JP2013002923A - Plug socket adapter for test - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce load of wiring work and prevent short circuit when supplying a test power to a test circuit for checking stationary type power equipment.SOLUTION: A plug socket adapter 4 lying between a test circuit 2 for conducting a performance test of power equipment and a power supply device for generating test power supply to be supplied to the test circuit is used. The plug socket adapter 4 has a plug part 21 attached to an outlet 3b for outputting test power supply and a connection part 22 connected to a power supply line for supplying power to the test circuit. The connection part has multiple connection terminals 27 which is individually connected to a conductor for each polarity of the power supply line 17 and a partition part 28 of electric insulation provided between the adjacent connection terminals.

Description

  The present invention relates to a test outlet adapter that is interposed between a test circuit that performs a performance test on a power device and a power source that supplies a test power to the test circuit.

  Power plants and substations are equipped with large power equipment. This electric power device is subjected to a performance test periodically and as necessary. For example, an internal impedance is measured in a GPT (grounded instrument transformer) which is a kind of electric power equipment. In the measurement of internal impedance, it is necessary to supply a test AC power supply (hereinafter referred to as a test power supply) accurately determined to a specified current amount (60 mA, 40 mA) with little distortion and noise to the test circuit. For this reason, the power supply device (alternating current generator) which generates a test power supply from the commercial power supply of 100V or 200V is used.

  Since the power supply unit is provided with an outlet for supplying test power, when supplying test power to the test circuit, for example, one end of the power line is connected to the terminal block of the test circuit, while the other of the power line is connected. A plug is attached to the end. The plug is connected to the outlet of the power supply device. Note that one end of the power supply line may be connected to a circuit breaker (NFB) included in the test circuit. Moreover, the circuit breaker for wiring may be separately arrange | positioned between a test circuit and a power supply device.

  Wiring such a power supply line is a time-consuming work, which is a heavy burden in the test work. And since it is necessary to pay close attention not to cause a ground fault, a short circuit, or an electric shock, reduction of work load is strongly demanded.

  A commercial power supply may be used as a test power supply. Here, the power equipment to be tested is a large stationary type, and the test circuit is placed in the immediate vicinity of the power equipment. Therefore, a commercial power supply (test power supply) can be connected to the outlet from a location far from the power equipment to be tested. When receiving the supply, the power supply line must be laid for a long distance, which increases the work load.

  Here, in the following Patent Document 1, an electric device in which the plug portion is configured to be replaceable is disclosed in view of the circumstances in which the shape of the plug electrode varies from country to country.

JP 2010-211969 A

  As described above, in the performance test of electric power equipment, wiring work for electric power supply wires, particularly plug mounting work, contributes to increase the work load. In order to reduce the burden of plug installation work, it is conceivable to use a replaceable plug using the technique described in Patent Document 1, but in the performance test of the power device, wiring is performed for each power device. Therefore, there are few advantages by using a replaceable plug.

  Further, if a short circuit or a ground fault occurs in the wiring work for the electric power supply wire, it may cause a failure of the test circuit or the like. For this reason, it is necessary to avoid short circuits as much as possible.

  This invention is made | formed in view of such a situation, The objective is to reduce a burden of the wiring operation | work in the performance test of an electric power apparatus, and to prevent a short circuit etc.

  In order to solve the above problems, the present invention provides a test outlet adapter interposed between a test circuit for performing a performance test of a power device and a power supply for generating a test power supply to be supplied to the test circuit, A plug unit that is attached to a test power outlet that outputs a test power source; and a connection unit that is connected to a power line for supplying power to the test circuit. The connection unit is provided for each polarity of the power line. It has a plurality of connection terminals individually connected to the conductor, and an electrically insulating partition provided between adjacent connection terminals.

  According to the test outlet adapter of the present invention, since a plurality of connection terminals are provided, the power line connection work is facilitated, and the burden on the wiring work can be reduced. And since adjacent connection terminals are partitioned off by the partition part which has electrical insulation, the malfunction by which connection terminals are short-circuited by the electroconductive member (for example, wire, driver) etc. which are used at the time of wiring work can be prevented.

  In the test outlet adapter described above, the connection terminals are provided side by side in a state of protruding from the side of the case to the side, and the partition portion is a plate extending in the vertical direction intersecting the alignment direction of the connection terminals. When the upper end edge is positioned above the upper end of the connection terminal, it is possible to prevent a short circuit between the connection terminals even if a conductive member such as a wire or a driver falls from above.

  In the test outlet adapter described above, the connection terminal is formed on the inner peripheral surface of the first terminal portion in which a plug can be inserted in the inner space and the external thread is formed on the outer peripheral surface, and on the inner peripheral surface. In the case of the terminal terminal having the second terminal portion, the connection mode of the power supply line can be appropriately selected. For example, by positioning the crimp terminal connected to each conductor at the first terminal portion and tightening the second terminal portion, the power line and the connection portion can be electrically connected without requiring a special tool. Further, when a power supply line with a plug attached to the tip is used, the power supply line and the connection part can be electrically connected by inserting the plug into the first terminal part.

  In the test outlet adapter described above, when a switch is interposed between the plug portion and the connection portion, the supply or shut-off of the test power can be controlled on the adapter side, which improves usability.

  In the test outlet adapter described above, when the plug portion has a cord drawn from the case and a plug provided at the tip of the cord, the degree of freedom in handling is increased by the length of the cord, Usability is improved.

  ADVANTAGE OF THE INVENTION According to this invention, while reducing the burden of the wiring work in the performance test of an electric power apparatus, it can prevent a short circuit.

It is a block diagram explaining the schematic structure of a test system. It is a figure explaining the electrical structure of a test system. It is the figure which looked through and showed the inside about the outlet adapter of 1st Embodiment, (a) is a top view, (b) is a side view, (c) is the side view seen from the connection terminal side. (A) is a front view of a power supply device, (b) is the elements on larger scale of the power supply device which attached the outlet adapter. It is a figure explaining the attachment operation | work of a power wire, (a) is a figure explaining the state which positioned the crimp terminal attached to the front-end | tip of a power wire in the external thread part of a connection terminal, (b) is the internal thread part of a connection terminal It is a figure explaining the state which tightened and fixed the crimp terminal. It is a figure explaining the attachment operation | work of a power wire, (a) is a figure explaining a mode that a banana plug of a front-end | tip part is moved toward the male screw part of a connection terminal, (b) is a male screw part of a connection terminal. It is a figure explaining the state inserted in. It is a figure explaining the state which the wire which has electroconductivity fell, (a) is the figure which looked at the outlet adapter from the top, (b) is the figure seen from the connection part side. It is the figure which looked through and showed the inside about the outlet adapter of 2nd Embodiment, (a) is a top view, (b) is a side view, (c) is the side view seen from the connection terminal side. It is the figure which looked through and showed the inside about the outlet adapter of 3rd Embodiment, (a) is a top view, (b) is a side view, (c) is the side view seen from the connection terminal side. (A)-(c) is a figure explaining the extension cable used for the outlet socket adapter of 3rd Embodiment.

  The first embodiment of the present invention will be described below.

  First, a schematic configuration of the test system 1 will be described with reference to FIGS. 1 and 2. The illustrated test system 1 includes a test circuit 2, a power supply device 3, and an outlet adapter 4.

  The test circuit 2 is an electric circuit for performing a performance test of the measurement target device 5. Here, the measurement target device 5 is a large-sized (stationary type) power device installed in a power plant or a substation. For example, power devices such as transformers, circuit breakers, and disconnecting devices are applicable. Then, the internal impedance is measured by the test circuit 2 for the grounding transformer (GPT) 5A illustrated in FIG.

  The test circuit 2A used for the grounding transformer 5A includes a voltmeter 11, an ammeter 12, and a phase meter 13. The voltmeter 11 measures the voltage between the first phase input terminal U and the fourth phase input terminal O included in the grounding transformer 5A. The ammeter 12 measures the current flowing through the first phase input terminal U. The phase meter 13 uses the voltage as a reference and the current as an input, and measures the phase angle of the current with the voltage phase as a reference. The internal impedance of the grounding transformer 5A is calculated based on the voltage, current, and current phase obtained by the test circuit 2A.

  The power supply device 3 is a device that generates a test power supply supplied to the test circuit 2A from the commercial power supply 6 and outputs it from the outlet 3b. The test power source means a power source managed with high accuracy in voltage, current, frequency, and the like. As this power supply device 3, for example, an AC power supply (6900 series) manufactured by Measurement Technology Laboratory Co., Ltd. can be used. The power supply device 3 functions as a constant current source, and generates an AC test power supply in which the current is adjusted to be constant. This test power supply is a single-phase two-wire system, and one pole in the power supply line is a voltage line, and the other pole is a ground line. The test power is supplied to the primary side of the grounding transformer 5A through the test circuit 2.

  In the example of FIG. 2, the power supply device 3 includes a plug 14, a power supply circuit 15, and an outlet 3b. The plug 14 is a part that is attached to an outlet 6 a (outlet for supplying the commercial power supply 6) provided on the wall of the building, and receives the commercial power supply 6 through the plug 14. The power supply circuit 15 is a part that generates a test power supply from the supplied commercial power supply 6. The power supply circuit 15 generates a test power supply having a voltage, current, and frequency determined by a setting operation on a setting unit (not shown). The outlet 3b is a part that outputs the test power generated by the power supply circuit 15, and corresponds to a test power outlet. The outlet 3b is also a single-phase two-wire system, and a power supply voltage is output from one pole and the other pole is grounded. The plug 3 of the outlet adapter 4 is attached to the outlet 3b (described later).

  The outlet adapter 4 is interposed between the test circuit 2 </ b> A and the power supply device 3, and supplies test power from the power supply device 3 to the test circuit 2 </ b> A via the power supply line 17. As schematically shown in FIG. 2, the outlet adapter 4 includes a plug part 21, a connection part 22, and a switch 23. The plug portion 21 is a portion that is attached to the outlet 3 b provided in the power supply device 3. The connection part 22 is a part to which the power line 17 for supplying power to the test circuit 2A is connected. The switch 23 is interposed between the plug part 21 and the connection part 22, and supplies or shuts off the test power from the plug part 21 to the connection part 22.

  Hereinafter, the outlet adapter 4 will be described in detail.

  FIGS. 3A to 3C are diagrams illustrating the structure of the outlet adapter 4. In order to facilitate understanding, the inside of the outlet adapter 4 is shown in a transparent manner in these drawings.

  As shown in these drawings, the outlet adapter 4 has a box-shaped case 24, and the above-described plug portion 21, connection portion 22, and switch 23 are attached to the case 24. The illustrated case 24 is a thin box having a substantially square shape in plan view, and is made of a synthetic resin having electrical insulation. For convenience, in the following description, a square plate-like portion provided with the switch 23 is referred to as a top plate 24a, and a square plate-like portion located on the opposite side of the top plate 24a is referred to as a bottom plate 24b. A rectangular plate-like portion between each side of the top plate 24a and each side of the bottom plate 24b is referred to as a side plate 24c.

  Of the four side plates 24c, a pair of blades 25 project from one side plate 24c. These blades 25 are long and thin metal plates that are inserted into blade receptacles of an outlet 3b provided in the power supply device 3, and function as electrodes. One blade 25 corresponds to one pole in the test power source, and the other blade 25 corresponds to the other pole in the test power source. These blades 25 are provided in a state in which one half of the longitudinal direction protrudes from the side plate 24 c, and the remaining part is accommodated in the case 24. Further, an intermediate portion in the longitudinal direction is supported by an electrically insulating bushing 26 disposed on the back surface of the side plate 24 c, and a portion accommodated in the case 24 is connected to the switch 23.

  The plug portion 21 in the present embodiment includes a pair of blades 25, a side plate 24 c provided with these blades 25, and a bushing 26 that supports these blades 25.

  A pair of connection terminals 27 project from the side plate 24c located on the opposite side of the blade 25 toward the side in a side-by-side state. These connection terminals 27 are portions that are individually connected to the conductors for each polarity included in the power supply line 17. A banana jack is used for the connection terminal 27 of the present embodiment. This banana jack is a kind of terminal terminal, and a metal cylindrical terminal portion 27a (a first terminal) in which a plug (for example, a banana plug 17b to be described later) can be inserted into the inner space and a male screw is formed on the outer peripheral surface. Terminal portion) and a cylindrical movable screw portion 27b (second terminal portion) in which a female screw meshing with a male screw of the cylindrical terminal portion 27a is formed on the inner peripheral surface. The cylindrical terminal portion 27a is attached to the side plate 24c by a pair of metal nuts 27c disposed on the front and back surfaces of the side plate 24c. Each of the cylindrical terminal portions 27a is electrically connected to the switch 23 through the conductor plate 27d inside the case 24. On the other hand, the movable screw portion 27b is made of metal at the shaft center portion that meshes with the cylindrical terminal portion 27a, and a cylindrical grip portion made of synthetic resin is provided around the shaft center portion.

  An electrically insulating partition 28 is provided between the adjacent connection terminals 27. The partition portion 28 has a rectangular plate shape extending in the vertical direction intersecting the direction in which the connection terminals 27 are arranged, and is provided in series from the top plate 24a to the bottom plate 24b. Further, the partition portion 28 is made of a synthetic resin like the case 24.

  This partition part 28 is provided in order to prevent a short circuit between the connection terminals 27 as will be described later. For this reason, when the partition part 28 is seen from the arrangement direction of the connection terminals 27, the root part of the connection terminal 27 (specifically, the metal part exposed on the side plate 24c side from the movable screw part 27b). It is set to a size that can be hidden. An end of the partition 28 on the switch 23 side (upper edge in use) is located on the top plate 24a side (upper side in use) of the connection terminal 27.

  In the present embodiment, the connection portion 22 includes a pair of connection terminals 27, a side plate 24c on which the connection terminals 27 are provided, and a partition portion 28 erected from the side plate 24c.

  In this connection terminal 27, the movable screw portion 27 b is tightened in a state where the crimp terminal 17 a of the power line 17 is positioned on the cylindrical terminal portion 27 a, so that the nut and the movable screw portion 27 b located on the surface side of the side plate 24 c The crimp terminal 17a can be fixed and can be connected to each conductor of the power line 17. Further, by inserting the banana plug 17b attached to the tip of the power supply line 17 into the inner space of the cylindrical terminal portion 27a, connection with each conductor of the power supply line 17 can be performed.

  As described above, the switch 23 is electrically connected to each of the pair of blades 25 and the pair of cylindrical terminal portions 27a. That is, it is interposed between these blades 25 and the cylindrical terminal portion 27a. The switch 23 electrically connects or disconnects the one blade 25 and the one cylindrical terminal portion 27a, and the other blade 25 and the other cylindrical terminal portion 27a. For this reason, when the switch 23 is turned on in a state where the plug portion 21 is attached to the outlet 3 b (see FIG. 4) of the power supply device 3, the test power is supplied to the cylindrical terminal portion 27 a through the blade 25. On the other hand, when the switch 23 is turned off, the test power is not supplied to the cylindrical terminal portion 27a.

  Next, a method of using the outlet adapter 4 configured as described above will be described.

  In the power supply device 3 illustrated in FIG. 4A, a power switch 3a is provided at the left end of the front surface, and an outlet 3b that outputs a test power supply is provided at the right end of the front surface. A display device 3c and operation buttons 3d are provided between the power switch 3a and the outlet 3b. And as shown in FIG.4 (b), the outlet adapter 4 is attached to the power supply device 3 by inserting each blade 25 of the plug part 21 in the outlet 3b, and is used in this attachment state.

  For example, when connecting the distal end portion of the power line 17 to the outlet adapter 4 (each connection terminal 27), as shown in FIG. 5A, the crimp terminal 17a is attached to the distal end portion of the power line 17, and the power line 17 The conductors of the respective poles included in and the crimp terminal 17a are connected. Thereafter, the crimp terminal 17a is positioned on the corresponding cylindrical terminal portion 27a, and the crimp terminal 17a is fixed by tightening the movable screw portion 27b as shown in FIG. 5B. As described above, the connection terminal 27 included in the outlet adapter 4 includes a cylindrical terminal portion 27a having a male screw formed on the outer peripheral surface, and a movable screw portion having a female screw meshing with the male screw of the cylindrical terminal portion 27a formed on the inner peripheral surface. 27b, the crimp terminal 17a of the power line 17 can be easily fixed by loosening or tightening the movable screw portion 27b. That is, it is possible to reduce the work load for the wiring work of the power supply line 17.

  The switch 23 is turned off when the outlet adapter 4 is attached to the power supply device 3. Then, as indicated by the arrow A in FIG. 5B, each crimp terminal 17a is fixed and then turned on. By performing such an operation, problems such as a short circuit and a ground fault can be prevented when the power supply line 17 is connected to the connection terminal 27.

  When the connection is made using the banana plug 17b shown in FIG. 6A, the banana plug 17b is first attached to the tip of the power line 17. The power supply line 17 can be attached to the banana plug 17b depending on the type of the banana plug 17b. First, after the front end portion of the power supply line 17 is split into two, the covering is removed to expose the conductors of each pole. Next, the banana plug 17b is separated into a cylindrical cover part and a metal main body part, and the cover part is inserted into one of the two parts. And a cover part is fixed to a main-body part in the state which made the conductor contact the main-body part. Attach the other side of the fork by the same procedure.

  When the banana plug 17b is attached, as shown by the arrow B in FIG. 6A, the banana plug 17b is moved toward the inner space of the cylindrical terminal portion 27a and inserted into this inner space. . By inserting the banana plug 17b, the power line 17 and the connection terminal 27 are electrically connected. Here, the attachment of the banana plug 17b to the power line 17 is an easy operation as described above. And the operation | work which connects the power wire 17 to the connection terminal 27 is also an easy operation | work which only inserts the banana plug 17b in the cylindrical terminal part 27a. For this reason, a work burden can be reduced for the wiring work of the power supply line 17.

  In addition, between the pair of connection terminals 27, a plate-shaped partition portion 28 having electrical insulation is provided along a direction (specifically, an orthogonal direction) intersecting the alignment direction of the connection terminals 27. ing. By providing the partition portion 28, even if a metal member such as a wire or a driver falls, a short circuit between the connection terminals 27 can be prevented. For example, as shown in FIGS. 7A and 7B, even if the wire X falls, the wire X abuts against one connection terminal 27 and the partition portion 28, but does not contact the other connection terminal 27. Since they are not in contact with each other, a short circuit between the connection terminals 27 can be prevented.

  Next, a second embodiment of the outlet adapter will be described.

  FIGS. 8A to 8C are diagrams illustrating the outlet adapter 4A according to the second embodiment, which corresponds to FIG. 3 described above. As shown in this figure, the basic configuration of the outlet adapter 4A of the second embodiment is the same as that of the outlet adapter 4 of the first embodiment. For this reason, the same code | symbol is attached | subjected to the part which takes the same structure as the outlet adapter 4 of 1st Embodiment, and description is abbreviate | omitted. And the outlet adapter 4A of 2nd Embodiment is demonstrated centering on difference with 1st Embodiment.

  The difference between the outlet adapter 4A of the second embodiment and the outlet adapter 4 of the first embodiment is largely the following three points. (1) The plug portion 31 includes a plug 32 and a cord 33. (2) The partition portion 28A is configured in an inverted E shape. (3) The case 24A has a large thickness, and the connection terminal 27 is provided on the side close to the top plate 24a. (4) Leg portions 34 are provided at the four corners of the bottom surface of the case 24A.

  First, the plug part 31 will be described. The plug portion 31 in the present embodiment includes a plug 32, a cord 33, a side plate 24c, and a bushing 26A. The plug 32 is a part to be inserted into the outlet 3 b (test power outlet) of the power supply device 3, and has a main body 35 and a blade 36. The blade 36 is a portion to be inserted into the receiving blade of the outlet 3b, like the blade 25 of the first embodiment. The main body 35 is a portion in which the ends of the blade 36 and the cord 33 are accommodated, and the blade 36 and the cord 33 are electrically connected inside the main body 35. The cord 33 is a portion provided between the plug 32 and the case 24A, and supplies test power. The other end of the cord 33 opposite to the plug 32 is accommodated in the case 24 </ b> A and connected to the switch 23. Therefore, the test power can be supplied to the connection terminal 27 or cut off by turning on / off the switch 23. The bushing 26A is a member that is disposed on the back surface of the side plate 24c and supports the cord 33.

  Next, the partition part 28A will be described. The partition portion 28A of the present embodiment is configured in an inverted E shape in which two U-shaped members having an open top are connected side by side. The left and right sides and the lower side of each connection terminal 27 are partitioned by the partition portion 28A. The partition portion 28A is also provided so as to protrude laterally from the surface of the side plate 24c on which the connection terminal 27 is provided. And the protrusion length to the side is defined to such an extent that the base part of the connection terminal 27 is hidden, similarly to the first embodiment.

  Next, the case 24A and the leg 34 will be described. The thickness of the case 24A is determined to be approximately twice that of the case 24A of the first embodiment. And the connection terminal 27 is attached to the position near the top plate in the side plate 24c. In addition, leg portions 34 are provided at the four corners of the bottom plate 24b. These leg portions 34 are provided on the assumption that the outlet adapter 4A is placed on the floor surface, and are constituted by a cylindrical member having electrical insulation. A disc-shaped magnet 34 a is provided at the tip of the leg 34. The magnet 34a can be easily fixed to the wall surface made of iron plate.

  In the outlet adapter 4A configured as described above, the plug portion 31 includes the plug 32 and the cord 33, so that the degree of freedom for the installation location of the outlet adapter 4A is increased by the length of the cord 33. Thereby, usability can be improved. Further, the left and right sides and the lower side of each connection terminal 27 are surrounded by an electrically insulating partition 28A, the connection terminal 27 is brought close to the top plate side, and the leg portion 34 is provided on the bottom plate 24b. Since it is provided, when the case 24A or the like is placed on the floor surface, a sufficient clearance can be secured between the floor surface and each connection terminal 27, and a problem that the connection terminal 27 is grounded can be suppressed.

  Next, a third embodiment of the outlet adapter will be described.

  FIGS. 9A to 9C are diagrams for explaining the outlet adapter 4B of the third embodiment, and correspond to FIGS. 3 and 8 described above. As shown in this figure, the basic configuration of the outlet adapter 4B of the third embodiment is the same as that of the outlet adapter 4A of the second embodiment. Therefore, the outlet adapter 4B of the third embodiment will be described focusing on the differences from the second embodiment. In addition, in FIG. 9, about the part corresponding to the outlet adapter 4A of 2nd Embodiment, B is attached | subjected to the end of a code | symbol, and description is abbreviate | omitted.

  The difference between the outlet adapter 4B of the third embodiment and the outlet adapter 4A of the second embodiment is that the outlet adapter 4B of the third embodiment corresponds to a three-phase three-wire system, and the power supply circuit 3 is 200V. Used for specifications. For this reason, the plug 32B and the cord 33B of the plug part 31B, the switch 23B, and each connection terminal 27B are used corresponding to each of the three poles (that is, each phase). The outlet adapter 4B of the third embodiment also has the same effects as the outlet adapter 4B of the second embodiment.

  In addition, regarding the outlet adapter 4B of 3rd Embodiment, usability can be improved further by using the extension cables 41-61 shown to Fig.10 (a)-(c).

  An extension cable 41 shown in FIG. 10A connects a plug portion 43 provided with a blade 42 for three holes, an outlet portion 44 for the blade 42, and the plug portion 43 and the outlet portion 44. And a code 45. Further, the extension cable 51 shown in FIG. 10B connects the plug portion 53 provided with the blade 52 for four holes, the outlet portion 54 having three holes, and the plug portion 53 and the outlet portion 54. And a code 55. Similarly, the extension cable 61 shown in FIG. 10C also includes a plug portion 63 provided with a blade 62 for four holes, a three-hole outlet portion 64, and the plug portion 63 and the outlet portion 64. And a cord 65 to be connected. The extension cables 51 and 61 also function as conversion cables.

  Then, by extending the cord 33B (see FIG. 9) of the plug portion 31B using the extension cable 41 shown in FIG. 10A, the degree of freedom increases in the installation place of the outlet adapter 4B. Further, by interposing extension cables 51 and 61 shown in FIGS. 10B and 10C, the degree of freedom is increased in the installation location of the outlet adapter 4B, and the outlet 3b of the power supply device 3 is connected to the plug 32B of the outlet adapter 4B. The outlet adapter 4B can be used even if the shape does not match the above.

  By the way, the description regarding each above embodiment is for making an understanding of this invention easy, and does not limit this invention. The present invention can be changed and improved without departing from the spirit and purpose of the present invention, and the present invention naturally includes equivalents thereof. For example, you may comprise as follows.

  The partition portions 28, 28 </ b> A, 28 </ b> B are not limited to a plate shape as long as the adjacent connection terminals 27, 27 </ b> B can be partitioned. For example, it may be U-shaped so as to partition the left and right and lower sides of one of the connection terminals 27 and 27B, or may be a semi-cylindrical shape obtained by dividing the cylinder into two in the axial direction.

  The connection terminals 27 and 27B are exemplified by banana jacks, but any terminal that can be easily connected to the conductor of the power supply line 17 can be used as the connection terminals 27 and 27B. For example, an army terminal or a Johnson terminal may be used.

  Regarding the switch 23, a light emitting unit such as an LED may be built in, and the light emitting unit may be turned on in an on state (energized state). If comprised in this way, the malfunction which will perform a connection work in an ON state can be prevented reliably, and the further improvement in usability can be aimed at.

  Regarding the test power supply, in the above-described embodiment, the case where the power is output from the power supply device 3 has been described. For this reason, the outlet adapter 4B is connected to the outlet 3b of the power supply device 3. Here, if the commercial power source 6 can be used as the test power source, the outlet adapter 4B may be attached to the outlet 6a that outputs the commercial power source 6 provided on the wall of the building or the like. In this case, the outlet 6a corresponds to a test power outlet.

  The test outlet adapter according to the present invention is naturally applicable to other test circuits of transformers, circuit breakers, and disconnectors.

DESCRIPTION OF SYMBOLS 1 ... Test system, 2 ... Test circuit, 2A ... Test circuit for earthing transformers, 3 ... Power supply device, 3a ... Power switch, 3b ... Outlet, 3c ... Display device, 3d ... Operation button, 4 ... First Embodiment Outlet adapter, 4A ... Outlet adapter of the second embodiment, 4B ... Outlet adapter of the third embodiment, 5 ... Measurement target device, 5A ... Grounding transformer, 6 ... Commercial power supply, 6a ... Outlet for commercial power supply, 11 ... Voltmeter, 12 ... Ammeter, 13 ... Phase meter, 14 ... Plug, 15 ... Power supply circuit, 17 ... Power supply line, 17a ... Crimp terminal, 17b ... Banana plug, 21 ... Plug part, 22 ... Connection part, 23 ... Switch 24 ... case 24A ... case 24B ... top plate 24b ... bottom plate 24c ... side plate 25 ... blade 26 ... bushing 26A ... bushing 26B Bushing, 27 ... Connection terminal, 27B ... Connection terminal, 27a ... Cylindrical terminal part, 27b ... Moving screw part, 27c ... Metal nut, 27d ... Conductor plate, 28 ... Partition part, 28A ... Partition part, 28B ... Partition part , 31 ... plug part, 32 ... plug, 33 ... cord, 34 ... leg part, 34a ... magnet, 35 ... main body part, 36 ... blade, 41 ... extension cable, 42 ... blade, 43 ... plug part, 44 ... outlet part 45 ... Cord, 51 ... Extension cable, 52 ... Blade, 53 ... Plug part, 54 ... Outlet part, 55 ... Cord, 61 ... Extension cable, 62 ... Blade, 63 ... Plug part, 64 ... Outlet part, 65 ... Cord , U ... first phase input terminal, V ... second phase input terminal, W ... third phase input terminal, O ... fourth phase input terminal

Claims (5)

A test outlet adapter interposed between a test circuit that performs a performance test of a power device and a power source that generates a test power source supplied to the test circuit,
A plug unit attached to a test power outlet that outputs the test power;
A connecting portion connected to a power line for supplying power to the test circuit,
The connecting portion is
A plurality of connection terminals individually connected to the conductor for each polarity provided in the power supply line;
A test outlet adapter comprising an electrically insulating partition provided between adjacent connection terminals. The connection terminal is
It is provided side by side in a state protruding from the case side to the side,
The partition is
2. The test according to claim 1, wherein the connection terminals are in a plate shape extending in a vertical direction intersecting with the arrangement direction of the connection terminals, and an upper end edge is located above an upper end of the connection terminals. Outlet adapter. The connection terminal is
A terminal terminal having a first terminal portion in which a plug can be inserted into the inner hollow portion and a male screw formed on the outer peripheral surface, and a second terminal portion formed on the inner peripheral surface of a female screw meshing with the male screw. The outlet receptacle adapter for testing according to claim 1 or 2.   The test outlet adapter according to any one of claims 1 to 3, wherein a switch is interposed between the plug portion and the connection portion. The plug part is
The code drawn from the case,
The test outlet adapter according to claim 1, further comprising a plug provided at a tip of the cord.

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