KR102104387B1 - Wire breakaway prevention device, safety system for distribution board, distribution board and distribution board Power connection method - Google Patents

Abstract

The problem to be solved by the present invention is to solve the problems of the conventional cable support technology as described above. The present invention provides a wire separation prevention device which can prevent unintentional separation due to an external force without damaging a wire sheath. According to an embodiment of the present invention, the wire separation prevention device comprises: a first tube capable of accommodating a wire; and a support means provided on an inner circumferential surface of the first tube. The support means is provided in a projection form which is inclined by a predetermined angle from an inlet portion to an outlet portion of the first tube, and the wire is inserted so that the support means and the wire accommodated inside the first tube are in contact with each other to support the wire not to be separated in a direction of the inlet portion.

Description

Wire breakaway prevention device, safety system for distribution board, distribution board and distribution board Power connection method

The present invention relates to a wire separation prevention device, a safety system for a distribution panel provided with the same, and a method for connecting power to the distribution panel, including a wire separation prevention device, and more specifically, the wire of an electric wire caused by an external force such as an earthquake. It relates to a distribution panel that prevents unintentional detachment and structurally / systemically prevents accidents such as short circuit even if detached.

In general, when an earthquake occurs, the magnitude of the seismic force affecting the building is different depending on the structural characteristics such as the height, shape, or material of the building, and the earthquake is greater than that of advanced equipment or distribution facilities installed on the floor of the building. It can affect.

Seismic resistance as a seismic countermeasure in fields where industrial / information processing control equipment, OA equipment, and related ancillary facilities require online / real-time processing systems, particularly in areas of high publicity such as electric power, nuclear power, water treatment, aviation, railroad, etc. The demand for is increasing.

In addition, in normal times when there is no earthquake, mechanical vibration occurs due to vibration of the floor or electromagnetic force. In this case, vibration is transmitted to the telecommunication device enclosure or the switchgear enclosure itself, and the expensive price is mounted inside the telecommunication equipment or switchgear. Various devices are damaged.

The structure for protecting electric wires against earthquakes in the distribution panel has been developed in various forms and types according to the current use, and there is a form disclosed in Korean Patent Registration No. 10-0655135 as a prior art.

"The construction method of the electrical switchboard" in the above patent document is a main circuit breaker and a circuit breaker, and various circuit breakers and relays such as wiring breakers are installed and connected to the concrete wall of the building. In the construction method of the electric switchboard to be installed, the front panel is opened and the electric switchboard box having coupling holes formed on both side and bottom surfaces is fixed to the formwork, the spring case is coupled to the coupling hole, and concrete is poured and cured. After the electric switchboard box and the spring case are embedded in the concrete, the spring is coupled to the spring case through each of the coupling holes, and the electric switchboard relatively smaller than the electric switchboard box is placed in the electric switchboard box, and corresponds to each of the coupling holes Side and bottom of the electric switchboard A damper is coupled and fixed to the surface part to be connected to the spring, the damper is a damper case fixed to an electric switchboard, oil accommodated in the damper case, slidingly moved to the damper case, a piston having a hole through which the oil passes, and one end It consists of a piston rod connected to the piston and the other end contacting the spring.

In the prior art as described above, it is possible to minimize the external force applied to the cable in the event of an earthquake, but it is difficult to maintain and install due to the complexity of the structure, and to directly protect the electric wire when an external force is applied in the opposite direction from the wire fastening part. There are difficulties.

The problem to be solved by the present invention is to solve the problems of the conventional cable support technology as described above, to provide a wire departure prevention device that can prevent unintentional detachment due to external force without damaging the wire sheath. Is to do.

The present invention, in order to solve the problems of the conventional cable support technology, in the wire separation prevention device 40, the first tube (1) that can accommodate the wire (C); It includes a support means (2) provided on the inner circumferential surface of the first tube (1); The support means 2 is provided in the form of flesh inclined by a predetermined angle from the inlet portion 101 of the first tube 1 to the outlet portion 102, accommodated inside the first tube 1 The wire C is inserted so that the wire C and the support means 2 are in contact with each other, and the wire C is prevented from being removed in the direction of the inlet 101, the wire separation preventing device 40 Provides

In addition, a second tube 3 is provided outside the first tube 1 to accommodate the first tube 1; One end of the spring 31 is coupled to the inlet portion 101 side of the space between the outer side of the first tube 1 and the inner side of the second tube 3; A tube closing means 32 is coupled to the other end of the spring 31; When the electric wire (C) penetrates through the first tube (1) and the end of the electric wire (C) is located at the rear end of the outlet portion (102) of the first tube (1), the tube closing means by the circumferential surface of the electric wire (C) When the 32 is opened and retracted toward the inlet portion 101, and the end of the electric wire C is located at the front end of the first tube 1 and outlet 102, the tube is closed by the elastic force of the spring 31 The means 32 may be configured to protrude out of the outlet portion 102 to block contact between different wires C.

In addition, a waterproofing means is provided between the spring 31 and the tube closing means 32; It may be configured to block the intrusion of water into the space between the outer side of the first tube (1) and the inner side of the second tube (3).

In addition, in the safety system (S) for a distribution panel provided with the wire departure prevention device 40 as described above, the wire departure prevention unit 4 including a plurality of wire departure prevention device 40; A relay 6 coupled to one side of the wire departure prevention portion 4 in the direction of the outlet portion 102 of the wire departure prevention apparatus 40; Between the wire separation preventing portion 4 and the relay 6, a predetermined elastic body (5) and; A deformation detection sensor for measuring a position change between the wire departure prevention part 4 and the relay 6 is included; Provided is a safety system (S) for a power distribution board that cuts off power to the power distribution panel when a change of a predetermined value or more is detected by the deformation detection sensor.

In addition, an overcurrent circuit breaker or a switchgear circuit breaker (7, Molded Case Circuit Breaker, MCCB or No Fuse Breaker, NFB) is connected to the rear end of the relay 6, and a short circuit breaker ( 8) can be configured to be connected.

And, it provides a distribution panel equipped with a wire separation prevention device or a safety system for a distribution panel as described above.

In addition, in the method of connecting the power distribution panel to connect the power supply line (C), including the wire separation prevention device 40 as described above, from the first tube (1) inlet portion 101 to the outlet portion (102) direction A guide pipe input step of introducing a guide pipe having a predetermined rigidity; After the guide tube input step, the wire introduction step for introducing the wire (C) into the guide tube; After the wire entry step, the guide tube removal step of removing the guide tube to the rear end of the outlet portion 102; After the step of removing the guide tube, comprising a power fastening step of fastening the electric wire (C) to the power terminal; Provides a method for connecting power to the distribution panel.

According to an embodiment of the present invention, it is possible to protect the wire from being detached (removed) from the power connection portion from a predetermined external force such as an earthquake without damaging the wire covering.

In addition, even if the electric wire is large and the electric wire is detached from the power connection part, the electric wire can be prevented from contacting with other electric wires nearby to prevent short circuit.

In addition, when the electric wire is separated from the power connection unit, the electric power on the primary side can be cut off by detecting the electric wire departure so as to protect the distribution panel.

In addition, even if all of the above-described safety devices do not work, an overcurrent circuit breaker or a switchboard circuit breaker may be provided in the primary power connection to protect the distribution panel, thereby systematically protecting the distribution panel.

In addition, a short circuit breaker is provided at the rear end of the overcurrent circuit breaker or the switchboard circuit breaker, and thus it is possible to prevent accidents caused by external forces such as earthquakes.

In addition, by forming a waterproof structure so that water does not flow from the wire inlet, it is possible to prevent an accident such as equipment failure or fire due to rainwater in the rain.

1 is a perspective view of a wire separation prevention apparatus according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of the wire departure prevention device according to an embodiment of the present invention.
3 is a cross-sectional view (III) of a wire departure prevention apparatus according to an embodiment of the present invention.
4 and 5 are cross-sectional views (IV) of an apparatus for preventing wire departure according to an embodiment of the present invention.
6 is a control flowchart of a distribution panel according to an embodiment of the present invention.
7 is a schematic view of a distribution panel provided with a wire departure prevention device according to an embodiment of the present invention.
8 is a cross-sectional view showing a coupling structure of an electric wire, a supporting means, and a first tube of an electric wire separation prevention apparatus according to an embodiment of the present invention.

Hereinafter, various embodiments of this document will be described with reference to the accompanying drawings. However, this is not intended to limit the techniques described in this document to specific embodiments, and should be understood to include various modifications, equivalents, and / or alternatives of embodiments of the document. . In connection with the description of the drawings, similar reference numerals may be used for similar components.

In this document, expressions such as "have," "can have," "includes," or "can contain," the existence of a corresponding feature (eg, a component such as a numerical value, function, operation, or part) And does not exclude the presence of additional features.

In this document, expressions such as “A or B,” “at least one of A or / and B,” or “one or more of A or / and B”, etc. may include all possible combinations of the items listed together. . For example, “A or B,” “at least one of A and B,” or “at least one of A or B,” (1) includes at least one A, (2) includes at least one B, Or (3) all cases including both at least one A and at least one B.

Expressions such as "first," "second," "first," or "second," as used herein may modify various components, regardless of order and / or importance, and denote one component. It is used to distinguish from other components, but does not limit the components. For example, the first user device and the second user device may indicate different user devices regardless of order or importance. For example, the first component may be referred to as a second component without departing from the scope of rights described in this document, and similarly, the second component may also be referred to as a first component.

Some components (eg, the first component) are "operatively or communicatively coupled with / to" other components (eg, the second component) or "accessed" When referred to as "connected to", it should be understood that any of the above components may be directly connected to the other components or may be connected through other components (eg, a third component). On the other hand, when it is mentioned that one component (eg, the first component) is “directly connected” or “directly connected” to another component (eg, the second component), the component and the component are It can be understood that there are no other components (eg, the third component) between the other components.

As used herein, the expression "configured to" is, depending on the context, for example, "having the capacity to" , "" Designed to, "" adapted to, "" made to, "or" capable of "can be used interchangeably. The term "configured (or set) to" may not necessarily mean only "specifically designed to" in hardware. Instead, in some situations, the expression "a device configured to" may mean that the device "can" with other devices or parts. For example, the phrase “processors configured (or set) to perform A, B, and C” means by executing a dedicated processor (eg, an embedded processor) to perform the operation, or one or more software programs stored in the memory device. , It may mean a general-purpose processor (eg, CPU or application processor) capable of performing the corresponding operations.

The terms used in this document are only used to describe specific embodiments, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person skilled in the art described in this document. Among the terms used in this document, terms defined in the general dictionary may be interpreted as having the same or similar meaning in the context of the related art, and are ideally or excessively formal, unless explicitly defined in this document. Is not interpreted as In some cases, terms defined in this document cannot be interpreted to exclude embodiments of the document.

Various modifications can be made by those skilled in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims of the present invention. It should not be understood individually from the perspective.

According to an embodiment of the present invention, in the wire separation prevention device 40, the first tube (1) that can accommodate the wire (C); It includes a support means (2) provided on the inner circumferential surface of the first tube (1); The support means 2 is provided in the form of flesh inclined by a predetermined angle from the inlet portion 101 of the first tube 1 to the outlet portion 102, accommodated inside the first tube 1 The wire C is inserted so that the wire C and the support means 2 are in contact with each other, and the wire C is prevented from being removed in the direction of the inlet 101, the wire separation preventing device 40 Provides

In the above description, the electric wire C is basically an incoming power line of the distribution panel S (housing / household incoming electric power line), and in addition, a uniform configuration such as a power line, a cable, a wiring, a wire, an electric cable, an electric line, a cord, and a cord It may be a term that includes an element.

The support means 2 may be made of a material having a predetermined elastic force. Springs, soles, and protrusions (silicon / rubber / plastic (cable tie, ABS material, etc.)) can be used.

It is also possible to use a material having a predetermined rigidity, but in this case, when an external force acts on the electric wire C and the supporting means 2 catches the electric wire C, the covering of the electric wire C is applied to the supporting means 2 There is a risk of being damaged by.

Accordingly, in the embodiment of the present invention, the electric wire C is provided in the direction of preventing the electric wire C from being removed when the external force acts in the direction in which the electric wire C is detached by having the support means 2 having a predetermined elastic force. A force is applied to the circumferential surface of the body, but when the external force is very large, the supporting means 2 is deformed to prevent damage to the electric wire C.

4 shows a state in which the electric wire C is normally inserted, and FIG. 5 shows a situation in which the electric wire C is removed by external force. The support means (2) is deformed (brush, protrusions, etc. are bent or springs are compressed, etc.) to hold the outer circumferential surface of the wire C, but not to be damaged.

It is preferable that the circumference of the inner circumferential surface having the end where the supporting means 2 comes into contact with the electric wire C is formed smaller than a circumference of the electric wire C by a predetermined dimension. More specifically, as shown in FIG. 8, it may be formed in a dimension range of x> y> z, and preferably formed in a dimension of zy = (xy) * α (α is 30% to 70%). Do.

When the α value is 30% or less, the pressure applied by the support means 2 to the electric wire C may be too weak, and the electric wire C may be released even when the external force is small. On the other hand, when the α value is 80% or more, the space for the support means 2 to be deformed is insufficient, and there is a risk that the electric wire C is damaged by the support means 2 when a large external force is applied.

The support means 2 is provided at a predetermined interval along the inner circumferential surface of the first tube 1, the plurality of flesh is provided in multiple stages along the axial direction of the first tube 1, the support means Each stage of (2) is provided to be twisted at a predetermined angle around the axial direction of the first tube (1) may be formed in a spiral structure.

It is preferable that the support means 2 are provided with 5 or more radially (meaning 5 or more at one end) along the inner circumferential surface of the first tube 1. 3 shows an embodiment in which eight supporting means 2 are radially provided. When the support means (2) is provided in such a way as to completely fill the inner circumferential surface of the first tube (1), since each support means (2) interferes with each other, the force holding the electric wire (C) can be reduced, so each support means (2) may be provided radially to have a predetermined distance from each other. The maximum number of supporting means 2 provided at one end may vary depending on the width of the supporting means 2.

Since the support means 2 in the form of a brush is very small, it is possible to have tens to hundreds of pieces. On the other hand, when the width (m) of the support means (2) in the form of a protrusion is about 1 / n (m = l / n) of the circumference (l) of the inner circumference of the first tube (1), n / 3 per step It is preferably provided to about n / 1.5. At this time, the ratio of the support means 2 occupying the circumference l of the inner circumferential surface of the first tube 1 is m * (n / 1.5 or n / 3) = (l / n) * (n / 1.5 or n / 3 ) = (l / 1.5 or l / 3), and the remaining length (0.5 * l / 1.5 or 2 * l / 3) may be a space separating each support means 2. The spacing between the support means 2 may be formed as (l / 1.5 or 2 * l / 3) / n.

When the number of support means 2 provided in one end is excessive When the number of support means 2 provided in one end decreases, the efficiency of supporting the electric wire C decreases due to mutual interference of the support means 2 Since the area where the supporting means 2 comes into contact with the electric wire C decreases, the supporting efficiency of the electric wire C decreases, so it is preferable to provide the supporting means 2 in the above range.

It is preferable that a plurality of stages (or rows) of the support means 2 provided as described above is provided in five or more stages. 4 shows an embodiment in which the supporting means 2 is composed of 10 stages. When the number of stages of the supporting means 2 is insufficient, the force supporting the electric wire C may be insufficient, and thus the removal of the electric wire C by external force may easily occur, so the number of the supporting means 2 provided at one stage, Considering the dimensions (x, y, z, l, m, n) of the first tube (1) / supporting means (2) / wire (C), an appropriate number of stages may be provided. As for the number of stages of the supporting means 2, the minimum value is meaningful as described above, and the maximum value may be appropriately changed according to the design specification.

In FIG. 3, only one end of the support means 2 is shown to facilitate the understanding of the structure, but the support means 2 may be provided by being twisted by a predetermined angle for each end to be formed in a spiral shape. In more detail, the second stage support means 2 may be located at the back of the margin of the first stage support means 2, and the second stage support means 2 may be formed at the rear portion of the first stage support means 2. Meaning.

As described above, the plurality of numbers, the plurality of stages, and the support means 2 formed in a spiral shape have a predetermined waterproof function. Normally, the distribution panel is formed in a structure that does not invade water, but in order to draw the electric wire C into the distribution panel S, it is inevitable that a predetermined hole is formed in the outer case of the distribution panel S, and through this hole, water is prevented. In case of inflow, an accident such as a device failure or fire may occur due to a short circuit. Wire detachment prevention device 40 according to an embodiment of the present invention, even in rainy weather, the support means 2 of the various stages are in close contact with the wire C while having a predetermined pressure, so that moisture such as rain water does not flow in. Can be prevented.

In addition, a second tube 3 is provided outside the first tube 1 to accommodate the first tube 1; One end of the spring 31 is coupled to the inlet portion 101 side of the space between the outer side of the first tube 1 and the inner side of the second tube 3; A tube closing means 32 is coupled to the other end of the spring 31; When the electric wire (C) penetrates through the first tube (1) and the end of the electric wire (C) is located at the rear end of the outlet portion (102) of the first tube (1), the tube closing means by the circumferential surface of the electric wire (C) When the 32 is opened and retracted toward the inlet portion 101, and the end of the electric wire C is located at the front end of the first tube 1 and outlet 102, the tube is closed by the elastic force of the spring 31 The means 32 may be configured to protrude out of the outlet portion 102 to block contact between different wires C.

2 shows an embodiment of the tube closing means (32). The first tube (1) outer circumferential surface and the second tube (3) inner circumferential surface area has the same cross-section and a predetermined thickness of the waterproof means coupling portion 33 is connected to the spring 31, the waterproof means coupling portion 33 of Two or more tube closing means 32 may be coupled to the opposite side of the spring 31 connection. FIG. 2 shows a shape in which two tube closing means 32 are combined, and if necessary, another pair of tube closing means 32 may be provided in the margin space of the waterproof means coupling part 33 shown in the drawing. There will be. In this case, the length of the tube closing means 32 is preferably shorter or longer so as not to interfere with the tube closing means 32 shown in the drawings.

In addition, a waterproofing means is provided between the spring 31 and the tube closing means 32; It may be configured to block the intrusion of water into the space between the outer side of the first tube (1) and the inner side of the second tube (3).

In FIG. 4, the space between the inlet portions of the first tube 1 and the second tube 3 is shown in a closed shape, but the space between the first tube 1 and the second tube 3 is also opened. Can be configured. In this case, since water may be introduced from the outside, the waterproofing means coupling part 33 prevents water from entering the device such as the distribution panel S through the space between the first tube 1 and the second tube 3 Equipped with a waterproof means such as rubber / silicone / teflon packing to block the inflow of water into the device. Since the inside of the first tube 1 is provided with a predetermined waterproofing capability by the supporting means 2 as described above, the inflow of water from the inlet of the electric wire C is completely (waterproof according to an embodiment of the present invention such as flooding). It may be blocked, except when it is outside the performance limits.

In addition, in the safety system (S) for a distribution panel provided with the wire departure prevention device 40 as described above, the wire departure prevention unit 4 including a plurality of wire departure prevention device 40; A relay 6 coupled to one side of the wire departure prevention portion 4 in the direction of the outlet portion 102 of the wire departure prevention apparatus 40; Between the wire separation preventing portion 4 and the relay 6, a predetermined elastic body (5) and; A deformation detection sensor for measuring a position change between the wire departure prevention part 4 and the relay 6 is included; Provided is a safety system (S) for a power distribution board that cuts off power to the power distribution panel when a change of a predetermined value or more is detected by the deformation detection sensor.

In the above description, the distribution panel may be a term including an equivalent device such as a switchboard, a switchboard, a switchboard, a cabinet panel, and a distribution board.

The relay 6 is preferably composed of a solid state relay (SSR).

The elastic body 5 may be a spring 31 or a rubber pad. It is provided so as to absorb the shock between the wire departure prevention unit 4 and the contactless relay 6, and to be deformed by a predetermined dimension when an external force such as an earthquake occurs.

The operation of the deformation detection sensor (tilt sensor or seismic sensor, etc.) attached to the wire detachment prevention unit 4 causes the electric wire C to exit from the electric wire departure prevention device 40 by an unintended external force such as an earthquake. ) Is pulled in the direction of the inlet part 101, the deformation (the slope between the wire departure prevention part 4 and the non-contact relay 6 is measured above a predetermined set value) is detected, or an earthquake occurs through an acceleration sensor, etc. When it detects itself, it can operate on the principle of cutting off the power on the primary side by sending a signal to the contactless relay (6).

In addition, an overcurrent circuit breaker or a switchgear circuit breaker (7, Molded Case Circuit Breaker, MCCB or No Fuse Breaker, NFB) is connected to the rear end of the relay 6, and a short circuit breaker ( 8) can be configured to be connected.

According to an embodiment of the present invention, "prevent wire breakage-cut off contact between wires C when wires C are detached-operation of contactless relay 6 according to wire C breakaway or earthquake detection-overcurrent It is equipped with a safety system of at least 5 levels, such as the operation of a circuit breaker or a switchboard circuit breaker-the operation of a leakage circuit breaker.

In addition to this, in order to prevent a fire due to failure to prevent the wire C from leaving the distribution panel, the distribution panel may further include a fire extinguishing polymer-based fire extinguishing tool. Fire-extinguishing polymer-based fire extinguishing equipment is a range that can be easily carried out by a person skilled in the art, and will not be described in more detail. The embodiment is described in Korean Patent Registration No. 10-1887396.

In addition, in the method of connecting the power distribution panel to connect the power supply line (C), including the wire separation prevention device 40 as described above, from the first tube (1) inlet portion 101 to the outlet portion (102) direction A guide pipe input step of introducing a guide pipe having a predetermined rigidity; After the guide tube input step, the wire introduction step for introducing the wire (C) into the guide tube; After the wire entry step, the guide tube removal step of removing the guide tube to the rear end of the outlet portion 102; After the step of removing the guide tube, comprising a power fastening step of fastening the electric wire (C) to the power terminal; Provides a method for connecting power to the distribution panel.

The guide tube is made of a material having a predetermined rigidity, such as a PVC pipe, and the guide tube is easily inserted into the first tube 1 while pushing the support means 2, but the electric wire is caused by friction inside the guide tube. It is preferably formed to have a predetermined inner diameter so that (C) can be inserted without bending. After installing the electric wire (C) through the guide pipe at the time of installation work of the distribution panel power wire (C), when the guide pipe is pulled out toward the outlet portion 102, the supporting means (2) supports the outer peripheral surface of the electric wire (C) The wire C is fixed so as not to be removed.

In addition, the distribution panel according to an embodiment of the present invention may further include a temperature sensor, an earth leakage detection sensor, a water level sensor, and the like. As shown in the flow chart according to FIG. 6, a system capable of turning the relay 6 ON / OFF (SSR OFF / ON) in various situations such as earthquake, overheating, flooding, and earth leakage is provided.

1: 1st tube 4: Wire separation prevention part
101: entrance 40: wire separation prevention device
102: outlet 5: elastic body
2: Support means 6: Relay
3: 2nd tube 7: Overcurrent circuit breaker, switchboard circuit breaker
31: spring 8: earth leakage breaker
32: tube closing means C: electric wire, power wire
33: waterproof means coupling part S: distribution panel safety system, distribution panel
x: inner diameter of the first tube y: outer diameter of the wire
z: diameter of inner circumferential surface of supporting means

Claims (8)

In the wire departure prevention device,
A first tube capable of receiving an electric wire;
It includes a support means provided on the inner circumferential surface of the first tube;
The support means is provided in the form of a flesh inclined by a predetermined angle from the inlet to the outlet of the first tube,
An electric wire is inserted so that the electric wire accommodated inside the first tube and the supporting means are in contact, so that the electric wire is not removed in the direction of the inlet;
A second tube is provided outside the first tube to receive the first tube;
One end of the spring is coupled to the inlet side of the space between the outside of the first tube and the inside of the second tube;
A tube closing means is coupled to the other end of the spring;
When the wire passes through the first tube and the end of the wire is located at the rear end of the outlet of the first tube, the tube closing means is opened by the circumferential surface of the wire and retracts toward the inlet,
When the end of the electric wire is located in the front end of the first tube outlet portion, the tube closing means protrudes out of the outlet portion by the elastic force of the spring, characterized in that to block contact between different wires, wire separation prevention device delete The method according to claim 1,
Waterproof means is provided between the spring and the tube closing means;
A device for preventing wire breakage that blocks intrusion of water into the space between the outside of the first tube and the inside of the second tube The method according to claim 3,
The support means are provided at predetermined intervals along the inner circumferential surface of the first tube,
The plurality of flesh is provided in multiple stages along the axial direction of the first tube,
Each end of the support means is provided to be twisted at a predetermined angle around the axial direction of the first tube, characterized in that formed in a spiral structure, wire separation prevention device In the safety system for the distribution panel provided with a wire separation prevention device of claim 3,
Wire departure prevention unit including a plurality of wire departure prevention device;
A relay coupled to one side of the wire departure prevention portion in the direction of the outlet portion of the wire departure prevention apparatus;
Between the wire departure prevention portion and the relay,
A predetermined elastic body;
A deformation detection sensor for measuring a position change between the wire departure prevention part and the relay is included;
When the deformation detection sensor detects a change over a predetermined value, cut off the power to the distribution panel,
An overcurrent circuit breaker or a switchboard circuit breaker is connected to the rear end of the relay,
A safety system for a distribution panel, characterized in that a short circuit breaker is connected to the rear end of the overcurrent circuit breaker or the switchboard circuit breaker. A distribution panel equipped with an apparatus for preventing wire detachment of claim 3 A distribution panel equipped with a safety system for a distribution panel of claim 5 In the method of connecting the power distribution panel to connect the power line, including the wire separation prevention device of claim 3,
A guide tube input step of inserting a guide tube having a predetermined rigidity from the first tube inlet to the outlet;
After the step of introducing the guide pipe, the wire introduction step of drawing the wire into the guide pipe;
After the wire entry step, the guide tube removal step of removing the guide tube to the rear end of the outlet;
After the step of removing the guide tube, comprising a power fastening step of fastening the electric wire to the power terminal; How to connect power to the distribution panel

Images