JP5399179B2 - Cable connection status switching device - Google Patents

Description

  The present invention relates to a cable connection state switching device capable of switching between a state in which a base end portion of a connection cable connected to a distribution line is connected to a power application device and a state in which the connection cable is connected to a ground conductor.

  Conventionally, when a ground fault or the like occurs in a distribution line, it is required to quickly repair the accident point (accident occurrence point) and restore the power supply in the distribution line. For this purpose, it is necessary to quickly identify (search) the accident point and to perform a power failure at the accident occurrence section including the accident point (on both sides of the accident point) to promptly repair the accident point.

  Here, as an accident point exploration device that identifies an accident point in a distribution line, a power distribution device that identifies a fault point by applying a DC voltage to a predetermined location of the distribution line is known (see, for example, Patent Document 1). ).

  The power distribution device disclosed in Patent Literature 1 applies a DC voltage to a distribution line in an accident occurrence section, and searches for the presence or absence of a DC current flowing through the distribution line by applying the DC voltage. That is, the ground fault current (DC current) due to the ground fault flows between the application point of the DC voltage on the distribution line and the accident point, but does not flow at other points on the distribution line. By searching for the presence or absence of a ground fault current flowing through such a distribution line, the operator can specify the accident point.

JP-A-2-17468

By the way, after the accident occurrence location is specified by the power distribution device, the worker performs a repair work of the distribution line in the accident occurrence section. At that time, since the distribution line is at a high voltage, in order to improve safety, the work is usually performed with the fault occurrence section grounded.
For this reason, the worker has to perform work for attaching ground connection cables on both sides of the accident point in the distribution line, in addition to the connection cable of the power distribution device. Such attachment and removal work of the connection cable has many work processes and is very troublesome for the operator.
Further, as described above, the repair of the accident point is performed by causing a power failure in the accident occurrence section. Therefore, it is desired to quickly restore the power distribution line and restore power supply at an early stage. Under such circumstances, the attachment and detachment work of the connection cable has become one of the factors that lengthen the work time, and it has not been possible to restore power supply at an early stage.

  An object of the present invention is to provide a cable connection state switching device capable of reducing a part of work processes from identification of a distribution line in which a ground fault or the like has occurred to repair, and capable of early restoration of power supply. And

The present invention relates to a cable connecting portion that connects a proximal end portion of a connection cable that is detachably attached to a distribution line and that can be connected to the distribution line, and a voltage applying device that can apply a direct current to the connection cable. A connecting section for connecting a grounding conductor, a grounding conductor connecting section for connecting a base end of the grounded first grounding conductor, a DC connection to the connecting cable by connecting the cable connecting section and the charging apparatus connecting section. A changeover switch unit capable of switching between an applicable state in which a current can be applied and a grounding state in which the distribution line can be grounded via the connection cable by connecting the cable connection unit and the ground conductor connection unit. And a cable connection state switching device.

  The changeover switch portion is connected to the cable connection portion, and is connected to an operation lever portion movable in a first direction and a second direction, and to the power-applying device connection portion, and the operation lever portion is connected to the first connection portion. When the actuator is moved in one direction, the operation lever portion and the power-applying device connecting portion are electrically connected, and the electrical connection state between the operation lever portion and the power-applying device connecting portion is maintained. 1 connection portion and the ground conductor connection portion, and when the operation lever portion is moved in the second direction, the operation lever portion and the ground conductor connection portion are electrically connected, and the operation It is preferable to include a second connection portion that maintains an electrical connection state between the lever portion and the ground conductor connection portion.

  Further, the operation lever portion is formed in a substantially plate shape and is connected in a state of being held so as to be sandwiched between the first connection portions when the operation lever portion is moved in the first direction. A second terminal formed in a substantially plate shape and connected in a state of being held so as to be sandwiched between the second connection portions when the operation lever portion is moved in the second direction. And a terminal portion.

  Further, the power application device includes a ground terminal portion connectable to a grounded second ground conductor, and the changeover switch portion is connected to the ground terminal portion, and the second connection portion in the applyable state. It is preferable to further include a third connection portion that can be electrically connected to the first connection portion.

  The third connection portion includes a ground connection portion connected to the ground terminal portion, and a conductor connection portion connected to the second connection portion, and the operation lever portion is in the first direction. And when the first terminal portion and the first connection portion are electrically connected, a third terminal portion is further provided for electrically connecting the ground connection portion and the conductor connection portion. It is preferable.

  According to the present invention, it is possible to provide a cable connection state switching device capable of reducing a part of the work process from the identification of a distribution line in which a ground fault or the like has occurred to repair, and capable of early restoration of power supply. Can do.

It is a perspective view which shows the state which connected the connection cable, the 1st earthing conductor, and the electric power application apparatus to the cable connection state switching apparatus which concerns on 1st Embodiment of this invention. It is the schematic which shows the internal structure of the cable connection state switching apparatus which concerns on 1st Embodiment. It is AA arrow sectional drawing of the cable connection state switching apparatus shown in FIG. It is a BB arrow sectional view of the cable connection state change device shown in FIG. It is the schematic which shows the internal structure in the application possible state of the cable connection state switching apparatus which concerns on 1st Embodiment. It is the schematic which shows the internal structure in the ground fault state of the cable connection state switching apparatus which concerns on 1st Embodiment. It is a perspective view which shows the state which connected the connection cable, the 1st earthing conductor, and the electric power application apparatus to the cable connection state switching apparatus which concerns on 2nd Embodiment of this invention. It is the schematic which shows the internal structure of the cable connection state switching apparatus which concerns on 2nd Embodiment. It is CC sectional view taken on the line of the cable connection state switching apparatus shown in FIG. It is DD sectional view taken on the line of the cable connection state switching apparatus shown in FIG. It is the schematic which shows the internal structure in the application possible state of the cable connection state switching apparatus which concerns on 2nd Embodiment. It is the schematic which shows the internal structure in the ground fault state of the cable connection state switching apparatus which concerns on 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a perspective view showing a state in which a connection cable 2, a first ground conductor 3, and a power application device 4 are connected to the cable connection state switching device 1 according to the first embodiment of the present invention. FIG. 2 is a schematic diagram illustrating an internal configuration of the cable connection state switching device 1 according to the first embodiment.

  As shown in FIGS. 1 and 2, the cable connection state switching device 1 according to the first embodiment includes a rectangular box-shaped housing unit 10, a cable connection unit 11 that connects the base end of the connection cable 2, and A ground conductor connecting portion 12 for connecting the base end portion of the first ground conductor 3, a power applying device connecting portion 13 for connecting the power applying device 4, and a changeover switch portion 6 are provided.

  The cable connection state switching device 1 can be applied to connect the ground connection state between the cable connection portion 11 and the ground conductor connection portion 12 and the cable connection portion 11 and the power application device connection portion 13 by the changeover switch portion 6. It can be switched to a state.

  First, the connection cable 2, the first grounding conductor 3, and the power application device 4 connected to the cable connection state switching device 1 will be described.

  The connection cable 2 is formed so as to be connectable to the cable connection portion 11 having a base end portion of 1, and the distal end portion is formed to be connectable to the three-phase three-wire distribution lines W1, W2, and W3. Specifically, the tip of the connection cable 2 includes a first connection cable 21 connected to the distribution line W1, a second connection cable 22 connected to the distribution line W2, and a third connection cable 23 connected to the distribution line W3. It is comprised by.

  The first connection cable 21 includes a cable portion 21a and a connection portion 21b provided at the tip of the cable portion 21a. The connection portion 21b includes a clamp portion 21c that grips the distribution line W1 and a grip portion 21d that is gripped by an operator. The clamp portion 21c is formed by a pair of clamp members that are rotatably connected by a hinge. The clamp portion 21c grips the distribution line W1 by rotating a pair of clamp members and sandwiching a conductor portion (not shown) such as a core wire in the distribution line W1 between the pair of clamp members. The grip portion 21d is formed in a rod shape that can be gripped by an operator, and the tip portion is connected to the clamp portion 21c.

  The second connection cable 22 and the third connection cable 23 have the same configuration as the first connection cable 21. Therefore, about the 2nd connection cable 22 and the 3rd connection cable 23, the 21st code concerning the 1st connection cable 21 is replaced with the 22nd and 23rd respectively, and the explanation concerning the 1st connection cable 21 is used. Description is omitted.

  The first ground conductor 3 includes a conductor portion 30 formed in a rod shape and a cable portion 31. The conductor portion 30 is made of a conductive material, and the first ground conductor 3 is grounded by inserting the tip portion into the ground. One end of the cable portion 31 is connected to the proximal end portion of the conductor portion 30, and the other end portion is formed to be connectable to the ground conductor connecting portion 12. That is, the cable portion 31 connects the conductor portion 30 and the ground conductor connecting portion 12.

The power applicator 4 includes a power applicator main body 40, a power supply connection unit 41, a switching device connection unit 42, and a ground unit 43.
The power applicator main body 40 includes a housing 40a formed in a rectangular box shape, and a DC high-voltage generation circuit (not shown) housed inside the housing 40a.
The housing 40a is made of an insulating material, and has an input terminal portion (not shown), an output terminal portion (not shown), and a ground terminal portion (not shown).
The DC high voltage generation circuit is connected to the input terminal portion, the output terminal portion, and the ground terminal portion inside the housing 40a, and generates a high voltage (for example, 5 kV) DC pulse voltage.
One end of the power supply connection portion 41 is connected to the input terminal portion of the power applicator main body 40, and the other end portion is formed to be connectable to the power supply portion 5. In other words, the power supply connection unit 41 connects the input terminal unit of the power applicator main body 40 and the power supply unit 5.
The switching device connection portion 42 is formed such that one end thereof is connected to the output terminal portion of the casing 40 a of the power applicator main body 40 and the other end thereof is connectable to the power applicator connection portion 13. That is, the switching device connection unit 42 connects the output terminal unit of the power applicator main body 40 and the power applicator connection unit 13.
One end portion of the ground portion 43 is connected to the ground terminal portion of the power applicator main body 40, and the other end portion is connected to a second ground conductor (not shown) that can be grounded to the ground. That is, the ground part 43 grounds the ground terminal part of the power applicator main body 40 to the ground.

Next, the cable connection state switching device 1 according to the first embodiment will be described.
3 is a cross-sectional view of the cable connection state switching device 1 shown in FIG. 4 is a cross-sectional view of the cable connection state switching device 1 shown in FIG.

As shown in FIG. 2 to FIG. 4, the cable connection state switching device 1 includes a housing portion 10, a cable connection portion 11, a ground conductor connection portion 12, a power application device connection portion 13, and a changeover switch portion 6. .
The housing part 10 is formed in a rectangular box shape including an upper surface part 10a, a bottom surface part 10b, a right side part 10c, a left side part 10d, a front part 10e, and a back part 10f. The upper surface portion 10a of the housing portion 10 has a rectangular shape that is long in the left-right direction, and the upper surface portion 10a is formed with a slit portion 10g that extends in the longitudinal direction of the upper surface portion 10a.

  The cable connection portion 11 is disposed on the back surface portion 10 f of the housing portion 10 and penetrates from the inside of the housing portion 10 to the outside. The cable connection portion 11 is formed so that the base end portion of the connection cable 2 can be connected. In the present embodiment, the cable connection portion 11 is connected to the proximal end portion of the connection cable 2 via the animal power connector 8. The livestock connector 8 connects the base end portion of the connection cable 2 and the cable connection portion 11 by fastening one fastening portion 80 in the livestock connector 8.

The ground conductor connection portion 12 is disposed on the left side surface portion 10 d of the housing portion 10 and penetrates from the inside of the housing portion 10 to the outside. The ground conductor connecting portion 12 is formed so that the other end of the cable portion 31 of the first ground conductor 3 can be connected.
The electrical power unit connection part 13 is arrange | positioned at the right side part 10c of the housing | casing part 10, and has penetrated from the inside of the housing | casing part 10 to the exterior. The power-applying device connecting portion 13 is formed so that the other end of the switching device connecting portion 42 of the power-applying device 4 can be connected.

The changeover switch unit 6 is disposed inside the housing unit 10 and includes an operation lever unit 60, a first connection unit 61, and a second connection unit 62.
The operation lever portion 60 is disposed at a substantially central portion inside the housing portion 10. The operation lever portion 60 includes an operation lever main body 63 formed in a rod shape, a lever support portion 64 that supports the operation lever main body 63, a first terminal portion 65, and a second terminal portion 66.

  The lever support portion 64 is disposed at the approximate center of the bottom surface portion 10 b inside the housing portion 10. The lever support portion 64 has a support shaft 64a extending from the front surface portion 10e of the housing portion 10 toward the back surface portion 10f. Further, the cable connecting portion 11 is connected to the lever support portion 64.

  The operation lever body 63 is made of an insulating material. The operation lever main body 63 has a base end portion supported by the support shaft 64a of the lever support portion 64, and the right side surface portion 10c side (hereinafter referred to as the first direction F1 side) around the support shaft 64a of the lever support portion 64. And it is formed so that it can move (turn) on the left side surface portion 10d side (hereinafter referred to as the second direction F2 side). On the other hand, the distal end portion of the operation lever main body 63 protrudes to the outside from a slit portion 10 g formed on the upper surface portion 10 a of the housing portion 10.

The first terminal portion 65 is formed on the operation lever body 63 on the first direction F1 side. The first terminal portion 65 is made of a conductive material and is electrically connected to the cable connection portion 11 via the lever support portion 64.
The second terminal portion 66 is formed on the operation lever body 63 on the second direction F2 side. The second terminal portion 66 is made of a conductive material and is electrically connected to the cable connection portion 11 via the lever support portion 64.

  The first connection portion 61 is provided on the first direction F1 side inside the housing portion 10, and includes a pair of first connection terminals 61a formed of a conductive material and a first support formed of an insulating material. Part 61b.

  The first support portion 61 b is arranged alongside the lever support portion 64 on the bottom surface portion 10 b inside the housing portion 10 on the first direction F1 side of the lever support portion 64. Further, the first support portion 61b has a proximal end portion connected to the bottom surface portion 10b.

The pair of first connection terminals 61a is supported at the tip of the first support portion 61b. Further, the pair of first connection terminals 61 a is electrically connected to the power application device connection unit 13. Further, the pair of first connection terminals 61 a is provided on the first direction F1 side of the first terminal portion 65 and is formed so as to be able to hold the first terminal portion 65.
In other words, the pair of first connection terminals 61a sandwiches the first terminal portion 65 provided on the first direction F1 side of the operation lever body 63 when the operation lever body 63 is moved in the first direction F1. It is formed so that it can be held in a state. That is, the pair of first connection terminals 61a and the first terminal portion 65 constitute a so-called knife switch.

  The second connection portion 62 is provided on the second direction F2 side inside the housing portion 10, and includes a pair of second connection terminals 62a formed of a conductive material and a second support formed of an insulating material. Part 62b.

  The second support portion 62b is arranged side by side with the lever support portion 64 on the bottom surface portion 10b inside the housing portion 10 on the second direction F2 side of the lever support portion 64. The second support portion 62b has a proximal end portion connected to the bottom surface portion 10b.

The pair of second connection terminals 62a is supported at the tip of the second support portion 62b. Further, the pair of second connection terminals 62 a is electrically connected to the ground conductor connection portion 12. Furthermore, the pair of second connection terminals 62a is provided on the second direction F2 side of the second terminal portion 66, and is formed so as to be able to hold the second terminal portion 66.
In other words, the pair of second connection terminals 62a sandwiches the second terminal portion 66 provided on the second direction F2 side of the operation lever body 63 when the operation lever body 63 is moved in the second direction F2. It is formed so that it can be held in a state. That is, the pair of second connection terminals 62a and the second terminal portion 66 constitute a so-called knife switch.

Next, a method for using the cable connection state switching device 1 according to the first embodiment will be described with reference to FIGS. 5 and 6.
FIG. 5 is a schematic diagram illustrating an internal configuration of the cable connection state switching device 1 according to the first embodiment in an applyable state. FIG. 6 is a schematic diagram illustrating an internal configuration of the cable connection state switching device 1 according to the first embodiment in a ground fault state.

  As shown in FIG. 5, when the operation lever body 63 is moved in the first direction F1 (rotated to the first direction F1 side about the support shaft 64a), the pair of first connection terminals 61a of the first connection portion 61 is moved. The first terminal portion 65 provided on the first direction F1 side of the operation lever main body 63 is held so as to be sandwiched. That is, the pair of first connection terminals 61a and the first terminal portion 65 are electrically connected in a state where the first terminal portion 65 is held between the pair of first connection terminals 61a.

  At this time, the pair of first connection terminals 61 a is electrically connected to the power application device connection portion 13, and the first terminal portion 65 is electrically connected to the cable connection portion 11. Therefore, the connection cable 2 connected to the cable connection unit 11 and the power application device 4 connected to the power application device connection unit 13 can be electrically connected. That is, it is possible to make it possible to apply a direct current from the power application device 4 to the connection cable 2.

  On the other hand, as shown in FIG. 6, when the operation lever body 63 is moved in the second direction F2 (rotated to the second direction F2 side about the support shaft 64a), a pair of second connection terminals of the second connection portion 62 is obtained. The second terminal portion 66 provided on the operation lever main body 63 on the second direction F2 side is held by 62a. That is, the pair of second connection terminals 62a and the second terminal portion 66 are electrically connected in a state where the second terminal portion 66 is held between the pair of second connection terminals 62a.

  At this time, the pair of second connection terminals 62 a is electrically connected to the ground conductor connection portion 12, and the second terminal portion 66 is electrically connected to the cable connection portion 11. Therefore, the connection cable 2 connected to the cable connection portion 11 and the first ground conductor 3 connected to the ground conductor connection portion 12 can be electrically connected. That is, the distribution lines W1, W2, and W3 to which the connection cable 2 is connected can be brought into a ground fault state in which a ground fault can be made from the connection cable 2 via the first ground conductor 3.

According to the cable connection state switching device 1 according to the first embodiment having the above-described configuration, the following effects can be obtained.
The cable connection state switching device 1 according to the first embodiment moves a control lever main body 63 in the first direction F1 or the second direction F2, thereby causing a direct current to flow through the connection cables 2 to the distribution lines W1, W2, and W3. Can be switched between an applicable state in which the voltage can be applied and a ground fault state in which the distribution lines W1, W2, W3 are grounded via the connection cable 2.

  Therefore, for example, when the accident point is repaired after the accident point is identified by the power distribution device 4, the ground connection cable is connected to the distribution lines W1, W2 separately from the connection cable 2 used in the power distribution device 4. , W3 need not be installed. Thereby, the work process from the identification of the distribution line in which the ground fault has occurred to the repair can be reduced.

  Moreover, since the work of attaching and detaching the ground connection cable can be reduced, the entire work time can be shortened. Thereby, the power failure time in the accident occurrence area can be shortened. As a result, the power supply in the distribution line can be restored early.

  Further, the first connection terminal 61 a and the first terminal portion 65 are connected in a state where the first connection terminal 61 a is held so as to sandwich the first terminal portion 65. Therefore, the connection state between the first connection terminal 61a and the first terminal portion 65 can be maintained with a simple configuration. Thereby, the cable connection state switching device 1 can be manufactured without increasing the number of parts.

[Second Embodiment]
Next, a cable connection state switching device 1A according to a second embodiment of the present invention will be described with reference to FIGS.
FIG. 7 is a perspective view showing a state in which the connection cable 2, the voltage applying device 4, and the first ground conductor 3 are connected to the cable connection state switching device 1A according to the second embodiment of the present invention. FIG. 8 is a schematic diagram illustrating an internal configuration of the cable connection state switching device 1A according to the second embodiment. FIG. 9 is a cross-sectional view taken along the line CC of the cable connection state switching device 1A shown in FIG. 10 is a cross-sectional view of the cable connection state switching device 1A shown in FIG.

In the second embodiment, mainly the differences from the cable connection state switching device 1 according to the first embodiment will be mainly described, and the configuration similar to that of the cable connection state switching device 1 according to the first embodiment will be described. The same reference numerals are given to those and descriptions thereof are omitted.
That is, in the second embodiment, the description of the first embodiment is appropriately applied to points that are not particularly described. Moreover, about the thing of the structure similar to 1st Embodiment, there exists an effect similar to 1st Embodiment.

  As shown in FIGS. 7 to 10, the cable connection state switching device 1 </ b> A includes a housing portion 10, a cable connection portion 11, a ground conductor connection portion 12, a power application device connection portion 13, and a ground connection portion 14. And a changeover switch unit 6A.

  The ground connection portion 14 is disposed adjacent to the power application device connection portion 13 on the front surface portion 10 e side of the power application device connection portion 13 in the right side surface portion 10 c of the housing portion 10. Has penetrated. Moreover, the ground connection part 14 is formed so that the other end part of the ground part 43 of the power-applying device 4 can be connected.

  The changeover switch unit 6A includes an operation lever unit 60A, a first connection unit 61, a second connection unit 62, and a pair of third connection units 72.

  The operation lever portion 60A includes a rod-shaped operation lever main body 63, a lever support portion 64 that supports the operation lever main body 63 so as to be movable in the first direction F1 and the second direction F2, a first terminal portion 65, A second terminal portion 66, a terminal support portion 70, and a pair of third terminal portions 71 are provided.

  The terminal support portion 70 is formed in a rectangular plate shape with an insulating material, and a base end portion in the longitudinal direction of the terminal support portion 70 is connected to the operation lever main body 63. On the other hand, the distal end portion of the terminal support portion 70 extends toward the front surface portion 10e.

  The pair of third terminal portions 71 are made of a conductive material, and include a third terminal portion 71a for connecting electrical grounding and a third terminal portion 71b for connecting the first conductor. The third terminal portion 71a for connecting the electric power ground and the third terminal portion 71b for connecting the first conductor are electrically connected to each other. The third terminal portion 71a for connecting to the power-supplying ground is disposed on the front side of the first terminal portion 65 (on the front surface portion 10e side of the housing portion 10), and the third terminal portion 71b for connecting the first conductor is connected to the power-charging ground. It is arrange | positioned in the front side (front-surface part 10e side in the housing | casing part 10) of the 3rd terminal part 71a for a connection. In addition, the third terminal portion 71a for connecting electrical ground and the third terminal portion 71b for connecting the first conductor are supported by the terminal support portion 70 in a state of extending in the first direction F1.

The pair of third connection portions 72 is disposed on the first direction F <b> 1 side of the pair of third terminal portions 71 and is formed adjacent to the first connection portion 61.
A pair of 3rd connection parts 72 are provided with the 3rd connection part 72a for electrical power grounding connections, and the 3rd connection part 72b for 1st conductor connections.
The third ground connection portion 72a for connecting to the power supply ground includes a pair of third connection terminals 73a formed of a conductive material and a third support portion 73b formed of an insulating material.

  The third support portion 73b is disposed adjacent to the first support portion 61b on the front side of the first support portion 61b (on the front surface portion 10e side in the housing portion 10). Further, the third support portion 73b has a base end portion connected to the bottom surface portion 10b.

The pair of third connection terminals 73a is supported at the tip of the third support portion 73b. Further, the pair of third connection terminals 73 a is electrically connected to the ground connection portion 14. Further, the pair of third connection terminals 73a is provided on the first direction F1 side of the third terminal portion 71a for connecting the electrical ground, and is formed so as to be able to hold the third terminal portion 71a for connecting the electrical ground. Yes.
In other words, the pair of third connection terminals 73a is a third terminal for connecting a grounding power provided on the first direction F1 side of the operation lever body 63 when the operation lever body 63 is moved in the first direction F1. It is formed so that it can be held with the portion 71a interposed therebetween. In other words, the pair of third connection terminals 73a and the third terminal portion 71a for connecting the power application ground constitute a so-called knife switch.

  The third conductor connection third connection portion 72b includes a pair of third connection terminals 74a formed of a conductive material and a third support portion 74b formed of an insulating material.

  The third support portion 74b is disposed adjacent to the third support portion 74b on the front side of the third support portion 73b (the front surface portion 10e side in the housing portion 10). In addition, the third support portion 74b has a proximal end portion connected to the bottom surface portion 10b.

The pair of third connection terminals 74a is supported at the tip of the third support portion 74b. Further, the pair of third connection terminals 74 a is electrically connected to the second connection terminal 62 a by the cable 75. Further, the pair of third connection terminals 74a is provided on the first direction F1 side of the first conductor connection third terminal portion 71b, and is formed so as to be able to hold the first conductor connection third terminal portion 71b. Yes.
In other words, the pair of third connection terminals 74a are the first conductor connection third terminals provided on the first direction F1 side of the operation lever body 63 when the operation lever body 63 is moved in the first direction F1. It is formed so that it can be held with the portion 71b interposed therebetween. That is, the pair of third connection terminals 74a and the first conductor connection third terminal portion 71b constitute a so-called knife switch.

Next, a method of using the cable connection state switching device 1A according to the second embodiment will be described with reference to FIGS.
FIG. 11 is a schematic diagram illustrating an internal configuration of the cable connection state switching device 1 </ b> A according to the second embodiment in a state where application is possible. FIG. 12 is a schematic diagram illustrating an internal configuration of the cable connection state switching device 1A according to the second embodiment in a ground fault state.

  As shown in FIG. 11, when the operating lever body 63 is moved in the first direction F1 (rotated toward the first direction F1 around the support shaft 64a), the pair of first connection terminals 61a of the first connection portion 61 are moved. The first terminal portion 65 provided on the operation lever main body 63 is held so as to be sandwiched. That is, the pair of first connection terminals 61a and the first terminal portion 65 are electrically connected in a state where the first terminal portion 65 is held between the pair of first connection terminals 61a.

  At this time, the pair of first connection terminals 61 a is electrically connected to the power application device connection portion 13, and the first terminal portion 65 is electrically connected to the cable connection portion 11. Therefore, the connection cable 2 connected to the cable connection unit 11 and the power application device 4 connected to the power application device connection unit 13 can be electrically connected. That is, it is possible to make it possible to apply a direct current from the power application device 4 to the connection cable 2.

  Similarly, when the operation lever main body 63 is moved in the first direction F1 (rotated to the first direction F1 side about the support shaft 64a), a pair of third connection terminals 73a of the third connection portion 72a for charging ground connection. In addition, the third terminal portion 71 a for connecting to the grounding power provided on the terminal support portion 70 is held so as to be sandwiched. That is, the pair of third connection terminals 73a and the third terminal portion 71a for connecting the grounding power are held so that the third terminal portion 71a for connecting the grounding power is sandwiched between the pair of third connection terminals 73a. Is electrically connected.

  Further, the first conductor connection third terminal portion 71b provided on the terminal support portion 70 is held between the pair of third connection terminals 74a of the first conductor connection third connection portion 72b. That is, the pair of third connection terminals 74a and the first conductor connection third terminal portion 71b are held so that the first conductor connection third terminal portion 71b is sandwiched between the pair of third connection terminals 74a. Is electrically connected.

  At this time, the pair of third connection terminals 73 a is electrically connected to the ground connection portion 14, and the pair of third connection terminals 74 a is connected to the pair of second connection terminals 62 a via the cable 75. In addition, the third terminal portion 71a for connecting the electrical ground and the third terminal portion 71b for connecting the first conductor are electrically connected. Therefore, the ground part 43 of the power application device 4 connected to the ground connection part 14 and the first ground conductor 3 connected to the ground conductor connection part 12 can be electrically connected. That is, the ground portion 43 of the power application device 4 can be connected to the first ground conductor 3.

  On the other hand, as shown in FIG. 12, when the operation lever main body 63 is moved in the second direction F2 (rotated to the second direction F2 side about the support shaft 64a), a pair of second connection terminals of the second connection portion 62 is obtained. The second terminal portion 66 provided on the operation lever main body 63 on the second direction F2 side is held by 62a. That is, the pair of second connection terminals 62a and the second terminal portion 66 are electrically connected in a state where the second terminal portion 66 is held between the pair of second connection terminals 62a.

  At this time, the pair of second connection terminals 62 a is electrically connected to the ground conductor connection portion 12, and the second terminal portion 66 is electrically connected to the cable connection portion 11. The pair of second connection terminals 62a is electrically connected to the pair of third connection terminals 74a via the cable 75, but the pair of third connection terminals 74a and the first conductor connecting third terminal portion. 71b is not electrically connected.

  Therefore, the connection cable 2 connected to the cable connection portion 11 and the first ground conductor 3 connected to the ground conductor connection portion 12 can be electrically connected, but are connected to the pair of third connection terminals 73a. The ground connection portion 14 and the first ground conductor 3 are not electrically connected. That is, only the distribution lines W1, W2, and W3 to which the connection cable 2 is connected can be brought into a ground fault state in which a ground fault can be made from the connection cable 2 via the first ground conductor 3.

According to 1 A of cable connection state switching apparatuses which concern on 2nd Embodiment which has the above structures, in addition to the effect similar to 1st Embodiment, there exist the following effects.
The cable connection state switching device 1 according to the second embodiment applies an application capable of applying a direct current to the distribution lines W1, W2, and W3 via the connection cable 2 by moving the operation lever body 63 in the first direction F1. While being able to be made into a possible state, the earthing | grounding part 43 of the electrical charging apparatus 4 can be connected to the 1st earthing conductor 3. FIG. For this reason, the cable connection state switching device 1 can be put into an applicable state without separately connecting the power application device 4 to the second ground conductor and causing a ground fault. Thereby, the work process from the identification of the distribution line which a ground fault etc. generate | occur | produced to restoration can be reduced. As a result, the working time can be shortened, and the power supply in the distribution line can be restored early.

  In addition, this invention is not limited to the said embodiment at all, and the technical scope of this invention is not limited to these. Further, the effects described in the embodiments of the present invention only list the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the embodiments of the present invention.

  For example, in the present embodiment, the changeover switch unit 6A is configured to switch between the application enable state and the ground fault state by moving the operation lever body 63, but the present invention is not limited to this. The configuration for switching between the applicable state and the ground fault state may be a configuration in which a switch for switching is provided and the switch can be switched between the applicable state and the ground fault state by pressing the press switch.

DESCRIPTION OF SYMBOLS 1, 1A Cable connection state switching apparatus 2 Connection cable 3 1st earthing conductor 4 Electric power application apparatus 6 Changeover switch part 11 Cable connection part 12 Grounding conductor connection part 13 Electric power application apparatus connection part 14 Earth connection part 60, 60A Operation lever part 61 1st connection part 62 2nd connection part 65 1st terminal part 66 2nd terminal part 72 3rd connection part 71 3rd terminal part W, W1, W2, W3 Distribution line

Claims (5)

A cable connecting portion for connecting a proximal end portion of a connection cable having a distal end detachably attached to the distribution line and connectable to the distribution line;
A power-applying device connecting section for connecting a power-applying device capable of applying a direct current to the connection cable;
A ground conductor connecting portion for connecting a base end portion of the grounded first ground conductor;
An applicable state in which a direct current can be applied to the connection cable by connecting the cable connection unit and the power applicator connection unit, and the connection cable by connecting the cable connection unit and the ground conductor connection unit. A changeover switch unit that can be switched to a ground fault state through which the distribution line can be grounded,
A cable connection state switching device. The changeover switch part is
An operation lever portion connected to the cable connection portion and movable in a first direction and a second direction;
When the operation lever portion is connected to the power application device connection portion and the operation lever portion is moved in the first direction, the operation lever portion and the power application device connection portion are electrically connected, and the operation lever portion and A first connecting portion for maintaining an electrical connection state with the power-applying device connecting portion;
When the operation lever portion is connected to the ground conductor connection portion and moved in the second direction, the operation lever portion and the ground conductor connection portion are electrically connected, and the operation lever portion and the ground are connected. A second connecting portion for maintaining an electrical connection state with the conductor connecting portion;
A cable connection state switching device according to claim 1. The operation lever portion is
A first terminal portion formed in a substantially plate shape and connected in a state of being held so as to be sandwiched between the first connection portions when the operation lever portion is moved in the first direction;
A second terminal portion that is formed in a substantially plate shape and is connected so as to be sandwiched between the second connection portions when the operation lever portion is moved in the second direction;
The cable connection state switching device according to claim 2. The power application device includes a ground terminal portion connectable to a grounded second ground conductor,
4. The cable connection state switching according to claim 3, wherein the changeover switch portion further includes a third connection portion that is connected to the ground terminal portion and is electrically connectable to the second connection portion in the application enabled state. apparatus. The third connection portion has a ground connection portion connected to the ground terminal portion, and a conductor connection portion connected to the second connection portion,
The operation lever portion moves in the first direction to electrically connect the ground connection portion and the conductor connection portion when the first terminal portion and the first connection portion are electrically connected. The cable connection state switching device according to claim 4, further comprising a third terminal portion to be connected to the cable.

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