Abstract: A test switch assembly electrically coupled with an electronic module. The electronic module is designed with intelligent sophisticated circuitry that facilitates the transmission and/or the detection of currents and/or voltages between a protective relay and current or voltage transformers. In one embodiment, the electronic test switch senses, detects, monitors, analyzes and/or stores electrical signals and outputs this information to standalone displays, computers. RTU, or similar devices, through wired or wireless connections. The electronic module also allows the test switch to accept electrical connectors such as RJ45, USB, RCA, and/or BNC, among others.

Abstract: A test switch assembly electrically coupled with an electronic module. The electronic module is designed with intelligent sophisticated circuitry that facilitates the transmission and/or the detection of currents and/or voltages between a protective relay and current or voltage transformers. In one embodiment, the electronic test switch senses, detects, monitors, analyzes and/or stores electrical signals and outputs this information to standalone displays, computers. RTU, or similar devices, through wired or wireless connections. The electronic module also allows the test switch to accept electrical connectors such as RJ45, USB, RCA, and/or BNC, among others.

Abstract: A condenser for condensing vapor to liquid for cooling a switchgear having a heat generating component inside an enclosure and tubing structure associated with the heat generating component. A working fluid is disposed within an end portion of the tubing structure. The condenser includes a hollow tubular base defining a volume and having first and second opposing opened ends. A plurality of fins extends from a periphery of the base. The fins are in spaced relation and disposed about the entire circumference of the base. A first end cap is coupled to the base so as to close the first opened end. A second end cap is coupled to the base to close the second opened end. The second end cap has port structure constructed and arranged to fluidly communicate the tubing structure with the volume.

Abstract: Systems, devices and methods for racking circuit breakers in a switchgear cabinet include a drive mechanism that is flexibly linked to a racking mechanism associated with each circuit breaker. The drive mechanism can be connected for racking multiple circuit breakers without requiring re-positioning of the drive mechanism.

Abstract: An assembly includes a cabinet having an interior and a door to gain access to the interior. An intelligent electronic device (IED) is within the interior of the cabinet and includes inputs providing electrical connections to the IED, pushbuttons to provide user input to the IED, a display module including a display, a component, and a timer circuit. The timer circuit powers the component OFF or places it in a reduced power state when not in use after a certain amount of time. A switch is associated with the door and is electrically connected to at least one of the inputs so that when the display module is powered OFF or in the reduced power state and when the door is opened, the switch causes a signal to be sent to the timer circuit to cause the timer circuit to power the component fully ON.

Abstract: Systems, devices and methods are disclosed for racking circuit breakers in a switchgear cabinet via a drive mechanism that is flexibly linked to a racking mechanism associated with each circuit breaker. The drive mechanism can be connected for racking multiple circuit breakers without requiring re-positioning of the drive mechanism.

Abstract: A containment system for internal arc generated gasses includes a compartment having an aperture through a wall thereof. A bus compartment includes an opening through a wall thereof. Arc chamber is in communication with the aperture and the opening. A vent flap member closes the opening and is moveable to an open position to permit gasses to flow through the opening into the arc chamber. Flap structure is associated with the aperture and includes a plurality of interconnected flaps for moving generally simultaneously from an open position, permitting gasses to flow through the aperture into the arc chamber, to a closed position, closing the aperture to prevent gasses from flowing through the aperture. The flap structure includes actuating structure coupled with the interconnected flaps. The vent flap member, when moved to the open position thereof, engages the actuating structure to move the interconnected flaps to the closed position thereof.

Abstract: An assembly includes a cabinet having an interior and a door to gain access to the interior. An intelligent electronic device (IED) is within the interior of the cabinet and includes inputs providing electrical connections to the IED, pushbuttons to provide user input to the IED, a display module including a display, a component, and a timer circuit. The timer circuit powers the component OFF or places it in a reduced power state when not in use after a certain amount of time. A switch is associated with the door and is electrically connected to at least one of the inputs so that when the display module is powered OFF or in the reduced power state and when the door is opened, the switch causes a signal to be sent to the timer circuit to cause the timer circuit to power the component fully ON.

Abstract: A bushing structure for switchgear includes first and second separate support structures each having surfaces defining at least one opening. The support structures are coupled together so that the openings define a passage through the bushing structure and so that a slot is defined between the first and second support structures, surrounding the passage. A bushing is disposed in the passage and has a body, a bus receiving member, and a compression structure. The bus receiving member has an opening there-through sized to receive a bus bar. When the first and second support structures are coupled together with the bushing in the passage, the compression structure is disposed in the slot, sandwiched between the first and second support structures so that they exert pressure on the compression structure.

Abstract: Among other things, one or more techniques and/or systems are provided for monitoring an operating condition of an electrical component, such as electrical switchgear. In one example, temperatures associated with an electrical conductor connection within the electrical component may be evaluated against one or more expected temperatures curves derived from a linear regression model to determine whether the electrical conductor connection has failed or is starting to fail. In another example, temperature readings may be monitored to determine whether a temperature reading at one location is out of sync with temperature readings at other locations. An electrical conductor connection associated with a location of the out of sync temperature may be determined as faulty. In another example, a Euclidean distance model and/or a correlation coefficient model may be used to identify a faulty electrical conductor connection. In this way, failure and/or potential failure of the electrical component may be predicted.

Abstract: A method and system is disclosed for monitoring switchgear. The current supplied to the main bus is measured. The current flowing through a plurality of feeder circuits is also measured. The temperature of the main bus at one or more nodes is measured, wherein a node is a connection point between the main bus and each feeder circuit. The current flowing through one of the nodes is determined by subtracting the current flow through each the feeder circuit upstream from the node, from the current supplied by the input circuit. An alarm condition is determined if the temperature at a node exceeds a predetermined temperature value for a given current flow through the node. The alarm condition is thereafter displayed to a switchgear operator.

Abstract: A multipoint door latch apparatus for use in a switchgear enclosure comprising a door assembly, a latch handle and latch handle mechanism, a plurality of catch tabs affixed to the face frame of the enclosure. Top, side, and bottom latch bars in latch bar chambers are provided, each having at least one latch tooth and being linked by latch bar linkages such that a displacement of one latch bar along results in the same magnitude displacement in the other two latch bars. The catch tabs or latch teeth, or both, are tapered to provide a suitable seal between the door assembly and the enclosure when the door assembly is latched.

Abstract: A compartment of an arc resistant enclosure for an electrical component includes a plurality of wall structures defining an interior space for housing an electrical component. One of the wall structures has aperture structure for permitting pressure and gases to flow there-from and vent from the compartment. A stop structure is associated with the aperture structure. Flap structure is associated with the aperture structure and is movable from a closed position covering the aperture structure to an opened position extending outwardly of the compartment permitting pressure and gas to exit the compartment through the aperture structure. In the closed position, a portion of the flap structure engages the stop structure to prevent the flap structure from collapsing into the interior space of the compartment.

Abstract: A mounting frame for removeably mounting one or more electrical devices has a base, a mounting bracket and a plurality of platforms for mounting the electrical devices thereon. The mounting bracket has openings for engaging with mounting bolts on a utility pole or other support structure. The mounting frame is balanced and has an eye bolt for elevating the frame to the desired level on the support structure during installation.

Abstract: A bushing structure for switchgear includes first and second separate support structures (30, 32) each having surfaces defining at least one opening (48). The support structures are coupled together so that the openings define a passage (49) through the bushing structure and so that a slot (50) is defined between the first and second support structures, surrounding the passage. A bushing (40) is disposed in the passage and has a body (42), a bus receiving member (44), and a compression structure (45). The bus receiving member has an opening (46) there-through sized to receive a bus bar (28). When the first and second support structures are coupled together with the bushing in the passage, the compression structure is disposed in the slot, sandwiched between the first and second support structures so that they exert pressure on the compression structure.

Abstract: Among other things, one or more techniques and/or systems are provided for monitoring an operating condition of an electrical component, such as electrical switchgear. In one example, temperatures associated with an electrical conductor connection within the electrical component may be evaluated against one or more expected temperatures curves derived from a linear regression model to determine whether the electrical conductor connection has failed or is starting to fail. In another example, temperature readings may be monitored to determine whether a temperature reading at one location is out of sync with temperature readings at other locations. An electrical conductor connection associated with a location of the out of sync temperature may be determined as faulty. In another example, a Euclidean distance model and/or a correlation coefficient model may be used to identify a faulty electrical conductor connection. In this way, failure and/or potential failure of the electrical component may be predicted.

Abstract: A condenser for condensing vapor to liquid for cooling a switchgear having a heat generating component inside an enclosure and tubing structure associated with the heat generating component. A working fluid is disposed within an end portion of the tubing structure. The condenser includes a hollow tubular base defining a volume and having first and second opposing opened ends. A plurality of fins extends from a periphery of the base. The fins are in spaced relation and disposed about the entire circumference of the base. A first end cap is coupled to the base so as to close the first opened end. A second end cap is coupled to the base to close the second opened end. The second end cap has port structure constructed and arranged to fluidly communicate the tubing structure with the volume.

Abstract: A containment system for internal arc generated gasses includes a compartment having an aperture through a wall thereof. A bus compartment includes an opening through a wall thereof. Arc chamber is in communication with the aperture and the opening. A vent flap member closes the opening and is moveable to an open position to permit gasses to flow through the opening into the arc chamber. Flap structure is associated with the apertore and includes a plurality of interconnected flaps for moving generally simultaneously from an open position, permitting gasses to flow through the aperture into the arc chamber, to a closed position, closing the aperture to prevent gasses from flowing through the aperture. The flap structure includes actuating structure coupled with the interconnected flaps. The vent flap member, when moved to the open position thereof, engages the actuating structure to move the interconnected flaps to the closed position thereof.

Abstract: A multipoint door latch apparatus for use in a switchgear enclosure comprising a door assembly, a latch handle and latch handle mechanism, a plurality of catch tabs affixed to the face frame of the enclosure. Top, side, and bottom latch bars in latch bar chambers are provided, each having at least one latch tooth and being linked by latch bar linkages such that a displacement of one latch bar along results in the same magnitude displacement in the other two latch bars. The catch tabs or latch teeth, or both, are tapered to provide a suitable seal between the door assembly and the enclosure when the door assembly is latched.

Abstract: A switchgear system includes rail structure having a base coupled to an interior sidewall of a frame. A first member extends from the base and has an upwardly facing surface. The first member has a second surface extending generally transversely to the upwardly facing surface to oppose a surface of the base. A second member extends from the base and has a downwardly facing surface spaced from the upwardly facing surface so as to define a wheel receiving channel there-between. A circuit breaker tuck includes wheels on exterior sidewalls. The wheels are received in the wheel receiving channel to be slidable along the upwardly facing surface, with the upwardly and downwardly facing surfaces limiting movement of the circuit breaker truck about the horizontal axis and the surface of the base and the second surface of the first member limiting movement of the circuit breaker truck about the vertical axis.