Wiring verification device

Abstract

To realize a wiring verification device that enables simpler wiring inspection. [Solution] With this wiring confirmation device 100, the seven electrodes 10 of the wiring confirmation device 100 are connected to the seven terminal boards 88 of the check terminal 90 to which the high-voltage meter 3 is connected, the wiring confirmation device 100 is attached to the check terminal 90, and the switch 13 of the wiring confirmation device 100 is operated to check the illumination / non-illumination pattern of the seven light-emitting parts 11 while the wiring confirmation device 100 and the high-voltage meter 3 are energized. This simple operation allows for confirmation of whether there are any incorrect connections or contacts in the wiring between the high-voltage meter 3 and the check terminal 90, making wiring inspection simpler than with conventional technology.

Description

Technical Field

[0001] The present invention relates to a connection confirmation device.

Background Art

[0002] High-voltage power receiving equipment is equipped with a high-voltage meter for measuring the amount of electricity. The high-voltage meter is installed, for example, in a cubicle-type high-voltage power receiving equipment (hereinafter referred to as a cubicle). A check terminal is installed in the cubicle, and a high-voltage meter and a transformer are connected to the check terminal.

[0003] The high-voltage meter is obliged to be replaced every predetermined period according to the measurement law. After completing the work of replacing the high-voltage meter, a connection inspection is performed to check whether there is an incorrect connection to the high-voltage meter connected to the check terminal. For example, there is known a system for determining the quality of a connection based on image data obtained by photographing the site where the replacement work of the high-voltage meter was performed (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the case of the connection inspection of Patent Document 1 described above, it is possible to perform the connection inspection if there are two work steps: photographing the site where the high-voltage meter was replaced and importing the photographed image data into the system. However, there is a demand from on-site workers for a technology that can perform a simpler connection inspection.

[0006] The objective of the present invention is to provide a wiring verification device that enables simpler wiring inspection. [Means for solving the problem]

[0007] To solve the above problems, the invention described in claim 1 is: A connection confirmation device for confirming the connection status between a high-voltage meter and a check terminal, which is attached to a check terminal having multiple terminals connected to multiple meter terminals of a high-voltage meter, The wiring confirmation device comprises a circuit in which a plurality of electrodes, each connected to the plurality of terminals, a plurality of light-emitting units corresponding to each of the plurality of electrodes, and a power supply for supplying current to the high-voltage meter via at least one of the plurality of electrodes are electrically connected. The device is characterized in that the multiple electrodes are connected to the multiple terminals, and the connection status between the high-voltage meter and the check terminal can be confirmed according to the illumination / non-illumination pattern of the multiple light-emitting parts when the connection confirmation device and the high-voltage meter are energized.

[0008] The invention described in claim 2 is a wiring confirmation device according to claim 1, The plurality of measuring instrument terminals include current-side measuring instrument terminals connected to the current circuit of the high-voltage measuring instrument, and voltage-side measuring instrument terminals connected to the voltage circuit of the high-voltage measuring instrument. The check terminal has a plurality of terminals arranged in a predetermined order, including a current-side terminal corresponding to the current-side metering terminal and a voltage-side terminal corresponding to the voltage-side metering terminal. The wiring confirmation device is characterized by being configured to energize the wiring confirmation device and the high-voltage meter by passing current from the electrode connected to the current-side terminal to the high-voltage meter.

[0009] The invention described in claim 3 is a wiring confirmation device according to claim 1 or 2, Each of the plurality of electrodes is characterized by having a pair of leaf spring members that clamp the plurality of terminals.

[0010] The invention described in claim 4 is a wiring confirmation device described in claim 3, The pair of leaf spring members are formed such that at least a portion of them is spaced narrower than the thickness of the terminal, and the tips of the pair of leaf spring members are formed so that they are spaced wider than the thickness of the terminal. [Effects of the Invention]

[0011] According to the present invention, it becomes possible to perform wiring inspection more simply. [Brief explanation of the drawing]

[0012] [Figure 1] This is an explanatory diagram showing the configuration of the wiring verification device of this embodiment and the check terminal to which the wiring verification device is to be attached. [Figure 2] Figure 2(a) shows a front view of the check terminal, Figure 2(a) shows a cross-sectional view along line BB, and Figure 2(a) shows a cross-sectional view along line CC. [Figure 3] Figure 3(a) shows a front view of the wiring confirmation device of this embodiment, Figure 3(a) shows a side view from the side of arrow B, and Figure 3(a) shows a side view from the side of arrow C. [Figure 4] This is an explanatory diagram showing an example of the electrical circuit of the wiring confirmation device of this embodiment. [Figure 5] This is a side view showing a wiring verification device positioned opposite a check terminal. [Figure 6] This is a front view showing the wiring confirmation device attached to the check terminal. [Figure 7] This is a side view showing the wiring confirmation device attached to the check terminal. [Figure 8] This is a side view from below showing the wiring confirmation device attached to the check terminal. [Figure 9]It is an explanatory diagram of a mode for confirming the connection state between a high-pressure meter and a check terminal by a connection confirmation device attached to the check terminal. [Figure 10] It is an explanatory diagram showing the circuit configuration of the connection confirmation device and the high-pressure meter in FIG. 9, and the lighting patterns of the seven light-emitting parts of the connection confirmation device. [Figure 11] It is an explanatory diagram of a mode for confirming the connection state between a high-pressure meter and a check terminal by a connection confirmation device attached to the check terminal. [Figure 12] It is an explanatory diagram showing the circuit configuration of the connection confirmation device and the high-pressure meter in FIG. 11, and the lighting patterns of the seven light-emitting parts of the connection confirmation device. [Figure 13] It is an explanatory diagram showing an example of the lighting patterns of the seven light-emitting parts of the connection confirmation device. [Figure 14] It is an explanatory diagram showing an example of the lighting patterns of the seven light-emitting parts of the connection confirmation device. [Figure 15] It is an explanatory diagram showing an example of the lighting patterns of the seven light-emitting parts of the connection confirmation device. [Figure 16] It is an explanatory diagram showing an example of the lighting patterns of the seven light-emitting parts of the connection confirmation device. [Figure 17] It is an explanatory diagram showing an example of the lighting patterns of the seven light-emitting parts of the connection confirmation device. [Figure 18] It is an explanatory diagram showing an example of the lighting patterns of the seven light-emitting parts of the connection confirmation device. [Figure 19] It is an explanatory diagram showing an example of the lighting patterns of the seven light-emitting parts of the connection confirmation device. [Figure 20] It is an explanatory diagram showing an example of the lighting patterns of the seven light-emitting parts of the connection confirmation device. [Figure 21] It is an explanatory diagram showing an example of the lighting patterns of the seven light-emitting parts of the connection confirmation device. [Figure 22] It is an explanatory diagram showing an example of the lighting patterns of the seven light-emitting parts of the connection confirmation device. [Figure 23] It is an explanatory diagram showing an example of the lighting patterns of the seven light-emitting parts of the connection confirmation device. [Modes for carrying out the invention]

[0013] Hereinafter, embodiments of the wiring confirmation device according to the present invention will be described in detail with reference to the drawings. However, the embodiments described below are subject to various technically preferred limitations for carrying out the present invention, but the scope of the present invention is not limited to the following embodiments and illustrated examples.

[0014] Figure 1 is an explanatory diagram showing the wiring confirmation device 100 according to the present invention and the check terminal 90 to which the wiring confirmation device 100 is to be attached. The check terminal 90 is connected between the transformer 2 and the high-voltage meter 3.

[0015] The wiring confirmation device 100 according to the present invention is used to confirm the wiring status between the high-voltage meter 3 and the check terminal 90 after the high-voltage meter 3 has been replaced. The wiring confirmation device 100 is equipped with multiple electrodes (electrodes 10, described later) that correspond to multiple terminals (terminal board 88, described later) provided on the check terminal 90. By connecting the multiple electrodes 10 to the multiple terminals (terminal board 88), the wiring confirmation device 100 is electrically connected to the check terminal 90, and the wiring confirmation device 100 and the high-voltage meter 3 are electrically connected via the check terminal 90.

[0016] First, let's explain the configuration of Check Terminal 90. The check terminal 90 includes, for example, a terminal section 80 to which the transformer 2 and the high-voltage meter 3 are connected, a circuit board 70 on which the terminal section 80 is mounted, and an outer casing 60 for housing the circuit board 70 on which the terminal section 80 is mounted.

[0017] The outer box 60 is, for example, a molded body made of ABS resin, and has a flat plate portion that is roughly rectangular in shape and a frame portion in which the periphery of the flat plate portion is erected. The substrate 70 is a rectangular flat plate made of resin material and is used as a mounting base for the terminal portion 80.

[0018] The terminal section 80 comprises a plurality of terminal boards 88 mounted on the substrate 70, and includes a transformer terminal section 81 provided on one end (left side) of the terminal board 88, a metering terminal section 82 provided on the other end (right side) of the terminal board 88, and a connector 83 provided in the center of the terminal board 88. In this embodiment, the electrode 10 of the wiring confirmation device 100, which will be described later, is connected to the meter side (meter terminal section 82 side) of the terminal board 88.

[0019] The terminal board 88 is an elongated plate-shaped member made of metal, and its lower surface is attached to the substrate 70 via a connecting member. In this embodiment, seven terminal boards 88 are used, and the seven terminal boards 88 are arranged on the substrate 70 at predetermined intervals. The seven terminal boards 88 here consist of three voltage-side terminal boards 88 and four current-side terminal boards 88. Specifically, in Figures 2(a) and 2(b), terminal boards 88 corresponding to "1S" on the current side, terminal board 88 corresponding to "P1" on the voltage side, terminal board 88 corresponding to "P3" on the voltage side, terminal board 88 corresponding to "3S" on the current side, terminal board 88 corresponding to "3L" on the current side, terminal board 88 corresponding to "P2" on the voltage side, and terminal board 88 corresponding to "1L" on the current side are arranged at predetermined intervals from top to bottom. In this way, the check terminal 90 has multiple (seven) terminal boards 88, including voltage-side terminal boards 88 (P1, P3, P2) and current-side terminal boards 88 (1S, 3S, 3L, 1L), arranged in a predetermined order. As will be described later, the voltage-side terminal board 88 is connected to the voltage-side lead wires (2a, 3a) of the transformer 2 and the high-voltage meter 3, and the current-side terminal board 88 is connected to the current-side lead wires (2a, 3a) of the transformer 2 and the high-voltage meter 3.

[0020] The transformer terminal section 81 has two screws N screwed into the upper surface of one end (left side) of the terminal plate 88. As shown in Figure 2(c), an insertion hole 81a is provided on one end face (left end face) of the terminal plate 88 for inserting the tip of the lead wire 2a connected to the transformer 2. The tip of the lead wire 2a inserted into the insertion hole 81a is tightened and fixed by a screw N. In this way, the transformer terminal section 81 and the lead wire 2a of the transformer 2 are electrically connected. The seven lead wires 2a of the transformer 2 include three voltage-side lead wires 2a and four current-side lead wires 2a. The voltage-side lead wires 2a are connected to terminal boards 88 (transformer terminal section 81) corresponding to the voltage side, and the current-side lead wires 2a are connected to terminal boards 88 (transformer terminal section 81) corresponding to the current side.

[0021] Furthermore, the transformer terminal section 81 is provided with alternative terminals 50 for connecting alternative measuring devices. The replacement meter is attached to the check terminal 90 to perform measurements in place of the high-voltage meter 3, which is temporarily removed from the check terminal 90 when an old high-voltage meter is replaced with a new high-voltage meter. The replacement terminal 50 is made of a conductive material and has a terminal body 51 erected on the upper surface of the terminal board 88, and a fixing screw 52 made of an insulating material and screwed into the upper part of the terminal body 51. The terminal body 51 is provided with an insertion hole 51a for inserting lead wires or plugs, and the tip of the lead wire or plug inserted into the insertion hole 51a is tightened by a fixing screw 52 to fix it to the terminal body 51. In this embodiment, as shown in Figure 2(a), the following terminals are provided in order from top to bottom: a current-side replacement terminal 50 corresponding to "1S", a voltage-side replacement terminal 50 corresponding to "P1", a voltage-side replacement terminal 50 corresponding to "P3", a current-side replacement terminal 50 corresponding to "3S", a current-side replacement terminal 50 corresponding to "3L", a voltage-side replacement terminal 50 corresponding to "P2", and a current-side replacement terminal 50 corresponding to "1L". Thus, the check terminal 90 has multiple (seven) alternative terminals 50 arranged in a predetermined order, including alternative terminals 50 on the voltage side (P1, P3, P2) and alternative terminals 50 on the current side (1S, 3S, 3L, 1L).

[0022] The terminal section 82 for the measuring instrument has two screws N screwed into the upper surface of the other end (right side) of the terminal plate 88. As shown in Figures 2(b) and 2(c), an insertion hole 82a is provided on the other end face (right end face) of the terminal board 88 for inserting the tip of the lead wire 3a of the high-voltage meter 3. The tip of the lead wire 3a inserted into the insertion hole 82a is tightened and fixed by a screw N. In this way, the terminal section 82 for the meter and the lead wire 3a of the high-voltage meter 3 are electrically connected. The high-voltage meter 3 has seven lead wires 3a, which include three voltage-side lead wires 3a and four current-side lead wires 3a. The voltage-side lead wires 3a are connected to terminal boards 88 (meter terminal section 82) that correspond to the voltage side, and the current-side lead wires 3a are connected to terminal boards 88 (meter terminal section 82) that correspond to the current side.

[0023] Specifically, as shown in Figure 1, the high-voltage meter 3 has seven meter terminals 30, and seven lead wires 3a connected to each of the seven meter terminals 30. In this embodiment, as shown in Figure 1, the following terminals are provided from left to right: a current-side meter terminal 30 corresponding to "1S", a voltage-side meter terminal 30 corresponding to "P1", a voltage-side meter terminal 30 corresponding to "P3", a current-side meter terminal 30 corresponding to "3S", a current-side meter terminal 30 corresponding to "3L", a voltage-side meter terminal 30 corresponding to "P2", and a current-side meter terminal 30 corresponding to "1L". Thus, the high-voltage meter 3 has multiple (seven) meter terminals 30 arranged in a predetermined order, including voltage-side meter terminals 30 (P1, P3, P2) and current-side meter terminals 30 (1S, 3S, 3L, 1L). One end of the lead wire 3a for "1S" is connected to the meter terminal 30 corresponding to "1S", and the other end of the lead wire 3a is connected to the terminal board 88 corresponding to "1S". Similarly, one end of each lead wire 3a labeled "P1", "P3", "3S", "3L", "P2", and "1L" is connected to the corresponding measuring instrument terminal 30, and the other end is connected to the corresponding terminal board 88. When replacing the high-voltage meter 3, one end of each lead wire 3a is disconnected from the meter terminal 30 of the old high-voltage meter and connected to the meter terminal 30 of the new high-voltage meter.

[0024] Furthermore, the terminal section 82 for the measuring instrument is provided with a test terminal 40 having a structure similar to that of the replacement terminal 50. The test terminal 40 is made of a conductive material and has a terminal body 41 erected on the upper surface of the terminal plate 88, and a fixing screw 42 made of an insulating material that is screwed into the upper part of the terminal body 41. The terminal body 41 is provided with an insertion hole 41a for inserting lead wires or plugs, and the tip of the lead wire or plug inserted into the insertion hole 41a is tightened by a fixing screw 42 to fix it to the terminal body 41. In this embodiment, as shown in Figure 2(a), the following test terminals are provided in order from top to bottom: a current-side test terminal 40 corresponding to "1S", a voltage-side test terminal 40 corresponding to "P1", a voltage-side test terminal 40 corresponding to "P3", a current-side test terminal 40 corresponding to "3S", a current-side test terminal 40 corresponding to "3L", a voltage-side test terminal 40 corresponding to "P2", and a current-side test terminal 40 corresponding to "1L". As described above, the check terminal 90 has multiple (seven) test terminals 40 arranged in a predetermined order, including voltage-side test terminals 40 (P1, P3, P2) and current-side test terminals 40 (1S, 3S, 3L, 1L).

[0025] The connector 83 is a component for switching between conductivity and non-conductivity between the transformer 2 and the high-voltage meter 3, and consists of a handle portion 83a made of insulating material and a main body portion 83b made of conductive material. The terminal board 88 described above is divided in the center at a predetermined interval, and the connector 83 is detachably fitted into this divided gap. By fitting the main body 83b of the connector 83 into the gap of the terminal board 88, one end of the terminal board 88 (transformer terminal section 81 side) and the other end (metering terminal section 82 side) are electrically connected via the connector 83. When replacing the high-voltage meter 3, the connector 83 is pulled out, which insulates one end (transformer side) and the other end (meter side) of the terminal board 88.

[0026] Next, the wiring confirmation device 100 of this embodiment will be described. The wiring confirmation device 100 of this embodiment is a device for confirming the wiring status between the high-voltage meter 3 and the check terminal 90. For example, after replacing the high-voltage meter 3, this wiring confirmation device 100 is used to check whether the lead wires 3a of the high-voltage meter 3 are properly connected. Specifically, the wiring confirmation device 100 is attached to the check terminal 90, which has seven terminals (terminal board 88) connected to the seven meter terminals 30 of the high-voltage meter 3 via lead wires 3a, to confirm the wiring status between the high-voltage meter 3 and the check terminal 90. As described above, in this embodiment, the meter terminal section 82 side of the terminal board 88 and the meter terminal 30 of the high-voltage meter 3 are connected via lead wire 3a. Therefore, in the following description, the multiple terminals connected to the seven meter terminals 30 of the high-voltage meter 3 will be described as seven terminal boards 88 equipped with meter terminal sections 82.

[0027] The wiring confirmation device 100 of this embodiment includes, for example, as shown in Figures 3 and 4, a plurality of electrodes 10 (in this case, seven) connected to the seven terminal boards 88 of the check terminal 90, a plurality of light-emitting units 11 (in this case, seven) corresponding to each of the seven electrodes 10, a power supply 12 for supplying current to the high-voltage meter 3 via at least one of the seven electrodes 10, and a switch 13 for switching the current on and off. This wiring confirmation device 100 is, for example, a circuit as shown in Figure 4, and includes an electrical circuit in which the electrode 10, light-emitting part 11, power supply 12, switch 13, etc. are electrically connected, and each of these parts of the device is arranged in a case body 101.

[0028] As shown in Figure 3(b), the seven electrodes 10 are provided on the lower side of the case body 101 and are arranged in an order corresponding to the seven terminal boards 88 arranged side by side on the check terminal 90. In Figure 3(b), electrodes 10 corresponding to "1S", "P1", "P3", "3S", "3L", "P2", and "1L" are arranged at predetermined intervals from top to bottom. Each electrode 10 is composed of a pair of leaf spring members 10a that clamp the terminal plate 88, and the pair of leaf spring members 10a are provided in such a manner that they protrude from a spacer 102 provided on the lower surface of the case body 101.

[0029] The pair of leaf spring members 10a of the electrode 10 are formed such that, for example, as shown in Figures 3(b) and 5, at least a portion of them has a gap narrower than the thickness of the terminal plate 88, while the tips of the pair of leaf spring members 10a are formed to have a gap wider than the thickness of the terminal plate 88. The leaf spring member 10a in this embodiment is a member formed by bending a thin, strip-shaped metal plate so that it exhibits a substantially S-shape when viewed from the side. The pair of leaf spring members 10a are arranged in a pair, with the convexly bent portions close to each other and the tips spaced apart from each other. Since the pair of leaf spring members 10a have this shape, as shown in Figure 5, if the wiring confirmation device 100 is positioned opposite the check terminal 90 and the electrodes 10 (the pair of leaf spring members 10a) corresponding to "1S", "P1", "P3", "3S", "3L", "P2", and "1L" are pressed against the terminal plates 88 corresponding to "1S", "P1", "P3", "3S", "3L", "P2", and "1L", the pair of leaf spring members 10a will elastically deform and grip the terminal plates 88.

[0030] As shown in Figure 3(a), the seven light-emitting units 11 are provided so that they can be seen from the top surface of the case body 101, and the illumination / non-illumination status of each light-emitting unit 11 can be visually confirmed. In this embodiment, a light-emitting diode (LED) is used as the light-emitting unit 11. The seven light-emitting units 11 are arranged in an order corresponding to the seven electrodes 10. In Figure 3(a), the following light-emitting units are arranged at predetermined intervals from top to bottom: a light-emitting unit 11 corresponding to "1S", a light-emitting unit 11 corresponding to "P1", a light-emitting unit 11 corresponding to "P3", a light-emitting unit 11 corresponding to "3S", a light-emitting unit 11 corresponding to "3L", a light-emitting unit 11 corresponding to "P2", and a light-emitting unit 11 corresponding to "1L". As shown in Figure 3(a), the top surface of the case body 101 is engraved with "1S", "P1", "P3", "3S", "3L", "P2", and "1L", corresponding to the seven light-emitting parts 11.

[0031] The power supply 12 is for supplying electricity to the high-voltage meter 3 to allow current to flow, when the seven electrodes 10 are connected to the seven terminal boards 88 of the check terminal 90, and the wiring confirmation device 100 and the high-voltage meter 3 are electrically connected. In this embodiment, as shown in Figure 4, a 9V battery is used as the power source 12. The battery, which serves as the power source 12, can be inserted and removed by opening the battery cover 12a located on the top side of the case body 101.

[0032] Switch 13 is an operating unit for checking the connection status between the high-voltage meter 3 and the check terminal 90. Specifically, with the seven electrodes 10 connected to the seven terminal boards 88 of the check terminal 90, and the connection confirmation device 100 and the high-voltage meter 3 electrically connected, the switch 13 is turned on / off to confirm the connection status between the high-voltage meter 3 and the check terminal 90. In this embodiment, the connection status between the high-voltage meter 3 and the check terminal 90 is checked according to the illumination / non-illumination pattern of the seven light-emitting units 11 when the switch 13 is turned on.

[0033] The electrical circuit shown in Figure 4 is an example of the electrical circuit of the wiring verification device 100. In this embodiment, the electrode 10 corresponding to "1S" and the light-emitting part 11 are electrically connected, and the first resistor 14a is electrically connected to the light-emitting part 11 corresponding to "1S". Similarly, the electrode 10 corresponding to "3S" and the light-emitting part 11 are electrically connected, and the second resistor 14b is electrically connected to the light-emitting part 11 corresponding to "3S". The first resistor 14a and the second resistor 14b have different resistance values. Here, the resistance value of the first resistor 14a is set to 250Ω, and the resistance value of the second resistor 14b is set to 90Ω. The first resistor 14a and the second resistor 14b are electrically connected to one end of the switch 13, and the other end of the switch 13 is electrically connected to the positive side of the power supply 12. Furthermore, electrodes 10 and light-emitting units 11 corresponding to "P1," "P3," "3L," "P2," and "1L" are electrically connected, and these light-emitting units 11 are electrically connected to the negative side of the power supply 12. The wiring verification device 100 is equipped with electrical circuits with this type of wiring design.

[0034] The wiring confirmation device 100 is configured to energize the wiring confirmation device 100 and the high-voltage meter 3 by supplying current from the electrode 10 connected to the current-side terminal plate 88 of the check terminal 90 to the high-voltage meter 3. With the seven electrodes 10 of the wiring confirmation device 100 connected to the seven terminal boards 88 of the check terminal 90, when the switch 13 is turned on, current flows from the power supply 12 to the electrode 10 corresponding to "1S" and the electrode 10 corresponding to "3S", and the wiring confirmation device 100 flows current from the electrodes 10 corresponding to "1S" and "3S" through the terminal boards 88 to the high-voltage meter 3. Here, since the first resistor 14a and the second resistor 14b provided in the electrical circuit of the wiring confirmation device 100 have different resistance values, the current value flowing through the first resistor 14a to the light-emitting part 11 and electrode 10 corresponding to "1S" will be different from the current value flowing through the second resistor 14b to the light-emitting part 11 and electrode 10 corresponding to "3S". Furthermore, by using LEDs that emit different colors depending on the current value as the light-emitting part 11 of this wiring confirmation device 100, the light-emitting part 11 corresponding to "1S" and the light-emitting part 11 corresponding to "3S" can be made to emit different colors. As will be described later, the light-emitting parts 11 other than "1S" and "3S" can also emit light in a color corresponding to the current value.

[0035] Next, the procedure for checking the wiring status between the high-voltage meter 3 and the check terminal 90 using the wiring confirmation device 100 of this embodiment will be described. Furthermore, the procedure for checking the connection status between the high-voltage meter 3 and the check terminal 90 is performed after removing the old high-voltage meter 3 that was connected to the meter terminal section 82 and replacing it with a new high-voltage meter 3. Therefore, the connector 83 of the check terminal 90 terminal section 80 is disconnected, and the check is performed with the transformer terminal section 81 and the meter terminal section 82 insulated from each other.

[0036] First, attach the wiring confirmation device 100 to the check terminal 90. By positioning the wiring confirmation device 100 opposite the check terminal 90 and pressing the electrodes 10 corresponding to "1S", "P1", "P3", "3S", "3L", "P2", and "1L" against the terminal plates 88 corresponding to "1S", "P1", "P3", "3S", "3L", "P2", and "1L", the pair of leaf spring members 10a will clamp the terminal plates 88, as shown in Figures 6, 7, and 8. In this way, the wiring confirmation device 100 can be attached to the check terminal 90 by clamping the terminal plate 88 with a pair of leaf spring members 10a, which are electrodes 10. Then, with the seven electrodes 10 connected to the seven terminal boards 88 of the check terminal 90, and the connection confirmation device 100 and the high-voltage meter 3 electrically connected, the switch 13 is turned on / off to confirm the connection status between the high-voltage meter 3 and the check terminal 90. Specifically, the wiring confirmation device 100 is attached to the check terminal 90, and with the wiring confirmation device 100 and the high-voltage meter 3 electrically connected, the switch 13 is turned on to energize the wiring confirmation device 100 and the high-voltage meter 3, and the wiring status between the high-voltage meter 3 and the check terminal 90 is checked according to the illumination / non-illumination patterns of the seven light-emitting parts 11.

[0037] Here, we will explain the correspondence between several wiring configurations between the high-voltage meter 3 and the check terminal 90 and the illumination / non-illumination patterns of the seven light-emitting units 11 of the wiring confirmation device 100.

[0038] Before explaining the lighting pattern, let's describe the overview of the internal circuit of the high-voltage meter 3. For example, as shown in Figures 9 and 10, the high-voltage meter 3 includes a current circuit connecting the current-side meter terminal 30 corresponding to "1S" and the current-side meter terminal 30 corresponding to "1L", a current circuit connecting the current-side meter terminal 30 corresponding to "3S" and the current-side meter terminal 30 corresponding to "3L", and a voltage circuit connecting the voltage-side meter terminal 30 corresponding to "P1", the voltage-side meter terminal 30 corresponding to "P2", and the voltage-side meter terminal 30 corresponding to "P3". In other words, the multiple (seven) metering terminals 30 of the high-voltage meter 3 include the current-side metering terminals 30 ("1S", "3S", "3L", "1L") connected to the current circuit of the high-voltage meter 3, and the voltage-side metering terminals 30 ("P1", "P3", "P2") connected to the voltage circuit of the high-voltage meter 3. Each current circuit is provided with a low-impedance coil 31. The voltage circuit is provided with two high-impedance coils 32. One high-impedance coil 32 is positioned between "P1" and "P2", and the other high-impedance coil 32 is positioned between "P3" and "P2". The low-impedance coil 31 and the high-impedance coil 32 are arranged to intersect at a distance from each other. The high-voltage meter 3 is equipped with such an electrical circuit.

[0039] First, we will explain the lighting pattern when the high-voltage meter 3 and the check terminal 90 are properly wired without any misconnections. As shown in Figures 9 and 10, if there are no incorrect connections between the high-voltage meter 3 and the check terminal 90, the electrodes 10 corresponding to "1S", "P1", "P3", "3S", "3L", "P2", and "1L" of the connection verification device 100 attached to the check terminal 90 (terminal board 88) are connected to the meter terminals 30 corresponding to "1S", "P1", "P3", "3S", "3L", "P2", and "1L" respectively via lead wires 3a. Then, when the switch 13 of the wiring confirmation device 100 attached to the check terminal 90 is turned on, and power is supplied to the wiring confirmation device 100 and the high-voltage meter 3, as shown in Figure 10, the current that passes through the first resistor 14a flows from the "1S" electrode 10 toward the "1S" meter terminal 30, and the current that flows through the current circuit of the high-voltage meter 3 flows from the "1L" meter terminal 30 toward the "1L" electrode 10. Also, the current that passes through the second resistor 14b flows from the "3S" electrode 10 toward the "3S" meter terminal 30, and the current that flows through the current circuit of the high-voltage meter 3 flows from the "3L" meter terminal 30 toward the "3L" electrode 10. As a result of this current flow, the light-emitting parts 11 labeled "1S" and "1L" that receive current through the first resistor 14a will emit green light, and the light-emitting parts 11 labeled "3S" and "3L" that receive current through the second resistor 14b will emit yellow light. The other light-emitting parts 11 will not emit light. As described above, the wiring confirmation device 100 energizes the wiring confirmation device 100 and the high-voltage meter 3 by passing current from the electrode 10 connected to the current-side terminal board 88 to the high-voltage meter 3, causing several light-emitting parts 11 to illuminate.

[0040] As shown above, the lighting pattern in which the "1S" and "1L" light-emitting parts 11 emit green light and the "3S" and "3L" light-emitting parts 11 emit yellow light is the lighting pattern when the high-voltage meter 3 and the check terminal 90 are properly connected. Furthermore, by having the operator handling the wiring confirmation device 100 memorize this normal wiring pattern, the operator can determine that there is a wiring error if any other lighting pattern is observed.

[0041] Next, we will explain the lighting pattern when there is a wiring error between the high-voltage meter 3 and the check terminal 90. Figures 11 and 12 show that the high-voltage meter 3 and check terminal 90 have incorrect wiring connections for "1S" and "P1". In this case, "1S" and "P1" are reversed. When the wiring confirmation device 100 is attached to the check terminal 90 (terminal board 88) in this state, the electrode 10 of the wiring confirmation device 100 corresponding to "1S" is connected to the measuring instrument terminal 30 corresponding to "P1" via the lead wire 3a, and the electrode 10 of the wiring confirmation device 100 corresponding to "P1" is connected to the measuring instrument terminal 30 corresponding to "1S" via the lead wire 3a. Then, when the switch 13 of the wiring confirmation device 100 attached to the check terminal 90 is turned on, and power is supplied to the wiring confirmation device 100 and the high-voltage meter 3, as shown in Figure 12, the current that has passed through the second resistor 14b flows from the "3S" electrode 10 toward the "3S" meter terminal 30, and the current that has flowed through the current circuit of the high-voltage meter 3 flows from the "3L" meter terminal 30 toward the "3L" electrode 10. On the other hand, there is no continuity from electrode 10 of "1S" which is connected to a high-impedance voltage circuit. When current is applied, the light-emitting parts 11 labeled "3S" and "3L" that receive the current passing through the second resistor 14b will emit yellow light. The other light-emitting parts 11 will not emit light.

[0042] This lighting pattern, where only the light-emitting parts 11 of "3S" and "3L" illuminate yellow, represents the lighting pattern when "1S" and "P1" are incorrectly wired in the wrong direction.

[0043] Furthermore, the high-voltage meter 3 and check terminal 90 (not shown in the figure) in Figure 13 have incorrect wiring of "P1" and "P3". In this case, "P1" and "P3" are reversed. When the wiring confirmation device 100 is attached to the check terminal 90 in this state, the electrode 10 of the wiring confirmation device 100 corresponding to "P1" is connected to the measuring instrument terminal 30 corresponding to "P3" via the lead wire 3a, and the electrode 10 of the wiring confirmation device 100 corresponding to "P3" is connected to the measuring instrument terminal 30 corresponding to "P1" via the lead wire 3a.

[0044] Then, when the switch 13 of the wiring confirmation device 100 attached to the check terminal 90 is turned on, and power is supplied to the wiring confirmation device 100 and the high-voltage meter 3, the same lighting pattern as when the wiring is normal (see Figure 10) is observed, as shown in Figure 13, with the "1S" and "1L" light-emitting parts 11 emitting green light and the "3S" and "3L" light-emitting parts 11 emitting yellow light. However, if the wiring is incorrectly connected between "P1" and "P3", the current circuit of the high-voltage meter 3 is not open. Therefore, even if one end of the terminal board 88 (transformer terminal section 81 side) and the other end (meter terminal section 82 side) are electrically connected via the connector 83, no abnormal current will flow to the transformer 2, and no problems such as the transformer 2 burning out will occur. We are currently working diligently to develop technology that will allow workers to identify incorrect wiring between "P1" and "P3".

[0045] Furthermore, the high-voltage meter 3 and check terminal 90 (not shown in the figure) shown in Figure 14 have incorrect wiring of "P3" and "3S". In this case, "P3" and "3S" are reversed. When the wiring confirmation device 100 is attached to the check terminal 90 in this state, the electrode 10 of the wiring confirmation device 100 corresponding to "P3" is connected to the measuring instrument terminal 30 corresponding to "3S" via the lead wire 3a, and the electrode 10 of the wiring confirmation device 100 corresponding to "3S" is connected to the measuring instrument terminal 30 corresponding to "P3" via the lead wire 3a. Then, when the switch 13 of the wiring confirmation device 100 attached to the check terminal 90 is turned on, and power is supplied to the wiring confirmation device 100 and the high-voltage meter 3, as shown in Figure 14, the current that has passed through the first resistor 14a flows from the "1S" electrode 10 toward the "1S" meter terminal 30, and the current that has flowed through the current circuit of the high-voltage meter 3 flows from the "1L" meter terminal 30 toward the "1L" electrode 10. On the other hand, there is no continuity from electrode 10 of "3S" which is connected to a high-impedance voltage circuit. When current is applied, the light-emitting parts 11 labeled "1S" and "1L" through which the current passed via the first resistor 14a emit green light. The other light-emitting parts 11 do not emit light.

[0046] This lighting pattern, in which the light-emitting parts 11 of "1S" and "1L" illuminate in green, represents the lighting pattern when "P3" and "3S" are incorrectly wired in a reversed configuration.

[0047] Furthermore, the high-voltage meter 3 and check terminal 90 (not shown in the figure) shown in Figure 15 have incorrect wiring of "3S" and "3L". In this case, "3S" and "3L" are reversed. When the wiring confirmation device 100 is attached to the check terminal 90 in this state, the electrode 10 of the wiring confirmation device 100 corresponding to "3S" is connected to the measuring instrument terminal 30 corresponding to "3L" via the lead wire 3a, and the electrode 10 of the wiring confirmation device 100 corresponding to "3L" is connected to the measuring instrument terminal 30 corresponding to "3S" via the lead wire 3a.

[0048] Then, when the switch 13 of the wiring confirmation device 100 attached to the check terminal 90 is turned on, and power is supplied to the wiring confirmation device 100 and the high-voltage meter 3, the same lighting pattern as when the wiring is normal (see Figure 10) is observed, as shown in Figure 15, with the light-emitting parts 11 of "1S" and "1L" emitting green light and the light-emitting parts 11 of "3S" and "3L" emitting yellow light. However, if the wiring is incorrectly connected to "3S" and "3L", the current circuit of the high-voltage meter 3 is not open, so even if one end of the terminal board 88 (transformer terminal section 81 side) and the other end (meter terminal section 82 side) are electrically connected via the connector 83, no abnormal current will flow to the transformer 2, and no problems such as the transformer 2 burning out will occur. We are currently exploring technologies to enable workers to identify incorrect wiring configurations between "3S" and "3L".

[0049] Furthermore, the high-voltage meter 3 and check terminal 90 (not shown in the figure) shown in Figure 16 have incorrect wiring between "3L" and "P2". In this case, "3L" and "P2" are reversed. When the wiring confirmation device 100 is attached to the check terminal 90 in this state, the electrode 10 of the wiring confirmation device 100 corresponding to "3L" is connected to the measuring instrument terminal 30 corresponding to "P2" via the lead wire 3a, and the electrode 10 of the wiring confirmation device 100 corresponding to "P2" is connected to the measuring instrument terminal 30 corresponding to "3L" via the lead wire 3a. Then, when the switch 13 of the wiring confirmation device 100 attached to the check terminal 90 is turned on, and power is supplied to the wiring confirmation device 100 and the high-voltage meter 3, as shown in Figure 16, the current that passes through the first resistor 14a flows from the "1S" electrode 10 toward the "1S" meter terminal 30, and the current that flows through the current circuit of the high-voltage meter 3 flows from the "1L" meter terminal 30 toward the "1L" electrode 10. Also, the current that passes through the second resistor 14b flows from the "3S" electrode 10 toward the "3S" meter terminal 30, and the current that flows through the current circuit of the high-voltage meter 3 flows from the "3L" meter terminal 30 toward the "P2" electrode 10. As a result of this current flow, the light-emitting parts 11 labeled "1S" and "1L" that receive current through the first resistor 14a will emit green light, and the light-emitting parts 11 labeled "3S" and "P2" that receive current through the second resistor 14b will emit yellow light. The other light-emitting parts 11 will not emit light.

[0050] In this lighting pattern, where the light-emitting parts 11 of "1S" and "1L" emit green light and the light-emitting parts 11 of "3S" and "P2" emit yellow light, "3L" and "P2" are incorrectly wired in reverse.

[0051] Furthermore, the high-voltage meter 3 and check terminal 90 (not shown in the figure) shown in Figure 17 have incorrect connections between "P2" and "1L". In this case, "P2" and "1L" are reversed. When the wiring confirmation device 100 is attached to the check terminal 90 in this state, the electrode 10 of the wiring confirmation device 100 corresponding to "P2" is connected to the measuring instrument terminal 30 corresponding to "1L" via the lead wire 3a, and the electrode 10 of the wiring confirmation device 100 corresponding to "1L" is connected to the measuring instrument terminal 30 corresponding to "P2" via the lead wire 3a. Then, when the switch 13 of the wiring confirmation device 100 attached to the check terminal 90 is turned on, and power is supplied to the wiring confirmation device 100 and the high-voltage meter 3, as shown in Figure 17, the current that passes through the first resistor 14a flows from the "1S" electrode 10 toward the "1S" meter terminal 30, and the current that flows through the current circuit of the high-voltage meter 3 flows from the "1L" meter terminal 30 toward the "P2" electrode 10. Also, the current that passes through the second resistor 14b flows from the "3S" electrode 10 toward the "3S" meter terminal 30, and the current that flows through the current circuit of the high-voltage meter 3 flows from the "3L" meter terminal 30 toward the "3L" electrode 10. As a result of this current flow, the light-emitting parts 11 labeled "1S" and "P2" that receive current through the first resistor 14a will emit green light, and the light-emitting parts 11 labeled "3S" and "3L" that receive current through the second resistor 14b will emit yellow light. The other light-emitting parts 11 will not emit light.

[0052] As shown above, the lighting pattern in which the light-emitting parts 11 of "1S" and "P2" emit green light and the light-emitting parts 11 of "3S" and "3L" emit yellow light is the lighting pattern when "P2" and "1L" are incorrectly wired in the reverse direction.

[0053] As described above, the lighting pattern when the high-voltage meter 3 and the check terminal 90 are properly connected (see Figure 10) and the four lighting patterns when there is a reversed wiring error between the high-voltage meter 3 and the check terminal 90 and the current circuit of the high-voltage meter 3 is open (see Figures 12, 14, 16, and 17) are all different lighting patterns of the seven light-emitting parts 11 of the wiring confirmation device 100. Therefore, the wiring status between the high-voltage meter 3 and the check terminal 90 can be determined according to the illumination / non-illumination patterns of the seven light-emitting parts 11.

[0054] As described above, with the wiring confirmation device 100 of this embodiment, the seven electrodes 10 of the wiring confirmation device 100 are connected to the seven terminal boards 88 of the check terminal 90 to which the high-voltage meter 3 is connected, and the wiring confirmation device 100 is attached to the check terminal 90. When the wiring confirmation device 100 and the high-voltage meter 3 are energized, the wiring status between the high-voltage meter 3 and the check terminal 90 can be determined and confirmed according to the illumination / non-illumination pattern of the seven light-emitting parts 11.

[0055] With this wiring confirmation device 100, the wiring status between the high-voltage meter 3 and the check terminal 90 can be confirmed by simply operating the switch 13 of the wiring confirmation device 100 attached to the check terminal 90 to check the illumination / non-illumination pattern of the seven light-emitting parts 11, making it possible to perform wiring inspection more simply than with conventional technology. If the wiring inspection by the wiring inspection device 100 confirms that there is an incorrect connection, the incorrect connection is corrected to a normal connection, and the wiring inspection is performed again by the wiring inspection device 100 to confirm that the connection is normal. After confirming that the wiring is correct using the wiring inspection device 100, if one end of the terminal board 88 (transformer terminal section 81 side) and the other end (meter terminal section 82 side) are electrically connected via the connector 83, problems due to incorrect wiring will not occur. (For example, problems such as abnormal current flowing to the transformer 2 due to incorrect wiring causing the transformer 2 to burn out will not occur.)

[0056] However, the present invention is not limited to the embodiments described above. In the above embodiment, it was explained that the incorrect wiring of the high-voltage meter 3 and the check terminal 90 is determined according to the lighting patterns of the seven light-emitting units 11 of the wiring confirmation device 100. However, it is also possible to determine a short circuit in the lead wire 3a connected to the meter terminal 30 of the high-voltage meter 3. For example, if the conductor of lead wire 3a is composed of multiple strands, and the strands of lead wire 3a connected to a predetermined measuring instrument terminal 30 become separated, a short circuit may occur where some of the separated strands come into contact with an adjacent measuring instrument terminal 30. The contact between wires can also be checked using the connection verification device 100.

[0057] In the wiring between the high-voltage meter 3 and the check terminal 90 (not shown in the figure) shown in Figure 18, there is a strand 3b that spans both "1S" and "P1" at the meter terminal 30 of the high-voltage meter 3, resulting in a short circuit between "1S" and "P1". When the wiring confirmation device 100 is attached to the check terminal 90 in this state, and the switch 13 of the wiring confirmation device 100 is turned on, power is supplied to the wiring confirmation device 100 and the high-voltage meter 3, as shown in Figure 18, the current that has passed through the first resistor 14a flows from the electrode 10 labeled "1S" toward the meter terminal 30 labeled "1S", and the current that has flowed through the current circuit of the high-voltage meter 3 flows from the meter terminal 30 labeled "1L" toward the electrode 10 labeled "1L". Furthermore, that current flows from the meter terminal 30 labeled "1S" toward the meter terminal 30 labeled "P1", and from the meter terminal 30 labeled "P1" toward the electrode 10 labeled "P1". Furthermore, the current that passes through the second resistor 14b flows from the "3S" electrode 10 toward the "3S" meter terminal 30, and the current that flows through the current circuit of the high-voltage meter 3 flows from the "3L" meter terminal 30 toward the "3L" electrode 10. As a result of this current flow, the light-emitting parts 11 labeled "1S," "1L," and "P1," through which the current passed via the first resistor 14a, emit green light, while the light-emitting parts 11 labeled "3S" and "3L," through which the current passed via the second resistor 14b, emit yellow light. The other light-emitting parts 11 do not emit light.

[0058] In this lighting pattern, where the light-emitting parts 11 of "1S", "1L", and "P1" emit green light and the light-emitting parts 11 of "3S" and "3L" emit yellow light, this is the lighting pattern when "1S" and "P1" are in contact.

[0059] Furthermore, in the connection between the high-voltage meter 3 and the check terminal 90 (not shown in the figure) shown in Figure 19, there is a strand 3b that spans both "P1" and "P3" at the meter terminal 30 of the high-voltage meter 3, resulting in a short circuit between "P1" and "P3". When the wiring confirmation device 100 is attached to the check terminal 90 in this state, and the switch 13 of the wiring confirmation device 100 is turned on, power is supplied to the wiring confirmation device 100 and the high-voltage meter 3, the same lighting pattern as when the wiring is normal (see Figure 10) is observed, as shown in Figure 19, with the light-emitting parts 11 of "1S" and "1L" emitting green light and the light-emitting parts 11 of "3S" and "3L" emitting yellow light. Such contacts can be detected by visually inspecting the wiring connections. The primary purpose of the wiring verification device 100 is to perform more reliable wiring verification by conducting electrical wiring verification after visual wiring verification. We are currently working diligently to develop a wiring confirmation device that will allow workers to determine if there is a contact between "P1" and "P3".

[0060] Furthermore, in the connection between the high-voltage meter 3 and the check terminal 90 (not shown in the figure) shown in Figure 20, there is a strand 3b that spans both "P3" and "3S" at the meter terminal 30 of the high-voltage meter 3, resulting in a short circuit between "P3" and "3S". When the wiring confirmation device 100 is attached to the check terminal 90 in this state, and the switch 13 of the wiring confirmation device 100 is turned on, power is supplied to the wiring confirmation device 100 and the high-voltage meter 3, as shown in Figure 20, the current that has passed through the first resistor 14a flows from the electrode 10 labeled "1S" toward the meter terminal 30 labeled "1S", and the current that has flowed through the current circuit of the high-voltage meter 3 flows from the meter terminal 30 labeled "1L" toward the electrode 10 labeled "1L". Furthermore, the current that passes through the second resistor 14b flows from the "3S" electrode 10 toward the "3S" meter terminal 30, and the current that flows through the current circuit of the high-voltage meter 3 flows from the "3L" meter terminal 30 toward the "3L" electrode 10. In addition, that current flows from the "3S" meter terminal 30 toward the "P3" meter terminal 30, and from the "P3" meter terminal 30 toward the "P3" electrode 10. As a result of this current flow, the light-emitting parts 11 labeled "1S" and "1L" that receive current through the first resistor 14a will emit green light, and the light-emitting parts 11 labeled "3S", "3L", and "P3" that receive current through the second resistor 14b will emit yellow light. The other light-emitting parts 11 will not emit light.

[0061] In this lighting pattern, where the light-emitting parts 11 of "1S" and "1L" emit green light, and the light-emitting parts 11 of "3S", "3L", and "P3" emit yellow light, this is the lighting pattern when "P3" and "3S" are in contact.

[0062] Furthermore, in the connection between the high-voltage meter 3 and the check terminal 90 (not shown in the figure) shown in Figure 21, there is a strand 3b that spans both "3S" and "3L" at the meter terminal 30 of the high-voltage meter 3, resulting in a short circuit between "3S" and "3L". When the wiring confirmation device 100 is attached to the check terminal 90 in this state, and the switch 13 of the wiring confirmation device 100 is turned on, power is supplied to the wiring confirmation device 100 and the high-voltage meter 3, as shown in Figure 21, the "1S" and "1L" light-emitting parts 11 light up green, and the "3S" and "3L" light-emitting parts 11 light up yellow, resulting in the same lighting pattern as when the wiring is normal (see Figure 10). Such contacts can be detected by visually inspecting the wiring connections. The primary purpose of the wiring verification device 100 is to perform more reliable wiring verification by conducting electrical wiring verification after visual wiring verification. We are currently working diligently on developing a wiring confirmation device that will allow workers to determine if there is a mix of "3S" and "3L" wires.

[0063] Furthermore, in the connection between the high-voltage meter 3 and the check terminal 90 (not shown in the figure) shown in Figure 22, there is a strand 3b that spans both "3L" and "P2" at the meter terminal 30 of the high-voltage meter 3, resulting in a short circuit between "3L" and "P2". When the wiring confirmation device 100 is attached to the check terminal 90 in this state, and the switch 13 of the wiring confirmation device 100 is turned on, power is supplied to the wiring confirmation device 100 and the high-voltage meter 3, as shown in Figure 22, the current that has passed through the first resistor 14a flows from the electrode 10 labeled "1S" toward the meter terminal 30 labeled "1S", and the current that has flowed through the current circuit of the high-voltage meter 3 flows from the meter terminal 30 labeled "1L" toward the electrode 10 labeled "1L". Furthermore, the current that passes through the second resistor 14b flows from the "3S" electrode 10 toward the "3S" meter terminal 30, and the current that flows through the current circuit of the high-voltage meter 3 flows from the "3L" meter terminal 30 toward the "3L" electrode 10. In addition, that current flows from the "3L" meter terminal 30 toward the "P2" meter terminal 30, and from the "P2" meter terminal 30 toward the "P2" electrode 10. As a result of this current flow, the light-emitting parts 11 labeled "1S" and "1L" that receive current through the first resistor 14a will emit green light, and the light-emitting parts 11 labeled "3S", "3L", and "P2" that receive current through the second resistor 14b will emit yellow light. The other light-emitting parts 11 will not emit light.

[0064] In this lighting pattern, where the light-emitting parts 11 of "1S" and "1L" emit green light, and the light-emitting parts 11 of "3S", "3L", and "P2" emit yellow light, this is the lighting pattern when "3L" and "P2" are in contact.

[0065] In the connection between the high-voltage meter 3 and the check terminal 90 (not shown in the figure) shown in Figure 23, there is a strand 3b that spans "P2" and "1L" at the meter terminal 30 of the high-voltage meter 3, resulting in a short circuit between "P2" and "1L". When the wiring confirmation device 100 is attached to the check terminal 90 in this state, and the switch 13 of the wiring confirmation device 100 is turned on, power is supplied to the wiring confirmation device 100 and the high-voltage meter 3, as shown in Figure 23, the current that has passed through the first resistor 14a flows from the electrode 10 labeled "1S" toward the meter terminal 30 labeled "1S", and the current that has flowed through the current circuit of the high-voltage meter 3 flows from the meter terminal 30 labeled "1L" toward the electrode 10 labeled "1L". Furthermore, that current flows from the meter terminal 30 labeled "1L" toward the meter terminal 30 labeled "P2", and from the meter terminal 30 labeled "P2" toward the electrode 10 labeled "P2". Furthermore, the current that passes through the second resistor 14b flows from the "3S" electrode 10 toward the "3S" meter terminal 30, and the current that flows through the current circuit of the high-voltage meter 3 flows from the "3L" meter terminal 30 toward the "3L" electrode 10. As a result of this current flow, the light-emitting parts 11 labeled "1S," "1L," and "P2," through which the current passed through the first resistor 14a, emit green light, while the light-emitting parts 11 labeled "3S" and "3L," through which the current passed through the second resistor 14b, emit yellow light. The other light-emitting parts 11 do not emit light.

[0066] In this lighting pattern, where the light-emitting parts 11 of "1S", "1L", and "P2" emit green light and the light-emitting parts 11 of "3S" and "3L" emit yellow light, this is the lighting pattern when "P2" and "1L" are in contact.

[0067] As described above, the lighting pattern when the high-voltage meter 3 and the check terminal 90 are properly connected (see Figure 10), and the four lighting patterns when there is a short circuit in the lead wire 3a (strand wire 3b) connected to the meter terminal 30 of the high-voltage meter 3 and the current circuit of the high-voltage meter 3 is open (see Figures 18, 20, 22, and 23), are all different lighting patterns for the seven light-emitting parts 11 of the connection confirmation device 100. Therefore, the connection status (short circuit) between the high-voltage meter 3 and the check terminal 90 can be determined according to the lighting patterns of the seven light-emitting parts 11 (illumination / non-illumination).

[0068] As described above, with the wiring confirmation device 100 of this embodiment, the seven electrodes 10 of the wiring confirmation device 100 are connected to the seven terminal boards 88 of the check terminal 90 to which the high-voltage meter 3 is connected, the wiring confirmation device 100 is attached to the check terminal 90, and the wiring confirmation device 100 and the high-voltage meter 3 are energized. The illumination / non-illumination pattern of the seven light-emitting parts 11 determines the wiring state (contact) between the high-voltage meter 3 and the check terminal 90, allowing confirmation of whether or not a contact has occurred in the wiring between the high-voltage meter 3 and the check terminal 90.

[0069] With this wiring confirmation device 100, it is possible to check whether or not there is a short circuit in the wiring between the high-voltage meter 3 and the check terminal 90 by simply operating the switch 13 of the wiring confirmation device 100 attached to the check terminal 90 and checking the illumination / non-illumination pattern of the seven light-emitting parts 11, thus enabling simpler wiring inspection than conventional technology. Then, if a short circuit is detected during the wiring inspection by the wiring inspection device 100, the short circuit is corrected to a normal connection, and the wiring inspection is performed again by the wiring inspection device 100 to confirm that the connection is normal. After confirming that the wiring is correct using the wiring inspection device 100, if one end of the terminal board 88 (transformer terminal section 81 side) and the other end (meter terminal section 82 side) are electrically connected via the connector 83, problems due to short circuits will not occur. (For example, a miswiring problem such as an abnormal current flowing to the transformer 2 side due to a short circuit causing the transformer 2 to burn out will not occur.)

[0070] As described above, with the wiring confirmation device 100 of this embodiment, by attaching the wiring confirmation device 100 to the check terminal 90 to which the high-voltage meter 3 is connected, and powering up the wiring confirmation device 100 and the high-voltage meter 3, the wiring status between the high-voltage meter 3 and the check terminal 90 can be determined according to the illumination / non-illumination pattern of the seven light-emitting parts 11, and it is possible to check whether there are any incorrect connections or short circuits in the wiring between the high-voltage meter 3 and the check terminal 90. Furthermore, if the wiring inspection by the wiring inspection device 100 confirms that there are incorrect connections or contacts, the incorrect connections or contacts can be corrected to normal connections, and the wiring inspection by the wiring inspection device 100 can be performed again to confirm that the connections are normal, thereby preventing problems caused by incorrect connections or contacts.

[0071] Furthermore, when a wiring inspection is performed using the wiring confirmation device 100 of this embodiment, if the illumination / non-illumination patterns of the seven light-emitting units 11 indicate a normal wiring configuration, the operator shall visually confirm the wiring status of the lead wires 3a to ensure that the wiring is indeed normal. As mentioned above, even if the illumination / non-illumination patterns of the seven light-emitting units 11 indicate that the wiring is correct, miswiring or contact may still occur. If the indicator light pattern shows that the wiring is normal, even if one end of the terminal board 88 (transformer terminal section 81 side) and the other end (meter terminal section 82 side) are electrically connected via the connector 83, no abnormal current will flow to the transformer 2 side, except in the case of a short circuit, and no problems such as the transformer 2 burning out will occur. However, the wiring is still not normal, so if any incorrect wiring is found through visual inspection, it should be corrected to the normal wiring as soon as possible.

[0072] The application of the present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from the spirit of the invention. [Explanation of Symbols]

[0073] 2 Transformers 2a Lead wire 3. High-voltage measuring instrument 3a Lead wire 3b bare wire 10 electrodes 10a A pair of leaf spring members 11 Light-emitting part 12 Power supply 13 switches 14a First resistor 14b 2nd resistor 30 Meter terminal 40 Test terminals 41 Terminal body 41a Insertion hole 42 Fixing screws 50 Alternative terminal 51 Terminal body 51a Insertion hole 52 Fixing screws 80 Terminal section 81 Transformer terminal section 82 Terminal section for measuring instrument 83 Connectors 83a Handle 83b Main body 88 Terminal board 90 Check Terminal 100 Wiring Verification Device

Claims

1. A connection confirmation device for confirming the connection status between a high-voltage meter and a check terminal, which is attached to a check terminal having multiple terminals connected to multiple meter terminals of a high-voltage meter, The wiring confirmation device comprises a circuit in which a plurality of electrodes, each connected to the plurality of terminals, a plurality of light-emitting units corresponding to each of the plurality of electrodes, and a power supply for supplying current to the high-voltage meter via at least one of the plurality of electrodes are electrically connected. A wiring confirmation device characterized in that the plurality of electrodes are connected to the plurality of terminals, and the wiring status between the high-voltage meter and the check terminal can be confirmed according to the illumination / non-illumination pattern of the plurality of light-emitting parts when the wiring confirmation device and the high-voltage meter are energized.

2. The plurality of measuring instrument terminals include current-side measuring instrument terminals connected to the current circuit of the high-voltage measuring instrument, and voltage-side measuring instrument terminals connected to the voltage circuit of the high-voltage measuring instrument. The check terminal has a plurality of terminals arranged in a predetermined order, including a current-side terminal corresponding to the current-side metering terminal and a voltage-side terminal corresponding to the voltage-side metering terminal. The wiring confirmation device according to claim 1, characterized in that it is configured to energize the wiring confirmation device and the high-voltage meter by passing current from the electrode connected to the current-side terminal to the high-voltage meter.

3. The wiring confirmation device according to claim 1 or 2, characterized in that each of the plurality of electrodes is provided with a pair of leaf spring members that clamp the plurality of terminals.

4. The wiring confirmation device according to claim 3, characterized in that at least a portion of the pair of leaf spring members are formed to have a gap narrower than the thickness of the terminal, and the tips of the pair of leaf spring members are formed to have a gap wider than the thickness of the terminal.

Images