CN103941051B - Charged pluggable high voltage electric energy metering device and method - Google Patents
Charged pluggable high voltage electric energy metering device and method Download PDFInfo
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- CN103941051B CN103941051B CN201410138066.7A CN201410138066A CN103941051B CN 103941051 B CN103941051 B CN 103941051B CN 201410138066 A CN201410138066 A CN 201410138066A CN 103941051 B CN103941051 B CN 103941051B
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Abstract
The invention provides a charged pluggable high voltage electric energy metering device which comprises a combined mutual inductor fixedly arranged on a metering cabinet back plate, a main metering drawer and an auxiliary metering drawer. A first A-phase electric energy metering component and a first C-phase electric energy metering component are arranged on the main metering drawer and form a main meter metering device together. A second A-phase electric energy metering component and a second C-phase electric energy metering component are arranged on the auxiliary metering drawer and form an auxiliary meter metering device together. The invention further provides a charged pluggable high voltage electric energy metering method. The structural mode of the metering drawers is adopted, and field mounting, detection, comparison and replacement of a user are facilitated better. Double-metering-drawer design is adopted, a standard meter can carry out charged detection on a main meter conveniently, the device and method can be used for field metering and comparison on the main meter and an auxiliary meter, the aim of metering data redundancy is achieved, and data are safer and easier to restore.
Description
Technical field
The invention belongs to Electric Energy Metering Technology field is and in particular to a kind of powered pluggable high voltage electric energy of 3-35kV is direct
Metering device and method, are related specifically to the electric energy metrical of a kind of direct electric energy metrical of drawer type high potential and major-minor table feature
Device.
Background technology
Although the direct metering device of existing 3-35kV high voltage electric energy have small volume, lightweight, save metal material, Ke Yijian
The advantages of test global error, be prevented effectively from stealing, but there is also some problems, be mainly difficult to field test and powered more
Change.
Country according to electric energy metrical and industry standard, the electric power meter of charging（Electric energy meter）Will be according to load
Amount of capacity, periodically carries out field test, is within the limits prescribed with the error proving electric energy meter.In the past using each independent
Current transformer, voltage transformer and low -voltage Watt -hour meter composition high-voltage electric-energy meter have a set of maturation scene powered
The method of inspection or the inspection that has a power failure and code, electric energy meter is powered or the replacing that has a power failure is also very easy.But disclosed integral type
Directly the high-voltage electric energy meter of metering is integrated in hot end due to gauge assembly, overall package, thus either indoor still
Outdoor products are all difficult to powered inspection, have a power failure and change also there is inconvenience more.
Chinese invention patent Publication No. CN 101216510A's《High voltage electric energy direct metered system and method》Middle introduction
High-voltage electric energy meter its current acquisition module, voltage acquisition module, electric energy metering module, communication module are just provided in A phase and C phase
Hot end, be integrated in an insulator with current sensor, voltage sensor, can only have a power failure test and overall enters
Row is changed.
Chinese utility model patent Authorization Notice No. CN 2501227Y, disclosed entitled《One kind carries Current Mutual Inductance
The metering handcart of device, voltage transformer and protection fuse》, and CN 201327959Y, disclosed entitled《Metering is little
Car》, this measuring trolley disclosed in two patent documentations is by the current transformer of 10kV or 24kV metering, voltage transformer
It is fully integrated on a dolly with high-tension fuse, its measuring instrument is the low of the voltage transformer summation current transformer of setting
Potential end is although be conducive to the quick of repair and maintenance and safety, but can only can pull out under power down mode or push.
In order to solve the problems, such as direct access high-voltage electric energy meter field test and change, spy has invented one kind and can carry electric mortiser
The direct metering device of high voltage electric energy of the drawer structure pulling out and method.
Content of the invention
The invention aims to solving above-mentioned technical problem, provide a kind of replacing 3-35kV simple, easy to maintenance
The direct metering device of high pressure three-phase electric energy.
In the present invention, fixed voltage, current combined transformer are arranged by the hot end in A, B, C three-phase,
Movably setting A phase gauge assembly and C phase gauge assembly on drawer, gauge assembly is also disposed at hot end, in drawer
Cold end arranges display terminal, with optical fiber or is wirelessly communicated between gauge assembly and display terminal.Drawer can be powered
Plug, such that it is able to easily carry out field test and replacing.
More specifically, the present invention is achieved through the following technical solutions：
A kind of powered pluggable high voltage electric power meter, mutual including the combination type being fixedly mounted on metering cabinet backboard
Sensor, and main metering drawer and secondary metering drawer；
First A phase electric energy metrical assembly and a C phase electric energy metrical assembly are mounted with main metering drawer, collectively constitute master
Table metering device；Secondary metering is mounted with the 2nd A phase electric energy metrical assembly and the 2nd C phase electric energy metrical assembly on drawer, common group
Become subtabulation metering device；
First A phase electric energy metrical assembly is connected with Signal plug, and Signal plug is corresponding with A phase signals socket；
First C phase electric energy metrical assembly is connected with Signal plug, and Signal plug is corresponding with C phase signals socket；
2nd A phase electric energy metrical assembly is connected with Signal plug, and Signal plug is corresponding with A phase signals socket；
2nd C phase electric energy metrical assembly is connected with Signal plug, and Signal plug is corresponding with C phase signals socket.
Main metering drawer and secondary metering drawer powered can be inserted or pulled out combined instrument transformer, do not result in Current Mutual Inductance
Device open circuit or voltage transformer short circuit；Main metering drawer and secondary metering drawer can individually insert combined type transformer,
Constitute the high-voltage electric-energy meter of complete set it is also possible to be inserted simultaneously into the high pressure that combined instrument transformer constitutes major-minor table structure
Electric power meter.
Further scheme is：Described combined instrument transformer is electric by A phase current mutual inductor, C phase current mutual inductor, AB phase
Pressure transformer, BC phase voltage transformer composition.
Further scheme is：The primary winding of described A phase current mutual inductor and secondary coil are all disposed within the height of A phase
Potential end, its primary winding accesses A phase current, secondary coil is concurrently accessed the major and minor A phase signals socket measuring drawer；
The primary winding of described C phase current mutual inductor and secondary coil are all disposed within the hot end of C phase, its primary winding
Access C phase current, secondary coil are concurrently accessed the C phase signals socket of major and minor drawer.
The current terminal of the signal plug of A phase metering units and C phase metering units signal plug can carry automatic short circuit
Function, when Signal plug inserts, electric current automatically accesses, when Signal plug is extracted, electric current automatic short circuit；
Current transformer adopts the current transformer of electromagnetic type, or the electronic current mutual inductor using small voltage output,
Or low power consumption current transformer.
Further scheme is：The primary winding of described AB phase voltage transformer accesses AB phase voltage, and secondary coil sets
Put the hot end in A phase power supply, be concurrently accessed the A phase signals socket of major and minor drawer；The primary winding of BC phase voltage transformer
Access BC phase voltage, secondary coil is arranged on the hot end of C phase power supply, is concurrently accessed the C phase signals socket of major and minor drawer；
Described voltage transformer adopts electromagnetic potential transformer, capacitance voltage sensor or resistive voltage sensor.
Further scheme is：Display terminal is had on described main metering drawer, secondary metering drawer has display terminal, shows
Show the terminal and terminal cold end in drawer, electric energy metrical assembly is with adopting optical fiber or wireless between display terminal
Mode is communicated.
Further scheme is：A described A phase electric energy metrical assembly and the 2nd A phase electric energy metrical assembly are all to connect
On the high potential of A phase, a C phase electric energy metrical assembly and the 2nd C phase electric energy metrical assembly are all attached to the high potential of C phase
On, realize electric current and the high potential of voltage signal directly gathers and carries out the metering of electric energy.
In the application, display terminal can pass through multiple telecommunication medias（Optical fiber, wireless, infrared, GPRS）Meter with user
Quantity collection system is communicated.
In addition, it is necessary to explanation, metering drawer including but not limited to drawer-type structure or the slideway of the present invention
Formula structure, scroll wheel structure, or other similar can band is electrically interposed in, pushes and extracts out, removes under high voltages structure.
Present invention also offers based on the powered pluggable high electricity on aforementioned powered pluggable high voltage electric power meter
Pressure electric energy gauging method, and specifically adopt any one in following three kinds of modes：
First kind of way：Directly Shift Method
(1), when supply load normally runs, it is only inserted a metering drawer, load is measured；
(2), by the time cycle of regulation, periodically insert another drawer positions with the metering drawer qualified through inspection, replace
Alternatively front metering drawer measures to load；
(3) the metering drawer before exiting；
(4) the metering drawer replaced, after inspection calibration, is replaced for next round；
The second way：Single performance school method
(1) when supply load normally runs, it is only inserted main metering drawer, by main metering drawer, load is measured；
(2) when needing to enter line period field-checking to the gauge assembly in main metering drawer, insertion secondary metering drawer, secondary
It is provided with metering drawer and meets metrological legislation required standard gauge assembly, load is carried out with the synchronous measurement of a period of time,
And the continuous data of main metering drawer and secondary metering drawer is compared, whether expired with the continuous data judging main metering drawer
The requirement of sufficient accuracy；
If (3) the continuous data of main metering drawer meets and requires, secondary metering drawer can be exited；
(4), when the continuous data judging main metering drawer exceeds the range of error of regulation, main metering drawer can be extracted out,
Offline main metering drawer gauge assembly being processed and verifying, reinsert satisfaction requirement；
(5), during main metering drawer exits, measured by secondary metering drawer；
The third mode：Double table Comparison Methods
(1), when supply load normally runs, it is inserted simultaneously into main metering drawer and secondary metering drawer, load is measured；
(2) periodically the continuous data of main metering drawer and secondary metering drawer is compared, to judge that two Sets of Measurement data are
No overproof；
(3) without overproof, then continue to run with；
If (4) overproof, extract main metering drawer one by one out and secondary metering drawer carries out off-line check, which is to judge
The metering of metering drawer is overproof；
(5) could be used without overproof metering drawer data as the continuous data to load；
(6) reinsert and meet the metering drawer requiring, recover normally double meter amount alignments.
The invention has the advantages that：
1. using the frame mode of metering drawer, the more conducively in-site installation of user, inspection, comparison, replacing；
2. powered inspection is carried out it is also possible to be used for major-minor using double metering drawer design, standard scale easy to use to master meter
The situ metrology of table compares, and reaches the purpose of continuous data redundancy so that data is safer is more easy to recovery；
3. using fixing installation, electric energy metrical assembly is arranged on high potential and avoids wiring error combined instrument transformer, prevents
Only wrong meter, leakage quantity calculation, the generation of electricity theft prevention.
The present invention is compared with prior art：
1. the in-site installation of the present invention, inspection, replacing are simple, convenient；
2. the inspection of metering units, replacing can powered be carried out；
3. can be using the double metering method of major-minor table.
Brief description
Fig. 1 is the electrical principle block diagram of the present invention；
Fig. 2 is the structural representation of the present invention.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in accompanying drawing 1,2, a kind of powered pluggable high voltage electric power meter, carry on the back including being fixedly mounted on metering cabinet
Combined instrument transformer 10 on plate, and main metering drawer 21 and secondary metering drawer 31；In figure, 1 is A phase, and 2 is B phase, and 3 is C
Phase.
First A phase electric energy metrical assembly 22 and a C phase electric energy metrical assembly 23 are mounted with main metering drawer 21, jointly
Composition master meter metering device；It is mounted with the 2nd A phase electric energy metrical assembly 32 and the 2nd C phase electric energy metrical group on secondary metering drawer 31
Part 33, collectively constitutes subtabulation metering device；
First A phase electric energy metrical assembly 22 is connected with Signal plug 24, and Signal plug 24 is corresponding with A phase signals socket 11；
First C phase electric energy metrical assembly 23 is connected with Signal plug 25, and Signal plug 25 is corresponding with C phase signals socket 12；
2nd A phase electric energy metrical assembly 32 is connected with Signal plug 34, and Signal plug 34 is corresponding with A phase signals socket 13；
2nd C phase electric energy metrical assembly 33 is connected with Signal plug 35, and Signal plug 35 is corresponding with C phase signals socket 14.
Described combined instrument transformer 10 by A phase current mutual inductor 15, C phase current mutual inductor 16, AB phase voltage transformer 17,
BC phase voltage transformer 18 forms.
The primary winding of described A phase current mutual inductor 15 and secondary coil are all disposed within the hot end of A phase, its primary line
Circle accesses A phase current, secondary coil is concurrently accessed the major and minor A phase signals socket 11,13 measuring drawer；
The primary winding of described C phase current mutual inductor 16 and secondary coil are all disposed within the hot end of C phase, its primary line
Circle access C phase current, secondary coil are concurrently accessed the C phase signals socket 12,14 of major and minor drawer.
The current terminal of the signal plug 11,13 of A phase metering units and C phase metering units signal plug 12,14 can carry
There is automatic short circuit function, electric current automatically accesses when Signal plug 24,25,34,35 inserts, in Signal plug 24,25,34,35
When extracting, electric current automatic short circuit；
Current transformer adopts the current transformer of electromagnetic type, or the electronic current mutual inductor using small voltage output,
Or low power consumption current transformer.
The primary winding of described AB phase voltage transformer 17 accesses AB phase voltage, and secondary coil is arranged on the height of A phase power supply
Potential end, is concurrently accessed the A phase signals socket 11,13 of major and minor drawer；The primary winding of BC phase voltage transformer 18 accesses BC phase
Voltage, secondary coil is arranged on the hot end of C phase power supply, is concurrently accessed the C phase signals socket 12,14 of major and minor drawer；
Described voltage transformer adopts electromagnetic potential transformer, capacitance voltage sensor or resistive voltage sensor.
Display terminal 26 is had on described main metering drawer 21, secondary metering drawer 31 has display terminal 36, display terminal 26
Be arranged on the cold end of drawer with display terminal 36, electric energy metrical assembly between display terminal adopt optical fiber or wireless mode
Communicated.
A described A phase electric energy metrical assembly 22 and the 2nd A phase electric energy metrical assembly 32 are all attached to the high potential of A phase
On, a C phase electric energy metrical assembly 23 and the 2nd C phase electric energy metrical assembly 33 are all attached on the high potential of C phase, realize electricity
The high potential of stream and voltage signal directly gathers and carries out the metering of electric energy.
In the application, display terminal can pass through multiple telecommunication medias（Optical fiber, wireless, infrared, GPRS）Meter with user
Quantity collection system is communicated.
In addition, it is necessary to explanation, metering drawer including but not limited to drawer-type structure or the slideway of the present invention
Formula structure, scroll wheel structure, or other similar can band is electrically interposed in, pushes and extracts out, removes under high voltages structure.
Present invention also offers based on the powered pluggable high electricity on aforementioned powered pluggable high voltage electric power meter
Pressure electric energy gauging method.Three kinds of metering methods can be adopted, specifically include following steps：
First kind of way：Directly Shift Method
(1), when supply load normally runs, it is only inserted a metering drawer（As main metering drawer）, load is counted
Amount；
(2), by the time cycle of regulation, periodically insert another drawer positions with the metering drawer qualified through inspection（As
Secondary metering drawer）, the metering drawer before replacing it measures to load；
(3) the metering drawer before exiting（As main metering drawer）；
(4) the metering drawer replaced, after inspection calibration, is replaced for next round.
The second way：Single performance school method
(1) when supply load normally runs, it is only inserted main metering drawer, by main metering drawer, load is measured；
(2) when needing to enter line period field-checking to the gauge assembly in main metering drawer, insertion secondary metering drawer（Secondary
It is provided with metering drawer and meet metrological legislation required standard gauge assembly）, load is carried out with the synchronous measurement of a period of time,
And the continuous data of main metering drawer and secondary metering drawer is compared, whether expired with the continuous data judging main metering drawer
The requirement of sufficient accuracy；
If (3) the continuous data of main metering drawer meets and requires, secondary metering drawer can be exited；
(4), when the continuous data judging main metering drawer exceeds the range of error of regulation, main metering drawer can be extracted out,
Offline main metering drawer gauge assembly being processed and verifying, reinsert satisfaction requirement；
(5), during main metering drawer exits, measured by secondary metering drawer.
The third mode：Double table Comparison Methods
(1), when supply load normally runs, it is inserted simultaneously into main metering drawer and secondary metering drawer, load is measured；
(2) periodically the continuous data of main metering drawer and secondary metering drawer is compared, to judge that two Sets of Measurement data are
No overproof；
(3) without overproof, then continue to run with；
If (4) overproof, extract main metering drawer one by one out and secondary metering drawer carries out off-line check, which is to judge
The metering of metering drawer is overproof；
(5) could be used without overproof metering drawer data as the continuous data to load；
(6) reinsert and meet the metering drawer requiring, recover normally double meter amount alignments.
Claims (6)
1. a kind of powered pluggable high voltage electric energy gauging method it is characterised in that：Using powered pluggable high voltage electric energy meter
Amount device carries out high voltage electric energy metrical, and specifically adopts any one in following three kinds of modes：
First kind of way：Directly Shift Method
(1), when supply load normally runs, it is only inserted a metering drawer, load is measured；
(2), by the time cycle of regulation, periodically insert another drawer positions with the metering drawer qualified through inspection, replace it
Front metering drawer measures to load；
(3) the metering drawer before exiting；
(4) the metering drawer replaced, after inspection calibration, is replaced for next round；
The second way：Single performance school method
(1) when supply load normally runs, it is only inserted main metering drawer, by main metering drawer, load is measured；
(2) when needing to enter line period field-checking to the gauge assembly in main metering drawer, insertion secondary metering drawer, secondary metering
It is provided with drawer and meets metrological legislation required standard gauge assembly, load is carried out with the synchronous measurement of a period of time, and right
The continuous data of main metering drawer and secondary metering drawer is compared, and whether meets standard with the continuous data judging main metering drawer
The requirement of exactness；
If (3) the continuous data of main metering drawer meets and requires, exit secondary metering drawer；
(4), when the continuous data judging main metering drawer exceeds the range of error of regulation, extract main metering drawer out, offline to meter
Amount assembly is processed and is verified, and reinserts and meets the main metering drawer requiring；
(5), during main metering drawer exits, measured by secondary metering drawer；
The third mode：Double table Comparison Methods
(1), when supply load normally runs, it is inserted simultaneously into main metering drawer and secondary metering drawer, load is measured；
(2) periodically the continuous data of main metering drawer and secondary metering drawer is compared, to judge whether two Sets of Measurement data surpass
Difference；
(3) without overproof, then continue to run with；
If (4) overproof, extract main metering drawer one by one out and secondary metering drawer carries out off-line check, to judge being which metering
The metering of drawer is overproof；
(5) could be used without overproof metering drawer data as the continuous data to load；
(6) reinsert and meet the metering drawer requiring, recover normally double meter amount alignments；
Described powered pluggable high voltage electric power meter includes the combined instrument transformer being fixedly mounted on metering cabinet backboard
10, and
Main metering drawer 21 and secondary metering drawer 31；
First A phase electric energy metrical assembly 22 and a C phase electric energy metrical assembly 23 are mounted with main metering drawer 21, collectively constitute
Master meter metering device；It is mounted with the 2nd A phase electric energy metrical assembly 32 and the 2nd C phase electric energy metrical assembly on secondary metering drawer 31
33, collectively constitute subtabulation metering device；
First A phase electric energy metrical assembly 22 is connected with the first Signal plug 24, the first Signal plug 24 and an A phase signals socket
11 is corresponding；
First C phase electric energy metrical assembly 23 is connected with secondary signal plug 25, secondary signal plug 25 and a C phase signals socket
12 is corresponding；
2nd A phase electric energy metrical assembly 32 is connected with the 3rd Signal plug 34, the 3rd Signal plug 34 and the 2nd A phase signals socket
13 is corresponding；
2nd C phase electric energy metrical assembly 33 is connected with the 4th Signal plug 35, the 4th Signal plug 35 and the 2nd C phase signals socket
14 is corresponding.
2. powered pluggable high voltage electric energy gauging method according to claim 1 it is characterised in that：Described combination type is mutual
Sensor 10 is by A phase current mutual inductor 15, C phase current mutual inductor 16, AB phase voltage transformer 17 and BC phase voltage transformer 18
Composition.
3. powered pluggable high voltage electric energy gauging method according to claim 2 it is characterised in that：Described A phase current
The primary winding of transformer 15 and secondary coil are all disposed within the hot end of A phase, and its primary winding accesses A phase current, secondary
Coil is concurrently accessed an A phase signals socket 11 of major and minor metering drawer, the 2nd A phase signals socket 13；
The primary winding of described C phase current mutual inductor 16 and secondary coil are all disposed within the hot end of C phase, and its primary winding connects
Enter C phase current, secondary coil is concurrently accessed a C phase signals socket 12 of major and minor drawer, the 2nd C phase signals socket 14；
First C of the first A phase signals socket 11, the 2nd A phase signals socket 13 and C phase metering units of A phase metering units believes
Number socket 12, the current terminal of the 2nd C phase signals socket 14 carry automatic short circuit function, believe in the first Signal plug 24, second
When number plug 25, the 3rd Signal plug 34 and the 4th Signal plug 35 insertion, electric current automatically accesses, the first Signal plug 24,
When secondary signal plug 25, the 3rd Signal plug 34 and the 4th Signal plug 35 are extracted, electric current automatic short circuit；
Current transformer adopts the current transformer of electromagnetic type, or the electronic current mutual inductor using small voltage output, or low
Static current of lcd transformer.
4. the powered pluggable high voltage electric energy gauging method according to Claims 2 or 3 it is characterised in that：Described AB phase
The primary winding of voltage transformer 17 accesses AB phase voltage, and secondary coil is arranged on the hot end of A phase power supply, is concurrently accessed
First A phase signals socket 11 of major and minor drawer, the 2nd A phase signals socket 13；The primary winding of BC phase voltage transformer 18 accesses
BC phase voltage, secondary coil is arranged on the hot end of C phase power supply, is concurrently accessed a C phase signals socket of major and minor drawer
12nd, the 2nd C phase signals socket 14；
Described voltage transformer adopts electromagnetic potential transformer, capacitance voltage sensor or resistive voltage sensor.
5. powered pluggable high voltage electric energy gauging method according to claim 1 it is characterised in that：Described main metering is taken out
Display terminal 26 is had on drawer 21, secondary metering drawer 31 has display terminal 36, display terminal 26 is arranged on main metering drawer 21
Cold end, display terminal 36 is arranged on the cold end of secondary metering drawer 31, and electric energy metrical assembly is adopted between display terminal
Communicated with optical fiber or wireless mode.
6. powered pluggable high voltage electric energy gauging method according to claim 1 it is characterised in that：A described A phase
Electric energy metrical assembly 22 and the 2nd A phase electric energy metrical assembly 32 are all attached on the high potential of A phase, a C phase electric energy metrical
Assembly 23 and the 2nd C phase electric energy metrical assembly 33 are all attached on the high potential of C phase, realize the high electricity of electric current and voltage signal
Position directly gathers and carries out the metering of electric energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410138066.7A CN103941051B (en) | 2014-04-08 | 2014-04-08 | Charged pluggable high voltage electric energy metering device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410138066.7A CN103941051B (en) | 2014-04-08 | 2014-04-08 | Charged pluggable high voltage electric energy metering device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103941051A CN103941051A (en) | 2014-07-23 |
| CN103941051B true CN103941051B (en) | 2017-02-15 |
Family
ID=51188801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410138066.7A Expired - Fee Related CN103941051B (en) | 2014-04-08 | 2014-04-08 | Charged pluggable high voltage electric energy metering device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103941051B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301296B (en) * | 2015-11-27 | 2023-07-18 | 中国电力科学研究院 | Live plug connector of low-voltage metering box |
| CN106199100A (en) * | 2016-08-12 | 2016-12-07 | 陈劲游 | Building block type intelligent electric energy meter |
| CN110165593B (en) * | 2019-05-29 | 2023-03-24 | 中国电力科学研究院有限公司 | Live replacement device and method for current transformer for metering cabinet |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2087392U (en) * | 1990-04-12 | 1991-10-23 | 云南省供用电技术服务部 | Proportioning device of high voltage electric energy |
| CN2501227Y (en) * | 2001-08-13 | 2002-07-17 | 广东省四会市互感器厂 | Metering hand cart with current transformer, voltage transformer and protective fuse |
| JP3603876B2 (en) * | 2002-04-25 | 2004-12-22 | 松下電器産業株式会社 | Weighing device |
| CN2812018Y (en) * | 2004-07-16 | 2006-08-30 | 张玉萍 | 10KV and 35KV triphase electronics high-pressure electric energy meter |
| CN2911699Y (en) * | 2005-07-19 | 2007-06-13 | 董庆陆 | Bundled inserting, watt-hour metering and electricity embezzling-proof device |
| CN2847611Y (en) * | 2005-09-01 | 2006-12-13 | 宋振群 | Drawer type reactive power automatic compensation power box |
| CN2826774Y (en) * | 2005-09-18 | 2006-10-11 | 申继光 | Combined drawer type multifunctional distribution box |
| CN101216510B (en) * | 2008-01-02 | 2012-05-09 | 武汉国测恒通智能仪器有限公司 | High voltage electric energy direct metered system and method |
| CN201327959Y (en) * | 2008-12-09 | 2009-10-14 | 常熟开关制造有限公司(原常熟开关厂） | Measuring trolley |
| CN201548601U (en) * | 2009-11-20 | 2010-08-11 | 湘潭电气设备制造有限责任公司 | High-voltage metering box |
| CN201781192U (en) * | 2010-08-05 | 2011-03-30 | 广西银河迪康电气有限公司 | Electric energy metering cabinet |
| CN203772911U (en) * | 2014-04-08 | 2014-08-13 | 武汉国测恒通智能仪器有限公司 | Charged pluggable high voltage electric energy metering device |
-
2014
- 2014-04-08 CN CN201410138066.7A patent/CN103941051B/en not_active Expired - Fee Related
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|---|---|
| CN103941051A (en) | 2014-07-23 |
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