CN209014614U - A kind of double no-load voltage ratio electric energy metering combined wiring boxes - Google Patents
A kind of double no-load voltage ratio electric energy metering combined wiring boxes Download PDFInfo
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- CN209014614U CN209014614U CN201821606947.7U CN201821606947U CN209014614U CN 209014614 U CN209014614 U CN 209014614U CN 201821606947 U CN201821606947 U CN 201821606947U CN 209014614 U CN209014614 U CN 209014614U
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Abstract
The utility model provides a kind of double no-load voltage ratio electric energy metering combined wiring boxes, including box body and lid, several electric current wiring units are provided on box body, electric current wiring units include the first connection path, second connection path, third connection path and the 4th connection path, several screw holes are provided on each connection path, both ends are respectively arranged with incoming line and line outlet, connection path is connect by screw hole with box body, the first plectrum boss is additionally provided in electric current wiring units, several screw holes are correspondingly arranged on connection path on first plectrum boss, an electric current connection sheet is provided on first plectrum boss, one end of electric current connection sheet is connect with the second connection path screw, the other end can be rotated and connect with first connection path or third connection path screw, the top interference of lid and box body connects.The utility model passes through the no-load voltage ratio of terminal box switching electric current mutual inductor, realizes and completes no-load voltage ratio switching at primary scene in case of constant power and not.
Description
Technical field
The utility model relates to electric energy metering combined wiring box technical field, in particular to a kind of double no-load voltage ratio electrical energy measurement connection
Splice grafting wire box.
Background technique
Watt-hour meter junction box is the special junction box in electric energy metering device standard wiring, plays wiring and safeguard protection is made
With the terminal box of kilowatt-hour meter is essential component part in electrical energy measurement.As the technology of all kinds of mutual inductors constantly mentions
Height, current transformer becomes the double no-load voltage ratios generally used now by original single transformation ratio current transformer in terms of electrical energy measurement
Current transformer, and accordingly for the terminal box of electrical energy measurement or monotropic ratio.
In actual production work, following problems are frequently present of in the high voltage supply metering user of rural area, are born at the busy farming season
Lotus is big, and then load is small when slack season, and when load is smaller, the secondary current of current transformer accordingly becomes smaller, and directly affects kilowatt-hour meter
The accuracy of measuring.At this point, the secondary connection of such as replacement current transformer or the change current transformer that has a power failure, it will cause work
The problems such as amount increases, frequency of power cut increases and power-on time reduces.Therefore, it is badly in need of a kind of terminal box, terminal box can be utilized
The no-load voltage ratio of switching electric current mutual inductor, to adapt to double transformation ratio current transformers and realize in case of constant power and not primary
Scene can complete the switching of no-load voltage ratio.
Summary of the invention
In consideration of it, passing through terminal box switching electric current the utility model proposes a kind of double no-load voltage ratio electric energy metering combined wiring boxes
The no-load voltage ratio of mutual inductor is realized and completes no-load voltage ratio switching at primary scene in case of constant power and not.
The technical solution of the utility model is achieved in that
A kind of double no-load voltage ratio electric energy metering combined wiring boxes, including box body and lid are provided with several electricity on the box body
Wiring units are flowed, the electric current wiring units connect including the first connection path, the second connection path, third connection path and the 4th
Line passage is provided with several screw holes on each connection path, and both ends are respectively arranged with incoming line and line outlet, connection path
It is connect by the screw hole with the box body, is additionally provided with the first plectrum boss in the electric current wiring units, described first
Several screw holes are correspondingly arranged on plectrum boss with connection path, electric current connection is provided on the first plectrum boss
Piece, one end of the electric current connection sheet are connect with the second connection path screw, and the other end can be rotated and first connection path
Or the connection of third connection path screw, the lid are connect with the top interference of the box body.
Further, the second plectrum boss, the second plectrum boss and institute are additionally provided in the electric current wiring units
It states the first plectrum boss to be symmetrical arranged, is correspondingly arranged on several screw holes, institute on the second plectrum boss with connection path
It states and is provided with an electric current connection sheet on the second plectrum boss, one end of the electric current connection sheet and third connection path screw connect
It connects, the other end can be rotated and connect with second connection path or the 4th connection path screw.
Further, described rotatable one end of electric current connection sheet is set as symmetrical two semi-circular recesses.
Further, the side of the electric current connection sheet is additionally provided with bending protrusion.
Further, in first connection path, the second connection path, third connection path and the 4th connection path
Between position be provided with a connection bolt.
Further, the quantity of the electric current wiring units is three, is evenly arranged in the box body.
Further, be additionally provided with several voltage link units in the box body, the voltage link unit with it is described
Electric current wiring units interlaced arrangement.
Further, the voltage link unit includes input terminal, outlet terminal and voltage connection sheet, the end of incoming cables
The sub incoming line with the box body is connect, and the outlet terminal is connect with the line outlet of the box body, the input terminal and go out
Line terminals are fixed by screw and the box body, and the input terminal is connected by the voltage connection sheet and the outlet terminal
It connects.
Further, the quantity of the voltage link unit is four.
Further, the lid uses transparent plastics material.
Compared with prior art, the utility model has the beneficial effects that
(1) the second connection path and the first wiring may be selected by the way that rotatable electric current connection sheet is arranged in the utility model
Channel connection or the second connection path are connected to third connection path, thus realize the switching of the current transformer of different no-load voltage ratios,
It can be achieved to complete no-load voltage ratio switching at primary scene in case of constant power and not, not only ensure that the safety of operating personnel, but also protect
The duration of power supply has been demonstrate,proved, it is easy to operate.
(2) the utility model in box body by being arranged voltage link unit, so that the application range of terminal box is extended,
The terminal box cannot be only used for the connection of current transformer and kilowatt-hour meter, can be also used for the company of voltage transformer and kilowatt-hour meter
It connects.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only the preferred reality of the utility model
Example is applied, it for those of ordinary skill in the art, without any creative labor, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the overall structure diagram of the utility model.
Fig. 3 is the structural schematic diagram inside the utility model box body.
Fig. 4 is the structural schematic diagram of the utility model electric current connection sheet 4.
Fig. 5 is the circuit connection diagram of the utility model.
In figure, 1 it is box body, 2 is lid, 3 is electric current wiring units, 31 is the first connection path, 32 is that the second wiring is logical
Road, 33 be third connection path, 34 be the 4th connection path, 35 be screw hole, 36 be incoming line, 37 be line outlet, 38 be
One plectrum boss, 39 be the second plectrum boss, 4 be electric current connection sheet, 41 be semi-circular recesses, 42 be bending protrusion, 5 be wiring
Bolt, 6 be voltage link unit, 61 be input terminal, 62 be outlet terminal, 63 be voltage connection sheet.
Specific embodiment
In order to be best understood from the utility model technology contents, two specific embodiments are provided below, and in conjunction with attached drawing to this
Utility model is described further.
Embodiment 1
Referring to figs. 1 to 4, a kind of double no-load voltage ratio electric energy metering combined wiring boxes, including box body 1 and lid 2, the box body 1
On be provided with several electric current wiring units 3, the electric current wiring units 3 include the first connection path 31, the second connection path
32, third connection path 33 and the 4th connection path 34 are provided with several screw holes 35, both ends difference on each connection path
It is provided with incoming line 36 and line outlet 37, connection path is connect by the screw hole 35 with the box body 1, the electric current wiring
It is additionally provided with the first plectrum boss 38 on unit 3, is correspondingly arranged on several with connection path on the first plectrum boss 38
Screw hole 35 is provided with an electric current connection sheet 4, one end and second of the electric current connection sheet 4 on the first plectrum boss 38
The connection of 32 screw of connection path, the other end can be rotated and connect with first connection path 31 or 33 screw of third connection path,
The lid 2 is connect with the top interference of the box body 1.By the way that rotatable electric current connection sheet 4 is arranged, the second wiring may be selected
Channel 32 is connected to the first connection path 31 or the second connection path 32 is connected to third connection path 33, to realize different changes
The switching of the current transformer of ratio both guaranteed, it can be achieved that in case of constant power and not in primary scene completion no-load voltage ratio switching
The safety of operating personnel, in turn ensures the duration of power supply, easy to operate.
The connection principle of the present embodiment is as follows:
Referring to Fig. 5, there are three leading-out terminals, respectively S1, S2 and S3, such as the group of S1 and S3 for the current transformer of double no-load voltage ratios
The group for being combined into 500/5A, S2 and S3 is combined into 600/5A, and S1 is electrically connected with the incoming line 36 of the first connection path 31, and S2 connects with third
The incoming line 36 of line passage 33 is electrically connected, and S3 is electrically connected with the incoming line 36 of the 4th connection path 34, at the same time, the second wiring
The line outlet 37 in channel 32 is electrically connected with kilowatt-hour meter, and the line outlet 37 of the 4th connection path 34 is electrically connected with kilowatt-hour meter.Due to electricity
One end of stream connection sheet 4 is connect with 32 screw of the second connection path, rotatable end and the first connection path when electric current connection sheet 4
When 31 screws connect, what kilowatt-hour meter measured at this time is the electric current in the circuit of S1 and S3 formation, i.e., that kilowatt-hour meter measurement is 500/5A
Current transformer electric current；When the rotatable end of electric current connection sheet 4 is connect with 33 screw of third connection path, electric degree at this time
Table measurement be the circuit that S2 and S3 are formed electric current, i.e., kilowatt-hour meter measurement be 600/5A current transformer electric current.
Preferably, be additionally provided with the second plectrum boss 39 in the electric current wiring units 3, the second plectrum boss 39 with
The first plectrum boss 38 is symmetrical arranged, and is correspondingly arranged on several screws with connection path on the second plectrum boss 39
Hole 35 is provided with an electric current connection sheet 4, one end of the electric current connection sheet 4 and third wiring on the second plectrum boss 39
The connection of 33 screw of channel, the other end can be rotated and connect with second connection path 32 or 34 screw of the 4th connection path.In electricity
Spend table normal use when, the rotatable end of the electric current connection sheet 4 both got along well the second connection path 32 connection, also get along well the 4th wiring
Channel 34 connects.When needing to overhaul kilowatt-hour meter, at this time by rotatable one end of electric current connection sheet 4 and the 4th wiring
The connection of 34 screw of channel, S2 and S3 are then connected at this time, realize the short circuit of current transformer, avoid the electric current stream of current transformer
It is convenient that kilowatt-hour meter is overhauled to kilowatt-hour meter.
Preferably, the rotatable one end of the electric current connection sheet 4 is set as symmetrical two semi-circular recesses 41.By electric current
The rotatable one end of connection sheet 4 is set as symmetrical semi-circular recesses 41, facilitates the connection path spiral shell of electric current connection sheet 4 Yu two sides
Nail connection.
Preferably, the side of the electric current connection sheet 4 is additionally provided with a bending protrusion 42.Bending protrusion 42 is set, is being needed
When switching no-load voltage ratio, pliers is facilitated to clamp, convenient for operation.
Preferably, first connection path 31, the second connection path 32, third connection path 33 and the 4th connection path
34 middle position is provided with a connection bolt 5.Setting connection bolt 5 carries out taking electricity when conveniently overhauling kilowatt-hour meter.
Preferably, the quantity of the electric current wiring units 3 is three, is evenly arranged in the box body 1.Three electric currents are arranged to connect
For line unit 3, it can be achieved that a terminal box connects three current transformers, integration is good.
A kind of double no-load voltage ratio electric energy metering combined wiring boxes provided in this embodiment, by the way that rotatable electric current connection sheet is arranged
4, optional second connection path 32 is connected to the first connection path 31 or the second connection path 32 connects with third connection path 33
It is logical, to realize the switching of the current transformer of different no-load voltage ratios, it can be achieved that in case of constant power and not complete at primary scene
Switch at no-load voltage ratio, both ensure that the safety of operating personnel, in turn ensures the duration of power supply, it is easy to operate.
Embodiment 2
The present embodiment the difference from embodiment 1 is that, several voltage link units 6, institute are additionally provided in the box body 1
State voltage link unit 6 and 3 interlaced arrangement of electric current wiring units.By the way that voltage link unit 6 is arranged in terminal box, from
And the application range of terminal box is extended, which cannot be only used for the connection of current transformer and kilowatt-hour meter, can also use
In the connection of voltage transformer and kilowatt-hour meter.
Specifically, the voltage link unit 6 includes input terminal 61, outlet terminal 62 and voltage connection sheet 63, it is described
Input terminal 61 is connect with the incoming line 36 of the box body 1, and the outlet terminal 62 is connect with the line outlet 37 of the box body 1,
The input terminal 61 and outlet terminal 62 are fixed by screw and the box body 1, and the input terminal 61 passes through the voltage
Connection sheet 63 is connect with the outlet terminal 62.Input terminal 61 is electrically connected with voltage transformer, outlet terminal 62 and kilowatt-hour meter
Then input terminal 61 and outlet terminal 62 are connected for electrical connection, voltage connection sheet 63.
Preferably, the quantity of the voltage link unit 6 is four.Four voltage link units 6 are set, wherein three electricity
Compression bonded line unit 6 is electrically connected with the voltage transformer of each phase of three-phase alternating current respectively, and the 4th voltage link unit 6 is then used
In connection zero curve.
Preferably, the lid 2 uses transparent plastics material.Lid 2 uses transparent plastics material, convenient for observation terminal box
Interior wiring condition.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of double no-load voltage ratio electric energy metering combined wiring boxes, which is characterized in that including box body and lid, be provided on the box body
Several electric current wiring units, the electric current wiring units include the first connection path, the second connection path, third connection path
With the 4th connection path, several screw holes are provided on each connection path, both ends are respectively arranged with incoming line and line outlet,
Connection path is connect by the screw hole with the box body, and the first plectrum boss is additionally provided in the electric current wiring units,
Several screw holes are correspondingly arranged on the first plectrum boss with connection path, are provided with one on the first plectrum boss
Electric current connection sheet, one end of the electric current connection sheet are connect with the second connection path screw, and the other end can be rotated and described first
Connection path or the connection of third connection path screw, the lid are connect with the top interference of the box body.
2. a kind of double no-load voltage ratio electric energy metering combined wiring boxes as described in claim 1, which is characterized in that the electric current wiring list
The second plectrum boss is additionally provided in member, the second plectrum boss and the first plectrum boss are symmetrical arranged, and described second
Several screw holes are correspondingly arranged on plectrum boss with connection path, electric current connection is provided on the second plectrum boss
One end of piece, the electric current connection sheet is connect with third connection path screw, and the other end can be rotated and second connection path
Or the 4th connection path screw connection.
3. a kind of double no-load voltage ratio electric energy metering combined wiring boxes as described in any one of claims 1 or 2, which is characterized in that
Described rotatable one end of electric current connection sheet is set as symmetrical two semi-circular recesses.
4. a kind of double no-load voltage ratio electric energy metering combined wiring boxes as claimed in claim 3, which is characterized in that the electric current connection sheet
Side be additionally provided with a bending protrusion.
5. a kind of double no-load voltage ratio electric energy metering combined wiring boxes as described in claim 1, which is characterized in that first wiring is logical
Road, the second connection path, third connection path and the 4th connection path middle position be provided with a connection bolt.
6. a kind of double no-load voltage ratio electric energy metering combined wiring boxes as described in claim 1, which is characterized in that the electric current wiring list
The quantity of member is three, is evenly arranged in the box body.
7. a kind of double no-load voltage ratio electric energy metering combined wiring boxes as described in claim 1, which is characterized in that also set in the box body
It is equipped with several voltage link units, the voltage link unit and the electric current wiring units interlaced arrangement.
8. a kind of double no-load voltage ratio electric energy metering combined wiring boxes as claimed in claim 7, which is characterized in that the voltage link list
Member includes input terminal, outlet terminal and voltage connection sheet, and the input terminal connect with the incoming line of the box body, it is described out
Line terminals are connect with the line outlet of the box body, and the input terminal and outlet terminal are fixed by screw and the box body, institute
It states input terminal and is connect by the voltage connection sheet with the outlet terminal.
9. a kind of double no-load voltage ratio electric energy metering combined wiring boxes as claimed in claim 8, which is characterized in that the voltage link list
The quantity of member is four.
10. a kind of double no-load voltage ratio electric energy metering combined wiring boxes as described in claim 1, which is characterized in that the lid uses
Transparent plastics material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821606947.7U CN209014614U (en) | 2018-09-30 | 2018-09-30 | A kind of double no-load voltage ratio electric energy metering combined wiring boxes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821606947.7U CN209014614U (en) | 2018-09-30 | 2018-09-30 | A kind of double no-load voltage ratio electric energy metering combined wiring boxes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209014614U true CN209014614U (en) | 2019-06-21 |
Family
ID=66834868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821606947.7U Active CN209014614U (en) | 2018-09-30 | 2018-09-30 | A kind of double no-load voltage ratio electric energy metering combined wiring boxes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209014614U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113611519A (en) * | 2021-07-29 | 2021-11-05 | 国网重庆市电力公司营销服务中心 | Terminal box |
| CN113820522A (en) * | 2021-09-03 | 2021-12-21 | 贵州电网有限责任公司 | Electric quantity metering combined junction box |
-
2018
- 2018-09-30 CN CN201821606947.7U patent/CN209014614U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113611519A (en) * | 2021-07-29 | 2021-11-05 | 国网重庆市电力公司营销服务中心 | Terminal box |
| 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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