JP2014055840A - Conveyance table for electric meter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conveyance table for an electric meter, in which performance tests of various types of electric meters can be performed automatically and efficiently.SOLUTION: An conveyance table 10 for an electric meter, includes: a pallet body 11 on which an electric meter 50 is placed; and a terminal block 20 which is replaceably mounted to the pallet body 11, and electrically connects the electric meter 50 with a testing device. The terminal block 20 has current terminal contacts 22a to 22d which are connected to current terminals 52a to 52d of the electric meter 50, and voltage terminal contacts 23a to 23c which are connected to voltage terminals 53a to 53c of the electric meter 50. The terminal block 20 further includes current measuring terminals 24a to 24d which connects the current terminal contacts 22a to 22d with the testing device, and voltage measuring terminals 26a to 26f which connects the voltage terminal contacts 23a to 23c with the testing device.

Description

  The present invention mounts an electric meter having a box and a current terminal and a voltage terminal provided on one surface of the box, carries the electric meter, and connects the electric meter to a test apparatus to perform a performance test. The present invention relates to an electric instrument carrier.

  2. Description of the Related Art Conventionally, a performance test for inspecting whether a watt hour meter satisfies a predetermined standard has been performed using a test apparatus. When performing such a performance test, it is necessary to connect the connecting wire on the power source side of the test apparatus and each external terminal of the watt hour meter for each watt hour meter to be measured. In this case, the connection conductor on the power source side of the test apparatus and each external terminal of the watt hour meter are connected to each other via, for example, a connector provided on the verification test table.

  As an automatic connection device for automatically connecting a box, a watt-hour meter having an external terminal protruding outward from one surface of the box, and a power source side of the test apparatus, for example, those described in Patent Document 1 and Patent Document 2 Are known.

JP 2010-38767 A JP 2010-249777 A

  By the way, in recent years, it has been desired to perform a performance test of an electric meter automatically (or semi-automatically) without human intervention as much as possible. For example, it is attempted to perform a plurality of types of performance tests on each electric meter while each electric meter is placed on a pallet and placed on the pallet.

  However, there are many types of electric meters, and the positions and the number of external terminals are different for each type. For this reason, when it is going to prepare a pallet according to the kind of electric meter, there exists a possibility that it may become very complicated and it may cost.

  Even if the electrical terminals have substantially the same position and number of external terminals, the thickness and shape of the external terminals may differ slightly depending on the manufacturer, for example. Therefore, even in such a case, it is necessary to be able to reliably perform the performance test of all electric meters.

  The present invention has been made in consideration of such points, and an object thereof is to provide an electric meter carrier that can automatically and efficiently perform performance tests of various types of electric meters. .

  The present invention mounts an electric meter having a box and a current terminal and a voltage terminal provided on one surface of the box, carries the electric meter, and connects the electric meter to a test apparatus to perform a performance test. The pallet main body on which the electric meter is mounted and the terminal block that is replaceably attached to the pallet main body and electrically connects the electric meter and the test apparatus. A current terminal contact connected to the current terminal of the electric meter, a voltage terminal contact connected to the voltage terminal of the electric meter, a measurement terminal for current connecting the current terminal contact and the test device, and a voltage terminal contact An electric meter carrier having a voltage measurement terminal for connecting a child and a test apparatus.

  In the present invention, the voltage terminal contact of the terminal block is separated into a voltage supply contact and a voltage measurement contact through a separation groove, and one of these members has a convex portion and the other has a concave portion. The convex part of one member enters into the concave part of the other member, and the width of the convex part and the concave part is smaller than the width of the voltage terminal, respectively.

  The present invention is the electric instrument carrier, wherein the separation groove extends in a zigzag shape or a meandering shape.

  The present invention is the electrical instrument carrier, wherein the voltage terminal contact is biased toward the electrical instrument by an elastic member.

  The current measuring terminal and the voltage measuring terminal are both arranged on the upper surface of the terminal block.

  According to the present invention, the terminal block that electrically connects the electric meter and the test apparatus can be replaced. Thereby, when performing a performance test of an electric meter, the performance test of various electric meters can be efficiently performed by exchanging a terminal block according to the kind of each electric meter.

FIG. 1 is a perspective view showing an electric meter for performing a performance test. FIG. 2 is a schematic plan view showing an electrical instrument test system that automatically performs a performance test of the electrical instrument using the electrical instrument carrier according to the embodiment of the present invention. FIG. 3 is an exploded perspective view showing an electric meter carrier and an electric meter according to an embodiment of the present invention. FIG. 4 is a perspective view showing a state in which an electric meter carrier and an electric meter according to an embodiment of the present invention are assembled. FIG. 5 is a perspective view showing a pallet body of the electric instrument carrier. FIG. 6 is a plan view showing a pallet main body of the electric instrument carrier. FIG. 7 is a perspective view showing a terminal block of an electric meter carrier. FIG. 8 is a plan view showing a terminal block of an electric meter carrier. FIG. 9 is a bottom view showing a terminal block of the electric instrument carrier. 10A to 10C are front views showing various voltage terminal contacts. FIG. 11 is a schematic side view showing a state in which the terminal block and the test apparatus are connected.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

Configuration of Electric Meter First, referring to FIG. 1, an outline of an electric meter that is placed on the electric meter carrier according to the present embodiment and in which a performance test is performed will be described.

  The electric meter 50 shown in FIG. 1 includes, for example, a watt hour meter that accumulates and measures electric power. The electric meter 50 includes a box 51 having a substantially rectangular parallelepiped shape, four current terminals 52 a to 52 d having four substantially U-shapes protruding outward from one surface (bottom surface) 51 a of the box 51, and a bottom surface 51 a of the box 51. And three voltage terminals 53a to 53c.

  Of these, the four current terminals 52a to 52d are respectively composed of a 1S terminal 52a, a 3S terminal 52b, a 3L terminal 52c, and a 1L terminal 52d, and are arranged side by side in the horizontal direction.

  The three voltage terminals 53a to 53c are respectively composed of a P1 terminal 53a, a P3 terminal 53b, and a P2 terminal 53c, and in the lateral direction at positions behind the current terminals 52a to 52d (Z-axis minus direction). Are arranged side by side. Two fitting terminals 54 project from the bottom surface 51a of the box 51 at a position in front of the current terminals 52a to 52d (in the plus direction of the Z axis).

  An enclosure member 55 is provided on the outer periphery of the rear portion of the bottom surface 51 a of the box 51. The enclosing member 55 has a bottom surface 55a and a pair of side surfaces 55b and 55c located on both sides of the bottom surface 55a. Further, a window portion 56 for displaying a numerical value of the electric energy is provided on the front surface 51c of the box 51. Further, a communication connector 57 for exchanging signals with the outside is provided at the front portion of the bottom surface 51a of the box 51.

Configuration of Electric Meter Test System Next, an outline of an electric meter test system that automatically performs a performance test of the electric meter using the electric meter carrier according to the present embodiment will be described with reference to FIG.

  2 is a system for automatically inspecting whether or not the electrical meter 50 satisfies a predetermined standard. Such an electric meter test system 100 includes an annular conveyor device 101 that conveys the electric meter carrier 10 on which the electric meter 50 is placed.

  The conveyor device 101 includes an instrument mounting portion 102, a screw tightening device 103, an insulation resistance test device 104, a test unit 105, a label applying device 106, a sealing device 107, and a screw loosening device 108 in the clockwise direction of FIG. They are installed in this order.

  In the instrument mounting unit 102, the operator removes the electrical instrument 50 from which the performance test has been completed from the electrical instrument carrier 10, and the operator places the electrical instrument 50 on which the performance test will be performed from now on the electrical instrument carrier 10. It is a place to do.

  The screw tightening device 103 is a device that fixes the electric meter 50 and the electric meter carrier 10 that have been conveyed from the instrument mounting portion 102 to each other. Specifically, by tightening mounting screws 27a to 27d (described later) of the electric instrument carrier 10, the current terminals 52a to 52d of the electric instrument 50 are connected to the current terminal contacts 22a to 22d ( (To be described later).

  The insulation resistance test apparatus 104 performs an insulation resistance test on the electric meter 50 conveyed from the instrument mounting unit 102. In this insulation resistance test apparatus 104, a test (insulation resistance test) for automatically checking the safety so as not to cause burnout or an accident due to electric leakage of the electric meter 50 is automatically performed.

  The test unit 105 performs various performance tests on the electric meter 50 conveyed from the insulation resistance test apparatus 104. In this test unit 105, for example, a test (metering test) whether or not the display mechanism of the window 56 of the electric meter 50 operates correctly, and a test (whether or not the error is within a verification tolerance range). Instrument error test) is performed automatically.

  The label sticking device 106 is a device that automatically sticks a verification label to the electric meter 50 that has passed various tests in the insulation resistance test device 104 and the test unit 105. Further, the sealing device 107 is a device that automatically seals the electric meter 50 conveyed from the label sticking device 106 with a test seal.

  The screw loosening device 108 is a device that allows the electric meter 50 to be removed from the electric meter carrier 10 by loosening the mounting screws 27a to 27d (described later) of the electric meter carrier 10 conveyed from the sealing device 107. It is.

Construction of the conveying table for the electric meter Next, referring to FIG. 3 through FIG. 10 will be described schematically electrical instrument carrier table according to the present embodiment.

  3 and 4 is used in the electric instrument test system 100 described above. That is, the electric instrument carrier 10 is mounted with the electric instrument 50, conveys the electric instrument 50, and connects the electric instrument 50 to the above-described test apparatus (insulation resistance test apparatus 104 or test unit 105). The performance test of the electric meter 50 is performed.

  As shown in FIGS. 3 and 4, the electric instrument carrier 10 includes a pallet body 11 on which the electric instrument 50 is placed, and a terminal block 20 attached to the pallet body 11 so as to be replaceable. .

  5 and 6, the pallet body 11 includes a bottom plate 12 and side plates 13 and 13 that are attached to both sides of the bottom plate 12 and extend vertically from the bottom plate 12. Both the bottom plate 12 and the side plates 13 and 13 are made of a synthetic resin material such as polyacetal. This prevents the electric meter 50 from being damaged while the electric meter 50 is being transported. Positioning pins 14, 14 are provided on the upper surfaces of the side plates 13, 13 for positioning the electric instrument carrier 10 with respect to the screw tightening device 103 and the test device (insulation resistance test device 104 or test unit 105). Yes.

  Further, the bottom plate 12 has an accommodation recess 15 for accommodating the terminal block 20 and the electric meter 50 on the upper surface thereof. The housing recess 15 has a terminal block area 15a for attaching the terminal block 20 and an electric instrument area 15b on which the electric instrument 50 is placed (FIG. 6). Further, the electric instrument area 15b of the housing recess 15 is gradually widened toward the opposite side (Y-axis plus direction) of the terminal block area 15a, and the electric instrument 50 can be easily attached to the pallet body 11. It is like that.

  Furthermore, openings 16 for attaching the terminal block 20 to the pallet body 11 using attachment members 17 (see FIG. 3) such as screws and bolts are formed on both sides of the terminal block region 15a of the housing recess 15. Yes.

  On the other hand, as shown in FIGS. 7 to 9, the terminal block 20 is provided on a block main body 21 made of a synthetic resin material such as polyacetal, and an upper surface 21 a of the block main body 21, and current terminals 52 a to 52 d of the electric meter 50. Current terminal contacts 22a to 22d connected to each other. The upper surface 21a of the block main body 21 is formed with four recesses 21c cut out on the side surface 21b side, and the respective current terminal contacts 22a to 22d are respectively disposed in the recesses 21c. Further, voltage terminal contacts 23 a to 23 c connected to the voltage terminals 53 a to 53 c of the electric meter 50 are provided on the side surface 21 b of the block main body 21.

  Further, current measurement terminals 24a to 24d made of metal such as copper are disposed on the upper surface 21a of the block body 21. The current measurement terminals 24a to 24d serve to connect the current terminal contacts 22a to 22d and the test apparatus (the insulation resistance test apparatus 104 or the test unit 105), respectively.

  Further, a communication plug 36 (see FIGS. 3 and 4) connected to the communication connector 57 of the electric meter 50 extends on the upper surface 21a of the block body 21. Furthermore, screw holes 35 for attaching the terminal block 20 to the pallet main body 11 using attachment members 17 (see FIG. 3) such as screws and bolts are formed on both sides of the block main body 21.

  Furthermore, a terminal mounting plate 25 made of a non-conductive material such as polyimide is attached to the upper surface 21a of the block body 21. On the terminal mounting plate 25, voltage measurement terminals 26a to 26f for connecting the voltage terminal contacts 23a to 23c and the test apparatus (the insulation resistance test apparatus 104 or the test unit 105) are arranged. Further, a plurality of communication plug terminals 37 for connecting the communication plug 36 and the test apparatus (test unit 105) are arranged on the terminal mounting plate 25.

  The voltage measurement terminals 26a to 26f and the plurality of communication plug terminals 37 all have the same planar shape (in this case, hexagonal shape), and are aligned vertically and horizontally on the terminal mounting plate 25. . In addition to the voltage measurement terminals 26a to 26f and the communication plug terminal 37, the measurement terminals are arranged on the terminal mounting plate 25, but detailed description thereof is omitted here.

  7 to 9, the current terminal contacts 22a to 22d are each made of metal, for example, copper plated with gold. Mounting screws 27a to 27d are inserted into the current terminal contacts 22a to 22d, respectively. Then, after the current terminals 52a to 52d are mounted from the side surface 21b side of the block main body 21, the mounting screws 27a to 27d are tightened from above in the screw tightening device 103 (described above), whereby the current terminals 52a to 52d are The terminal contacts 22a to 22d are pressed against each other to come into close contact with each other. Thereby, for example, even if the thickness of the current terminals 52a to 52d is somewhat different (for example, about several mm) depending on the manufacturer, the current terminals 52a to 52d can be reliably brought into contact with the current terminal contacts 22a to 22d. .

  The current terminal contacts 22a to 22d are connected to the 1S contact 22a connected to the 1S terminal 52a of the electric meter 50, the 3S contact 22b connected to the 3S terminal 52b, and the 3L terminal 52c. It consists of a 3L contact 22c and a 1L contact 22d connected to a 1L terminal 52d. These current terminal contacts 22a to 22d are respectively connected to the corresponding connecting wires 28a to 28d, and the connecting wires 28a to 28d are respectively connected to the current measuring terminals 24a to 24d.

  The communication plug 36 is connected to a connection wire 38 (FIG. 9), and the connection wire 38 is connected to the plurality of communication plug terminals 37 described above.

  On the other hand, the voltage terminal contacts 23a to 23c are each made of metal, for example, copper plated with gold. These voltage terminal contacts 23a to 23c are connected to a P1 contact 23a connected to the P1 terminal 53a of the electric meter 50, a P3 contact 23b connected to the P3 terminal 53b, and a P2 terminal 53c. It consists of a P2 contact 23c.

These voltage terminal contacts 23a to 23c are respectively connected to voltage supply contacts 23a _{1 to} 23c ₁ and voltage measurement contacts 23a _{2 to} 23c through a separation groove 32 (see FIG. 10A), as will be described later. ₂ and separated. In other words, the contact 23a for P1 is separated into the voltage supply contacts 23a ₁ and the voltage measuring contacts 23a _2, contact 23b for P3, the voltage supply contact 23b ₁ and the voltage measuring contacts 23b is separated into _two and, contact 23c for P2 is separated into the voltage supply contact 23c ₁ and the voltage measuring contacts 23c _2.

Further, as shown in FIG. 9, each of the voltage supply contacts 23 a _{1 to} 23 c ₁ and each of the voltage measurement contacts 23 a _{2 to} 23 c ₂ are connected to relay portions 29 a to 29 f, respectively. These relay portions 29a to 29f are respectively connected to the corresponding connecting wires 30a to 30f, and the connecting wires 30a to 30f are connected to the voltage measuring terminals 26a to 26f described above, respectively.

  In addition, each voltage terminal contactor 23a-23c is urged | biased to the electric meter 50 side integrally with each relay part 29a-29f by elastic members 31, such as a spring, respectively. Each voltage terminal contact 23a-23c protrudes slightly from the side surface 21b of the block main body 21, respectively. Thus, by energizing each voltage terminal contact 23a-23c to the electric meter 50 side, each voltage terminal 53a-53c and each voltage terminal contact 23a-23c can be connected reliably.

  Next, the structure of the voltage terminal contacts 23a-23c is demonstrated with reference to Fig.10 (a)-(c). In FIGS. 10A to 10C, the description will be given by taking one voltage terminal contact 23a as an example, but the same applies to the other voltage terminal contacts 23b to 23c.

As shown in FIG. 10A, the voltage terminal contact 23a includes a voltage supply contact 23a ₁ and a voltage measurement contact 23a ₂ separated from each other via a zigzag or meandering separation groove 32. Has been. Among the voltage supply contact 23a ₁ has a comb shape, and a plurality of projections 33a and a plurality of recesses 34a. Further, the voltage measuring contact 23a ₂ has substantially the same comb shape as the voltage supply contact 23a ₁ and includes a plurality of convex portions 33b and a plurality of concave portions 34b. In this case, the projections 33a of the voltage supply contact 23a ₁ is enters to each recess 34b of the voltage measuring contacts 23a _2, each convex section 33b of the voltage measuring contacts 23a _2, the contact voltage supply It has entered the respective recesses 34a of the child 23a _1.

Further, the width W1 of the convex portions 33a and 33b and the width W2 of the concave portions 34a and 34b are respectively smaller than the width of the voltage terminal 53a (the phantom line in FIG. 10A). Accordingly, for example, when the shape and arrangement position of the voltage terminal 53a are slightly different depending on the manufacturer of the electric meter 50 (specifically, the shape of the voltage terminal 53a is circular or square, or the arrangement position is about several millimeters). even if such are shifted), it is possible to reliably contact the voltage terminals 53a to both the voltage supply contacts 23a ₁ and voltage measuring contacts 23a _2.

  The convex portions 33a and 33b and the concave portions 34a and 34b may extend in the vertical direction as shown in FIGS. 10A and 10C, respectively, and as shown in FIG. It may extend in the lateral direction.

  Further, both ends 32a and 32b of the separation groove 32 may be arranged on a pair of long sides facing the voltage terminal contact 23a, respectively, as shown in FIGS. 10 (a) and 10 (b). As shown in FIG.10 (c), you may arrange | position on the same long side of the voltage terminal contactor 23a.

  Such a terminal block 20 is not limited to the illustrated one, and can be configured in accordance with an electric meter 50 that performs a performance test. In particular, the numbers and positions of the current terminal contacts 22a to 22d and the voltage terminal contacts 23a to 23c are configured in accordance with the numbers and positions of the current terminals 52a to 52d and the voltage terminals 53a to 53c of the electric meter 50, respectively.

  For example, the electric meter 50 is a single-phase two-wire type, single-phase three-wire type, or three-phase four-wire type watt-hour meter in addition to the three-phase three-wire type watt-hour meter as shown in FIG. Also good. That is, the electric meter 50 may have two, four, or six current terminals and may have two, three, or four voltage terminals. Correspondingly, the terminal block 20 has two, four, or six current terminal contacts connected to each current terminal, and two, three, or four connected to each voltage terminal. The voltage terminal contactor may be included.

  Therefore, in accordance with the type of the electric meter 50, a plurality of types of terminal blocks 20 having different positions and numbers of current terminal contacts and voltage terminal contacts are prepared. On the other hand, in order to minimize adjustment on the test device (insulation resistance test device 104 or test unit 105) side even when the types of the electric meters 50 are different, the current measurement terminals 24a to 24d and the voltage measurement terminals are used. The positions of 26a to 26f are preferably constant between the terminal blocks 20.

Operation of the present embodiment Next, the operation of the present embodiment having such a configuration will be described.

  First, the terminal block 20 corresponding to the electric meter 50 which performs a performance test is prepared. Next, this terminal block 20 is fixed to the pallet main body 11 using the attachment member 17 (FIG. 3). In this manner, the electric instrument carrier 10 including the pallet body 11 and the terminal block 20 is obtained.

  Next, in the instrument mounting part 102 of the electrical instrument test system 100 (FIG. 2), the operator places the electrical instrument 50 on the electrical instrument carrier 10. At this time, the electric meter 50 slides in the horizontal direction on the housing recess 15, and the current terminals 52a to 52d of the electric meter 50 come into contact with the upper surfaces of the current terminal contacts 22a to 22d, respectively. Moreover, the voltage terminals 53a-53c of the electric meter 50 are in contact with the voltage terminal contacts 23a-23c, respectively. Further, the worker connects the communication plug 36 to the communication connector 57 of the electric meter 50.

  Subsequently, the worker places the electric meter 50 and the electric instrument carrier 10 on the conveyor device 101. Next, the electric meter 50 and the electric instrument carrier 10 are automatically moved on the conveyor device 101 and are carried into the screw fastening device 103. In the screw tightening device 103, the mounting screws 27a to 27d of the electric instrument carrier 10 are automatically tightened by a screw tightening tool (not shown). As a result, the current terminals 52 a to 52 d of the electric meter 50 are closely fixed to the current terminal contacts 22 a to 22 d of the electric meter carrier 10.

  Next, the electric instrument 50 and the electric instrument carrier 10 are moved together on the conveyor device 101 and carried into the insulation resistance test apparatus 104. In this insulation resistance test device 104, an insulation resistance test is automatically performed on the electric meter 50.

  The electric meter 50 that has failed the insulation resistance test is discharged from the insulation resistance test apparatus 104 together with the electric instrument carrier 10.

  Subsequently, the electric instrument 50 that has passed the insulation resistance test apparatus 104 moves on the conveyor apparatus 101 together with the electric instrument carrier 10 and is carried into the test unit 105. In the test unit 105, a measurement test and a difference test are automatically performed on the electric meter 50.

  During this time, as shown in FIG. 11, the current measuring element 112, the voltage measuring element 113, and the communication plug measuring element (not shown) on the test apparatus descend from above, and the current measuring terminals 24a of the terminal block 20 respectively. To 24 d, the voltage measurement terminals 26 a to 26 f and the communication plug terminal 37. In this manner, the current terminals 52a to 52d, the voltage terminals 53a to 53c, and the communication plug 36 of the electric meter 50 are the current measurement terminals 24a to 24d, the voltage measurement terminals 26a to 26f, and the communication plug 36 of the terminal block 20. Each is connected to the test apparatus main body (not shown) side via the terminal 37 for use. In this state, the above-described measurement test and instrumental difference test are performed by passing a current from the test apparatus main body to the electric meter 50 through the terminal block 20.

  The electric meter 50 that has failed the measurement test or the instrumental difference test is discharged from the test unit 105 together with the electric meter carrier 10.

  On the other hand, the electric meter 50 that has passed the measurement test and the instrument difference test moves on the conveyor device 101 integrally with the electric meter carrier 10 and is carried into the label applying device 106. In this label sticking device 106, a test label is automatically stuck on the electric meter 50.

  Subsequently, the electric meter 50 and the electric instrument carrier 10 move on the conveyor device 101 and are carried into the sealing device 107. In this sealing device 107, the verification stamp is automatically sealed with respect to the electric meter 50.

  Next, the electric meter 50 and the electric instrument carrier 10 move on the conveyor device 101 and are carried into the screw loosening device 108. In the screw loosening device 108, the mounting screws 27a to 27d of the terminal block 20 are automatically loosened by a screw loosening tool (not shown).

  Thereafter, the electric instrument 50 and the electric instrument carrier 10 are conveyed to the instrument mounting portion 102. In this instrument mounting portion 102, the operator removes the electric meter 50 for which the performance test has been completed from the electric instrument carrier 10, and removes the communication plug 36 from the communication connector 57 of the electric instrument 50. Thereafter, another electric meter 50 to be subjected to a performance test is placed on the electric instrument carrier 10.

  In addition, when the kind of electric meter 50 which performs a performance test differs, an operator removes the terminal block 20 of the conveyance base 10 for electric meters, and attaches the terminal block 20 corresponding to the electric meter 50 which performs a performance test.

  Thus, according to the present embodiment, the terminal block 20 that electrically connects the electric meter 50 and the test apparatus (the insulation resistance test apparatus 104 or the test unit 105) can be replaced. Thereby, when performing the performance test of the electric meter 50, the performance test of various electric meters 50 can be efficiently implemented by exchanging the terminal block 20 according to the kind of each electric meter 50.

Further, according to the present embodiment, the voltage terminal contacts 23 a to 23 c of the terminal block 20 are connected to the voltage supply contacts 23 a _{1 to} 23 c ₁ and the voltage measurement contacts 23 a _{2 to} 23 c ₂ via the separation groove 32. Have been separated. Further, the convex portion 33a of the voltage supply contacts _{23a 1 ~23c} 1 is enters the recess 34b of the voltage measuring contacts _{23a 2 ~23c} 2, the convex portion 33b of the voltage measuring contacts _{23a 2 ~23c} 2 is The voltage supply contacts 23a _{1 to} 23c ₁ enter the recesses 34a. Furthermore, the width W1 of the convex portions 33a and 33b and the width W2 of the concave portions 34a and 34b are smaller than the widths of the voltage terminals 53a to 53c, respectively. As a result, even if the shapes and arrangement positions of the voltage terminals 53a to 53c are slightly different, the voltage terminals 53a to 53c are connected to the voltage supply contacts 23a _{1 to} 23c ₁ and the voltage measurement contacts 23a _{2 to} 23c _2. It is possible to ensure contact with both.

10 electric meter for conveying table 11 pallet body 12 bottom plate 13 side plate 14 positioning pins 15 accommodating recess 16 hole 17 mounting member 20 Terminal Block 21 Block body 22a~22d current terminal contact 23a~23c voltage terminal contact 23a ₁ ~23c ₁ Voltage supply contact 23a _{2 to} 23c ₂ Voltage measurement contact 24a to 24d Current measurement terminal 25 Terminal mounting plate 26a to 26f Voltage measurement terminal 31 Elastic member 32 Separation groove 33a, 33b Protrusion 34a, 34b Concavity 50 Electric meter 51 Box 52a-52d Current terminal 53a-53c Voltage terminal

Claims (5)

An electric meter having a box and an electric meter having a current terminal and a voltage terminal provided on one side of the box, carrying the electric meter, and performing a performance test by connecting the electric meter to a test apparatus In the carrier stand
A pallet body on which an electric meter is placed;
It is attached to the pallet body in an exchangeable manner, and includes a terminal block for electrically connecting the electric meter and the test apparatus,
The terminal block is
A current terminal contact connected to the current terminal of the electric meter;
A voltage terminal contact connected to the voltage terminal of the electric meter;
A current measuring terminal for connecting the current terminal contactor and the test device;
An electric meter carrier comprising a voltage measuring terminal for connecting the voltage terminal contact and the test apparatus.   The voltage terminal contact of the terminal block is separated into a voltage supply contact and a voltage measurement contact through a separation groove, and one of these members has a convex portion and the other has a concave portion, 2. The electric instrument carrier according to claim 1, wherein the convex portion of the member enters the concave portion of the other member, and the width of the convex portion and the concave portion is smaller than the width of the voltage terminal.   3. The electric instrument carrier according to claim 2, wherein the separation groove extends in a zigzag shape or a meandering shape.   4. The electric instrument carrier according to claim 1, wherein the voltage terminal contact is biased toward the electric instrument by an elastic member.   5. The electric instrument carrier according to claim 1, wherein the current measurement terminal and the voltage measurement terminal are both arranged on an upper surface of the terminal block. 6.

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