Patent Grant
7623011
1. Field of the Invention
The present invention relates to a draw out type circuit breaker apparatus and, more particularly, to a device and associated assembly and method for remotely tripping and resetting a metal-enclosed draw out type circuit breaker apparatus.
2. Description of Related Art
Some types and configurations of circuit breaker apparatuses may implement a trip (open) actuator and/or a reset (close) actuator, both of which may be accessible by an operator of such a circuit breaker apparatus. For example, a metal-enclosed draw out type circuit breaker apparatus may incorporate open and close push-button type operating actuators disposed on or about a surface of the enclosure. The open and close operating actuators can be used for manually operating the circuit breaker apparatus so as to disrupt (open) an electrical circuit or complete (close) that circuit. Such a manual operation is often accomplished by the operator physically engaging and operating the appropriate operating actuator from immediately adjacent to the circuit breaker apparatus. However, particularly in instances where the circuit breaker apparatus handles a large electrical load, the operator may be faced with many hazards, such as shock, electrocution, sparks, explosions, or other high voltage hazards as will be appreciated by one skilled in the art. Accordingly, it may be advantageous for the operator to be able to operate the circuit breaker apparatus from a safe distance away from that apparatus. Previous attempts at such remote usage have involved, for example, developing electrical circuitry for integrally interfacing remote operational capabilities with the internal components of the circuit breaker apparatus, such circuitry often being disposed within any enclosure for the circuit breaker apparatus and inaccessible to the operator. Accordingly, should such integral remote operation circuitry or components require service, the operator is still faced with the aforementioned hazards in accessing the components disposed within the enclosure.
Thus, there exists a need for a device capable of allowing an operator to remotely operate an enclosed circuit breaker apparatus, wherein the remote operational device should be accessible externally with respect to the enclosure for the circuit breaker apparatus. Such a device should also minimize or eliminate the aforementioned hazards to the operator when operating such a circuit breaker apparatus.
The above and other needs are met by the present invention which, in one aspect, provides a device adapted for remote operation of a circuit breaker apparatus, wherein the circuit breaker apparatus includes a trip device and a reset device operably engaged therewith, and externally accessible with respect to an enclosure enclosing the circuit breaker apparatus. Such a device comprises at least one actuator capable of being operably engaged with the circuit breaker apparatus, externally to the enclosure. The at least one actuator is also configured to be capable of physically engaging at least one of the trip device and the reset device. A controller device is in communication with the at least one actuator and is capable of being remotely disposed with respect thereto. The controller device is also capable of selectively actuating the at least one actuator, from a remote location with respect to the circuit breaker apparatus, so as to at least one of actuate the trip device to trip the circuit breaker apparatus and actuate the reset device to reset the circuit breaker apparatus.
Another aspect of the present invention comprises a circuit breaker assembly, which includes a circuit breaker apparatus having a trip device and a reset device operably engaged therewith, and configured to be externally accessible with respect to an enclosure enclosing the circuit breaker apparatus. A device configured to provide remote operation of the circuit breaker apparatus is operably engaged therewith, and includes at least one actuator capable of being operably engaged with the circuit breaker apparatus, externally to the enclosure, so as to be capable of physically engaging at least one of the trip device and the reset device. A controller device is in communication with the at least one actuator and is capable of being remotely disposed with respect thereto. The controller device is also capable of selectively actuating the at least one actuator from a remote location with respect to the circuit breaker apparatus so as to at least one of actuate the trip device to trip the circuit breaker apparatus and actuate the reset device to reset the circuit breaker apparatus.
Yet another aspect of the invention comprises a method of remotely operating a circuit breaker apparatus. First, at least one actuator is operably engaged with the circuit breaker apparatus, externally to an enclosure enclosing the circuit breaker apparatus, such that the at least one actuator is capable of physically engaging at least one of a trip device and a reset device operably engaged with the circuit breaker apparatus and externally accessible with respect to the enclosure. The at least one actuator is then controlled with a controller device, remotely disposed with respect thereto and in communication therewith, by selectively actuating the at least one actuator via the remotely disposed controller so as to at least one of actuate the trip device to trip the circuit breaker apparatus and actuate the reset device to reset the circuit breaker apparatus.
Thus, aspects of the present invention provide a device capable of allowing an operator to remotely operate an enclosed circuit breaker apparatus, wherein the remote operational device is accessible externally with respect to the enclosure for the circuit breaker apparatus. Aspects of the present invention also provide a device that minimizes or eliminates hazards to the operator, such as shock, electrocution, sparks, explosions, or other high voltage hazards as will be appreciated by one skilled in the art, when operating such a circuit breaker apparatus. Accordingly, aspects of the present invention provide significant advantages as further detailed herein.
Having thus described the invention in general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:
The present inventions now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, these inventions may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Like numbers refer to like elements throughout.
A draw out type circuit breaker apparatus 200 may, in some instances, incorporate open (reset) 300 and close (trip) 350 circuit breaker operating devices disposed on or about a surface of the enclosure 250, where such circuit breaker operating devices 300, 350 may be of, for example, a push-button type. Typically, such an enclosed circuit breaker apparatus 200 is configured to be manually operated by an operator, via the circuit breaker operating devices 300, 350, and the enclosure 250 is included with the circuit breaker apparatus 200 to prevent or reduce the risk of electrical shock to the operator from incidental contact with the internal electricity-carrying components thereof. However, the operator manually operating the circuit breaker apparatus 200, from immediately adjacent thereto, may still be faced with hazards such as sparks, electrical shocks, or explosions.
In light of the risks faced by the operator, embodiments of the present invention include a device for remotely operating such a circuit breaker apparatus 200, the device being indicated by the numeral 400. Such a device 400 is configured to be operably engaged with the circuit breaker apparatus 200 so as to be capable of physically engaging and operating the open and close circuit breaker operating devices 300, 350 via respective actuators 425, 450. Such actuators 425, 450 may comprise, for example, electrically-operated solenoids configured to be capable of exerting an outwardly-directed physical force sufficient to operate the respective circuit breaker operating devices 300, 350. One skilled in the art will appreciate, however, that many other types of actuators 425, 450 may be implemented, such as hydraulic actuators or devices, and/or pneumatic actuators or devices. In some instance, for example, an appropriate mechanical linkage may be operated by a single actuator (configuration not shown) such that the selectively-actuated single actuator can be directed to operate either of the open and close circuit breaker operating devices 300, 350.
In order to position the actuators 425, 450 to operate the corresponding circuit breaker operating devices 300, 350, each actuator 425, 450 may be operably engaged with a respective fastening device 500, 550 capable of fastening the actuators 425, 450 to the circuit breaker apparatus 200. For example, in instances where the enclosure 250 is comprised of a metallic material, the fastening device(s) 500, 550 may comprise actuatable magnetic type fastening devices, as will be appreciated by one skilled in the art. In one embodiment, the magnetic type fastening device 500, 550 may be, for instance, an electromagnet that is actuated by the application of electricity thereto, the magnetic field created thereby causing the fastening device 500, 550 to be magnetically attracted to the metallic enclosure 250 so as to be secured thereto as long as the electricity is applied to the electromagnet. For this purpose, a switch device 600 may be provide in operable engagement with either or both of the fastening devices 500, 550 for providing actuation and deactuation capabilities therefor. One skilled in the art will also appreciate, however, that the fastening device(s) 500, 550 may be provided in any form or manner suitable for securing the respective actuator 425, 450 to the enclosure 250 or otherwise to the circuit breaker apparatus 200, such that the actuators 425, 450 are capable of operating the circuit breaker operating devices 300, 350. In one embodiment, as shown, the actuators 425, 450; a pair of fastening devices 500, 550; and one or more switch devices 600 may be incorporated into a single assembly when applied to a particular type of circuit breaker. Accordingly, the device 400 may be appropriately configured for application to many different types of circuit breakers within the spirit and scope of the present invention. Thus, when the device 400 is secured to the circuit breaker apparatus 200 via the fastening devices 500, 550, actuation of one of the actuators 425, 450 thereby causes that actuator to physically engage the corresponding circuit breaker operating device 300, 350 so as to trip or reset the circuit breaker apparatus 200, as appropriate.
In order to provide for remote operation of the circuit breaker apparatus 200, the device 400 may further include a controller 700 in communication with and capable of controlling the device 400. Such communication between the controller 700 and the device 400 may be accomplished via a wired connection 725 shown in
Many modifications and other embodiments of the inventions set forth herein will come to mind to one skilled in the art to which these inventions pertain having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the inventions are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
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| Number | Date | Country | |
|---|---|---|---|
| 20070080143 A1 | Apr 2007 | US |
