KR102325318B1 - Deterioration detection relay and a method for detecting deterioration thereof - Google Patents

Abstract

The present invention relates to a deterioration detection relay, which detects deterioration generated in a switch inside the relay to be checked from the outside, comprising: a switch elbow connector which connects a cable in distribution lines; a switch sensor which detects abnormal state by deterioration of the switch elbow connector; and a display unit which displays a state of the relay. The deterioration occurring in the relay is detected by a temperature and appearance detecting sensor and then is displayed to the outside, and therefore, a worker easily detect occurrence of the deterioration.

Description

DETERIORATION DETECTION RELAY AND A METHOD FOR DETECTING DETERIORATION THEREOF

The present invention relates to a deterioration detection relay, and more particularly, to a deterioration detection relay capable of detecting deterioration occurring in a switch and a transformer inside the relay and confirming it from the outside.

Recently, a ring main unit (RMU), a type of electronic device introduced for line branching, line division, and load protection on distribution lines is being used.

Such a switchgear is configured to include a load switchgear inside an insulating container filled with sulfur hexafluoride (SF6) gas, which is an insulating material, to open and close the load and further include a fuse module to protect the load side. can be

Korean Patent No. 10-148758 discloses a switchgear capable of protecting a load and a fuse module by tripping when heat is generated by an abnormal current or the like.

However, in the conventional switchgear, a user has to directly open the switchgear to measure whether heat is generated, so the probability of detecting a defect is different depending on the ability of the manpower, so there is a problem in measuring the defect.

In addition, the length of the elbow joint used for ground equipment such as switchgear or transformer is different for each manufacturer, so it is difficult to determine whether a defect has occurred.

Furthermore, there was a problem that the workers did not recognize the occurrence of a defect or had to inspect it through a thermal imaging camera because the internal state of the relay could not be recognized from the outside.

The present invention was created to improve the problems of the conventional relay as described above, and it is an object of the present invention to detect and display a defect due to deterioration of a ground device disposed therein to the outside.

In order to achieve the object as described above, the deterioration detection relay according to the present invention includes a relay box; and a switch for regulating the application of voltage. Including, the switch includes: a switch elbow connecting member for connecting a cable in the distribution line; and a switch sensor for detecting a state abnormality due to deterioration of the switch elbow connection material. may include.

The switch elbow connector may include: an elbow connector formed in a T-shape to connect the switch and the cable; a connection plug having an end inserted into one end of the elbow connector; a connection terminal connected to the other end of the elbow connector; may include.

The switch elbow connection material may include an insulating cap connected to the connection plug by covering it; may further include.

The switch sensor may be connected by being fitted on an outer circumferential surface of the elbow connector.

* The switch sensor may include an external shape detection sensor that is in direct contact with the outer circumferential surface of the elbow connector; Including, the outer shape detection sensor can sense the pressure applied when the elbow connector ideally expands.

The outer shape detection sensor may be formed in a horseshoe shape to prevent separation from the outer circumferential surface of the elbow connector and fitted into the elbow connector.

The outer shape sensor may include: a sensor string extending to correspond to a circumferential length of an outer circumferential surface of the elbow connector; a first sensor magnet coupled to one end of the sensor string; and

a second sensor magnet coupled to the other end of the sensor string; Including, the sensor string may be connected and fixed by a magnetic force between the first sensor magnet and the second sensor magnet around the outer circumferential surface of the elbow connector.

The external shape sensor may detect the occurrence of deterioration through the occurrence of a gap between the first sensor magnet and the second sensor magnet when the elbow connector ideally expands.

The switch sensor may include: a temperature sensor disposed to be in contact with an upper portion of the outer shape detection sensor; It further includes, and the temperature sensor may detect heat transferred from the elbow connector through the outer shape detection sensor.

The switch sensor may include: a temperature sensor disposed to be in contact with an upper portion of the outer shape detection sensor; It further includes, wherein the temperature sensor is formed and coupled to a horseshoe shape corresponding to the shape of the external shape detection sensor, it is possible to detect heat transferred from the elbow connector through the external shape detection sensor.

The switch sensor may include: a temperature sensor disposed to be connected to one side of the outer shape detection sensor; It further includes, and the temperature sensor may detect heat transferred from the elbow connector.

The switch sensor may include: a temperature sensor disposed in contact with the outside of the elbow connector; It further comprises, the temperature sensor, the sensor patch having an adhesiveness to the surface; and a temperature sensor cable that transmits a signal detected by the sensor patch. may include.

A deterioration detection relay according to the present invention includes: a control unit receiving a signal transmitted from the switch sensor; may further include.

The deterioration detection relay according to the present invention includes a display unit for displaying the state of the relay box; Further comprising, the display unit, the control unit may display the content of the signal received from the switch sensor.

The display unit may include: a pressure gauge board for displaying a pressure when a pressure higher than a standard is applied from the external detection sensor; may include.

The pressure gauge board may be formed of a lamp that is turned on when a pressure higher than a standard is applied.

The display unit may include a thermometer board for displaying the temperature sensed by the temperature sensor.

The thermometer board may display the temperature sensed by the temperature sensor in the form of a dial so that the operator can intuitively recognize the temperature.

The display unit, an external lamp disposed on the outside of the relay box; The external lamp may be turned on when the control unit determines that the switchgear is in a deteriorated state through the pressure and temperature sensing signals transmitted from the switchgear sensor.

A deterioration detection and display method according to the present invention includes: a connection abnormality generating step in which a connection abnormality occurs in a switchgear elbow joint; a switch elbow joint expansion step in which the switch elbow joint member expands due to the deterioration generated in the connection abnormality generation step; a state abnormality detection step in which the external shape sensor senses the pressure from the switch elbow joint member in the expansion step of the switch elbow joint member and sends a signal to the controller; a pressure gauge board lighting step of illuminating the pressure gauge board by determining that the switch elbow connection member has expanded when the control unit receives a pressure reduction signal in the abnormal state detection step; may include.

an external lamp lighting step of turning on an external lamp of a relay by determining that the switch elbow connection material has expanded when the control unit receives a pressure reduction signal in the abnormal state detection step; may include.

In the abnormal state detection step, when the distance between the end of the first sensor magnet and the second sensor magnet of the external detection sensor exceeds the input predetermined distance, it is determined that the switch elbow joint has expanded, and the external lamp of the relay an external lamp lighting step of turning on; may include.

A deterioration detection and display method according to the present invention includes: a connection abnormality generating step in which a connection abnormality occurs in a switchgear elbow joint; a heating step of a switch elbow connecting member in which the temperature of the switch elbow connecting member is increased due to the deterioration occurring in the step of generating the connection abnormality; a heating sensing step in which a temperature sensor detects heat transferred from the switch elbow connection member in the heating step of the switch elbow connection member and sends a signal to a control unit; a thermometer board manipulation step of manipulating the thermometer board by determining the temperature of the switch elbow connection member when the controller receives a temperature signal in the heating sensing step; may include.

an external lamp lighting step in which the control unit receives a temperature signal in the heating detection step and turns on an external lamp of the relay by determining that the switch elbow connection material is deteriorated when the temperature is higher than a predetermined temperature; may include.

The predetermined temperature may mean a case where the difference from the external temperature is 5° C. or more.

As described above, the deterioration detection relay according to the present invention detects deterioration occurring in the ground equipment such as an internal switchgear or a transformer through a temperature and external detection sensor and displays it on the outside, so that the operator can easily detect the deterioration. there is an effect

In addition, when the temperature and pressure input in advance through the control unit are exceeded, the mechanical failure is determined, thereby providing convenience in determining the failure of the ground equipment.

1 is a view for explaining the external appearance of a deterioration detection relay according to an embodiment of the present invention.
2 is a perspective view illustrating an internal structure of a deterioration detection relay according to an embodiment of the present invention.
3 is a front view for explaining the structure of an elbow connection member for a switch according to an embodiment of the present invention.
4 is a front view for explaining the coupling structure of the switch elbow connection member according to the embodiment of the present invention.
5 is a front view for explaining a state in which the switch elbow connection member according to the embodiment of the present invention is deformed due to deterioration.
6 is a perspective view for explaining the structure of a switch sensor according to an embodiment of the present invention.
7 is a coupling diagram illustrating a structure in which a switch sensor is coupled to a switch elbow connection member according to an embodiment of the present invention.
8 is a perspective view for explaining the structures of a pressure gauge board and a temperature gauge board disposed inside the deterioration detection relay according to an embodiment of the present invention.
9 to 11 are a perspective view, a combined view, and a partially enlarged view showing the structure of an external shape sensor according to another embodiment of the present invention.
12 is a perspective view showing the structure of a temperature sensor according to another embodiment of the present invention.
13 is a functional block diagram for explaining the configuration of a control unit of a deterioration detection relay according to an embodiment of the present invention.
14 is a flowchart for explaining a step of detecting and displaying a pressure in the degradation detection method according to an embodiment of the present invention.
15 is a flowchart for explaining a step of detecting and displaying a change in temperature in the deterioration detection method according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and should be construed to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, terms such as first, second, etc. may be used to describe various components, but the components may not be limited by the terms. The terms are only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

The term “and/or” includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but other components may exist in between. can be understood On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it may be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as "comprise" or "have" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and one or more other features It may be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary may be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, it is interpreted in an ideal or excessively formal meaning. it may not be

In addition, the following embodiments are provided to more completely explain to those with average knowledge in the art, and the shapes and sizes of elements in the drawings may be exaggerated for clearer description.

Hereinafter, the deterioration detection relay 1 according to the present invention will be described with reference to FIGS. 1 and 2 .

1 and 2, the deterioration detection relay 1 according to the present invention includes a relay box 100 forming an inner space.

The relay box 100 defines a space in which the internal configuration of the deterioration detection relay 1 can be arranged, and can prevent the internal configuration from being damaged by rainwater or dust by dividing the internal space from the outside.

The relay box 100 may be formed in a structure in which one side can be opened. According to this embodiment, it shows a structure that can be opened from both sides. In addition to the so-called two-door type that opens on both sides, it may be formed as a one-door type that opens on one side.

Referring to FIG. 1 , an external lamp 430 may be disposed on the outside of the relay box 100 . The external lamp 430 may be turned on when the controller 300, which will be described later, determines that the interior is in a deteriorated state. Through this, workers can know the internal state without opening the relay box 100 .

Referring to FIG. 2 , the switch 200 may be disposed in the inner space of the relay box 100 . The switch 200 may include one or more switch elbow connectors 210 and a corresponding number of switch sensors 220 . The number of the switch elbow connection members 210 may be freely changed according to a required environment. The structure of the switch elbow connection member 210 and the switch sensor 220 will be described later with reference to FIGS. 3 to 7 .

An instrument panel may be disposed inside the relay box 100 . The instrument panel may include a pressure gauge board 410 that displays the pressure sensed by the switch sensor 220 and a thermometer board 420 that displays the temperature sensed by the switch sensor 220 .

The display unit 400 is a configuration that numerically displays the internal state of the relay, and according to the present embodiment, may include a pressure gauge board 410 , a thermometer board 420 , and the above-described external lamp 430 . The configuration and function of the display unit 400 will be described later with reference to FIGS. 8 to 15 .

3 to 7 show the detailed configuration of the switch 200 and the coupling between the configurations.

3 and 4 , the switch elbow connection material 210 may include an elbow connector 211 , a connection plug 212 , an insulating cap 213 , and a connection terminal 214 .

The elbow connector 211 is used as a medium for facilitating detachment and detachment when connecting an extra-high voltage device such as a switchgear and a power cable in an underground distribution line. 212) and the insulating cap 213 are inserted, and the other end is formed in a T-shape having a space in which the connection terminal 214 of the cable can be inserted.

The elbow connector 211 may be formed of an insulating material such as rubber and silicone to prevent electric shock to workers.

The connection plug 212 may have a diameter smaller than the diameter of the receiving part so that one side can be inserted into the receiving part of the elbow connector 211, and the central part may be formed to have a longer diameter than the diameter of the receiving part. According to the present embodiment, the connection plug 212 may be coupled so that only a part thereof is accommodated in the elbow connector 211 .

The insulating cap 213 may be coupled to cover and cover the portion exposed to the outside of the connection plug 212 .

Referring to FIG. 5 , the elbow connector 211 may form a typically cylindrical upper portion.

However, when an abnormality occurs in the internal connection, deterioration may occur, and expansion may occur in the elbow connector 211 due to such deterioration.

5 shows a state in which the upper part of the elbow connector 211 is inflated to a certain height (h) or more. The external shape detection sensor 221 to be described later comes into contact with the upper part of the elbow connector 211 and receives pressure by expansion to sense it.

6 and 7 , the switchgear sensor 220 may include an outer shape detection sensor 221 , a temperature sensor 222 , and a sensor cable 223 .

The outer shape sensor 221 may be formed in a cylindrical shape at a predetermined angle or more, and may be formed in a horseshoe shape with one side open. The diameter of the outer shape sensor 221 may be formed to be larger than the diameter of the elbow connector 211 and smaller than the diameter of the insulating cap 213 to prevent separation from the upper part of the elbow connector 211 .

The temperature sensor 222 may be formed in a cylindrical shape at a predetermined angle or more, and may be formed in a horseshoe shape with one side open. The position of the temperature sensor 222 may be disposed so as to be connected to the upper side of the outer shape detection sensor 221 as in the embodiment of FIG. 6 . According to the present embodiment, the inner diameter of the temperature sensor 222 may be formed to be the same as the outer diameter of the outer detection sensor 221 .

However, the present invention is not necessarily limited thereto, and according to another embodiment, it may be disposed to be connected to one side of the outer shape detection sensor 221 and to be in contact with the upper side of the elbow connector 211 . In this case, the diameter of the temperature sensor 222 may be formed to be larger than the diameter of the elbow connector 211 and smaller than the diameter of the insulating cap 213 to prevent separation from the upper side of the elbow connector 211 .

In addition, according to another embodiment, the temperature sensor 222 may be disposed in parallel with each other without being connected to the outer shape detection sensor 221 .

The embodiment of FIG. 7 shows the switchgear sensor 220 to which the temperature sensor 222 is coupled to the upper side of the outer shape detection sensor 221 . Hereinafter, the present embodiment will be described for convenience.

Referring to FIG. 7 , the switch sensor 220 may be coupled to the upper portion of the elbow connector 211 . The external shape sensor 221 comes in contact with the elbow connector 211, and when the elbow connector 211 expands due to deterioration caused by abnormal connection inside the switch elbow connector 210, it can sense the pressure applied. .

The temperature sensor 222 may be disposed on the outer shape detection sensor 221 to detect heat transferred from the elbow connector 211 through the outer shape detection sensor 221 .

The switchgear sensor 220 may further include a sensor cable 223 connected to the outer shape detection sensor 221 and the temperature sensor 222 .

The sensor cable 223 may be connected to the control unit 300 to transmit a detection signal of a change in pressure and temperature. In this case, the control unit 300 may control the display unit 400 to display pressure and temperature changes. A detailed description of the control method will be described later.

8 shows the shape of the instrument panel on which the pressure gauge board 410 and the temperature gauge board 420 are disposed.

The pressure gauge board 410 may serve to display the pressure when a pressure higher than a standard is applied from the outer shape detection sensor 221 . The pressure above the standard is input to the memory 320 of the control unit 300 and may be changed in response to a material change or a shape change of the elbow connector 211 .

Referring to FIG. 8 , the pressure gauge board 410 may be formed of a litable lamp. According to the present embodiment, the pressure gauge board 410 may be turned on when a pressure greater than or equal to a standard is applied from the outer shape sensor 221 . Accordingly, the operator can intuitively recognize which switch elbow connection member 210 has deteriorated among the plurality of switch elbow connection members 210 .

The thermometer board 420 may serve to display the temperature sensed by the temperature sensor 222 . The temperature sensor 222 detects the heat transferred from the elbow connector 211 through the external detection sensor 221 and the temperature of the inner space of the relay box 100 , and transmits a signal to the control unit 300 . The controller 300 detects the signal and displays the temperature on the thermometer board 420 .

Referring to FIG. 8 , the thermometer board 420 may be formed to indicate the temperature sensed by the temperature sensor 222 in a dial format. According to this embodiment, the operator can intuitively recognize the temperature sensed by the temperature sensor 222 through the dial.

The embodiment of FIG. 8 shows a shape in which a plurality of holes through which the sensor cable 223 can be introduced are formed on one side of the instrument panel. In this case, the control unit 300 may be disposed inside the instrument panel. The controller 300 may control the pressure and temperature information received from the sensor cable 223 to be displayed on the pressure gauge board 410 and the temperature gauge board 420 .

9 to 12 show a switchgear sensor according to another embodiment of the present invention.

9 to 11 , the outer shape detection sensor 221 may include a first sensor magnet 221a, a second sensor magnet 221b, and a sensor string 221c.

In detail, the first sensor magnet 221a may be connected to one end of the sensor string 221c, and the second sensor magnet 221b may be connected to the other end of the sensor string 221c. The sensor string 221c may be connected and fixed by a magnetic force between the first sensor magnet 221a and the second sensor magnet 221b while being surrounded by the outer circumferential surface of the elbow connector 211 . (See Fig. 10)

Referring to the embodiment of FIG. 11 , in the external shape detection sensor 221 of this embodiment, the sensor string 221c is pulled by the expansion of the elbow connector 211, so that the first sensor magnet 221a and the second sensor magnet 221b) The occurrence of deterioration can be detected through the occurrence of the interval D of . In detail, when the interval D between the first sensor magnet 221a and the second sensor magnet 221b exceeds a predetermined interval D0 input to the control unit in advance (D>D0), it can be determined that deterioration has occurred. have.

12 , the temperature sensor 222 may include a sensor patch 222a and a temperature sensor cable 222b.

The sensor patch 222a may be formed to have adhesiveness on one surface. Therefore, according to the embodiment of FIG. 12 , the sensor patch 222a may sense the temperature by directly contacting the outer surface of the elbow connector 211 separately from the outer shape detection sensor 221 .

One side of the temperature sensor cable 222b may be connected to the sensor patch 222a. The other end may be connected to the sensor cable 223 or the controller 300 . Accordingly, the temperature signal sensed by the sensor patch 222a may be transmitted through the sensor cable 223 or directly to the controller 300 .

In addition, according to another embodiment of the present invention, the outer shape sensor 221 may be designed to detect vibrations that may occur according to the clearance generated by the deterioration of the elbow connector 211. (not shown)

Hereinafter, with reference to FIG. 13 or less, the deterioration detection and display method according to the present invention will be described with a focus on the control unit 300 .

As shown, the control unit 300 is electrically connected to the switch sensor 220 and the display unit 400 to generate a control signal for controlling them.

Meanwhile, the control unit 300 may be electrically connected to an input unit (not shown) to receive a user's control command and store it in the memory 320 . According to an embodiment of the present invention, the memory 320 may receive and store reference pressure and reference temperature information.

According to the configuration shown in FIG. 13 , the control unit 300 may further include a signal sensing unit 310 . The signal detector 310 may serve to receive a signal transmitted from the switch sensor 220 .

Referring to the embodiment of FIG. 14 , a connection error occurs in the cable, the connection plug 212 and the connection terminal 214 that are drawn into the switch elbow connection member 210 . (S100)

Excessive resistance occurs due to abnormal connection, and deterioration occurs due to induced current. (S101)

Heat is transferred to the switch elbow connecting member 210 due to the generated deterioration, and the switch elbow connecting member 210 having an increased temperature expands. (S101)

According to the present embodiment, in particular, the upper part of the elbow connector 211 may expand among the configuration of the switch elbow connection member 210 .

When the external shape detection sensor 221 disposed on the upper part of the elbow connector 211 detects the pressure due to expansion from the switch elbow connector 210, it transmits a pressure reduction signal. (S103)

When the control unit 300 receives the signal transmitted by the outer shape detection sensor 221 through the signal detection unit 310 , it is determined that the switch elbow connection member 210 is inflated. (S104)

The control unit 300 may determine that the switch elbow connection member 210 is inflated only when the signal transmitted by the external shape detection sensor 221 continues for more than a predetermined time input to the memory 320 . (not shown)

In this case, the predetermined time may be set in consideration of the material and thermal expansion coefficient of the switch elbow connection member 210 and the sensing unit pressure of the outer shape sensor 221 .

According to the embodiment in which the outer shape detection sensor 221 is configured to include a first sensor magnet 221a, a second sensor magnet 221b and a sensor string 221c (see FIGS. 9 to 11), the control unit 300 When the interval D between the first sensor magnet 221a and the second sensor magnet 221b exceeds the predetermined interval D0 input to the control unit in advance (D>D0), the switch elbow connection member 210 expands. can be judged as (not shown)

The control unit 300 turns on the pressure gauge board 410 when it is determined that the switch elbow connection member 210 is inflated. (S105)

In addition, if it is determined that the switch elbow connection member 210 has expanded, the control unit 300 determines that deterioration has occurred and turns on the external lamp 430 of the relay. (S106)

Referring to the embodiment of FIG. 15 , a connection error occurs in the cable, the connection plug 212 , and the connection terminal 214 that are drawn into the switch elbow connection member 210 . (S100)

Excessive resistance occurs due to abnormal connection, and deterioration occurs due to induced current. (S101)

Heat is transferred to the switch elbow connection member 210 due to the generated deterioration and is heated. (S111)

When the temperature sensor 222 disposed on the upper portion of the outer shape detection sensor 221 or the elbow connector 211 detects a temperature change of the switch elbow connection member 210 or the internal air of the relay, a temperature heating detection signal is transmitted. (S112)

When the control unit 300 receives the signal transmitted by the temperature sensor 222 through the signal detection unit 310 , it controls to change the internal temperature displayed on the thermometer board immediately. (S113)

The control unit 300 determines that the abnormal connection has occurred in the switch elbow connection member 210 only when the temperature change exceeds a predetermined reference value. In this case, the reference temperature means a temperature input to the memory 320 through an input unit (not shown).

The reference temperature may be input as a difference (α°C) with the external temperature (T0) measured through a thermometer (not shown) disposed on the outside of the relay.

When the temperature of the switch elbow connector 210 exceeds the external temperature T0 and the set temperature difference (α° C.), the controller 300 may determine that deterioration has occurred in the switch elbow joint 210 . (S114)

The control unit 300 turns on the external lamp 430 of the relay when it is determined that deterioration has occurred in the switch elbow connection member 210 . (S115)

When the temperature difference (α°C) is less than 5°C based on the switch elbow connection material 210 made of a conventional material, it can be determined within the normal temperature range. However, when the temperature difference (α°C) is 5°C to 10°C, it can be determined that the inspection is necessary. However, the control unit 300 may be set not to light the external lamp 430 even when the temperature difference (α°C) is 5°C to 10°C.

When the temperature difference (α°C) is 10° C. or more based on the switch elbow joint 210 made of a conventional material, deterioration occurs in the switch elbow joint 210 and it can be determined as a situation requiring replacement of parts. Accordingly, the controller 300 controls the external lamp 430 to turn on when the temperature difference (α°C) is 10°C or more.

14 and 15 , in the end step of this embodiment, when deterioration of the inside of the relay 1 or the switch elbow connection material 210 is sensed, the external lamp is turned on, and the operator immediately opens the relay 1 It means a step of recognizing the occurrence of deterioration. Afterwards, the operator can inspect the relay (1).

As such, those skilled in the art to which the present invention pertains will understand that the above-described technical configuration of the present invention may be implemented in other specific forms without changing the technical spirit or essential characteristics of the present invention.

Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the foregoing detailed description, and the meaning and scope of the claims And all changes or modifications derived from the equivalent concept should be construed as being included in the scope of the present invention.

1: Deterioration detection relay
100: relay box
200: switch
210: switch elbow connection material
211: elbow connector
220: switch sensor
221: appearance detection sensor
222: temperature sensor
300: control unit
400: display
410: pressure gauge board
420: thermometer board
430: external lamp

Claims (1)

relay box; and
a switch that regulates the application of voltage;
including,
The opener,
a switch elbow connector for connecting cables in distribution lines; and
a switch sensor for detecting a state abnormality due to deterioration of the switch elbow connection material;
including,
The switch elbow connection material,
an elbow connector formed in a T-shape to connect a switch and a cable;
a connection plug having an end inserted into one end of the elbow connector; and
a connection terminal connected to the other end of the elbow connector;
including,
The switch sensor is
It is connected to the outer circumferential surface of the elbow connector,
The switch sensor is
an external shape detection sensor in direct contact with the outer circumferential surface of the elbow connector; and
a temperature sensor disposed to be connected to one side of the outer shape detection sensor;
further comprising,
The outer shape sensor is
Detects the abnormal state of the elbow connector,
The temperature sensor is
Deterioration detection relay, characterized in that for sensing the heat transferred from the elbow connector.

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