CN217642582U - Junction box for adjusting reverse phase sequence of electric energy meter - Google Patents
Junction box for adjusting reverse phase sequence of electric energy meter Download PDFInfo
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- CN217642582U CN217642582U CN202220606037.9U CN202220606037U CN217642582U CN 217642582 U CN217642582 U CN 217642582U CN 202220606037 U CN202220606037 U CN 202220606037U CN 217642582 U CN217642582 U CN 217642582U
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- junction box
- electric energy
- energy meter
- terminal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
The utility model belongs to the technical field of power equipment, a terminal box of the contrary phase sequence of adjustment electric energy meter is related to, the terminal box body includes terminal box upper portion and terminal box lower part, built-in bipolar switch in terminal box upper portion, the built-in wiring formula measurement terminal box in terminal box lower part, the electric energy meter is connected to bipolar switch one end, and the other end links to each other with wiring formula measurement terminal box, can once only accomplish the change of secondary wiring through built-in bipolar switch, and convenient operation can just can accomplish the switching of phase sequence under the circumstances of not having a power failure, not changing the return circuit wiring.
Description
Technical Field
The utility model relates to a power equipment technical field especially relates to a terminal box of reverse phase sequence of adjustment electric energy meter.
Background
At present, after the 10kV industry is newly loaded and powered on, the situation that an electric energy meter displays a reverse phase sequence often appears, especially, under the situation that three-phase three-wire connection of a high-voltage supply and high-voltage meter is available, electric quantity calculation errors can be caused, the existing method for solving the reverse phase sequence is to change primary connection or secondary connection, and the existing defects are as follows: when the primary cable and the secondary wiring are laid, the replacement of the wiring results in long time use, even the cable needs to be replaced or the secondary wiring is wrong.
SUMMERY OF THE UTILITY MODEL
In order to solve the not enough of prior art, the utility model provides an adjustment electric energy meter negative phase sequence's terminal box under the condition that does not change outside wiring, divide into two parts from top to bottom with the terminal box, the lower part carries out electric energy meter field test and unlikely each electrical equipment of measuring unit of influence when trading the table and normally works, and the change of secondary wiring can once only be accomplished through built-in bipolar switch in upper portion, convenient operation.
The utility model adopts the following technical scheme:
the junction box comprises a junction box body, the junction box body comprises a junction box upper portion and a junction box lower portion, a bipolar switch is arranged in the junction box upper portion, a wiring type metering junction box is arranged in the junction box lower portion, one end of the bipolar switch is connected with the electric energy meter, and the other end of the bipolar switch is connected with the wiring type metering junction box.
The technical limitation is further realized, the upper part of the junction box and the upper part of the junction box are connected into a whole through a connecting plate, two first preformed holes are formed in the lower end of the upper part of the junction box, two second preformed holes are formed in the upper end of the lower part of the junction box, a third preformed hole is formed in the connecting plate, and the first preformed holes and the second preformed holes are communicated through the third preformed holes.
The further technical limitation is that the wiring type metering junction box is a three-phase three-wire wiring type metering junction box, and the electric energy meter is a three-phase three-wire metering electric energy meter.
The three-phase three-wire wiring type metering junction box is further technically limited, and a voltage wiring board and a current wiring board are arranged on the three-phase three-wire wiring type metering junction box and are used for being connected with a three-phase three-wire electric energy meter and a terminal.
The three-phase three-wire connection type metering junction box is further technically limited to be provided with two current wiring boards and three voltage wiring boards, and the current wiring boards are arranged between the adjacent voltage wiring boards.
The further technology is limited, be equipped with the binding post that opens and shuts of the normal open binding post of the same way and the same way on the electric current wiring board, the binding post that opens and shuts includes first electric current binding post and second electric current binding post, first electric current binding post and second electric current binding post pass through the electric current antithetical couplet piece and connect.
The further technical limitation is that the voltage wiring board is provided with a first voltage wiring terminal, a second voltage wiring terminal and a third voltage wiring terminal, and adjacent wiring terminals of the first voltage wiring terminal, the second voltage wiring terminal and the third voltage wiring terminal are connected through a voltage connection piece.
In a further aspect, the bipolar switch includes a first switch and a second switch, and the first switch and the second switch are connected by a linkage.
In a further aspect, the first switch and the second switch are single pole, double throw switches.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses under the condition that does not change outside wiring, divide into two parts from top to bottom with the terminal box, the lower part comprises wiring formula measurement terminal box for carry out electric energy meter field test and unlikely each electrical equipment of influence measurement unit normal work when trading the table, upper portion comprises built-in bipolar switch, is used for carrying out the switching of phase sequence, can once only accomplish the change of secondary wiring through built-in bipolar switch, convenient operation. The device has the advantages of simple principle, simple structure, convenient operation and low cost, can complete the phase sequence switching under the conditions of no power failure and no change of loop wiring, saves manpower and improves the working efficiency.
2. The utility model discloses constitute by three-phase three-wire connection formula terminal box and built-in bipolar switch, if after the power transmission, produce the condition of reverse phase sequence, then with the terminal box in the short circuit of electric current antithetical couplet piece ensure that the electric current return circuit does not have the open circuit, with the terminal box in the disconnection of voltage antithetical couplet piece ensure that the voltage return circuit does not have the short circuit, operate built-in bipolar switch again, rearrange the phase sequence, can not carry out the change of primary circuit and secondary circuit wiring and just can accomplish the rearrangement of phase sequence.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic view of the whole structure of the junction box in the embodiment of the present invention;
fig. 2 is a schematic structural view of a wiring type metering junction box according to an embodiment of the present invention.
In the figure, 1-a junction box body, 2-a connecting plate, 3-a bipolar switch, 4-a wiring type metering junction box, 5-an electric energy meter, 6-a current junction box, 601-a normally-on junction box, 602-an on-off junction box, 6021-a first current junction box, 6022-a second current junction box, 7-a voltage junction box, 701-a first voltage junction box, 702-a second voltage junction box, 703-a third voltage junction box, 8-a current coupler, 9-a voltage coupler, K1-a first switch and K2-a second switch.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Referring to fig. 1, the present invention provides an embodiment:
a junction box for adjusting the reverse phase sequence of an electric energy meter comprises a junction box body 1, wherein the junction box body 1 comprises a junction box upper part and a junction box lower part, and the junction box upper part are connected into a whole through a connecting plate 2.
The double-pole metering junction box is characterized in that a double-pole switch 3 is arranged in the upper portion of the junction box, a wiring type metering junction box 4 is arranged in the lower portion of the junction box, one end of the double-pole switch 3 is connected with an electric energy meter 5, and the other end of the double-pole switch is connected with the wiring type metering junction box 4.
The lower extreme on terminal box upper portion is equipped with two first preformed holes, the upper end of terminal box lower part is equipped with two second preformed holes, connecting plate 2 is equipped with the third preformed hole, first preformed hole and second preformed hole pass through the third preformed hole intercommunication.
Wiring formula measurement terminal box 4 is three-phase three-wire connection formula measurement terminal box, be equipped with current wiring board 6 and three-phase three-wire connection formula measurement terminal box on the three-phase three-wire connection formula measurement terminal box current wiring board 6 and voltage wiring board 7 are used for connecting three-phase three-wire electric energy meter and terminal be provided with two current wiring boards 6 and three voltage wiring board 7 in the three-phase three-wire connection formula measurement terminal box, be provided with current wiring board 6 between the adjacent voltage wiring board 7.
As shown in fig. 2, a normally-on terminal 601 and an open-close terminal 602 are disposed on the current terminal board 6, the open-close terminal 602 includes a first current terminal 6021 and a second current terminal 6022, and the first current terminal 6021 and the second current terminal 6022 are connected through a current coupler 8.
The voltage wiring board 7 is provided with a first voltage wiring terminal 701, a second voltage wiring terminal 702 and a third voltage wiring terminal 703, and adjacent lines of the first voltage wiring terminal 701, the second voltage wiring terminal 702 and the third voltage wiring terminal 703 are connected through a voltage connection piece 9.
The double-pole switch 3 comprises a first switch K1 and a second switch K2, the first switch K1 is connected with the second switch K2 through a connecting rod, and the first switch K1 and the second switch K2 are single-pole double-throw switches.
As shown in fig. 2, if a reverse phase sequence occurs after power transmission, the current connection pieces in the junction box are short-circuited to ensure that no open circuit exists in the current loop; and the voltage connection piece in the junction box is disconnected to ensure that a voltage loop has no short circuit, and the phase sequence is inverted by operating the built-in bipolar switch.
For example, if the phase sequence of the voltage wiring board in the three-phase three-wire wiring type metering wiring box is BAC, the phase sequence of the current wiring board is AC and remains unchanged, namely, a reverse phase sequence is generated at the moment, and the current loop is ensured to have no open circuit by short-circuiting the current connecting piece in the wiring box; and the voltage connection piece in the junction box is disconnected to ensure that a voltage loop has no short circuit, and the phase sequence of the voltage wiring board is ABC and the phase sequence of the current wiring board is AC by switching the bipolar switch to realize phase sequence inversion.
Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or some technical features can be replaced equally, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The junction box for adjusting the reverse phase sequence of the electric energy meter comprises a junction box body and is characterized in that the junction box body comprises a junction box upper part and a junction box lower part, a bipolar switch is arranged in the junction box upper part, a wiring type metering junction box is arranged in the junction box lower part, one end of the bipolar switch is connected with the electric energy meter, and the other end of the bipolar switch is connected with the wiring type metering junction box.
2. The junction box for adjusting the reverse phase sequence of the electric energy meter according to claim 1, wherein the upper part of the junction box and the upper part of the junction box are connected into a whole through a connecting plate, two first preformed holes are formed in the lower end of the upper part of the junction box, two second preformed holes are formed in the upper end of the lower part of the junction box, a third preformed hole is formed in the connecting plate, and the first preformed hole and the second preformed hole are communicated through the third preformed hole.
3. The junction box for regulating the reverse phase sequence of an electric energy meter according to claim 1, wherein the wiring type metering junction box is a three-phase three-wire wiring type metering junction box, and the electric energy meter is a three-phase three-wire metering electric energy meter.
4. The junction box for regulating the reverse phase sequence of an electric energy meter as claimed in claim 3, wherein said three-phase three-wire type metering junction box is provided with a voltage terminal plate and a current terminal plate for connecting the three-phase three-wire electric energy meter and the terminal.
5. The junction box for regulating the reverse phase sequence of an electric energy meter as claimed in claim 4, wherein two current terminal plates and three voltage terminal plates are provided in said three-phase three-wire connection type metering junction box, and a current terminal plate is provided between adjacent voltage terminal plates.
6. The junction box for adjusting the reverse phase sequence of an electric energy meter according to claim 4, wherein a normally-on terminal and an open-close terminal are arranged on the current terminal board, the open-close terminal comprises a first current terminal and a second current terminal, and the first current terminal and the second current terminal are connected through a current connection piece.
7. The junction box for adjusting the reverse phase sequence of an electric energy meter according to claim 4, wherein the voltage terminal plate is provided with a first voltage terminal, a second voltage terminal and a third voltage terminal, and adjacent terminals of the first voltage terminal, the second voltage terminal and the third voltage terminal are connected through a voltage connection piece.
8. The junction box for regulating reverse phase sequence of an electric energy meter according to claim 4, wherein the bipolar switch comprises a first switch and a second switch, and the first switch and the second switch are connected through a connecting rod.
9. The junction box for regulating reverse phase sequence of an electric energy meter according to claim 8, wherein said first switch and said second switch are single pole double throw switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220606037.9U CN217642582U (en) | 2022-03-18 | 2022-03-18 | Junction box for adjusting reverse phase sequence of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220606037.9U CN217642582U (en) | 2022-03-18 | 2022-03-18 | Junction box for adjusting reverse phase sequence of electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217642582U true CN217642582U (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220606037.9U Active CN217642582U (en) | 2022-03-18 | 2022-03-18 | Junction box for adjusting reverse phase sequence of electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217642582U (en) |
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2022
- 2022-03-18 CN CN202220606037.9U patent/CN217642582U/en active Active
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