CN213843347U - Novel three-phase three-wire combined junction box - Google Patents
Novel three-phase three-wire combined junction box Download PDFInfo
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- CN213843347U CN213843347U CN202022444478.7U CN202022444478U CN213843347U CN 213843347 U CN213843347 U CN 213843347U CN 202022444478 U CN202022444478 U CN 202022444478U CN 213843347 U CN213843347 U CN 213843347U
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Abstract
The application discloses novel three-wire combination terminal box of three-phase includes: box body, lid, voltage business turn over wiring hole, electric current business turn over wiring hole, voltage connection piece, current connection piece, voltage connecting plate, current connecting plate, test voltage hole post and test current hole post, all be equipped with screw thread type cusp recess inside and outside the test voltage hole post for the voltage circuit of parallel access electric energy meter or check-up instrument, test current hole post top is equipped with L type opening, is used for the current circuit of series connection or parallel access electric energy meter or check-up instrument, voltage connecting plate and the current connecting plate arrange in turn inside the box body, voltage business turn over wiring hole and electric current business turn over wiring hole are located downside on the box body. The problem that the current loop of the existing combined junction box can only be connected with an electric energy meter or a calibration instrument in series and cannot be connected in parallel is solved, and the requirement of zero loss of electric quantity of a charged meter-changing is met.
Description
Technical Field
The application relates to the technical field of junction boxes, in particular to a novel three-phase three-wire combined junction box.
Background
The combined junction box is also called an electric energy metering combined junction box and is used as an important component of a metering secondary circuit, the combined junction box is widely applied in the power industry, and the combined junction box has the function of connecting secondary wires led out by a mutual inductor in series and in parallel with voltage and current terminals of a box end and then connecting the secondary wires to voltage and current terminals of an electric energy meter to complete testing or checking of various projects. In the practical process, the on-off states of the voltage loop, the current loop, the upper loop, the lower loop, the left loop and the right loop are changed by changing the positions of the voltage connecting sheet and the current connecting sheet on the junction box, great convenience is brought to field verification, live replacement, electricity utilization inspection and the like of the metering device, and the field working efficiency and the operation safety are improved. However, the current loop of the existing combined junction box can only be connected with an electric energy meter or a calibration instrument in series, and cannot be connected in parallel.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the current loop of the existing combined junction box can only be connected with an electric energy meter or a calibration instrument in series but cannot be connected in parallel, the application discloses a novel three-phase three-wire combined junction box through the following embodiments.
The application discloses novel three-wire combination terminal box of three-phase includes: the device comprises a box body, a box cover, a voltage inlet and outlet wiring hole, a current inlet and outlet wiring hole, a voltage connecting sheet, a current connecting sheet, a test voltage hole column and a test current hole column;
the test voltage hole column is internally and externally provided with thread-shaped tooth-shaped grooves and is used for being connected in parallel with a voltage loop of an electric energy meter or a calibration instrument;
the top of the test current hole column is provided with an L-shaped opening, and the test current hole column is used for being connected in series or in parallel to a current loop of the electric energy meter or the calibration instrument;
the voltage connecting plates and the current connecting plates are alternately arranged in the box body;
the test voltage hole column and the voltage connecting sheet are arranged on the front face of the voltage connecting plate, and the test current hole column and the current connecting sheet are arranged on the front face of the current connecting plate;
the voltage inlet and outlet wiring hole and the current inlet and outlet wiring hole are positioned on the upper side and the lower side of the box body.
Optionally, the voltage connection board is provided with three groups, which respectively correspond to three-phase voltages of the three-phase three-wire combined junction box;
the voltage connecting plate adopts a wiring mode that one wire inlet hole is provided with a plurality of wire outlet holes, and each group of voltage connecting plates is provided with one test voltage hole column.
Optionally, two sets of current connecting plates are arranged, and the two sets of current connecting plates respectively correspond to two-phase currents of the three-phase three-wire combined junction box;
the current connecting plate is composed of two to four mutually independent current channels, each independent current channel adopts a wiring mode of one wire inlet hole and one wire outlet hole, and three test current hole columns are arranged on each group of current connecting plate.
Optionally, the left and right sides of box body all is equipped with a mounting hole, every respectively be equipped with an adjustable installation mechanism on the mounting hole, adjustable installation mechanism is the hollow sheetmetal of a long rectangle, the box body bottom is equipped with the hemisphere stabilizer blade.
Optionally, the voltage connection piece and one end of the current connection piece are provided with insulation caps, the insulation caps are used for carrying out color identification according to the phase sequence of the voltage connection piece and the current connection piece, and the upper side and the lower side of the box body are provided with character identifications according to the phase sequence identification.
Optionally, an insulating hole plug is arranged in the standby voltage inlet and outlet wiring hole and the standby current inlet and outlet wiring hole, and the insulating hole plug is pluggable.
Optionally, the metal material used for all the voltage channels and the current channels in the box body is copper.
Optionally, the box body and the box cover are made of high polymer polycarbonate materials and are in a fully transparent state.
The application discloses novel three-wire combination terminal box of three-phase includes: box body, lid, voltage business turn over wiring hole, electric current business turn over wiring hole, voltage connection piece, current connection piece, voltage connecting plate, current connecting plate, experimental voltage hole post and experimental current hole post, all be equipped with screw thread type cusp recess inside and outside the experimental voltage hole post for the voltage circuit of parallel access electric energy meter or check-up instrument, experimental current hole post top is equipped with L type opening, is used for the electric current circuit of series connection or parallel access electric energy meter or check-up instrument, voltage connection plate reaches the current connecting plate arrange in turn inside the box body, the voltage connecting plate openly be equipped with experimental voltage hole post and voltage connection piece, current connecting plate openly be equipped with experimental current hole post and current connection piece, voltage business turn over wiring hole and electric current business turn over wiring hole are located downside on the box body.
This application has solved current loop of current joint terminal box and can only establish ties electric energy meter or check-up instrument, and can not realize parallelly connected problem, has satisfied the requirement of the zero loss of electrified meter-changing electric quantity, and compare in current joint terminal box, the novel joint terminal box of this application is when carrying out the load check-up, connect the electric energy meter or the current wiring of check-up instrument in the front of joint terminal box, there is the touch screen cabinet when having solved current joint terminal box live working, the elasticity screw is wasted time and energy and the operating space scheduling problem that is not enough.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a box body of a novel three-phase three-wire combined junction box provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a back side of a box body of a novel three-phase three-wire combined junction box provided in an embodiment of the present application;
fig. 3 is a schematic top side view of a box body of a novel three-phase three-wire junction box according to an embodiment of the present disclosure;
fig. 4 is a schematic view of a lower side surface of a box body of a novel three-phase three-wire combined junction box provided by an embodiment of the present application;
fig. 5 is a schematic view of a screw-type tooth-shaped groove of a test voltage hole column of the novel three-phase three-wire junction box according to the embodiment of the present application;
fig. 6 is a schematic structural diagram of an L-shaped test current hole column of the novel three-phase three-wire junction box according to the embodiment of the present application;
fig. 7 is a schematic view of an adjustable mounting mechanism of a novel three-phase three-wire junction box according to an embodiment of the present disclosure.
101-box body; 102-mounting holes; 103-hemispherical feet; 104-voltage connection board; 105-a current connection board; 106-test voltage well column; 107-test current well column; 108-voltage connection pad; 109-current connection piece; 110-voltage in and out wiring holes; 111-current in and out wiring holes; 112-insulating hole plug; 113-an adjustable mounting mechanism; 114-thread type tooth-like groove; a 115-L shaped opening; 116-an insulating cap; 117-character identification.
Detailed Description
In order to solve the problem that the current loop of the existing combined junction box can only be connected with an electric energy meter or a calibration instrument in series but cannot be connected in parallel, the application discloses a novel three-phase three-wire combined junction box through the following embodiments.
The application discloses novel three-wire combination terminal box of three-phase refers to the box body structure schematic diagram that fig. 1 shows, the terminal box includes: the test box comprises a box body 101, a box cover, a voltage inlet and outlet wiring hole 110, a current inlet and outlet wiring hole 111, a voltage connecting sheet 108, a current connecting sheet 109, a voltage connecting sheet 104, a current connecting sheet 105, a test voltage hole column 106 and a test current hole column 107.
Referring to the schematic diagram of the screw-type toothed groove of the test voltage hole column shown in fig. 5, the screw-type toothed groove 114 is arranged inside and outside the test voltage hole column 106, and the test voltage hole column 106 is used for being connected in parallel to a voltage loop of an electric energy meter or a calibration instrument.
The thread-type tooth-shaped groove 114 is beneficial to connecting the voltage connection wires of the test instrument or the electric energy meter more firmly and reliably.
Referring to the L-shaped structural schematic diagram of the test current hole column shown in fig. 6, an L-shaped opening 115 is arranged at the top of the test current hole column 107, and the test current hole column 107 is used for being connected in series or in parallel to a current loop of an electric energy meter or a calibration instrument.
The L-shaped opening 115 is beneficial to more firm and reliable connection of current wiring of a test instrument or an electric energy meter.
The voltage connection boards 104 and the current connection boards 105 are alternately arranged inside the box body 101.
The test voltage hole column 106 and the voltage connecting plate 108 are arranged on the front surface of the voltage connecting plate 104, and the test current hole column 107 and the current connecting plate 109 are arranged on the front surface of the current connecting plate 105.
The voltage inlet and outlet wiring hole 110 and the current inlet and outlet wiring hole 111 are located on the upper and lower sides of the case 101.
The operation steps of the electrified replacing method of the electric energy meter or the check meter are as follows:
the original electric energy meter is connected with the junction box, the current connecting sheet 109 on the upper side face of the box body 101 is clamped, the current connecting sheet 109 on the lower side face of the box body 101 is loosened, the voltage connecting sheet 108 is clamped, the voltage terminal of the test electric energy meter is sequentially and correspondingly connected to the test voltage hole column 106 of each group of voltage connecting plates 104, whether the voltage values of the original electric energy meter and the test electric energy meter are consistent or not is checked, whether the wiring is correct and firm or not is confirmed, and the bottom data of the test electric energy meter is recorded;
then, the current terminals of the test electric energy meter are sequentially and correspondingly connected to the test current hole columns 107 in series, the positive electrode of each current terminal can be connected to the first or second test current hole column 107 of each group of current connecting plates 105, the negative electrode of each current terminal is connected to the third test current hole column 107, a parallel connection relation is formed between the current terminals and the original electric energy meter, the current value of the test electric energy meter is measured and checked by using the pincer-shaped electric energy meter, and whether the wiring is correct and firm is confirmed;
sequentially removing current wiring of the original electric energy meter, marking and wrapping by using an insulating adhesive tape;
recording the background data of the original electric energy meter, sequentially removing the voltage wiring of the original electric energy meter, marking, and wrapping by using an insulating adhesive tape;
fixing a newly-installed electric energy meter on a screen cabinet, sequentially and correspondingly connecting a voltage terminal of the newly-installed electric energy meter to the test voltage hole column 106 of each group of voltage connecting plates 104, checking whether the voltage value of the newly-installed electric energy meter is consistent with that of the test electric energy meter, and determining whether wiring is correct and firm;
correspondingly connecting current terminals of the newly-installed electric energy meter to the test current hole columns 107 in sequence, connecting the positive electrode of each current terminal to the first or second test current hole column 107 of each group of current connecting plates 105, connecting the negative electrode of each current terminal to the third test current hole column 107, forming a parallel connection relation with the test electric energy meter, measuring and checking the current value of the newly-installed electric energy meter by using the pincerlike electric current meter, and determining whether the wiring is correct and firm;
sequentially removing current wiring of the electric energy meter to be tested, measuring and checking the current value of the newly-installed electric energy meter by using the pincerlike ammeter, and determining whether the wiring is completely removed;
recording the bottom data of the test electric energy meter again, wherein the electric quantity difference value of the test electric energy meter is the electric quantity lost during the meter changing period, and then sequentially dismantling the electric pressure connection wires of the test electric energy meter;
and after the meter is changed, confirming that the newly-installed electric energy meter works normally, and confirming the recorded bottom degree data of the changed electric energy meter, the electric quantity lost during the meter changing of the test electric energy meter and a customer.
The application discloses novel three-wire combination terminal box of three-phase includes: the box body 101, the box cover, the voltage inlet and outlet wiring hole 110, the current inlet and outlet wiring hole 111, the voltage connecting sheet 108, the current connecting sheet 109, the voltage connecting sheet 104, the current connecting sheet 105, the test voltage hole column 106 and the test current hole column 107, wherein the test voltage hole column 106 is internally and externally provided with a thread-shaped tooth-shaped groove 114, the voltage loop is used for being connected into an electric energy meter or a calibration instrument in parallel, the top of the test current hole column 107 is provided with an L-shaped opening 115, the current loop is used for being connected into an electric energy meter or a calibration instrument in series or in parallel, the voltage connecting plate 104 and the current connecting plate 105 are alternately arranged inside the box body 101, the front face of the voltage connecting plate 104 is provided with a test voltage hole column 106 and a voltage connecting plate 108, the front face of the current connecting plate 105 is provided with a test current hole column 107 and a current connecting plate 109, and a voltage access wiring hole 110 and a current access wiring hole 111 are positioned on the upper side and the lower side of the box body 101.
This application has solved current loop of current joint terminal box and can only establish ties electric energy meter or check-up instrument, and can not realize parallelly connected problem, has satisfied the requirement of the zero loss of electrified meter-changing electric quantity, and compare in current joint terminal box, the novel joint terminal box of this application is when carrying out the load check-up, connect the electric energy meter or the current wiring of check-up instrument in the front of joint terminal box, there is the touch screen cabinet when having solved current joint terminal box live working, the elasticity screw is wasted time and energy and the operating space scheduling problem that is not enough.
Further, the voltage connection board 104 is provided with three groups, which respectively correspond to three-phase voltages of the three-phase three-wire combined junction box.
The three groups of voltage connecting plates 104 correspond to A, B, C phase voltages respectively.
The voltage connecting plate 104 adopts a wiring mode of one wire inlet hole and multiple wire outlet holes, and each group of the voltage connecting plate 104 is provided with one test voltage hole column 106.
Further, two sets of current connection boards 105 are provided, and respectively correspond to two-phase currents of the three-phase three-wire combined junction box.
Wherein, two groups of the current connecting plates 105 respectively correspond to A, C phase currents.
The current connecting plate 105 is composed of two to four mutually independent current channels, each independent current channel adopts a wiring mode of a wire inlet hole and a wire outlet hole, and each group of current connecting plate 105 is provided with three test current hole columns 107.
Further, 2 mounting holes 102 are formed in the left side and the right side of the box body 101, each mounting hole 102 is provided with an adjustable mounting mechanism 113, the schematic view of the adjustable mounting mechanism shown in fig. 7 shows that the adjustable mounting mechanism 113 is a long rectangular hollow metal sheet, and the bottom of the box body 101 is provided with hemispherical support legs 103.
Furthermore, an insulating cap 116 is arranged at one end of each of the voltage connecting piece 108 and the current connecting piece 109, the insulating caps 116 are marked with colors according to the phase sequence of the voltage connecting piece 108 and the current connecting piece 109, and character marks 117 marked with the phase sequence are arranged on the upper side and the lower side of the box body 101.
The insulating cap 116 and the character mark 117 can effectively improve the wiring accuracy of the joint junction box.
Further, the spare voltage inlet and outlet wiring hole 110 and the spare current inlet and outlet wiring hole 111 are internally provided with insulating hole plugs 112, and the insulating hole plugs 112 are pluggable.
The insulating hole plug 112 can effectively improve the wiring accuracy of the combined junction box.
Furthermore, all the voltage channels and current channels in the box 101 are made of copper.
Further, the box body 101 and the box cover are made of high polymer polycarbonate materials and are in a full transparent state.
Wherein, the box body 101 and the box cover adopt a full transparent appearance form, which can prevent the electricity stealing person from changing in the box body 101 and at the back.
The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.
Claims (8)
1. A novel three-phase three-wire combined junction box is characterized by comprising: the device comprises a box body (101), a box cover, a voltage inlet and outlet wiring hole (110), a current inlet and outlet wiring hole (111), a voltage connecting sheet (108), a current connecting sheet (109), a voltage connecting sheet (104), a current connecting sheet (105), a test voltage hole column (106) and a test current hole column (107);
the test voltage hole column (106) is internally and externally provided with a thread-shaped tooth-shaped groove (114), and the test voltage hole column (106) is used for being connected in parallel to a voltage loop of an electric energy meter or a calibration instrument;
the top of the test current hole column (107) is provided with an L-shaped opening (115), and the test current hole column (107) is used for being connected in series or in parallel to a current loop of an electric energy meter or a calibration instrument;
the voltage connecting plates (104) and the current connecting plates (105) are alternately arranged in the box body (101);
the test voltage hole column (106) and the voltage connecting sheet (108) are arranged on the front surface of the voltage connecting plate (104), and the test current hole column (107) and the current connecting sheet (109) are arranged on the front surface of the current connecting plate (105);
the voltage inlet and outlet wiring hole (110) and the current inlet and outlet wiring hole (111) are positioned on the upper side and the lower side of the box body (101).
2. The new three-phase three-wire junction box according to claim 1, characterized in that said voltage connection board (104) has three groups, respectively corresponding to the three-phase voltages of said three-phase three-wire junction box;
the voltage connecting plate (104) adopts a wiring mode of one wire inlet hole and a plurality of wire outlet holes, and each group of voltage connecting plate (104) is provided with one test voltage hole column (106).
3. The new three-phase three-wire junction box according to claim 1, characterized in that said current connection plates (105) are provided with two groups, respectively corresponding to the two-phase currents of said three-phase three-wire junction box;
the current connecting plate (105) is composed of two to four mutually independent current channels, each independent current channel adopts a wiring mode of one wire inlet hole and one wire outlet hole, and three test current hole columns (107) are arranged on each group of current connecting plate (105).
4. The novel three-phase three-wire combined junction box as claimed in claim 1, wherein 2 mounting holes (102) are formed in each of the left and right sides of the box body (101), each mounting hole (102) is provided with an adjustable mounting mechanism (113), each adjustable mounting mechanism (113) is a long rectangular hollow metal sheet, and hemispherical support legs (103) are arranged at the bottom of the box body (101).
5. The novel three-phase three-wire combined junction box as claimed in claim 1, wherein an insulating cap (116) is arranged at one end of each of the voltage connecting piece (108) and the current connecting piece (109), the insulating caps (116) are marked with colors according to the phase sequence of the voltage connecting piece (108) and the current connecting piece (109), and character marks (117) marked according to the phase sequence are arranged on the upper side and the lower side of the box body (101).
6. The new three-phase three-wire combined junction box according to claim 1, characterized in that the spare voltage inlet and outlet wiring holes (110) and current inlet and outlet wiring holes (111) are provided with insulation hole plugs (112), and the insulation hole plugs (112) are pluggable.
7. The novel three-phase three-wire combined junction box as claimed in claim 1, wherein all the voltage channels and current channels in the box body (101) are made of copper.
8. The novel three-phase three-wire combined junction box as claimed in claim 1, wherein the box body (101) and the box cover are made of high polymer polycarbonate material and are in a fully transparent state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022444478.7U CN213843347U (en) | 2020-10-29 | 2020-10-29 | Novel three-phase three-wire combined junction box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022444478.7U CN213843347U (en) | 2020-10-29 | 2020-10-29 | Novel three-phase three-wire combined junction box |
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| Publication Number | Publication Date |
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| CN213843347U true CN213843347U (en) | 2021-07-30 |
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| CN202022444478.7U Active CN213843347U (en) | 2020-10-29 | 2020-10-29 | Novel three-phase three-wire combined junction box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820522A (en) * | 2021-09-03 | 2021-12-21 | 贵州电网有限责任公司 | Electric quantity metering combined junction box |
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2020
- 2020-10-29 CN CN202022444478.7U patent/CN213843347U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113820522A (en) * | 2021-09-03 | 2021-12-21 | 贵州电网有限责任公司 | Electric quantity metering combined junction box |
| CN113820522B (en) * | 2021-09-03 | 2024-05-24 | 贵州电网有限责任公司 | Electric quantity metering joint junction box |
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