CN201478714U - Electrical control cabinet - Google Patents
Electrical control cabinet Download PDFInfo
- Publication number
- CN201478714U CN201478714U CN2009201855995U CN200920185599U CN201478714U CN 201478714 U CN201478714 U CN 201478714U CN 2009201855995 U CN2009201855995 U CN 2009201855995U CN 200920185599 U CN200920185599 U CN 200920185599U CN 201478714 U CN201478714 U CN 201478714U
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- CN
- China
- Prior art keywords
- electrical control
- control cubicles
- frequency converter
- weak current
- cabinet
- 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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Abstract
The utility model discloses an electrical control cabinet, which comprises a strong current portion and a weak current portion. The electrical control cabinet is characterized in that the strong current portion is separated from the weak current portion via a partition board (1), the strong current portion comprises a frequency converter brake unit (2), a filter (3) is arranged between the frequency converter brake unit and a power source, the weak current portion comprises a PLC relay (4), and the relay outputs signals to feed back status of a frequency converter. The electrical control cabinet is excellent in electromagnetic shielding performance.
Description
Technical field
The utility model belongs to the structure-design technique field of electrical control cubicles, has been specifically related to the good electrical control cubicles of a kind of Electro Magnetic Compatibility.
Background technology
(Electro Magnetic Compatibility EMC) comprises the requirement of two aspects: be meant equipment in normal course of operation on the one hand, the electromagnetic interference that the place environment is produced can not surpass certain limit value to Electro Magnetic Compatibility; Be meant that on the other hand utensil has to a certain degree antijamming capability to the electromagnetic interference that exists in the environment of place.All can there be intermittence or continuity electric current and voltage to change when all electrical equipment and electronic device works, sometimes rate of change is also quite fast, can cause like this in different frequency or between a frequency band, producing electromagnetic energy, in the environment around corresponding circuit then can be transmitted into this energy.Because often design frequency converter in the electrical control cubicles, frequency converter is that AC speed regulating has been brought convenience, but has also brought electromagnetic interference.
Produce electromagnetic interference three necessary conditions are arranged: the receiving element of interference source, transmission medium, sensitivity, realize that in the design process of electric equipment electromagnetic compatibility is exactly to destroy the condition that electromagnetic interference forms.In the work of reality, have constraint and restriction from aspects such as cost pressure, technology, can not all take measures from three aspects, at this moment, often with the total starting point of high as far as possible Electro Magnetic Compatibility efficiency-cost ratio as electromagnetic interference elimination or inhibition.The present invention comes therefrom.
Summary of the invention
The object of the invention is to provide a kind of electrical control cubicles, and it is good and produce problem such as electromagnetic interference to have solved electrical control cubicles uses frequency converter to produce in the prior art capability of electromagnetic shielding.
In order to solve these problems of the prior art, technical scheme provided by the invention is:
A kind of electrical control cubicles, comprise strong power part, weak current part, it is characterized in that being provided with between described strong power part weak current part division board isolates, described strong power part comprises the frequency converter brake unit, between described frequency converter brake unit and power supply filter is set, described weak current part comprises the PLC relay, described relay output signal feedback inverter state.
Preferably, described frequency converter is accepted terminal controller tool equipment operation, and described automatically controlled cabinet is the panel beating cabinet.
Preferably, described plant equipment is an elevator.
Preferably, described division board is the metal division board.
Preferably, on the described cabinet heat radiation through hole is set.
Preferably, the control cable of described frequency converter is a shielding conductor.
Preferably, described electrical control cubicles is the multilayer cabinet, and the heat radiation through hole is set between described cabinet.
With respect to scheme of the prior art, advantage of the present invention is:
1. strong power part and weak current part by the division board isolation design is set in the technical scheme of the present invention utilize shield to reach the purpose that weakens interfering energy to disturbing absorption of electromagnetic wave, reflection.Screening energy effectively suppresses the electromagnetic interference by spatial transmission.Adopt the purpose of shielding to have two among the present invention: the one, the radiation electric magnetic energy of limiting device inside runs off a certain zone; The 2nd, prevent that outside radiation electric magnetic energy from entering a certain zone.Strong power part of the present invention like this and weak current part can not produce electromagnetic interference.
2, between frequency converter and power supply, filter is set in the preferred technical solution of the present invention, is not subjected to influence from the interference of circuit internal unit by the interference-free influence of the electric power network in the filter protection equipment, protective circuit.Input useful signal and unwanted signal at filter are mixed in together, but output then has only useful signal, and the unwanted signal that is filtered off connects by ground and is consumed.When in rack, filter being installed, follow following policy, filter directly is installed to electric cabinet power supply input, filter will directly be fixed on the mounting panel with screw, allow the metal-plated zine plate shell of filter well contact with mounting panel, the incoming line of filter can not be put together with output line or other signal and power line, and the input-output line of filter must not be placed side by side.
3, electrical control cubicles adopts sheet metal member in the optimal technical scheme of the present invention, during packed and transported, can areal deformation not scratch; Electrical control cubicles of the present invention can be stacked transportation in addition, once transport five surface quality that can both guarantee cabinet.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described:
Fig. 1 is the internal structure schematic diagram of embodiment of the invention electrical control cubicles;
Fig. 2 is the general structure schematic diagram of embodiment of the invention electrical control cubicles;
Fig. 3 is the cross-sectional view of embodiment of the invention electrical control cubicles;
Fig. 4 is another cross-sectional view of embodiment of the invention electrical control cubicles.
Wherein: 1 is division board, and 2 is the frequency converter part, and 3 is filter, and 4 is relay, and 5 is binding post.
Embodiment
Below in conjunction with specific embodiment such scheme is described further.Should be understood that these embodiment are used to the present invention is described and are not limited to limit the scope of the invention.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
Embodiment as shown in the figure, this electrical control cubicles comprises strong power part, weak current part, division board 1 is set between described strong power part weak current part isolates, described strong power part comprises frequency converter brake unit 2, between described frequency converter brake unit and power supply filter 3 is set, described weak current part comprises PLC relay 4, described relay output signal feedback inverter state.Described frequency converter is accepted the mechanical equipment operation of terminal 5 controls, and described automatically controlled cabinet is the panel beating cabinet.
Described plant equipment is an elevator.Described division board is the metal division board.The heat radiation through hole is set on the described cabinet.The control cable of described frequency converter is a shielding conductor.Described electrical control cubicles is the multilayer cabinet, and the heat radiation through hole is set between described cabinet.
Above-mentioned example only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalent transformations that spirit is done according to the present invention or modification all should be encompassed within protection scope of the present invention.
Claims (5)
1. electrical control cubicles, comprise strong power part, weak current part, it is characterized in that being provided with between described strong power part, weak current part division board (1) isolates, described strong power part comprises frequency converter brake unit (2), filter (3) is set between described frequency converter brake unit and power supply, described weak current part comprises PLC relay (4), described relay output signal feedback inverter state.
2. electrical control cubicles according to claim 1 is characterized in that described division board is the metal division board.
3. electrical control cubicles according to claim 1 is characterized in that being provided with on the described cabinet heat radiation through hole.
4. electrical control cubicles according to claim 1, the control cable that it is characterized in that described frequency converter is a shielding conductor.
5. electrical control cubicles according to claim 1 is characterized in that described electrical control cubicles is the multilayer cabinet, is provided with the heat radiation through hole between described cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201855995U CN201478714U (en) | 2009-06-23 | 2009-06-23 | Electrical control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201855995U CN201478714U (en) | 2009-06-23 | 2009-06-23 | Electrical control cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201478714U true CN201478714U (en) | 2010-05-19 |
Family
ID=42414971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201855995U Expired - Fee Related CN201478714U (en) | 2009-06-23 | 2009-06-23 | Electrical control cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201478714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997272A (en) * | 2010-10-27 | 2011-03-30 | 上海三一科技有限公司 | Wiring harness electric control cabinet |
-
2009
- 2009-06-23 CN CN2009201855995U patent/CN201478714U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997272A (en) * | 2010-10-27 | 2011-03-30 | 上海三一科技有限公司 | Wiring harness electric control cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215151 Suzhou high tech Zone, Jiangsu West Road, No. 28 Patentee after: Suzhou Shijia Science & Technology Inc. Address before: 215151 Suzhou high tech Zone, Jiangsu West Road, No. 28 Patentee before: Suzhou Shijia Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20170623 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |