Abstract: An electrical device includes a fixed support with supply lines and a distribution circuit to supply power to a contactor block. Each contactor block includes secondary lines, each connected to a supply line, and is movable between joined and disjoined positions. Each contactor block includes a switching device for switching all secondary lines of the contactor block between open and closed. The electrical device also includes a control block, movable between joined and disjoined positions. When in the joined position, each contactor block also is held in the joined position, an electronic monitoring device of the control block also being connected to the switching device of each contactor block to control switching of each switching device independently. When the control block is in the disjoined position, the switching device of each contactor block opens the secondary lines, while each contactor block is movable between its joined and disjoined positions.

Abstract: A system and method are provided for coordinating the installation and removal a motor control center subunit with the power connection and interruption thereof. A system of interlocks and indicators causes an operator to install a motor control center subunit into a motor control center, and connect supply and control power thereto, in a particular order. Embodiments of the invention may prevent actuation of line contacts of the bucket, and shield the line contacts, until the bucket is fully installed in the motor control center. Other embodiments also prevent circuit breaker closure until the line contacts are engaged with a bus of the motor control center.

Abstract: Embodiments of busbar assemblies for immersion cooling are described herein. In one embodiment, a busbar assembly can include an insulator block and a busbar. The insulator block can include a first barrier extending from a first end of the insulator block to a second end of the insulator block. The insulator block can a second barrier extending from the first end to the second end. The first barrier can include a first support surface. The second barrier can include a second support surface. The insulator block can include a channel between the first barrier and the second barrier. The channel can extend from the first end to the second end. The busbar can be positioned in the channel. The busbar may have a top surface that is recessed below the first support surface and the second support surface. Other examples may be described and claimed.

Abstract: The invention relates to an electrical distribution system (1), having a housing (3), in which fastening rails (13) are provided, which provide fastening points (15), which are arranged in lines, for the fastening of electrical components (17). Additionally, one or more, in particular explosion-protected, line-shaped heating elements (19) are provided in the housing (3), which heating elements each comprise a radiator body (23). The one or more heating elements (19) are each arranged below an associated group of fastening points (15), where electric current can be applied to the heating elements in order to heat electrical components (17) fastened at the associated fastening points (15).

Abstract: A system and method for connecting supply power to motor control components includes use of a motor control center subunit with moveable supply power contacts. After a motor control center subunit is secured into a motor control center compartment, the supply power contacts may be advanced to engage supply power buses. For disconnection, the supply power contacts may be retracted and isolated from the buses before physical removal of the subunit.

Abstract: A compact busway system for low and medium voltage application is described. In particular, the described compact busway system is designed for low and medium power distribution systems for high current applications. The described compact busway system has a enclosure assembly with at least two side mount supports affixed to the enclosure assembly and at least two horizontal supports, a first horizontal support and a second horizontal support, which are connected and perpendicular to the at least two side mount supports. The compact busway system further includes at least one busbar affixed between the first horizontal support and the second horizontal support, at least one strap connected to the first horizontal support and the second horizontal support, and at least one ground bus connected to the enclosure assembly.

Abstract: Embodiments of a motor control unit for a motor control center and methods for servicing the same are provided. The motor control unit comprises a housing for enclosing one or more electrical components therein. The housing includes a retractable stab assembly and a lead screw assembly operably coupled thereto for extending and retracting one or more stabs for controlling the flow of power to the one or more electrical components.

Abstract: Circuit breakers with a rotary handle attached to an inwardly oriented shaft that connects to a gear assembly that translates rotational input to linear input also include a trip assist spring in communication with the rack gear so that, in operation, the trip assist spring applies a force to the operator slider and forces the handle to a consistent trip position.

Abstract: A capacitor including: a capacitor case having a bottom portion and an opening; a capacitor element accommodated in the capacitor case and including a first electrode E1 and a second electrode E2; a first fixed terminal T1 connected to the first electrode E1; a second fixed terminal T2 connected to the second electrode E2; a movable terminal partly accommodated in the capacitor case and including a free end; and a fixing portion that fixes a first portion of the movable terminal, wherein the first fixed terminal T1 and the second fixed terminal T2 each have an extending portion extending toward an outside of the capacitor case, the free end is led to the outside of the capacitor case, and the fixing portion fixes the first portion such that the free end extends in the extending direction of the extending portions.

Abstract: An electrical junction box with a built-in isolation transformer is provided. The junction box comprises an interior base portion having at least one opening, a transformer secured to the interior base portion and in electrical communication with low-voltage and high-voltage terminals, a cover configured to attach to a junction box base plate and housing the interior base portion and the transformer, and a gasket providing a watertight seal between the cover and the junction box base plate.

Abstract: A power distribution rack includes a chassis that defines a first slot and a second slot adjacent the first slot. The power distribution rack also includes a plurality of electronics modules including a first module coupled within the first slot and a second module coupled within the second slot. A central bus bar assembly is coupled to the chassis and includes an outer bus bar including a first flange, a second flange, and a first bus plate extending therebetween. The first and second flanges and the first bus plate define a first channel. The bus bar assembly further includes an inner bus bar coupled within the first channel. The inner bus bar includes a third flange, a fourth flange, and a second bus plate extending therebetween. The first and third flanges are coupled to the first module and the second and fourth flanges are coupled to the second module.

Abstract: A motor control center (MCC) unit for installation in a compartment of an MCC includes a frame, a bus contact assembly supported by the frame and comprising at least one moveable bus contact configured to releasably engage at least one power bus of the MCC, an auxiliary power input supported by the frame and configured to be connected to an external power source, and a control circuit supported by the frame. The MCC unit further includes an interlock circuit configured to selectively couple the control circuit to the at least one bus contact and the auxiliary power input responsive to positioning of the at least one bus contact. The interlock circuit may be configured to prevent power flow between the control circuit and the auxiliary power input when the at least one bus contact is engaged with the power bus.

Abstract: An enclosure includes an explosion resistant housing having a back wall, a top, a first side, a second side, and a door. The enclosure further including a transistor disposed on the back wall of the explosion resistant housing. The enclosure also includes a passive heat exchanger disposed on the outside of the back wall of the explosion resistant housing. Also, a method of thermal management within an enclosure includes transferring heat from a transistor within an explosion resistant housing, wherein the heat is transferred from the transistor to a back wall of the explosion resisting housing. The method further includes passively removing the heat from the explosion resistant housing.

Abstract: Systems, methods, and devices are provided for coupling a direct current (DC) pre-charging circuit to a motor drive. In one embodiment, an industrial automation device may include an enclosed module that may include a pre-charge circuit. The pre-charge circuit may pre-charge a direct current (DC) bus. Further, the DC bus may couple to an inverter. The enclosed module may also include a power input that may couple the pre-charge circuit to a DC power source and an electrical output structure that may couple the pre-charge circuit to the inverter. Additionally, the pre-charge circuit may be removeably coupled to the inverter and the DC power source via a sliding action of the enclosed module.

Abstract: Embodiments of the present disclosure provide a rack slide system comprising an elongated supporting structure and a plurality of mobile racks mounted on the elongated supporting structure in side-by-side relation for movement along a controlled path, where the length of the path exceeds by a predetermined amount the sum of the depths of the mobile racks to provide at least one gap between selected ones of the mobile racks.

Abstract: A cabinet structure for a switchgear assembly. The cabinet structure includes a cabinet having upper and lower vents and a breaker cradle for holding a circuit breaker having primary disconnects for connecting the circuit breaker to bus bars. The cabinet further includes an air passageway located between the upper and lower vents, wherein the air passageway extends vertically through the primary disconnects and the cabinet. Further, the cabinet includes a fan module having at least one fan for drawing outside air through the lower vent, the air passageway and the primary disconnects for cooling the primary disconnects.

Abstract: A guide assembly for a switchgear assembly is provided. The guide assembly includes an elongated support member and a passage. The support member is coupled to and extends from a housing assembly rear sidewall. The support member extends in the circuit breaker assembly direction of travel. The passage is disposed on the circuit breaker assembly base and also extends in the circuit breaker assembly direction of travel. The support member is substantially aligned with the passage. In this configuration, as the circuit breaker assembly moves between a withdrawn position and an installed position, the support member moves between a first position, wherein the support member is not disposed in the passage, and a second position, wherein the support member is partially disposed in the passage. When the support member is in the second position, the support member bears a portion of the weight of the circuit breaker assembly base.

Abstract: In an electrical distribution cabinet a mechanism providing quick, reliable, passive arc blast control has a flue chamber surrounding the likely arc site such as an electrical connection point. The flue chamber provides a flue channel which lengthens the arc and attenuates the current and temperature until the arc is extinguished. Preferably, the flue chamber and channel are formed of opposable open-faced polyhedral structures, one fitting inside the other. The mechanism is particularly suited for draw-out circuit breaker connections in a switch gear cabinet.

Abstract: A communication system is provided for a motor control center. The motor control center includes an enclosure and a plurality of subunits. The enclosure comprises a framework for dividing the enclosure into a plurality of compartments. The subunits are removably disposed within the compartments. The communication system includes a mounting bracket fixedly attached to the framework, within a corresponding one of the compartments, and a communication module mounted on the mounting bracket. The communication module includes a housing and a number of features such as, for example and without limitation, a DIP switch and electrical connector(s), disposed on the housing. Accordingly, when the subunit is removed from the compartment, the communication module remains, fixed to the enclosure framework. The mounting bracket includes a hinge that allows the communication module to pivot with respect to the compartment to provide access to the features.

Abstract: A disconnect mechanism, an electrical component assembly including the disconnect mechanism, and an electrical circuit protector in turn including the electrical component assembly. The disconnect mechanism includes a carriage, as well as a switch actuator connected to the carriage for moving the carriage between a switch-closed position and a switch-open position. A contactor is mounted to the carriage so as to move with the carriage, the contactor including first and second contactor terminals and providing selective electrical connection between the contactor terminals. A movable disconnect switch contact is connected to the first contactor terminal, and is movable with the carriage and the contactor. A fixed disconnect switch contact is positioned for selective engagement with the movable disconnect switch contact as the carriage moves to the switch-closed position.

Abstract: The invention provides a data storage system for connection to a primary power source, the data storage system comprising: one or more data storage media; one or more interfaces, each interface able to connect to at least one of the data storage media so as to couple power from the primary power source to the at least one of the data storage media; one or more energy modules, each energy module being able to connect to an interface for providing back-up power to the one or more of the data storage media in the event of a failure of the primary power source.

Abstract: A cabinet structure for a switchgear assembly. The cabinet structure includes a cabinet having upper and lower vents and a breaker cradle for holding a circuit breaker having primary disconnects for connecting the circuit breaker to bus bars. The cabinet further includes an air passageway located between the upper and lower vents, wherein the air passageway extends vertically through the primary disconnects and the cabinet. Further, the cabinet includes a fan module having at least one fan for drawing outside air through the lower vent, the air passageway and the primary disconnects for cooling the primary disconnects.

Abstract: A drawout unit that disconnects both polarities of DC current from a DC source, when all poles are used for one of the polarities leaving no pole available to disconnect the other polarity. The drawout unit includes a disconnect device having a four-pole switch, and all four poles are series-connected to the positive (ungrounded) polarity. A separate drawout module with its own housing is connected to the negative (grounded) polarity, and together, the disconnect device and the drawout module are positioned in a cradle with a racking mechanism for racking both the device and the module in and out of the cradle simultaneously, thereby obtaining total isolation of both polarities. In this configuration, the installer has the option to ground the negative polarity, while leaving the positive polarity ungrounded. The drawout module has a through bar conductor that passes the negative polarity of the DC current through the drawout unit.

Abstract: A rear panel for a draw-out circuit breaker includes a metal plate having a pair of rectangular cutouts. Two bushing blocks are joined together and at least partially extend through the cutouts. Each molded bushing block includes three bushings, each of which carry an electrical conductor that is over-molded therein.

Abstract: Methods, systems, apparatus and devices for an arc resistant electrical enclosure that includes a duct system of adjacent pressure relief chambers separated by flame arresting ventilation partitions to provide a torturous mechanical maze to relieve internal pressure and extinguish internal hot flames within the flame arresting duct system prior to exiting the enclosure expelling gasses into the external environment. The adjacent partitioned pressure relief chambers for routing pressure and or flames through the duct system with ninety degree turns from one pressure relief chamber into the next adjacent pressure relief chamber. In an embodiment, a set of ventilation panels is located within one or more of the adjacent pressure relief chambers and each next pressure relief chamber can have a volume that is less than the volume in the preceding chamber.

Abstract: A drawout unit that disconnects both polarities of DC current from a DC source, when all poles are used for one of the polarities leaving no pole available to disconnect the other polarity. The drawout unit includes a disconnect device having a four-pole switch, and all four poles are series-connected to the positive (ungrounded) polarity. A separate drawout module with its own housing is connected to the negative (grounded) polarity, and together, the disconnect device and the drawout module are positioned in a cradle with a racking mechanism for racking both the device and the module in and out of the cradle simultaneously, thereby obtaining total isolation of both polarities. In this configuration, the installer has the option to ground the negative polarity, while leaving the positive polarity ungrounded. The drawout module has a through bar conductor that passes the negative polarity of the DC current through the drawout unit.

Abstract: A communication system is provided for a motor control center. The motor control center includes an enclosure and a plurality of subunits. The enclosure comprises a framework for dividing the enclosure into a plurality of compartments. The subunits are removably disposed within the compartments. The communication system includes a mounting bracket fixedly attached to the framework, within a corresponding one of the compartments, and a communication module mounted on the mounting bracket. The communication module includes a housing and a number of features such as, for example and without limitation, a DIP switch and electrical connector(s), disposed on the housing. Accordingly, when the subunit is removed from the compartment, the communication module remains, fixed to the enclosure framework. The mounting bracket includes a hinge that allows the communication module to pivot with respect to the compartment to provide access to the features.

Abstract: Embodiments provide a circuit breaker racking apparatus having a frame configured to couple to a switchgear section configured to receive a circuit breaker; a coupling operable to couple to a racking handle of the circuit breaker to be racked to or from the switchgear section; and a drive member coupled to the coupling and remotely operable to rotate the coupling and racking handle to accomplish racking of the circuit breaker. System and method aspects are provided, as are other aspects.

Abstract: A sealed electrical enclosure for use in hazardous locations for enclosing circuit breakers having a bottom housing and a top housing with a labyrinth joint, a serrated joint, or combination of both being formed therebetween, a first aperture extending through a first end wall of the bottom housing and positioned adjacent a first contact terminal of a first circuit breaker, the first aperture further including a first metal bus extending therethrough and in electrical contact with the first contact terminal, and a second aperture extending through a second end wall of the bottom housing and positioned adjacent a second contact terminal of the first circuit breaker, the second aperture further including a second metal bus extending therethrough and in electrical contact with the second contact terminal, and a first actuating mechanism positioned on the top housing adapted for manipulating a switch of the first circuit breaker.

Abstract: An identification system is provided for an electrical system. The electrical system includes a switchgear enclosure, a number of electrical switching apparatus, and a racking mechanism movably coupling the electrical switching apparatus to the enclosure. The identification system includes a control mechanism having a controller and a plurality of software programs. The controller includes a number of inputs from a corresponding one of the electrical switching apparatus, and a number of outputs to the racking mechanism. Each software program provides functionality to the outputs to control racking movement of a predetermined type of electrical switching apparatus. Responsive to the inputs from the electrical switching apparatus, the controller identifies the predetermined type of electrical switching apparatus, and then automatically selects a corresponding one of the software programs to control movement of the electrical switching apparatus.

Abstract: Provided is a GIS (Gas Insulated Switchgear) with a withdrawable circuit breaker unit including a main bus compartment having a main bus-bar unit, a transfer bus compartment including a transfer bus-bar unit, a sealing circuit breaker compartment including a circuit breaker unit and an outgoing compartment including a current transforming unit and a cable terminal being electrically coupled to the transfer bus-bar unit. The circuit breaker unit is contained in the sealing circuit breaker compartment that is separately independent from other compartments. The circuit breaker unit is withdrawn and inserted without interrupting power supply of the outgoing compartment. The circuit breaker unit is electrically coupled to or isolated with the main bus-bar unit and the current transforming unit according to whether the circuit breaker unit is withdrawn from or inserted to the sealing circuit breaker compartment. The sealing circuit breaker compartment and the outgoing compartment do not share insulation gas.

Abstract: A converter arrangement comprising a switchgear cabinet for a plurality of converter assemblies forming respective main modules and each consisting of submodules, formed as a switching module and a capacitor module. The switchgear cabinet has connection devices for electrical connection of the converter assemblies and also, for each converter assembly, a rail system for the mechanical arrangement thereof. The capacitor module has a DC voltage contact device for electrical connection to the assigned switching module, and also sliding elements. The switching module has a cooling device, power semiconductor modules and also dedicated sliding elements. The sliding elements of the submodules are arranged in a stacked manner in the same rails of the rail system of the switchgear cabinet.

Abstract: A system and method for connecting supply power to motor control components includes use of a motor control center subunit with moveable supply power contacts. After a motor control center subunit is secured into a motor control center compartment, the supply power contacts may be advanced to engage supply power buses. For disconnection, the supply power contacts may be refracted and isolated from the buses before physical removal of the subunit.

Abstract: A circuit breaker interlock apparatus can include a circuit breaker, a first moveable arm that is moveable when the circuit breaker is open, a second moveable arm pivotally coupled to the first moveable arm that is movable when the first moveable arm is moveable and a blocking arm, configured to interlock with the second movable arm.

Abstract: A switch arrangement for an electrical switchgear comprising a first bus, a second bus and a load connection. The switch arrangement comprises a breaker; wherein said breaker is moveable in said switchgear between a first position and a second position, such that in use, when said breaker is in said first position and closed it electrically connects said first bus to said load connection, and when said breaker is in said second position and closed it electrically connects said second electrical bus to said load connection, with said first electrical bus disconnected from said load connection.

Abstract: A subunit is provided for a motor control center including an enclosure, a number of compartments, a plurality of power lines, and a number of covers for covering the compartments. The subunit includes a housing removably disposed within a corresponding one of the compartments, a plurality of electrical contacts movably coupled to the housing, and an actuating assembly for moving the electrical contacts into and out of electrical contact with the power lines. The subunit further includes at least one of a locking assembly, a panel assembly, and a secondary disconnect assembly. The locking assembly locks the position of the electrical contacts and restricts access to the actuating assembly. The panel assembly is pivotable and translatable with respect to the subunit housing. The secondary disconnect assembly is independent from the actuating assembly in order that movement of the electrical contacts does not move the secondary disconnect assembly.

Abstract: An identification system is provided for an electrical system. The electrical system includes a switchgear enclosure, a number of electrical switching apparatus, and a racking mechanism movably coupling the electrical switching apparatus to the enclosure. The identification system includes a control mechanism having a controller and a plurality of software programs. The controller includes a number of inputs from a corresponding one of the electrical switching apparatus, and a number of outputs to the racking mechanism. Each software program provides functionality to the outputs to control racking movement of a predetermined type of electrical switching apparatus. Responsive to the inputs from the electrical switching apparatus, the controller identifies the predetermined type of electrical switching apparatus, and then automatically selects a corresponding one of the software programs to control movement of the electrical switching apparatus.

Abstract: A subunit is provided for a motor control center including an enclosure, a number of compartments, a plurality of power lines, and a number of covers for covering the compartments. The subunit includes a housing removably disposed within a corresponding one of the compartments, a plurality of electrical contacts movably coupled to the housing, and an actuating assembly for moving the electrical contacts into and out of electrical contact with the power lines. The subunit further includes at least one of a locking assembly, a panel assembly, and a secondary disconnect assembly. The locking assembly locks the position of the electrical contacts and restricts access to the actuating assembly. The panel assembly is pivotable and translatable with respect to the subunit housing. The secondary disconnect assembly is independent from the actuating assembly in order that movement of the electrical contacts does not move the secondary disconnect assembly.

Abstract: An exhaust system for exhausting gases and molten debris caused by an electric arc within a switchgear. The exhaust system includes a switchgear having lower and upper compartments and an exhaust unit externally mounted to the switchgear. A wall panel of the switchgear includes blow out panels coinciding with openings in the lower compartment and corresponding ventilation flaps in a top surface of the exhaust unit to exhaust gas from the lower compartment out the blow out panels in a vertical direction, exiting through the flaps. The upper compartment includes ventilation flaps for exhausting gas in a vertical direction directly through the flaps and optionally through side-mounted blow out panels that communicate with the vertical vent path to the flaps in the top of the exhaust unit. A bus compartment in the exhaust unit includes a vent path to flaps in the top of the exhaust unit for exhausting gas produced by bus arcing.

Abstract: A power drive stack system comprises a series of power electronic modules, each one of the modules containing power components and module contacts electrically and mechanically aligned for building a portion of a complete AC/DC drive stack. The modules utilize a common set of circuit connection points that are matched to a common set of physical connection points. The modules can be plugged together like building blocks to form a large variety of AC/DC drive stacks that can be tailored to meet an exact system requirement. The drive stack may be used in conjunction with a controller to adjust the torque and speed of an AC/DC electric motor.

Abstract: A plug-in housing module for forming an-explosion-proof switchgear/distribution panel including a number of plug-in points, where when the plug-in housing module is in a plugged-in position at a corresponding plug-in point of the number of plug-in points, the plug-in housing module is brought into contact with electrical connection devices and is detachably fixed to carrier rails of a frame of the switchgear/distribution panel, the plug-in housing module including at least one switching device for switching between a locking position and a release position, and when the at least one switching device is in the release position, the plug-in housing module can be moved out of the plugged-in position into a separation position, where in the separation position, the contact with the electrical connection devices is interrupted, while maintaining a flameproof mechanical connection.

Abstract: A solid insulated bus switchgear including a cabinet having unit and bus rooms, first and second switching units, each having a circuit breaker, current transformer, zero-phase sequence current transformer, and instrument voltage transformer, main buses, a communication bus linked to the main buses, and connected to the first and the second switching units, and first and second leader buses, the first connected to the first switching unit, the second connected to the second switching unit. Each switching unit has a movable cart, the circuit breaker mounted on the cart, and a frame assembly. Two terminals are disposed on the back of the circuit breaker, one connected to a fixed electrode and the other connected to a movable electrode of the circuit breaker. The two terminals are connected to the communication bus and to the first or second leader bus through air bushings.

Abstract: Fused load interrupters have up to now used claw terminals or screw connections for connecting to horizontal busbars in a switchgear unit. Fused load interrupters have not been suitable until now for connecting to vertical busbars in switchgear units. At least one embodiment of the invention provides a fused load interrupter with plug contacts, such as are known from load interrupters with fuses, thereby allowing fused load interrupters to replace the more expensive load interrupters with fuses in switchgear units with vertical busbars.

Abstract: A subunit is provided for a motor control center including an enclosure, a number of compartments, a plurality of power lines, and a number of covers for covering the compartments. The subunit includes a housing removably disposed within a corresponding one of the compartments, a plurality of electrical contacts movably coupled to the housing, and an actuating assembly for moving the electrical contacts into and out of electrical contact with the power lines. The subunit further includes at least one of a locking assembly, a panel assembly, and a secondary disconnect assembly. The locking assembly locks the position of the electrical contacts and restricts access to the actuating assembly. The panel assembly is pivotable and translatable with respect to the subunit housing. The secondary disconnect assembly is independent from the actuating assembly in order that movement of the electrical contacts does not move the secondary disconnect assembly.

Abstract: A subunit is provided for a motor control center including an enclosure, a number of compartments, a plurality of power lines, and a number of covers for covering the compartments. The subunit includes a housing removably disposed within a corresponding one of the compartments, a plurality of electrical contacts movably coupled to the housing, and an actuating assembly for moving the electrical contacts into and out of electrical contact with the power lines. The subunit further includes at least one of a locking assembly, a panel assembly, and a secondary disconnect assembly. The locking assembly locks the position of the electrical contacts and restricts access to the actuating assembly. The panel assembly is pivotable and translatable with respect to the subunit housing. The secondary disconnect assembly is independent from the actuating assembly in order that movement of the electrical contacts does not move the secondary disconnect assembly.

Abstract: A subunit is provided for a motor control center including an enclosure, a number of compartments, a plurality of power lines, and a number of covers for covering the compartments. The subunit includes a housing removably disposed within a corresponding one of the compartments, a plurality of electrical contacts movably coupled to the housing, and an actuating assembly for moving the electrical contacts into and out of electrical contact with the power lines. The subunit further includes at least one of a locking assembly, a panel assembly, and a secondary disconnect assembly. The locking assembly locks the position of the electrical contacts and restricts access to the actuating assembly. The panel assembly is pivotable and translatable with respect to the subunit housing. The secondary disconnect assembly is independent from the actuating assembly in order that movement of the electrical contacts does not move the secondary disconnect assembly.

Abstract: The present disclosure relates to a telecommunications distribution cabinet having a cabinet housing in which a first swing frame and a second swing frame are pivotably mounted.

Abstract: A converter arrangement comprising a switchgear cabinet for a plurality of converter assemblies forming respective main modules and each consisting of submodules, formed as a switching module and a capacitor module. The switchgear cabinet has connection devices for electrical connection of the converter assemblies and also, for each converter assembly, a rail system for the mechanical arrangement thereof. The capacitor module has a DC voltage contact device for electrical connection to the assigned switching module, and also sliding elements. The switching module has a cooling device, power semiconductor modules and also dedicated sliding elements. The sliding elements of the submodules are arranged in a stacked manner in the same rails of the rail system of the switchgear cabinet.

Abstract: A drawout system with an interface proving a lower ingress protection rating is provided. The system includes a flange mounted to a door. A sleeve is movably mounted to the door adjacent to the flange. As the circuit breaker is moved from a racked-in position to a test position to a racked-out position, the sleeve moves with the circuit breaker and avoids creating exposure to electrical components within the drawout. The drawout system allows the operator to operate the circuit breaker with the door open or closed.

Abstract: Withdrawable racks for power circuit breakers should be reliably switched. To this end, the movement of the plates of a shutter in the withdrawable rack can be blocked so that the shutter is not permitted to open unintentionally. In a special embodiment, the opening mechanism for the plates can have two V-shaped linkages that are connected to a telescopic rod. The telescopic rod can be locked by a locking element so that the shutter plates, which can be moved by sliders, can no longer be displaced.