JP2006164914A - Connection apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection apparatus capable of securing the safety of operation in the measurement of electrical characteristics, improving operation efficiency by using a plurality of measurement apparatuses simultaneously, enabling an operation at a high place which prevents the increase of an operating time. <P>SOLUTION: The connection apparatus is equipped with a terminal table 101 for connection, a connection box 102 and a lead wire 103. The terminal table 101 for connection includes apparatus-side terminal parts 1a to 1c for electrically connecting a test terminal and the end of the lead wire 103 and a terminal table casing 2 composed of an insulating body for covering the apparatus-side terminals 1a to 1c with a face other than a connection surface with the test terminal. The connection box 102 includes apparatus-side terminals 22a to 22c for electrically connecting the other end of the lead wire 103 with the lead wire 103 of the measurement apparatus and a connection box casing 12 composed of an insulation body for covering the apparatus-side terminal parts 22a to 22c having openings 13a to 13c for connecting the apparatus-side terminals 22a to 22c and the lead wire 103 of the measurement apparatus 31. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a connecting device, and more particularly, to a connecting device for electrically connecting a test terminal for measuring electrical characteristics and a measuring instrument.

  In transformer substations or customer distribution facilities, instrument transformers are installed to measure voltage, current, power, and harmonics in the power transmission state using energy meters and power supply / demand composite meters. The Here, the instrument transformer is for converting a large current or voltage into a current or voltage having a magnitude suitable for measurement.

  The secondary side of the instrument transformer is provided with a plurality of terminals for measurement (hereinafter referred to as instrument test terminals), and various measurements can be made by connecting a power meter and a combined power supply / demand instrument to these terminals. Done. In many cases, an instrument transformer is incorporated in a part of equipment in a substation or a distribution facility of a customer.

  Here, as a general measuring method, there is a method of connecting a test terminal for an instrument and a clip of a lead wire of the measuring instrument.

  Moreover, the terminal cover of patent document 1 can make a hole in the cover which covers a terminal, and a measuring rod can contact a terminal through the hole. With such a configuration, it is possible to prevent a short circuit disaster and a grounding accident.

By the way, when a plurality of measuring instruments are used at the same time, there may be a shortage of space for connecting the clip of the lead wire from the plurality of measuring instruments to the instrument test terminal. In such a case, one end of a supplementary wire that satisfies the specified safety requirements such as tightening strength is connected to the test terminal for the instrument, and the other end of the supplementary wire is secured for safety such as insulation. The measurement is performed by performing the necessary protective processing and connecting the other end of the supplementary wire to the clip of the lead wire from the measuring instrument.
Japanese Patent Laid-Open No. 9-245854

  However, in the method of connecting the test terminal for an instrument and the clip of the lead wire of the measuring instrument and the method using the terminal cover described in Patent Document 1, the door of the equipment is not closed by the lead wire of the measuring instrument, and the charged part is exposed. There is a risk that an operator may accidentally touch the charged part and cause an electric shock. In addition, when measuring voltage, etc., it is necessary to connect multiple instrument test terminals to the lead wires of the instrument. There was a problem that there was a high risk of short-circuit disasters and grounding accidents.

  Further, in the measurement using a plurality of measuring instruments at the same time, there is a problem that the measuring work may not be performed because there is not enough space to connect the lead clips from the plurality of measuring instruments with only the test terminal for the instrument. It was. Further, when the instrument test terminal is at a high place, there is a problem that the lead wire of the measuring instrument is not long enough to connect the measuring instrument lead wire and the instrument test terminal.

  On the other hand, the method using the supplementary line has a problem that the working time increases due to the preparation of the supplementary line and the protection process.

  Therefore, the object of the present invention is to ensure the safety of work in measuring electrical characteristics, to improve work efficiency by using a plurality of measuring instruments at the same time, to cope with work at high places, and To provide a connecting device capable of preventing an increase in time.

  In order to solve the above-mentioned problems, a connecting device according to the present invention is a connecting device for electrically connecting a test terminal for measuring electrical characteristics and a measuring instrument, and is electrically connected to the test terminal. A terminal block electrically connected to the measuring instrument, and a lead wire electrically connecting the terminal block and the connection box. The terminal block electrically connects the test terminal and one end of the lead wire. Including a device side terminal portion to be connected, and a terminal block housing portion made of an insulator covering the device side terminal portion with a surface other than the connection surface with the test terminal, and the connection box includes the other end of the lead wire and the measuring instrument. A measuring instrument side terminal portion that electrically connects the lead wire and an insulator covering the measuring instrument side terminal portion, and has an opening for connecting the measuring instrument side terminal portion and the lead wire of the measuring instrument.

  Preferably, the measuring instrument side terminal portion is made of a plate-like conductor arranged such that the main surface is not parallel to the bottom surface of the junction box housing portion.

  More preferably, the opening is arranged in a direction in which the measuring instrument side terminal portion is extended in a direction from the bottom surface side of the connection box housing portion toward the ceiling side of the connection box housing portion.

  Preferably, the measuring instrument side terminal portion is made of a plate-like conductor disposed so that the main surface is substantially perpendicular to the bottom surface of the junction box housing portion.

  According to the present invention, work safety is ensured in the measurement of electrical characteristics, work efficiency is improved by using a plurality of measuring instruments at the same time, work in high places is supported, and work time is increased. Can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of a connection device according to an embodiment of the present invention.

  With reference to the figure, this connection tool includes a connection terminal block 101, a connection box 102, and a lead wire 103 with a terminal.

  The connection terminal block 101 includes device-side terminal portions 1 a to 1 c, a terminal block housing portion 2, and a grip portion 3.

  The connection box 102 includes measuring instrument side terminal portions 11 a to 11 c and a connection box housing portion 12.

  The terminal lead wire 103 includes terminal block side terminal portions 21 a to 21 c, connection box side terminal portions 22 a to 22 c, and a lead wire 23.

[Details of Configuration of Connection Terminal Block 101]
The device-side terminal portions 1a to 1c are blade-shaped terminals for electrical connection with instrument test terminals and round shapes for electrical connection with terminal block side terminal portions 21a to 21c of the lead wire 103 with terminal. Terminal. In addition, the apparatus side terminal parts 1a-1c and the terminal block side terminal parts 21a-21c are detachable.

  The terminal block housing portion 2 is an insulator that covers the device-side terminal portions 1a to 1c with a surface other than the connection surface with the instrument test terminal. And the apparatus side terminal parts 1a-1c are covered with the terminal block housing | casing part 2 and equipment at the time of a connection with equipment. Here, the back surface of the surface connected to the grip portion 3 in the terminal block housing portion 2 is the connection surface to the instrument test terminal.

  The grip portion 3 is used for simplifying the connection work by being used when the connection terminal block 101 and the equipment are connected.

[Details of configuration of connection box 102]
The measuring instrument side terminal portions 11a to 11c are conductors electrically connected to the connection box side terminal portions 22a to 22c of the lead wire 103 with terminal. Moreover, the measuring device side terminal portions 11a to 11c and the measuring device 31 can be electrically connected by sandwiching the measuring device side terminal portions 11a to 11c with the clip 33 of the lead wire 32 from the measuring device 31.

  Moreover, the shape of the measuring instrument side terminal portions 11a to 11c is a plate shape that can be easily sandwiched between clips, and a plurality of clips can be sandwiched therebetween. Furthermore, the main surfaces of the measuring instrument side terminal portions 11a to 11c are arranged so as to be perpendicular to the bottom surface of the junction box housing portion 12, so that the operator can easily pinch the measuring instrument side terminal portions 11a to 11c with clips. Is arranged.

  The junction box housing part 12 is made of an insulator that covers the measuring instrument side terminal parts 11a to 11c. The connection box housing part 12 can be opened and closed on the ceiling surface, and the operator opens the ceiling surface, sandwiches the clip 33 between the measuring instrument side terminal portions 11a to 11c, and closes the ceiling surface at the time of measurement.

  Here, the junction box housing portion 12 has an opening for connecting the measuring device side terminal portions 11 a to 11 c and the measuring device 31. With such a configuration, the measuring instrument side terminal portions 11 a to 11 c and the measuring instrument 31 can be connected via the lead wires 32 even when the ceiling surface of the connection box housing section 12 is closed.

  Moreover, the opening parts 13a-13c are each arrange | positioned in the direction which extended the measuring device side terminal parts 11a-11c in the direction which goes to the ceiling side from the bottom face side of the connection box housing | casing part 12. FIG. With such a configuration, the lead wire can be drawn linearly from the clip 33 toward the openings 13a to 13c, and the connection state of the measuring instrument side terminal portions 11a to 11c and the clip 33 can be stabilized.

  The dimensions of each part of the connection device according to the present embodiment are, for example, the width d1 of the terminal block housing 2 in the connection terminal block 101 is 175 mm, the depth d2 is 35 mm, the height d3 is 40 mm, and the width d4 of the grip 3. Is 65 mm and the height d5 is 80 mm. Further, the width d11 of the connection box housing 12 in the connection box 102 is 180 mm, the depth d12 is 120 mm, the height d13 is 100 mm, and the height d14 on the bottom side of the connection box housing 12 is 50 mm. Moreover, the length of the lead wire 23 of the lead wire 103 with a terminal is 2 m.

  FIG. 2 is a diagram showing a state in which the connection terminal block 101 according to the present embodiment is connected to the instrument test terminal in the instrument transformer.

  With reference to the figure, instrument test terminals 42 a to 42 c are arranged on an instrument test board 41, and are connected to the device side terminal portions 1 a to 1 c of the connection terminal block 101. The terminal block housing part 2 covers the measuring instrument side terminal parts 11a to 11c. The gap between the terminal block housing 2 and the instrument test panel 41 is actually very narrow, and the possibility of an electric shock disaster, a line short-circuit disaster, and a grounding accident is extremely low.

  By the way, in the method of connecting the test terminal for the instrument and the clip of the lead wire of the measuring instrument and the method using the terminal cover described in Patent Document 1, there is a risk that an operator accidentally contacts the charged part and an electric shock disaster occurs. is there. In addition, when the interval between the test terminals for each instrument is narrow, there is a problem that there is a high risk that a line-to-line short-circuit disaster or a grounding accident will occur when a lead wire clip is attached.

  And in the measurement which uses a several measuring device simultaneously, there existed a problem that the space which connects the clip of the lead wire from a some measuring device was insufficient, and a measurement operation | work might not be able to be performed. Further, when the instrument test terminal is at a high place, there is a problem that the lead wire of the measuring instrument is not long enough to connect the measuring instrument lead wire and the instrument test terminal.

  In addition, the method using the supplementary line has a problem that the working time increases due to the preparation of the supplementary line and the protection process.

  However, in the connection tool according to the embodiment of the present invention, the terminal block housing portion 2 of the connection terminal block 101 is insulated so as to cover the device side terminal portions 1a to 1c with a surface other than the connection surface with the instrument test terminal. Is the body. Thereby, the terminal side housing | casing part 2 and equipment equipment can cover apparatus side terminal parts 1a-1c at the time of a connection with equipment, and an electric shock disaster, a line short circuit disaster, and a grounding accident can be prevented.

  Moreover, the shape of the measuring instrument side terminal portions 11a to 11c in the connecting terminal block 101 according to the embodiment of the present invention is a plate shape in which the measuring instrument side terminal portions 11a to 11c are easily sandwiched between clips, and a plurality of clips are arranged. Can be pinched. Thereby, a several measuring device can be used simultaneously.

  Moreover, the junction box housing | casing part 12 in the junction box 102 which concerns on embodiment of this invention consists of an insulator which covers the measuring device side terminal parts 11a-11c. The connection box housing part 12 can be opened and closed on the ceiling surface, and the operator opens the ceiling surface, sandwiches the clip 33 between the measuring instrument side terminal portions 11a to 11c, and closes the ceiling surface at the time of measurement. And the junction box housing | casing part 12 has an opening part for the connection of the measuring device side terminal parts 11a-11c and the measuring device 31. FIG. With such a configuration, the measuring device side terminal portions 11a to 11c and the measuring device 31 can be connected via the lead wires 32 even when the ceiling surface of the connection box housing portion 12 is closed. Can prevent line-to-line short-circuit disasters and grounding accidents.

  Further, the connection terminal block 101 and the connection box 102 can be electrically connected via the lead wire 103 with a terminal according to the embodiment of the present invention, and the measuring instrument even when the instrument test terminal is at a high place. 31 and the instrument test terminals 42 a to 42 c can be connected via the lead wire 103 with a terminal.

  Actually, when a measuring operation was performed by connecting a plurality of measuring instruments to the instrument test terminal using the connection tool according to the present embodiment, it took about 39 minutes from the preparation of the operation to the completion of the operation. However, the time required from the work preparation to the work completion is about 28 minutes, and the work time can be greatly reduced.

  As described above, in the connection device according to the embodiment of the present invention, work safety is ensured in the measurement of electrical characteristics, work efficiency is improved by using a plurality of measuring devices at the same time, and work at a high place. It is possible to prevent the increase in working time.

[Modification]
The present invention is not limited to the above embodiment, and includes, for example, the following modifications.

(1) Shapes of measuring device side terminal portions 11a to 11c The measuring device side terminal portions 11a to 11c in the connection box 102 according to the embodiment of the present invention are plate-shaped that can be easily sandwiched between clips. is not. Any shape may be used as long as a plurality of clips can be sandwiched.

(2) Arrangement of measuring device side terminal portions 11a to 11c The main surfaces of measuring device side terminal portions 11a to 11c in connection box 102 according to the embodiment of the present invention are perpendicular to the bottom surface of connection box housing portion 12. However, the present invention is not limited to this. Any arrangement may be used as long as the measuring instrument side terminal portions 11a to 11c and the measuring instrument 31 can be electrically connected.

  For example, if the main surfaces of the measuring instrument side terminal portions 11 a to 11 c are arranged so as not to be parallel to the bottom surface of the connection box casing portion 12, the measuring instrument side terminal portions 11 a to 11 c of the connection box casing portion 12. Even if connected in a tilted state rather than perpendicular to the bottom surface, the measuring device side terminal portions 11a to 11c can be sandwiched between the clips 33 of the lead wires 32 from the measuring device 31.

  Further, even if the main surfaces of the measuring instrument side terminal portions 11a to 11c are arranged in parallel with the bottom surface of the junction box housing portion 12, the clip 33 of the lead wire 32 from the measuring instrument or the conductor portion of the lead wire 32 is taped. The measuring instrument side terminal portions 11a to 11c and the measuring instrument 31 can be electrically connected by fixing them to the measuring instrument side terminal portions 11a to 11c.

(3) Arrangement of Openings 13a to 13c Openings 13a to 13c in connection box 102 according to the embodiment of the present invention are directed from the bottom surface side of connection box housing part 12 to the ceiling side of the connection box housing part. However, the measuring instrument side terminal portions 11a to 11c are arranged in the extended direction. However, the present invention is not limited to this. Any arrangement is possible as long as the measuring instrument side terminal portions 11a to 11c and the measuring instrument 31 can be connected via the lead wires 32 even when the ceiling surface of the connection box housing section 12 is closed. But you can.

(4) Lead wire with terminal 103
In the lead wire 103 with a terminal according to the embodiment of the present invention, the terminal block side terminal portions 21a to 21c are electrically connected to the device side terminal portions 1a to 1c in the connection terminal block 101, and the connection box in the connection box 102 is connected. Although it was set as the structure electrically connected with the side terminal parts 22a-22c, it is not limited to this. It can be set as the structure which the lead wire 23 directly connects with the apparatus side terminal parts 1a-1c and the connection box side terminal parts 22a-22c.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a figure which shows the structure of the connection tool which concerns on embodiment of this invention. It is a figure which shows the state which connected the terminal block 101 for a connection which concerns on embodiment of this invention, and the test terminal for instruments in the instrument transformer.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 101 Terminal block for connection, 102 Connection box, 103 Lead wire with terminal, 1a-1c Device side terminal part, 2 Terminal block housing part, 3 Grip part, 11a-11c Measuring device side terminal part, 12 Connection box housing part , 21a to 21c Terminal block side terminal part, 22a to 22c Junction box side terminal part, 23 Lead wire, 31 Measuring instrument, 32 Lead wire, 33 clip, 41 Instrument test panel, 42a to 42c Instrument test terminal.

Claims (4)

A connection device for electrically connecting a test terminal and a measuring instrument for measuring electrical characteristics,
A terminal block electrically connected to the test terminal;
A junction box electrically connected to the measuring instrument;
A lead wire for electrically connecting the terminal block and the connection box;
The terminal block is
A device-side terminal portion for electrically connecting the test terminal and one end of the lead wire;
A terminal block housing portion made of an insulator covering the device side terminal portion with a surface other than the connection surface with the test terminal;
The junction box is
A measuring instrument side terminal portion for electrically connecting the other end of the lead wire and the lead wire of the measuring instrument;
A connection instrument comprising a junction box housing portion made of an insulator covering the measuring instrument side terminal portion and having an opening for connecting the measuring instrument side terminal portion and a lead wire of the measuring instrument.   The connection instrument according to claim 1, wherein the measuring instrument side terminal portion is composed of a plate-like conductor disposed so that a main surface thereof is not parallel to a bottom surface of the junction box housing portion.   The connecting device according to claim 2, wherein the opening is arranged in a direction in which the measuring device side terminal portion is extended in a direction from the bottom surface side of the connection box housing portion toward the ceiling side of the connection box housing portion.   The connection instrument according to claim 1, wherein the measuring instrument side terminal portion is composed of a plate-like conductor disposed so that a main surface thereof is substantially perpendicular to a bottom surface of the junction box housing portion.

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