CN206023235U - A kind of AC three-phase load automatic-balancing system - Google Patents
A kind of AC three-phase load automatic-balancing system Download PDFInfo
- Publication number
- CN206023235U CN206023235U CN201620936532.0U CN201620936532U CN206023235U CN 206023235 U CN206023235 U CN 206023235U CN 201620936532 U CN201620936532 U CN 201620936532U CN 206023235 U CN206023235 U CN 206023235U
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- Prior art keywords
- contactor
- contact
- phase
- switch
- relay
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
The utility model is related to low voltage power transmission technical field, a kind of AC three-phase load automatic-balancing system is provided, including A phase sampler circuits, B phase sampler circuits, C phase sampler circuits, rectification circuit, single-chip microcomputer, relay assembly circuit and first contactor, second contactor and the 3rd contactor；Rectification circuit connects single-chip microcomputer, single-chip microcomputer connects relay assembly circuit, first contactor includes that the first contact-making switch and the first hot-wire coil, second contactor include that the second contact-making switch and the second hot-wire coil, the 3rd contactor include the 3rd contact-making switch and the 3rd hot-wire coil；First hot-wire coil is connected with the first relay switch, second hot-wire coil is connected with the second relay switch, 3rd hot-wire coil is connected with the 3rd relay switch, single-chip microcomputer is used for being monitored each road phases line voltage, and customer charge is switched on load most light phase line, the autobalance to three-phase load, quick cut is realized, while also reducing the transformer burnout failure because mutually causing partially.
Description
Technical field
The utility model belongs to low voltage power transmission technical field, more particularly to a kind of AC three-phase load automatic-balancing system.
Background technology
Three-phrase burden balance is to the stabilization of power grids and the safe operation of power equipment, line loss and living standard of urban and rural population electricity consumption
All have a direct impact.With rapid development of economy, urban and rural residents buy substantial amounts of household electrical appliance and single-phase electric machinery.Make
Into the irregular surge of single-phase load, three-phase voltage, electric current serious unbalance, manually adjust and be clearly difficult to.
Particularly in rural area, the extension of rural power grids is weak, and single-phase load property is more uncontrollable, and three-phase imbalance is particularly acute, agriculture
Administer difficult than relatively decentralized net platform region.Three-phase imbalance has the disadvantage that：
(1) distribution transformer and line loss increase；
(2) in power distribution station, the supply voltage quality of heavily loaded phase is greatly reduced；
(3) reduction of exerting oneself of distribution transformer, energy conversion efficiency decline；
(4) three-phase load unbalance operation can cause distribution transformer zero-sequence current to increase, and the eddy-current loss for causing makes to match somebody with somebody
Piezoelectric transformer running temperature is raised, and jeopardizes equipment safety when serious, shortens equipment life.
At present, for three-phase load unbalance problem, power supply department is mainly adopted strengthens load management, by manually adjusting
Load in each for low-voltage circuit phase is balanced distribution by load phase sequence.Although power distribution station can be reduced to a certain extent
The order of severity of three-phase load unbalance, but the randomness and uncertainty due to power load, by manually cannot be according to reality
The load unbalanced situation in border is adjusted in time, is inevitably affected customer power supply reliability, and be there is potential safety hazard.
Utility model content
The purpose of this utility model be to provide a kind of carry out autobalance to three-phase load, quick cut, while also drop
The low AC three-phase load automatic-balancing system of transformer burnout failure because mutually causing partially.
The utility model is achieved in that a kind of AC three-phase load automatic-balancing system, the AC three-phase load
Automatic-balancing system includes being accessed the A phase sampler circuits of A phase lines, being passed through the second access point access B phase lines by the first access point
B phase samplers circuit and by the 3rd access point access C phase lines C phase sampler circuits；
The output end of the A phase samplers circuit, B phase samplers circuit and C phase sampler circuits is all connected with signal conversion and rectification
Circuit, the signal conversion and rectification circuit connection carry out voltage monitoring respectively and are used for controlling to A phase lines, B phase lines and C phase lines
The single-chip microcomputer of switching phase line, the single-chip microcomputer connect relay assembly circuit, and the relay assembly circuit includes the first relay
Device switch, the second relay switch and the 3rd relay switch；
The AC three-phase load automatic-balancing system also includes first contactor, second contactor and the 3rd contactor,
The first contactor includes the first contact-making switch and the first hot-wire coil, the second contactor include the second contact-making switch and
Second hot-wire coil, the 3rd contactor include the 3rd contact-making switch and the 3rd hot-wire coil；
First contact-making switch is mounted in the A phase lines in the first access point downstream, and described second connects
Tactile switch is mounted in the B phase lines in the second access point downstream, and the 3rd contact-making switch is mounted on institute
State in the C phase lines in the 3rd access point downstream；
First hot-wire coil is connected with first relay switch, second hot-wire coil with described second after
Electric switch connects, and the 3rd hot-wire coil is connected with the 3rd relay switch.
As a kind of improved plan, first relay switch, the second relay switch and the 3rd relay switch
It is single-pole double-throw switch (SPDT).
Used as a kind of improved plan, the relay assembly circuit includes relay interlocking control circuit.
As a kind of improved plan, the relay interlocking control circuit include power access end, the first wiring section,
Two wiring sections and the 3rd wiring section；
Described first wiring section one end is connected with first hot-wire coil, and the other end is provided with the first contact；
Described second wiring section one end is connected with second hot-wire coil, and the other end is provided with the second contact；
Described 3rd wiring section one end is connected with the 3rd hot-wire coil, and the other end is provided with the 3rd contact；
The 4th wiring section, the 4th wiring is provided between first relay switch and second relay switch
One end of section is connected with the stationary contact of first relay switch, and the other end is provided with the 4th contact；
The 5th wiring section is provided between second relay switch and the 3rd relay switch, the 5th wiring
One end of section is connected with the stationary contact of second relay, and the other end is provided with the 5th contact, second relay switch
Movable contact is fastened on the 4th contact or the second contact；
The stationary contact of the 3rd relay switch is connected with the power access end, the 3rd relay switch dynamic
Contact is fastened on the 5th contact or the 3rd contact.
Used as a kind of improved plan, first contact is the normally-closed contact of first relay switch, described
Two contacts are the normally opened contact of second relay, and the 4th contact is the normally-closed contact of second relay, described
3rd contact is the normally opened contact of the 3rd relay switch, and the 5th contact is the normally closed of the 3rd relay switch
Contact.
Used as a kind of improved plan, the AC three-phase load automatic-balancing system also includes contactor interlocking control electricity
Road.
As a kind of improved plan, the contactor interlocking control circuit include being connected between phase line and the neutral conductor and
First via interlock circuit parallel with one another, No. second interlock circuit and No. threeth interlock circuit.
Used as a kind of improved plan, the first contactor, second contactor and the 3rd contactor also include first
Auxiliary contactor switch and the second auxiliary contactor switch；
The first relay switch that the first via interlock circuit includes being sequentially connected in series between the phase line and the neutral conductor,
First auxiliary contactor switch of second contactor, the first auxiliary contactor switch of the 3rd contactor and the first hot-wire coil；
The second relay switch that No. second interlock circuit includes being sequentially connected in series between the phase line and the neutral conductor,
First auxiliary contactor switch of first contactor, the second auxiliary contactor switch of the 3rd contactor and the second hot-wire coil；
The 3rd relay switch that No. threeth interlock circuit includes being sequentially connected in series between the phase line and the neutral conductor,
Second auxiliary contactor switch of first contactor, the second auxiliary contactor switch of second contactor and the 3rd hot-wire coil.
In the utility model embodiment, AC three-phase load automatic-balancing system includes A phase sampler circuits, B phase samplers
Circuit, C phase sampler circuits, signal conversion and rectification circuit, single-chip microcomputer, relay assembly circuit and first contactor, second
Contactor and the 3rd contactor；Signal conversion and rectification circuit connection single-chip microcomputer, single-chip microcomputer connection relay assembly circuit, first
Contactor includes that the first contact-making switch and the first hot-wire coil, second contactor include the second contact-making switch and the second live wire
Circle, the 3rd contactor include the 3rd contact-making switch and the 3rd hot-wire coil；First hot-wire coil is connected with the first relay switch,
Second hot-wire coil is connected with the second relay switch, and the 3rd hot-wire coil is connected with the 3rd relay switch, and single-chip microcomputer is used for
Each road phases line voltage is monitored, and customer charge is switched in the most light phase line of load, realize to three-phase load from
Dynamic balancing, quick cut, while also reduce the transformer burnout failure because mutually causing partially.
Due to the setting of relay interlocking control circuit and contactor interlocking control circuit, whole AC three-phase load is made certainly
The quick cut of dynamic balance system safety and steady, it is to avoid the security incident that phase short-circuit between conductors is caused.
Description of the drawings
Fig. 1 is the structural representation of the AC three-phase load automatic-balancing system that the utility model is provided；
Fig. 2 is the structural representation of the relay interlocking control circuit that the utility model is provided；
Fig. 3 is the structural representation of the contactor interlocking control circuit that the utility model is provided；
Wherein, the first access points of 1-, the second access points of 2-, the 3rd access points of 3-, 4-A phase sampler circuits, 5-B phase samplers electricity
Road, 6-C phase sampler circuits, the conversion of 7- signals and rectification circuit, 8- single-chip microcomputers, 9- relay assembly circuits, the first relays of 10-
Switch, the second relay switches of 11-, the 3rd relay switches of 12-, the first contact-making switches of 13-, the first hot-wire coils of 14-, 15-
Second contact-making switch, the second hot-wire coils of 16-, the 3rd contact-making switches of 17-, the 3rd hot-wire coils of 18-, 19- power access ends,
20- the first wiring sections, 21- the second wiring sections, the 3rd wiring sections of 22-, the first contacts of 23-, the second contacts of 24-, 25- the 3rd are touched
Point, the 4th wiring sections of 26-, the 4th contacts of 27-, the 5th wiring sections of 28-, the 5th contacts of 29-, 30- first via interlock circuits, 31-
No. second interlock circuit, 32- No. threeth interlock circuits, the first auxiliary contactor switch of 33- first contactors, 34- first are contacted
Second auxiliary contactor switch of device, the first auxiliary contactor switch of 35- second contactors, the second auxiliary of 36- second contactors
Contact-making switch, the first auxiliary contactor switch of the 3rd contactors of 37-, the second auxiliary contactor switch of the 3rd contactors of 38-.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only in order to explaining
The utility model, is not used to limit the utility model.
Fig. 1 shows the structural representation of the AC three-phase load automatic-balancing system that the utility model is provided, in order to just
The part related to the utility model is only gived in explanation, figure.
AC three-phase load automatic-balancing system includes being accessed the A phase samplers circuit 4 of A phase lines, being led to by the first access point 1
Cross the second access point 2 to access the B phase samplers circuit 5 of B phase lines and access the C phase samplers circuit 6 of C phase lines by the 3rd access point 3；
The output end of A phase samplers circuit 4, B phase samplers circuit 5 and C phase samplers circuit 6 is all connected with signal conversion and rectified current
Road 7, signal conversion and rectification circuit 7 connect carries out voltage monitoring respectively and for control switching to A phase lines, B phase lines and C phase lines
The single-chip microcomputer 8 of phase line, the connection of single-chip microcomputer 8 relay assembly circuit 9, relay assembly circuit 9 include the first relay switch 10,
Second relay switch 11 and the 3rd relay switch 12；
AC three-phase load automatic-balancing system also includes first contactor, second contactor and the 3rd contactor, first
Contactor includes that the first contact-making switch 13 and the first hot-wire coil 14, second contactor include that the second contact-making switch 15 and second is logical
Electric coil 16, the 3rd contactor include the 3rd contact-making switch 17 and the 3rd hot-wire coil 18；
First contact-making switch 13 is mounted in the A phase lines in 1 downstream of the first access point, and the second contact-making switch 15 is arranged on
It is located in the B phase lines in the second access point downstream, the 3rd contact-making switch 17 is mounted in the C phase lines in the 3rd access point downstream；
First hot-wire coil 14 is connected with the first relay switch 10, the second hot-wire coil 16 and the second relay switch 11
Connection, the 3rd hot-wire coil 18 are connected with the 3rd relay switch 12.
Wherein, above-mentioned A phase samplers circuit 4, B phase samplers circuit 5 and C phase samplers circuit 6 are constituted by transformer, and which is main
For being acquired to the voltage in corresponding phase line, and send the voltage for collecting to signal conversion and rectification circuit 7, then
Transfer to single-chip microcomputer 8 to carry out real-time monitoring again, continue to monitor a period of time, and the magnitude of voltage to this each phase line of a period of time of past
Calculated, and control the use phase line of electrical equipment is switched in the most light phase line of load, for the connection of transformer is tied
Structure, will not be described here.
It is for a period of time 24 hours that this continues to monitor, the state that can typically embody power load in phase line in 24 hours.
In this embodiment, the first relay switch 10, the second relay switch 11 and the 3rd relay switch 12 are
Single-pole double-throw switch (SPDT), makes whole circuit structure simple, handling strong.
In the utility model embodiment, in above-mentioned relay assembly circuit 9, also include relay interlocking control circuit,
The relay interlocking control circuit is used for the security to ensureing cut, i.e., before power load to be switched to next phase line,
Circuitry cuts state is guaranteed in two other phase line.
Wherein, as shown in Fig. 2 above-mentioned relay interlocking controller circuit include power access end 19, the first wiring section 20,
Second wiring section 21 and the 3rd wiring section 22；
First wiring section, 20 one end is connected with the first hot-wire coil 14, and the other end is provided with the first contact 23；
Second wiring section, 21 one end is connected with the second hot-wire coil 16, and the other end is provided with the second contact 24；
3rd wiring section, 22 one end is connected with the 3rd hot-wire coil 18, and the other end is provided with the 3rd contact 25；
The 4th wiring section 26 is provided between first relay switch 10 and the second relay switch 11, the 4th wiring section 26
One end is connected with the stationary contact of the first relay switch 10, and the other end is provided with the 4th contact 27；
The 5th wiring section 28 is provided between second relay switch 11 and the 3rd relay switch 12, the 5th wiring section 28
One end is connected with the stationary contact of the second relay, and the other end is provided with the 5th contact 29, the movable contact button of the second relay switch 11
Close on the 4th contact 27 or the second contact 24；
The stationary contact of the 3rd relay switch 12 is connected with power access end 19, the movable contact button of the 3rd relay switch 12
Close on the 5th contact 29 or the 3rd contact 25.
In this embodiment, as shown in Fig. 2 the first contact 23 is the normally-closed contact of the first relay switch 10, second touches
Normally opened contact of the point 24 for the second relay, normally-closed contact of the 4th contact 27 for the second relay, the 3rd contact 25 is the 3rd
The normally opened contact of relay switch 12, normally-closed contact of the 5th contact 29 for the 3rd relay switch 12.
In the utility model embodiment, AC three-phase load automatic-balancing system also includes contactor interlocking control electricity
Road, the contactor interlocking control circuit be used for ensure cut security, i.e., by power load be switched to next phase line it
Before, circuitry cuts state is guaranteed in two other phase line, i.e., regardless of the state of relay switch, cut all in circuit
Disconnected state.
As shown in figure 3, contactor interlocking control circuit includes being connected between phase line and the neutral conductor and parallel with one another
Interlock circuit 30, No. second interlock circuit 31 and No. threeth interlock circuit 32 all the way；
Wherein, first contactor, second contactor and the 3rd contactor also include the first auxiliary contactor switch and second
Auxiliary contactor switch；
First via interlock circuit 30 includes the first relay switch 10, second being sequentially connected in series between phase line and the neutral conductor
First auxiliary contactor switch 35 of contactor, the first auxiliary contactor switch 37 of the 3rd contactor and the first hot-wire coil 14；
No. second interlock circuit 31 includes the second relay switch 11, first being sequentially connected in series between phase line and the neutral conductor
First auxiliary contactor switch 33 of contactor, the second auxiliary contactor switch 38 of the 3rd contactor and the second hot-wire coil 16；
No. threeth interlock circuit 32 includes the 3rd relay switch 12, first being sequentially connected in series between phase line and the neutral conductor
Second auxiliary contactor switch 36 and the 3rd hot-wire coil 18 of the second auxiliary contactor switch 34, second contactor of contactor.
For convenience of description, the operation principle of contactor interlocking control circuit is illustrated in conjunction with Fig. 3：
Current power load is assumed on first via interlock circuit 30, through the monitoring that single-chip microcomputer 8 continues 24 hours, judge phase
Line B is the most light phase line of load in three-phase, accordingly, it would be desirable to control power load is switched in phase line B, now, single-chip microcomputer 8 is given
First relay switch sends open command, sends close command to the second relay switch；
First relay switch disconnects, and the second relay switch is closed, while the first auxiliary for controlling second contactor connects
Touch switch, the second auxiliary contactor switch and be in off-state, and the first auxiliary contactor switch the 33, the 3rd of first contactor connects
Second auxiliary contactor switch of tentaculum is in closure state, and now, No. second interlock circuit is in "on" position；
Electricity on second hot-wire coil 16 of second contactor, the second contact-making switch of adhesive 15 close, power load are switched
To in phase line B.
In the utility model embodiment, AC three-phase load automatic-balancing system includes A phase samplers circuit 4, B phase samplers
Circuit 5, the conversion of C phase samplers circuit 6, signal and rectification circuit 7, single-chip microcomputer 8, relay assembly circuit 9 and first contactor,
Second contactor and the 3rd contactor；Signal conversion and rectification circuit 7 connect single-chip microcomputer 8, the connection relay assembly electricity of single-chip microcomputer 8
Road 9, first contactor include that the first contact-making switch 13 and the first hot-wire coil 14, second contactor include the second contact-making switch 15
With the second hot-wire coil 16, the 3rd contactor includes the 3rd contact-making switch 17 and the 3rd hot-wire coil 18；First hot-wire coil 14
Be connected with the first relay switch 10, the second hot-wire coil 16 is connected with the second relay switch 11, the 3rd hot-wire coil 18 with
3rd relay switch 12 connects, and single-chip microcomputer 8 is used for being monitored each road phases line voltage, and customer charge is switched to load
In most light phase line, the autobalance to three-phase load, quick cut is realized, while also reducing burning because of the transformer for mutually causing partially
Ruin accident.
Preferred embodiment of the present utility model is these are only, not in order to limit the utility model, all in this practicality
Any modification, equivalent and improvement for being made within new spirit and principle etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (8)
1. a kind of AC three-phase load automatic-balancing system, it is characterised in that the AC three-phase load automatic-balancing system bag
Include by the first access point access A phase lines A phase sampler circuits, by the second access point access B phase lines B phase samplers circuit and
The C phase sampler circuits that C phase lines are accessed by the 3rd access point；
The output end of the A phase samplers circuit, B phase samplers circuit and C phase sampler circuits is all connected with signal conversion and rectification circuit,
The signal conversion and rectification circuit connection carry out voltage monitoring respectively and for control switching to A phase lines, B phase lines and C phase lines
The single-chip microcomputer of phase line, the single-chip microcomputer connect relay assembly circuit, and the relay assembly circuit includes that the first relay is opened
Pass, the second relay switch and the 3rd relay switch；
The AC three-phase load automatic-balancing system also includes first contactor, second contactor and the 3rd contactor, described
First contactor includes that the first contact-making switch and the first hot-wire coil, the second contactor include the second contact-making switch and second
Hot-wire coil, the 3rd contactor include the 3rd contact-making switch and the 3rd hot-wire coil；
First contact-making switch is mounted in the A phase lines in the first access point downstream, and second contact is opened
Close and be mounted in the B phase lines in the second access point downstream, the 3rd contact-making switch is mounted on described the
In the C phase lines in three access point downstreams；
First hot-wire coil is connected with first relay switch, second hot-wire coil and second relay
Switch connection, the 3rd hot-wire coil are connected with the 3rd relay switch.
2. AC three-phase load automatic-balancing system according to claim 1, it is characterised in that first relay is opened
Close, the second relay switch and the 3rd relay switch are single-pole double-throw switch (SPDT).
3. AC three-phase load automatic-balancing system according to claim 2, it is characterised in that the relay assembly electricity
Road includes relay interlocking control circuit.
4. AC three-phase load automatic-balancing system according to claim 3, it is characterised in that the mutual lock control of the relay
Circuit processed includes power access end, the first wiring section, the second wiring section and the 3rd wiring section；
Described first wiring section one end is connected with first hot-wire coil, and the other end is provided with the first contact；
Described second wiring section one end is connected with second hot-wire coil, and the other end is provided with the second contact；
Described 3rd wiring section one end is connected with the 3rd hot-wire coil, and the other end is provided with the 3rd contact；
The 4th wiring section is provided between first relay switch and second relay switch, the 4th wiring section
One end is connected with the stationary contact of first relay switch, and the other end is provided with the 4th contact；
The 5th wiring section is provided between second relay switch and the 3rd relay switch, the 5th wiring section
One end is connected with the stationary contact of second relay, and the other end is provided with the 5th contact, and the dynamic of second relay switch touches
Point is fastened on the 4th contact or the second contact；
The stationary contact of the 3rd relay switch is connected with the power access end, the movable contact of the 3rd relay switch
It is fastened on the 5th contact or the 3rd contact.
5. AC three-phase load automatic-balancing system according to claim 4, it is characterised in that first contact is institute
The normally-closed contact of the first relay switch is stated, second contact is the normally opened contact of second relay, and the described 4th touches
Normally-closed contact of the point for second relay, the 3rd contact is the normally opened contact of the 3rd relay switch, described
5th contact is the normally-closed contact of the 3rd relay switch.
6. AC three-phase load automatic-balancing system according to claim 1, it is characterised in that the AC three-phase load
Automatic-balancing system also includes contactor interlocking control circuit.
7. AC three-phase load automatic-balancing system according to claim 6, it is characterised in that the contactor interlocking control
Circuit processed includes being connected between phase line and the neutral conductor and first via interlock circuit parallel with one another, No. second interlock circuit and
No. three interlock circuits.
8. AC three-phase load automatic-balancing system according to claim 7, it is characterised in that the first contactor,
Second contactor and the 3rd contactor also include the first auxiliary contactor switch and the second auxiliary contactor switch；
The first relay switch that the first via interlock circuit includes being sequentially connected in series between the phase line and the neutral conductor, second
First auxiliary contactor switch of contactor, the first auxiliary contactor switch of the 3rd contactor and the first hot-wire coil；
The second relay switch that No. second interlock circuit includes being sequentially connected in series between the phase line and the neutral conductor, first
First auxiliary contactor switch of contactor, the second auxiliary contactor switch of the 3rd contactor and the second hot-wire coil；
The 3rd relay switch that No. threeth interlock circuit includes being sequentially connected in series between the phase line and the neutral conductor, first
Second auxiliary contactor switch of contactor, the second auxiliary contactor switch of second contactor and the 3rd hot-wire coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620936532.0U CN206023235U (en) | 2016-08-25 | 2016-08-25 | A kind of AC three-phase load automatic-balancing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620936532.0U CN206023235U (en) | 2016-08-25 | 2016-08-25 | A kind of AC three-phase load automatic-balancing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206023235U true CN206023235U (en) | 2017-03-15 |
Family
ID=58251622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620936532.0U Withdrawn - After Issue CN206023235U (en) | 2016-08-25 | 2016-08-25 | A kind of AC three-phase load automatic-balancing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206023235U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130046A (en) * | 2016-08-25 | 2016-11-16 | 李建新 | A kind of AC three-phase load automatic-balancing system |
-
2016
- 2016-08-25 CN CN201620936532.0U patent/CN206023235U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130046A (en) * | 2016-08-25 | 2016-11-16 | 李建新 | A kind of AC three-phase load automatic-balancing system |
| CN106130046B (en) * | 2016-08-25 | 2018-08-14 | 李建新 | A kind of AC three-phase load automatic-balancing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170315 Effective date of abandoning: 20180814 |