Abstract: A metal clad switchgear assembly comprising multiple compartments defined within an electrical enclosure is provided. The compartments interchangeably accommodate electrical components, for example, current transformers, a circuit breaker, a control power transformer, an epoxy encapsulated potential transformer, etc., electrical cables, and bus bars in predetermined positions for allowing front access and/or rear access to them. One or more compartments are configured for enabling the electrical cables to enter into and/or exit out from the electrical enclosure for allowing front and/or rear access to the electrical cables. A mounting block assembly is positioned in one or more of the compartments for mounting, enclosing, and providing front access to the electrical components.

Abstract: Electrical switchgear comprising electrical switching equipment for a multi-phase electrical power distribution system, a supporting structure for a bus assembly for supplying electrical current to the switching equipment, and a plurality of spaced buses mounted on the supporting structure each for connecting the switching equipment to respective phases of the multi-phase electrical power distribution system. Each bus comprises a plurality of substantially co-planar, spaced, elongated flat conductors arranged with at least one longitudinal edge surface of each conductor in that bus opposed to and spaced from a longitudinal edge surface of another conductor in that same bus, and a connector at each end of said conductors for connecting the plurality of flat conductors in each bus to each other.

Abstract: The subject of the invention is an electric power switchgear, an insulating radiator, and a method for installing the radiator in an electric power switchgear, and in particular in a medium or high voltage switchgear. The electric power switchgear comprising working elements placed in the housing and connected with busbars and branches, and cooled with air, is characterized in that it contains at least one insulating radiator made of thermoplastic material of increased thermal conductivity ??2 W/mK, which is placed in the electric field of the switchgear and which is connected by a non-permanent fastening to at least one busbar or/and at least one branch. The insulating radiator designed for the switchgear is an injection molding including a base plate to whose top face a system of heat evacuating elements of identical or diverse shape is attached, and to its side surfaces elastic assembly catches are fixed.

Abstract: A laminated bus bar is applied to a main wiring circuit of an electric power converter and connected to a semiconductor module. The laminated bus bar includes insulator plates laminated together, and conductors interposed between the insulator plates. Each conductor includes a connection terminal section led out in accordance with an arrangement of a main circuit terminal on the semiconductor module. A creepage groove is formed on an edge of each of the insulator plates in accordance with a position between the connection terminal sections. The laminated bus bar facilitates elongation of the creepage distance between the connection terminals.

Abstract: Embodiments provide a crossing bus support apparatus and connectors thereof. The crossing bus support apparatus includes a body structure having a first portion with a plurality of phase bus slots, the phase bus slots adapted to receive a plurality of crossing buses, a first connector on a first end having dual protrusions each protrusion having an interlockable feature; and a second connector on a second end having dual protrusions each protrusion having an interlockable feature. The crossing bus support apparatus may be used in pairs to capture crossing buses into the phase bus slots. Systems, assemblies, connectors, and methods of installing and utilizing the crossing bus support apparatus are provided, as are other aspects.

Abstract: A bus support system is provided. The bus support system includes a bus support having a plurality of vertical channels configured to receive vertical bus conductors, each of the plurality of vertical channels having a rear protrusion on a rear side of the bus support. The bus support system also includes a plurality of add-on bus support braces disposed on the rear side of the bus support and configured to contact the plurality of channels to limit a movement of the vertical bus conductors during a high current event.

Abstract: An inverter device is provided with a semiconductor device, an input terminal, an intermediate terminal, an output terminal and an insulated substrate on which the semiconductor device, the input terminal, the intermediate terminal and the output terminal are mounted. Each of the input terminal, the intermediate terminal and the output terminal is a separated module such that one of the input terminal, the intermediate terminal and the output terminal is spatially independent from the other.

Abstract: The vacuum insulated switchgear includes: a housing enclosing a control compartment, a switch compartment, and a busbar compartment, each of the three compartments being partitioned by a metallic earthing plate; a first busbar and second busbar extended from an adjacent panel, in the busbar compartment; and a first busbar-connecting bushing and second busbar-connecting bushing making the first and second busbars connectible/disconnectible; a double-breaking three position vacuum switch, two sets of earthing switches, the first busbar-connecting bushing, and the second busbar-connecting bushing being integrally molded to form a switch provided on an electrical phase-by phase basis independently, wherein the switches for three phases are arranged in order side by side in the housing.

Abstract: The invention relates to a gas-insulated high-voltage switchgear, comprising at least one bus bar with three phase conductors, whereby each phase conductor is connected to the input of a respectively provided bus bar section. The phase conductor and the bus bar section are arranged in a three-phase bus bar module with three single-phase power switches, each arranged in a separate power switch housing and each bus bar section is connected at the output therefrom to a respectively provided power switch.

Abstract: A bus bar assembly used for establish electric connections with semiconductor modules of an electric power converter. The bus bar assembly includes a resinous body, a first and a second bus bar to which terminals of the semiconductor modules are to be connected. Each of the first and second bus bars includes a plate body and a plurality of connecting terminals extending from the plate body substantially in parallel to a major surface of the plate body. At least a portion of the body plate of the first bus bar is disposed inside the resinous body. The second bus bar is mounted at the plate body on the resinous body and laid to overlap the first bus bar at a given distance away from the first bus bar. This structure minimizes the misalignment between the first and second bus bars after the resinous body is formed.

Abstract: A solid insulated switchgear having at least one circuit switches for switching a three-pole AC circuit includes a plurality of bus-bars for pole. Each of the bus-bars for pole being providing correspondingly for each pole comprises a ring-shaped bus-bar portion electrically connecting the arc extinguishing mechanisms for the same pole, and each having an internal electrical conductor portion and an external solid insulated mold portion in which the conductor portion is built; and a plurality of extended connecting portions respectively extended from the ring-shaped bus-bar portion while being space apart from one another in a circumferential direction so that the plurality of circuit switches are connected in the state in which the plurality of circuit switches are separated from one another.

Abstract: A device for connecting an electric line to a connection terminal for direct or indirect connection with a circuit breaker, which comprises at least one first electrically conducting body having a first end portion intended to be operatively connected to the terminal, and a second end portion intended to be operatively connected to a conductor element of the electric line, and at least one thermal conducting body comprising a hermetically sealed cavity containing a cooling fluid. The thermal conducting body is operatively coupled to the first electrically conducting body such that the hermetically sealed cavity has a first surface arranged in proximity to the first end portion and a second surface arranged in proximity to the second end portion.

Abstract: Power connectors and switchgear assemblies are presented herein. A power connector is disclosed for electrically coupling a circuit breaker to an electrically conductive bus bar. The connector includes a fork-shaped head for electrically connecting to the circuit breaker, and a base for electrically connecting to the bus bar. A yoke extends between and connects the base to the fork-shaped head. The yoke has a transverse cross-section with a length that is greater than a width. The length and/or width of the transverse cross-section varies between respective ends of the transverse cross-section.

Abstract: An electrical enclosure includes a housing having a first end, an opposite second end, and a plurality of sides disposed therebetween to define an internal volume; an electrical busway having a plurality of electrical bus members; a plurality of phase-to-phase arc length limiters, each of the phase-to-phase arc length limiters being electrically connected to a corresponding one of the electrical bus members, each of the phase-to-phase arc length limiters having a first edge and a second edge, the first edge establishing a first gap to an adjacent one of the phase-to-phase arc length limiters; and a phase-to-ground arc length limiter electrically connected to the housing, the phase-to-ground arc length limiter having a number of members structured to attach an arc, each of the number of members having a number of arc attachment portions establishing a second gap to the second edge of the phase-to-phase arc length limiters.

Abstract: A busbar includes a first busbar component as a busbar body and a second busbar component connected thereto. The first busbar component is made of an electrically-conductive metal material having superior spring property. The first busbar component includes a male-terminal-connecting portion for clamping a male terminal of a device and a power input part provided upstream of the male-terminal-connecting portion. The second busbar component is made of an electrically-conductive metal material having electrical conductivity superior to that of the first busbar component. The second busbar component is connected to the first busbar component via a first section of the second busbar component in register with the power input part of the first busbar component and a second section of the second busbar component in register with a portion of the first busbar component, the portion being upstream of the male-terminal-connecting portion at which the current is divided.

Abstract: An electric power distribution arrangement having an electric conductor for carrying a high voltage, a first pair of bodies provided on opposite sides of the conductor as seen in a first direction cross-wise to a longitudinal axis of the conductor, and a second pair of bodies provided on opposite sides of the conductor as seen in a second direction cross-wise to the longitudinal axis. The bodies of the first and second pair of bodies are arranged to be electrically disconnected from the conductor, and the spacing between the bodies of the first pair is larger than the spacing between the bodies of the second pair. At least one of the bodies of at least one of the first and second pair comprises a second current conductor, and at least one of the bodies of at least one of the first and second pair comprises a wall element of an encapsulation inside which the conductor is arranged.

Abstract: Embodiment relate to an extruded high power electrical distribution. The bus can be employed in a MCC, a drive cabinet, or any such electrical enclosure to facilitate transmission of power. A body of the bus includes an elongate metal extrusion with first and second ridges extending along a length of the body from opposite edges of the body. Further, the bus includes a first groove and a second groove extending along the length of the body and into the body from a face of the body such that each of the first and second grooves comprises a cross-section having a narrow passage extending from the face into a broader cavity within the body. Additionally, the bus includes machined openings into each groove, wherein each of the machined openings is wider than the width of the corresponding groove to which it provides access.

Abstract: This disclosure discloses a control unit comprising a plurality of controllers, each controller having a bus bar portion having: a left and a right bus bar holder; an upper and an lower common bus bar; an upper and an lower rotating bus bar; a upper and a lower connecting body; wherein each bus bar holder has protrusions forming a gap, the upper and the lower rotating bus bar are configured to be changed between a first mode that the upper and the lower rotating bus bar engages rotatably with the left bus bar holder, and a second mode that the upper and the lower rotating bus bar are tightened and secured to the left bus bar holder, and the upper and the lower rotating bus bar of one controller in the second mode is connected in close contact with the upper and the lower common bus bar of another controller.

Abstract: An electrical enclosure includes a housing having a first end, an opposite second end, and a plurality of sides disposed therebetween to define an internal volume; an electrical busway having a number of electrical bus members, wherein at least one of the number of electrical bus members has a first bus member, a second bus member and a number of fusible links electrically connected between the first bus member and the second bus member, wherein the at least one of the number of electrical bus members is structured to electrically conduct a rated current, wherein the number of fusible links are structured to electrically conduct the rated current, and wherein the number of fusible links are structured to vaporize responsive to a current which is substantially greater than the rated current.

Abstract: Embodiments of the present invention provide electrical bussing for multichip leadframes. In various embodiments, a leadframe may comprise a first die paddle for receiving a first microelectronic device, a second die paddle for receiving a second microelectronic device, and at least one electrical bus disposed between the first die paddle and the second die paddle.

Abstract: The present invention is to provide a circuit board capable of loading high electrical current, which comprises an insulation plate and a plurality of conductive plates each positioned on the insulation plate by riveting. A plurality of first insertion holes of the insulation plate are aligned with a plurality of second insertion holes of the conductive plates, respectively, so that the aligned first and second insertion holes of the circuit board can be welded with a plurality of electric components (such as resistors, capacitors, fuses, etc.). Therefore, the insulation plate and each of the conductive plates can be easily combined with each other by riveting to form a finished product of the circuit board without some complicated steps including exposure, development and etching, so that the manufacturing process of the circuit board capable of loading high electrical current can be efficiently simplified.

Abstract: It is an object to provide gas-insulated switchgear that occupies less installation space, in which the number of bellows to be used can be reduced, and that can minimize a work range in disassembling at addition or accident, and in reassembling. In double-bus gas-insulated switchgear in which a bus-side device is arranged above a breaker to reduce installation space to be occupied, a bellows is arranged between bus-side devices arranged vertically to each other, and under a support frame of the breaker, another support frame that can be separated therefrom is arranged, thereby enabling disassembling of a lower bus-side device alone.

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: A joint connector has a housing (1) with cavities (3) into which female terminal fittings (2) are insertable, and a busbar (5) to be mounted in the housing (1). The busbar (5) has tabs (6) to be connected to the respective female terminal fittings (2) and adapted to short the female terminal fittings (2) to each other. The busbar (5) includes a base (15) used to mount the busbar (5) into the housing (1) and the tabs (6) are cantilevered from the base (15). The base (15) includes resilient legs (17) for allowing displacements of the tabs (6) in a direction crossing a longitudinal direction of the tabs (6). The tabs (6) can be displaced by displacements of the resilient legs (17) to absorb a misalignment between the tab pieces (6) and the female terminal fittings (2).

Abstract: One or more infrared transmitting ports are placed in the insulating housing of standard switchgear components to allow far infrared viewing of internal conductive components permitting earlier and more precise location of possible thermal failure through thermographic monitoring.

Abstract: A terminal is provided with a support portion configured to be mounted on a circuit board and having electrical insulation property, and a bus bar supported on the support portion and having electrically conductive property. The bus bar includes an external connecting portion configured to be electrically connected to external equipment, a first connecting portion configured to be electrically connected to the circuit board, and a second connecting portion configured to be electrically connected to another circuit board spaced from the circuit board, without passing through the circuit board.

Abstract: A busbar assembly for an inverter module has a power module, a capacitor module with at least one capacitor, and a battery all interconnected by a busbar. The busbar includes a base busbar portion that is electrically coupled to the battery and a branch busbar portion that extends from the base busbar to the power module and that electrically connects to the capacitor module at points located between the base node and the power module.

Abstract: A flange end stub for an electrical busway system is provided. The flange end stub includes a flange plate having a first and second tab extending perpendicular to a first surface. A pair of joint side plates is coupled to the first and second tab with one or more conductors extending through the flange plate in between the joint side plates. A first and second bracket is coupled in between the joint side plates on either side of the conductors. Covers are mounted to the first and second brackets and extend over the conductors and any joint assembly that is attached. The covers and brackets cooperate to provide ingress protection.

Abstract: The present invention relates to an insulating element (1) for producing an insulating and supporting device for busbars to install in cabinets for low voltage distribution switchboards. The invention also relates to an insulating and supporting device for busbars comprising the insulating element which essentially comprises a body made of insulating material (5) which extends along a longitudinal axis (100) between two end surfaces (8) transverse to this axis. The body made of insulating material (5) comprises a plurality of lateral surfaces (10, 20) which extend between the end surfaces (8) in the direction of said longitudinal axis (100). At least a first (10) and a second (20) of these lateral surfaces are provided with longitudinal grooves (11, 21) defined between connecting portions (15). In particular, the longitudinal grooves (11) defined on the first lateral surface (10) have a longitudinal extension (L1) differing from that (L2) of the grooves (21) defined on the second lateral surface (20).

Abstract: An electrical conductor mechanism is provided for an electrical bus assembly of a power distribution system, such as a residential load center, which includes a number of electrical switching apparatus, such as circuit breakers. The electric conductor mechanism includes at least one planar member having first and second opposing sides. The first side is attached to a corresponding stab of the electrical bus assembly. The second side is electrically connected to a corresponding one of the circuit breakers, thereby electrically connecting it to the stab of the electrical bus assembly. An electrical bus assembly and a power distribution system employing the aforementioned electrical conductor mechanism are also disclosed.

Abstract: The invention relates to a busbar pack comprising n busbars (2) and at least n?1 insulating bars (4) the surfaces of which project beyond the busbars (2), one insulating bar (4) being interposed between two busbars (2), said stack of bars (2, 4) being immobilized in their position relative each other by devices. The invention is characterized in that at least one inner busbar (2) is provided with a reticular bar (6) on both sides thereof and has perforations (14) that are arranged to match crossbars (12) of corresponding reticular bars (6). The invention allows production of a busbar pack at least the inner busbar (2) of which is convection-cooled, said busbar cooling system being producible at low costs.

Abstract: A switchgear includes a chassis which is partitioned by metal earthed plates and includes a bus bar section located at a central portion, a switch section located below the bus bar section, a cable section located at a rear surface side, and a control section located at a front surface side; an air-insulated earthed disconnecting switch provided in the switch section; and a manipulating device. The switch section is separable from the chassis, and is configured as a case having a semi-closed structure which allows air to pass therethrough but prevents particles of oil and water from passing therethrough.

Abstract: A bus assembly is provided for a motor control center (MCC). The MCC includes an enclosure, an electrical switching apparatus, such as a circuit breaker, which is removably coupled to the enclosure, and at least one subunit. The bus assembly includes a horizontal bus, a number of vertical buses, and a number of short circuit protective devices (SCPDs), such as fuses or circuit breakers. The horizontal bus is electrically connected to the circuit breaker, each vertical bus electrically connects a corresponding subunit to the horizontal bus, and each SCPD is disposed between the horizontal bus and a corresponding one of the vertical buses. The SCPDs reduce the peak current level and arc flash energy experienced by the subunits, and relatively quickly clear the arcing event.

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 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: An exemplary encapsulated high-voltage switch is disclosed which contains a heat-generating current conductor, a metal encapsulation surrounding the current conductor, and a cooling element. A cooler of the cooling element is fixed on a part of the encapsulation that is embodied as a mounting plate, and has cooling ribs arranged outside the encapsulation. In a section of the cooler that is embodied as a cooling block, at least a portion of the cooling ribs is arranged parallel to the mounting plate and is held on a heat distributor fixed to the mounting plate in such a way that on both sides of the heat distributor in each case one of two groups of cooling channels arises, in which the cooling channels are in each case arranged in the manner of a sandwich. The cooling channels can, for example, be oriented in a manner inclined relative to a horizontal axis of the switch.

Abstract: A switchgear for a ground distribution line includes a base frame, vacuum switch units each installed on the base frame and configured by laying a first vacuum interrupter and a second vacuum interrupter within an epoxy resin mold, the first vacuum interrupter opening or closing a main circuit between a power source side and a load side and the second vacuum interrupter opening or closing a ground circuit, a main circuit interface protruding from one side of each vacuum switch unit, and a phase connector interface protruding from the other side of each vacuum switch unit in the same direction as the main circuit interface.

Abstract: Described is a distribution panel for electrical switchgear, in particular for medium-voltage distribution switchgear. The distribution panel is provided, in at least one embodiment, with at least one bus bar and at least one transfer rail, wherein the bus bar is connected via a circuit breaker to an outlet terminal and wherein the transfer rail is also connected to the outlet terminal. The circuit breaker, in at least one embodiment, is housed inside a circuit breaker housing and the transfer rail and the electrical connection from the transfer rail to the outlet terminal are arranged so as to bypass the circuit breaker housing.

Abstract: A power converter apparatus that includes a substrate, plate-like positive and negative interconnection members, capacitors, and a cover is disclosed. Pairs of groups of switching elements are mounted on the substrate. The cover is arranged over the substrate to encompass the switching elements, the positive interconnection member, the negative interconnection member, and the capacitor. The positive interconnection member and the negative interconnection member each have a terminal portion that is joined to a circuit pattern on the substrate by ultrasonic bonding.

Abstract: A power converter apparatus that includes a substrate, plate-like positive and negative interconnection members, and capacitors is disclosed. Pairs of groups of switching elements are mounted on the substrate. Each of the positive interconnection member and the negative interconnection member has a terminal portion. The terminal portion has a joint portion that is electrically joined to a circuit pattern on the substrate. The switching elements are arranged in the same number on both sides of the joint portion of at least the positive interconnection member of the positive and negative interconnection members.

Abstract: The invention relates to a gas-insulated high-voltage switchgear, comprising at least one bus bar with three phase conductors, whereby each phase conductor is connected to the input of a respectively provided bus bar section. The phase conductor and the bus bar section are arranged in a three-phase bus bar module with three single-phase power switches, each arranged in a separate power switch housing and each bus bar section is connected at the output therefrom to a respectively provided power switch.

Abstract: A power converter apparatus includes a substrate 22 on which switching elements Q, Q1 to Q6 are mounted, positive and negative terminal interconnection members 27, 28 mounted on the substrate, and a capacitor 17 having a positive terminal 17a connected to the main body of the positive terminal interconnection member 27 and a negative terminal 17b connected to the main body of the negative terminal interconnection member 28. The interconnection members each have a plate-like main body 27a, 28a that is located above and parallel to the substrate 22. The main bodies of the interconnection members are stacked to be close to each other while being electrically insulated from each other. Each of the positive terminal interconnection member and the negative terminal interconnection member further includes a plate-like extension 27b, 28b that extends from the corresponding main body toward the substrate, and a terminal portion 27c, 28c that extends from the extension and is joined to the substrate.

Abstract: A positioning block and method for spacing riser bus bars includes an insulating material body forming recesses along a longitudinal axis of the block, each recess for receiving an electric riser bus bar therein. A binding feature is formed adjacent to at least one wall of the recesses for securing the riser bus bar within the recess. A locator feature is formed between the walls of each recess for aligning the riser bus bar within the recess.

Abstract: The invention relates to an electrical switchgear comprising at least one panel, especially for low voltage, a device compartment especially for receiving inserts, switching devices, control devices, and similar, a busbar compartment in which the busbars are accommodated in a horizontal direction, a multi-terminal busbar compartment in which the multi-terminal busbars extend vertically, and at least one wire compartment. The wire compartment for control wires and signal wires is located on one side of the panel while the wire compartment for power wires is placed on the other side of the panel.

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: An electric power distribution arrangement having an electric conductor for carrying a high voltage, a first pair of bodies provided on opposite sides of the conductor as seen in a first direction cross-wise to a longitudinal axis of the conductor, and a second pair of bodies provided on opposite sides of the conductor as seen in a second direction cross-wise to the longitudinal axis. The bodies of the first and second pair of bodies are arranged to be electrically disconnected from the conductor, and the spacing between the bodies of the first pair is larger than the spacing between the bodies of the second pair. At least one of the bodies of at least one of the first and second pair comprises a second current conductor, and at least one of the bodies of at least one of the first and second pair comprises a wall element of an encapsulation inside which the conductor is arranged.

Abstract: A bus system for use in electrical distribution equipment includes a generally U-shaped arrangement of conductors for supplying very high amperage (e.g., above 2000 amps) alternating current to the electrical distribution system. Compared to prior-art conductor arrangements, using the present arrangement, the conductors of a phase can be fabricated from less copper, which is an expensive metal. They also achieve better thermal dissipation and current distribution and mitigate skin effects. As a result, resistive losses, which increase with increased temperature, are reduced.

Abstract: A subsea switchgear apparatus including a frame, at least one electrical power inlet mounted to the frame, at least one electrical power outlet mounted to the frame, a distribution chamber mounted to the frame, and at least one canister mounted to the frame. The at least one canister includes a chamber accommodating at least one high voltage circuit breaker. Electrical connections are arranged in the distribution chamber for electrically connecting a respective circuit breaker of a canister to an associated power inlet and power outlet of the switchgear apparatus. The chamber of the respective canister is separated from the distribution chamber by a pressure barrier.

Abstract: A substrate panel is disclosed. The substrate panel may include a pair of clamp contacts, a plurality of bus lines located between the pair of clamp contacts, and a plurality of substrate units supplied with an electric current by way of the plurality of bus lines, where the bus lines closer to the proximal clamp contact are arranged with larger intervals.