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| Number | Title | Issue Date |
| 7440251 | Multi-path switching configuration A multi-path switching configuration provides independent switching of multiple circuit paths. In a preferred arrangement, a plurality of circuit interrupters have one end connected in common with each other and a second end providing a circuit path connection. An o... | 10/21/2008 |
| 7391597 | Switchgear with arc-resistant features An arrangement capable of being assembled with either an existing installed electrical equipment enclosure having an access door or during the fabrication and assembly of such an electrical equipment enclosure that increases the arc-resistant capabilities and charac... | 06/24/2008 |
| 7352265 | Manual trip control method and arrangement for multiple circuit interrupters A manual trip control method and arrangement is provided to manually trip a plurality of circuit interrupters. Specifically, where the circuit interrupters include magnetic-actuator-driven vacuum interrupters including permanent magnets that hold the contacts of the... | 04/01/2008 |
| 7314021 | Operation indicator An operation indicator is provided to indicate the open/closed status of device, e.g. a circuit interrupter operable between open and closed operating positions. The operation indicator includes two indicator members having cooperating interleaved or interlaced cons... | 01/01/2008 |
| 7279654 | Current sensor A current sensor for installation on a conductor without breaking the conductor may include an insulating base having a conductor supporting portion and a conductive coil disposed within an outer surface of the insulating base. A magnetically permeable conductor ret... | 10/09/2007 |
| 7253603 | Current sensor arrangement A current sensor is provided including a Rogowski coil in an assembly that is easily positioned about a conductor, e.g. without cutting the line or deenergizing the line. In one arrangement, the Rogowski coil is formed about a split helical structure such that the e... | 08/07/2007 |
| 7230411 | Voltage sensing apparatus for medium-voltage electrical power distribution systems A molded voltage sensor is provided that achieves excellent sensing accuracy over a wide temperature range by molding promary and secondary capacitances are of a voltage divider into a solid dielectric material and wherein th e capacitances are preferably fabricated... | 06/12/2007 |
| 7223928 | Switch with improved protection from ice conditions An arrangement is provided to protect an electrical switch from the deleterious effects of ice formation that inhibits switch operation. In a preferred arrangement, an ice shield is provided that protects the current-carrying contact structures and other operative e... | 05/29/2007 |
| 7122917 | Control arrangement and isolated power supplies for power electronic system A control method and arrangement is provided that monitors the condition and operating parameters of a power electronic system having power electronic devices to optimize operation of the power electronic system. Further, electrically isolated power supplies to indi... | 10/17/2006 |
| 7026560 | Separable, flexible electrical connection arrangement A separable, flexible connection arrangement is provided for connection of two conductors. In one arrangement, the separable, flexible connection arrangement is utilized to provide an externally removable bushing for connecting an electrical component located within... | 04/11/2006 |
| 6963475 | Monitoring and control for power electronic system A control method and arrangement that monitors the condition and operating parameters of a power electronic system having power electronic devices and responds to various detected abnormalities to optimize operation of the power electronic system. The arrangement in... | 11/08/2005 |
| 6950764 | Arrangements to detect and respond to disturbances in electrical power systems A control arrangement and method is provided for detecting and responding to disturbances in electrical power systems. In a preferred arrangement, an integration is initiated that is based on a comparison of actual voltage of a source and a reference voltage. When t... | 09/27/2005 |
| 6944004 | Arrangements to detect and respond to disturbances in electrical power systems A control arrangement and method is provided for detecting and responding to disturbances in electrical power systems. In a preferred arrangement, an integration is initiated that is based on a comparison of actual voltage of a source and a reference voltage. When t... | 09/13/2005 |
| 6943313 | Rotating arc fault-current interrupter A rotating arc fault-current interrupter, also known as an arc spinner interrupter, is provided that establishes an easily visible open gap via a movable blade member having a first portion for engaging a stationary main contact and a second portion formed by an arc... | 09/13/2005 |
| 6941233 | Arrangements to detect and respond to disturbances in electrical power systems A control arrangement and method is provided for detecting and responding to disturbances in electrical power systems. In a preferred arrangement, an integration is initiated that is based on a comparison of actual voltage of a source and a reference voltage. When t... | 09/06/2005 |
| 6922087 | Control arrangement for power electronic system A control arrangement and method is provided that monitors the condition and operating parameters of a power electronic system having power electronic devices and responds to various detected abnormalities via appropriate action to optimize operation of the power el... | 07/26/2005 |
| 6922132 | Fuse cutout with improved dropout performance An improved fuse cutout is provided of the type having a fuse tube assembly that moves to a dropout position upon operation in response to a fault current or other overcurrent. These types of fuse cutouts include the pivotal mounting of the fuse tube assembly with r... | 07/26/2005 |
| 6917186 | Monitoring and control for power electronic system A control method and arrangement that monitors the condition and operating parameters of a power electronic system having power electronic devices and responds to various detected abnormalities to optimize operation of the power electronic system. The arrangement in... | 07/12/2005 |
| 6867679 | Mounting for circuit interrupter A mounting for a circuit interrupter is provided that facilitates the easy removal and insertion of the circuit interrupter. The mounting includes upper and lower terminal and support arrangements that cooperate with upper and lower device mounting studs of a circui... | 03/15/2005 |
| 6777043 | Fuse tube and method of manufacture thereof An arc-quenching composition is provided including a filler, a fiber and a binder. Preferably, the filler includes an arc-quenching compound such as melamine. The binder includes a thermosetting resin to facilitate forming of the arc-quenching composition into an ar... | 08/17/2004 |
| 6767036 | Gas tight housing joint using an interference fit with adhesive A method and arrangement is provided to form a gas-tight joint between two housing portions, e.g. between an end flange and a tubular pole-unit housing for a circuit interrupter or an insulating support column. The joint is formed via a heat-shrink process to provid... | 07/27/2004 |
| 6720857 | High voltage fuse A fuse is provided that is suitable for operation in unusual environments and includes an operation indicator that is simple and reliable. A movable arcing tube is released during operation. As the arcing tube moves outside the fuse assembly, a latching spring moves... | 04/13/2004 |
| 6714395 | Method for detecting faults internal to a distribution equipment configuration System and equipment protection is provided for an electrical power distribution system via one or more protection arrangements for detecting and responding to faults in electrical power distribution systems. The one or more protection arrangements detect whether fa... | 03/30/2004 |
| 6697240 | Method and apparatus for automated reconfiguration of an electric power distribution system with enhanced protection Method and apparatus is disclosed for controlling an electric power distribution system including the use and coordination of information conveyed over communications to dynamically modify the protection characteristics of distribution devices (including ... | 02/24/2004 |
| 6696658 | Circuit interrupter and operating mechanism therefor A single-pole circuit interrupter is provided that includes a sealed housing containing a pressurized gas, relatively movable contacts and an operating mechanism for operating the relatively movable contacts. The operating mechanism is responsive to a low... | 02/24/2004 |
| 6674027 | Operating arrangement for mechanism An operating arrangement is provided for a mechanism or the like, e.g. an operating mechanism for a circuit interrupter for electrical power transmission and distribution systems where the operating mechanism operates on stored energy and requires a recha... | 01/06/2004 |
| 6668232 | Arrangements to detect and respond to disturbances in electrical power systems A control arrangement and method is provided for detecting and responding to disturbances in electrical power systems. In a preferred arrangement, an integration is initiated that is based on a comparison of actual voltage of a source and a reference volt... | 12/23/2003 |
| 6667601 | Control arrangement and method for power electronic system A control arrangement and method is provided that monitors the condition and operating parameters of a power electronic system having power electronic devices and responds to various detected abnormalities via appropriate action to optimize operation of t... | 12/23/2003 |
| 6646216 | Operating mechanism with improved input drive arrangement for switches and circuit interrupters A compact operating mechanism for switches and circuit interrupters provides improved input drive arrangement and more particularly to a quick-make quick-break operating mechanism for electrical circuit interrupters, i.e. load-interrupter switches and fau... | 11/11/2003 |
| 6636101 | Control arrangement and method for electronic device A control arrangement and method is provided for electronic devices in which an electronic switch is maintained in a conducting state at all times other than when it is desired to render the electronic switch nonconducting. In a specific embodiment, a lat... | 10/21/2003 |
| 6628494 | Protective device and system A multi-pole protective device and system for electrical power transmission and distribution systems is provided that operates a multi-pole tripping system at ground level from a line-potential tripping device contained within each pole of the multi-pole ... | 09/30/2003 |
| 6601002 | Arrangements to detect and respond to disturbances in electrical power systems A control arrangement and method is provided for detecting and responding to disturbances in electrical power systems. In a preferred arrangement, an integration is initiated that is based on a comparison of actual voltage of a source and a reference volt... | 07/29/2003 |
| 6538422 | Voltage sensor bushing assembly with integral capacitance screen A voltage sensing apparatus includes an output for a voltage tap point that is useful in representing the voltage on a conductor that passes through the voltage sensing apparatus. The voltage sensing apparatus also performs the function of a separable ins... | 03/25/2003 |
| 6504696 | Control arrangement and method for power electronic system A control arrangement and method is provided that monitors the condition and operating parameters of a power electronic system having power electronic devices and responds to various detected abnormalities via appropriate action to optimize operation of t... | 01/07/2003 |
| 6486426 | Contact arrangement for electrical power distribution switch or the like A contact arrangement is provided, e.g. of the type that functions as a wiping contact for a moving contact such as a pivotally mounted switch blade in an electrical power distribution switch. The contact arrangement in an illustrative embodiment includes... | 11/26/2002 |
| 6483067 | Electrical power distribution switch An electrical power distribution switch includes an operating member that carries a first plurality of spaced switch contacts and a support arrangement for pivotally supporting the operating member. One of the ends of the operating member includes a circu... | 11/19/2002 |
| 6456025 | Motor operator for over-head air break electrical power distribution switches A motor operator for an overhead power switch is disclosed including a microcontroller, a unique and powerful array of well-integrated sensors, a motor and drive developing substantial torque and speed and coupled to a switch actuator and responsive to th... | 09/24/2002 |
| 6429393 | Current transfer arrangement for circuit interrupter A current transfer arrangement is provided for a circuit interrupter that provides support for the contacts of the circuit interrupter and also provides current transfer between the contacts of the circuit interrupter and the external circuit terminal con... | 08/06/2002 |
| 6426616 | Phasing and indicator arrangements for switchgear or the like A phasing and indicator arrangement is provided for switchgear or the like that responds to electrical sources and provides voltage indicator functions, phasing determinations, and self-test features. Phasing provisions are responsive to two or more volta... | 07/30/2002 |
| 6423903 | Method and arrangement for minimizing electrical field stress in circuit interrupters and housings therefor A method and arrangement is provided for minimizing electrical field stress on circuit interrupters and their housings via the arrangement of the external sheds or skirts of the housing. In one arrangement, some of the sheds are grouped about each side of... | 07/23/2002 |
