CN206894250U - A kind of strong and weak electricity isolating device - Google Patents
A kind of strong and weak electricity isolating device Download PDFInfo
- Publication number
- CN206894250U CN206894250U CN201720770752.5U CN201720770752U CN206894250U CN 206894250 U CN206894250 U CN 206894250U CN 201720770752 U CN201720770752 U CN 201720770752U CN 206894250 U CN206894250 U CN 206894250U
- Authority
- CN
- China
- Prior art keywords
- strong
- switch board
- control circuit
- weak
- isolating device
- 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.)
- Expired - Fee Related
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Classifications
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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
- Y02E40/30—Reactive power compensation
-
- 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
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The utility model belongs to electrical equipment manufacturing technology field, disclose a kind of strong and weak electricity isolating device, it is provided with switch board, the switch board is provided with three layers, the upper strata of the switch board is placed with strong electrical control circuit, the intermediate layer of the switch board is placed with isolating transformer, and the lower floor of the switch board is placed with weak control circuit；The strong electrical control circuit is electrically connected by the isolating transformer with the weak control circuit.The isolating transformer winding of the strong and weak electricity isolating device itself has very big shunt capacitance capacity, can compensate for power system reactive power.Strong and weak electricity isolating device antijamming capability is enhanced, the effect for preferably suppressing each harmonic had both been obtained, overvoltage, overcurrent phenomenon that resonance and usual capacitor are likely to occur will not occur again.
Description
Technical field
The utility model belongs to electrical equipment manufacturing technology field, more particularly to a kind of strong and weak electricity isolating device.
Background technology
At present, existing strong and weak electric installation, including the two-way signaling transmission light being connected on the data wire of I2C universal serial bus
Unidirectional signal transfer optical coupling isolation circuit in coupling isolation circuit and the clock line being connected on；Two-way signaling optical coupling isolation circuit and list
Optocoupler into signal optical coupling isolation circuit connects power supply by pull-up resistor；The both ends of I2C universal serial bus connect by force respectively
Electric partial circuit and weak current part circuit is to realize the communication between strong power part and weak current part.Due to serially total by I2C
The clock signal and strong and weak electricity isolation signals of this strong and weak electricity isolating device of line are carried out by data wire and clock line respectively
Transmission, not only need to increase an optical coupling isolation circuit so as to increase the cost of whole strong and weak electricity isolating device, but also make
It is extremely complex to obtain whole circuit, so that circuit is easier to be disturbed.
The transformer inserted on the circuit board that some two-sided SMD of in the market and THD are loaded in mixture, transformer lead pin pad it
Between spacing be 1mm, but it is 400V and 24V to have the operating voltage between two pins, and both anaplasias have jump electrical phenomena
The problem of.
In summary, the problem of prior art is present be：Existing strong and weak electric installation increase an optical coupling isolation circuit from
And increase the cost of whole strong and weak electricity isolating device, so that whole circuit is extremely complex, so that circuit is easier
It is disturbed；The mixed circuit of transformer is installed, the problem of jumping electrical phenomena be present.
The content of the invention
The problem of existing for prior art, the utility model provide a kind of strong and weak electricity isolating device.
The utility model is achieved in that a kind of strong and weak electricity isolating device is provided with switch board, and the switch board is set
There are three layers, the upper strata of the switch board is placed with strong electrical control circuit, and the intermediate layer of the switch board is placed with isolating transformer,
The lower floor of the switch board is placed with weak control circuit；
The strong electrical control circuit is electrically connected by the isolating transformer with the weak control circuit.
Further, the isolating transformer uses three-phase double-winding structure, and the former secondary of isolating transformer is each around component
Into two coils, two coils are wrapped up by the metal foil of two layers of mutual insulating.
Further, the winding that two coil is connected on three-phase four-wire system side is preferably connected into Z-connection, two coil
The winding for being connected on three-phase three-line system side is preferably connected into hexagon connection.
Further, the spacing between the pin pad of the isolating transformer is 0.8mm, width 1mm.
The advantages of the utility model and good effect are：The isolating transformer winding of the strong and weak electricity isolating device has itself
Very big shunt capacitance capacity, can compensate for power system reactive power.Strong and weak electricity isolating device antijamming capability is enhanced, was both obtained
Preferably suppress the effect of each harmonic, overvoltage, overcurrent that resonance and usual capacitor are likely to occur will not occur again
Phenomenon.
Brief description of the drawings
Fig. 1 is the structural representation for the strong and weak electricity isolating device that the utility model embodiment provides；
Fig. 2 is the schematic diagram for the strong electrical control circuit that the utility model embodiment provides；
Fig. 3 is the schematic diagram for the weak control circuit that the utility model embodiment provides；
Fig. 4 is the schematic diagram for the isolating transformer that the utility model embodiment provides.
In figure：1st, strong electrical control circuit；2nd, isolating transformer；3rd, weak control circuit；4th, switch board.
Embodiment
For invention, features and effects of the present utility model can be further appreciated that, following examples are hereby enumerated, and coordinate
Accompanying drawing describes in detail as follows.
Strong and weak electricity isolating device is provided with switch board 4, and the switch board 4 is provided with three layers, and the upper strata of the switch board 4 is put
Strong electrical control circuit 1 is equipped with, the intermediate layer of the switch board 4 is placed with isolating transformer 2, and the lower floor of the switch board 4 places
There is weak control circuit 3；
The strong electrical control circuit 1 is electrically connected by the isolating transformer 2 with the weak control circuit 3.
The isolating transformer 2 uses three-phase double-winding structure, and each winding of former secondary of isolating transformer 2 is divided into two
Coil, two coils are wrapped up by the metal foil of two layers of mutual insulating.
The winding that two coil is connected on three-phase four-wire system side is preferably connected into Z-connection, and two coil is connected on three
The winding of three-phase three-wire system system side is preferably connected into hexagon connection.
Spacing between the pin pad of the isolating transformer 2 is 0.8mm, and " hollow out " design has been done between two pins；
Width is 1mm, with silica gel on time point, does three-proofing coating spraying.
Strong electrical control circuit 1 is realized by isolating transformer 2 successfully isolates with weak control circuit 3.Isolate transformation
Device 2 uses three-phase double-winding structure, and the former each winding of secondary is divided into two coils, two coils, two layers of mutual insulating
Metal foil is simultaneously wound up.Then electric capacity C (so-called capacitive isolating transformer) is there is between two coil.Then can be according to need
Following two modes of connection are taken to be combined：The winding for being connected on three-phase four-wire system side is preferably connected into Z-connection, is connected on
The winding of three-phase three-line system side is preferably connected into hexagon connection.There is isolating transformer 2 itself very big shunt capacitance to hold
Amount, can compensate for power system reactive power.Enhance strong and weak electricity isolating device antijamming capability, both obtained preferably suppress each time it is humorous
The effect of ripple, overvoltage, overcurrent phenomenon that resonance and usual capacitor are likely to occur will not occur again.
Described above is only to preferred embodiment of the present utility model, not the utility model is made any formal
Limitation, it is every according to the technical essence of the utility model to any simple modification made for any of the above embodiments, equivalent variations with
Modification, is belonged in the range of technical solutions of the utility model.
Claims (4)
1. a kind of strong and weak electricity isolating device, it is characterised in that the strong and weak electricity isolating device is provided with switch board, the switch board
Three layers are provided with, the upper strata of the switch board is placed with strong electrical control circuit, and the intermediate layer of the switch board is placed with isolation and become
Depressor, the lower floor of the switch board are placed with weak control circuit；
The strong electrical control circuit is electrically connected by the isolating transformer with the weak control circuit.
2. strong and weak electricity isolating device as claimed in claim 1, it is characterised in that the isolating transformer uses three-phase double winding knot
Structure, each winding of former secondary of isolating transformer are divided into two coils, the metal foil bag that two coils pass through two layers of mutual insulating
Wrap up in.
3. strong and weak electricity isolating device as claimed in claim 2, it is characterised in that two coil is connected on three-phase four-wire system one
The winding of side is preferably connected into Z-connection, and the winding that two coil is connected on three-phase three-line system side is preferably connected into hexagon connection.
4. strong and weak electricity isolating device as claimed in claim 1, it is characterised in that between the pin pad of the isolating transformer
Spacing is 0.8mm, width 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720770752.5U CN206894250U (en) | 2017-06-29 | 2017-06-29 | A kind of strong and weak electricity isolating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720770752.5U CN206894250U (en) | 2017-06-29 | 2017-06-29 | A kind of strong and weak electricity isolating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206894250U true CN206894250U (en) | 2018-01-16 |
Family
ID=61298805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720770752.5U Expired - Fee Related CN206894250U (en) | 2017-06-29 | 2017-06-29 | A kind of strong and weak electricity isolating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206894250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233586A (en) * | 2019-06-24 | 2019-09-13 | 上海威派格智慧水务股份有限公司 | A kind of control circuit and control device that power is electrically separated |
-
2017
- 2017-06-29 CN CN201720770752.5U patent/CN206894250U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233586A (en) * | 2019-06-24 | 2019-09-13 | 上海威派格智慧水务股份有限公司 | A kind of control circuit and control device that power is electrically separated |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 Termination date: 20200629 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |