Distribution board having compartment-linked interlock device

Abstract

The present invention relates to a distribution board having a compartment-linked interlock device and, more specifically, to a distribution board having a compartment-linked interlock device of a control transformer panel having a plurality of compartments. According to the distribution board having an interlock device, of the present invention, when a wiring circuit breaker for connecting a low-pressure part of a second compartment and a load is inserted, an insertion / withdrawal handle input hole of a first compartment is closed so that the movement of a fuse truck is prevented.

Description

Distribution board with interlocking device for compartmentalization

[0001] The present invention relates to a switchboard having a compartment-linked interlock device, and more particularly, to a switchboard having a compartment-linked interlock device for a control transformer panel having a plurality of compartments.

[0002] In general, a distribution panel is a device used to monitor, control, and protect a power system. A distribution panel houses and uses various power devices such as circuit breakers, current transformers, and instrument transformers to supply or control power and operate motors.

[0003] Among these power devices, the circuit breaker is the most crucial. Installed in certain parts of the power system, the circuit breaker switches the load or interrupts the circuit in the event of a fault such as a ground fault or short circuit.

[0004] In the operation of a circuit breaker, there is an operating position (Service position, Connected position) where the power terminal and load terminal of the circuit breaker body are connected to the power terminal and load terminal of the cradle (or the casing of the distribution panel) so that voltage and current are supplied, a test position (Test position) where the terminal of the circuit breaker body is separated from the terminal of the cradle so that only the operating status of the circuit breaker can be checked, and a disconnected position (Disonnected position) where the terminal of the circuit breaker body is completely separated from the terminal of the cradle.

[0005] When the circuit breaker is in the operating position, it operates when an accident current such as a short circuit or ground fault occurs to prevent secondary accidents. However, when the circuit breaker is in the test position, it does not operate, so a separate grounding switch is installed at the rear of the distribution board to ensure human and material safety and prevent accidents.

[0006] When moving the circuit breaker to each position in this manner, a safety device is provided to ensure that the circuit breaker can be inserted or removed while the switchboard door is closed for operator safety. Specifically, the switchboard is equipped with a door interlock device that prevents the door from being opened when the circuit breaker is in the operating position, and allows the door to be opened only when the circuit breaker is in the test or disconnected position.

[0007] Figure 1 shows an example of a distribution panel according to the prior art.

[0008] The distribution board shall be provided with multiple compartments to accommodate power devices according to their intended use, and each compartment shall have shielding and insulation performance as prescribed by law.

[0009] The plurality of compartments may include a circuit breaker room (1) where circuit breakers are stored, a cable room (2) where inlet / outlet booths or cables enter, a bus room (3) where bus lines pass, a transformer room (4) where instrument transformers are stored, and a low-voltage equipment room (5) where low-voltage equipment is stored.

[0010] At this time, it is common for the frames or fixed power components of each compartment to be connected to each other by bolts.

[0011] Power devices housed in the distribution board include a circuit breaker (6), an instrument transformer (7), an instrument current transformer (8), a busbar in a bus room (9), a busbar in a cable room (10), an instrument transformer busbar (11), a distribution board terminal (12) that is connected to the busbar and can be connected to a circuit breaker, a circuit breaker tulip-shaped terminal (13), and a drawer handle (14) for moving the circuit breaker body.

[0012] When the circuit breaker (6) is stored in the test position in the circuit breaker room (1) as shown in Fig. 1, voltage and current do not flow between the power source and the load.

[0013] If the circuit breaker (1) is brought into the operating position, current and voltage are supplied to the circuit, and the circuit breaker enables connection or interruption of current.

[0014] Here, the circuit breaker (1) is moved to the test position or the operating position by the pull-out handle (14).

[0015] When the instrument transformer (7) is stored in the test position of the transformer room (4) as shown in Fig. 1, it does not measure voltage, and when it is brought into the operating position, it can be connected to the distribution panel terminal (15) connected to the instrument transformer bus bar (11) to provide control power to the power devices.

[0016] At this time, the method of moving the instrument transformer (7) to the test position or operating position is the same as that of moving the circuit breaker.

[0017] However, in the case of high-voltage switchboards, as transformer capacities increased, the fuse and instrument transformers, previously manufactured as a single unit, began to be separated. This meant that operating the transformer room as a single compartment became difficult, leading to the development of switchboards with separate compartments: one for the fuses and another for the instrument transformers. In this case, a separate instrument transformer panel was installed, containing the fuse and instrument transformer compartments.

[0018] A transformer panel of this type is illustrated in FIGS. 2 and 3. FIGS. 2 and 3 are side views of an instrument transformer panel of a distribution board according to the prior art. FIG. 2 shows a state in which the fuse carriage of the first compartment is in the Off position, and FIG. 3 shows a state in which the fuse carriage of the first compartment is in the On position.

[0019] The transformer panel (50) is provided with a fuse compartment (51) and a control power transformer compartment (CPT compartment) (61) on the front side, and a bus bar (75) and a cable room (76) configured with a high voltage applied bus bar (75) on the rear side.

[0020] Here, the primary circuit is connected to the fuse room (51), and the primary circuit and the secondary circuit are connected to the instrument transformer room (61). In other words, in the fuse room (51), the high-voltage bus bar (75) and the primary bus bar (54) are connected or disconnected by the fuse carrier (55), and in the instrument transformer room (61), the current from the primary bus bar (54) is converted into secondary current by the instrument transformer (65), and the secondary current is connected to or disconnected as a load by the wiring circuit breaker (80).

[0021] A fuse truck (55) is installed in the fuse room (51) and can move forward and backward.

[0022] A fuse (56) is installed in the fuse carriage (55) between the high voltage bus bar (75) and the primary bus bar (54). The fuse (56) connects the high voltage bus bar (75) and the primary bus bar (54). When the fuse carriage (55) moves rearward, the fuse (56) is inserted, connecting the high voltage bus bar (75) and the primary bus bar (54) to conduct electricity to the circuit, and when the fuse carriage (55) moves forward, the fuse (56) is pulled out, disconnecting the connection between the high voltage bus bar (75) and the primary bus bar (54) to cut off the circuit.

[0023] A high voltage bus bar (75) is connected to the fuse room terminal (53). The high voltage bus bar (75) is positioned at the rear of the panel. The high voltage bus bar (75) is installed penetrating the bus room (71) or cable room (76). The high voltage bus bar (75) is positioned penetrating a plurality of adjacently arranged panels.

[0024] The fuse carrier (55) is provided with a first terminal (57) and a second terminal (58) that are respectively connected to both ends of the fuse (56). When the fuse carrier (55) is inserted, the first terminal (57) is connected to the high-voltage bus bar (75), and the second terminal (58) is connected to the primary bus bar (54).

[0025] An instrument transformer (65) is installed in the instrument transformer room (61) to convert the primary current into secondary current. The instrument transformer (65) converts the current flowing in the primary circuit from high voltage to low voltage and supplies power to devices (relays, measuring instruments, etc.) that use low voltage power.

[0026] A primary bus bar (62) is extended into the instrument transformer room (61). The primary bus bar (62) is connected to the primary coil of the instrument transformer (65).

[0027] A wiring circuit breaker (80) is connected to the secondary coil of an instrument transformer (65). A first terminal (power side terminal) (82) of the wiring circuit breaker (80) is connected to the secondary coil of the instrument transformer (65), and a second terminal (load side terminal) (83) of the wiring circuit breaker (80) is connected to a load. The wiring circuit breaker (80) supplies or blocks current flowing in the secondary circuit to an internal device requiring control power.

[0028] Meanwhile, a remote operation handle (90) is provided to remotely operate the wiring circuit breaker (80) from outside the instrument transformer room (61).

[0029] Figures 4 to 7 illustrate a conventional instrument transformer room (61) and a wiring circuit breaker (80). Figures 4 and 5 are perspective views of the second compartment in Figure 2. Figure 4 shows the door closed, and Figure 5 shows the door open.

[0030] Figures 6 and 7 show the operating states of the circuit breaker for wiring in Figure 5. Figure 6 is in the open state (Off), and Figure 7 is in the closed state (On).

[0031] A remote control handle (90) is provided on the outside of the door (64) of the instrument transformer room (61).

[0032] By pulling the remote lever (91) of the remote control handle (90), the switch lever (81) is operated through the control lever (86) installed on the circuit breaker (80) via a wire (93). In this way, the circuit breaker (80) can be turned on and off by the remote control handle (90).

[0033] An instrument transformer (65) and a wiring circuit breaker (80) are installed in the instrument transformer room (61), which is the lower compartment of the transformer panel (50). Care must be taken to prevent safety accidents from occurring when turning the wiring circuit breaker (80) on and off.

[0034] If maintenance is required, such as when a transformer is damaged or a fuse is blown due to an accident occurring during operation, the user can protect himself from danger by performing maintenance work with the fuse carrier (55) pulled out. At this time, the fuse carrier (55) must be pulled out while the secondary circuit is disconnected. Furthermore, if the instrument transformer room door (64) is opened arbitrarily while working, there is a risk of accidents due to exposure to high voltage and other hazards.

[0035] The basic operating sequence of the transformer panel (50) is as follows.

[0036] First, the operating sequence upon input is as follows.

[0037] Close the fuse room (51) door and the instrument transformer room (61) door.

[0038] Connect the primary circuit by bringing the fuse carrier (55) into the operating position.

[0039] Turn the switch of the wiring circuit breaker (80) to the on position to connect the secondary circuit.

[0040] Next, the driving sequence when opening is as follows.

[0041] Turn the switch of the wiring circuit breaker (80) to the off position to open the secondary circuit.

[0042] The fuse cartridge (55) is pulled out to the disconnected position to open the primary circuit.

[0043] Open the fuse room (51) door and the instrument transformer room (61) door.

[0044] Failure to follow this order may result in a safety hazard.

[0045] Therefore, in order to prevent a safety accident, it is not permitted to connect the primary circuit or secondary circuit while the door of the transformer panel (50) is open.

[0046] With the door closed, it is possible to connect the secondary circuit without connecting the primary circuit. This is considered test mode.

[0047] Meanwhile, it is not permitted to connect the primary circuit, which is the high-voltage circuit, while the secondary circuit is connected, i.e., the low-voltage circuit and the load are connected.

[0048] Additionally, opening the door while the primary circuit or secondary circuit is connected, or disconnecting the primary circuit while the secondary circuit is connected, is not permitted.

[0049] These matters are also stipulated in laws.

[0050] Interlock devices are necessary to comply with these regulations and protect drivers.

[0051] As previously mentioned, connecting or disconnecting the primary circuit while the secondary circuit is connected must be avoided due to the risk of arc current-induced accidents. In other words, connecting or disconnecting the primary circuit is only possible while the secondary circuit is open.

[0052] However, in a case where the transformer panel (50) is provided separately as above and the fuse room (51) and the instrument transformer room (61) are separated, an interlock structure that prevents the primary circuit from being connected or disconnected while the secondary circuit is connected is not provided.

[0053] As described above, the wiring circuit breaker (80) can be turned on and off by the remote control handle (90). Therefore, an interlock must be provided to prevent the fuse cart from being inserted / withdrawn while the wiring circuit breaker is in the On state.

[0054] In other words, an interlock device is required between the first and second compartments to limit the operation of the primary circuit depending on the state of the secondary circuit.

[0055] The present invention has been devised to solve the above-mentioned problem, and its purpose is to provide a distribution panel including a transformer panel having a first compartment in which a fuse carriage is installed and a second compartment in which an instrument transformer is installed, and having a compartment-linked interlock device that prevents movement of a fuse carriage in a first compartment when a wiring circuit breaker in the second compartment is turned on and a secondary circuit is connected.

[0056] A distribution board having a compartment-linked interlock device according to one embodiment of the present invention comprises: a first compartment in which a first power device is installed; a second compartment in which a second power device is installed adjacent to the first compartment and connected to the first power device; a circuit breaker installed in the second compartment and electrically connected to the second power device to open and close a secondary circuit; a first sliding plate slidably installed on one side of the circuit breaker and coupled to a switch lever of the circuit breaker; and a second sliding plate formed in the first compartment and slidably installed on a front side of a drawer / withdrawal handle insertion port for moving the first power device, the second sliding plate moving in conjunction with the first sliding plate, wherein the drawer / withdrawal handle insertion port is opened or closed according to movement of the second sliding plate.

[0057] Here, a rotary lever is further included, which is installed between the first sliding plate and the second sliding plate and converts the vertical movement of the first sliding plate into the horizontal movement of the second sliding plate.

[0058] In addition, the rotary lever is formed with a first lever arm portion and a second lever arm portion extended at a predetermined interval based on the axis of the rotary lever.

[0059] Additionally, a lever connecting portion that is axially coupled to the rotary lever is protrudingly formed on one side of the second sliding plate.

[0060] Additionally, an insertion hole into which the lever connecting part is inserted is formed on the bottom surface of the first compartment.

[0061] Additionally, a first fixed bracket is installed on the side of the second compartment to support the movement of the first sliding plate.

[0062] Additionally, a first sliding hole is formed in the first fixed bracket to guide the vertical movement of the first sliding plate.

[0063] Additionally, a fitting hole is formed in the first sliding plate into which a plate pressurizing member coupled to the switch lever of the circuit breaker is fitted.

[0064] Additionally, the upper portion of the first sliding plate is provided with a lever pressure plate that contacts the rotating lever.

[0065] Additionally, a second fixed bracket is installed on the front of the insertion / withdrawal handle of the first compartment to support the movement of the second sliding plate.

[0066] In addition, a plurality of second sliding holes are formed in the second sliding plate, into which a second sliding fastening member fastened to the second fixed bracket is inserted, and through which sliding movement is possible.

[0067] Additionally, a lever bracket to which the rotary lever is coupled is installed in the second compartment.

[0068] Additionally, the lever bracket is provided with a stopper that limits the rotation of the rotary lever.

[0069] Additionally, the first lever arm portion is formed to extend downward toward the first sliding plate and to be bent in an arc shape.

[0070] Additionally, the second lever arm portion extends upward toward the second sliding plate.

[0071] Additionally, a connecting hole is formed in the second lever arm portion to be axially connected to the lever connecting portion.

[0072] Additionally, a lever return spring is provided between the lever bracket and the second lever arm.

[0073] According to a distribution board having an interlock device according to the present invention, when a circuit breaker for wiring connecting a low-voltage section of a second compartment and a load is turned on, the insertion / withdrawal handle insertion port for moving a fuse carriage in a first compartment is closed, thereby preventing movement of the fuse carriage.

[0074] Accordingly, while the secondary circuit is connected, connection or disconnection of the primary circuit is prevented, thereby protecting the user.

[0075] Figure 1 is a side view of a multi-stage distribution panel according to the prior art.

[0076] Figures 2 and 3 are side views of an instrument transformer panel of a distribution board according to the prior art. Figure 2 shows a state in which the fuse carriage of the first compartment is in the Off position, and Figure 3 shows a state in which the fuse carriage of the first compartment is in the On position.

[0077] Figures 4 and 5 are perspective views of the second compartment in Figure 2. Figure 3 shows the door closed, and Figure 4 shows the door open.

[0078] Figures 6 and 7 show the operating states of the circuit breaker for wiring in Figure 5. Figure 6 is in the open state (Off), and Figure 7 is in the closed state (On).

[0079] Figures 8 to 18 are drawings of a distribution panel according to one embodiment of the present invention.

[0080] Figure 8 is a perspective view of a transformer panel for a distribution panel according to one embodiment of the present invention.

[0081] Figures 9 and 10 are side views of Figure 8. Only the fuse carriage compartment and the instrument transformer compartment are shown. Figure 9 shows the fuse carriage in the extended state (primary circuit open state), and Figure 10 shows the fuse carriage in the inserted state (primary circuit closed state).

[0082] Figures 11 and 12 are partial detailed views of the front of the instrument transformer panel, viewed from different sides. The door is open.

[0083] Figure 13 is a perspective view of a circuit breaker section for wiring.

[0084] Fig. 14 is an exploded perspective view of the wiring circuit breaker portion of Fig. 13.

[0085] Figures 15 and 16 are operational diagrams of a wiring circuit breaker. Figure 15 shows the wiring circuit breaker in the off state, and Figure 16 shows the wiring circuit breaker in the on state.

[0086] Figure 17 is a perspective view of the second sliding plate assembly.

[0087] Figures 18 and 19 are operational diagrams of a compartment-linked interlock device according to one embodiment of the present invention. Figure 18 shows the off state of the wiring circuit breaker, i.e., the secondary circuit open state, and Figure 19 shows the on state of the wiring circuit breaker, i.e., the secondary circuit closed state.

[0088] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, these drawings are intended to provide a detailed description sufficient to enable those skilled in the art to easily practice the invention, and are not intended to limit the technical spirit or scope of the present invention.

[0089] The terms “absence” or “part” used to refer to components in the present invention are not used for any limiting purpose and may be omitted.

[0090] Fig. 8 is a perspective view of a distribution panel instrument transformer panel according to one embodiment of the present invention. Figs. 9 and 10 are side views of Fig. 8. Only the fuse carriage compartment and the instrument transformer compartment are shown. Fig. 9 shows the fuse carriage pulled out state (primary circuit open state), and Fig. 10 shows the fuse carriage inserted state (primary circuit closed state). Figs. 11 and 12 are partial detailed views of the front part of the distribution panel instrument transformer panel as viewed from different sides. The door is open. Referring to the drawings, a distribution panel having an interlock device according to each embodiment of the present invention will be described in detail.

[0091] A distribution board (100) according to one embodiment of the present invention comprises: a first compartment (110) in which a first power device (fuse fuse) (500) for opening and closing a primary circuit is installed; a second compartment (210) in which a second power device (instrument transformer) (600) is installed adjacent to the first compartment (110) and connected to the first power device (500) to lower a voltage; a circuit breaker (wiring circuit breaker) (650) installed in the second compartment (210) and electrically connected to the second power device (600) to open and close a secondary circuit; a first sliding plate (720) that is installed on one side of the circuit breaker (650) so as to be able to slide and is coupled to a switch lever (660) of the circuit breaker (650); And it is characterized in that it includes a second sliding plate (820) that is formed in the first compartment (110) and is installed in a sliding manner in front of the pull-out handle insertion port (162) for moving the first power device (500), and moves in conjunction with the first sliding plate (720), and the pull-out handle insertion port (162) is opened or closed according to the movement of the second sliding plate (820).

[0092] Here, a rotation lever (840) installed between the first sliding plate (720) and the second sliding plate (820) to change the direction of movement of the first sliding plate (720) to the direction of movement of the second sliding plate (820) may be further included.

[0093] A distribution panel according to one embodiment of the present invention may include a circuit breaker panel, a feed panel, a transformer panel, etc. In the present invention, a description will be mainly given of a transformer panel (100) forming part of the distribution panel.

[0094] The transformer panel (100) may be formed as a rectangular box structure. The transformer panel (100) is divided into several compartments. For example, the transformer panel may be divided into a first compartment (110) and a second compartment (210) located at the front, and a bus room (310) and a cable room (360) located at the rear.

[0095] The first compartment (110) and the second compartment (210) can be stacked in two stages. At this time, the compartment located on the upper side is referred to as the first compartment (110), and the compartment located on the lower side is referred to as the second compartment (210). Here, the case where the first compartment (110) is used as the first power device (fuse bogie) compartment and the second compartment (210) is used as the second power device (instrument transformer) compartment will be described.

[0096] A first power device (fuse fuse) (500) is installed in the first compartment (110), and a second power device (instrument transformer) (600) is installed in the second compartment (210). Based on voltage, high voltage is applied to the first compartment (110), and low voltage is generated in the second compartment (210).

[0097] Here, the first power device is a device that switches the high-voltage circuit (primary circuit), and since a fuse carrier is mainly used, the term "fuse carrier" will be primarily used in the following description. Furthermore, the second power device is a device that is connected to the high-voltage circuit and generates low-voltage, and since an instrument transformer is mainly used, the term "instrument transformer" will be primarily used in the following description.

[0098] The first compartment (110) is manufactured to accommodate a fuse cradle (500). The fuse cradle (500) moves within the first compartment (110) to a disconnected position (see FIG. 9), a test position, and a connected position (see FIG. 10). Here, the test position is a state in which the primary power supply is not connected and only the secondary power supply is connected (the wiring circuit breaker in the second compartment is turned on).

[0099] A first compartment door (150) is provided on the front of the first compartment (110). The first compartment door (150) is hingedly connected to one corner of the first compartment (110) and can be rotated in the form of a swing door to open and close the first compartment (110).

[0100] An insertion hole (115) into which a lever connection portion (824) of a second sliding plate (820) can be inserted is formed in the bottom panel (112) of the first compartment (110).

[0101] The fuse carrier (500) has a first terminal (510) connected to the first compartment first terminal (120) and a second terminal (520) connected to the first compartment second terminal (125).

[0102] Inside the first compartment (110), a first compartment terminal (120, 125), a first compartment rail section (130), a shutter assembly (140), a transport device section (160), etc. are provided.

[0103] The first compartment terminal (120, 125) is composed of a first compartment first terminal (120) connected to a mother room (310) having a high voltage section and a first compartment second terminal (125) connected to a second compartment (210) that generates a low voltage.

[0104] The first compartment first terminal (120) is installed at the rear of the first compartment (110) and connects the first terminal (510) of the fuse carriage (500) and the high voltage section of the bus box (310). Here, the high voltage section includes a high voltage bus bar (320).

[0105] The first compartment second terminal (125) is installed on the lower surface of the first compartment (110) and connects the second terminal (520) of the fuse carrier (500) and the second compartment terminal (225) of the second compartment (210). At this time, the first compartment second terminal (125) includes an upwardly extending extension bus bar (126), and the second terminal (520) is connected to the extension bus bar (126). In addition, the second compartment terminal (225) includes a second compartment bus bar (227), and the second compartment bus bar (227) is connected to an instrument transformer (600).

[0106] The first compartment's first terminal (120) is connected to the high-voltage bus bar (320) of the mother room (310). Accordingly, the first compartment (110) is equipped with a fuse carrier (500) to transmit or block high-voltage current.

[0107] Specifically, when the fuse carriage (500) is moved to the rear of the first compartment (110), i.e., the operating position (connected position, service position), the first terminal (510) of the fuse carriage (500) is connected to the first terminal (120) of the first compartment and receives current from the power source through the high-voltage bus bar (320).

[0108] In addition, when the fuse carriage (500) is moved to the front of the first compartment (110), i.e., the test position or the disconnected position, the first terminal (510) of the fuse carriage (500) is separated from the first terminal (120) of the first compartment, so that the current supply through the high voltage bus bar (320) is cut off.

[0109] A fuse (530) is provided between the first terminal (510) and the second terminal (520) of the fuse carrier (500). The fuse (530) connects the first terminal (510) and the second terminal (520) to allow current to flow, and when an overcurrent flows in the circuit, it blows and cuts off the circuit. The fuse (530) is a disposable consumable component, and once it blows, the fuse (530) must be replaced. This is a difference from the trip mechanism of a general circuit breaker.

[0110] A fuse cart transporter (540) is provided at the bottom of the fuse cart (500). The transporter is commonly referred to as a truck. The fuse cart transporter (540) is provided with transport wheels (545) on both sides of the cart frame (542) so as to move along the first compartment rail section (130). The fuse cart transporter (540) is connected to the transport device section (160) of the first compartment (110) and moves forward and backward to move the fuse cart (500).

[0111] A transfer device (160) is provided on the bottom surface of the first compartment (110). The transfer device (160) provides power to move the fuse cart (500). The transfer device (160) converts the rotational force of the screw handle into linear motion to move the fuse cart (500) in the forward and backward directions.

[0112] In the transport device (160), a lead screw (163) is arranged in the forward and backward direction. The lead screw (163) is formed in the shape of a circular rod and has threads formed along the outer surface, so that when it rotates, a member connected to the threads moves forward or backward. The fuse carriage transport unit (540) is connected to the member that moves forward and backward and moves, and thus the fuse carriage (500) also moves forward and backward.

[0113] A pull-out handle (not shown) is provided to rotate the lead screw (163), and the pull-out handle is coupled to the lead screw (163) through a pull-out handle insertion port (162) through which the front end of the lead screw (163) is exposed.

[0114] In order to access the insertion / withdrawal handle insertion port (162) of the transport device (160), a first compartment door (150) is provided with a first compartment handle insertion port (152). That is, a user can insert the insertion / withdrawal handle into the first compartment handle insertion port (152) and the insertion / withdrawal handle insertion port (162) with the first compartment door (150) closed, fit it into the lead screw (163), and perform an insertion / withdrawal movement operation for the fuse carriage (500).

[0115] A first compartment rail section (130) is provided on both sides of the first compartment (110). The first compartment rail section (130) can guide the transport wheel (545) of the fuse cart transport section (540) during the process of the fuse cart (500) being moved by the transport device section (160) and the fuse cart transport section (540). The transport wheel (545) moves along the first compartment rail section (130).

[0116] A shutter assembly (140) is provided inside the first compartment (110) to cover the first compartment first terminal (120). The shutter assembly (140) prevents safety accidents by covering the first compartment first terminal (120) when the fuse carriage (500) is in the disconnected position, and opens the first compartment first terminal (120) when the fuse carriage (500) is in the connected position so that the first terminal (510) can be connected to the first compartment first terminal (120).

[0117] The shutter assembly (140) includes a shutter drive lever (141), a link rod (143, 144), a shutter lever (145), and a shutter plate (147).

[0118] When the fuse cart transport unit (540) enters the connected position and the transport wheel (545) presses the shutter drive lever (141), the link rods (143, 144) connected thereto are lowered respectively, causing the shutter lever (145) to rotate around the rotation axis (146) and raise the shutter plate (147) upward. Accordingly, the shutter plate (147) covering the first terminal (120) of the first compartment is opened, allowing the first terminal (520) to be connected.

[0119] The first compartment door (150) is placed on the front of the distribution panel case (100). The first compartment door (150) is placed to cover the distribution panel case (100).

[0120] The first compartment door (150) is provided with a first compartment handle insertion port (152) into which an insertion / withdrawal handle can be inserted.

[0121] The first compartment door (150) is installed so that one side is fixed to the distribution panel housing (100) and the other side rotates to open and close the first compartment (110). That is, the first compartment door (150) is configured with a hinge so that it can be opened and closed in a hinged manner. A first compartment door handle (155) is arranged on the opposite side of the first compartment door (150) where the hinge member is installed. The user opens or closes the first compartment door (150) with respect to the first compartment (110) by opening and closing the door handle (155).

[0122] The first compartment door (150) further includes a door sliding plate (not shown) that moves up and down in conjunction with the opening and closing operation of the first compartment door handle (155).

[0123] A first door interlock rod (157) is provided to restrain the opening of the first compartment door (150) when the fuse carriage (500) is inserted. When the fuse carriage (500) moves to the connected position, the first door interlock rod (157) moves forward by a linkage mechanism to restrain the door sliding plate, thereby restraining the opening of the first compartment door handle portion (155).

[0124] A second compartment (210) is provided. An instrument transformer (600) is installed in the second compartment (210).

[0125] The second compartment (210) is constructed to accommodate an instrument transformer (600). The instrument transformer (600) is moved within the second compartment (210) on a transformer cart (240).

[0126] An instrument transformer (600) includes an iron core (620) and a coil (610).

[0127] The core (620) has a 'ㅁ' shape that wraps around the coil (610), and extends in the middle to penetrate the inside of the coil (610). The core (620) forms a magnetic path.

[0128] The coil (610) has a primary coil on the outside and a secondary coil on the inside.

[0129] A primary terminal (612) is provided on the outside of the coil (610), and a secondary terminal (not shown) is provided on the inside of the coil. The secondary terminal is connected to the first terminal (power side terminal) (652) of the wiring circuit breaker (650).

[0130] Inside the second compartment (210), a second compartment terminal (225), a second compartment rail section (230), a transformer transfer section (240), an instrument transformer (600), etc. can be placed.

[0131] The second compartment terminal (225) is installed on the upper surface of the second compartment (210). The second compartment terminal (225) is connected to the first compartment second terminal (125). The second compartment terminal (225) and the first compartment second terminal (125) may be formed integrally.

[0132] The second compartment terminal (225) is connected to the second compartment bus bar (227). Current from the high voltage section of the bus box (310) flows through the fuse (530) of the first compartment (110) to the second compartment bus bar (227).

[0133] The second compartment bus bar (227) is connected to the second compartment terminal (225) on one side and to the primary terminal (612) of the instrument transformer (600) on the other side. For this purpose, the second compartment bus bar (227) is appropriately extended and bent.

[0134] The current entering through the second compartment terminal (225) enters the instrument transformer (600) through the second compartment bus bar (227) and the primary terminal (612), is converted into low voltage current, and enters the wiring circuit breaker (650) through the secondary terminal.

[0135] When an instrument transformer (600) is installed inside the second compartment (210) and the primary terminal (612) is connected to the second compartment bus bar (227), current is supplied from the power source through the high voltage bus bar (320) and the fuse (530).

[0136] Additionally, when the instrument transformer (600) is withdrawn from the second compartment (210), the current supply through the high voltage busbar and fuse (530) is cut off.

[0137] A transformer transfer unit (240) is provided at the bottom of the instrument transformer (600). The transfer unit is commonly referred to as a truck. The transformer transfer unit (240) is provided with transfer wheels (244, 245) on a cart frame (242). The transformer transfer unit (240) may include a first transfer wheel (244) that moves along the bottom surface of the second compartment (210) and a second transfer wheel (245) that moves along the second compartment rail (230).

[0138] A second compartment rail section (230) is provided on both sides of the second compartment (210). The second compartment rail section (230) can guide the second transport wheel (245) of the transformer transport section (240) during the process of moving the instrument transformer (600) by the transformer transport section (240). The second transport wheel (245) moves along the second compartment rail section (230).

[0139] The second compartment door (250) is positioned at the front of the second compartment (210). The second compartment door (250) is positioned to cover the second compartment (210).

[0140] A second compartment door (250) is provided on the front of the second compartment (210). The second compartment door (250) is hingedly connected to one corner of the second compartment (210) and can be rotated in the form of a swing door to open and close the second compartment (210). A handle portion (255) is provided on the second compartment door (250) so that a user can open and close the second compartment door (250) by grasping it.

[0141] The second compartment door (250) can be installed so that one side is fixed to the distribution panel housing (200) and the other side can be rotated to open and close. That is, the second compartment door (250) is configured with a hinge so that it can be opened and closed in a hinged manner. A door handle (255) is arranged on the opposite side of the second compartment door (250) where the hinge member is installed. The user opens or closes the second compartment door (250) with respect to the second compartment (210) by opening and closing the second compartment door handle (255).

[0142] The second compartment door (250) further includes a door sliding plate (not shown) that moves up and down in conjunction with the opening and closing operation of the second compartment door handle (255).

[0143] A second door interlock rod (257) is provided to restrain the opening of the second compartment door (250) when the fuse carriage (500) is inserted. When the fuse carriage (500) of the first compartment (110) moves to the connected position, the first door interlock rod (157) moves forward to restrain the opening of the first compartment door (150), and the second door interlock rod (257) also moves forward by a linkage mechanism to restrain the door sliding plate and restrain the opening of the second compartment door handle portion (255).

[0144] An instrument transformer (600) is installed in the second compartment (210), and the instrument transformer (600) converts the high voltage of the current entering through the second compartment bus bar (227) into a low voltage and supplies it to the load through the wiring circuit breaker (650). This forms a secondary circuit through which a low voltage current flows.

[0145] A high voltage section is provided in the busbar (310). The high voltage section includes a high voltage busbar (320). The high voltage busbar (320) is connected to the busbar on one side and to the first terminal (120) of the first compartment on the other side, and receives current from the power supply and supplies it to the first compartment (110) (primary circuit).

[0146] In the cable room (360), the high voltage section can be extended and necessary cables can be installed.

[0147] With further reference to FIGS. 11 to 17, a compartment-linked interlock device (800) will be described. The compartment-linked interlock device (800) includes a first sliding plate assembly (or secondary circuit input interlock assembly) (700) installed in a wiring circuit breaker (650) of a second compartment (210), a rotary lever assembly (830, 840) installed on the upper portion of the secondary circuit input interlock assembly (700), and a second sliding plate assembly (810, 820) installed on the front of a transport device (160) of the first compartment (110).

[0148] First, let's look at the secondary circuit input interlock device (700) with reference to FIGS. 13 to 16. Here, FIG. 13 is a perspective view of a wiring circuit breaker portion, FIG. 14 is an exploded perspective view of the wiring circuit breaker portion of FIG. 13, and FIGS. 15 and 16 are operation diagrams of the wiring circuit breaker. FIG. 15 shows the wiring circuit breaker in the off state, and FIG. 16 shows the wiring circuit breaker in the on state.

[0149] In the second compartment (210), a secondary circuit breaker interlock assembly (700) is provided adjacent to the wiring circuit breaker (650).

[0150] A wiring circuit breaker (650) is installed inside the second compartment (210). The wiring circuit breaker (650) is connected between the secondary terminal of the instrument transformer (600) and the load. Therefore, the wiring circuit breaker (650) connects or disconnects the current supplied to the load. In other words, the wiring circuit breaker (650) opens and closes the secondary circuit.

[0151] A wiring circuit breaker (650) is provided. The wiring circuit breaker (650) is fixedly installed on the side (211) of the second compartment (210). In addition, the wiring circuit breaker (650) is placed adjacent to the second compartment door (250).

[0152] An interlock pin pressurizing portion (260) is provided on the inner surface of the second compartment door (250). When the second compartment door (250) is closed, the interlock pin pressurizing portion (260) presses the interlock pin (730) of the door interlock device.

[0153] A wiring circuit breaker (650) transmits or blocks the current from the secondary terminal of an instrument transformer (600) to a load. That is, the wiring circuit breaker (650) energizes or blocks the secondary (side) circuit. Here, the load may be a power device or control device installed in a distribution panel.

[0154] A first terminal section (power side terminal section) (652) is provided on one side of the wiring circuit breaker (650), and a second terminal section (load side terminal section) (654) is provided on the other side.

[0155] A switch lever (660) is provided to turn the circuit breaker (650) on / off. The switch lever (660) operates the mechanical part of the circuit breaker (650) to connect or disconnect the contact part.

[0156] A remote operation handle (690) is provided to operate the circuit breaker (650) from outside the second compartment (210). The remote operation handle (690) includes a remote lever (692), a cable (693), and an operation lever (695).

[0157] When a user rotates a remote lever (692) in an up-and-down direction on a remote operation handle (690) positioned outside the second compartment door (250), a cable (693) connected to the rear end of the remote lever (692) is pulled or returned to its original position, thereby moving the operation lever (695) in an up-and-down direction. The operation lever (695) supports the switch lever (660), and thus, turns the wiring circuit breaker (650) on / off.

[0158] A wiring circuit breaker (650) is mounted on the side plate (211) of the second compartment (210). A mounting bracket (670) is provided to mount the wiring circuit breaker (650). The mounting bracket (670) is formed in a 'ㄷ' shape so that the upper surface and the front and rear ends can be opened. It is formed in a size capable of accommodating the wiring circuit breaker (650).

[0159] An operating lever (695) is rotatably connected to the mounting bracket (670). The operating lever (695) is axially connected to a lever shaft (672) of the mounting bracket (670).

[0160] The operating lever (695) is provided with a cable connection port (696) to which a cable (693) is connected. Meanwhile, an arc-shaped operating hole (674) is formed in the mounting bracket (670) to enable the cable connection port (696) to rotate.

[0161] The front of the operating lever (695) is provided with a lever hand (698) that holds and moves the switch lever (660). When the operating lever (695) rotates up and down, the switch lever (660) is turned on / off by receiving the force of the lever hand (698).

[0162] A fastening hole (699) is formed on the left side (the side facing the door) of the operating lever (695) to which the plate pressurizing member (705) is coupled. The plate pressurizing member (705) also rotates in accordance with the rotational movement of the operating lever (695).

[0163] The secondary circuit input interlock device (700) may be referred to as a wiring circuit breaker input interlock device or a wiring circuit breaker interlock device linked to the opening and closing of the second compartment door.

[0164] The secondary circuit input interlock device (700) includes a first fixing bracket (710), a first sliding plate (720), and an interlock pin (730).

[0165] A first fixing bracket (710) is provided. The first fixing bracket (710) is provided to support components of a secondary circuit input interlock device (700).

[0166] The first fixing bracket (710) is attached to the side plate (211) of the second compartment (210). The first fixing bracket (710) is provided adjacent to the second compartment door (250). That is, the first fixing bracket (710) is installed close to the front of the second compartment (210). Here, when the second compartment door (250) is closed, a space must be provided between the first fixing bracket (710) and the second compartment door (250) for the inner portion of the remote control handle (690) to operate.

[0167] The first fixed bracket (710) includes a plate portion parallel to the front of the second compartment (210).

[0168] A first sliding hole (711) is formed in the first fixed bracket (710) to guide the up-and-down movement of the first sliding plate (720). The first sliding hole (711) is provided as a vertically oriented hole. A plurality of first sliding holes (711) are provided to ensure stable operation. The plurality of first sliding holes (711) may be arranged separately in the upper and lower portions of the first fixed bracket (710).

[0169] A first sliding fastening member (722) fastened to a first sliding plate (720) is inserted into the first sliding hole (711).

[0170] A pressure member action hole (713) is formed in the first fixed bracket (710) to provide a space in which the plate pressure member (705) can act. The pressure member action hole (713) is provided as a long hole that is formed wide in the vertical direction. The pressure member action hole (713) is formed to be larger than the range of motion of the plate pressure member (705).

[0171] A pin insertion hole (715) into which an interlock pin (730) is inserted is formed in the first fixed bracket (710). The pin insertion hole (715) is formed wider than the diameter of the working part of the interlock pin (730).

[0172] In the first fixed bracket (710), a fastening hole (717) is formed on each of the left and right parts of the pin insertion hole (715) to which an extension bracket (740) is fixed.

[0173] A first sliding plate (720) is provided. The first sliding plate (720) is connected to the operating lever (695) and the interlock pin (730) to restrict or allow the movement of the operating lever (695).

[0174] The first sliding plate (720) is formed in a plate shape that is arranged parallel to the first fixing bracket (710). The first sliding plate (720) can be arranged to be in contact with the first fixing bracket (710). The first sliding plate (720) can slide in an up-and-down direction while in contact with one side of the first fixing bracket (710).

[0175] A first fastening member hole (721) is formed in the first sliding plate (720) to which a first sliding fastening member (722) inserted into the first sliding hole (711) of the first fixed bracket (710) is coupled. A plurality of first sliding fastening members (722) are provided corresponding to the first sliding holes (711).

[0176] The first sliding fastening member (722) is inserted into the first sliding hole (711) and fixed to the first sliding plate (720). The first sliding fastening member (722) is coupled with a predetermined gap to prevent the first sliding plate (720) from being fixed to the first fixing bracket (710).

[0177] A fitting hole (723) into which a plate pressurizing member (705) is fitted is formed in the first sliding plate (720). The fitting hole (723) is formed to be larger than the plate pressurizing member (705) in the horizontal direction to allow horizontal movement of the plate pressurizing member (705). The fitting hole (723) fixes the plate pressurizing member (705) in the vertical direction. Accordingly, the first sliding plate (720) also moves along with the vertical movement of the plate pressurizing member (705). The plate pressurizing member (705) can extend through the fitting hole (723) to the pressurizing member operating hole (713) of the first fixing bracket (710).

[0178] A restraining hole (725) into which an interlock pin (730) is inserted is formed in the first sliding plate (720). When the restraining portion (735) at the end of the interlock pin (730) is inserted into the restraining hole (725), movement of the first sliding plate (720) is restricted, and when the restraining portion (735) of the interlock pin (730) is removed from the restraining hole (725), movement of the first sliding plate (720) is permitted.

[0179] A sliding portion (726) is formed extending from the lower portion of the restraint hole (725). The sliding portion (726) is formed as a vertical groove. The width of the sliding portion (726) is formed to be smaller than the diameter of the restraint hole (725).

[0180] The sliding part (726) slides by inserting the leg part (734) of the interlock pin (730). When the restraint part (735) of the interlock pin (730) moves inward and out of the restraint hole (725), the leg part (734) of the interlock pin (730) can move within the sliding part (726). In reality, when the first sliding plate (720) moves up and down, the sliding part (726) moves up and down along the leg part (734).

[0181] The first sliding plate (720) may have interference prevention holes (728) formed on the left and right sides of the restraint hole (725). The interference prevention holes (728) are formed as vertically oriented holes. The interference prevention holes (728) allow the fastening member of the extension bracket (740) to move without interference.

[0182] The first sliding plate (720) is provided with a lever pressure plate (729) on the upper portion. The lever pressure plate (729) may be formed as a horizontal plate. The lever pressure plate (729) contacts the rotary lever (840) to operate the rotary lever (840). When the first sliding plate (720) is stationary, the lever pressure plate (729) supports the rotary lever (840), and when the first sliding plate (720) moves upward, the lever pressure plate (729) rotates the rotary lever (840) about the lever shaft (835).

[0183] An interlock pin (730) is provided. The interlock pin (730) restricts or allows the movement of the first sliding plate (720). The interlock pin (730) moves in a direction crossing the movement direction of the first sliding plate (720). For example, if the first sliding plate (720) moves in a vertical direction, the interlock pin (730) moves in a horizontal direction.

[0184] The interlock pin (730) includes a head portion (731), a body portion (732), a leg portion (734), and a restraint portion (735).

[0185] The head (731) is positioned forward. The head (731) is a portion that comes into contact with the second compartment door (250). When the head (731) comes into contact with the second compartment door (250), a force is applied to move the interlock pin (730). The diameter of the head (731) is formed to be larger than the diameter of the body (732).

[0186] The body portion (732) forms the longest part of the interlock pin (730). The diameter of the body portion (732) is formed to be smaller than the diameter of the head portion (731). The body portion (732) is inserted into the support member (750) and moves. A portion of the body portion (732) is placed inside the extension bracket (740).

[0187] The length of the body part (732) is appropriately set considering the distance between the second compartment door (250) and the first fixed bracket (710).

[0188] The body part (732) is provided with a return spring (770).

[0189] A pinhole (733) into which a guide pin (760) is inserted is formed in the body portion (732). It is preferable that the pinhole (733) is formed in a direction perpendicular to the longitudinal direction of the interlock pin (730). It is preferable that the pinhole (733) is formed in a horizontal direction.

[0190] The leg portion (734) is formed between the body portion (732) and the restraint portion (735). The diameter of the leg portion (734) is formed smaller than the diameter of the restraint portion (735). The leg portion (734) is arranged on the inside of the extension bracket (740). When the interlock pin (730) receives force and moves inward (toward the portion where the wiring circuit breaker is installed), the leg portion (734) is placed on the restraint hole (725) of the first sliding plate (720). When the first sliding plate (720) rises, the leg portion (734) is placed on the sliding portion (726).

[0191] A restraint (735) is provided at the end of the interlock pin (730). The restraint (735) restrains the movement of the first sliding plate (720). The diameter of the restraint (735) is formed to be larger than the diameter of the leg portion (734). The diameter of the restraint (735) is formed to be smaller than the diameter of the restraint hole (725) and larger than the width of the sliding portion (726). When the interlock pin (730) is not subjected to an external force, the restraint (735) is positioned within the restraint hole (725) to restrain the movement of the first sliding plate (720), and when the interlock pin (730) is moved inward by the force of the interlock pin pressing portion (260), the restraint (735) leaves the restraint hole (725) and does not restrain the movement of the first sliding plate (720).

[0192] An extension bracket (740) is provided. The extension bracket (740) is provided to support the interlock pin (730). The extension bracket (740) is formed to protrude forward from the first fixing bracket (710).

[0193] The extension bracket (740) includes a front portion (741), a side portion (742), and a connecting portion (743). The front portion (741) is a portion spaced apart from the first fixing bracket (710) by a predetermined distance, the side portion (742) is a portion connecting the front portion and the connecting portion, and the connecting portion (743) is a portion connected to the first fixing bracket (710).

[0194] A through hole (745) into which an interlock pin (730) is inserted is formed in the front part (741) of the extension bracket (740).

[0195] A guide hole (746) is formed on the side (742) of the extension bracket (740) through which a guide pin (760) can move. The guide hole (746) is formed as a horizontal hole. The guide hole (746) enables movement of the guide pin (760) when the interlock pin (730) moves.

[0196] A fastening member (747) is provided at the joint portion (743) of the extension bracket (740) and fastened to the first fixed bracket (710).

[0197] A support member (750) is provided. The support member (750) is positioned on the front or rear side of the front part (741) of the extension bracket (740). The support member (750) may also be formed integrally with the extension bracket (740).

[0198] The support member (750) is formed in a tubular shape and the body part (732) of the interlock pin (730) is inserted into it. The support member (750) supports the interlock pin (730).

[0199] A guide pin (760) is provided. The guide pin (760) guides the movement of the interlock pin (730). The guide pin (760) is arranged in a direction perpendicular to the interlock pin (730). The guide pin (760) is arranged in a horizontal direction. The guide pin (760) is inserted and installed into the guide hole (746) of the extension bracket (740). The guide pin (760) is inserted into the pin hole (733) of the interlock pin (730) and moves together with the interlock pin (730).

[0200] The guide pin (760) sets the movement limit of the interlock pin (730). That is, when the interlock pin (730) moves forward, the guide pin (760) touches the front end of the guide hole (746) to set the forward movement limit, and when the interlock pin (730) moves backward, the guide pin (760) touches the rear end of the guide hole (746) to set the rear movement limit.

[0201] A washer (762) and a key (764) are provided to fix the guide pin (760) and provide clearance.

[0202] A return spring (770) is provided. The return spring (770) is provided in the body (732) of the interlock pin (730). The return spring (770) is supported by the head (731) of the interlock pin (730) and the support member (750). The return spring (770) provides elastic force to move the interlock pin (730) toward the front. When the interlock pin (730) moves rearward, the return spring (770) stores elastic force, and when the force applied to the interlock pin (730) is removed, the return spring (770) pushes the interlock pin (730) to return it forward.

[0203] The secondary circuit input interlock assembly (700) restricts or allows the input of the wiring circuit breaker (650) depending on whether the second compartment door (250) is opened or closed.

[0204] When the second compartment door (250) is opened, the interlock pin (730) restricts the movement of the first sliding plate (720), thereby limiting the rotation of the operating lever (695), so that the input of the wiring circuit breaker (650) is limited and the secondary circuit is opened.

[0205] When the second compartment door (250) is closed, the interlock pin (730) does not restrict the movement of the first sliding plate (720), so when the remote control handle (690) is operated to rotate the control lever (695), the circuit breaker (650) is turned on and the secondary circuit is energized.

[0206] In summary, the first sliding plate (720) is in a raised position when the wiring circuit breaker (650) is turned on and the secondary circuit is energized, and is in a lowered position when the wiring circuit breaker (650) is opened and the secondary circuit is opened.

[0207] Next, the second sliding plate assembly (810, 820) will be described with additional reference to Fig. 17. Fig. 17 is a perspective view of the second sliding plate assembly.

[0208] The second sliding plate assembly (810, 820) includes a second fixed bracket (810) and a second sliding plate (820).

[0209] A second fixed bracket (810) is provided. The second fixed bracket (810) is provided to support the second sliding plate (820) so that it can slide.

[0210] The second fixed bracket (810) is fixedly installed on the bottom panel (112) of the first compartment (110).

[0211] A second fastening member hole (812) is formed in the second fixed bracket (810) to which a second sliding fastening member (818) is coupled.

[0212] A second sliding plate (820) is provided. The second sliding plate (820) is provided to allow or restrict access to the insertion / withdrawal handle insertion port (162) of the transport device (160) of the first compartment (110).

[0213] A plurality of second sliding holes (822) are formed in the second sliding plate (820) into which a second sliding fastening member (818) is inserted and can operate.

[0214] The second sliding plate (820) moves horizontally, i.e., in the left-right direction, along the plurality of second sliding fastening members (818).

[0215] One end of the second sliding plate (820) is partially cut to provide an opening (823). When the second sliding plate (820) moves to the left, the insertion / withdrawal handle insertion port (162) of the transport device (160) is opened through the opening (823).

[0216] The second sliding plate (820) is provided with a lever connection part (824) connected to a rotary lever (840). A connection hole (825) is formed in the lever connection part (824).

[0217] When the second sliding plate (820) moves to the left, the insertion / withdrawal handle insertion port (162) is opened, and when the second sliding plate (820) moves to the right, the insertion / withdrawal handle insertion port (162) is closed.

[0218] Next, the rotary lever assembly (830, 840) will be described.

[0219] The rotary lever assembly (830, 840) includes a lever bracket (830) and a rotary lever (840).

[0220] A lever bracket (830) is provided. The lever bracket (830) is provided to support the rotary lever (840) so that it can rotate.

[0221] The lever bracket (830) is installed on the lower part of the bottom panel (112) of the first compartment (110) or the upper part of the front panel (212) of the second compartment (210).

[0222] The lever bracket (830) can be formed in a ‘ㄷ’ shape to accommodate the rotary lever (840).

[0223] A lever shaft (835) is provided on the lever bracket (830).

[0224] A stopper (836) is provided on the lever bracket (830) to limit the rotation of the rotary lever (840).

[0225] A rotary lever (840) is provided. The rotary lever (840) receives the force of the lever pressure plate (729) of the first sliding plate (720) and rotates to move the second sliding plate (820).

[0226] The rotary lever (840) is connected to the lever bracket (830) by a lever shaft (835) and is capable of rotational movement.

[0227] The rotary lever (840) has two lever arms (841, 843) that extend like two arms based on the lever shaft hole (845). The first lever arm (841) and the second lever arm (843) are arranged to be spaced apart from each other by a predetermined distance.

[0228] Here, the first lever arm (841) extends downward toward the first sliding plate (720). The first lever arm (841) may be formed in a curved shape in the shape of an arc. Accordingly, it can effectively receive the vertical movement of the first sliding plate (720) that is in contact with the downward direction.

[0229] The second lever arm (843) extends upward toward the second sliding plate (820). A connecting hole (844) is formed in the second lever arm (843), and is rotatably connected by a connecting member (845) that is connected to the connecting hole (825) of the second sliding plate (820) and the connecting hole (844) of the second lever arm (843).

[0230] The second lever arm (843) is connected to the second sliding plate (820) so that when the rotary lever (840) rotates, the second sliding plate (820) moves linearly left and right.

[0231] Here, at least one of the connecting holes (825, 844) is formed as an upper and lower hole.

[0232] A lever return spring (850) is provided.

[0233] A lever return spring (850) is provided to move the rotary lever (840) to its original position. The lever return spring (850) is provided between the lever bracket (830) and the second lever arm (843) of the rotary lever (840).

[0234] When the first sliding plate (720) rises, the lever return spring (850) is stretched and elastic force is stored, and when the first sliding plate (720) descends, the rotation lever (840) rotates in the direction in which the first lever arm (841) descends (counterclockwise) by the restoring force of the lever return spring (850). Here, the rotation limit of the rotation lever (840) is the point at which the first lever arm (841) touches the stopper (836).

[0235] With further reference to FIGS. 18 and 19, the operation of a compartment-linked interlock device (800) according to one embodiment of the present invention will be described. FIG. 18 shows the off state of the wiring circuit breaker, i.e., the secondary circuit open state, and FIG. 19 shows the on state of the wiring circuit breaker, i.e., the secondary circuit closed state.

[0236] First, let's examine the state in which the second compartment door (250) of the second compartment (210) is open. Refer to FIGS. 11 to 13 and FIG. 18.

[0237] Since the second compartment door (250) is open, the interlock pin pressurization portion (260) is separated from the interlock pin (730). At this time, the switch lever (660) of the wiring circuit breaker (650) is in the off state.

[0238] The interlock pin (730) is in a state where it protrudes forward under the force of the return spring (770). The restraining portion (735) of the interlock pin (730) is placed in the restraining hole (725) of the first sliding plate (720). Since the restraining portion (735) of the interlock pin (730) is fitted into the restraining hole (725) of the first sliding plate (720), the interlock pin (730) prevents the up-and-down movement of the first sliding plate (720).

[0239] Since the operating lever (695) of the circuit breaker (650) is connected to the first sliding plate (720) via the plate pressurizing member (705), the operating lever (695) cannot be rotated to the On position. That is, when the second compartment door (250) is open, the closing action of the circuit breaker (650) is restricted, and thus the secondary circuit closing is restricted.

[0240] Next, let's examine the state in which the second compartment door (250) is closed. Refer to Fig. 15.

[0241] When the second compartment door (250) is closed, the interlock pin pressurizing portion (260) contacts the interlock pin (730) and pushes the interlock pin (730) backward. At this time, the switch lever (660) of the wiring circuit breaker (650) is in the off state.

[0242] The interlock pin (730) overcomes the force of the return spring (770) and moves backward. Elastic force is stored in the return spring (770). As the interlock pin (730) moves backward, the restraining portion (735) of the interlock pin (730) is released from the restraining hole (725) of the first sliding plate (720). When the restraining portion (735) of the interlock pin (730) is released from the restraining hole (725) of the first sliding plate (720), the interlock pin (730) cannot restrain the up-and-down movement of the first sliding plate (720), and the first sliding plate (720) is in a state where the up-and-down movement is possible.

[0243] The operating lever (695) of the circuit breaker (650) for wiring is connected to the first sliding plate (720) via the plate pressurizing member (705), so that the operating lever (695) can be rotated to the On position. That is, since the closing operation of the circuit breaker (650) is permitted when the second compartment door (250) is closed, the secondary circuit can be closed.

[0244] Next, let's examine the state in which the wiring circuit breaker (650) is inserted while the second compartment door (250) is closed. Refer to FIG. 16 and FIG. 19.

[0245] When the remote lever (692) of the remote operation handle (690) is raised, the cable (693) is pulled, and the operation lever (695) rotates about the lever shaft (672). Since the operation lever (695) is fixed to the first sliding plate (720) through the plate pressurizing member (705), the first sliding plate (720) also moves upward. When the first sliding plate (720) moves upward, the leg portion (734) of the interlock pin (730) relatively slides along the sliding portion (726) of the first sliding plate (720). When the switch lever (660) of the circuit breaker (650) is rotated to the On state by the rotation of the operation lever (695), the secondary circuit is turned on.

[0246] As the first sliding plate (720) moves upward, the lever pressure plate (729) pushes the rotary lever (840). The first lever arm (841) of the rotary lever (840) is pushed upward by the lever pressure plate (729), and the rotary lever (840) rotates clockwise about the lever shaft (835) while overcoming the force of the lever return spring (850). As the second lever arm (843) of the rotary lever (840) rotates clockwise, the lever connecting portion (824) moves to the right. Accordingly, the second sliding plate (820) moves to the right to close the insertion / withdrawal handle insertion port (162) of the transport device portion (160) of the first compartment (110). Therefore, movement of the fuse carriage (500) is impossible. That is, when a wiring circuit breaker (650) is inserted and a secondary circuit is connected, movement of the fuse carrier (500) is restricted to prevent connection or disconnection of the primary circuit.

[0247] Next, let's examine the state in which the wiring circuit breaker (650) is opened while the second compartment door (250) is closed. Refer to FIG. 15 and FIG. 18.

[0248] When the remote lever (692) of the remote operation handle (690) is lowered, the cable (693) returns to its original position, and the operation lever (695) rotates about the lever shaft (672), thereby switching the switch lever (660) to the Off position. Since the operation lever (695) is fixed to the first sliding plate (720) through the plate pressurizing member (705), the first sliding plate (720) also moves downward. When the first sliding plate (720) moves downward, the leg portion (734) of the interlock pin (730) relatively slides along the sliding portion (726) of the first sliding plate (720). When the switch lever (660) of the circuit breaker (650) is rotated to the Off state by the rotation of the operation lever (695), the opening of the secondary circuit is completed.

[0249] As the first sliding plate (720) moves downward, the force of the lever pressure plate (729) pushing up the rotary lever (840) is removed. The first lever arm (841) of the rotary lever (840) moves down along the lever pressure plate (729) due to the restoring force of the lever return spring (850), and the rotary lever (840) rotates counterclockwise around the lever shaft (835). As the second lever arm (843) of the rotary lever (840) also rotates counterclockwise, the lever connecting portion (824) moves to the left. Accordingly, the second sliding plate (820) moves to the left to open the insertion / extraction handle insertion port (162) of the transport device portion (160) of the first compartment (110). Therefore, the movement of the fuse carriage (500) is possible. That is, when the wiring circuit breaker (650) is switched to the Off position and the secondary circuit is opened, the movement of the fuse carriage (500) is possible, so that the primary circuit can be connected or disconnected.

[0250] According to a distribution board having an interlock device according to the present invention, when a circuit breaker for wiring connecting a low-voltage section of a second compartment and a load is turned on, the insertion / withdrawal handle insertion port for moving a fuse carriage in a first compartment is closed, thereby preventing movement of the fuse carriage.

[0251] Accordingly, while the secondary circuit is connected, connection or disconnection of the primary circuit is prevented, thereby protecting the user.

[0252] Therefore, it prevents safety accidents and meets legal requirements.

[0253] The embodiments described above are illustrative of the best possible implementations of the present invention, and those skilled in the art will appreciate that various modifications and variations can be made without departing from the essential characteristics of the present invention. Therefore, these embodiments are not intended to limit the technical spirit of the present invention, but rather merely to illustrate it. Therefore, it should be understood that the scope of the technical spirit of the present invention is not limited by these embodiments. In other words, the scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included within the scope of the rights of the present invention.

[0254] [Explanation of symbols]

[0255] 100 transformer panels

[0256] 110 First compartment

[0257] 112 Bottom panel

[0258] 115 insertion hole

[0259] 120 Terminal

[0260] 130 Rail section of compartment 1

[0261] 140 shutter assembly

[0262] 152 Compartment 1 handle insert

[0263] 160 Transport device section

[0264] 162 Inlet / outlet handle insertion port

[0265] 163 lead screw

[0266] 210 Second compartment

[0267] 220 Terminal

[0268] 227 Second compartment bus bar

[0269] 230 Rail section of compartment 1

[0270] 240 Transformer Transfer Unit

[0271] 250 Second compartment door

[0272] 260 interlock pin pressurized section

[0273] 310 Mothership Room

[0274] 360 cable room

[0275] 500 fuse bogie

[0276] 510 Terminal 1

[0277] 520 Terminal 2

[0278] 530 fuse

[0279] 540 Fuse Cart Transfer Unit

[0280] 600 instrument transformer

[0281] 650 wiring circuit breaker

[0282] 660 switch lever

[0283] 690 remote control handle

[0284] 692 Remote Lever

[0285] 693 cable

[0286] 695 operating lever

[0287] 700 Secondary Circuit Input Interlock Device

[0288] 705 plate pressurized ball

[0289] 710 fixed bracket

[0290] 711 1st sliding hole

[0291] 713 Pressure ball action hole

[0292] 715 pin insertion hole

[0293] 720 1st sliding plate

[0294] 722 First sliding fastening member

[0295] 723 insertion hole

[0296] 725 Restraint Hall

[0297] 729 Lever Pressure Plate

[0298] 730 interlock pin

[0299] 735 Restraints

[0300] 800-compartment interlock device

[0301] 810 Second Fixed Bracket

[0302] 818 Second sliding fastening member

[0303] 820 Second sliding plate

[0304] 822 Second sliding hole

[0305] 823 Opening

[0306] 830 lever bracket

[0307] 835 lever shaft

[0308] 836 Stopper

[0309] 840 rotary lever

[0310] 841 First lever arm

[0311] 843 Second lever arm

Claims

1. The first compartment where the first power device is installed; A second compartment is disposed adjacent to the first compartment and has a second power device connected to the first power device installed therein; A circuit breaker installed in the second compartment and electrically connected to the second power device to open and close the secondary circuit; A first sliding plate that is installed on one side of the circuit breaker so as to be able to slide and is coupled to a switch lever of the circuit breaker; and A second sliding plate is formed in the first compartment and is installed in a sliding manner in front of an insertion port for a pull-out handle for moving the first power device, and moves in conjunction with the first sliding plate. A distribution board having a compartment-linked interlock device in which the draw-out handle insertion port is opened or closed according to the movement of the second sliding plate.

2. In paragraph 1, A distribution board having a compartment-linked interlock device further comprising a rotary lever installed between the first sliding plate and the second sliding plate, the rotary lever converting the vertical movement of the first sliding plate into the horizontal movement of the second sliding plate.

3. In paragraph 2, A distribution board having a compartment-linked interlock device in which a first lever arm portion and a second lever arm portion are extended at a predetermined interval based on the axis of the above-mentioned rotating lever.

4. In paragraph 3, A distribution board having a compartment-linked interlock device in which a lever connecting portion that is axially coupled to the rotary lever is protruded on one side of the second sliding plate.

5. In paragraph 4, A distribution board having a compartment-linked interlock device in which an insertion hole into which the lever connecting part is inserted is formed on the bottom surface of the first compartment.

6. In paragraph 1, A distribution board having a compartment-linked interlock device, in which a first fixed bracket for supporting the movement of the first sliding plate is installed on the side of the second compartment.

7. In paragraph 6, A distribution board having a compartment-linked interlock device in which a first sliding hole for guiding the vertical movement of the first sliding plate is formed in the first fixed bracket.

8. In paragraph 1, A distribution board having a compartment-linked interlock device in which a fitting hole is formed in the first sliding plate to fit a plate pressurizing member coupled to the switch lever of the circuit breaker.

9. In paragraph 2, A distribution board having a compartment-linked interlock device in which a lever pressure plate that contacts the rotating lever is provided on the upper part of the first sliding plate.

10. In paragraph 1, A distribution board having a compartment-linked interlock device, in which a second fixed bracket for supporting the movement of the second sliding plate is installed on the front side of the insertion / withdrawal handle of the first compartment.

11. In paragraph 10, A distribution board having a compartment-linked interlock device in which a second sliding fastening member, which is fastened to the second fixed bracket, is inserted into the second sliding plate and a plurality of second sliding holes are formed to enable sliding movement.

12. In paragraph 2, A distribution board having a compartment-linked interlock device in which a lever bracket to which the rotary lever is axially coupled is installed in the second compartment.

13. In paragraph 12, A distribution board having a compartment-linked interlock device in which the lever bracket is provided with a stopper that restricts the rotation of the rotary lever.

14. In paragraph 3, A distribution board having a compartment-linked interlock device in which the first lever arm portion extends downward toward the first sliding plate and is formed to be bent in an arc shape.

15. In paragraph 3, A distribution board having a compartment-linked interlock device in which the second lever arm extends upward toward the second sliding plate.

16. In paragraph 4, A distribution board having a compartment-linked interlock device in which a connecting hole is formed in the second lever arm portion to be axially connected to the lever connecting portion.

17. In paragraph 12, A distribution board having a compartment-linked interlock device having a lever return spring provided between the above lever bracket and the second lever arm.

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