| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | Circuit breaker with single test button mechanism | US10248758 | 2003-02-14 | US06731483B2 | 2004-05-04 | Henry Hall Mason, Jr.; Craig B. Williams; Cecil Rivers, Jr. |
| A method and apparatus for a circuit breaker having an arc fault detection circuit, a ground fault detection circuit, a signal indicative of an arc fault in a corresponding pole of the circuit breaker; and a trip mechanism including a pair of separable contacts. The trip mechanism is in operable communication with the ground fault detection circuitry so than in response to receiving the signal from the ground fault detection circuitry, the arc fault detection circuitry causes the ground fault detection circuitry to generate a trip signal causing the trip mechanism to separate the pair of separable contacts. | ||||||
| 142 | Circuit breaker with shunt | US09862157 | 2001-05-21 | US06728085B2 | 2004-04-27 | Tejal Navin Dudhwala; Jeffrey Scott Gibson |
| A circuit breaker that is capable of detecting ground faults as well as arc faults includes a at least a first current transformer, a line conductor extending through the current transformers, a circuit board, and a pair of sensing leads extending between the line conductor and the circuit board. In a first embodiment the line conductor is a relatively rigid line bus bar, and in a second embodiment the line conductor is a relatively flexible line shunt. The circuit board is disposed adjacent a first side of a separating wall within the circuit breaker, and the line conductor extends along the first side such that the sensing leads that extend between the line conductor and the circuit board do not pass through a plane defined by the separating wall. The circuit breaker includes a bimetal strip that is free of sensing leads that extend between the bimetal strip and the circuit board. | ||||||
| 143 | Circuit breaker with a single test button mechanism | US09683138 | 2001-11-26 | US06538862B1 | 2003-03-25 | Henry Hall Mason, Jr.; Craig B. Williams; Cecil Rivers, Jr. |
| In an exemplary embodiment of the invention, a dual test mechanism is presented for use in a circuit breaker. More specifically, the dual test mechanism includes a dual test button which comprises a single switch for testing both the AFCI and GFCI circuits of the breaker. The test mechanism includes a circuit board, which forms a part of the circuit breaker, and a test button assembly which includes a test button and signaling components which are electrically connected to the circuit board. | ||||||
| 144 | Electric circuit interrupter with fail safe mode and method | US09717380 | 2000-11-22 | US06525541B1 | 2003-02-25 | Howard S. Leopold |
| The fault circuit interrupter with fail safe mode and method can include a detection circuit for determining whether an error has occurred in an exterior circuit, and an interrupter device for stopping current flow to the exterior circuit when an error has been detected. The fault circuit interrupter can also include a fail safe mode, wherein if any of the fault circuit interrupter's key electrical and/or mechanical components malfunction or are not working, the fault circuit interrupter is incapable of being reset after a trip. | ||||||
| 145 | Current transformer and method for correcting asymmetries therein | US09455426 | 1999-12-06 | US06414579B1 | 2002-07-02 | Jerome Johnson Tiemann; Richard Dudley Baertsch |
| A current transformer for a ground fault circuit breaker used on a circuit having at least one line conductor and a neutral conductor includes a toroidal core having a circular opening defining a center point and a multi-turn winding wound on the core. A first guide member is disposed on one side of the core, and a second guide member is disposed on another side of the core. The first and second guide members each have a hole for receiving the line conductor and a hole for receiving the neutral conductor formed therein. The guide members thus position the conductors with respect to the core. Also included is a method of correcting asymmetries in the current transformer. The method includes measuring the magnitude and orientation of any asymmetries, and then altering the current transformer based on the measured magnitude and orientation of the asymmetries so as to eliminate the asymmetries. | ||||||
| 146 | Earth leakage detection device | US09732651 | 2000-12-06 | US20010022713A1 | 2001-09-20 | Miguel Ortiz Gimenez; Pere Planas Comerma |
| An earth leakage detection device (14) includes a housing (52) and an earth leakage detection circuit (114) mounted within said housing (52) for detecting earth leakage in the electrical distribution circuit. A dielectric test switch (115) is arranged between the electrically conductive strap (18) and the earth leakage detection circuit (114). Pressing the button (84) causes said dielectric test switch (115) to stop the flow of electrical current from said electrically conductive strap (18) to said earth leakage detection circuit (114) to protect the circuit (114) during dielectric testing. A lever arm (605), pivotally secured within said housing (52), causes said trip/reset mechanism (116) to actuate the circuit breaker (12) when said button (84) is pressed. The trip/reset mechanism (116) is resiliently mounted within said housing (52), independently from said transformer (182). An auxiliary switch driver (224) is attached to an auxiliary switch carrier (225) for positioning a plunger (222) of an auxiliary switch (112) mounted to the housing of the trip/reset mechanism (116). An electronic component and transformer mounting structure (118), along with a transformer mounting cover (148) form an electrically insulative barrier between said toroidal assembly (284) and said plurality of electrically conductive pass-through straps (286). | ||||||
| 147 | Device having a shaped, magnetic toroidal member and a magnetoresistive sensor for detecting low magnitude electrical currents | US849106 | 1997-06-09 | US5986444A | 1999-11-16 | Simon Powell |
| A device for detecting low magnitude electrical currents includes a generally toroidally-shaped member made of magnetic material that provides an air gap, and a magneto-resistive device in the form of a bridge located in the air gap for sensing a current flowing through a conductor that passes through the member. In order to reduce damage due to overcurrents, the member has a portion of reduced cross-sectional area to cause saturation of the member. The device can be used in an earth leakage current detector. | ||||||
| 148 | Aggregate current transformer | US498897 | 1995-07-06 | US5576921A | 1996-11-19 | Markus Brunner |
| A sum current transformer that acts on a protective switch via an amplifier has a core of a solid metallic material composed of an alloy having more than 40% nickel, so that it can be implemented mechanically solid even given small dimensions. The temperature dependency of the arrangement caused by the ohmic resistance of the winding is compensated by the diminishing eddy currents in the core given increasing temperature, so that the smallest dimensions can be realized for the aggregate current transformer. | ||||||
| 149 | Lead wire DC current sensor with saturated detecting core | US361545 | 1994-12-22 | US5517104A | 1996-05-14 | Makoto Kawakami |
| A DC current sensor, comprising a detecting core consisting of an annular soft magnetic material having a hollow portion extending in a circumferential direction within the core; an excitation coil wound and disposed in a circumferential direction in the hollow portion; a detecting coil toroidally wound around the detecting core; a lead wire through which a DC current for non-contact detection flows, and extended through the center of the detecting core; an AC current supply for applying current to the excitation coil for periodically magnetically saturating the entire detecting core in both the circumferential and a direction perpendicular thereto, whereby the magnetic flux produced in the detecting core can be modulated according to the DC current flowing through the lead wire and being detected upon excitation of the excitation coil; and the detecting coil producing an electromotive force having a frequency twice the excitation current for detecting the DC current flowing through the lead wire. | ||||||
| 150 | Insulating barriers for circuit breaker bus bars and a ground fault circuit breaker incorporating same | US943796 | 1992-09-11 | US5291165A | 1994-03-01 | Michael J. Whipple; Joseph P. Fello |
| Insulating barriers for flat, confronting C-shaped bus bars with facing, depending end portions are integrally formed with a pair of confronting C-shaped insulating members conforming to the shape of the bus bars and joined by a pair of projections extending between and electrically insulating the facing, depending end portions from each other. Preferably, the insulating barrier is formed with flat linear sections joining the confronting C-shaped members which are then folded to form the projections. The C-shaped insulating members have edge extensions covering the edges of the bus bars. Grippers formed integrally with the edge extensions snap under the bus bars to secure the insulating members in place. | ||||||
| 151 | Metallic glasses having a combination of high permeability, low coercivity, low ac core loss, low exciting power and high thermal stability | US807308 | 1991-12-13 | US5284528A | 1994-02-08 | Ryusuke Hasegawa; Gordon Fish |
| Metallic glasses having high permeability, low coercivity, low ac core loss, low exciting power, and high thermal stability are disclosed. The metallic glasses are substantially completely glassy and consist essentially of about 71 to 79 atom percent iron, about 1 to 6 atom percent of at least one member selected from the group consisting of chromium, molybdenum, tungsten, vanadium, niobium, tantalum, titanum, zirconium and hafnium, about 12 to 24 atom percent boron, about 1 to 8 atom percent silicon, 0 to about 2 atom percent carbon, plus incidental impurities, the total of boron, silicon and carbon present ranging from about 18 to 28 atom percent. The alloy is heat treated at a temperature and for a time sufficient to achieve stress relief without inducing precipitation of discrete particles therein. Such a metallic glass alloy is especially suited for use in devices requiring high response to weak magnetic fields, such as ground fault interruptors and current/potential transformers. | ||||||
| 152 | Wire wound core | US831427 | 1992-02-05 | US5235488A | 1993-08-10 | Stuart Koch |
| Disclosed is a helically wound core of ferrous material used as a differential current sensor core in the ground fault sensor of a ground fault interrupter circuit. The ferrous material comprises a single strand of wire which is wound in helical fashion to create a tubular shaped core comprising a series of wire loops (all part of the single strand) parallel to each other and running the length of the tubular shape. The core is placed around a pair of current carrying lines to be monitored for ground faults (one line leading to and one line leading away from the power source) to interact with the magnetic fields of the lines. Toroidally wound leads wrapped around the wire core act as a secondary and are connected to a ground fault interruption circuit to shut off the power to the conducting lines in the event that the sensor detects a difference in current in the lines. By utilizing wire as the core material, the amount of surface area can be greatly increased over the prior art cores without increasing the cross-sectional area (and, therefore, the overall size) of the core. | ||||||
| 153 | Metallic glasses having a combination of high permeability, low coercivity, low ac core loss, low exciting power and high thermal stability | US624485 | 1990-12-06 | US5110378A | 1992-05-05 | Ryusuke Hasegawa; Gordon Fish |
| Metallic glasses having high permeability, low coercivity, low ac core loss, low exciting power, and high thermal stability are disclosed. The metallic glasses are substantially completely glassy and consist essentially of about 71 to 79 atom percent iron, about 1 to 6 atom percent of at least one member selected from the group consisting of chromium, molybdenum, tungsten, vanadium, niobium, tantalum, titanium, zirconium and hafnium, about 12 to 24 atom percent boron, about 1 to 8 atom percent silicon, 0 to about 2 atom percent carbon, plus incidental impurities, the total of boron, silicon and carbon present ranging from about 18 to 28 atom percent. The alloy is heated treated at a temperature and for a time sufficient to achieve stress relief without inducing precipitation of discrete particles therein. Such a metallic glass alloy is especially suited for use in devices requiring high response to weak magnetic fields, such as ground fault interruptors and current/potential transformers. | ||||||
| 154 | Current transformer mounting mechanism for circuit breaker | US706186 | 1991-05-28 | US5091711A | 1992-02-25 | Kojo Hirotsune |
| Current transformer mounting mechanism which mounts a current transformer having a core on a circuit breaker to diminish impact caused by switching operation comprising: at least one substantially U-shaped fitting board having curved portions at both ends thereof; at least one setscrew for mounting said fitting board to the core of the current transformer; and a current transformer mounting portion having opposing walls, each wall being provided with a shoulder where the fitting board being fixed; the current transformer being mounted to the current transformer mounting portion by inserting the fitting board to the current transformer mounting portion. The fitting board is preferably provided with embossed tabs at curved portions thereof. | ||||||
| 155 | Ground fault current protective device | US280178 | 1988-12-05 | US4937706A | 1990-06-26 | Pierre Schueller; Gilbert Garnier |
| A ground fault trip unit of the three-pole type, comprises a fourth conductor passing through the differential transformer. The fourth conductor is connected to terminals located on a different face from that of the terminals of the other three conductors. The same ground fault trip unit can be associated with a three-pole breaking device, in which case the fourth conductor is not used, and with a four-pole device whose fourth pole is connected to the fourth conductor of the ground fault trip unit. | ||||||
| 156 | Method of forming signal processor module for ground fault circuit breaker | US916966 | 1986-10-08 | US4702002A | 1987-10-27 | Robert A. Morris; Paul T. Rajotte |
| The neutral excitation and differential current transformers of a ground fault circuit breaker are arranged for automated assembly onto the signal processor circuit board to complete the signal processor module prior to insertion within the ground fault circuit breaker housing. Electrical interconnection between the transformers is made by a unitary conducting strap having means therein for receiving the circuit neutral conductor. The completely assembled signal processor module is connected with the circuit breaker components by means of a single wire. | ||||||
| 157 | Signal processor module for ground fault circuit breaker | US725610 | 1985-04-22 | US4641216A | 1987-02-03 | Robert A. Morris; Paul T. Rajotte |
| The neutral excitation and differential current transformers of a ground fault circuit breaker are arranged for automated assembly onto the signal processor circuit board to complete the signal processor module prior to insertion within the ground fault circuit breaker housing. Electrical interconnection between the transformers is made by a unitary conducting strap having means therein for receiving the circuit neutral conductor. The completely assembled signal processor module is connected with the circuit breaker components by means of a single wire. | ||||||
| 158 | Differential transformer core for pulse currents | US247439 | 1981-03-25 | US4366520A | 1982-12-28 | Guenter B. Finke; Bao-Min Ma |
| A plurality of relatively high magnetic permeability strips are interleaved to form layers of a closed loop differential transformer core. Although the material of each layer by itself may have a relatively square hysteresis loop, the core formed of a plurality of interleaved layers of such material has a substantially more rounded hysteresis loop. Such a core can advantageously be used in a ground fault interruption circuit in which power leads pass through a central opening in the core to form a primary winding and a secondary winding wound on the core may have a capacitor connected in circuit therewith to complete a resonant circuit. By virtue of its more rounded hysteresis loop, the core, in cooperation with the capacitor, permits the establishment of a resonant current in the secondary circuit which is sufficient to trip a circuit breaker after a few cycles of operation of the alternating current or pulsed unidirectional primary current when a small differential current exists between the power leads as a result of a ground fault. | ||||||
| 159 | Load break switch with built-in ground fault sensing | US290370 | 1981-08-05 | US4363063A | 1982-12-07 | John W. Erickson |
| A plural phase high current low voltage load break switch with built-in ground fault sensing comprises an insulator base and a plurality of individual phase circuits mounted on and extending across the base in parallel spaced relation to each other, each phase circuit including, in series, an input connector, a fixed switch contact, a movable switch contact, a fuse, and an output conductor; a neutral conductor is mounted on and extends across the base in parallel spaced relation to the phase circuits. A switch operator mechanism mounted on the base is connected to all of the movable switch contacts for opening and closing these contacts simultaneously; that mechanism includes an electrically operated trip actuator for actuating the operator mechanism to open the switch contacts. A zero sequence ground fault sensor coil is disposed in encompassing relation to all of the phase circuits and the neutal conductor; the sensor coil is aligned with the movable switch contacts. A control relay is electrically connected to the ground fault sensor coil and to the trip actuator for energizing the trip actuator in response to the sensing of a ground fault condition by the sensor coil. | ||||||
| 160 | Differential transformer | US45867 | 1979-06-06 | US4287545A | 1981-09-01 | Ferdy Mayer |
| For optimizing the manufacturing cost of the magnetic torus of a differential transformer, the volume is reduced in that the free volume of the central aperture is fully filled: only one turn for each primary conductor, the section of which is reduced, the adjacent parts of larger section forming heat sinks, the central part of the conductors having the form of circular sectors. An important saving is secured on the most expensive part of the relay. | ||||||
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