JP5036499B2 - Energy meter and its connection adapter - Google Patents

Description

  The present invention relates to a watt-hour meter and its connection adapter, and more particularly to a watt-hour meter that makes the replacement work of the watt-hour meter safe and easy.

  Conventionally, commercial power supplied to a load device in each home has been charged by measuring (measuring) the power consumption due to the operation of the load device with a watt hour meter. Need to be replaced regularly.

This watt-hour meter is directly connected to a distribution line that supplies commercial power, and the replacement work is performed after the supply of commercial power is stopped. However, depending on the commercial power supply destination, it is difficult to make a power failure timing, so an uninterruptible exchange terminal block (connection adapter) that realizes replacing the watt hour meter without stopping the power supply is proposed (For example, refer to Patent Document 1).
JP 2004-95407 A

  However, in such an uninterruptible replacement of the conventional watt hour meter, the watt hour meter is replaced after securing the supply of commercial power by short-circuiting the connection terminals connected to the watt hour meter. Has realized that. For this reason, in such an uninterruptible replacement of the watt-hour meter, during the replacement work, the connection terminal in a conductive state is exposed as a so-called charging unit on the side of the electric wire that continues to supply electric power, It may cause a ground fault short circuit and is dangerous.

  Further, in such an uninterruptible replacement of the watt hour meter, the connection terminal connected to the watt hour meter is short-circuited, so that the supply of commercial power is continued without going through the watt hour meter. There has been a disadvantage that the amount of power consumed during the watt-hour meter replacement operation cannot be measured.

  In addition, when replacing the watt hour meter, if the connection timing is wrong, the power supply will be temporarily cut off, resulting in malfunctions. There was annoyance that it was not possible.

  Therefore, the present invention avoids so-called exposure of the charging unit and allows the watt-hour meter to be replaced while continuing to supply commercial power. An object of the present invention is to provide a watt-hour meter itself and a connection adapter for the watt-hour meter that can perform cumulative measurement of consumption and can easily and safely exchange the watt-hour meter without mistakes.

1st invention of the connection adapter of the watt-hour meter which solves the said subject is connected to the watt-hour meter which is installed in the distribution line which supplies the commercial power from a power supply to a consumer, and integrates the power consumption of this consumer A connection adapter that connects the meter side terminal connected to the watt hour meter side, the wire side terminal connected to the distribution line side, the other circuit side terminal connected to conduct a separate circuit, and the continuity between these terminals. A disconnecting means for disconnecting, between the instrument side terminal, the electric wire side terminal, and the separate circuit side terminal. It is designed in a switch form that is selectively switched between a parallel connection mode for conducting and a temporary connection mode for conducting between a wire side terminal and another circuit side terminal.

  In the present invention, the power consumption supplied from the distribution line to the load device or the like can be integrated by the watt hour meter by selectively switching the connection / disconnection means to the steady connection mode. In addition, by selecting and switching to the parallel connection mode, the power consumption can be integrated with the watt-hour meter and a separate circuit can be connected. For example, a separate watt-hour meter can be connected in parallel as a separate circuit. Power consumption can be distributed and integrated. Furthermore, by selectively switching to the temporary connection mode, the meter side terminal can be disconnected from the wiring line, and the power consumption can be integrated and measured with a watt hour meter connected to another circuit. Therefore, only by switching the connection means in the form of a switch, while the power consumption is integrated and measured with a separate watt hour meter, the terminal part connected to the watt hour meter is disconnected from the distribution line and does not become a charging part. The replacement work can be performed.

  The second invention of the connecting adapter of the watt-hour meter that solves the above-mentioned problem is that, in addition to the specific matters of the first invention, the various terminals and the disconnecting means are connected in parallel between the steady connection mode and the temporary connection mode. It is characterized by being arranged in a positional relationship for executing switching connection via the connection mode.

  In this invention, connection between various terminals can be performed so that the parallel connection mode continues between the steady connection mode and the temporary connection mode, and there is no timing when the watt hour meter is not connected to the distribution line side. As such, the connection can be made. Therefore, it is possible to more reliably integrate and measure the power consumption during the watt-hour meter replacement operation.

  The third invention of the connection adapter of the watt-hour meter that solves the above-mentioned problem is that, in addition to the specific matter of the first or second invention, the watt-hour meter includes a power supply side distribution line for supplying commercial power, It is a case of a type that integrates between the lead-in distribution line connected to a load device that consumes commercial power and integrates the power consumption, and corresponds to each of the input side and output side of the wire side terminal The electric wire side short-circuit terminal, which is disposed at a position where the input side and the output side are conducted, is provided separately from the separate circuit side terminal, and the connection means includes the electric wire side terminal and the electric wire side short terminal. It is designed to be able to selectively switch the short-circuit connection mode in which the connection between the input side and the output side of the wire-side terminal is short-circuited.

  In this invention, it is also applied to a watt-hour meter that is interposed between the power supply side distribution line and the lead-in side distribution line and integrates power consumption. By selectively switching between the mode and the temporary connection mode, the power consumption supplied from the power supply side distribution line to the lead-in side distribution line can be integrated or measured separately. In addition, by selecting and switching to the short-circuit connection mode, the power-side distribution line on the input side and the lead-in distribution line on the output side of the wire-side terminal can be connected to the short-circuit terminal on the wire side and short-circuited. Even if it is not necessary to distribute and integrate power consumption by connecting meters in parallel, or even if a separate watt-hour meter is not prepared, a watt-hour meter with a commercial power supply secured from the distribution line Can be exchanged. Therefore, it is possible to perform various watt-hour meter replacement operations by simply switching the switch-type connecting / disconnecting means while separating the terminal portion connected to the watt hour meter from the distribution line so as not to become a charging portion. .

  The fourth invention of the watt-hour connection adapter that solves the above-mentioned problems is that, in addition to the specific matters of the third invention, the various terminals and the disconnecting means are at least a steady connection mode, a parallel connection mode, or a temporary connection mode. After the short-circuit connection mode is executed at the same time as any one of the above, it is arranged in a positional relationship capable of switching connection that shifts only to the short-circuit connection mode.

  In the present invention, connection between various terminals can be performed so that the short-circuit connection mode continues between the steady connection mode, the parallel connection mode, or the temporary connection mode, and there is no timing at which the supply of commercial power is interrupted. As such, the connection can be made. Therefore, the watt-hour meter can be replaced while ensuring the supply of commercial power.

  In addition to the specific matters of any one of the first to fourth inventions, the fifth terminal of the watt-hour connection adapter that solves the above-described problem is characterized in that the various terminals are electrically connected to a connection part for connecting an electric wire. The case is provided with a connecting portion, and the case includes a slide member that is slidably mounted in a horizontal direction with respect to a connecting direction of the electric wire to the connecting portion, and the connection means is integrated with the slide member. The terminal is connected to each other by sliding the slide member in the horizontal direction.

  In this invention, it is possible to selectively switch various modes by disconnecting the connection between the various terminals simply by sliding a slide member constituting one surface such as the front side of the case in which each terminal is housed. Therefore, connection / disconnection between a plurality of terminals can be performed in a lump, facilitating the connection / disconnection operation so that the timing is not mistaken and safe.

  The sixth invention of the connection adapter of the watt-hour meter that solves the above-described problem is the fixing means for fixing the slide member to the case body at the switching position in the steady connection mode in addition to the specific matter of the fifth invention. The fixing means is designed so that the slide member can be positioned and fixed at the switching position of each mode other than the steady connection mode.

  In this invention, the slide member for selecting and switching various modes can be positioned and fixed for each mode. Therefore, it is possible to prevent the slide member from inadvertently sliding and shifting to another mode, and the watt-hour meter can be exchanged safely.

  1st invention of the watt-hour meter which solves the said subject is a watt-hour meter installed in the distribution line which supplies the commercial power from a power supply to a consumer, and integrates the said power consumption, Comprising: It connects to the distribution line side The connection adapter mechanism according to any one of the first to sixth inventions is incorporated in the connection terminal block in which the electric wire side terminals are arranged, and the instrument side terminal is connected to the main part of the watt hour meter. It is characterized by being.

  In this invention, without preparing as a connection adapter, a connection terminal block capable of selecting the above-mentioned various modes is attached in advance, and a terminal for connecting to a watt hour meter simply by switching the switch-type connection means Replacing the watt hour meter with a separate watt hour meter while ensuring the supply of commercial power or integrating and measuring power consumption with a separate watt hour meter Can do.

  Here, the connection / disconnection means includes a conductive plate that is installed in the slide member in a posture that extends in the slide direction of the slide member and is orthogonal to the inner surface of the slide member, while the various terminals are The so-called knife switch may be designed to have a deformed terminal shape in which the conductive plate is slidably pressed and contacted to be conductively connected. By adopting such a structure, it is easy to design. In addition, connection / disconnection operation between terminals can be realized.

  In addition, the instrument side terminal and the electric wire side terminal are disposed at positions separated from each other in the sliding direction of the slide member, and the separate circuit side terminal is disposed at a position adjacent to the electric wire side terminal. The conductive plate material extends in the separation direction of the instrument side terminal and the electric wire side terminal, and disconnects the conductive contact between the terminals, and extends in parallel with the main connection portion. And a secondary connection part that disconnects the conductive contact with the other circuit side terminal, and the main connection part is connected from the instrument side terminal after the secondary connection part is conductively contacted with the separate circuit side terminal. On the other hand, by designing the secondary connection part to be separated from the terminal on the other circuit side after the main connection part is in conduction contact with the instrument side terminal, the above-mentioned steady connection mode, parallel connection mode and temporary connection mode It is possible to smoothly transition between various modes without a blank period.

  Furthermore, the watt-hour meter is interposed between a power supply side distribution line that supplies commercial power and a lead-side distribution line that is connected to a load device that consumes the commercial power, and integrates and measures the power consumption. In the case of the type, the wire-side short-circuit terminal disposed at the corresponding position on the input side and the output side of the wire-side terminal and conducting between the input side and the output side is a separate circuit side terminal. Separately, the conductive plate is disposed on the opposite side of the instrument-side terminal and adjacent to the wire-side terminal, and the conductive plate is separated from the instrument-side terminal after the main connection and disconnection portion is in conductive contact with the wire-side short-circuit terminal. Or by designing the sub-connecting part to be separated from the separate circuit terminals, and smoothly between the various modes of the above-mentioned steady connection mode, parallel connection mode, temporary connection mode, and short-circuit connection mode without a blank period. Can be migrated.

  As described above, according to the present invention, by simply switching the switch-type connecting / disconnecting means, the terminal part connected to the watt hour meter is disconnected from the distribution line so as not to become a charging part, and the watt hour meter is used. It is possible to realize commercial power integration measurement, commercial power integration measurement using a separate watt-hour meter, and commercial power distribution measurement distributed using a parallel-connected watt-hour meter. Therefore, the watt-hour meter can be replaced easily and safely without mistakes while continuing to supply and measure power.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, the best embodiment of the invention will be described with reference to the drawings. FIGS. 1-13 is a figure which shows 1st Embodiment of the connection adapter of the watt-hour meter which concerns on this invention.

  In FIG. 1, the connection adapter 10 consumes the watt-hour meter 100 shown in FIGS. 2 and 3, distribution lines (power supply side distribution lines) 201 to 203 that supply commercial power from a commercial power source, and the commercial power. The watt-hour meter 100 is connected to the lead-in wires (pull-side distribution wires) 204 to 206 that are supplied to each household where the load device is installed. In this state, the supply of commercial power to a load device such as each home is ensured, and the power consumption by the load device is integrated (measured) by the watt-hour meter 100.

  Here, as shown in FIGS. 2 and 3, the watt-hour meter 100 includes a main body 101 that accumulates consumed power and electric wires 201 to 206 between a commercial power source and a load device such as each household. And a connection terminal block 102 connected so that the main body 101 is interposed in the middle. The connection terminal block 102 includes input terminals 111 to 113 for connecting input wires (distribution wires) 201 to 203 from a commercial power source to the main body 101 and output wires (lead wires) 204 to 206 to the load device side. Output terminals 114 to 116 connected to the main body 101 are disposed, and the terminals 111 to 116 of the connection terminal block 102 can be inserted with, for example, conductive wires from which the coating on the front end side of the electric wires is peeled off. A conductive connection can be established by inserting into a not-shown insertion hole opened on the lower end surface side and tightening with two tightening screws 121 and 122 respectively. Further, the connection terminal block 102 is designed so that the terminals 111 to 116 are not exposed to the outside by covering the insulating cover 103 so as to cause an electric shock / short circuit accident. It can be attached by inserting 104 into the screw hole 105 and screwing.

  The connection adapter 10 is installed so as to face and face the bottom of the insertion port of the connection terminal block 102 of the watt-hour meter 100, and corresponds to each of the terminals 111 to 116 of the connection terminal block 102. A connecting unit 11 is installed in the insulating case 12. Also, in this connection adapter 10, the insulating cover 13 (FIG. 4) prevents the electric shock / short circuit accident from being caused by the terminal portion of the connection unit 11 being exposed to the outside and the conductor being inserted carelessly. Can also be closed by inserting the mounting screw 13a into the screw hole 12a and screwing it together. Although not shown in the figure, for example, the insulating cover 13 is slidably inserted into slide grooves provided on both sides of the insulating case 12 so that the connecting terminal block 102 of the watt hour meter 100 can be slid. It is designed to be a slide member that can move horizontally by sliding in the direction approaching or separating from the screw, and is fixedly mounted by screwing the mounting screw 13a into the screw hole 12a. In FIG. 1, a state in which the mounting screw 13a is screwed only into the screw hole 12a on one side is illustrated, but the purpose is to illustrate the screw hole 12a. Needless to say, the mounting screws 13a are screwed together.

  The connection unit 11 is mounted between the conductor blocks 21 to 23 made of a conductive material that is positioned and fixed in the insulating case 12, and is attached to the inner surface side of the insulating cover 13 so as to slide between the conductor blocks 21 to 23. And connection plates 25 and 26 for cutting off (disconnecting) the conductive connection or the conduction. The connection unit 11 includes terminals 111 to 116 of the connection terminal block 102 of the watt-hour meter 100, power distribution lines 201 to 203 on the power supply side for supplying commercial power, and lead-in wires 204 on the load device side for supplying the commercial power. 206 are positioned and fixed in parallel in the insulating case 12 so as to correspond to each other, and are installed in the insulating case 12 in a state where insulation between adjacent ones is secured. ing.

  The conductor block 21 is positioned and fixed on the side close to the terminals 111 to 116 of the connection terminal block 102 of the watt-hour meter 100 at intervals. As shown in FIGS. 4A and 5, the conductor block 21 has an insertion hole (connection portion) into which a conductive wire of an electric wire can be inserted from the sliding direction of the insulating cover 13, as with the terminals 111 to 116. ) 21a is opened at the opposite end face, and the conductive wires inserted into the insertion holes 21a can be connected to each other by tightening them with the two tightening screws 28, respectively.

  The conductor block 22 is positioned and fixed on the side that is separated at intervals corresponding to the terminals 111 to 116 of the connection terminal block 102 of the watt-hour meter 100. As shown in FIG. 4A and FIG. 5, the conductor block 22 has an insertion hole 22a into which the conductive wire of the electric wire can be inserted, as shown in FIGS. Conductive connection can be established by tightening the conductive wires inserted into the insertion holes 22a with two tightening screws 28, respectively.

  The conductor block 23 is positioned and fixed at an adjacent position in a state in which insulation with respect to the conductor block 22 is ensured. As shown in FIG. 5, the conductor block 23 has an insertion hole 23 a into which the conductive wire of the electric wire can be inserted on the opposite end surface as the conductor block 22, and the conductive block 23 is inserted into the insertion hole. Conductive connection can be established by tightening the wires with two tightening screws 28 respectively. Here, this conductor block 23 is adjacent to the conductor block 22 by being disposed so as to be located inside the input terminals 111 to 113 and the output terminals 114 to 116 of the connection terminal block 102 of the watt-hour meter 100. It is parallel to the position to be.

  The connection / disconnection plate 25 is installed so as to extend in the direction in which the conductor blocks 21 and 22 are separated from each other, and can be moved from a position where both the conductor blocks 21 and 22 are conductively connected to a position where they are conductively connected to only one of them. Is attached.

  The connection / disconnection plate 26 extends in a posture parallel to the connection / disconnection plate 25 and is electrically connected to the connection / disconnection plate 25 via a conduction plate 27. The connection / disconnection plate 25 moves in the same direction as the connection / disconnection plate 25 and moves to the conductor block. 23 is movably attached to a position where it is conductively connected to 23 and a position where it is disengaged from the conductive connection state.

  As a result, the conductor block 21 is inserted into the insertion hole 21a with the conductive wire of the electric wire 29 conductively connected to the terminals 111 to 116 of the connection terminal block 102 of the watt hour meter 100 and tightened with the tightening screw 28. The input terminals 111 to 113 and the output terminals 114 to 116 can be electrically connected. Similarly, the conductive wires of the power distribution lines 201 to 203 for supplying commercial power are inserted into the conductor blocks 22 at positions corresponding to the input terminals 111 to 113 of the connection terminal block 102 of the watt hour meter 100. In the conductor block 22 at a position corresponding to the output terminals 114 to 116 of the connection terminal block 102, the conductive wires of the lead-in wires 204 to 206 on the load device side for supplying the commercial power are inserted into the insertion holes. Each of them can be electrically connected by being inserted into 22a and tightened with a tightening screw 28.

  Further, the conductor block 23 is inserted by inserting the conductive wire of the electric wire 30 conductively connected to a circuit device different from the watt-hour meter 100 connected to the conductor block 21 into the insertion hole 23 a and tightening it with the tightening screw 28. Similarly, a conductive connection can be made.

  Therefore, the connection unit 11 electrically connects the main body 101 of the watt-hour meter 100 to the distribution lines 201 to 203 and the lead-in wires 204 to 206 when the connection / disconnection plate 25 is conductively connected to both the conductor blocks 21 and 22. In addition, it is possible to cut off the conduction state by connecting the connection / disconnection plate 25 to only one of the conductor blocks 21 and 22, and to connect the distribution lines 201 to 203 and the lead-in wires 204 to 206. I can refuse. At the same time, the connection unit 11 can electrically connect or disconnect the connection / disconnection plate 26 connected to the connection / disconnection plate 25 to the conductor block 23 via the connection plate 27. A separate circuit can be connected to or disconnected from the distribution lines 201 to 203 and the incoming lines 204 to 206. That is, the conductor block 21 is an instrument side terminal, the conductor block 22 is an electric wire side terminal, the conductor block 23 is a separate circuit side terminal, and the connection plates 25 and 26 are connection means. Yes.

  Specifically, as shown in FIGS. 4 and 5, the conductor blocks 21 to 23 are connected to the back side of the tightening screw 28 for screwing the conductive wires of the electric wires inserted into the insertion holes 21 a to 23 a. A pair of electrode plates 21b to 23b are provided upright, which are brought into conduction by being pressed against and sandwiched between both sides of the cut plates 25 and 26. As shown in FIG. 6, the electrode plates 21 b to 23 b are in contact with each other by smoothly inserting the detached connection plates 25 and 26 by expanding both ends of the connection plates 25 and 26 on the moving direction side. It is formed so that it can be in a state. That is, the connection plates 25 and 26 constitute a conductive plate material extending in the sliding direction, and the electrode plates 21b to 23b of the conductor blocks 21 to 23 sandwich the connection plates 25 and 26 so as to be slidable and are brought into pressure contact. The so-called knife switch is designed to have a deformed structure so that the connection / disconnection operation can be easily performed.

  In the conductor blocks 21 to 23, the standing positions of the electrode plates 21b to 23b are set according to the relative positions of the connection plates 25 and 26 together with the lengths of the connection plates 25 and 26. The length of the connecting / disconnecting plate 25 is set so that both of the electrode plates 21b, 22b of the blocks 21, 22 can be electrically connected, and the electrode plates 22b, 23b of the conductor blocks 22, 23 are connected to the connecting plates 25, 26. It is erected at a position shifted in the length direction. The connection / disconnection plate 26 moves toward the one conductor block 21 while the connection / disconnection plate 25 is conductively connected to both of the electrode plates 21b and 22b of the conductor blocks 21 and 22, whereby the electrode plate 23 b of the conductor block 23 is moved. On the contrary, the connecting / disconnecting plate 25 moves in a direction away from the electrode plate 21b of the conductor block 21, so that the conductor block 23 and the electrode plate 22b simultaneously move. The length is set so as to be conductively connected to the electrode plate 23b.

  The connection plates 25 and 26 are partition plates erected on the inner surface side of the insulating cover 13 that closes the insulating case 12 while the conductor blocks 21 to 23 are positioned and fixed in the insulating case 12. The partition plate 31 is mounted on the insulating case 12 side so as to be reciprocated by being slid in the direction along the side surface of the conductor block 21 located between the conductor blocks 22 and 23. It is supported. The connecting and disconnecting plates 25 and 26 are formed so as to be connected to both sides of the conductive plate 27 by cutting out from one conductive plate and refracting it so as to have a U-shaped cross section. The conductive plate 27 is embedded in the facing plate 32 connected to the partition plate 31 so as to face the partition plate 31 so as to be inserted between the electrode plates 21 b to 23 b of the conductor blocks 21 to 23.

  As a result, the connection unit 11 slides the insulating cover 13 in a state in which the connection plates 25 and 26 are electrically connected to all of the electrode plates 21b to 23b of the conductor blocks 21 to 23 as shown in FIG. 4B. be able to.

  For this reason, for example, the connection adapter 10 is connected to the terminals 111 to 116 of the connection terminal block 102 of the watt hour meter 100 ′ different from the watt hour meter 100 connected to the conductor block 21 of the connection unit 11. The conductive wire is inserted into the insertion hole 23a of the conductor block 23 and is tightened by the tightening screw 28, so that the conductive connection can be established, and the two watt-hour meters 100 and 100 'can be connected in parallel.

  For example, as shown in FIG. 7, the connection plates 25 and 26 slide toward the conductor block 21, whereby the connection plate 25 is connected to the electrode plates 21 b and 22 b of the conductor blocks 21 and 22 to be conductive. The disconnecting plate 26 can be detached from the electrode plate 23b of the conductor block 23 and the conduction thereof can be interrupted while securing the power distribution line 201 without making the conductor block 23 charged (while floating). To 203 and the lead-in wires 204 to 206 can be connected to the main body 101 of the watt-hour meter 100 to be in a steady state (steady connection mode) in which power consumption is integrated and measured.

  Further, for example, as shown in FIG. 8, the connection plates 25 and 26 are formed by sliding the insulating cover 13 so as to be conductively connected to all of the electrode plates 21 b to 23 b of the conductor blocks 21 to 23. Of the two watt-hour meters 100 and 100 'are connected in parallel between the distribution lines 201 to 203 and the lead-in wires 204 to 206. The power supplied from the distribution lines 201 to 203 to the lead-in wires 204 to 206 can be shunted, and a shunting state (parallel connection mode) in which power consumption can be temporarily measured in both directions can be made.

  Furthermore, for example, as shown in FIG. 9, the connection plates 25 and 26 are slid in a direction to be separated from the conductor block 21, thereby separating the connection plate 25 from the electrode plate 21 b of the conductor block 21. At the same time that the connection plate 25 is connected to the electrode plate 22 b of the conductor block 22, the connection plate 26 can be connected to the electrode plate 23 b of the conductor block 23 to ensure conduction between them, and the conductor block 21 is charged. Without making the state, the main body part 101 of the separate watt hour meter 100 ′ is connected to the distribution lines 201 to 203 and the lead-in wires 204 to 206 (without timing to cut off the power supply in a disconnected state) temporarily. An alternative state (temporary connection mode) in which power consumption is integrated and measured can be set.

  Further, for example, as shown in FIG. 10, the connection plates 25 and 26 are separated from the electrode plates 22b and 23b of the conductor blocks 22 and 23 by sliding to the conductor block 21 side to cut off the conduction. It is also possible to cut the lead-in wires 204 to 206 from the distribution wires 201 to 203 and cut the power supply without cutting the conductor blocks 21 and 23 into the charged state.

  In other words, the connection adapter 10 includes a main connection / disconnection portion in which the connection / disconnection plate 25 extends in the separation direction of the conductor blocks 21 and 22 of the instrument-side terminal and the electric-wire-side terminal and disconnects the conductive contact therebetween. The connection / disconnection plate 26 is installed in parallel to form a sub-connection / disconnection portion that disconnects the conductive contact with the conductor block 23 of the terminal on the other circuit side, and includes the watt-hour meter 100 and the distribution lines 201 to 203. By interposing between the lead-in wires 204 to 206, a separate watt-hour meter 100 'can be prepared and the above-mentioned states can be switched sequentially and smoothly while maintaining the power supply. The existing watt-hour meter 100 can be disconnected and replaced while continuously measuring.

  The replacement work procedure (method) of the watt-hour meter 100 will be briefly described. First, a separate watt-hour meter 100 'for temporary use is prepared, and the connection terminal block 102 and the conductor block of the watt-hour meter 100' are prepared. An electric wire 30 is connected to 23. Before starting the exchange work of the watt-hour meter 100, the connection adapter 10 is arranged by electrically connecting the electrode plates 21b and 22b of the conductor blocks 21 and 22 with the connection / disconnection plate 25 as shown in FIG. Simultaneously with the state in which the watt-hour meter 100 is interposed between the electric wires 201 to 203 and the lead-in electric wires 204 to 206 to enable the supply and measurement of electric power, the conductor block 23 is separated from the connection plate 26 to be in an uncharged state. Is switched to the steady state. From this steady state, as shown in FIG. 8, the connection adapter 10 causes the connection plates 25 and 26 to be conductively connected to all of the electrode plates 21b to 23b of the conductor blocks 21 to 23, and the distribution lines 201 to 203 and the lead-in wires. As shown in FIG. 9, the connection plate 25 is connected to the connection plate 25 from the electrode plate 21 b of the conductor block 21, after the power meters 100 and 100 ′ are connected in parallel between 204 to 206 to split the supplied power. By making it an alternative state in which only the watt hour meter 100 ′ is interposed between the distribution lines 201 to 203 and the lead-in wires 204 to 206, the two watt hour meters 100 and 100 ′ or one power The meter 100 'continues to measure power consumption while securing power supply.

  In this state, the conductor block 21 is separated from the connection plate 25 and is in a non-charged state. Therefore, even if it is touched carelessly, the watt-hour meter 100 remains as it is without causing an accident such as an electric shock or a ground fault short circuit. The electric wire 29 can be removed from the connection terminal block 102, and the electric wire 29 can be connected to the connection terminal block 102 of a separate watt hour meter 100, so that the watt hour meter 100 can be safely replaced.

  Thereafter, the procedure is reversed, and as shown in FIG. 9, the connection plates 25 and 26 are conductively connected to the conductor blocks 22 and 23 and interposed between the distribution lines 201 to 203 and the lead-in wires 204 to 206. As shown in FIG. 8, from the alternative state in which the measurement of power consumption is continued while securing the power supply by the watt-hour meter 100 ′, all the electrode plates 21b to 23b of the conductor blocks 21 to 23 are connected to the connection plates 25, 26 is connected, and after passing through a shunting state in which the watt hour meters 100 and 100 'are connected in parallel between the distribution lines 201 to 203 and the lead-in wires 204 to 206, as shown in FIG. The conductor block 23 is separated from the electrode plate 23b so as to be in a non-charged state, and only the electrode plates 21b and 22b of the conductor blocks 21 and 22 are electrically connected by the connection / disconnection plate 25 to distribute power. The watt-hour meter 100 is interposed between the wires 201 to 203 and the lead-in wires 204 to 206 so that a steady state is achieved in which power consumption is measured together with power supply.

  In this state, the conductor block 23 is separated from the connection plate 26 and is in an uncharged state. Similarly, even if it is inadvertently touched, the electric power can be directly supplied without causing an accident such as an electric shock or a ground fault short circuit. The electric wire 30 connected to the connection terminal block 102 of the meter 100 ′ can be removed, and the replacement work of the watt-hour meter 100 can be safely completed.

  On the other hand, the connection adapter 10 is used to cut off the power supply from the distribution lines 201 to 203 to the lead-in wires 204 to 206 when temporarily canceling the commercial power supply contract, as shown in FIG. The continuity between the distribution wires 201 to 203 and the lead-in wires 204 to 206 connected to the conductor blocks 22 and 23 by separating the connection plates 25 and 26 from the electrode plates 22b and 23b of the conductor blocks 22 and 23 is established. The power supply from the commercial power source can be stopped.

  In this state, the conductor block 21 is separated from the conductor blocks 22 and 23 and is in an uncharged state. Similarly, even if it is touched carelessly, without causing an accident such as an electric shock or a ground fault, The electric energy meter 100 can also be collected by removing the electric wire 29.

  By the way, as shown in FIG. 4, in this connection adapter 10, connection electrodes 35 are arranged on the inner surface of the insulating case 12 in the extending direction on the conductor block 22 side of the connection / disconnection plate 25 for each connection unit 11. It arrange | positions so that it may respond | correspond to each of the electric wires 201-203 and the drawing-in electric wires 204-206. As shown in FIG. 11, the connection electrode 35 is installed on the inner surface of the insulating case 12 together with the conductive plates 36 to 38, and is disposed at locations corresponding to the distribution lines 201 to 203 and the lead-in wires 204 to 206. Are connected to each other by conductive plates 36-38. That is, the connection electrode 35 constitutes a wire side short-circuit terminal. Here, like the electrode plates 21b to 23b of the conductor blocks 21 to 23, the connection electrode 35 is paired so as to be pressed and sandwiched on both sides of the side surface of the connection plate 25 as shown in FIG. An electrode plate 35b is erected, and this electrode plate 35b can be placed in a state where the end of the disconnected connecting plate 25 is smoothly inserted and pressed by expanding both ends on the front end side. Is formed.

  Thus, after the connection unit 11 is in the alternative state shown in FIG. 9, the connection plate 11 is further slid in the direction separating the connection plates 25 and 26 from the conductor block 21, as shown in FIG. 13. The connection / disconnection plate 25 can be connected to the electrode plate 35b of the connection electrode 35 while maintaining a conductive connection between the connection plate 26 and the electrode plate 23b of the conductor block 23, and between the distribution lines 201-203 and the lead-in wires 204-206. Can be switched to a bypass state (short-circuit connection mode) in which the watt hour meter is connected through the conduction plates 36 to 38, and the watt hour meter 100 connected to the conductor block 21 is replaced without shutting off the power supply. Can be made possible.

  Further, when the insulating cover 13 is slid, the connection adapter 10 connects the conductor blocks 21 to 23 and the connection electrodes 35 to the connection plates 25 and 26 in the steady state (FIG. 7) and the shunt state (see FIG. 7). 8), the alternative state (FIG. 9), the stopped state (FIG. 10), and the bypass state (FIG. 11) are switched to one of the connection states at a time. It is opened at a position corresponding to the screw hole 12a of the insulating case 12 in the state, so that the insulative cover 13 can be prevented from moving inadvertently so that the conductive connection in each state can be maintained. Designed. That is, the screw hole 12a, the mounting screw 13a, and the mounting hole 13b constitute a fixing means, and the insulating cover 13 for switching the above state can be positioned and fixed so as not to move carelessly. The watt-hour meter 100 can be exchanged. The insulating cover 13 is formed with a specially shaped driver hole in the head portion of the mounting screw 13a so as not to be removed by a general-purpose screwdriver, and can be sealed on both side portions thereof. A hole 13c (see FIG. 4A) for inserting a sealing wire is formed so as to be able to.

  As described above, in this embodiment, the insulating cover 13 is slid in the direction of approaching or separating from the connection terminal block 102 of the watt hour meter 100 to connect the connection plates 25 and 26 to the conductor blocks 21 to 23 and the connection electrodes 35. By disconnecting, the conductor block 21 connecting the watt-hour meter 100 is disconnected from the distribution lines 201 to 203 and the drawn-in wires 204 to 206 (in a state where the watt-hour meter 100 does not become a charging unit), and the watt-hour meter 100 is replaced. In addition, a separate watt-hour meter 100 'can be temporarily connected even during the work, and the integrated measurement of the power consumption can be continued while maintaining the power supply. Accordingly, the connection between the watt hour meters 100 and 100 'can be easily switched without error, without stopping the power supply and its measurement, and at the same time, without the occurrence of an accident such as an electric shock or a ground fault short circuit. 100 replacement operations can be completed safely.

  Next, FIGS. 14-16 is a figure which shows 2nd Embodiment of the connection adapter of the watt-hour meter which concerns on this invention. Here, since the present embodiment is configured in substantially the same manner as the above-described embodiment, the same reference numerals are given to the same configurations, and only characteristic portions will be described.

  In FIG. 14, the auxiliary adapter 40 can be attached to the connection terminal block 102 of the watt hour meter 100 instead of the insulating cover 103 by diverting the screw hole 105 for the insulating cover 103 of the watt hour meter 100. Positioning is performed by inserting the fixing screws 42 into the screw holes 105 and screwing them together while keeping the rib shape 41 in contact with the lower surface of the connection terminal block 102 where the insertion holes are opened. It can be fixed. The auxiliary adapter 40 prevents the work of inserting the conductive wire of the electric wire 29 that is conductively connected to the conductor block 21 of the connection adapter 10 (connection unit 11) into the insertion hole while being attached to the connection terminal block 102. The rib shape 41 is designed so as to be positioned between the insertion holes of the connection terminal block 102 so as not to be staggered.

  Further, the auxiliary adapter 40 is attached with electric wires 71a to 73b made in the form of deformable lead wires connected to the conductor block 23 of the connection adapter 10, and the ends of the electric wires 71a to 73b are shown in FIG. A plug 74 shown in FIG. By inserting the plug 74 into the insertion hole 23 a of the conductor block 23 of the connection adapter 10, the plug 74 can be conductively connected without being tightened by the tightening screw 28.

  When the auxiliary adapter 40 is attached to the connection terminal block 102 of the watt hour meter 100, the upper fastening screws 121 that are close to the main body 101 side of the input terminals 111 to 113 and the output terminals 114 to 116 are provided. At the same time as the exposure, the connecting block 43 is formed so as to cover the lower fastening screw 122 separated from the main body 101. The connection block 43 is brought into electrical connection by being brought into pressure contact with an electrode portion 123 to which the lower tightening screw 122 is screwed at a corresponding position for each of the input terminals 111 to 113 and the output terminals 114 and 116 of the connection terminal block 102. Connection contacts (connection terminals) 51 to 54, 56 (see also FIG. 16) that can be used are housed, and electric wires 71a to 73b are electrically connected to the connection contacts 51 to 54, 56, respectively. Here, the connection contact 55 is omitted because it is possible to integrate and measure the power consumption without being connected to the output terminal 115 of the watt hour meter 100 as will be described later. ).

  Specifically, as shown in FIG. 16, the connection contacts 51 to 54 and 56 are made of an electrode plate material having a certain degree of elasticity as well as conductivity, and are connected to the connection terminal block 102 of the wattmeter 100. The input terminals 111 to 113 and the output terminals 114 and 116 are electrically connected to the facing portion 61 facing the electrode portion 123 having a screw hole to which the lower fastening screws 122 are screwed, and the electric wires 71a to 73b. A connecting portion 62, and a conductive portion 63 formed and attached so as to be elastically deformable to such an extent that the facing portion 61 and the connecting portion 62 are formed at both ends and the facing portion 61 can be pressed downward, I have.

  And the connection block 43 is screwed in the back side of the facing part 61 so that a resin holding screw 44 having insulation and elastic force can be advanced and retracted. The holding screw 44 can press the facing portion 61 against the input terminals 111 to 113 of the connection terminal block 102 of the attached watt hour meter 100 and the electrode portion 123 of the output terminals 114 and 116.

  In addition, the connection contacts 51 to 54 and 56 of the connection block 43 adjust the size of the connection part 62 and the conduction part 63 that make the facing part 61 conductive to the electric wires 71a to 73b in the height direction and the width direction. Thus, the electric wires 71a to 73b can be pulled out from the sides. Specifically, the connection portion 62 and the conduction portion 63 of the connection contacts 51 and 54 that press-connect the facing portion 61 to the input terminal 111 and the output terminal 114 located on the outermost side of the connection terminal block 102 are shown in FIG. And as shown to Fig.16 (a), it is designed so that the electric wires 71a and 71b can pass the location which approaches the main-body part 101 and approaches the connection terminal block 102, and this connection contact 51, The connection parts 62 for every 54 are conductively connected to the electric wires 71a and 71b. Further, the connection portion 62 and the conduction portion 63 of the connection contacts 53 and 56 for press-connecting the facing portion 61 to the input terminal 113 and the output terminal 116 located at the center portion of the connection terminal block 102 are shown in FIGS. As shown in (c), it is designed so that the electric wires 73a and 73b can pass through a portion that is separated from the main body 101 and approaches the connection terminal block 102. For each connection contact 53 and 56, as shown in FIG. The connecting portion 62 is conductively connected to the electric wires 73a and 73b. Furthermore, the connection portion 62 and the conduction portion 63 of the connection contact 52 that press-connects the facing portion 61 to the input terminal 112 located between the input terminals 111 and 113 of the connection terminal block 102 are shown in FIG. 16 (b), it is designed so that the electric wires 72a and 72b can pass through the place separated from the main body 101 and also from the connection terminal block 102. The connecting portion 62 is conductively connected to both of the electric wires 72a and 72b. Here, the input terminal 112 and the output terminal 115 of the connection terminal block 102 are terminals connected to a so-called middle line in the watt-hour meter 100, and the current flowing therethrough is not necessarily integrated and measured as power consumption. In order to secure a bypass (short circuit) between the distribution lines 201 to 203 and the lead-in wires 204 to 206, the electric wires 72a and 72b are directly connected to each other, so that the connection to the output terminal 115 is omitted. 54 is also omitted. The wires 72a and 72b are connected to the input terminal 102 of the connection terminal block 102 by the connection contact 52 because it is necessary for the watt-hour meter 100 (voltage coil) to function.

  Thereby, the auxiliary adapter 40 is attached to the connection terminal block 102 of the watt hour meter 100, and the facing portions 61 of the connection contacts 51 to 54, 56 are connected to the input terminals 111 to 113 and the output terminal 114 by the holding screw 44 of the connection block 43. 116, the electric wires 71a and 71b can be conductively connected to the input terminal 111 and the output terminal 114 of the connection terminal block 102, and the electric wires 73a and 73b can be connected to the connection terminal block 102. The input terminal 113 and the output terminal 116 can be conductively connected, and the electric wires 72a and 72b can be conductively connected to the input terminal 112 of the connection terminal block 102 while being conductively connected. Therefore, the auxiliary adapter 40 can interpose a separate watt-hour meter 100 ′ between the electric wires 71 a to 73 b, and connect the plugs 74 at the ends of the electric wires 71 a to 73 b to the plurality of connection adapters 10. The connection unit 11 can be electrically connected by being inserted into the insertion hole 23a of the conductor block 23.

  That is, the electric wires 71a to 73b are different from the electric wires 29 that are conductively connected to the conductor block 21 of the connection adapter 10 (connection unit 11) by attaching the auxiliary adapter 40 to the connection terminal block 102 of the watt hour meter 100 ′. Via the conductor block 23 of the path, the distribution lines 201 to 203 and the lead-in wires 204 to 206 can be conductively connected to the input terminals 111 to 113 and the output terminals 114 and 116 of the separate wattmeter 100 ', The power consumption of the supplied power is achieved by connecting separate watt-hour meters 100 ′ in parallel between the input terminals 111 to 113 and the output terminals 114 to 116 of the connection terminal block 102 of the watt-hour meter 100 to which the connection adapter 10 is connected. It is possible to measure (measure) the accumulated current separately or separately.

  And since this auxiliary adapter 40 is a lead wire which can deform | transform electric wires 71a-73b, while attaching to the connection terminal block 102 of separate watt-hour meter 100 ', the electric wires 71a-73b are connected to the connection adapter 10 (connection). The watt-hour meter 100 connected by, for example, the electric wire 29 that is conductively connected to the conductor block 21 of the connection unit 11 while being connected to the insertion hole 23a of the conductor block 23 of the unit 11). The watt-hour meter 100 can be replaced with a watt-hour meter 100 '.

  The replacement work procedure (method) of the watt-hour meter 100 will be briefly described. First, a new watt-hour meter 100 ′ to be temporarily used is prepared, and the input terminals 111 to 113 and the output of the connection terminal block 102 are output. By attaching the auxiliary adapter 40 with the lower tightening screws 122 of the terminals 114 to 116 removed, the electric wires 71 a to 73 b are connected to the input terminals 111 to 113 and the output terminals 114 and 116. Further, the auxiliary adapter 40 is selectively switched to the steady state shown in FIG. 7, so that the distribution lines 201 to 203 and the incoming wires 204 to 206 are connected to the input terminal 111 of the connection terminal block 102 of the existing wattmeter 100. -113 and the connection unit 11 of the connection adapter 10 connected to the output terminals 114-116, the plugs 74 of the electric wires 71a-73b are inserted into the plug-in holes 23a of the conductor block 23 in the non-charged state, and the conductive connection is established. To do.

  After this, similarly to the above-described embodiment, after switching to the diversion state shown in FIG. 8 and connecting the watt hour meters 100, 100 ′ in parallel between the distribution lines 201-203 and the lead-in wires 204-206, FIG. The conductor block 21 connected to the existing wattmeter 100 is switched to the non-charged state, and only the new wattmeter 100 ′ is provided between the distribution lines 201 to 203 and the incoming wires 204 to 206. By interposing the power consumption, the power consumption is continuously measured while the power supply is maintained. Next, by loosening the tightening screws 121 and 122 of the connection terminal block 102 of the existing watt-hour meter 100, the conductive wires of the electric wires 29 connected to the conductor block 21 of the connection adapter 10 are connected to the input terminals 111 to 113. Then, the existing watt hour meter 100 is removed from the installation position.

  Next, the upper tightening screw 121 of the connection terminal block 102 of the new watt hour meter 100 ′ is loosened, and the watt hour meter 100 ′ is moved to the original installation position where the existing watt hour meter 100 is removed, and connected. The conductive wire of the electric wire 29 connected to the conductor block 21 of the adapter 10 is inserted into the insertion holes of the input terminals 111 to 113 and the output terminals 114 to 116, and then the upper tightening screw 121 is tightened to connect the conductors. Conductive connection is made to the conductor block 21 of the adapter 10. At this time, the electric wires 71a to 73b of the auxiliary adapter 40 are extended from the side of the connection block 43 and freely bent and deformed, so that the conductive wires of the electric wires 29 are overlapped with the lower connection adapter 10 side to the input terminals 111 to 111. 113 and the output terminals 114 to 116 are not hindered from being inserted into the insertion holes, and the upper fastening screws 121 are easily exposed from the connection block 43 of the auxiliary adapter 40. It can be rotated and screwed together, and it can be tightened with high reliability and its conductive wire can be electrically connected to the input terminals 111 to 113 and the output terminals 114 to 116.

  Thereafter, the procedure is reversed, and the distribution lines 201 to 203 and the incoming wires 204 to 206 are returned from the alternative state shown in FIG. 9 to the steady state shown in FIG. 7 through the shunt state shown in FIG. In the meantime, a new watt hour meter 100 ′ is interposed via the conductor blocks 21, 22 and the connection plate 25 to continue the supply and measurement of power, and the conductor block 23 is brought into a non-charged state. Next, after removing the auxiliary adapter 40 from the connection terminal block 102 of the watt hour meter 100 ′, the plugs 34 of the electric wires 71 a to 73 b are pulled out from the insertion holes 23 a of the conductor block 23, and the connection terminal block 102. The lower fastening screws 122 of the input terminals 111 to 113 and the output terminals 114 to 116 are screwed together so that the conductive wires of the electric wires 29 connected to the conductor block 21 of the connection unit 11 are securely connected. Then, the replacement work of the watt-hour meter 100 is completed.

  As described above, in the present embodiment, in addition to the effects of the above-described embodiment, the auxiliary adapter 40 is attached to the connection terminal block 102 of the watt hour meter 100 ′ to be newly attached, so that the insertion hole 23a of the conductor block 23 is inserted. It can be easily connected / disconnected by simply inserting / removing the plugs 74 of the wires 71a-73b, and the new watt-hour meter 100 ′ is moved to the installation position where the existing watt-hour meter 100 is removed. Thus, it can be easily connected and attached to the electric wire 29 of the conductor block 21. Therefore, the replacement work can be performed without preparing an alternative watt-hour meter, and the watt-hour meter used as a substitute at the time of replacement can be continuously used for measuring power consumption.

  Here, in the above-described first embodiment, a case where the existing watt-hour meter 100 is replaced by using an alternative watt-hour meter 100 ′ will be described. However, the auxiliary adapter 40 described in the present embodiment is used. In addition to connecting the plugs 74 of the electric wires 71a to 73b to the conductor block 23 of the connection adapter 10, and attaching the auxiliary adapter 40 to the connection terminal block 102 of the existing watt-hour meter 100, the power amount dedicated for substitution It is also possible to replace the existing wattmeter 100 after the connection unit 11 of the connection adapter 10 is changed from the alternative state shown in FIG. 9 to the bypass state shown in FIG. 13 without preparing the total 100 ′. it can.

  Further, in the first and second embodiments described above, the case where the connection electrode 35 is provided so that the alternative state shown in FIG. 9 and the bypass state shown in FIG. 13 can be selectively switched is described as an example. However, the present invention is not limited to this, and the connection electrode 35 and the conductive plates 36 to 38 are omitted, and instead, a component in which a circuit similar to the conductor plates 36 to 38 is molded in an insulating material. By making the conductor block 23 detachable, it is possible to select whether to change from the shunt state to the alternative state or to switch to the bypass state as it is, and to design the power meter to be replaced. it can.

  Furthermore, in both the first and second embodiments described above, the power supply side distribution lines 201 to 203 for supplying commercial power from the power supply side, and the lead-in side distribution lines for connecting the commercial power to load devices such as homes. The watt-hour meter 100 that integrates and measures the power consumption used by the load device by being interposed between 204 and 206 will be described as an example, but is not limited thereto. Although not shown, in combination with a transformer (VT) connected directly to the distribution line and a current transformer (transformer VCT) composed of a current transformer (CT) connected indirectly to the distribution line The connection adapter 10 and the auxiliary adapter 40 are formed so as to correspond to the respective terminals of the connection terminal block, so that the watt-hour meters are arranged in parallel as in the above embodiment. Can be exchanged. Note that the watt-hour meter that uses this transformer for current transformer may cause breakdown or burnout in the transformer if there is an incorrect connection or if the wiring to the current circuit is accidentally disconnected. Therefore, the connection adapter 10 and the auxiliary adapter 40 have colors corresponding to the wires of the connection adapter 10 to prevent erroneous connection, or the parallel spacing of the insertion holes 23a of the conductor block 23 of the connection adapter 10 And the plug 74 at the tip of the wire of the auxiliary adapter 40 may be integrated with a resin or the like so as to coincide with the non-uniform interval, so that the plugs 74 can be disconnected at a time. .

  Furthermore, in both of the first and second embodiments described above, the form of the connection adapter 10 that is separately attached to the connection terminal block of the watt hour meter is adopted. However, the present invention is not limited to this. You may connect with the main-body part 101 of the quantity meter 100 as a connection terminal block. In this case, it can also be applied to a structure in which only the main body 101 is replaced, and without using the auxiliary adapter 40 as in the second embodiment, only an electric wire having plugs 74 at both ends is prepared. Thus, the watt hour meter can be exchanged safely while continuing to supply and measure power.

  Although one embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea.

It is a figure which shows 1st Embodiment of the connection adapter of the watt-hour meter which concerns on this invention, and is a see-through | perspective plan view which shows the schematic whole structure. It is a figure which shows an example of the watt-hour meter which attaches the connection adapter, (a) is the external appearance top view, (b) is the external appearance side view. It is a top view which shows the state which open | releases the connection terminal block so that connection work is possible. It is a figure which shows the principal part structure of the connection adapter, (a) is the side view, (b) is the partial cross section bottom view. It is a longitudinal section which shows the principal part structure of the connection adapter. It is an enlarged bottom view which shows the shape of the connection location of the principal part structure. It is a bottom view which shows the connection state in the principal part structure of the connection adapter. It is a bottom view which shows the connection state different from the FIG. It is a bottom view which shows the connection state different from the FIG. 7 and FIG. It is a bottom view which shows the connection state different from the FIGS. 7-9. It is a top view which shows the principal part structure of a location different from the FIG. It is an enlarged bottom view which shows the shape of the connection location different from the FIG. It is a bottom view which shows the connection state different from the FIGS. 7-10. It is a figure which shows 2nd Embodiment of the connection adapter of the watt-hour meter which concerns on this invention, (a) is a top view which shows the schematic whole structure of the auxiliary adapter attached to the connection adapter, (b) is the connection terminal block It is the AA see-through | perspective side view in the (a) which shows the attachment structure positioned and fixed to. It is a top view which shows the electric wire attached to the auxiliary adapter. It is a figure which shows conduction | electrical_connection connection with the terminal of the connection terminal block arrange | positioned in the position which each of the auxiliary adapter differs, (a) is a BB transparent side view in Fig.14 (a), (b) is a figure. 14 (a) is a CC perspective side view, and FIG. 14 (c) is a DD transparent side view in FIG. 14 (a).

Explanation of symbols

  10 …… Connection adapter 11 …… Connection unit 12 …… Insulation case 12a …… Screw hole 13 …… Insulation cover 13a …… Mounting screw 13b …… Mounting hole 21-23 …… Conductor block 21a-23a …… Insertion hole 21b-23b, 35b ... Electrode plate 25, 26 ... Connection plate 27, 36-38 ... Conductor plate 29, 30, 71a-73b ... Electric wire 31 ... Partition plate 35 ... Connection electrode 40 ... Auxiliary Adapter 41 ... Rib shape 42 ... Fixing screw 43 ... Connection block 44 ... Holding screw 51 to 54, 56 ... Connection contact 61 ... Face to face 62 ... Connection part 63 ... Conduction part 74 ... Difference Plug 100 ... Electricity meter 101 ... Main body 102 ... Connection terminal block 103 ... Insulation cover 1 4 …… Mounting screw 105 …… Screw hole 111 to 113 …… Input terminal 114 to 116 …… Output terminal 121 …… Upper tightening screw 122 …… Lower tightening screw 123 …… Electrode 201 to 203 …… Allocation Electric wire 204-206 ... Lead-in wire

Claims (6)

A watt-hour meter that is interposed between a power supply side distribution line that supplies commercial power from a power supply and a lead-in side distribution line that is connected to a load device that consumes the commercial power and integrates the power consumption of the load device A connection adapter that connects to
An instrument side terminal connected to the watt hour meter side, a wire side terminal connected to the distribution line side, a separate circuit side terminal connected to a separate circuit in conduction, and an input of the wire side terminal separately from the separate circuit side terminal A wire-side short-circuit terminal that is disposed at a corresponding position on each of the output side and the output side and conducts between the input side and the output side, and connection means for connecting and disconnecting the conduction between the terminals. And
The disconnecting means includes a steady connection mode for conducting between the instrument side terminal and the electric wire side terminal, a parallel connection mode for conducting between the instrument side terminal, the electric wire side terminal and the separate circuit side terminal, an electric wire side terminal, and another A temporary connection mode in which electrical connection is established between the circuit side terminals, and a short-circuit connection mode in which electrical connection is established between the input side and the output side of the wire side terminal and the electrical connection is established between the wire side terminal and the wire side short circuit terminal. A watt-hour connection adapter, characterized in that it is designed in the form of a switch that selectively switches to any one of the above.   The said various terminals and connection / disconnection means are arrange | positioned in the positional relationship which performs a switching connection via a parallel connection mode between a regular connection mode and a temporary connection mode. Watt-hour meter connection adapter. The various terminals and the connection / disconnection means are arranged in a positional relationship in which switching connection is possible to shift to only the short-circuit connection mode after executing the short-circuit connection mode simultaneously with at least one of the steady connection mode, the parallel connection mode, and the temporary connection mode. The watt-hour meter connection adapter according to claim 1, wherein the watt-hour meter connection adapter is provided. The various terminals are electrically connected to a connecting portion for connecting an electric wire and are embedded in the case together with the connecting portion,
The case includes a slide member attached to be slidable in a horizontal direction with respect to a connection direction of the electric wire to the connection portion,
The clutching means, any one of claims 1 to 3, characterized by connecting and disconnecting between the various terminals by being placed together with the slide member sliding the slide member in the horizontal direction The connection meter adapter described in 1. The case includes a fixing means for fixing the slide member to the case body at the switching position of the steady connection mode,
The watt-hour connection adapter according to claim 4 , wherein the fixing means is designed so that the slide member can be positioned and fixed at a switching position of each mode other than the steady connection mode. A watt-hour meter installed on a distribution line that supplies commercial power from a power source to a consumer and integrating the power consumption,
The connection adapter mechanism according to any one of claims 1 to 5 is incorporated in a connection terminal block in which electric wire side terminals connected to the distribution line side are arranged,
The meter side terminal is connected to the main body of the watt hour meter.

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