Load break switch

Abstract

The present invention provides a load break switch comprising: an enclosure; a basic opening / closing portion which is installed in the enclosure and controls power supply to a load side bus; and a module connector which is installed in the enclosure and is electrically connected to the load side bus, wherein the module connector comprises at least one bus bar which is connected to the basic opening / closing portion and is connected to a power side bus and the load side bus. The bus bar comprises a diagonal short bus bar of which both ends are connected to the basic opening / closing portion in the diagonal direction, thereby obtaining a shortest path connecting structure of the bus bar.

Description

Load switch

[0001] The present invention relates to a load switch, and more specifically, to a load switch having a shortest path connection structure of a busbar.

[0002] Generally, electricity with a voltage of about 154 / 345 / 765 / kV from a power plant is stepped up to ultra-high voltage suitable for transmission and transmitted to a primary substation, and the electricity transmitted to the primary substation is stepped down and supplied to a secondary substation or each consumer.

[0003] Electricity supplied from secondary substations is delivered to the receiving facilities of each consumer through a distribution system consisting of overhead and underground distribution lines. The electricity supplied to the receiving facilities of each consumer is then distributed to extra-high voltage consumers, high voltage consumers, and low voltage consumers who receive electricity through various outdoor transformers. As the number of electricity consumers increases and the patterns of electricity usage become more complex, electricity suppliers install multi-circuit switches and circuit breakers for underground wiring lines at individual locations to switch or cut off the current as needed.

[0004] With existing 3-circuit 3-switch switches, if the number of circuits initially installed matches the number of circuits in use, a separate switch does not need to be installed. However, if additional circuits are required, there is a waste of enormous construction costs (installation of new switches, installation of new conduits, etc.) due to the installation of additional switches, and the inconvenience of having to obtain a permit for occupancy from the local government.

[0005] In addition, for 4-circuit 4-switch switches, if the number of circuits initially installed matches the number of circuits in use, the initially installed switch can be operated as is. However, in the case of switches in areas with severe load fluctuations, it is difficult to determine the appropriate number of circuits initially, so a significant number of the total number of switches operated as idle circuits are occupied, and consequently, enormous initial investment costs are being wasted.

[0006] Generally, in indoor wiring, a distribution board refers to a structure in which switches are installed for each branch circuit at the point where the main line branches off. Such a distribution board consists of a main busbar to which the main power is supplied and branch busbars that receive power from the main busbar and supply it to the load side.

[0007] In addition, a vertical busbar arrangement distribution panel refers to one in which the main busbars and branch busbars are arranged vertically, and such a vertical busbar arrangement distribution panel is configured so that the branch busbars connected to the circuit breakers move up and down depending on whether the circuit breaker operates.

[0008] Conventional switchgear is manufactured with a fixed number of circuits because separating extra-high voltage busbars by circuit is dangerous and prone to failure; furthermore, in areas with severe load fluctuations, it is difficult to initially install switchgear with an appropriate number of circuits.

[0009] If the number of initially installed switchgear circuits exceeds the number of circuits in use, excessive idle circuits result in wasted initial investment costs; conversely, if the number is lower, additional construction costs are required to add circuits.

[0010] FIG. 1 is a diagram illustrating the configuration of a connection terminal module of a basic switching unit, and FIG. 2 is a perspective view illustrating the configuration of a basic switching unit and a module connection unit of a load switch according to the prior art.

[0011] Referring to Figures 1 and 2, we will examine the busbar connection structure of a conventional load switch.

[0012] Most switches include a basic switching unit (200) that controls the power supply to the load-side busbar. The basic switching unit (200) includes a connection terminal module (210) for connecting the device. The connection terminal module (210) is opened and closed according to the internal structure of the device, and terminal terminals made of copper material are located at both ends to be connected to or branched to each circuit. As shown in FIGS. 1 and 2, the conventional switch has a structure in which the positive poles are separated vertically or horizontally, and a busbar (310) is connected to the connection terminal module (210) at the end.

[0013] Also, referring to FIG. 1, the connection terminal module (210) is divided into a load connection terminal module (211) and a power connection terminal module (212). The load connection terminal module (211) and the power connection terminal module (212) are arranged vertically.

[0014] The path length and thickness of the busbar (310) are determined according to the path and configuration connected to the main busbar at each end connection terminal module (210).

[0015] FIG. 3 is a schematic diagram illustrating the configuration of the basic switching part and module connection part of a switch according to the prior art, and FIG. 4 is a front view illustrating the connection structure of a conventional connection terminal module and busbar.

[0016] Referring to FIGS. 3 and 4, depending on the device configuration method, the connection terminal module (210) is connected to the busbar (310) at each pole (load connection terminal module (211) and power connection terminal module (212)) to be connected to the busbar or short-circuited between terminals.

[0017] As described, the path of the busbar (310) is determined according to the location of the connection short circuit. Looking at FIG. 4, the switch connects the busbar (310) from the upper load connection terminal module (211) to the lower busbar. In this case, the load connection terminal module (211) is connected to the upper connection busbar (311) which is connected to the upper side, and the power connection terminal module (212) has a connecting structure in which it is connected to the horizontal short circuit busbar (313) for short circuit. That is, in order to ensure uniformity in the connection of the busbar (310), the conventional switch may have an unnecessary path for the busbar (310) connected to the upper side.

[0018] Korean Patent Publication No. 10-2018-0092394 (hereinafter referred to as Patent Document 1) discloses a method for connecting busbars of a power distribution board, wherein busbars are arranged in multiple rows of two or more, branch busbars are arranged on the front and rear sides thereof, and the branch busbars are brought into close contact with the busbars using a tightening means through the connecting hole of the branch busbar and the space between the busbars.

[0019] Patent Document 1 is configured so that there is no need to drill a connection hole in the main busbar and no need to bend the branch busbar, making the connection simple and eliminating the need for special equipment for the connection, and making it easy to change the connection between the main busbar and the branch busbar due to changes in load, change the position of the branch busbar, and add the branch busbar.

[0020] However, Patent Document 1 is configured to catch a short circuit at only one pole to ensure uniformity of busbar connections, and has the problem of causing excessive waste of material and construction costs due to the occurrence of idle circuits resulting from unnecessary busbar connections.

[0021] Korean Patent Publication No. 10-2014-0049687 (hereinafter referred to as Patent Document 2) discloses a connecting device for a main line busbar and a branch line busbar for a distribution board, comprising a main line busbar having a predetermined length, a branch line busbar mounted in contact with one of the upper or lower surfaces of the main line busbar without a gap, a plurality of first and second leg portions in a vertical orientation having first and second receiving holes formed through them so that the main line busbar and the branch line busbar are stacked and maintained in a cross arrangement, and a clip having a cross connecting portion connecting the upper portions of the first and second leg portions, wherein a fastening screw is fastened to press the upper portion of the cross arrangement busbars that are cross-arranged on the upper portion of the main line busbar through the gap formed on the upper portion of the main line busbar that penetrates the first and second receiving holes.

[0022] Patent Document 2 is configured to make the connection easy and sturdy when connecting a number of branch busbars connected to a main busbar entering from a distribution board or switchboard, and to ensure a consistent and easy contact area, thereby reducing concerns about fire and maintenance due to resistance.

[0023] However, Patent Document 2 has the same problem as the conventional busbar connection structure, which is configured to catch a short circuit at only one pole for the uniformity of the busbar connection, resulting in an idle circuit due to unnecessary busbar connections and causing excessive waste of material and construction costs.

[0024] Therefore, there is a need to develop an economical busbar connection structure and a switch including it, which compensates for the shortcomings of conventional busbar connection structures that only handle short circuits on one pole. By modifying the shape and position of the short-circuit busbar without impairing the use and function of the equipment, it prevents idle circuits caused by unnecessary busbar connections, thereby reducing material and construction costs.

[0025] The present invention has been devised to solve the above-mentioned problem, and the objective of the present invention is to provide a load switch configured such that the shape and position of the short-circuit busbar are modified without impairing the use and function of the device, thereby preventing idle circuits caused by unnecessary busbar connections.

[0026] Another objective of the present invention is to provide a load switch that implements a minimum path connection structure of a busbar.

[0027] Another objective of the present invention is to provide a load switch having an efficient busbar connection structure by implementing a busbar that connects any load connection terminal module and any power connection terminal module arranged diagonally to both ends.

[0028] Another objective of the present invention is to provide a load switch that is structurally designed with a minimum or optimal path without compromising the circuit function of the device, thereby reducing costs and minimizing assembly time.

[0029] To solve the above problem, the load switch of the present invention comprises: an enclosure; a basic switching unit installed in the enclosure and controlling power supply to a load-side busbar; and a module connection unit installed in the enclosure and electrically connected to the load-side busbar, wherein the module connection unit is connected to the basic switching unit and includes at least one busbar connected to a power-side busbar and a load-side busbar, and the busbar includes a diagonal short-circuit busbar with both ends connected diagonally to the basic switching unit, thereby having a shortest path connection structure of the busbar.

[0030] According to one example related to the present invention, the basic switching unit comprises a connection terminal module connected to a busbar; and a switch module for switching power connections, wherein the connection terminal module comprises a load connection terminal module connected to a load-side busbar; and a power connection terminal module connected to a power-side busbar, which are arranged vertically.

[0031] Preferably, the busbar comprises: an upper connecting busbar connected to the upper side of the connection terminal module; a lower connecting busbar connected to the lower side of the connection terminal module; a horizontal short-circuit busbar connecting a pair of horizontally adjacent connection terminal modules; and a diagonal short-circuit busbar connecting a pair of offset connection terminal modules.

[0032] Additionally, the above-described diagonal short-circuit busbar comprises: a first surface; a second surface, one side of which is vertically connected to one end of the first surface; and a third surface, which is vertically connected to the other side of the other end of the second surface and is horizontally offset from the first surface.

[0033] Accordingly, the above diagonal short-circuit busbar is connected to a pair of connection terminal modules, each having the first surface and the third surface arranged diagonally offset from each other, thereby shortening the connection path length of the busbar.

[0034] The above module connection section has a shortest path connection structure in which the power side busbar and an arbitrary power connection terminal module are connected via the lower connection busbar, a load connection terminal module positioned above the arbitrary power connection terminal module is connected via the diagonal short-circuit busbar to a power connection terminal module positioned in a diagonal direction, and the load connection terminal module positioned above the power connection terminal module is connected via the upper connection busbar and connected to the switch module, so that the busbar is formed in a 'Z' shape.

[0035] Preferably, the module connection portion is such that the four-phase load connection terminal modules arranged horizontally spaced apart are each sequentially connected to the horizontal short-circuit busbar, the diagonal short-circuit busbar, and the upper connection busbar in one direction, and the four-phase power connection terminal modules arranged horizontally spaced apart are each connected to the lower connection busbar, except for the power connection terminal module connected to the diagonal short-circuit busbar, and are connected to the power side busbar.

[0036] The above horizontal short-circuit busbar has a 'U' shape.

[0037] In addition, the above switch module is composed of a fuse that controls the opening and closing of the contacts.

[0038] The load switch of the present invention differs from conventional technology in that it modifies the shape and position of the short-circuit busbar without impairing the use and function of the device, thereby preventing idle circuits caused by unnecessary busbar connections.

[0039] The present invention has the advantage of implementing an efficient busbar connection by implementing a shortest path connection structure for the busbar.

[0040] In addition, the present invention differs from the prior art in that it implements a diagonal short-circuit busbar that connects an arbitrary load connection terminal module and an arbitrary power connection terminal module arranged diagonally to both ends.

[0041] In addition, the present invention differs from conventional technology in that it has a 'Z'-shaped shortest path connection structure extending from a lower connecting busbar, a diagonal short-circuit busbar, and an upper connecting busbar.

[0042] As a result, the present invention is designed as a structurally shortest or optimal path without compromising the circuit function of the device, thereby having the effect of reducing costs and minimizing assembly time.

[0043] Figure 1 is a diagram illustrating the configuration of a connection terminal module of a basic switching unit.

[0044] FIG. 2 is a perspective view illustrating the configuration of the basic switching part and the module connection part of a load switch according to the prior art.

[0045] FIG. 3 is a schematic diagram illustrating the configuration of the basic switching section and the module connection section of a load switch according to the prior art.

[0046] FIG. 4 is a front view illustrating the connection structure of a conventional connection terminal module and a busbar.

[0047] FIG. 5 is a perspective view illustrating the detailed configuration of a load switch according to the present invention.

[0048] FIG. 6 is a front view illustrating the connection structure of the connection terminal module and busbar of a load switch according to the present invention.

[0049] FIG. 7 is a first perspective view illustrating a minimum path connection structure of a busbar according to the present invention.

[0050] FIG. 8 is a second perspective view illustrating a minimum path connection structure of a busbar according to the present invention.

[0051] FIG. 9 is a third perspective view illustrating the minimum path connection structure of a busbar according to the present invention.

[0052] FIG. 10 is a diagram illustrating the configuration of a diagonal short-circuit busbar according to the present invention.

[0053] Hereinafter, a load switch (1) related to the present invention will be described in more detail with reference to the drawings.

[0054] In this specification, identical or similar reference numbers are assigned to identical or similar configurations even for different embodiments, and redundant descriptions thereof are omitted.

[0055] In addition, even if the embodiments are different, as long as there is no structural or functional contradiction, the structure applied to one embodiment can be applied identically to another embodiment.

[0056] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0057] In describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art could obscure the essence of the embodiments disclosed in this specification, such detailed description is omitted.

[0058] The attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings; it should be understood that all modifications, equivalents, and substitutions included within the concept and technical scope of the present invention are included.

[0059] FIG. 5 is a perspective view illustrating the detailed configuration of a load switch according to the present invention.

[0060] Referring to FIG. 5, the configuration of the load switch (1) according to the present invention will be explained.

[0061] In one embodiment, the load switch (1) includes an enclosure (100), a basic switching part (200), and a module connection part (300).

[0062] The outer casing (100) is an outer housing of the load switch (1) according to the present invention.

[0063] The enclosure (100) protects the basic opening / closing part (200) and the module connection part (300). Here, the enclosure (100) can accommodate the basic opening / closing part (100) and the module connection part (200).

[0064] To this end, the outer casing (100) may be made of a metal box with a storage space provided inside. For example, the outer casing (100) may be formed in the shape of a cuboid, such as a square box, to store various devices for operating the basic opening / closing part (200), the module connection part (300), and the opening / closing device (1) inside.

[0065] In particular, the outer casing (100) can be formed into a roughly rectangular prism.

[0066] Although not illustrated, the outer casing (100) is provided with a plurality of supports (not illustrated) arranged to form a rectangular prism and a plurality of covers (not illustrated) coupled to the supports (not illustrated). For example, the covers (not illustrated) may be formed into square plates and placed on each side of the rectangular prism formed by the supports (not illustrated).

[0067] The basic opening / closing unit (200) is installed in the enclosure (100) and is configured to control the power supply to the load-side busbar.

[0068] Here, the basic switching unit (200) can be connected to the power side busbar to receive power. Additionally, the basic switching unit (200) can be connected to the load side busbar to supply power received from the power side busbar to the load side busbar.

[0069] The basic switching unit (200) includes a connection terminal module (210) connected to the power side busbar and the load side busbar, and a switch module (220) that switches the power connection.

[0070] The connection terminal module (210) includes a three-phase or four-phase power connection terminal module (212) connected to a power-side busbar and a three-phase or four-phase load connection terminal module (211) connected to a load-side busbar.

[0071] In one embodiment, the connection terminal module (210) is vertically arranged with a load connection terminal module (211) and a power connection terminal module (212) as shown in FIG. 1. Specifically, the load connection terminal module (211) is positioned above the power connection terminal module (212).

[0072] Accordingly, the connection terminal module (210) has a 4-phase load connection terminal module (211) placed on the upper side and a 4-phase power connection terminal module (212) placed on the lower side.

[0073] Although not shown, the connection terminal module (210) may have a three-phase load connection terminal module (211) positioned on the upper side and a three-phase power connection terminal module (212) positioned on the lower side.

[0074] In addition, the load connection terminal module (211) is connected to the busbar (310) described later and connected to the load-side busbar.

[0075] In addition, the power connection terminal module (211) is connected to the busbar (310) and connected to the power side busbar.

[0076] In one embodiment, a switch module (220) is disposed on the upper side of the load connection terminal module (211).

[0077] In addition, a power side busbar (not shown) is positioned on the lower side of the power connection terminal module (212).

[0078] The switch module (220) is configured to switch the power connection.

[0079] The switch module (220) is a safety device that cuts off the circuit when current exceeding a limit flows.

[0080] The switch module (220) is the last line of defense among the safety devices of the electrical circuit.

[0081] The switch module (220) controls the additional power supply to the load-side busbar.

[0082] Although not illustrated, the switch module (220) may include a link assembly (not illustrated) for opening and closing electrical connections and an earth bus (not illustrated) for grounding to control additional power supply. Additionally, the switch module (220) may further include an instrument box for operation and information verification.

[0083] In one embodiment, the switch module (220) may be a fuse that controls the opening and closing of the contacts.

[0084] A fuse is a device that interrupts a circuit by causing the wires inside a glass tube to snap on their own when a current exceeding a limit flows. Additionally, if a disposable fuse blows, it means that the circuit has already suffered serious damage.

[0085] Looking at Fig. 5, the switch module (220) composed of fuses is composed of multiple units.

[0086] The module connection part (300) is installed in the enclosure and is configured to be electrically connected to the load-side busbar.

[0087] The module connection part (300) is connected to the basic opening / closing part (200).

[0088] The module connection part (300) is composed of at least one busbar (310) connected to the power side busbar and the load side busbar.

[0089] The busbar (310) connects the connection terminal module (210) and the load-side busbar. Here, the busbar (310) can be connected to each of the connection terminal modules (210). For example, multiple busbars (310) can be arranged horizontally parallel to the ground or vertically to the ground.

[0090] The busbar (310) is formed of an electrical conductor.

[0091] The busbar (310) is each implemented in the shape of a square plate.

[0092] The busbar (310) can be formed by bending it into an L-shape.

[0093] The busbar (310) may be formed by bending it into a 'C' shape.

[0094] Multiple busbars (310) are fastened to the device by multiple fastening members (not shown), such as bolts or screws.

[0095] One side of the busbar (310) is inserted and positioned in the spaced-apart space of a busbar (not shown) or connection terminal module (210) that is spaced apart in a row.

[0096] The busbar (310) is connected to the power side busbar and can be defined as a busbar that supplies main power and a branch busbar that supplies power supplied by the busbar to the load side.

[0097] The busbar (310) has a structure that is connected to the connection terminal module (210) of the basic opening / closing unit (200).

[0098] Referring to FIGS. 2, 3, and 4, the conventional busbar (310) has a connection structure in which four busbars (310) connected from a four-phase load connection terminal module (211) are connected upwards for connection with a switch module (220) (see FIG. 5) positioned on the upper side of a connection terminal module (210).

[0099] In this case, in order to maintain uniformity with the busbar (310) connected to the switch module (220) (see FIG. 5), a busbar (310) route path that is unnecessarily connected upward is installed. This creates multiple unnecessary idle circuits to ensure uniformity in the busbar (310) connection, resulting in economic waste due to increased costs and excessive use of assembly labor (see FIG. 2).

[0100] Accordingly, the busbar (310) according to the present invention compensates for the disadvantages of the conventional busbar connection structure that only holds a short circuit at one pole, and is configured such that the shape and position of the busbar (310) are modified to the extent that the use and function of the device are not impaired, thereby preventing the occurrence of idle circuits due to unnecessary busbar (310) connections.

[0101] FIG. 6 is a front view illustrating the connection structure of a connection terminal module and a busbar of a load switch according to the present invention, FIG. 7 is a first perspective view illustrating the minimum path connection structure of a busbar according to the present invention, FIG. 8 is a second perspective view illustrating the minimum path connection structure of a busbar according to the present invention, FIG. 9 is a third perspective view illustrating the minimum path connection structure of a busbar according to the present invention, and FIG. 10 is a diagram illustrating the configuration of a diagonal short-circuit busbar according to the present invention.

[0102] The busbar (310) according to the present invention is formed with a minimum path connection structure.

[0103] With reference to FIGS. 6 to 9, the busbar connection structure of the present invention will be described.

[0104] In one embodiment, the busbar (310) is composed of an upper connecting busbar (311), a lower connecting busbar (312), a horizontal short-circuit busbar (313), and a diagonal short-circuit busbar (314).

[0105] The upper connecting busbar (311) is a busbar (310) connected to the upper side of the connection terminal module (210).

[0106] The upper connecting busbar (311) is connected to the load connection terminal module (211).

[0107] The upper connecting busbar (311) is formed in a straight plate shape or a longitudinal plate shape having a curved shape.

[0108] Specifically, the upper connecting busbar (311) is configured to electrically connect the load connection terminal module (211) and the upper device.

[0109] More specifically, the upper connecting busbar (311) electrically connects the load connection terminal module (211) and the switch module (220).

[0110] The lower connecting busbar (312) is a busbar (310) connected to the lower side of the connection terminal module (210).

[0111] The lower connecting busbar (312) is connected to the power connection terminal module (212).

[0112] The lower connecting busbar (312) has a straight plate shape or a longitudinal plate shape with a curved shape.

[0113] Specifically, the lower connecting busbar (312) implements a connection between the power connection terminal module (212) and the lower power side busbar.

[0114] The horizontal short-circuit busbar (313) is a busbar (310) that connects a pair of connection terminal modules (210) arranged horizontally next to each other.

[0115] The horizontal short-circuit busbar (313) is formed by bending it into a 'C' shape.

[0116] The horizontal short-circuit busbar (313) implements a short circuit of the horizontally adjacent connection terminal module (210).

[0117] The diagonal short-circuit busbar (314) is a busbar (310) that connects a pair of connection terminal modules (210) arranged in an offset manner.

[0118] The diagonal short-circuit busbar (314) is a busbar (310) that connects an arbitrary load connection terminal module (211) and an arbitrary power connection terminal module (212) arranged diagonally to both ends.

[0119] That is, the diagonal short-circuit busbar (314) is horizontally arranged so that both sides are offset to enable connection in the diagonal direction.

[0120] Referring to FIG. 10, the diagonal short-circuit busbar (314) is formed with a first surface (314a), a second surface (314b) with one side of one end vertically connected to one end of the first surface (314a), and a third surface (314c) with the other side of the other end of the second surface (314b) vertically connected to the second surface (314b).

[0121] Also, the first surface (314a) and the third surface (314c) are horizontally offset from each other.

[0122] Accordingly, the diagonal short-circuit busbar (314) implements a minimum path connection structure of the busbar (310) that reduces unnecessary path generation by connecting diagonal connection terminal modules (210) arranged in an offset manner to both ends.

[0123] Referring to FIG. 6, the first surface (314a) is connected to any first terminal, and the third surface (314c) is connected to any second terminal positioned diagonally opposite to the first terminal, thereby shortening the length of the connection path of the busbar (310).

[0124] More specifically, the first surface (314a) is connected to any load connection terminal module (211), and the third surface (314c) is connected to a power connection terminal module (210) that is arranged diagonally opposite to the aforementioned any load connection terminal module (212).

[0125] That is, the diagonal short-circuit busbar (314) forms a diagonally offset connection line (path) to enable the implementation of the minimum path or optimal path of the busbar (310).

[0126] The diagonal short-circuit busbar (314) has a horizontal shape in which the first surface (314a) and the third surface (314c) are offset from each other.

[0127] The diagonal section busbar (314) can form a suitable model by combining multiple busbars in the longitudinal direction and busbars in the shape of an 'L'.

[0128] That is, the diagonal short-circuit busbar (314) combines multiple busbars (310) to form a first surface (314a), a second surface (314b), and a third surface (314c).

[0129] The module connection part (300) according to the present invention has a shortest path connection structure.

[0130] Referring to FIG. 6, the shortest path connection structure of the busbar is such that the power side busbar and any power connection terminal module (210) are connected by a lower connection busbar (312), and a load connection terminal module (211) positioned above any power connection terminal module (210) is connected to a power connection terminal module (212) positioned diagonally and the diagonal short-circuit busbar (314), and the load connection terminal module (211) positioned above the power connection terminal module (212) is connected to an upper connection busbar (311) and connected to a switch module (220).

[0131] Accordingly, the busbar has a minimum path connection structure formed in a 'Z' shape.

[0132] As one embodiment, the connection terminal module (210) includes four (4-phase) load connection terminal modules (211) positioned on the upper side as shown in the illustration and four (4-phase) power connection terminal modules (212) positioned on the lower side.

[0133] In the load connection terminal module (211), a horizontal short-circuit busbar (313) and a diagonal short-circuit busbar (314) are sequentially arranged in one direction. (See FIGS. 5 to 9)

[0134] In addition, the remaining three power connection terminal modules (212), excluding the power connection terminal module (212) connected to the aforementioned diagonal short-circuit busbar (314), are each connected to the lower connection busbar (312) and connected to the power side busbar. (See FIGS. 5 to 9)

[0135] Accordingly, in the busbar (310) connection connector structure according to the present invention, the four-phase load connection terminal modules (211) arranged horizontally spaced apart are each sequentially connected to the horizontal short-circuit busbar (313), the diagonal short-circuit busbar (314), and the upper connection busbar (311) in one direction. In addition, the four-phase power connection terminal modules (212) arranged horizontally spaced apart are each connected to the lower connection busbar (312), except for the power connection terminal module (212) connected to the diagonal short-circuit busbar (314), and are connected to the power side busbar.

[0136] The busbar (310) connection connector structure according to the present invention is configured such that the shape and position of the short-circuit busbar are modified to the extent that the use and function of the device are not impaired, thereby preventing idle circuits caused by unnecessary busbar (310) connections. Accordingly, the load switch (1) according to the present invention implements an efficient busbar connection structure.

[0137] The load switch of the present invention differs from conventional technology in that it modifies the shape and position of the short-circuit busbar without impairing the use and function of the device, thereby preventing idle circuits caused by unnecessary busbar connections.

[0138] The present invention has the advantage of implementing an efficient busbar connection by implementing a shortest path connection structure for the busbar.

[0139] In addition, the present invention differs from the prior art in that it implements a diagonal short-circuit busbar that connects an arbitrary load connection terminal module and an arbitrary power connection terminal module arranged diagonally to both ends.

[0140] In addition, the present invention differs from conventional technology in that it has a 'Z'-shaped shortest path connection structure extending from a lower connecting busbar, a diagonal short-circuit busbar, and an upper connecting busbar.

[0141] As a result, the present invention is designed as a structurally shortest or optimal path without compromising the circuit function of the device, thereby having the effect of reducing costs and minimizing assembly time.

[0142] The load switch (1) described above is not limited to the configuration and method of the embodiments described above, and all or part of each embodiment may be selectively combined to allow for various modifications to be made.

[0143] It is obvious to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit and essential features of the invention. Accordingly, the foregoing detailed description should not be interpreted restrictively in all respects but should be considered exemplary. The scope of the invention shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention.

Claims

1. Enclosure; A basic switching unit installed in the above enclosure to control power supply to the load-side busbar; and It includes a module connection part installed in the above enclosure and electrically connected to the load-side busbar, and The above module connection part is, It includes at least one busbar connected to the above basic switching unit and connected to the power side busbar and the load side busbar, and The above busbar is, A load switch having a shortest path connection structure of the busbar, comprising a diagonal short-circuit busbar having both ends connected diagonally to the above basic switching part.

2. In Paragraph 1, The above basic opening and closing unit is, A connection terminal module connected to a busbar; and It includes a switch module that switches the power connection, and The above connection terminal module is, A load connection terminal module connected to a load-side busbar; and A load switch in which power connection terminal modules connected to the power side busbar are arranged vertically.

3. In Paragraph 2, The above busbar is, An upper connecting busbar connected to the upper side of the above connection terminal module; A lower connecting busbar connected to the lower side of the above-mentioned connection terminal module; A horizontal short-circuit busbar connecting a pair of connection terminal modules arranged horizontally adjacent to each other; and A load switch consisting of a diagonal short-circuit busbar connecting a pair of offset connection terminal modules.

4. In Paragraph 3, The above diagonal short-circuit busbar is, Page 1; A second surface having one side of a set vertically connected to one end of the first surface; and A load switch comprising a third surface that is vertically connected to the second surface and horizontally offset from the first surface, on the other side of the other end of the second surface.

5. In Paragraph 4, The above diagonal short-circuit busbar is, A load switch that shortens the connection path length of the busbar by connecting to a pair of connection terminal modules, each having the first surface and the third surface arranged diagonally offset from each other.

6. In Paragraph 3, The above module connection part is, A load switch having a shortest path connection structure in which the busbar is formed in a 'Z' shape, wherein the power side busbar and any power connection terminal module are connected by the lower connection busbar, the load connection terminal module positioned above the any power connection terminal module is connected by the diagonal short-circuit busbar to the power connection terminal module positioned in a diagonal direction, and the load connection terminal module positioned above the power connection terminal module is connected by the upper connection busbar and connected to the switch module.

7. In Paragraph 3, The above module connection part is, The four-phase load connection terminal modules arranged horizontally spaced apart have the horizontal short-circuit busbar, the diagonal short-circuit busbar, and the upper connection busbar sequentially connected in one direction, respectively. The four-phase power connection terminal modules arranged horizontally spaced apart are load switches, each connected to the lower connection busbar and connected to the power side busbar, except for the power connection terminal module connected to the diagonal short-circuit busbar.

8. In Paragraph 3, The above horizontal short-circuit busbar is, A load switch having a 'ㄷ' shape.

9. In Paragraph 2, The above switch module is, A load switch consisting of a fuse that controls the opening and closing of contacts.

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