JP2759778B2 - Uninterruptible bypass connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a power supply side electric wire of an entrance connector and a customer's entrance opening / closing for the purpose of replacing a power distribution device such as an integrating wattmeter of a low voltage distribution line without interruption. The present invention relates to an uninterruptible bypass connection device capable of performing a replacement operation without a voltage without interrupting an electric circuit to a customer by attaching a bypass connection tool to a load side of the container and short-circuiting the bypass connection line with a bypass line.

[0002]

2. Description of the Related Art Conventionally, in order to replace a power distribution device such as an integrating wattmeter installed between a connector at a low-voltage service entrance and a service switch of a customer in an uninterrupted state, it is necessary to use a replacement device such as a meter. The electric wires are exposed by stripping the coverings of the power-supply-side electric wire and the load-side electric wire on the close side at appropriate locations, and both ends of the bypass line are connected to the exposed portions.

[0003] Further, as a bypass connector for uninterruptible power supply replacement of low-voltage equipment, there is a connector in which a pointed movable connection terminal for connecting a bypass cable is penetrated through a sheath of a connection wire (Japanese Utility Model Publication 4-7572). Reference).

[0004]

In the former method described in the above-mentioned prior art, it takes a long time to strip the covering of the electric wire, and it is necessary to cover the stripped part with tape or the like after the completion of the replacement work. Not the preferred way.

In the latter bypass connection device, the pointed movable connection terminal is pierced into the connection electric wire and connected, but the contact portion cannot be visually observed, and it is difficult to confirm whether or not the connection is established. Is required separately, and after completion of the replacement work, post-processing of the wound through the coating is required, which is complicated.

Further, various types of bypass connectors have been developed which enable connection of a bypass line to a terminal portion of an instrument. However, like a meter with a low-voltage transformer, a terminal portion is built in and suitable for mounting the bypass connector. Some are not.

[0007] In addition, in the case where it is desired to make the replacement section no-voltage in order to ensure the safety of the work, it is impossible with the above method. For this purpose, the connection of the bypass connector is considered as a general-purpose tightening type connector that is a connection point of the inlet on the power supply side, and a knife switch or a no-fuse breaker that is commonly used as a customer's retract switch on the load side. However, there is no consideration to enable connection of a bypass connector, and there is a problem that a general-purpose bypass connector cannot be connected.

The present invention has been made in view of such a problem, and the power supply side has a power supply side electric wire of a connector for connecting the power supply side electric wire and the service line at the connection point of the service entrance, and the service line.
Connect the switchgear to which the load side electric wire is connected with the bypass line.
In the uninterruptible bypass device, the knife switch of the drop-in switch on the load side is connected to the load-side open / close structure, and the no-fuse breaker is connected to the load side by using the terminal connection on the load side. A power failure bypass connection device was developed.

The present invention is based on the development of the uninterruptible bypass connection device described above, and is used for replacing a power distribution device such as an integrating wattmeter.
With the uninterruptible power on the customer side, connect the bypass connector to the connector at the service entrance, connect the bypass connector to the load side of the switch, open the switch, loosen the tightening of the connector, and drop in the service line. The present invention provides an uninterruptible bypass connection device that performs a replacement operation safely and promptly by setting the replacement section to a no-voltage state.

[0010]

According to the first aspect of the present invention, there is provided an uninterruptible bypass connection device , comprising:
Connect the wire A and the drop-in wire A1 with a connector such as a fastening connector.
At the wire holding portion on the power supply side wire A side in the connected connection part
By-pass connector 1 for wire connection that can be pinched and connected, and drop wire
A1 and a knife switch for opening and closing the connection between the load-side electric wire A2
H, breaker, etc. can be connected to the connection part of the switch C.
Switch bypass connection is provided, and low-voltage distribution
A bypass that bypasses the electrical appliance and short-circuits the power supply and load
Pass the wire B to the bypass connection device for electric wire connection and the
Can be connected to power supply side wire A and load side wire A2 with pass connector
In uninterruptible connection device according to ability, as a closing device for a bypass fitting, the contact fittings 6 having a contact portion 7 in tip insulator made instrument body 20 is fixed, hook-like with respect to the contact fittings 6 sliding rod The operating shaft 9 is connected to the base of the hook-shaped sliding rod 21 via a link mechanism 22 so as to be able to convert the rotational movement into the forward / backward movement. Providing a bypass line connecting portion 8 for connecting one end of the bypass line,
An opening / closing device bypass connector 2 is provided which allows the hook-shaped sliding rod 21 to move forward and backward with respect to the contact fitting 6 by the simultaneous operation of the operating shaft 9 so that the hinge fitting c of the knife switch C1 can be clamped.
The contact fitting 6 is applied to one side of the hinge fitting c of the knife switch C, and the operating shaft 9 is turned to rotate the hook-shaped sliding rod 21.
Are moved forward and backward, and the hinge fitting c is sandwiched between them for connection.

The power supply side electric wire A at one of the inlets is
It is clamped and connected by the wire connection bypass connector 1 and bypassed.
One end of the wire B is connected, and the other drop wire A1 and the load side wire A
When the switch C at the connection part with No. 2 is a knife switch C1,
The hinge fitting c pivotally supporting the opening / closing knife is used, and the other end of the bypass line B is connected to the bypass wire connecting portion 8 and the contact fitting 6 of the bypass fitting 2 is connected to the hinge fitting c.
, The operating shaft 9 is rotated, the hook-shaped sliding rod 21 is retracted, and the hinge fitting c is sandwiched and connected between the contact fitting and the hook, thereby forming an uninterruptible bypass circuit. Thereafter, when the knife switch is opened, the electric power is supplied to the customer by bypassing the bypass line without interruption. Thereafter, by loosening the connection at the service entrance and removing the service line A1, the section leading to the switch is set to zero voltage, and the power distribution equipment such as instruments in the meantime can be safely replaced.

A second aspect of the present invention is a power supply side electric wire of a low voltage distribution line.
A on the power supply side electric wire A side at the connection portion between the power line A and the drop line A1.
Bypass connector for electric wire connection that can clamp and connect the wire with the clamping section
1 and an opening and closing for opening and closing the connection between the service line A1 and the load side electric wire A2.
Opening / closing instrument viper that can be connected to the connection part of the closing instrument C
And a low-voltage distribution device such as an integrating wattmeter.
And connect the bypass line B that short-circuits the power supply and load
Connect the bypass connection for connection and the bypass connection for switchgear.
Uninterruptible power supply that can be connected to source side wire A and load side wire A2
In bypass connection device, a bypass connector-off device
As a, the lower front provided with a plurality of insertion holes 32 and opening 33 'and the bypass line connection 8 to the upper' contact portion 7 to the lower insert a contact fittings 6 'provided with a perpendicularly hole 3
2, a bypass line connecting portion 8 'is provided facing the opening 33 so as to be movable in the vertical direction, and the contact fitting 6' is connected to the operating shaft 9 '.
An insulating upper body 30 provided to be able to move up and down by the rotation of
A receiving plate 34 for holding the wire crimping portion e of the load-side electric wire A2 and an insulating lower body 31 provided with a holding plate 35 capable of being tightened by tightening means 36 such as screws are provided. A load-side electric wire A provided so as to be connectable to the receiving plate 34 of the body 31 by a connecting means 37 such as a screw and held by the lower body 31.
Opening / closing device provided so that the contact portion 7 'of the contact fitting 6' of the upper body 30 can be brought into contact with the terminal connection portion d with the breaker C2 of No. 2
After connecting the load-side electric wire A2 with the lower body of the switchgear C, the operation shaft 9 'of the upper body is turned to connect the load-side electric wire A2 with the switchgear. The contact fitting 6 'is brought into contact with the connection terminal d of the section.

The power supply side electric wire at one of the inlets is
It is pinched and connected by the connection bypass connector 1 and the bypass line B
When one end is connected and the other switch C is a no-fuse breaker C2, the other end of the bypass line B is connected to the bypass line connection portion 8 'using the terminal connection portion d with the load side electric wire A2. First, the wire crimping portion e of the load side electric wire A2 is sandwiched between the receiving plate 34 and the holding plate 35 of the lower body 31 and tightened by the fastening means 36, and the upper body 30 is joined onto the lower body 31 by the joining means. 37, and by rotating the operating shaft 9 ', the contact fitting 6' is lowered to come into contact with the connection terminal d with the load-side electric wire A2, thereby forming the uninterruptible bypass circuit.
Configure. After accordingly, to open a no-fuse breaker, is the same customer by removing the pull wire by loosening the service entrance connector remains uninterrupted, replacement work is to safely performed in the voltage-off state .

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, an uninterruptible bypass connection device according to the present invention
And the lower holding plate 12 is swingably supported on the upper end of a threaded rod of the operating shaft 4 screwed into the lower part of the conductor 10, and the conductor 10
The contact fitting 6 is fixed to the body 20 and the hook-shaped sliding rod 21 is freely movable with respect to the contact fitting 6, and the hook-shaped slide is provided. A bypass line connecting tool provided with an operating shaft 9 connected to the base of the moving rod 21 via a link mechanism 22 so as to be able to convert a rotational movement into an advancing / retracting movement, and having a bypass line connecting part 8 provided at a base end of the contact fitting 6. 2 and the bypass connection part 5 of the bypass connection tool 1
And the bypass connection portion 8 of the bypass connector 2 to the bypass line B
Connect and configure with.

Therefore, according to the uninterruptible bypass connection device of this configuration, the wire-exposed portion of the connection point of the fastening type connector generally used for connecting the power supply side wire and the drop-in wire as the connection point of the drop-in port of the low-voltage distribution wire. First, remove the protective cover of the connector to connect the bypass line using
As shown in FIG.
2, the electric wire covering part a and the electric wire exposed part b of the electric power source side electric wire are sandwiched and tightened by turning the operation shaft 4 to connect the bypass connector 1 to the electric power source side electric wire A, and as shown in FIGS. 10 to 12. Then, after removing the maintenance cover G of the fuse, the hook-shaped sliding rod 21 of the contact fitting 6 of the bypass connector 2 is inserted through the opening K of the hinge portion of the cover J of the knife switch C1, and the contact fitting is inserted into the hinge fitting c. 6, the hook-shaped sliding rod 21 is retracted by the rotation of the operation shaft 9, the hinge fitting c is pinched and connected, and the bypass connection 2 is connected to the load-side electric wire A <b> 2, thereby forming a bypass path. Can be configured. In the same manner, a bypass path is formed for each phase, and thereafter, the lead-in line A1 is disconnected from the connector, the open / close lever of the knife switch is opened, and the replacement section is set to no voltage, and the instruments are repaired and replaced.

As shown in FIG. 2, another bypass connection device includes the same bypass connection tool 1 as described above and a plurality of insertion holes 3.
2 and an opening 33 in the lower part of the front surface, a contact part 7 'in the lower part, and a contact fitting 6' having a bypass line connecting part 8 'in the upper part in an orthogonal shape. The upper part 30 made of insulating material provided so as to be movable in the up and down direction and the contact fitting 6 'can be raised and lowered by the rotation of the operation shaft 9', and the receiving plate 34 and the holding plate 35
6, and an insulative lower body 31 provided so as to be able to be tightened,
Screw the upper body 30 onto the receiving plate 34 of the lower body 31
By using a bypass connector 2 ′ provided so as to be able to be coupled with the bypass connector 2, the bypass line connecting portion 5 of the bypass connector 1 and the bypass line connecting portion 8 ′ of the bypass connector 2 ′ are connected by a bypass line B. .

Therefore, according to the uninterruptible bypass connection device of this configuration, the bypass connection device 1 is connected to the power supply side electric wire of each phase in the same manner as described above, and as shown in FIGS. The crimping portion e of the three-phase load-side electric wire A2 connected to the no-fuse breaker C2 is received by the receiving plate 34 of the lower body 31 of 2 ', and the pressing plate 35 is applied from above and tightened with the screw 36. The upper body 30 is connected to the body 34 by screws 37, and then the operating shaft 9 'is provided for each phase.
Is turned to lower the contact fitting 6 ', and the lower end of the contact fitting 6' is brought into contact with the terminal connection portion d to form a bypass path. Then, remove the service line A1 from the connector,
Open the circuit breaker and replace or replace the section with no voltage to repair or replace instruments.

[0018]

FIG. 3 shows an example of wiring from a power supply side of a service entrance connector of a low-voltage distribution line to a load side of a customer service drop switch via a fastening type connector, a service wire, and an integrating wattmeter with a transformer. 1 shows a state in which an uninterruptible bypass connection device including a series of bypass connection tools and a bypass line according to the present invention is connected to a power supply-side electric wire of a connection device and a load-side terminal portion of a switch, and short-circuited.

A is a power supply side wire of a low-voltage distribution line, a is a wire covering portion thereof, b is a wire exposed portion, A1 is a lead wire, S is a stripping of the power supply side wire and the end portion of the drop wire, exposing and holding the wire. It is a connector that is inserted into the part and pinched by tightening the tightening bolt. A2 is a load-side electric wire, B is a bypass line for short-circuiting the power-supply-side electric wire A and the load-side electric wire A2, and C is a drop-in switch. In the embodiment, a knife switch C1 with a general-purpose cover and a no-fuse breaker C2 are shown. It is. E is an integrating wattmeter, and F is a low-voltage transformer.

In FIGS. 1 to 3, reference numeral 1 denotes a bypass connector for connecting a bypass line B to a power supply side electric wire A of an inlet connector, and a pair of each phase is connected for each phase, and 2 is a knife with a cover. A bypass connector for the switch C1 is also connected to each of the phases on the load side in the same manner as a set of each phase, 2 'is a bypass connector of the no-fuse breaker C2, and a bypass connector of each phase is an integrated device. The connection operation is performed for each phase on the load side, which is housed in the body.

FIGS. 4 to 6 show the bypass connector 1 used for the electric wire on the power supply side of the lead-in port. The bypass connector 1 includes a U-shaped conductor 10 and a conductive holding portion 3 that can hold an electric wire covering portion a near the connection portion of the connector S on the power supply side electric wire A side and an electric wire exposed portion b between the covering portion and the connector. Are provided so as to be able to be pinched by the operation of the operation shaft 4, and a plate-shaped bypass line connecting portion 5 for connecting the bypass line B to the outside of the conductor 10 is formed obliquely integrally.

As the holding portion 3, an upper holding plate 11 is integrally fixed to an upper portion 10a of the U-shaped conductor 10, and a lower holding plate 12 facing the upper holding plate 11 is connected to a lower portion 10b of the conductor 10.
Swingably supported on the upper end of the threaded rod of the operating shaft 4 screwed into the
The lower holding plate 12 is provided so as to be able to move up and down with respect to the upper holding plate 11 by the rotation operation of the screw rod, and the wire covering portions a are held by the holding portions 11a, 11b, 12a, 12b at both ends of the holding plates 11, 12.
And the exposed wire portion b.

4 and 5, the lower holding plate 12
As a means for swingably supporting the upper end of the screw 4, the bottom surface of the lower holding plate 12 has an obtuse angle, the corner of which abuts against the disc spring 16 to swing freely on the upper shaft 4 a of the screw 4. An elliptical concave portion 13 is formed in the center of the holding plate 12, and the screw rod 4 is formed.
Ring 1 fixed with a stop pin 15 near the upper end of the
The lower holding plate 12 is loosely fitted on the upper shaft portion 4a of the screw rod 4 with a disc spring 16 interposed on the screw 4, and a lock washer 18 is fixed in the oval recess 13 with a screw 19.

In FIG. 5 and FIG. 6, the holding portions 11a, 12a and 11b at both ends of the upper and lower holding plates 11 and 12 are shown.
12b is provided with the holding portions 11a, 12a slightly longer than 11b, 12b so as to correspond to the diameter difference between the electric wire covering portion a and the electric wire exposed portion b, and by rotating the screw 4, the lower holding plate 11 with respect to the upper holding plate 11. When raising and holding 12, the holding portion 11 at one end
The wire covering portion a is sandwiched between the wires a and 12a, and at the same time, the wire exposed portion b can be sandwiched between the holding portions 11b and 12b at the other ends. Also, the holding portions 11a at both ends of the upper and lower holding plates 11 and 12,
A recess is formed at the center of 12a, 11b, and 12b so that the wire cover portion a and the wire exposed portion b are not laterally shifted by the recess when sandwiching the wire exposed portion b. An insulating handle 4b is provided at the lower end of the screw 4 of the operating shaft.

7 to 10, a bypass connector 2 for a switch used for a knife switch C1 with a cover.
Is shown. The bypass connector 2 includes a contact fitting 6 having a contact portion 7 for contacting the hinge fitting c of the knife switch C1 with a cover and a bypass wire connecting portion 8 for connecting the bypass wire B to the insulating vessel 20. By operation, the contact part 7 of the contact fitting 6 is brought into contact with the hinge fitting c.

The insulating vessel 20 made of synthetic resin or the like is formed by integrally inclining a rectangular body 20b having a rectangular shape having an operating shaft 9 on a rectangular body 20a accommodating the contact fitting 6 therein at a predetermined angle. A contact fitting 6 having a contact portion 7 at a tip and a bypass line connecting portion 8 at a rear portion of a rectangular body 20a is fixed to a body 20 with the contact portion 7 protruding and is screwed to an upper surface of the contact fitting 6. A guide groove 23 is provided in the longitudinal direction, and a hook-shaped sliding rod 21 having a hook 21a at a distal end is provided in the guide groove 23 so as to freely advance and retreat, and the operation shaft 9 is connected to the base end of the hook-shaped sliding rod 21 by a link mechanism 22. The hook-shaped sliding rod 21 is moved forward and backward with respect to the contact fitting 6 by turning operation of the operating shaft 9 so as to be able to convert the turning movement into a forward-backward movement via the knife switch C with a cover.
The first hinge fitting c is pinched to enable connection.

In FIGS. 8 and 9, the contact fitting 6 is made of a conductive material, a projection is formed at its tip as a contact portion 7, and the guide slides the hook-shaped sliding rod 21 linearly in the longitudinal direction. The lower member 6a in which the groove 23 is formed and the upper member 6b in which the notch groove 24 is provided on one surface of the central portion and the bypass line connecting portion 8 is provided on the rear end are fixed by screws, and the contact fitting 6 is protruded at the front end. The container 20 is fixed in the rectangular body 20a with screws. The reason why the upper member 6b and the lower member 6a are separated and screwed is that a movable mechanism from the operating means 9 to the hook-shaped sliding rod 21 can be assembled.

In FIG. 9, a hook-shaped sliding rod 21 is provided in a guide groove 23 of the contact fitting 6 so as to freely slide by a predetermined stroke L, and a connecting rod 24 is pivotally supported at a base end of the sliding rod 21. The threaded rod of the operating shaft 9 screwed into the fixing member 25 screwed in the cylindrical body 20b is connected to the connecting rod 24 via the joint 26, and the rotating motion of the operating shaft 9 is moved forward and backward by the hook-shaped sliding rod 21. The hook 2 at the tip of the sliding rod 21
1a makes the distance between the tip of the contact fitting 6 and the contact portion 7 possible.

In FIG. 9, a joint 26 for connecting the screw rod 9 and the connecting rod 24 is provided with a bolt 28 inserted through the bottom of a bottomed cylinder 27 slidably inserted into an insertion hole of the cylinder 20b. Is screwed into the upper end 24a of the connecting rod 24, and a disc spring 29 is mounted on the head of the bolt 28 in the cylindrical body 27.
The screw 9 is screwed into the upper part of the cylindrical body 27, and the screw 9
Is screwed into a fixing member 25 on the upper part of the cylindrical body 20a, an insulative handle 9a is fixed to the end of the screw rod 9, and the handle 9a is turned to rotate the screw 9 in the joint 26 and the bolt. The movement is converted into an axial elevating movement of 28, and the elevating movement is converted into a horizontal advancing / retreating movement of the hook-shaped sliding rod 21 via the connecting rod 24.

FIGS. 13 to 16 show a three-phase bypass connector 2 'connected to a no-fuse breaker, showing a structure in which three sets of bypass devices are housed in an integrated body. The bypass connector 2 'includes a contact member 6' having a contact portion 7 'for contacting the terminal connection portion d of the no-fuse breaker C2 and a connection portion 8' for connecting the bypass line B. An insulating upper body 30 made of synthetic resin in which the contact portion 7 'of the metal fitting 6' is brought into contact with the terminal connection portion d, and an insulating lower portion made of synthetic resin holding the wire crimping portion e of the load-side wire A2. Combined with the body 31, and the lower body 31 is connected to the load side electric wire A.
No. 2 terminal connection part d.

In FIG. 13 and FIG.
Reference numeral 0 designates a partition wall 30a for partitioning three phases of bypass line connecting portions 7 'for three phases and a reinforcing wall 30c for connecting the front end of the partition wall 30a, and a through hole 30b for a driver is opened in the reinforcing wall 30c. And three insertion holes 32
Are provided in the vertical direction, and openings 33 are provided between the partition walls 30a below the partition walls 30c.

In FIG. 16, a contact fitting 6 'is made of a conductive material, and a lower end of a rod is formed as a flat contact portion 7', and a plate-like bypass line connecting portion 8 for connecting a bypass line B to an upper portion thereof. 'Are provided orthogonally.

In FIG. 15, the contact fitting 6 'is inserted below the insertion hole 32 of the upper body 30 with the bypass line connecting portion 8' facing the opening 33, and the insertion fitting is inserted into the upper part of the contact fitting 6 '. An operating shaft 9 'screwed into the fixing member 38 in the connecting member 32 is continuously provided through a joint 39, and the rotational movement of the operating shaft 9' is
9. Converting the vertical movement of the contact fitting 6 'in the vertical direction, the contact part 7' at the lower end of the contact fitting 6 'comes into contact with the terminal connection part d.

Joint 39 for connecting screw rod 9 'and contact fitting 6'
A bolt 9 'is inserted through the upper wall of the cylindrical body 40 with the upper wall slidably inserted into the insertion hole 32 and screwed into the fixing member 38, and a disc spring 41 is provided below the head of the bolt 9'. , Cylindrical body 40
The upper part of the contact fitting 6 'is inserted into the lower part of the rod, and is fixed with the stopper pin 42. The operating rod 9'a having an insulating property is fixed to the screw rod 9' with the stopper pin, and the operation handle 9'a is rotated. The contact fitting 6 'is moved up and down.

In FIG. 15, the lower body 31 has a receiving plate 34 for holding the wire crimping portion e of the load side wire A2 and a holding plate 3
5 is fastened with fixing screws 36 on both sides. 3
6a is an insulating handle of the fixing screw 36. Receiving plate 34
Makes the rear end abut against the terminal block of the breaker C2, places the load-side electric wire A2 on the upper surface, and makes the contact fitting 6 'of the upper body 30 contact the terminal connection portion d of the electric wire A2 on the receiving plate 34. Further, the holding plate 35 is shortened so as not to contact the contact fitting 6 ', and a partition wall 35a for dividing the contact fitting 6' corresponding to the partition wall 30a is integrally formed.

As a connecting means 37 between the upper body 30 and the lower body 31, a threaded rod 37 having an insulating handle 37 a at the upper end is inserted into the through hole 43 on both sides of the upper body 30. The screw rod 37 is screwed into the screw holes 44 on both sides of the receiving plate 34 to be connected.

[0037]

Effects of the Invention According to the inventions, a cable connecting a bypass connector on the power supply side wire at customer low pressure service entrance of connector, knife switch connecting the load side wire, switches, such as no-fuse breakers the uninterruptible bypass circuit is short-circuited to the power supply side of the load-side wire closing device for bypass connector in a bypass circuit to easily and reliably connected to the
Ru can be facility. Therefore , when replacing the power distribution equipment such as the meter disposed between the outlet connector of the low-voltage distribution line and the customer's drop switch, it is difficult to connect the bypass device to the meter, etc. It is possible to replace without breaking the power to the customer without damaging the sheathing or electric wires, and by providing an uninterruptible bypass circuit, the replacement work can be performed by removing the service line of the inlet connector and opening the switch. Since no voltage was applied to the section, work could be performed safely, quickly and reliably, and the service line itself could be replaced.

If the opening / closing device is a knife switch ,
By simply holding the knife switch hinge bracket between the hook-shaped sliding rod hook and contact bracket of the bypass connecting device for closing device, it can be easily and securely connected to the load side wire, and therefore the wire
The uninterruptible bypass path can be easily and reliably taken in the electric wires on the power supply side and the load side in combination with the connection bypass connection tool.

Further, the switching device is a no-fuse breaker.
In the case of ー , the load side electric wire is sandwiched by the lower body of the switchgear bypass connection device, the upper body is connected, and the contact fitting can easily contact the terminal connection portion of the load side electric wire,
Accordingly, the uninterruptible bypass path can be easily and reliably taken in the electric wires on the power supply side and the load side in combination with the electric wire connection bypass connector.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of an uninterruptible bypass connection device of the present invention.

FIG. 2 is a partially broken front view showing another embodiment.

FIG. 3 is an explanatory diagram of a state in which the uninterruptible bypass connection device of the present invention is used from a power supply side of a low-voltage distribution line to a load side of a drop switch.

FIG. 4 is a perspective view showing a bypass connector for a power supply side electric wire.

FIG. 5 is a front view of the same.

FIG. 6 is a rear view of the same.

FIG. 7 is a perspective view showing a bypass connector for a knife switch with a cover.

FIG. 8 is a perspective view of a contact fitting of the bypass connector.

FIG. 9 is a longitudinal sectional view of the same.

FIG. 10 is a perspective view showing a state in which a bypass connector is attached to a hinge fitting of a knife switch with a cover.

FIG. 11 is a partially cutaway front view showing a state in which a bypass connector is mounted on a hinge fitting of the knife switch with a cover removed.

FIG. 12 is an enlarged plan view of the main part.

FIG. 13 is a front perspective view showing a bypass connector for a no-fuse breaker.

FIG. 14 is a perspective view of the same back side.

FIG. 15 is a partially cutaway front view of an upper body and a lower body.

FIG. 16 is an enlarged vertical sectional view at the time of the same connection.

FIG. 17 is a perspective view showing a state in which the bypass connecting device is mounted on a terminal connecting portion of the no-fuse breaker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bypass connection tool 2 Bypass connection tool 2 'Bypass connection tool 3 Holding part 4 Operating shaft 5 Bypass wire connection part 6 Contact fitting 6' Contact fitting 7 Contact part 7 'Contact part 8 Bypass line connection part 8' Bypass line connection part 9 Working shaft 9 'Operation shaft 10 U-shaped conductor 11 Upper holding plate 12 Lower holding plate 20 Insulated body 21 Hook-shaped sliding rod 22 Link mechanism 30 Insulated upper body 31 Insulated lower body 32 Insertion hole 33 Opening 34 Receiving plate 35 Pressing plate 36 Fixing screw 37 Screw A Power supply side wire a Wire covering portion b Wire exposed portion A1 Drop-in wire A2 Load-side wire B Bypass wire C Switch c Hinge bracket d Terminal connection portion

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kiyoshi Furuhata 4207-1 Toyoshina Office, Toyoshina-cho, Minamiazumi-gun, Nagano Prefecture Chubu Electric Power Co., Inc. Toyoshina Sales Office No. 1-15 Inside Chubu Keiki Kogyo Co., Ltd. (72) Inventor Hitoshi Asano 1-115 Yada Minami, Higashi-ku, Nagoya City, Aichi Prefecture Inside Chubu Keiki Kogyo Co., Ltd. (72) Inventor Kazuhisa Nabeno 108 Matsukawadocho, Kasugai City, Aichi Prefecture Address Co., Ltd. Furukawa Electric Co., Ltd. Kasugai Factory (56) References Japanese Utility Model 3-60809 (JP, U) JP 47-5868 (JP, B1)

Claims (2)

(57) [Claims] 1. A power supply side electric wire (A) of a low voltage distribution line and a service line.
(A1) Power supply side electric wire (A) side electric wire at connection part
Connector for electric wire connection that can clamp and connect to the clamping part
(1) Connection of drop wire (A1) and load side electric wire (A2)
Can be connected to the connection part of the switchgear (C) for opening and closing the device
A bypass connection device for switchgear is provided, and low pressure
Bar that short-circuits the power supply side and load side, bypassing the distribution equipment
Bypass connector for wire connection and switchgear
Power supply side wire (A) and load side wire (A
2) Uninterruptible bypass connection device that can be connected to
As a bypass connection device for a switchgear , an insulated container (2
0), a contact fitting (6) having a contact portion (7) at the tip is fixed, and a hook-shaped sliding rod (21) is attached to the contact fitting (6).
The operating shaft (9) is connected to the base of the hook-shaped sliding rod (21) via a link mechanism (22) so as to be capable of converting a rotary motion into a forward / backward motion. A bypass line connecting portion (8) is provided at the base end of (6), and the hook-shaped sliding rod (21) advances and retreats with respect to the contact fitting (6) by rotating operation of the operating shaft (9). ) Bypass connection for switchgear allowing the hinge fitting (c) to be clamped
Uninterruptible bypass connection device provided with a tool (2) . 2. A power supply side electric wire (A) of a low voltage distribution line and a service line.
(A1) Power supply side electric wire (A) side electric wire at connection part
Connector for electric wire connection that can clamp and connect to the clamping part
(1) Connection of drop wire (A1) and load side electric wire (A2)
Can be connected to the connection part of the switchgear (C) for opening and closing the device
A bypass connection device for switchgear is provided, and low pressure
Bar that short-circuits the power supply side and load side, bypassing the distribution equipment
Bypass connector for wire connection and switchgear
Power supply side wire (A) and load side wire (A
2) Uninterruptible bypass connection device that can be connected to
Te, and the opening and closing device for a bypass fitting, opening the lower front provided with a plurality of insertion holes (32) (33)
Then, a contact fitting (6 ') having a contact part (7') at the lower part and a bypass line connecting part (8 ') at the upper part in an orthogonal shape is provided with the bypass line connecting part (8') at the insertion hole (32). An insulating upper body (30) provided so as to be movable in the vertical direction facing the opening (33), and provided so as to be able to move up and down by rotating the operation shaft (9 '); A receiving plate (34) for holding the wire crimping portion (e) of the load-side wire (A2) and a holding plate (3)
5) is provided with an insulative lower body (31) provided so as to be able to be tightened by tightening means (36) such as a screw, and the upper body (3) is provided.
0) is provided on the receiving plate (34) of the lower body (31) so as to be connectable by a connecting means (37) such as a screw, and the lower body (31) is provided.
Opening / closing in which the contact portion (7 ') of the contact fitting (6') of the upper body (30) is provided so as to be able to contact the terminal connection portion (d) of the load side electric wire (A2) with the breaker (C2) sandwiched between. Utensil
Uninterruptible bypass connection device provided with a bypass connection device (2 ') for use .