| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 361071000 | Automatic reclosing | 19 |
| 20080266733 | Circuit Testing Closer Apparatus and Method With In-Rush Current Awareness - A circuit testing closer is capable of closing a power distribution circuit and interrupting the resulting current at the next current zero. Upon detecting a fault, the circuit testing closer is operable to open contacts to isolate the fault. Next, the circuit testing closer tests the faulted line to determine whether the fault has cleared. The circuit testing closer may generate a first test signal having a first polarity and a second test signal having a second polarity opposite the first polarity. Generation of the second test signal may be limited to occur when the first test signal indicates a fault. | 10-30-2008 |
| 20090027817 | Overload Relay and Operating Method Thererof - An overload relay, which trips a current flow between a power source and a load, includes a trip capacitor that stores therein an electric charge to excite a trip coil so as to trip the current flow, a reset capacitor that stores therein an electric charge to excite a reset coil so as to reset the tripped current flow, an energizing unit that energizes the coils, and a capacitor-diagnosing unit that diagnoses the capacitors. The energizing unit forcibly energizes the trip coil by using the trip charge when the capacitor-diagnosing unit diagnoses that there is a degradation of a property of the trip capacitor. | 01-29-2009 |
| 20110032650 | Reclosing control system and method using superconducting fault current limiter - The present invention relates to a reclosing control system and method using a superconducting fault current limiter. The reclosing control system includes a superconducting fault current limiting device in which two circuits, each having a switch and a superconducting fault current limiter connected in series with each other, are connected in parallel with each other. A recloser is disposed between the superconducting fault current limiting device and a distribution line and is configured to control reclosing. The distribution line is connected to the recloser and is configured to transfer power to a load. | 02-10-2011 |
| 20110170220 | RECLOSING SYSTEM FOR POWER TRANSMISSION LINE - There is provided a reclosing system for a power transmission line, which performs high-speed reclosing using protection relays. The protection relays are provided at different terminals of the power transmission line. Each of the protection relays is configured to send the reclosing command to the circuit breaker when a line voltage at the phase with the accident, detected by the metering voltage transformer after the phase with the accident is cut off, falls within an allowable range. The allowable range is determined based on a line voltage assumed at the phase when the phase is normal. | 07-14-2011 |
| 20120250202 | Multiple Phase Circuit Testing Closer Method - Upon detecting a fault, a circuit testing closer is operable to open contacts to isolate the fault. Next, the circuit testing closer tests the faulted phase to determine whether the fault has cleared. The circuit testing closer may employ one or more dynamic thresholds to determine the existence of a fault. | 10-04-2012 |
| 20130070378 | RECLOSER DEVICE AND METHOD OF OPERATION - A device for interrupting the flow of electrical power in an electrical distribution system is provided. The device includes a sensor operably coupled to the electrical distribution system. A switching mechanism is coupled to the electrical distribution system, the switching mechanism movable between an open position and a closed position. A controller operably coupled to the sensor and the switching mechanism, the controller having a processor that is responsive to executable computer instructions when executed on the processor incrementing a first counter in a first mode of operation and a second counter in a second mode of operation. Wherein the processor is further responsive to executable computer instructions for switching from the first mode to the second mode in response to a signal from the sensor. | 03-21-2013 |
| 20130135778 | AUTOMATIC RESET DISCRIMINATION SYSTEM AND METHOD FOR A SELF POWERED ELECTRONIC PROTECTION DEVICE - An apparatus and method for selectively automatically resetting an electronic protection device. The electronic protection device may protect a motor load by disconnecting the load from a power source when the current drawn by the load exceeds a threshold, when the power source suffers from a phase imbalance or phase loss, or when another condition is detected. The electronic protection device discriminates between different types of fault conditions and determines whether to suppress an automatic reset function of the device. The electronic protection device includes a reset energy storage device for automatically resetting the electronic protection device following a trip event using energy from the reset energy storage device. In operation, the electronic protection device detects a fault condition not calling for an automatic reset, then discharges the reset energy storage device and trips the electronic protection device before the reset energy storage device recharges. | 05-30-2013 |
| 20130170083 | POWER-ON RESET GFCI - A circuit interrupting device, such as a GFCI receptacle device, is provided that automatically resets itself when power is initially applied to the device, for example, when the device is first installed or when power is reapplied after a power outage occurs. When power is applied correctly to the line side of the device, as opposed to the load side, a voltage is generated that turns on a switching device. Turning on the switching device allows a low level of electric current to flow which, in turn, allows a higher level electric current to flow which closes the latching mechanism of the device and places the device in the reset condition. | 07-04-2013 |
| 20130182360 | METHODS, APPARATUSES AND SYSTEMS FOR MONITORING FOR EXPOSURE OF ELECTRONIC DEVICES TO MOISTURE AND REACTING TO EXPOSURE OF ELECTRONIC DEVICES TO MOISTURE - Systems and methods for monitoring the moisture to which an electronic device is exposed may alter or vary operation of the electronic device. Operation of the electronic device may be altered or varied to provide a notification that the electronic device has been exposed to moisture. When an electronic device is exposed to moisture, an operational mode of the electronic device may be changed. A change in the operational mode of the electronic device may include termination of the supply of power to one or more components, which may protect those components. Programs or apps that provide a user of the electronic device with information regarding exposure of the electronic device to an amount of moisture that meets or exceeds a moisture response threshold are also disclosed. | 07-18-2013 |
| 20130208381 | BREAKER CONTROL SWITCH WITH A TIME-DELAY CLOSE FUNCTION TO MITIGATE AN AURORA EVENT - Control circuits for breaker control switches with a time-delay function and associated methods of making and using these devices to prevent an aurora event are disclosed. An exemplary control circuit may include a signaling device configured to provide a close signal for a circuit breaker to close; a timer configured to complete a countdown after the circuit breaker is opened; and a switch configured to close the circuit breaker after the countdown is complete and when the close signal is provided by the device. This may prevent engaging a piece of equipment with the power grid when the piece of equipment is out of phase or frequency with the power grid, which often leads to significant damage or destruction of the piece of equipment. Other embodiments are described. | 08-15-2013 |
| 20130265681 | AUTOMATIC AND SELF-SUSTAINING ELECTRONIC SYSTEM FOR THE EARLY DETECTION OF SHORT CIRCUIT FAULT CONDITIONS - This is a solid state switch device, capable of receiving and differentiating electrical signatures by a number of electronic and optical elements, the arrangement of which makes it possible to recognize the type of fault condition (short circuit), to interrupt the current and to restore the latter automatically or manually with no electric arcs, no falls in the threshold, and no heat dissipation, thus increasing the service life, reducing the response time, and restoring the operation of the installation or electrical apparatus to be protected. | 10-10-2013 |
| 20140049865 | Soft Restarting of a Power Network Using Inverter-Controlled Energy Storage System - Systems and methods for softly restarting a power network using an inverter-controlled energy storage system are provided. In response to an event such as a fault or other condition, a power network bus that provides power to one or more industrial loads (e.g. motors) can be disconnected from the utility grid. Instead of automatically recoupling the power network bus to the grid after a specified time period, a soft restart is accomplished by pre-energizing the power network bus with an energy storage system (ESS) according to a ramp up process and synchronizing the power network bus with the utility grid while the power network bus operates in an islanded mode. The power network bus can then be reconnected to the utility grid, for instance, by reclosing the one or more circuit breakers coupled between the power network bus and the utility grid. | 02-20-2014 |
| 20150043115 | SOLID STATE RELAY PROTECTIVE DEVICE - An electrical circuit for protection of a solid-state relay includes a switch element connected between an input signal source and an input terminal of the solid-state relay. The solid-state relay includes an output terminal for connection to a load. A sensing element is associated with the solid-state relay to sense an operating parameter associated with the solid-state relay. A feedback element controls the switch element to switch an operating state in response to the operating parameter exceeding a reference parameter. The solid-state relay changes state in response to the switch element to control an output current of the solid-state relay between an energized or de-energized state. | 02-12-2015 |
| 20150092310 | ELECTRONIC CIRCUIT - An electronic circuit arrangement may include a first and a second electrical supply line for connecting an electronic device with a rechargeable battery. The first electrical supply line may be connected at one end with the rechargeable electric battery and at the other end with the electronic device for supplying electric energy. At least two switching elements may be provided in the first electrical supply line, which each may be switchable between an open state, in which the respective switching element electrically interrupts the first supply line, and a closed state. The electronic circuit arrangement may include a protective circuit arrangement and a reset circuit arrangement. | 04-02-2015 |
| 20150116878 | Droput Recloser - A dropout recloser is capable of in accordance with its operating programming after a predetermined number of fault interrupting operations, e.g., 1, 2, 3 or more but typically 3, to drop out of a cutout and hang freely in a hinge contact of the cutout providing sectionalization with an observable visible gap. The recloser includes fault interrupting and reclosing components, a drop out mechanism and a controller. The drop out mechanism may include a bi-stable actuator to affect fault interrupting operation and dropout operation. The device may include motion limiting structures. The recloser may have a number of operating modes or sequences. | 04-30-2015 |
| 20160156170 | SERVER WITH POWER SOURCE PROTECTION SYSTEM AND POWER SOURCE PROTECTION METHOD | 06-02-2016 |
| 361072000 | With lockout means | 1 |
| 20090080130 | AUTOMOTIVE OVERCURRENT PROTECTION - Overcurrent is prevented in an automotive vehicle based on sensing at least one operating condition. An overcurrent threshold is determined based on characteristics of the load and on the sensed condition. If the sensed flow of current exceeds the determined overcurrent threshold, the flow of current to the load is interrupted. The sensed condition may be, for example, ambient temperature. | 03-26-2009 |
| 361074000 | Continuous | 2 |
| 361075000 | With time delay before reclosing | 2 |
| 20090009919 | RESETTABLE SHORT-CIRCUIT PROTECTION CIRCUIT - A resettable short-circuit protection circuit can terminate excessive fault currents automatically and quickly. The short-circuit protection circuit is switchable and has a low input impedance during normal operation so that there is not a significant voltage drop across the switching elements of the protection circuit. The short-circuit protection circuit allows a power source internal to a portable device to be safely connected to an external accessory where there exists the possibility that the connection could be shorted at the time power is first supplied to the external accessory or a short develops afterwards. After terminating a short-circuit condition, the protection circuit may be reset by cycling an enable signal. The fault termination and reset timing may be configured by selection of internal resistance and capacitance values. | 01-08-2009 |
| 20090027818 | Discrete Hot Swap and Overcurrent-Limiting Circuit - The present invention is directed towards a discrete protection circuit located on a circuit card, and systems and methods related thereto. The protection circuit protects circuit card components from an inrush current and overcurrent conditions. The discrete protection circuit includes a switch to control a delivered load current to an output port, an SCR which latches when an overcurrent condition is detected across a sense resistor, and a series of resistors and a capacitor that determines the retry delay subsequent to an overcurrent detection. Advantages of the discrete protection circuit of the invention over prior art integrated circuits include: lower parts counts, lower production costs, greater flexibility, and increased reliability. | 01-29-2009 |
