JP2009121897A - Stationary terminal for electric energy meter systematization and electric energy meter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve downsizing and efficient systematization when an electric energy meter and related electric equipment are systematized to be installed in a stationary terminal. <P>SOLUTION: The stationary terminal for electric energy meter systematization 1 in which an electric energy meter 2 and related electric equipment can be installed comprises: a power-source side terminal 6 and a load side terminal 7 which are arranged side by side at the lowermost part; an electric energy meter space 11 provided at the uppermost part; a communications unit space 12 provided below the electric energy meter space and above the power-source side terminal; a switchgear space 13 which is arranged laterally adjacent to the communications unit space below the electric energy meter space, and above the load side terminal and also functions as a connection bar space; and an uninterruptible bypass device space 14 provided in front of the power-source side terminal and the load side terminal. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a watt-hour meter systemization stationary terminal for systematically mounting various electric devices related to a watt-hour meter, and an watt-hour meter that can be attached thereto.

  A unit-type watt-hour meter in which a watt-hour meter, a communication device, a switchgear, and the like are unitized has been proposed in Japanese Patent Laid-Open No. 2006-170787 (Patent Document 1).

In this case, a plurality of unit sections are provided on the surface of the unit joint portion, and a watt hour meter, a communication device, a switchgear, and the like are attached to these unit sections.
JP 2006-170787 A

  In Patent Document 1, a plurality of unit sections are arranged vertically with the same width. Therefore, the watt-hour meter, the communication device, the switchgear and the like all have the same width, and there is a difficulty in miniaturization.

  Moreover, the device for short circuit is not made about the short circuit unit which short-circuits a terminal when not equipped with a switchgear.

  Furthermore, since the terminal arrangement of the watt-hour meter unit is different from the terminal arrangement of the current watt-hour meter, it cannot be adapted to the current test bench or installation environment, and in cases where multi-functionalization is not required. The watt-hour meter unit cannot be used alone and is an expensive system.

(Object of the present invention)
A first object of the present invention is to provide a stationary terminal for watt-hour meter systemization that can be miniaturized and efficiently systemized when the watt-hour meter and related electric devices are systematized and attached. That is.

  The second object of the present invention is to use it without requiring a stationary terminal for systematization of the watt-hour meter when it is possible to cope with the current test bench and installation environment and when multi-function is not required. It is to provide a watt hour meter that can be attached to a stationary terminal for watt hour meter systemization.

  In order to achieve the first object, the present invention is a watt-hour meter system stationary terminal to which a communication device, a connection bar, a switchgear, and an uninterruptible bypass device can be attached together with a watt-hour meter. A power supply side terminal portion to which a power supply side electric wire is connected and a load side terminal portion to which a load side electric wire is connected and a power amount provided at the top and to which the watt hour meter is attached A meter space, a communication device space provided below the watt-hour meter space and above the power supply side terminal portion, to which the communication device is attached, and arranged in the lateral direction of the communication device space, the watt-hour meter space An opening / closing device space that also serves as a connection bar space, and is connected to the connection bar or the opening / closing device, and the power supply side terminal portion and the load side. An uninterruptible bypass device space that is provided in front of the child unit and to which the uninterruptible bypass device is attached, and a power supply conductor for supplying power to the watt-hour meter and the communication device from the power supply side terminal unit Connection terminal for watt hour meter and connection terminal for communication device, and for switchgear provided on load conductor for connecting the watt hour meter to the load side terminal via the connection bar or switchgear It has a connection terminal part, and the connection terminal part for uninterruptible bypass devices provided in the said power supply conductor and the said load conductor.

  In order to achieve the second object, the present invention can be attached to the wattmeter systematization stationary terminal in which the connecting terminal portion for the wattmeter provided on the power supply conductor is a rod-shaped terminal. The watt hour meter is characterized in that the power supply side terminal is installed on the left side, the load side terminal is installed on the right side, and the power supply side terminal and the load side terminal are arranged in a horizontal row. .

  ADVANTAGE OF THE INVENTION According to this invention, when watt-hour meter and related electric equipment are systematized and attached, it can reduce in size and can systemize efficiently.

  In addition, according to the present invention, the watt hour meter that can be attached to the stationary terminal for watt hour systematization can be adapted to the current test bench and installation environment, and when multi-functionalization is not required, It can be used without requiring a stationary terminal for watt-hour meter systemization.

  The best mode for carrying out the present invention is as described in Examples described later.

  FIG. 1 shows a single-phase three-wire watt-hour meter systemized stationary terminal (hereinafter simply referred to as a stationary terminal) according to an embodiment of the present invention, in which only an electronic watt-hour meter and a connection bar are attached and covered with a cover. Indicates the state. FIG. 2 shows a state where the cover is removed from the state of FIG.

  An electronic watt-hour meter 2 is mounted on the top of the stationary terminal 1. The electronic watt-hour meter 2 has a display window 3 on the front. The cover 4 covers a portion below the terminal block of the electronic watt-hour meter 2. The connection bar 5 connects the load-side conductor to the electronic watt-hour meter 2 when the switchgear is not attached. The electronic watt-hour meter 2 is shaped to be downsized in the vertical direction as compared with the current meter so as to meet the object of the present invention.

As shown in FIG. 2, the power supply side terminal portion 6 to which the power supply side electric wire is inserted from below and connected by tightening the terminal screw and the load to which the load side electric wire is inserted from below and connected by tightening of the terminal screw are connected. A side terminal portion 7 is provided side by side in the lowermost portion of the stationary terminal 1. The power supply side terminal portion 6 and the load side terminal portion 7 have a terminal arrangement and position to which an existing electric wire can be connected. And those electric wire insertion holes are expanded rather than the current measuring instrument made into object. For example, the terminal of the 30A meter can be connected up to 22 mm ² , but can be connected up to 38 mm ² . Thereby, it can respond also to a nonconforming electric wire.

  FIG. 3 shows mounting positions of the electronic watt-hour meter 2, the communication device 8, the opening / closing device 9, the connection bar 5, and the uninterruptible bypass device 10 that can be mounted on the stationary terminal 1. A watt hour space 11 to which the electronic watt hour meter 2 is attached is provided at the top of the stationary terminal 1. A communication device space 12 to which the communication device 8 is attached is provided below the watt hour space 11 and above the power supply side terminal portion 6. The opening / closing device space 13 to which the connection bar 5 or the opening / closing device 9 is attached is provided below the watt-hour space 11 and above the load-side terminal portion 7, along the lateral direction of the communication device space 12. The switch space 13 also serves as a connection bar space. The uninterruptible bypass device space 14 to which the uninterruptible bypass device 10 is attached is provided in front of the power supply side terminal portion 6 and the load side terminal portion 7. The opening / closing device 9 and the connection bar 5 have the same vertical and horizontal dimensions. Further, it is desirable that the communication device 8, the opening / closing device 9, and the connection bar 5 have the same vertical dimension. The total lateral dimension of the communication device 8 and the switchgear 9 is preferably equal to or smaller than the lateral dimension of the electronic watt-hour meter 2.

  The communication device 8 is for remotely setting the electronic watt-hour meter 2 and reading the meter, and to support future AMR (Automatic Meter Reading) and AMM (Advanced Meter Management). In addition, although communication between the electronic watt-hour meter 2 and the communication apparatus 8 is not illustrated, it is performed by wire or wireless (infrared communication).

  The switchgear 9 opens and closes power supply to the load.

  The uninterruptible bypass device 10 short-circuits the power-side terminal unit 6 and the load-side terminal unit 7 when the electronic watt-hour meter 2 is replaced or when the switchgear 9 and the connection bar 5 are replaced. is there.

  FIG. 4 shows electrical connection between conductors and connection terminal portions provided on the stationary terminal 1. Inside the stationary terminal 1, a power supply conductor 15 extending from the power supply side terminal portion 6 (1S terminal to 3S terminal) upward to the watthour space 11 is provided. Further, a load conductor 16 extending from the load side terminal portion 7 (1L terminal to 3L terminal) to the switchgear space 13 upward is provided. No conductor is provided in the electricity meter space 11 and the switch space 13.

  The power supply conductor 15 for supplying power to the electronic wattmeter 2 and the communication device 8 from the power supply side terminal portion 6 is provided with a wattmeter connection terminal portion 17 and a communication device connection terminal portion 18. The watt-hour connecting terminal portion 17 is a rod-shaped terminal as shown in FIG. The communication device connection terminal portion 18 is a screw fixing terminal as shown in FIG.

  The load conductor 16 for connecting the electronic watt-hour meter 2 to the load-side terminal portion 7 via the connection bar 5 or the switching device 9 is provided with a switching device connection terminal portion 19. The connection terminal portion 19 for the switchgear is a screw fixing terminal as shown in FIG.

  The power supply conductor 15 and the load conductor 16 are provided with an uninterruptible bypass device connection terminal portion 20. The uninterruptible bypass device connection terminal portion 20 is a screw fixing terminal as shown in FIG.

  The seal 21 (FIG. 3) of the electronic watt-hour meter 2 is applied by the Japan Electric Meters Certification Authority. Seal 22 (FIG. 3) of cover 4 is applied by the electric power company.

(Use of electronic watt-hour meter 2 only)
In this case, as shown in FIG. 2, the electronic watt hour meter 2 is attached to the watt hour space 11, and the connection bar 5 is attached to the switch space 13. As shown in FIG. 5, the electrical connection in this case is such that the watt-hour meter connection terminal portion 17 is connected to the power source side terminal portion of the electronic watt-hour meter 2 and the load-side terminal of the electronic watt-hour meter 2. The part is connected to the connection terminal part 23 at the upper end of the connection bar 5. In addition, the connection terminal portion 24 at the lower end of the connection bar 5 is connected to the switchgear connection terminal portion 19 (FIG. 3) of the load conductor 16. The connection terminal portion 23 at the upper end of the connection bar 5 is a rod-shaped terminal as shown in FIG. The connection terminal portion 24 at the lower end of the connection bar 5 is a screw fixing terminal as shown in FIG.

(Replacement of the electric watt-hour meter 2 with no power failure)
In this case, as shown in FIG. 6, the uninterruptible bypass device 10 is attached to the uninterruptible bypass device space 14. And the connection terminal part 25 of the uninterruptible bypass device 10 is connected to the connection terminal part 20 (FIG. 4) for uninterruptible bypass devices. As shown in FIG. 7, the electrical connection in this case is such that the power supply side terminal section 6 and the load side terminal section 7 are short-circuited, so that even if the electronic watt-hour meter 2 is removed, the load will fail. Absent. Thereafter, a new electronic watt-hour meter 2 'is attached.

(Addition of communication device 8)
In this case, the communication device 8 is attached to the communication device space 12 as shown in FIG. Then, the connection terminal portion 26 of the communication device 8 is connected to the communication device connection terminal portion 18 (FIG. 3). In the electrical connection in this case, as shown in FIG. 9, a power supply voltage is applied to the communication device 8 from the communication device connection terminal portion 18. Since the power supply side terminal portion 6 and the load side terminal portion 7 are connected by the stationary terminal 1, the electronic watt-hour meter 2, and the connection bar 5, the communication device 8 can be attached and detached without a power failure. . Even when the opening / closing device 9 is attached instead of the connection bar 5, the communication device 8 is arranged on the power supply side from the opening / closing device 9, so that the communication operation is performed even if the opening / closing device 9 is shut off. be able to. Therefore, it is possible to cope with setting changes, AMR, and AMM of the electronic watt-hour meter 2.

(Addition of switchgear 9)
Before the switchgear 9 is attached, as shown in FIG. 10, the uninterruptible bypass device 10 is first attached to the uninterruptible bypass device space 14. The connection bar 5 is removed, and the opening / closing device 9 is attached to the opening / closing device space 13. In this case, as shown in FIG. 11, the connection terminal portion 27 at the upper end of the switching device 9 is connected to the load side terminal portion of the electronic watt-hour meter 2 and the connection terminal portion 28 at the lower end is opened and closed. It is connected to the device connection terminal 19. The connection terminal portion 27 at the upper end of the switchgear 9 is a rod-shaped terminal as shown in FIG. The connection terminal portion 28 at the lower end of the switchgear 9 is a screw fixing terminal as shown in FIG.

  Since the power supply side terminal portion 6 and the load side terminal portion 7 are short-circuited by the uninterruptible bypass device 10, the load will not fail even if the connection bar 5 is removed. Thereafter, the opening / closing device 9 is attached.

  The power supply to the load is stopped by the shut-off operation of the switchgear 9. Moreover, the stop of the power supply to the load is released by the closing operation of the switchgear 9. The operation of the opening / closing device 9 can be remotely operated by the communication device 8.

  As described above, since the communication device space 12 and the switchgear device space 13 are arranged side by side in the horizontal direction, the size can be reduced. Further, when the opening / closing device 9 is not used, the connection bar 5 is attached to the opening / closing device space 13 which also serves as the connection bar space, so that the size can be further reduced and the system can be efficiently made. it can.

  Further, since the cover 4 is sealed by the electric power company, wattmeter-related electric devices such as the communication device 8 and the switchgear 9 can be placed under the control of the electric power company.

  When it is not necessary to make the electronic watt-hour meter multifunctional, as shown in FIG. 12, only the electronic watt-hour meter 2 and the cover 4 are used without using the stationary terminal 1. The cover 4 covers the terminal block 29 of the electronic watt-hour meter 2. The terminal arrangement of the terminal block 29 is the same as the current instrument. That is, the power supply side terminal portion 30 is installed on the left side, the load side terminal portion 31 is installed on the right side, and the power supply side terminal portion 30 and the load side terminal portion 31 are arranged in a horizontal row. The power supply side terminal portion 30 and the load side terminal portion 31 include a power supply side wire and a load side wire or a terminal fitting having a wire insertion hole into which the rod-like terminals 17, 23, 27 are inserted from below, a power supply side wire and a load side wire. Alternatively, each has a terminal screw for fastening the rod-shaped terminal to the terminal fitting.

  Since the watt-hour connection terminal portion 17 provided on the power-side conductor 15 of the stationary terminal 1 is a rod-shaped terminal, the terminal arrangement and positions of the power-side terminal portion 30 and the load-side terminal portion 31 of the electronic watt-hour meter 2 Can be the same as current instruments. Therefore, when multi-functionalization is not required, the electronic watt-hour meter 2 can be used alone without being attached to the stationary terminal 1, and cost reduction can be achieved.

  Moreover, the electronic watt-hour meter 2 can be adapted to the current test stand and installation environment.

  The present invention can be applied not only to a single-phase three-wire system but also to a single-phase two-wire system, a three-phase three-wire system, a three-phase four-wire system, and the like.

It is a perspective view which shows the state where only the electronic watt-hour meter and the connection bar were attached to the stationary terminal for systematization of the single-phase three-wire watt-hour meter system that is an embodiment of the present invention and covered with a cover. It is a perspective view which shows the state from which the cover was removed from the stationary terminal for watt-hour meter systemization of FIG. It is a perspective view which shows the mounting position of the electronic watt-hour meter, communication apparatus, switchgear, connection bar, uninterruptible bypass apparatus which can be mounted | worn with the watt-hour meter systemization stationary terminal of FIG. It is a circuit diagram which shows the electrical connection of the conductor of the stationary terminal for watt-hour meter systemization of FIG. 1, and a connection terminal part. It is a circuit diagram which shows the electrical connection of the stationary terminal for watt-hour meter systemization in the state of FIG. It is a perspective view which shows the case where the electronic watt-hour meter of the stationary terminal for watt-hour meter systemization of FIG. 1 is replaced | exchanged. It is a circuit diagram which shows the electrical connection in the case of replacing | exchanging the electronic watt-hour meter of the stationary terminal for watt-hour meter systemization of FIG. It is a perspective view which shows the case where a communication apparatus is added to the stationary terminal for watt-hour meter systemization of FIG. It is a circuit diagram which shows the electrical connection in the case of adding a communication apparatus to the stationary terminal for watt-hour meter systematization of FIG. It is a perspective view which shows the case where an opening / closing apparatus is added to the stationary terminal for watt-hour meter systematization of FIG. It is a circuit diagram which shows the electrical connection in the case of adding a switchgear to the stationary terminal for watt-hour meter systematization of FIG. It is a perspective view which shows use with an electronic watt-hour meter alone.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stationary terminal for watt-hour meter systemization 2 Electronic watt-hour meter 4 Cover 5 Connection bar 6 Power supply side terminal part 7 Load side terminal part 8 Communication device 9 Switchgear 10 Uninterruptible bypass device 11 Electricity meter space 12 Communication device space DESCRIPTION OF SYMBOLS 13 Switchgear space 14 Uninterruptible bypass device space 15 Power supply conductor 16 Load conductor 17 Wattmeter connection terminal portion 18 Communication device connection terminal portion 19 Switchgear connection terminal portion 20 Uninterruptible bypass device connection terminal portion 21 , 22 Seal 30 Power supply side terminal part 31 of electronic watt-hour meter Load side terminal part of electronic watt-hour meter

Claims (4)

Along with a watt hour meter, a communication terminal, connection bar, switchgear, uninterruptible bypass device can be mounted on a watt hour meter system stationary terminal,
Provided side by side in the lowest part, a power-side terminal portion to which a power-side electric wire is connected and a load-side terminal portion to which a load-side electric wire is connected,
A watt hour space provided at the top and to which the watt hour meter is attached;
A communication device space provided below the watt-hour space and above the power supply side terminal portion, to which the communication device is attached;
A switchgear space that also serves as a connection bar space, which is provided in the lateral direction of the communication device space, below the watt-hour meter space and above the load side terminal portion, and to which the connection bar or the switchgear is attached. When,
An uninterruptible bypass device space provided in front of the power supply side terminal portion and the load side terminal portion, to which the uninterruptible bypass device is attached,
A connection terminal part for a watt hour meter and a connection terminal part for a communication device provided on a power supply conductor for supplying power to the watt hour meter and the communication device from the power supply side terminal part;
A connection terminal part for a switchgear provided on a load conductor for connecting the watt-hour meter to the load side terminal part via the connection bar or the switchgear;
A stationary terminal for watt-hour meter system comprising a connection terminal portion for an uninterruptible bypass device provided on the power supply conductor and the load conductor.   A cover covering the communication device space, the switchgear device space, the uninterruptible bypass device space, the power supply side terminal portion and the load side terminal portion is provided, and the cover is sealed by an electric power company. The stationary terminal for watt-hour meter systematization of Claim 1.   The watt-hour meter system-use stationary terminal according to claim 1, wherein the watt-hour meter connection terminal portion is a rod-shaped terminal. An watt-hour meter attachable to the stationary terminal for systematization of the watt-hour meter according to claim 3,
A watt-hour meter characterized in that a power supply side terminal portion is installed on the left side, a load side terminal portion is installed on the right side, and the power supply side terminal portion and the load side terminal portion are arranged in a horizontal row.

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