07

申请号：US32954

申请日：1993-03-17

Applicant: Dilip R. Purohit ,  Timothy A. Soter ,  Jeewan Puri

Inventor： Dilip R. Purohit ,  Timothy A. Soter ,  Jeewan Puri

IPC: H01F27/26 ,  H01F27/32 ,  H01F41/00 ,  H01F27/08

CPC classification number: H01F27/263 ,  H01F27/322 ,  H01F27/323 ,  H01F27/327 ,  H01F41/005 ,  H01F2027/328

Abstract: A dry type transformer has an iron core, high voltage windings embedded in cast resin, and low voltage windings resin encapsulated. The low voltage winding is constructed with flexible sheet conductors. Insulating material includes an apparatus to secure the windings in place during a vacuum and pressure resin impregnation process. The result is a coil that exhibits high short circuit protection due to the tightly bond conductors comparable to completely resin encased molded transformers at a substantially reduced cost.

Abstract translation: 干式变压器具有铁芯，嵌入铸塑树脂的高压绕组和封装的低压绕组树脂。 低压绕组由柔性片导体构成。 绝缘材料包括在真空和压力树脂浸渍过程期间将绕组固定就位的装置。 结果是由于紧密结合的导体可以以完全树脂封装的模制变压器相当于以大大降低的成本来表现出高的短路保护。

公开(公告)号：US5386096A

公开(公告)日：1995-01-31

申请号：US173835

申请日：1993-12-23

Applicant: Paul R. Buda ,  Mark A. Hinton

Inventor： Paul R. Buda ,  Mark A. Hinton

IPC: B23K11/25 ,  B23K11/24

CPC classification number: B23K11/257

Abstract: A weld controller employs a stepper program for increasing heat boost in one percent increments or steps to provide compensation for contact tip wear. The weld controller acquires weld current data in the form of current samples for each step to create a characteristic curve or nominal current profile for the stepper program. Subsequent operations of the weld control utilize high and low current limit thresholds that track the nominal current profile. The thresholds can be defined as a fixed offset from the profile or as a percentage of the profile at each step of the stepper program. This allows the use of current limits to be established in close proximity to the nominal weld current at all times, enabling the use of tighter tolerances.

Abstract translation: 焊接控制器采用步进程序，以1％的增量或步骤增加热量提升，以提供接触尖端磨损的补偿。 焊接控制器以每个步骤的当前采样形式获取焊接电流数据，以创建步进程序的特性曲线或标称电流曲线。 焊接控制的后续操作利用跟踪标称电流曲线的高和低电流限制阈值。 阈值可以被定义为从轮廓的固定偏移量，或在步进程序的每个步骤中定义为轮廓的百分比。 这允许在任何时候使用电流极限建立在非常接近标称焊接电流的情况下，使得能够使用更严格的公差。

公开(公告)号：US5369563A

公开(公告)日：1994-11-29

申请号：US998109

申请日：1992-12-29

Applicant: Frank D. Miller

Inventor： Frank D. Miller

IPC: H02M7/5387 ,  H03K17/0412 ,  H03K17/687 ,  H02H7/122

CPC classification number: H02M7/5387 ,  H03K17/04123 ,  H03K17/6871

Abstract: A power output driver circuit that converts a DC voltage into an AC voltage includes a gate driver circuit for turning on electronic switching devices. The gate driver circuit allows for a rapid turn-off of the conducting electronic switching device by having a first conduction path for the gate drive signals that turn-on the switching devices and a second conduction path that rapidly discharges stored energy in the gate/drain capacitance of the switching devices, resulting in a faster turn-off time. A transistor in the gate circuit shunts the stored charge directly to the source terminal of the switching device.

Abstract translation: 将DC电压转换为AC电压的电力输出驱动电路包括用于接通电子开关器件的栅极驱动电路。 栅极驱动器电路通过具有用于导通开关器件的栅极驱动信号的第一导电路径和快速放电栅极/漏极中存储的能量的第二导电路径来允许导通电子开关器件的快速关断 开关器件的电容，导致更快的关断时间。 门电路中的晶体管将存储的电荷直接分流到开关器件的源极端。

公开(公告)号：US5359161A

公开(公告)日：1994-10-25

申请号：US2009

申请日：1993-01-08

Applicant: Thomas C. Leach ,  Steven A. DeCook

Inventor： Thomas C. Leach ,  Steven A. DeCook

IPC: H01H1/22 ,  H01H33/02 ,  H01H1/50

CPC classification number: H01H1/225

Abstract: The invention provides a spring exerting a non-linear force between a contact carrier and a contact blade in a circuit interrupter. The inventive spring includes at least one elongated cantilever. The length of the cantilever has the shape of an arch made with a non-uniform angle and is formed from an elastic material. The cantilever is supported at one end against the carrier with the length of the cantilever positioned parallel to the carrier and the opposite end of the cantilever abutting the contact blade so that the carrier supports more of the length of the cantilever as the displacement between the carrier and the contact blade decreases.The invention also includes a method of operating a circuit interrupter by non-uniformly increasing the force exerted against a movable contact as it engages a stationary contact to complete a circuit.

Abstract translation: 本发明提供了一种在电路断续器中的触点支架和触头片之间施加非线性力的弹簧。 本发明的弹簧包括至少一个细长悬臂。 悬臂的长度形成为具有不均匀角度的拱形并由弹性材料形成。 悬臂被支撑在一端抵靠载体，其中悬臂的长度平行于载体定位，并且悬臂的相对端邻接接触片，使得载体支撑更多的悬臂长度，因为载体之间的位移 并且接触叶片减小。 本发明还包括一种通过不间断地增加施加在可动触头上的力而使电路断续器工作的方法，因为它接合固定触点以完成电路。

公开(公告)号：US5341273A

公开(公告)日：1994-08-23

申请号：US814983

申请日：1991-12-23

Applicant: Jeffrey O. Sharp ,  Michael R. Harris ,  Robert J. Cooper ,  Steve M. Ledbetter ,  Ronald H. Reed ,  Ronald W. Chaffin

Inventor： Jeffrey O. Sharp ,  Michael R. Harris ,  Robert J. Cooper ,  Steve M. Ledbetter ,  Ronald H. Reed ,  Ronald W. Chaffin

IPC: H02B1/056 ,  H02B1/40 ,  H02B1/26

CPC classification number: H02B1/40 ,  H02B1/056

Abstract: An electrical distribution load center consists of a non-conductive enclosure and a circuit breaker bus bar support panel that are interconnected by interlock members that can be snap-fitted to secure the two panels to each other. The support panel also has a latch member so that the bus bars can be mounted onto the panel in a heat-staking, insert-molded or snap-fit arrangement. The support panel also has elements for locking the circuit breakers onto the panels in conducting contact with the bus bars. The enclosure and the support panel are enclosed by a non-metallic trim panel that has a non-metallic door hinged thereto and which carries a latch for latching the door to the trim panel.

Abstract translation: 配电负载中心由非导电外壳和断路器母线支撑面板组成，它们通过互锁构件相互连接，互锁构件可以卡扣配合以将两个面板彼此固定。 支撑面板还具有闩锁构件，使得母线可以以热铆接，嵌入成型或卡扣配合布置安装到面板上。 支撑面板还具有用于将断路器锁定在面板上以与母线接触的元件。 外壳和支撑面板由非金属装饰板包围，该非金属装饰面板具有铰链到其上的非金属门，并且具有用于将门闩锁到装饰板的闩锁。

公开(公告)号：US5327349A

公开(公告)日：1994-07-05

申请号：US48155

申请日：1993-04-15

Applicant: Stephen A. Hoste

Inventor： Stephen A. Hoste

IPC: G05B19/418 ,  G07C3/04 ,  G06F15/46

CPC classification number: G07C3/04 ,  G05B19/41875 ,  Y02P90/14 ,  Y02P90/18 ,  Y02P90/22

Abstract: A method and apparatus records downtime and the probable cause of the downtime of a network of programmable logic controllers and other microprocessor based devices for controlling of a manufacturing process. The method and apparatus also records the total downtime by separate causes and a total downtime of all causes encountered. The apparatus further records the number of times each cause occurred and a total number of all causes encountered. A graphical display provides a visual presentation of the number of times each cause occurred and the total downtime for each cause that occurred in Pareto chart form. The method provides for prioritizing alarms associated with the cause of a downtime and the apparatus has means for deciding which alarm notification, based on the alarm priority and therefore, its corresponding cause, recorded the most number of times it caused a downtime.

Abstract translation: 一种方法和设备记录停机时间以及可编程逻辑控制器和其他基于微处理器的设备网络的停机的可能原因，以控制制造过程。 该方法和装置还记录了总停机时间的单独原因以及遇到的所有原因的总停机时间。 该装置还记录每个原因发生的次数和遇到的所有原因的总数。 图形显示提供每个原因发生次数的可视化显示以及以帕累托图形式发生的每个原因的总停机时间。 该方法提供了与停机时间相关联的警报的优先级，并且该装置具有用于基于警报优先级以及因此其相应原因决定哪个警报通知记录了导致停机时间的最多次的装置。

公开(公告)号：US5322982A

公开(公告)日：1994-06-21

申请号：US878782

申请日：1992-05-05

Applicant: Ricky D. Leger ,  Russell Cox

Inventor： Ricky D. Leger ,  Russell Cox

IPC: H01H5/06 ,  H01H9/10 ,  H01H9/22 ,  H01H9/28 ,  H01H9/34 ,  H01H9/52

CPC classification number: H01H9/10 ,  H01H5/06 ,  H01H9/223 ,  H01H9/28 ,  H01H9/342 ,  H01H9/52

Abstract: The present invention relates to a fusible switch for use in a multiphase circuit. The switch includes an operating mechanism which is secured to the enclosure of the switch and provides for a handle to operate the opening and closing of switch contacts. Movement of the handle stores energy in the operating mechanism which is subsequently released in a quick motion just as the switch contact is to be opened or closed. The switch also provides for heat sinks and means for venting the enclosure to dissipate the heat created from the higher voltage and greater current density carried by this improved switch.

Abstract translation: 本发明涉及一种用于多相电路的熔断器。 开关包括固定到开关的外壳上的操作机构，并提供一个操作开关触点的打开和关闭的把手。 手柄的移动将能量存储在操作机构中，随着开关触点打开或关闭，随后释放的快速运动。 该开关还提供散热器和用于排出外壳的装置，以消散由该改进开关承载的更高电压和更大的电流密度所产生的热量。

公开(公告)号：US5307243A

公开(公告)日：1994-04-26

申请号：US969643

申请日：1992-10-30

Applicant: Jeffrey O. Sharp ,  Richard Korthauer

Inventor： Jeffrey O. Sharp ,  Richard Korthauer

IPC: H02B1/20

CPC classification number: H02B1/202 ,  Y10S439/942

Abstract: The present invention provides an electrically-insulating wire management assembly for a metallic electrical distribution device housing. The assembly includes at least one slot having a generally v-shaped length formed at an angle through the cross-section of the assembly's body. Each slot is arranged to receive a flexible electrical conductor through one open side edge of the body and guide the conductor entering through the outer face of the body, across the length of the slot, and exiting through the inner face of the body into the housing interior. The angle of each slot is adapted to provide an interference fit with the conductor. The assembly includes means for securing the assembly to the side wall of the housing in a position allowing the conductor to enter the housing through the assembly. The present invention also includes an electrical distribution device housing adapted for connecting with a wire management assembly. The housing including at least one knock-out or cut-out integrally formed in at least one side wall. Each knock-out or cut-out extends downwardly from the upper edge of the side wall and corresponds in shape to the wire management assembly.

Abstract translation: 本发明提供一种用于金属配电装置壳体的电绝缘线管理组件。 该组件包括至少一个槽，其具有通过组件本体的横截面以一定角度形成的大致V形长度。 每个槽被布置成通过主体的一个开放侧边缘接收柔性电导体，并引导导体穿过主体的外表面穿过槽的长度进入，并穿过主体的内表面进入外壳 室内。 每个槽的角度适于提供与导体的过盈配合。 组件包括用于将组件固定到壳体的侧壁的装置，该位置允许导体通过组件进入壳体。 本发明还包括适于与线管理组件连接的配电装置壳体。 所述壳体包括至少一个在至少一个侧壁中整体形成的脱模或切口。 每个脱模或切口从侧壁的上边缘向下延伸，并且形状对应于线管理组件。