JP2006074855A - Jig for short circuit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a jig for a short circuit which can short-circuit four-phase hot-line side connecting sections. <P>SOLUTION: This jig is made in a shape of a plate which is equipped with two U-shaped members 45 inserted into two-phase hot-line side connecting sections aligning in its longitudinal direction and anti-open parts 45a of the U-shaped members 45 are coupled with each other by a coupling member 46. The U-shaped members 45 which are coupled with each other at the anti-open parts 45a are inserted from above into the four-phase hot-line side connecting sections, whereby the connecting sections are short-circuited, thus the four-phase hot-line side connecting sections are short-circuited easily and surely with each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a short-circuiting jig for short-circuiting a current test plug to be fitted to a test terminal provided on a switchboard or the like.

  For example, the switchboard is provided with a test terminal including a power supply side conductor of a power supply side device and an ammeter side conductor of an ammeter. Normally, the power supply side conductor and the ammeter side conductor are in an electrically connected state, and the ammeter is operated by the power from the power supply side conductor. When testing an ammeter, etc., the plug part of the test plug is inserted and fitted into the test terminal so that the power supply side conductor and the ammeter side conductor are not in electrical contact with each other and are not subject to the restraint of the power supply side device. To supply power to the ammeter from the power supply for inspection.

  The plug portion of the test plug includes a live wire side fitting portion (hot wire side conductor) connected to the power supply side conductor and a non-hot wire side fitting portion (non hot wire side conductor) connected to the ammeter side conductor. ) And are provided. The terminal part of the test plug is provided with a hot-wire side connection part connected to the hot-wire side fitting part and a non-hot-wire side connection part connected to the non-hot-wire side fitting part, and an ammeter test or the like is performed. In this case, electric power is supplied from the non-hot-wire side connection portion of the terminal portion (see, for example, Patent Document 1).

  The ammeter in the switchboard has, for example, a three-phase structure. The switchboard is provided with four-phase test terminals including the ground phase, and the test plug is also provided with four non-hot-wire side connection parts corresponding to the four phases. It has been. When an ammeter test is performed, a high voltage is generated when the circuit is in an open state, so it is necessary to short-circuit the hot wire side connection portion of the test plug corresponding to the four phases. For this reason, in the case of a test plug corresponding to four phases, four hot wire side connection parts are connected to each other using three metal short-circuit bars.

  Conventionally, since three shorting bars are used, it is necessary to prepare a plurality of (three) shorting bars corresponding to one test plug. It was the current situation. In addition, since a number of tightening operations are required, there is a risk that the shorting bar may fall off during the test if a loosening occurs. If the short-circuit bar falls off during the test and the short-circuit becomes insufficient, there is a risk that the circuit will be damaged.

Utility Model Registration No. 3081845

  The present invention has been made in view of the above-described circumstances, and provides a short-circuit jig capable of easily and surely short-circuiting a plurality of hot wire side connection portions of a test plug used in a current circuit. Objective.

A first aspect of the present invention that solves the above problems has a power supply side conductor connected to the power supply side terminal and an ammeter side conductor connected to the ammeter side terminal, the power supply side conductor, the ammeter side conductor, Is a short-circuiting jig for a test plug used in an ammeter circuit having a terminal member that is normally connected, and is inserted between the power supply side conductor and the ammeter side conductor of the terminal member. Thus, an insertion portion for electrically disconnecting the power supply side conductor and the ammeter side conductor is provided, and when the insertion portion is inserted between the power supply side conductor and the ammeter side conductor, the ammeter A non-live line side conductor connected to the side conductor, and a live line side conductor connected to the power supply side conductor when the insertion portion is inserted between the power supply side conductor and the ammeter side conductor, The non-live line side conductor is provided with a non-live line side connection part connected to an external circuit, respectively, The conductor is provided with a live line side connection part connected to an external circuit, a plurality of live line side connection parts are provided according to the phase of the power source, and the shorting jig is provided for each of the plurality of live line side connection parts. A short-circuiting jig comprising a single short-circuit member made of a conductor that is in contact with each other and short-circuits a plurality of hot-wire side connection portions.

  In such a first aspect, since the short-circuiting jig is composed of one short-circuit member, it is possible to short-circuit the hot-wire side connection parts of the plurality of phases with one short-circuiting jig, and there is no possibility of dropping due to loosening or the like. . For this reason, it becomes a short circuiting jig | tool which can short-circuit the some live wire side connection site | part of the test plug used for an electric current circuit easily and reliably.

  According to a second aspect of the present invention, in the first aspect, one short-circuit member includes a plurality of U-shaped U-shaped members inserted into a plurality of live-line-side connection sites, The short-circuiting jig is characterized by being formed in a plate shape in which the members are connected to each other.

  In the second aspect, the U-shaped members connected to each other at the opposite openings are inserted into the plurality of live line side connection parts from above, thereby easily and reliably short-circuiting the plurality of live line side connection parts. Is possible.

  According to a third aspect of the present invention, in the first aspect, one short-circuit member includes a plurality of U-shaped U-shaped members that are inserted into the plurality of live-line-side connection sites, and an opening of the U-shaped member; The short-circuiting jig is characterized in that it is formed in a plate shape in which the opposite opening is connected.

  In the third aspect, the U-shaped members connected to each other at the opening and the counter-opening are inserted from above into the plurality of live line side connection parts, thereby absorbing the position error of the plurality of live line side connection parts. It becomes possible to short-circuit easily and reliably in a state where it is easy to do.

  According to a fourth aspect of the present invention, in the first aspect, one short-circuit member includes a connecting bar extending radially in the same plane, and a fitting portion that fits into each of the plurality of live-line-side connection sites. A short-circuiting jig characterized in that it is formed in a plate shape provided at each end of a connecting bar.

  In the fourth aspect, the plurality of live wire side connection portions are easily and reliably short-circuited by rotating the connecting rods to simultaneously fit the fitting portions to the plurality of live wire side connection portions. It becomes possible. Moreover, by rotating the connecting rod, the fitting portions can be separated from the plurality of live line side connection portions all at once.

  According to a fifth aspect of the present invention, in the first aspect, one short-circuit member includes a single plate member, and the plate member is provided with through holes through which a plurality of live-line side connection portions pass, In the short-circuiting jig, the inner edge of each through hole comes into contact with the live line side connection portion by moving the member in the plane.

  In the fifth aspect, it is possible to extremely easily and reliably short-circuit the plurality of live wire side connection portions by moving the plate member and bringing the through holes into contact with the plurality of live wire side connection portions.

  According to a sixth aspect of the present invention, in the first aspect, one short-circuit member includes a plurality of bar members, and ends of the bar members are connected to each other so as to be rotatable with each other, and a plurality of live-line-side connection sites. The short-circuiting jig is characterized in that the connecting portion between the end portions is positioned at the position and the rod members are rotated in a state in which the rod member is disposed between the live wire side connection portions.

  In the sixth aspect, it is possible to easily and reliably short-circuit a plurality of live wire side connection portions by rotating the bars.

  According to a seventh aspect of the present invention, in the first aspect, the one short-circuit member is composed of a continuous member in which the conductive member is continuously arranged in a circumferential shape, and the continuous member is stretched over a plurality of live-line-side connection sites. It is in the jig | tool for short circuit characterized by these.

  In the seventh aspect, it is possible to easily and reliably short-circuit a plurality of live wire side connection sites by spanning the continuous member.

  According to an eighth aspect of the present invention, in the seventh aspect, the continuous member is composed of a plurality of conductors that are respectively fitted to the hot-wire side connection sites, and the plurality of conductors are plural by holding rings that expand and contract in the circumferential direction. A short-circuiting jig characterized by being in contact with each of the live wire side connection portions and being continuously in a circumferential shape.

  In the eighth aspect, it is possible to easily and surely short-circuit the plurality of live-line-side connection parts by bringing the plurality of conductors into a continuous state by the retaining ring and bringing them into contact with the live-line-side connection parts. become.

  A ninth aspect of the present invention is the shorting jig according to the seventh aspect, wherein the continuous member is configured such that the circumferential conductor is elastically deformed in the circumferential direction.

  In the ninth aspect, it is possible to easily and surely short-circuit the plurality of live wire side connection portions by elastically deforming the circumferential conductor and bringing it into contact with the live wire side connection portions. .

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the shorting jig | tool which can short-circuit a some hot wire side connection site | part easily and reliably.

  Hereinafter, the present invention will be described in detail based on embodiments.

  A test plug in which the short-circuiting jig of the present invention is used and a test terminal portion of a switchboard to which the test plug is mounted will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing the overall configuration before the test plug is attached, FIG. 2 is a cross-sectional view showing the overall configuration when the test plug is attached, and FIG. 3 is a plan view of the test plug. 4 shows a front view of the test plug. FIG. 5 shows a schematic system of the current circuit.

The test terminal 11 of the switchboard 1 is demonstrated based on FIG. 1, FIG.
The test terminal 11 is composed of an insulator member 10, an ammeter side terminal 3 to which the ammeter 2 is connected is provided on the insulator member 10, and a power source side terminal 5 to which the power source side device 4 is connected is an insulator member. 10 is provided. The insulator member 10 is provided with an ammeter side conductor 6 and a power source side conductor 7, the ammeter side conductor 6 is connected to the ammeter side terminal 3, and the power source side conductor 7 is connected to the power source side terminal 5. The ammeter side conductor 6 and the power source side conductor 7 are always in contact with each other in the test terminal 11 due to the elastic force of the conductor. The switchboard 1 is provided with a plurality of (for example, four) test terminals 11 in parallel, and an ammeter 2 composed of a plurality of phases (four phases) is connected thereto.

  By inserting a test plug insertion portion (described later) between the ammeter side conductor 6 and the power supply side conductor 7 of the test terminal 11, the ammeter side conductor 6 and the power supply side conductor 7 are elastic as shown in FIG. The electric connection between the ammeter 2 and the power supply side device 4 becomes irrelevant by being brought into a non-contact state against the force.

The test plug 21 will be described with reference to FIGS.
A plurality of (for example, four) plug-side terminal portions 23 are provided on the front surface side of the support 22 in a state of being arranged vertically and horizontally, and insertion portions corresponding to the plug-side terminal portions 23 are provided on the rear surface side of the support 22. 24 are provided in parallel.

  The insertion portion 24 is provided with a non-live wire side conductor 26 on the upper side of the plate-like insulating portion 25, and with a live wire side conductor 27 on the lower side of the insulating portion 25. The non-live wire side conductor 26 and the live wire side conductor 27 are provided in the insulating portion 25 in an insulated state, and these are integrally supported by the support body 22. When the insertion portion 24 is inserted between the ammeter side conductor 6 and the power source side conductor 7, the ammeter side conductor 6 is connected to the non-hot wire side conductor 26 and the power source side conductor 7 is connected to the hot wire side conductor. 27.

  In order to enable connection of the non-live line side conductor 26 and the live line side conductor 27 to an external circuit, the other end portions of the non-live line side conductor 26 and the live line side conductor 27 extend to the front side of the support 22. A plug-side terminal portion 23 is provided.

  The front side of the non-live wire side conductor 26 is an axial non-live line side connection portion 31, and the front side of the live wire side conductor 27 is a live line side connection surrounding the outer periphery of the non-live line side connection portion 31. It is set as the site | part 32, and the non-hot-wire side connection site | part 31 protrudes in the front side. A nut 33 is screwed to the tip of the non-hot wire side connection portion 31, a nut 34 is screwed to the outer periphery of the live wire side conductor 27, and the tip portion of the live wire side conductor 27 (the nut 33 and the nut 34 is A nut 35 is screwed onto the outer periphery of the non-hot-wire side connection part 31. An external circuit (power supply for inspection) 36 is connected to the non-hot-wire side connection portion 31 between the nut 33 and the nut 35, and an external circuit (not shown) is connected to the live-wire side conductor 27 between the nut 34 and the nut 35. .

  As shown in FIG. 5, the circuit system of the ammeter side system of the switchboard 1 and the test plug 21 has a three-phase ammeter side conductor 6 connected to one end of the ammeter 2 and a one-phase ammeter side conductor. 6 and the other end of the ammeter 2 are connected to the ground 8 side.

  When the inspection or the like is not performed, the test plug 21 is not fitted to the test terminal 11 (the state shown in FIG. 1), the power source side conductor 7 and the ammeter side conductor 6 are connected, and the current from the power source side device 4 is current. Total 2 operates.

  When carrying out inspection or the like, the insertion part 24 of the test plug 21 is inserted into the test terminal 11 (state shown in FIG. 2). By inserting the insertion portion 24 into the test terminal 11, the insertion portion 24 is inserted between the ammeter side conductor 6 and the power source side conductor 7, and the ammeter side conductor 6 is connected to the non-live line side conductor 26. At the same time, the power source side conductor 7 is connected to the hot wire side conductor 27. That is, the ammeter side conductor 6 and the power source side conductor 7 are brought into a non-contact state, and the electrical connection between the ammeter 2 and the power source side device 4 becomes irrelevant.

  In this state, the inspection power source 36 is connected to the non-hot-wire side connection portion 31 between the nut 33 and the nut 35 of the plug-side terminal portion 23. As a result, the inspection power source 36 is electrically connected to the ammeter 2 through the non-live wire side conductor 26 and the ammeter side conductor 6, and the current test of the ammeter 2 is performed.

  At this time, if the four-phase hot wire side connection part 32 is opened, a high voltage is generated between the phases, so that the short-circuit jig 41 is mounted over the four-phase hot wire side connection part 32 and the live line side connection is made. The part 32 is short-circuited. The short-circuiting jig 41 is composed of a single short-circuit member made of a conductor that contacts each of the four-phase hot-wire side connection parts 32 and short-circuits the four-phase hot-wire side connection parts 32. For this reason, it becomes the short circuit jig | tool 41 which can short-circuit the several hot wire side connection part 32 of the test plug 21 used for an electric current circuit easily and reliably.

  Hereinafter, the short-circuiting jig of the present invention will be specifically described.

(Embodiment 1)
A short-circuiting jig 41 according to the first embodiment of the present invention will be described with reference to FIGS.
FIG. 6 shows a front view of the shorting jig 41 according to the first embodiment of the present invention, and FIG. 7 shows a front view of the test plug with the shorting jig 41 attached thereto.

  As shown in the figure, a short-circuiting jig 41 composed of a single short-circuit member made of a conductor (made of metal) is U-shaped inserted into a two-phase non-hot-wire side connection region 31 arranged in the vertical direction. The U-shaped members 45 are formed in a plate shape in which the opposite opening portions 45 a of the U-shaped member 45 are connected to each other by a connecting material 46.

  As shown in FIG. 7, the U-shaped members 45 connected to each other at the opposite openings 45 a are inserted into the four-phase hot wire side connection portion 32 from above to short-circuit the four-phase hot wire side connection portion 32. It will be in the state.

  For this reason, it becomes possible to short-circuit the 4-phase hot wire side connection part 32 easily and reliably.

(Embodiment 2)
A short-circuiting jig 51 according to the second embodiment of the present invention will be described with reference to FIGS.
FIG. 8 shows a front view of the short-circuiting jig 51 according to the second embodiment of the present invention, and FIG. 9 shows a front view of the test plug with the short-circuiting jig 51 attached.

  As shown in the figure, a short-circuiting jig 51 composed of a single short-circuit member made of a conductor (made of metal) is a U-shaped insert inserted into a two-phase hot wire side connection portion 32 arranged in the vertical direction. Two U-shaped members 52 are provided, and an opening 52 a of one U-shaped member 52 and an opposite opening 52 b of the other U-shaped member 52 are formed in a plate shape connected by a connecting member 53. Since the opening 52a and the counter opening 52b are connected to the short-circuiting jig 51, the opening of the U-shaped member 52 can be oriented in an arbitrary direction.

  As shown in FIG. 9, a U-shaped member 52 in which an opening 52a and an opposite opening 52b are connected by a connecting member 53 is inserted into a four-phase live wire side connection portion 32 from above, thereby providing a four-phase active. The line side connection part 32 will be in the state short-circuited.

  For this reason, it is possible to easily and reliably short-circuit the four-phase hot wire side connection portion 32 in a state in which the position error is easily absorbed.

(Embodiment 3)
A short-circuiting jig 55 according to a third embodiment of the present invention will be described with reference to FIGS.
FIG. 10 shows a front view of the short-circuiting jig 55 according to the third embodiment of the present invention, and FIG. 11 shows a front view of the test plug with the short-circuiting jig 55 attached.

  As shown in the figure, a short-circuiting jig 55 composed of one short-circuit member made of a conductor (made of metal) includes connecting rods 56 extending radially in four directions within the same plane, and each connecting rod At the tip of 56, a fitting portion 57 that is fitted to each of the four-phase hot wire side connection portions 32 is provided and formed in a plate shape.

  By attaching the short-circuiting jig 55 to the test plug 21 and rotating the connecting bar 56, the fitting portions 57 are simultaneously fitted to the four-phase hot wire side connection portions 32. Further, by rotating the connecting bar 56 in the reverse direction, the fitting portions 57 can be separated from the four-phase live wire side connection site 32 all at once.

  For this reason, it becomes possible to short-circuit the 4-phase hot wire side connection part 32 easily and reliably. In addition, since the fitting portions 57 can be simultaneously released from the four-phase live line side connection portion 32 by rotating the connecting rod 56, the short circuit state and the non-short circuit can be maintained with the short circuit jig 55 attached. State.

(Embodiment 4)
A short-circuiting jig 61 according to a fourth embodiment of the present invention will be described with reference to FIGS.
FIG. 12 shows a front view of the short-circuiting jig 61 according to the fourth embodiment of the present invention, and FIG. 13 shows a front view of the test plug with the short-circuiting jig 61 attached.

  As shown in the figure, a short-circuiting jig 61 composed of a single short-circuit member made of a conductor (made of metal) is composed of a single plate member 62, and the plate member 62 has a four-phase hot wire side. A through hole 63 through which the connection site 32 passes is provided.

  As shown in FIG. 13 (a), the plate member 62 is attached to the test plug 21 with the through-hole 63 passing through the four-phase hot wire side connection portion 32, and as shown in FIG. 13 (b), the plate member By moving 62 in the plane, the inner edge of each through hole 63 is brought into contact with the hot wire side connection site 32. As a result, the four-phase hot wire side connection portion 32 is short-circuited.

  For this reason, it becomes possible to short-circuit the four-phase hot wire side connection part 32 very easily and reliably.

(Embodiment 5)
A short-circuiting jig 65 according to a fifth embodiment of the present invention will be described with reference to FIGS.
FIG. 14 shows a front view of the short-circuiting jig 65 according to the fifth embodiment of the present invention, and FIG. 15 shows a front view of the test plug with the short-circuiting jig 65 attached.

  As shown in the figure, a short-circuiting jig 65 composed of one short-circuit member made of a conductor (made of metal) includes three bar members 66, and end portions 66a of the bar members 66 rotate with respect to each other. Connected freely.

  As shown in FIG. 15, a bar 66 in the middle is placed on the two phases above the four-phase hot wire side connection portion 32, and the bars 66 on both sides are rotated downward by rotating the bars 66 on both sides downward. It will be in the state arranged between line side connection parts 32. As a result, the four-phase hot wire side connection portion 32 is short-circuited.

  For this reason, it is possible to easily and reliably short-circuit the four-phase hot wire side connection portion 32 by rotating the rods 66.

(Embodiment 6)
A short-circuiting jig 71 according to a sixth embodiment of the present invention will be described with reference to FIGS.
FIG. 16 is a front view of a short-circuiting jig 71 according to the sixth embodiment of the present invention, FIG. 17 is a diagram illustrating the structure of the expansion / contraction member, and FIG. 18 is a test plug with the short-circuiting jig 71 attached thereto. Front view is shown.

  As shown in FIG. 16, one short-circuit member constituting the short-circuit jig 71 includes four conductive members 72 formed of L-shaped plate members, and the conductive members 72 are continuously connected in a circumferential shape to form a rectangular frame. A continuous member 73 is formed. The outside of the continuous member 73 is held by a rectangular frame-shaped holding ring 74. The holding ring 74 has a rectangular frame shape in which four elastic members 75 are connected by an L-shaped plate material 76 of an insulator, and the conductive members 72 are arranged at the four corners of the holding ring 74 in a state where the elastic members 75 are extended. By contracting the expansion / contraction member 75, the conductive member 72 is continued in a circumferential shape.

  As shown in FIG. 17A, the elastic member 75 can be configured to expand and contract, and as shown in FIG. 17B, the two members 75a and 75b are slidably fitted to each other. In addition, as shown in FIG. 17C, a configuration in which the two members 75a and 75b are slidably fitted to each other and urged in the contracting direction by the spring 77 is possible. .

  As shown in FIG. 18A, the conductive member 72 is attached to the test plug 21 by placing the conductive member 72 at the four corners of the holding ring 74 in a state in which the elastic member 75 is extended, and the conductive member 72 is contracted by contracting the elastic member 75. The conductive members 72 that are continuous in a circumferential shape are brought into contact with the four-phase live wire side connection portions 32, respectively. As a result, the four-phase hot wire side connection portion 32 is short-circuited.

  For this reason, it is possible to easily and reliably short-circuit the four-phase non-hot-wire side connection portion 31 by passing the conductive member 72 made continuous by the holding ring 74.

(Embodiment 7)
A short-circuiting jig 81 according to a seventh embodiment of the present invention will be described based on FIG.
FIG. 19 shows a front view of the test plug with the short-circuiting jig 81 according to the seventh embodiment of the present invention attached.

  The short-circuit member constituting the short-circuiting jig 81 is configured such that an annular conductor 78 can be elastically deformed in the circumferential direction. As shown in FIG. 19A, the conductor 78 is elastically deformed to the extension side and attached to the test plug 21, and the conductor 78 is elastically deformed to the contraction side over the four-phase non-hot wire side connection portion 31. Thus, the circumferential conductor 78 is wound around and contacted with the hot wire side connection portion 32. This short-circuits the four-phase hot wire side connection portion 32.

  For this reason, it becomes possible to elastically deform the circumferential conductor 78 and to short-circuit the four-phase hot wire side connection portion 32 easily and reliably.

  INDUSTRIAL APPLICATION This invention can be utilized in the technical field of the jig | tool for the short circuit of the current circuit which can short-circuit several hot wire side connection site | parts easily and reliably.

It is sectional drawing showing the whole structure of the state before mounting | wearing with a test plug. It is sectional drawing showing the whole structure of the state with which the test plug is mounted | worn. It is a top view of a test plug. It is a front view of a test plug. It is a schematic system diagram of a current circuit. It is a front view of the jig | tool 41 for a short circuit which concerns on the example of 1st Embodiment of this invention. It is a front view of the test plug in a state where the shorting jig 41 is mounted. It is a front view of the jig | tool 51 for a short circuit which concerns on the 2nd Example of this invention. It is a front view of the test plug in the state where the shorting jig 51 is mounted. It is a front view of the short-circuiting jig 55 according to the third embodiment of the present invention. It is a front view of a test plug in a state where a shorting jig 55 is mounted. It is a front view of the jig 61 for short circuit concerning the example of a 4th embodiment of the present invention. It is a front view of a test plug in a state where a shorting jig 61 is mounted. It is a front view of the short circuiting jig 65 according to the fifth embodiment of the present invention. It is a front view of a test plug in a state where a shorting jig 65 is mounted. It is a front view of the jig | tool 71 for a short circuit which concerns on the 6th Example of this invention. It is structure explanatory drawing of an expansion-contraction member. It is a front view of a test plug in a state where a shorting jig 71 is mounted. It is a front view of the test plug of the state which mounted | wore with the shorting jig | tool 81 concerning the example of 7th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Distribution board 2 Ammeter 3 Ammeter side terminal 4 Power supply side apparatus 5 Power supply side terminal 6 Ammeter side conductor 7 Power supply side conductor 10 Insulator member 11 Test terminal 21 Test plug 22 Support body 23 Plug side terminal part 24 Insertion part 25 Insulation Part 26 Non-live line side conductor 27 Live line side conductor 31 Non-live line side connection part 32 Live line side connection part 33, 34, 35 Nut 36 External circuit (power supply for inspection)
41, 51, 55, 61, 65, 71, 81 Short-circuiting jig 45, 52 U-shaped member 46, 53 Connecting material 56 Connecting rod 57 Fitting portion 62 Plate member 63 Through hole 66 Bar 72 Conductive member 73 Continuous Member 74 Holding ring 75 Stretchable member 78 Conductor

Claims (9)

An ammeter circuit having a power supply side conductor connected to the power supply side terminal and an ammeter side conductor connected to the ammeter side terminal, and a terminal member in which the power supply side conductor and the ammeter side conductor are always connected A test plug short-circuiting jig used for
The test plug
An insertion portion is provided to electrically disconnect the power supply side conductor and the ammeter side conductor by being inserted between the power supply side conductor and the ammeter side conductor of the terminal member,
When the insertion portion is inserted between the power supply side conductor and the ammeter side conductor, the non-live wire side conductor connected to the ammeter side conductor;
When the insertion portion is inserted between the power supply side conductor and the ammeter side conductor, a hot wire side conductor connected to the power supply side conductor is provided,
The non-live line side conductor is provided with a non-live line side connection part connected to the external circuit, and the live line side conductor is provided with a live line side connection part connected to the external circuit, respectively.
Depending on the phase of the power source, there are multiple hot-wire side connection sites,
The shorting jig is
A short-circuiting jig comprising a single short-circuit member made of a conductor that contacts each of a plurality of live-wire-side connection sites and short-circuits the plurality of live-wire-side connection sites. In Claim 1, one short circuit member is provided with two or more U-shaped U-shaped members inserted in a plurality of live line side connection parts, and is formed in the plate shape where the counter opening parts of U-shaped members were connected. A short-circuiting jig characterized by that. In Claim 1, one short circuit member is provided with two or more U-shaped U-shaped members inserted in a plurality of live line side connection parts, and is formed in the shape of a plate in which the opening of the U-shaped member and the opposite opening are connected. A short-circuiting jig which is formed. In Claim 1, one short circuit member is provided with the connection bar material extended radially within the same plane, and the fitting part which respectively fits to a plurality of hot wire side connection parts was provided in the tip of the connection bar material, respectively. A short-circuiting jig characterized by being formed in a plate shape. In Claim 1, each short-circuit member includes a single plate member, and the plate member is provided with through holes through which a plurality of live wire side connection portions pass, and each plate member is moved in the plane. A short-circuiting jig characterized in that the inner edge of the through-hole is in contact with the live wire side connection site. In Claim 1, one short circuit member is provided with a plurality of bar materials, ends of the bar members are connected to each other so as to be rotatable, and a connection part between the end parts is provided at the positions of the plurality of live line side connection sites. A jig for short-circuiting, characterized in that the bars are rotated so that the bars are positioned and disposed between the live-wire-side connection sites. 2. The short-circuiting jig according to claim 1, wherein the one short-circuit member is constituted by a continuous member in which the conductive member is continuous in a circumferential shape, and the continuous member is stretched over a plurality of live-line-side connection sites. 8. The continuous member according to claim 7, wherein the continuous member is configured by a plurality of conductors that are respectively fitted to the live line side connection portions, and the plurality of conductors are respectively brought into contact with the plurality of live line side connection portions by holding rings that expand and contract in the circumferential direction. And a short-circuiting jig characterized in that it is in a circumferentially continuous state. 8. The short-circuiting jig according to claim 7, wherein the continuous member is configured such that the circumferential conductor is elastically deformed in the circumferential direction.

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