Electric shock protection distribution system

Abstract

The present invention relates to an electric shock protection distribution board that can prevent electric shock and fire accidents caused by leakage current by recovering and notifying of leakage current even when it occurs in a distribution board or switchboard, and can operate normally even if the distribution board and / or the load side is flooded. According to the present invention, an electric shock protection distribution board is provided, characterized by comprising: a distribution board body; a distribution board function module provided in the distribution board body and including at least one of a wiring circuit breaker, a leakage circuit breaker, and an electric shock protector; a grounding means for the body provided to ground the distribution board body; and a leakage current recovery module provided in the distribution board body and configured to recover to the neutral line of an active connection line.

Description

Technology Field

[0001] The present invention relates to an electric shock protection distribution board, and more specifically, to an electric shock protection distribution board that can prevent electric shock and fire accidents caused by leakage current by recovering and notifying of leakage current even when it occurs in a distribution board or switchboard, and can operate normally even if the distribution board and / or the load side is flooded. Background Technology

[0003] Although distribution boards and distribution boards serve the same purpose, in detail, a distribution board is equipment that gathers overcurrent circuit breakers of branch circuits that distribute electricity by system or purpose in one place, and a distribution board is equipment that gathers overcurrent circuit breakers of branch circuits that distribute electricity by load in one place.

[0004] Fires in distribution panels can occur due to various causes such as short circuits, overcurrents, leakage currents, insulation degradation, and sparks. If a fire in a distribution panel is not suppressed in the early stages, it can lead to a major fire accident resulting in significant casualties. Therefore, early suppression of fires occurring in distribution panels is absolutely essential.

[0005] Meanwhile, if a fire occurs in a distribution panel, firefighting is difficult because firefighters cannot access the panel due to the risk of electric shock, which significantly increases the likelihood of a major fire accident; therefore, measures are required to prevent electric shock accidents caused by current leakage from the distribution panel.

[0006] In addition, when distribution panels are flooded due to torrential rains or monsoon rains caused by abnormal weather conditions, leakage current flows through the water into the human body, potentially causing electric shock accidents; therefore, countermeasures are also necessary.

[0007] Electric shock is a phenomenon in which the human body reacts when the leakage current flowing from a power source through the human body to the ground surface exceeds a certain level.

[0008] Generally, if a leakage current of 15mA or more flows, it causes convulsions, and if it exceeds 50mA, it leads to death. The primary cause of death is cardiac arrest, in which the heart stops functioning as the current flowing through it damages the nerves. The risk of electric shock is related to the body's resistance at the time of current application, which depends significantly on the condition of the skin.

[0009] When a distribution board is submerged in water, if a human body comes into contact with the water or a conductor part that is energized through water, current flows from the exposed conductor of the equipment through the water and the human body to the ground, which is the grounding surface. At this time, the human body's skin is likely to be wet, and in such cases, the contact resistance is extremely low, so it becomes a very dangerous situation.

[0010] A short circuit between power lines is a problem that occurs when the insulation between two lines decreases, leading to increased electrical conductivity and a sudden flow of current, causing damage to electrical equipment such as fires or short circuits. Generally, air has very high insulation properties, so it maintains electrical insulation between two lines using air as a medium.

[0011] However, if a fluid with high electrical conductivity fills the space between the two wires due to flooding or other reasons, the current between the phases increases rapidly, causing a short circuit.

[0012] A prior art having a leakage current limiting device as a related technology is described with reference to FIG. 1. FIG. 1 is a schematic diagram of a three-phase four-wire inter-phase current and leakage current limiting device of an electrical facility according to the prior art.

[0013] As illustrated in FIG. 1, Korean Published Patent No. 10-2023-0061805 describes a three-phase four-wire inter-phase current and leakage current limiting device for flooded electrical equipment that is connected to the distribution line of the electrical equipment and prevents electric shock in the event of flooding of the electrical equipment or other electrical equipment located nearby that is electrically connected to the electrical equipment, wherein one end is equipped with three-phase line terminals (12a, 12b, 12c) that are respectively electrically connected to the three-phase lines (2a, 2b, 2c) of the distribution line, and the other end is equipped with a phase line section (22a, 22b, 22c) that is electrically connected to the electrical equipment (200) and is not surrounded by an insulator; One end is equipped with neutral line terminals (14a, 14b, 14c) that are electrically connected to the neutral line (4) of the power distribution line, and the other end is electrically connected to the electrical equipment (200) and has internal neutral lines (34a, 34b, 34c) that are respectively electrically connected to tubular lines (26a, 26b, 26c) made of a conductor material surrounding the upper line section (22a, 22b, 22c); One end is provided with a grounding wire terminal (16a, 16b, 16c) electrically connected to a grounding wire (6) of a power distribution line, and the other end is electrically connected to an electrical facility (200), and there are internal grounding wires (36a, 36b, 36c) each electrically connected to a housing ground (28a, 28b, 28c) which is formed of an insulator and has ground wiring provided on the inner circumference of a housing surrounding a tubular line (26a, 26b, 26c); A three-phase four-wire inter-phase current and leakage current limiting device for flooded electrical equipment is disclosed, which can limit a sudden rise in current of electrical equipment to prevent electric shock, by including insulating tubes (24a, 24b, 24c) that are respectively arranged between internal phase lines (32a, 32b, 32c) and tubular lines (26a, 26b, 26c) and each surround the internal phase lines (32a, 32b, 32c).

[0014] In this technology, the limited inter-phase current and the current coming from the electrical load to the internal neutral wire (34a, 34b, 34c) are combined, and the current flowing through the tubular line (26a, 26b, 26c) flows to the ground through the housing ground (28a, 28b, 28c) and the internal ground wire (36a, 36b, 36c), thereby limiting the leakage current.

[0015] However, since the housing ground is grounded to the earth using Class 3 grounding, there is a resistance of about 100 ohms between the earth and the housing ground. Therefore, there is a risk of electric shock if a pedestrian comes into contact with a street lamp pole that has been grounded in the event of flooding.

[0016] Meanwhile, in the past, when there was no neutral wire on the secondary side of the transformer, only Class 3 grounding was performed on the electrical equipment that was the load. Therefore, even if leakage current flowed through the electrical equipment when contacted during normal times, the leakage current was diverted to the ground, so there was no risk of electric shock. However, when contacted during flooding, the leakage current that should have flowed to the ground flowed into the human body, leading to a problem of exposure to the risk of electric shock.

[0017] Specifically, when a switchboard is submerged in water, if a human body comes into contact with the water or a conductor part that is energized through the water, current flows from the exposed conductor of the equipment through the water and the human body to the ground, which is the grounding surface. At this time, the human body's skin is likely to be wet, and in such cases, the contact resistance is extremely low, so it becomes a very dangerous situation.

[0018] A short circuit between power lines is a problem that occurs when the insulation between two lines decreases, leading to increased electrical conductivity and a sudden flow of current, causing damage to electrical equipment such as fires or short circuits. Generally, air has very high insulation properties, so it maintains electrical insulation between two lines using air as a medium.

[0019] However, if a fluid with high electrical conductivity fills the space between the two wires due to flooding or other reasons, the current between the phases increases rapidly, causing a short circuit.

[0020] A prior art having a leakage current limiting device as a related technology is described with reference to FIG. 1. FIG. 1 is a schematic diagram of a three-phase four-wire inter-phase current and leakage current limiting device of an electrical facility according to the prior art.

[0021] As illustrated in FIG. 1, Korean Published Patent No. 10-2023-0061805 describes a three-phase four-wire inter-phase current and leakage current limiting device for flooded electrical equipment that is connected to the distribution line of the electrical equipment and prevents electric shock in the event of flooding of the electrical equipment or other electrical equipment located nearby that is electrically connected to the electrical equipment, wherein one end is equipped with three-phase line terminals (12a, 12b, 12c) that are respectively electrically connected to the three-phase lines (2a, 2b, 2c) of the distribution line, and the other end is equipped with a phase line section (22a, 22b, 22c) that is electrically connected to the electrical equipment (200) and is not surrounded by an insulator; One end is equipped with neutral line terminals (14a, 14b, 14c) that are electrically connected to the neutral line (4) of the power distribution line, and the other end is electrically connected to the electrical equipment (200) and has internal neutral lines (34a, 34b, 34c) that are respectively electrically connected to tubular lines (26a, 26b, 26c) made of a conductor material surrounding the upper line section (22a, 22b, 22c); One end is provided with a grounding wire terminal (16a, 16b, 16c) electrically connected to a grounding wire (6) of a power distribution line, and the other end is electrically connected to an electrical facility (200), and there are internal grounding wires (36a, 36b, 36c) each electrically connected to a housing ground (28a, 28b, 28c) which is formed of an insulator and has ground wiring provided on the inner circumference of a housing surrounding a tubular line (26a, 26b, 26c); A three-phase four-wire inter-phase current and leakage current limiting device for flooded electrical equipment is disclosed, which can limit a sudden rise in current of electrical equipment to prevent electric shock, by including insulating tubes (24a, 24b, 24c) that are respectively arranged between internal phase lines (32a, 32b, 32c) and tubular lines (26a, 26b, 26c) and each surround the internal phase lines (32a, 32b, 32c).

[0022] In this technology, the limited inter-phase current and the current coming from the electrical load to the internal neutral wire (34a, 34b, 34c) are combined, and the current flowing through the tubular line (26a, 26b, 26c) flows to the ground through the housing ground (28a, 28b, 28c) and the internal ground wire (36a, 36b, 36c), thereby limiting the leakage current.

[0023] However, since the housing ground is grounded to the earth using Class 3 grounding, there is a resistance of about 100 ohms between the earth and the housing ground. Therefore, when the distribution panel is submerged, there is a risk of electric shock if a field worker or others come into contact with the grounded housing of the distribution panel. Prior art literature

[0025] Republic of Korea Published Patent Application 10-2023-0061805 (Published May 9, 2023) Republic of Korea Registered Patent Application 10-2216183 (Announced February 16, 2021) Republic of Korea Registered Patent Application 10-2459481 (Announced October 26, 2022) Republic of Korea Published Patent Application 10-2024-0132758 (Published September 4, 2024) The problem to be solved

[0026] Accordingly, the present invention, which aims to solve the aforementioned conventional problems, is intended to provide an electric shock protection distribution board that can prevent electric shock and fire accidents caused by leakage current by recovering and notifying of leakage current even when it occurs in a distribution board or switchboard, and enables the distribution board and switchboard to operate normally even if they are submerged.

[0027] The problems solved by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0029] According to one aspect of the present invention for achieving the above objectives and other features of the present invention, an electric shock protection distribution board is provided, characterized in that it comprises a leakage current recovery module configured to recover to the neutral line of an external power supply line when a leakage current occurs from at least one of the distribution board and a load-side device connected to the distribution board.

[0030] According to another aspect of the present invention, an electric shock protection distribution board is provided, characterized by comprising: a distribution board body; a distribution board function module provided in the distribution board body and including at least one of a wiring circuit breaker, a leakage circuit breaker, and an electric shock protector; a grounding means for the body provided to ground the distribution board body; and a leakage current recovery module provided in the distribution board body and configured to be recovered to the neutral line of an active connection line.

[0031] In another aspect of the present invention, the grounding means for the main body may be composed of a grounding busbar of a conductive metal that is electrically connected to the main body of the distribution board to provide common grounding.

[0032] In another aspect of the present invention, the leakage current recovery module may include: a leakage current induction unit configured to electrically induce a leakage current; and a leakage current recovery circuit unit configured to recover the leakage current induced by the leakage current induction unit to the neutral line of an active connection line.

[0033] In another aspect of the present invention, the leakage current induction unit may be configured as a leakage current grounding busbar that is coupled to the main body of the distribution board through an insulator, with one side connected to a common ground line and the other side connected to a neutral line.

[0034] In another aspect of the present invention, the leakage current recovery circuit unit may include: a connection line connected to each of the hot line, neutral line, and ground line of a power system; a recovery line connected to recover the leakage current to the neutral line; and a notification unit configured to notify whether the connection status between the neutral line and the recovery line is normal.

[0035] In another aspect of the present invention, the notification unit may include a switching unit that performs a switching operation based on the connection status between the neutral line and the recovery line; and an LED that visually notifies whether the connection status is normal according to the switching operation of the switching unit.

[0036] In another aspect of the present invention, the leakage current recovery module may further include a leakage current measuring unit configured to measure a leakage current; and a display unit that displays the amount of leakage current measured by the leakage current measuring unit.

[0037] In another aspect of the present invention, the leakage current recovery module may further include a warning notification unit configured to provide a warning notification, either visually or audibly, based on the measurement result from the leakage current measuring unit.

[0038] In another aspect of the present invention, the warning notification unit is composed of at least one of a warning light module and a speaker module, and when a leakage current is measured by the leakage current measuring unit or when the measured value of the leakage current is a preset value, the lamp of the warning light module is turned on or a warning sound is generated from the speaker module. Effects of the invention

[0040] The electric shock protection distribution plate according to the present invention provides the following effects.

[0041] First, the present invention has the effect of accurately detecting and managing even minute leakage currents that do not cause the leakage circuit breaker to operate by actively recovering all leakage currents generated in the distribution board and measuring them in real time.

[0042] Secondly, the present invention has the effect of preventing short circuits in internal circuits and safely recovering leakage current through a sealed or waterproof housing (distribution board body) and a leakage current recovery component, even when the load side, such as a distribution board and / or an external device connected to an outlet, is submerged, thereby preventing or significantly reducing the risk of electric shock accidents and maintaining the normal functioning of the power system even in the event of submersion.

[0043] Third, the present invention provides an early warning to the user through a notification function before the leakage current reaches a dangerous level, thereby enabling the user to recognize potential hazards in advance and take immediate action, which has the effect of preventing major electric shock and fire accidents.

[0044] Fourth, the present invention enables the rapid identification of the location and cause of leakage current by providing accurate information through a notification module when leakage current occurs, which has the effect of increasing the equipment operating rate by enabling efficient maintenance without unnecessary power cutoff.

[0045] The effects of the present invention are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below. Brief explanation of the drawing

[0047] FIG. 1 is a schematic diagram of a three-phase four-wire inter-phase current and leakage current limiting device of an electrical facility according to the prior art. FIG. 2 is a drawing showing the configuration of an electric shock protection distribution board according to the present invention. FIG. 3 is a diagram showing the circuit configuration of a leakage current recovery module included in an electric shock protection distribution board according to the present invention. FIG. 4 is a diagram illustrating the operation of a switching unit of a leakage current recovery module included in an electric shock protection distribution board according to the present invention. FIG. 5 is a photograph of a prototype electric shock protection distribution board according to the present invention, showing the exterior. FIG. 6 is a photograph of a prototype of an electric shock protection distribution board according to the present invention, showing a part of the distribution board, a grounding means for the main body, and a grounding busbar for leakage current of a leakage current recovery module. FIG. 7 is a photograph of a prototype electric shock protection distribution board according to the present invention, showing the internal configuration of the distribution board. Specific details for implementing the invention

[0048] Further objects, features, and advantages of the present invention can be more clearly understood from the following detailed description and the accompanying drawings.

[0049] Before providing a detailed description of the present invention, it should be understood that the present invention is capable of various modifications and may have various embodiments, and that the examples described below and illustrated in the drawings are not intended to limit the present invention to specific embodiments, but rather include all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention.

[0050] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0051] The terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0052] Additionally, terms such as "...part," "...unit," and "...module" described in the specification refer to a unit that processes at least one function or operation, and this may be implemented in hardware, software, or a combination of hardware and software.

[0053] Furthermore, in the description referring to the attached drawings, identical components are assigned the same reference numeral regardless of drawing symbols, and redundant descriptions thereof are omitted. In describing the present invention, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of the present invention, such detailed description is omitted.

[0054] The electric shock protection distribution panel according to the present invention includes a leakage current recovery component separate from the load-side grounding connection component, so that even when leakage current occurs in a distribution panel or switchboard (hereinafter collectively referred to as 'distribution panel'), it can recover the leakage current and provide a notification to prevent electric shock accidents and fire accidents caused by the leakage current, and is configured to operate normally even if the distribution panel and / or the load side is flooded.

[0055] In the description of the present invention, the distribution board should be understood as a concept that includes the high-voltage board, low-voltage board, distribution board, and motor control board (MCC).

[0056] Hereinafter, an electric shock protection distribution board according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0057] FIG. 2 is a diagram showing the configuration of an electric shock protection distribution board according to the present invention, FIG. 3 is a diagram showing the circuit configuration of a leakage current recovery module included in the electric shock protection distribution board according to the present invention, and FIG. 4 is a diagram explaining the operation of the switching part of the leakage current recovery module included in the electric shock protection distribution board according to the present invention. FIG. 5 to 7 are photographs of a prototype electric shock protection distribution board according to the present invention, FIG. 5 is a photograph of the exterior, FIG. 6 is a photograph of a part of the distribution board, a grounding means for the main body, and a leakage current grounding busbar of the leakage current recovery module, FIG. 7 is a photograph of the internal configuration of the distribution board.

[0058] The electric shock protection distribution board according to the present invention may be configured to include a leakage current recovery module configured to recover leakage current from a load-side device of the distribution board to the neutral line of an external power supply line.

[0059] As shown in FIGS. 2 to 7, the electric shock protection distribution board according to the present invention includes a distribution board body (100), a distribution board function module (200), a grounding means for the body (300), and a leakage current recovery module (400).

[0060] Specifically, as shown in FIGS. 2 to 7, the electric shock protection distribution board according to the present invention comprises: a distribution board body (100); a plurality of distribution board function modules (200) configured to perform the function of a distribution board provided in the distribution board body (100); a grounding means for the main body (grounding means for the enclosure) (300) that is directly grounded to the distribution board body (100) and electrically connected; and a leakage current recovery module (400) provided in the distribution board body (100) and configured to recover leakage current generated from the distribution board and / or load-side equipment to the neutral line of the active connection line.

[0061] The above distribution board main body (100) is configured with a sealed structure so that internal components do not come into contact with water when exposed to water, such as rainwater, or when submerged.

[0062] The above distribution board function module (200) is a component configured to perform the function of the distribution board provided in the above distribution board main body (100).

[0063] For example, the plurality of distribution board function modules (200) may include a wiring circuit breaker (210), a ground fault circuit breaker (220), an electric shock protector (230), etc.

[0064] A circuit breaker is a unit that protects wires and electrical devices from overload and short-circuit accidents, and a leakage circuit breaker is a device that detects and cuts off leakage current and is used to prevent electric shock accidents and fires, and an electric shock protector is a unit that detects leakage current similarly to a leakage circuit breaker but is specialized for protecting people from electric shock.

[0065] The distribution board function module (200), including the above-mentioned wiring circuit breaker, earth leakage circuit breaker, electric shock protector, etc., is a known type applied in distribution boards, so a detailed description thereof is omitted.

[0066] Furthermore, the grounding means (300) for the main body is a component that directly grounds the main body (100) of the distribution board and is a component such as a grounding busbar formed of a conductive metal.

[0067] This grounding means (300) for the main body is composed of a conventional grounding busbar for an enclosure that is provided in the distribution board to ground the distribution board.

[0068] Next, the leakage current recovery module (400) is a component configured to be provided in the distribution board body (100) and configured to recover leakage current generated from the distribution board and / or load-side equipment to the neutral line of the power cable.

[0069] Specifically, the leakage current recovery module (400) comprises a leakage current induction unit (410) configured to electrically induce leakage current generated from the distribution board and / or load-side equipment, provided in the distribution board body (100), and a leakage current recovery circuit unit (420) configured to circuitly recover the leakage current induced in the leakage current induction unit (410) to the neutral line of the power cable.

[0070] The above leakage current induction unit (410) is a component configured to electrically induce leakage current generated in a load-side device including an outlet or a component inside the distribution board to which the distribution board and / or external device is connected, and includes a leakage current grounding busbar (411) which is coupled to the distribution board body (100) through a fixing piece (e.g., a fixing screw), and one side is connected to a common ground (Type 3 ground) line and the other side is electrically connected to a leakage current recovery circuit unit (420) (specifically, a neutral line (422)), and an insulator (412) which is interposed between the distribution board body (100) and the leakage current grounding busbar (411) so that the leakage current grounding busbar (411) is insulatedly coupled to the distribution board body (400).

[0071] And the above leakage current recovery circuit unit (420) is a component configured to recover the leakage current induced in the above leakage current induction unit (410) to a neutral line, and comprises a phase line connection part (421) connected to a phase line consisting of one phase or three phases, a neutral line connection part (422) connected to a neutral line to which the enclosure grounding busbar (411) for leakage current of the leakage current induction unit (410) is electrically connected to each of the above main body grounding means (300) and the enclosure grounding busbar (411) for leakage current, and a ground line connection part (423) electrically connected to a ground line which is an external common grounding line, and a connection line (421, 422, 423); It includes: a recovery line (424) connected to recover leakage current generated in a load-side device, including a power outlet or an internal component of the power distribution board to which an external device is connected, to the neutral line portion (422) of the connection line (421, 422, 423); and a notification unit (430) configured to notify whether the connection status (connection status) between the neutral line portion (422) of the connection line (421, 422, 423) and the recovery line (424) is normal.

[0072] The above notification unit (430) includes a switching unit (431) that switches according to whether the connection state (connection state) between the neutral line (422) of the connection line (421, 422, 423) and the recovery line (424) is normal, and an LED (432-1, 432-2) that visually notifies whether the connection state is normal according to the switching operation of the switching unit (431).

[0073] This notification unit (430) indicates that the neutral line (422) and the return line (424) are normally connected when both LEDs (432-1, 432-2) light up simultaneously, and indicates that the neutral line (422) and the return line (424) are abnormally connected when only one of the two LEDs (432-1, 432-2) light up.

[0074] Additionally, the leakage current recovery module (400) may further include a leakage current measuring unit (not shown) configured to measure leakage current, and a display unit (digital display unit (440)) (see FIG. 5) that displays the amount of leakage current measured by the leakage current measuring unit, for example, by converting the leakage current signal into a digital value (A / D conversion).

[0075] Additionally, the leakage current recovery module (400) may further include a warning notification unit (450) (see FIG. 5) configured to provide a visual and / or auditory warning to an operator when the leakage current measuring unit detects that a leakage current has occurred, or when the measured value of the leakage current is at a preset threshold value even if a leakage current has occurred.

[0076] The above warning notification unit (450) is configured to consist of at least one of a warning light module and a speaker module, and may be configured to turn on the lamp of the warning light and / or activate the sound generation circuit of the speaker to sound a warning sound when a leakage current is measured by the leakage current measuring unit or when the measured value of the leakage current is a preset threshold value.

[0077] According to the electric shock protection distribution board of the present invention as described above, the present invention has the advantage of being able to actively recover all leakage currents generated in the distribution board and measure them in real time, thereby accurately detecting and managing even minute leakage currents that do not cause the leakage circuit breaker to operate, and safely recovering leakage currents by preventing short circuits in the internal circuit through a sealed or waterproof main body and a leakage current recovery component even when the load side, such as the distribution board and / or outlet, is submerged, thereby preventing or significantly reducing the risk of electric shock accidents and maintaining the normal functioning of the power system even in the event of submersion.

[0078] In addition, the present invention provides an early warning to the user through a notification function before the leakage current reaches a dangerous level, thereby enabling the user to recognize potential hazards in advance and take immediate action, thus preventing major electric shock and fire accidents. Furthermore, by providing accurate information through a notification module when leakage current occurs, it enables the rapid identification of the location and cause of the leakage current, which has the advantage of increasing the equipment operating rate by allowing efficient maintenance without unnecessary power interruption.

[0079] The embodiments described in this specification and the accompanying drawings are merely illustrative of a part of the technical concept included in the present invention. Accordingly, since the embodiments disclosed in this specification are intended to explain, not limit, the technical concept of the present invention, it is obvious that the scope of the technical concept of the present invention is not limited by these embodiments. All variations and specific embodiments that can be easily deduced by a person skilled in the art within the scope of the technical concept included in the specification and drawings of the present invention should be interpreted as being included within the scope of the rights of the present invention. Explanation of the symbols

[0081] 100: Distribution panel main body 200: Distribution panel function module 210: Wiring circuit breaker 220: Earth leakage circuit breaker 230: Electric shock protector 300: Grounding means for main body 400: Leakage current recovery module 410: Leakage current induction unit 411: Grounding busbar for leakage current 412: Insulator 420: Leakage current recovery circuit unit 421: Phase line connection 422: Neutral line connection 423: Grounding line connection 424: Recovery line 430: Notification unit 431: Switching unit 432-1, 432-2: LED 440: Display unit (Digital display unit) 450: Warning notification unit

Claims

Claim 1 delete Claim 2 A distribution board main body; a distribution board function module provided in the distribution board main body and comprising at least one of a wiring circuit breaker, a ground fault circuit breaker, and an electric shock protector; a grounding means for the main body configured to be electrically connected to the distribution board main body to ground the distribution board main body and comprising a grounding busbar of a conductive metal; and a leakage current recovery module provided in the distribution board main body and configured to recover leakage current generated from at least one of the distribution board and a load-side device connected to the distribution board to the neutral line of a power supply line; wherein the leakage current recovery module comprises a leakage current induction unit configured to electrically induce leakage current generated from at least one of the distribution board and the load-side device. The system includes a leakage current recovery circuit unit configured to recover the leakage current induced by the leakage current induction unit to the neutral line; wherein the leakage current induction unit includes a leakage current grounding busbar coupled to the main body of the distribution board through an insulator, with one side connected to a common ground line and the other side electrically connected to the neutral line; and the leakage current recovery circuit unit includes a phase line connection part connected to a phase line consisting of one phase or three phases; a neutral line connection part connected to the neutral line of the power supply line; a ground line connection part electrically connected to a ground line which is an external common ground wire; a recovery line connected to recover the leakage current generated from at least one of the distribution board and the load-side device to the neutral line connection part; and a notification unit configured to indicate whether the connection status between the neutral line and the recovery line is normal; and wherein the notification unit includes a switching part that performs a switching operation based on the connection status between the neutral line and the recovery line. and two LEDs that visually indicate whether the connection status is normal according to the switching operation of the switching unit;An electric shock protection distribution board comprising, wherein when the two LEDs are lit simultaneously, it indicates a state in which the neutral line and the return line are normally connected, and when only one of the two LEDs is lit, it indicates a state in which the neutral line and the return line are abnormally connected. Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 delete Claim 7 delete Claim 8 In paragraph 2, the electric shock protection distribution board is characterized by further comprising: a leakage current recovery module configured to measure leakage current; and a display unit that displays the amount of leakage current measured by the leakage current measuring unit. Claim 9 In claim 8, the electric shock protection distribution board is characterized in that the leakage current recovery module further includes a warning notification unit configured to provide a warning notification, either visual or auditory, based on the measurement result from the leakage current measuring unit. Claim 10 In claim 9, the warning notification unit is configured with at least one of a warning light module and a speaker module, and is characterized in that when a leakage current is measured by the leakage current measuring unit or when the measured value of the leakage current corresponds to a preset threshold value, the lamp of the warning light module is turned on or a warning sound is generated from the speaker module.

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