CN109696573A - A kind of Combined Trials terminal box - Google Patents
A kind of Combined Trials terminal box Download PDFInfo
- Publication number
- CN109696573A CN109696573A CN201811503339.8A CN201811503339A CN109696573A CN 109696573 A CN109696573 A CN 109696573A CN 201811503339 A CN201811503339 A CN 201811503339A CN 109696573 A CN109696573 A CN 109696573A
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- CN
- China
- Prior art keywords
- short circuit
- connection sheet
- insulating bar
- circuit current
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
The application discloses a kind of Combined Trials terminal box, comprising: box body, voltage short circuit connection sheet, the first short circuit current connection sheet, the second short circuit current connection sheet, the first insulating bar, the second insulating bar, third insulating bar, first switch and the second switch；Box body is the main body of Combined Trials terminal box, and voltage short circuit connection sheet, the first short circuit current connection sheet and the second short circuit current connection sheet are located on the screw in box body；First insulating bar makes voltage short circuit connection sheet simultaneously switch off or connect；Second insulating bar makes the first short circuit current connection sheet simultaneously switch off or connect；Third insulating bar makes the second short circuit current connection sheet simultaneously switch off or connect；The first insulating bar is manipulated by first switch；The second insulating bar and third insulating bar are manipulated by second switch.It using terminal box above-mentioned, is able to achieve three-phase current or voltage status while switching, reduce the time of electric energy meter replacement, improve metering accuracy, and then improve user experience.
Description
Technical field
This application involves electric energy meter wiring device technical fields, more particularly to a kind of Combined Trials terminal box.
Background technique
Electric energy meter is the instrument for measuring electric energy, is one of indispensable device in electric power metering device.In low electricity
In the case where pressure (being no more than 500 volts) and low current (dozens of Ann), electric energy meter can be directly accessed circuit and carry out electrical measurement.But
It is that in the case where high voltage or high current, electric energy meter cannot directly access route, voltage transformer or Current Mutual Inductance need to be cooperated
Device uses.Electric energy meter has certain service life, therefore electric energy meter needs to be replaced by the period, and to be showed by the period
The inspection of field school.Not influence normal electricity production and operation, electric energy meter replacement and school inspection use Combined Trials terminal box switching side
Formula is realized.
Combined Trials terminal box in the prior art, more commonly used is three-phase and four-line Combined Trials terminal box, three-phase four
The connecting terminal of line Combined Trials terminal box includes A phase, B phase, C phase and neutral connection terminal, three-phase and four-line Combined Trials wiring
The open circuit of box with to connect realized by short-circuit connection sheet.Electric energy meter is being replaced using three-phase and four-line Combined Trials terminal box
When, it needs to be replaced by the short-circuit connection sheet mutually operated in each phase middle connecting terminal.
But inventor has found in the research process of application, existing Combined Trials terminal box in use, needs
Replacement is completed by mutually operation, the time of electric energy meter replacement be increased, further, due to the nothing within the time that electric energy meter is replaced
Method is measured, and therefore, reduces metering accuracy, to reduce user experience.
Summary of the invention
Itself a kind of Combined Trials terminal box please be provide, to solve existing Combined Trials terminal box in use,
It needs to complete replacement by mutually operation, therefore the time for increasing electric energy meter replacement reduces metering accuracy, to reduce use
The problem of family is experienced.
This application discloses a kind of Combined Trials terminal box, the Combined Trials terminal box includes:
Box body, voltage short circuit connection sheet, the first short circuit current connection sheet, the second short circuit current connection sheet, the first insulating bar,
Second insulating bar, third insulating bar, first switch and the second switch；Wherein, the voltage short circuit connection sheet includes A phase, B phase, C
Mutually and neutral point voltage short circuit connection sheet, the first short circuit current connection sheet include that A phase, B phase and the first short circuit current of C phase connect
Contact pin, the second short circuit current connection sheet include A phase, B phase and C phase the second short circuit current connection sheet；
Multiple screws are provided in the box body, the side of the box body is additionally provided with multiple spliced eyes, the box body structure
At the main body of Combined Trials terminal box；
The voltage short circuit connection sheet is arranged on the screw in the box body, and the voltage short circuit connection sheet is for disconnecting
Or connect voltage circuit；
The first short circuit current connection sheet and the second short circuit current connection sheet are arranged on the screw in the box body, institute
The first short circuit current connection sheet and the second short circuit current connection sheet are stated for open or closed current circuit；
First insulating bar is bolted to connection in the voltage short circuit connection sheet, and first insulating bar is used
In driving the voltage short circuit connection sheet, voltage short circuit connection sheet is made to simultaneously switch off or connect；
Second insulating bar is bolted to connection in the first short circuit current connection sheet, second insulation
Bar makes the first short circuit current connection sheet simultaneously switch off or connect for driving the first short circuit current connection sheet；
The third insulating bar is bolted to connection in the second short circuit current connection sheet, the third insulation
Bar makes the second short circuit current connection sheet simultaneously switch off or connect for driving the second short circuit current connection sheet；
The first switch is fixedly connected on the end of first insulating bar, and the first switch is for manipulating described the
One insulating bar；
The second switch is fixedly connected on the end of second insulating bar and third insulating bar, and the second switch is used
In manipulation second insulating bar and third insulating bar.
Preferably, the box body is the box body of rigid plastics material.
Further, matched transparent box cover is additionally provided on the box body, box cover is bolted on institute
It states on box body.
Preferably, the material of the voltage short circuit connection sheet, the first short circuit current connection sheet and the second short circuit current connection sheet
Matter is copper.
Preferably, the material of first insulating bar, the second insulating bar and third insulating bar is epoxy resin.
Further, it is provided with key in the first switch, for manipulating first insulating bar.
Further, there are two keys for setting on the second switch, manipulate second insulating bar respectively and third is exhausted
Edge bar.
The embodiment of the present application discloses a kind of Combined Trials terminal box, comprising: box body, voltage short circuit connection sheet, the first electric current
Short-circuit connection sheet, the second short circuit current connection sheet, the first insulating bar, the second insulating bar, third insulating bar, first switch and second
Switch；Multiple screws are provided in the box body, the side of the box body is additionally provided with multiple spliced eyes, and the box body constitutes connection
Close the main body of test connecting box；The voltage short circuit connection sheet is arranged on the screw in the box body, and the voltage short circuit connects
Contact pin is used for open or closed voltage circuit；The first short circuit current connection sheet and the second short circuit current connection sheet are arranged in institute
It states on the screw in box body, the first short circuit current connection sheet and the second short circuit current connection sheet are used for open or closed electric current
Route；First insulating bar is bolted to connection in the voltage short circuit connection sheet, and first insulating bar is used for
The voltage short circuit connection sheet is driven, voltage short circuit connection sheet is made to simultaneously switch off or connect；Second insulating bar passes through spiral shell
Bolt is fixedly connected in the first short circuit current connection sheet, and second insulating bar is for driving first short circuit current to connect
Contact pin makes the first short circuit current connection sheet simultaneously switch off or connect；The third insulating bar is bolted to connection
In the second short circuit current connection sheet, the third insulating bar makes institute for driving the second short circuit current connection sheet
The second short circuit current connection sheet is stated to simultaneously switch off or connect；The first switch is fixedly connected on the end of first insulating bar
Portion, the first switch is for manipulating first insulating bar；The second switch be fixedly connected on second insulating bar and
The end of third insulating bar, the second switch is for manipulating second insulating bar and third insulating bar.
By the Combined Trials terminal box of the application, by switch manipulation insulating bar control three-phase voltage short circuit connection sheet or
It is turned off or on while person's short circuit current connection sheet, realizes that three-phase current or voltage status switch simultaneously, reduce electricity
The time of energy table replacement, metering accuracy is improved, and then improve user experience.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is a kind of structural schematic diagram of Combined Trials terminal box provided by the embodiments of the present application.
Wherein, 101- box body；102- voltage short circuit connection sheet；103- the first short circuit current connection sheet；The second electric current of 104-
Short-circuit connection sheet；The first insulating bar of 105-；The second insulating bar of 106-；107- third insulating bar；108- first switch；109- second
Switch.
Specific embodiment
In order to make the above objects, features, and advantages of the present application more apparent, with reference to the accompanying drawing and it is specific real
Applying mode, the present application will be further described in detail.
Itself a kind of Combined Trials terminal box please be provide, to solve existing Combined Trials terminal box in use,
It needs to complete replacement by mutually operation, therefore the time for increasing electric energy meter replacement reduces metering accuracy, to reduce use
The problem of family is experienced.
Referring to Fig.1, a kind of Combined Trials terminal box is shown, the Combined Trials terminal box includes:
Box body 101, voltage short circuit connection sheet 102, the first short circuit current connection sheet 103, the second short circuit current connection sheet
104, the first insulating bar 105, the second insulating bar 106, third insulating bar 107, first switch 108 and second switch 109；Wherein,
The voltage short circuit connection sheet 102 includes A phase, B phase, C phase and neutral point voltage short circuit connection sheet, and first short circuit current connects
Contact pin 103 includes A phase, B phase and C phase the first short circuit current connection sheet, and the second short circuit current connection sheet 104 includes A phase, B
Phase and the second short circuit current of C phase connection sheet；
Specifically, box body 101 is from left to right divided into A phase voltage connecting terminal, A phase current connecting terminal, B phase voltage
Connecting terminal, B phase current connecting terminal, C phase voltage connecting terminal, C phase current connecting terminal and neutral voltage connecting terminal, often
It is separated between one group of connecting terminal with insulating barrier, wherein the spiral shell in voltage wiring terminal is arranged in voltage short circuit connection sheet 102
It nails on, the first short circuit current connection sheet 103 and the second short circuit current connection sheet 104 are arranged at the screw in current wiring terminal
On.
Multiple screws are provided in the box body 101, the side of the box body 101 is additionally provided with multiple spliced eyes, described
The main body of the composition Combined Trials terminal box of box body 101；
Wherein, the spliced eye is used for wiring, and the wiring of test connecting box is to draw voltage transformer, current transformer
Secondary line after the series and parallel of the connecting terminal of test connecting box, then be connected to the connecting terminal of electric energy meter.Voltage circuit warp
The voltage wiring terminal of terminal box is directly merges into electric energy meter, and current circuit is through the two-way current wiring terminal of terminal box and connection
Piece is concatenated into electric energy meter, for meeting concatenation or being shorted the needs of secondary current.
The voltage short circuit connection sheet 102 is arranged on the screw in the box body 101, the voltage short circuit connection sheet
102 are used for open or closed voltage circuit；
Wherein, on two screws that voltage short circuit connection sheet 102 is disposed therein, when voltage short circuit connection sheet 102 simultaneously
It is connected on two screws, as connects, be then to disconnect when voltage short circuit connection sheet 102 only connects a screw.
The first short circuit current connection sheet 103 and the second short circuit current connection sheet 104 are arranged in the box body 101
On screw, the first short circuit current connection sheet 103 and the second short circuit current connection sheet 104 are used for open or closed current line
Road；
Wherein, on two screws that the first short circuit current connection sheet 103 is disposed therein, when the first short circuit current connection sheet
103 are connected in simultaneously on two screws, as connect, and are then disconnected when the first short circuit current connection sheet 103 only connects a screw
It opens.Similarly, on two screws that the second short circuit current connection sheet 104 is disposed therein, when the second short circuit current connection sheet 104 is same
When be connected on two screws, as connect, be then to disconnect when the second short circuit current connection sheet 104 only connects a screw.
First insulating bar 105 is bolted to connection in the voltage short circuit connection sheet 102, and described first absolutely
Edge bar 105 makes voltage short circuit connection sheet 102 simultaneously switch off or connect for driving the voltage short circuit connection sheet 102；
Wherein, position of first insulating bar 105 among A phase, B phase, C phase and neutral point voltage short circuit connection sheet is set respectively
It is equipped with the screw hole to match with bolt, the first insulating bar 105 is fixed with the voltage short circuit connection sheet 102 by bolt and is connected
It connects.
Second insulating bar 106 is bolted to connection in the first short circuit current connection sheet 103, and described
Two insulating bars 106 make the first short circuit current connection sheet 103 simultaneously for driving the first short circuit current connection sheet 103
It turns off or on；
Wherein, position of second insulating bar 106 among A phase, B phase, C phase the first short circuit current connection sheet is respectively arranged with
Second insulating bar 106 is fixed with the first short circuit current connection sheet 103 by bolt and is connected by the screw hole to match with bolt
It connects.
The third insulating bar 107 is bolted to connection in the second short circuit current connection sheet 104, and described
Three insulating bars 107 make the second short circuit current connection sheet 104 simultaneously for driving the second short circuit current connection sheet 104
It turns off or on；
Wherein, position of the third insulating bar 107 among A phase, B phase, C phase the second short circuit current connection sheet is respectively arranged with
Third insulating bar 107 and the second short circuit current connection sheet 104 are fixed by bolt and are connected by the screw hole to match with bolt
It connects.
In addition, for the loading of cooperation the first insulating bar 105, the second insulating bar 106 and third insulating bar 107, the application's
Insulating barrier in box body 101, which needs, can accommodate the first insulating bar 105, the second insulating bar 106 and third insulating bar 107
Groove lies in a horizontal plane in the first insulating bar 105, the second insulating bar 106 and third insulating bar 107 in box body 101.
The first switch 108 is fixedly connected on the end of first insulating bar 105, and the first switch 108 is used for
Manipulate first insulating bar 105；
Wherein, first insulating bar 105 is braked using first switch 108, drives first insulating bar 105 described
Voltage short circuit connection sheet 102 is simultaneously switched off or is connected.
The second switch 109 is fixedly connected on the end of second insulating bar 106 and third insulating bar 107, described
Second switch 109 is for manipulating second insulating bar 106 and third insulating bar 107.
Wherein, second insulating bar 106 and third insulating bar 107 are braked using second switch 109, make described second absolutely
Edge bar 106 and third insulating bar 107 drive the first short circuit current connection sheet 103 to simultaneously switch off or connect or the second electricity
Flow short-circuit connection sheet 104 is simultaneously switched off or is connected.
The embodiment of the present application discloses a kind of Combined Trials terminal box, comprising: box body 101, voltage short circuit connection sheet 102,
One short circuit current connection sheet 103, the second short circuit current connection sheet 104, the first insulating bar 105, the second insulating bar 106, third are exhausted
Edge bar 107, first switch 108 and second switch 109；Multiple screws, the side of the box body 101 are provided in the box body 101
Face is additionally provided with multiple spliced eyes, and the box body 101 constitutes the main body of Combined Trials terminal box；The voltage short circuit connection sheet
102 are arranged on the screw in the box body 101, and the voltage short circuit connection sheet 102 is used for open or closed voltage circuit；Institute
It states the first short circuit current connection sheet 103 and the second short circuit current connection sheet 104 is arranged on the screw in the box body 101, institute
The first short circuit current connection sheet 103 and the second short circuit current connection sheet 104 are stated for open or closed current circuit；Described first
Insulating bar 105 is bolted to connection in the voltage short circuit connection sheet 102, and first insulating bar 105 is for driving
The voltage short circuit connection sheet 102, makes voltage short circuit connection sheet 102 simultaneously switch off or connect；Second insulating bar 106 is logical
It crosses bolt to be fixedly connected in the first short circuit current connection sheet 103, second insulating bar 106 is for driving described first
Short circuit current connection sheet 103 makes the first short circuit current connection sheet 103 simultaneously switch off or connect；The third insulating bar
107 are bolted to connection in the second short circuit current connection sheet 104, and the third insulating bar 107 is for driving institute
The second short circuit current connection sheet 104 is stated, the second short circuit current connection sheet 104 is made to simultaneously switch off or connect；Described first
Switch 108 is fixedly connected on the end of first insulating bar 105, and the first switch 108 is for manipulating first insulation
Bar 105；The second switch 109 is fixedly connected on the end of second insulating bar 106 and third insulating bar 107, and described
Two switches 109 are for manipulating second insulating bar 106 and third insulating bar 107.
By the Combined Trials terminal box of the application, three-phase voltage short circuit connection sheet is controlled by switch manipulation insulating bar
102 perhaps short circuit current connection sheet while turn off or on and realize three-phase current or voltage status while switching, reduction
The time of electric energy meter replacement, metering accuracy is improved, and then improve user experience.
Preferably, the box body 101 is the box body 101 of rigid plastics material.
Wherein, the effect of plastic box body 101 is that insulation is played in addition, rigid plastics box body 101 has certain intensity
Certain supporting role.
Further, it is additionally provided with matched transparent box cover on the box body 101, box cover is bolted on
On the box body 101.
Wherein, the box cover is made of the transparent material of insulation, plays a protective role.
Preferably, the voltage short circuit connection sheet 102, the first short circuit current connection sheet 103 are connected with the second short circuit current
The material of piece 104 is copper.
Wherein, the electric conductivity of copper material is relatively good, and certainly, the application can also be other conductive metal materials,
The application is not specifically limited.
Preferably, the material of first insulating bar 105, the second insulating bar 106 and third insulating bar 107 is asphalt mixtures modified by epoxy resin
Rouge.
In the present embodiment, epoxy resin material can guarantee the first insulating bar 105, the second insulating bar 106 and third insulation
The insulating properties of bar 107, there are also certain intensity, and certainly, there is the insulating materials of some intensity also can be used for other, the application
It is not specifically limited.
Further, it is provided with key in the first switch 108, for manipulating first insulating bar 105.
In the present embodiment, first switch 108 is equipped with the key of protrusion, and key both ends respectively correspond conjunction and break, and works as key
The one end for indicating " conjunction " is pressed, and first insulating bar 105 drives A phase, B phase, C phase and neutral point voltage short circuit connection sheet simultaneously
It connects, when one end that key indicates " disconnected " is pressed, first insulating bar 105 drives A phase, B phase, C phase and neutral point voltage short
Road connection sheet simultaneously switches off.
Further, there are two keys for setting on the second switch 109, manipulate 106 He of the second insulating bar respectively
Third insulating bar 107.
Wherein, described two keys are the first key and the second key, and the both ends of the first key and the second key are respectively equal
" conjunction " " disconnected " is indicated, when one end that the first key indicates " conjunction " is pressed, second insulating bar 106 drives A phase, B phase and C phase the
One short circuit current connection sheet is also turned on, and when one end that key indicates " disconnected " is pressed, second insulating bar 106 drives A phase, B
Mutually simultaneously switched off with the first short circuit current of C phase connection sheet.Similarly, when one end that the second key indicates " conjunction " is pressed, the third
Insulating bar 107 drives A phase, B phase and C phase the second short circuit current connection sheet to be also turned on, when one end that key indicates " disconnected " is pressed,
The third insulating bar 107 drives A phase, B phase and C phase the second short circuit current connection sheet to simultaneously switch off.
Combine detailed description and exemplary example that the application is described in detail above, but these explanations are simultaneously
It should not be understood as the limitation to the application.It will be appreciated by those skilled in the art that without departing from the application spirit and scope,
A variety of equivalent substitution, modification or improvements can be carried out to technical scheme and embodiments thereof, these each fall within the application
In the range of.The protection scope of the application is determined by the appended claims.
Claims (7)
1. a kind of Combined Trials terminal box characterized by comprising
Box body, voltage short circuit connection sheet, the first short circuit current connection sheet, the second short circuit current connection sheet, the first insulating bar, second
Insulating bar, third insulating bar, first switch and the second switch；Wherein, the voltage short circuit connection sheet include A phase, B phase, C phase and
Neutral point voltage short circuit connection sheet, the first short circuit current connection sheet include that A phase, B phase are connected with the first short circuit current of C phase
Piece, the second short circuit current connection sheet include A phase, B phase and C phase the second short circuit current connection sheet；
Multiple screws are provided in the box body, the side of the box body is additionally provided with multiple spliced eyes, and the box body constitutes connection
Close the main body of test connecting box；
The voltage short circuit connection sheet is arranged on the screw in the box body, and the voltage short circuit connection sheet is for disconnecting or connecing
Logical voltage circuit；
The first short circuit current connection sheet and the second short circuit current connection sheet are arranged on the screw in the box body, and described
One short circuit current connection sheet and the second short circuit current connection sheet are used for open or closed current circuit；
First insulating bar is bolted to connection in the voltage short circuit connection sheet, and first insulating bar is used for band
The voltage short circuit connection sheet is moved, voltage short circuit connection sheet is made to simultaneously switch off or connect；
Second insulating bar is bolted to connection in the first short circuit current connection sheet, and second insulating bar is used
In driving the first short circuit current connection sheet, the first short circuit current connection sheet is made to simultaneously switch off or connect；
The third insulating bar is bolted to connection in the second short circuit current connection sheet, and the third insulating bar is used
In driving the second short circuit current connection sheet, the second short circuit current connection sheet is made to simultaneously switch off or connect；
The first switch is fixedly connected on the end of first insulating bar, and the first switch is for manipulating described first absolutely
Edge bar；
The second switch is fixedly connected on the end of second insulating bar and third insulating bar, and the second switch is for grasping
Control second insulating bar and third insulating bar.
2. Combined Trials terminal box according to claim 1, which is characterized in that
The box body is the box body of rigid plastics material.
3. Combined Trials terminal box according to claim 1, which is characterized in that
Matched transparent box cover is additionally provided on the box body, box cover is bolted on the box body.
4. Combined Trials terminal box according to claim 1, which is characterized in that
The material of the voltage short circuit connection sheet, the first short circuit current connection sheet and the second short circuit current connection sheet is copper.
5. Combined Trials terminal box according to claim 1, which is characterized in that
The material of first insulating bar, the second insulating bar and third insulating bar is epoxy resin.
6. Combined Trials terminal box according to claim 1, which is characterized in that
It is provided with key in the first switch, for manipulating first insulating bar.
7. Combined Trials terminal box according to claim 1, which is characterized in that
There are two keys for setting on the second switch, manipulate second insulating bar and third insulating bar respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811503339.8A CN109696573A (en) | 2018-12-10 | 2018-12-10 | A kind of Combined Trials terminal box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811503339.8A CN109696573A (en) | 2018-12-10 | 2018-12-10 | A kind of Combined Trials terminal box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109696573A true CN109696573A (en) | 2019-04-30 |
Family
ID=66230440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811503339.8A Pending CN109696573A (en) | 2018-12-10 | 2018-12-10 | A kind of Combined Trials terminal box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109696573A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118885A (en) * | 2019-06-27 | 2019-08-13 | 南方电网科学研究院有限责任公司 | Electric energy metering test junction box, target meter replacing method and electric energy metering device |
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| CN108490231A (en) * | 2018-03-30 | 2018-09-04 | 上海电力学院 | One kind dividing rod-type electric energy metering combined wiring box |
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|---|---|---|---|---|
| CN103399184A (en) * | 2013-08-05 | 2013-11-20 | 国家电网公司 | Joint junction box convenient for adjusting phase sequence |
| CN205426997U (en) * | 2016-03-10 | 2016-08-03 | 国网山东省电力公司济宁供电公司 | Special termination that unites of low pressure electric energy measurement |
| CN206619708U (en) * | 2017-04-01 | 2017-11-07 | 国家电网公司 | Bidirectional current terminal box |
| CN207557457U (en) * | 2017-12-01 | 2018-06-29 | 国网浙江省电力公司泰顺县供电公司 | The one transparent electric energy metering combined wiring box of bar coordinated type |
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| CN110118885A (en) * | 2019-06-27 | 2019-08-13 | 南方电网科学研究院有限责任公司 | Electric energy metering test junction box, target meter replacing method and electric energy metering device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190430 |
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| RJ01 | Rejection of invention patent application after publication |