CN208539574U - A kind of three-phase imbalance regulating system phase-change switch - Google Patents
A kind of three-phase imbalance regulating system phase-change switch Download PDFInfo
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- CN208539574U CN208539574U CN201821141882.3U CN201821141882U CN208539574U CN 208539574 U CN208539574 U CN 208539574U CN 201821141882 U CN201821141882 U CN 201821141882U CN 208539574 U CN208539574 U CN 208539574U
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- change switch
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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
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Abstract
The utility model relates to field of electrical equipment, especially a kind of three-phase imbalance regulating system phase-change switch, control panel inside phase-change switch is set including one, control panel is connected through conducting wire with accessory power supply, level-one relay, second level relay and output relay are equipped in phase-change switch, level-one relay, second level relay, output relay are connected through conducting wire with the signal feedback port on control panel respectively；Level-one relay and second level relay are both-end relay, and the input terminal of level-one relay is respectively connected to A phase electricity and B phase electricity.The utility model structure is simple, design is reasonable, relay in phase-change switch can be to control panel feedback signal, the contact position of relay is fed back into control panel, control panel judges whether relay switching action acts successfully in place, by the mechanical latching of cascade relay inside phase-change switch, the generation of phase fault is effectively avoided, accident rate is reduced.
Description
Technical field:
The utility model relates to field of electrical equipment, especially a kind of three-phase imbalance regulating system phase-change switch.
Background technique:
In China's urban and rural power grids, three-phase four-wire system distribution system is largely used, since there are many single-phase loads, electricity consumption
The reasons such as asynchronism, thus it is inevitable when the three-phase imbalance operation of distribution transformer, it is directed to three-phase imbalance at present
Problem mostly uses greatly three-phase imbalance regulating system, wherein carrying out intelligence by the way of the multiple phase-change switches of main controller controls
Commutation, but existing phase-change switch internal control plate issue switching command by driving relay switching after, switching whether succeed
There is no the control panel that feedback signal passes phase-change switch back, control panel can not determine whether relay switches successfully, and at present
Phase-change switch internal execution units use three single-ended relays in the market, and relay contact when commutation switches in original access holds
Easily it is adhered inseparable, the switching of other relays of main controller controls be easy to cause phase fault after being powered, and causes accident.
Utility model content:
The utility model provides a kind of three-phase imbalance regulating system phase-change switch, its structure is simple, and design is reasonable,
The contact position of relay can be fed back to control panel, control panel to control panel feedback signal by the relay in phase-change switch
Judge whether relay switching action acts successfully in place, by the mechanical latching of cascade relay inside phase-change switch, effectively
The generation for avoiding phase fault, reduce accident rate.Solve problems of the prior art.
Used technical solution is the utility model to solve above-mentioned technical problem: a kind of three-phase imbalance regulating system
With phase-change switch, control panel inside phase-change switch is set including one, control panel is connected through conducting wire with accessory power supply, in commutation
Level-one relay, second level relay and output relay, level-one relay, second level relay, output relay are equipped in switch
It is connected respectively through conducting wire with the signal feedback port on control panel；Level-one relay and second level relay are both-end relay, one
The input terminal of grade relay is respectively connected to that A phase electricity is electric with B phase, the output end of level-one relay and second level relay one of them
Input terminal is connected, and another input terminal of second level relay access C phase is electric, the output end of second level relay and output relay
Input terminal is connected, the output end output single-phase electricity of output relay.
Preferably, there are three the signal feedback port on the control panel is set, level-one relay, second level relay, output
Relay is connected through conducting wire from different signal feedback ports respectively.
Preferably, A, B, C three-phase contact and N phase zero curve contact, auxiliary electricity are equipped on the power input of accessory power supply
Tetra- contacts A, B, C, N on the input terminal of source respectively through on the input terminal on conducting wire and phase-change switch three phase mains interface,
Zero line interface is corresponding to be connected.
Preferably, the level-one relay, second level relay and output relay use HFE12 relay.
Preferably, the accessory power supply uses LD20-26B12 power module.
The beneficial effect of the utility model using the above structure is that structure is simple, and design is reasonable, the relay in phase-change switch
The contact position of relay can be fed back to control panel, control panel judges that relay switching is dynamic to control panel feedback signal by device
Whether act successfully in place, by the mechanical latching of cascade relay inside phase-change switch, effectively avoids phase fault
Generation, reduce accident rate.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the electrical schematic diagram of the relay part of the utility model.
In figure, 1, control panel；2, accessory power supply；3, level-one relay；4, second level relay；5, output relay；6, believe
Number feedback port.
Specific embodiment:
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this reality
It is described in detail with novel.
As shown in Figs. 1-2, a kind of three-phase imbalance regulating system phase-change switch, including a setting is inside phase-change switch
Control panel 1, control panel 1 is connected through conducting wire with accessory power supply 2, and level-one relay 3, second level relay are equipped in phase-change switch
4 with output relay 5, level-one relay 3, second level relay 4, output relay 5 are respectively through the signal on conducting wire and control panel 1
Feedback port 6 is connected；Level-one relay 3 and second level relay 4 are both-end relay, and the input terminal of level-one relay 3 connects respectively
Enter A phase electricity and B phase electricity, the output end of level-one relay 3 is connected with one of input terminal of second level relay 4, second level relay
Another input terminal access C phase electricity of device 4, the output end of second level relay 4 are connected with the input terminal of output relay 5, export
The output end output single-phase electricity of relay 5.
There are three signal feedback port 6 on the control panel 1 is set, level-one relay 3, second level relay 4, output relay
Device 5 is connected through conducting wire from different signal feedback ports 6 respectively.
A, B, C three-phase contact and N phase zero curve contact are equipped on the power input of accessory power supply 2, accessory power supply 2 inputs
Tetra- contacts A, B, C, N on end connect through conducting wire and three phase mains interface, the zero curve on the input terminal on phase-change switch respectively
Mouth is corresponding to be connected.Power supply used in phase-change switch all generallys use A phase and zero curve and powers currently on the market, if the power down of A phase or
Zero curve disconnects, and then power down cannot work phase-change switch, A, B, C three phase mains in this programme on accessory power supply 2 and input terminal
It is connected, can be avoided the case where accessory power supply after wherein A phase power down can not power.The power supply of phase-change switch using A, B, C,
N three-phase and four-line power supply plan guarantees power supply power supply reliability, as long as any one phase normally has electricity it is ensured that normal in A, B, C
Power supply, prevents phase-change switch power down,
The level-one relay 3, second level relay 4 and output relay 5 use HFE12 relay.
The accessory power supply 2 uses LD20-26B12 power module.LD20-26B12 power module can voluntarily default choosing
It selects A phase to power, when A phase power down, LD20-26B12 power module can automatically switch to B phase or C phase continues to power, and keep changing
The mutually normal operating conditions of switch.
In use, LD20-26B12 power module is using the three-phase and four-line on input terminal as power supply, LD20-26B12 power supply
The alternating current that input terminal enters is converted into stable DC by module, power supply is provided for control panel 1, inside phase-change switch
Level-one relay 3, second level relay 4 and output relay 5 contact change-over after, be connected to level-one relay 3, second level relay
Switching signal is transferred to corresponding signal feedback port on control panel 1 with the conducting wire on normally opened contact in output relay 5 by device 4
6, control panel 1 judges whether relay contact switching action succeeds according to 6 received signal of signal feedback port.In phase-change switch
Portion is mechanical interlocked using two both-end relays realizations, and two both-end relays divide two-stage cascade, and level-one relay 3 selects A, B
A phase in phase, is then output to one end of second level relay 4, another termination C phase of second level relay 4, and second level relay 4 selects
A, B or C three-phase electricity, then exports a wherein phase, and two both-end relay contacts of this two-stage cascade are all that can only close with one end
It closes, disconnected with the other end, realize mechanical latching, finally by output relay 5 by one of them suitable single-phase electricity output, change
Phase switch internal effectively avoids the generation of phase fault, reduces accident rate by the mechanical latching of cascade relay.
Above-mentioned specific embodiment cannot function as the limitation to scope of protection of the utility model, for the skill of the art
For art personnel, any alternate modification or transformation made to the utility model embodiment all fall within the guarantor of the utility model
It protects in range.
Place is not described in detail for the utility model, is the well-known technique of those skilled in the art of the present technique.
Claims (5)
1. a kind of three-phase imbalance regulating system phase-change switch, control panel inside phase-change switch, control are set including one
Plate is connected through conducting wire with accessory power supply, it is characterised in that: level-one relay, second level relay and output are equipped in phase-change switch
Relay, level-one relay, second level relay, output relay are respectively through conducting wire and the signal feedback port phase on control panel
Even；Level-one relay and second level relay are both-end relay, and the input terminal of level-one relay is respectively connected to A phase electricity and B phase electricity,
The output end of level-one relay is connected with one of input terminal of second level relay, another input termination of second level relay
Enter C phase electricity, the output end of second level relay is connected with the input terminal of output relay, the output end output single-phase of output relay
Electricity.
2. a kind of three-phase imbalance regulating system phase-change switch according to claim 1, it is characterised in that: the control
There are three signal feedback port on plate is set, level-one relay, second level relay, output relay respectively through conducting wire from it is different
Signal feedback port is connected.
3. a kind of three-phase imbalance regulating system phase-change switch according to claim 1 or 2, it is characterised in that: auxiliary
The power input of power supply is helped to be equipped with A, B, C three-phase contact and N phase zero curve contact, A, B, C, N on accessory power supply input terminal
Four contacts are corresponding connected through conducting wire and the three phase mains interface on the input terminal on phase-change switch, zero line interface respectively.
4. a kind of three-phase imbalance regulating system phase-change switch according to claim 1 or 2, it is characterised in that: described
Level-one relay, second level relay and output relay are HFE12 relay.
5. a kind of three-phase imbalance regulating system phase-change switch according to claim 4, it is characterised in that: the auxiliary
Power supply is LD20-26B12 power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821141882.3U CN208539574U (en) | 2018-07-18 | 2018-07-18 | A kind of three-phase imbalance regulating system phase-change switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821141882.3U CN208539574U (en) | 2018-07-18 | 2018-07-18 | A kind of three-phase imbalance regulating system phase-change switch |
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| Publication Number | Publication Date |
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| CN208539574U true CN208539574U (en) | 2019-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821141882.3U Active CN208539574U (en) | 2018-07-18 | 2018-07-18 | A kind of three-phase imbalance regulating system phase-change switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950917A (en) * | 2019-03-27 | 2019-06-28 | 山东正瑞电子有限公司 | The self balancing electric meter data collecting system of three-phase load and selection switch |
-
2018
- 2018-07-18 CN CN201821141882.3U patent/CN208539574U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109950917A (en) * | 2019-03-27 | 2019-06-28 | 山东正瑞电子有限公司 | The self balancing electric meter data collecting system of three-phase load and selection switch |
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