CN202102793U - Main circuit power cable for frequency converter - Google Patents
Main circuit power cable for frequency converter Download PDFInfo
- Publication number
- CN202102793U CN202102793U CN2011201762644U CN201120176264U CN202102793U CN 202102793 U CN202102793 U CN 202102793U CN 2011201762644 U CN2011201762644 U CN 2011201762644U CN 201120176264 U CN201120176264 U CN 201120176264U CN 202102793 U CN202102793 U CN 202102793U
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- shielding layer
- frequency converter
- power cable
- layer
- cable
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Abstract
The utility model discloses a main circuit power cable for a frequency converter, which comprises a plurality of conductors. An inner shielding layer, an insulating layer, a middle shielding layer and an outer shielding layer are respectively and sequentially wrapped outside the plurality of conductors, a total shielding layer is wrapped outside the plurality of conductors wrapped by the outer shielding layer, a plurality of filling ropes with triangular sections are arranged between the total shielding layer and the outer shielding layer, and a winding layer and a sheath layer are sequentially wrapped outside the total shielding layer. The main circuit power cable for the frequency converter adopts several layers of shielding layers, thereby being good in shielding performance, having strong voltage impact resistance, being capable of resisting interferences of strong electrostatic coupling, electromagnetic induction, electric waves, bad earth and power line conduction. When current component of higher harmonic and adjacent frequency harmonic appears in a circuit, the sum of currents of the shielding layers are zero, thereby having no interference to the outside. Simultaneously a plurality of filling ropes are arranged outside the outer shielding layer of the plurality of conductors, and the special shape of the filling ropes enables the cable to be compact in structure, thereby greatly improving anti-tensile performance and prolonging service life of the cable.
Description
Technical field:
The utility model relates to the power cable field, relates in particular to a kind of frequency converter and uses the major loop power cable.
Background technology:
Power cable (power cable) is used to transmit and distribute the cable of electric energy.Be usually used in the underground electrical network in city, power station lead line, industrial and mining enterprises in-line power and cross river, the submarine transmission line in sea excessively.In power circuit, the shared proportion of cable increases just gradually.Power cable is in order to transmit and to distribute the cable product of high-power electric energy, comprising 1-500KV and above various electric pressure, the power cable of various insulation in the main line of electric power system.
Frequency-changing cable makes us will take all factors into consideration when it is carried out structural design because of its special environment for use and performance requirement, optimizes and forms.With regard to structural design, mainly set about research from the influence and frequency-changing cable two aspects that influence to external world of outer bound pair frequency-changing cable, also to consider simultaneously frequency-changing cable dielectric voltage withstand, lay space, bending radius or the like.
The utility model adopts the crosslinked polyethylene restrictive coating, and electric property is very superior.The use of frequency conversion equipment is increasing to the demand of supporting with it private cable (calling frequency-changing cable in the following text), and specification requirement is also increasingly high.Therefore producer need further investigate and understand the structure and the performance of this type of cable, so that can make and select high-quality.The utility model has solved the characteristic that structure is compact inadequately, shielding properties is not strong of original cable.
The utility model content:
The purpose of the utility model provides a kind of frequency converter and uses the major loop power cable; Be applicable to that ac rated voltage 8.7/10kV reaches with the electric power transfer in the down conversion system, product has stronger proof voltage impact, can resist strong Electrostatic Coupling, electromagnetic induction, electric wave, imperfect earth and power line conducted interference; When high order harmonic component and side frequency harmonic current components appear in circuit; Screen electric current summation is zero, does not disturb so do not produce to external world, and shielding properties is strong, compact conformation.
The technical scheme of the utility model is following:
Frequency converter is used the major loop power cable; Comprise several conductors; It is characterized in that: described several conductors are enclosed with internal shield, insulating barrier, middle screen, outer shielding layer outward respectively successively, and several conductors outside of parcel outer shielding layer is enclosed with total screen, is provided with several gasket for packings between described total screen and the outer shielding layer; Described gasket for packing cross section triangularity, described total screen is enclosed with lapping layer, restrictive coating outward successively.
Described frequency converter is used the major loop power cable, it is characterized in that: described internal shield, middle screen, outer shielding layer adopt the copper wire braiding to constitute, and described total screen adopts the wrapped formation of copper strips.
Described frequency converter is used the major loop power cable, it is characterized in that: described insulating layer material adopts crosslinked polyethylene.
Described frequency converter is used the major loop power cable, it is characterized in that: described restrictive coating material adopts polyvinyl chloride.
The utility model has the advantages that:
The utility model adopts several layers of screen; Advantages of good shielding performance; Have stronger proof voltage impact, can resist strong Electrostatic Coupling, electromagnetic induction, electric wave, imperfect earth and power line conducted interference, when high order harmonic component and side frequency harmonic current components appear in circuit; Screen electric current summation is zero, does not disturb so do not produce to external world; The outer shielding layer of several conductors is provided with several gasket for packings outward simultaneously, and the special shape of gasket for packing makes that the structure of cable is compact more, and the stretch-proof performance improves greatly, and prolong the useful life of cable.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Embodiment:
Frequency converter is used the major loop power cable, comprises several conductors 1, several conductor 1 outer internal shield 2, insulating barrier 3, middle screen 4, outer shielding layers 5 of being enclosed with successively respectively; Several conductors 1 outside of parcel outer shielding layer 5 is enclosed with total screen 6; Be provided with several gasket for packings 7 between total screen 6 and the outer shielding layer 5, gasket for packing 7 cross section triangularities, total screen 6 outer lapping layer 8, restrictive coatings 9 of being enclosed with successively; Internal shield 2, middle screen 4, outer shielding layer 5 adopt the copper wire braiding to constitute; The shielding properties of cable is enough to satisfy the real work demand, and total screen 6 adopts the wrapped formation of copper strips, and insulating barrier 3 materials adopt crosslinked polyethylene; Restrictive coating 9 materials adopt polyvinyl chloride, make that the electric property of cable is very superior.
Claims (4)
1. a frequency converter is used the major loop power cable; Comprise several conductors; It is characterized in that: described several conductors are enclosed with internal shield, insulating barrier, middle screen, outer shielding layer outward respectively successively, and several conductors outside of parcel outer shielding layer is enclosed with total screen, is provided with several gasket for packings between described total screen and the outer shielding layer; Described gasket for packing cross section triangularity, described total screen is enclosed with lapping layer, restrictive coating outward successively.
2. frequency converter according to claim 1 is used the major loop power cable, it is characterized in that: described internal shield, middle screen, outer shielding layer adopt the copper wire braiding to constitute, and described total screen adopts the wrapped formation of copper strips.
3. frequency converter according to claim 1 is used the major loop power cable, it is characterized in that: described insulating layer material adopts crosslinked polyethylene.
4. frequency converter according to claim 1 is used the major loop power cable, it is characterized in that: described restrictive coating material adopts polyvinyl chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201762644U CN202102793U (en) | 2011-05-30 | 2011-05-30 | Main circuit power cable for frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201762644U CN202102793U (en) | 2011-05-30 | 2011-05-30 | Main circuit power cable for frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202102793U true CN202102793U (en) | 2012-01-04 |
Family
ID=45388797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201762644U Expired - Fee Related CN202102793U (en) | 2011-05-30 | 2011-05-30 | Main circuit power cable for frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202102793U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794275A (en) * | 2014-01-21 | 2014-05-14 | 安徽华茜电缆科技有限公司 | Major loop electric power cable for medium-voltage frequency converter |
| CN103794274A (en) * | 2014-01-18 | 2014-05-14 | 安徽华茜电缆科技有限公司 | Environmental protection high-temperature-resistant pulling-resistant type intrinsic safety computer shield cable |
-
2011
- 2011-05-30 CN CN2011201762644U patent/CN202102793U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794274A (en) * | 2014-01-18 | 2014-05-14 | 安徽华茜电缆科技有限公司 | Environmental protection high-temperature-resistant pulling-resistant type intrinsic safety computer shield cable |
| CN103794275A (en) * | 2014-01-21 | 2014-05-14 | 安徽华茜电缆科技有限公司 | Major loop electric power cable for medium-voltage frequency converter |
| CN103794275B (en) * | 2014-01-21 | 2017-01-11 | 安徽华茜电缆科技有限公司 | Major loop electric power cable for medium-voltage frequency converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20150530 |
|
| EXPY | Termination of patent right or utility model |