CN202373373U - Impulse voltage withstanding variable frequency cable - Google Patents
Impulse voltage withstanding variable frequency cable Download PDFInfo
- Publication number
- CN202373373U CN202373373U CN2011205148350U CN201120514835U CN202373373U CN 202373373 U CN202373373 U CN 202373373U CN 2011205148350 U CN2011205148350 U CN 2011205148350U CN 201120514835 U CN201120514835 U CN 201120514835U CN 202373373 U CN202373373 U CN 202373373U
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- shielding layer
- wire cores
- cable
- screen
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Abstract
The utility model discloses an impulse voltage withstanding variable frequency cable, which comprises a cable core, a shielding layer and a sheath layer. The cable core comprises a wire core and an inner wrapping layer, wherein the wire core is formed by three main wire cores, three neutral wire cores and insulation layers which are used for coating the main wire cores and the neutral wire cores, the insulation layers which coat the main wire cores are tangent pairwise, the netrual wire cores and the main wire cores are ranked at intervals, the shielding layer and the sheath layer are sequentially arranged outside the cable core, the shielding layer is an optional combination of a copper wire braiding shielding layer, a copper wire winding shielding layer, a copper strip wrapping shielding layer and an aluminium-plastic composite tape wrapping shielding layer, and the diameter of each of the main wire cores is larger than that of each of the neutral wire cores. According to the impulse voltage withstanding variable frequency cable, the technical defect that neutral wire cores of cables are punched due to higher harmonic produced by variable frenqucy systems in prior art is overcome, and the impulse voltage withstanding variable frequency is capable of withstanding the higher harmonic produced by the variable frequency systems and strong in withstanding voltage impulse.
Description
Technical field
The utility model belongs to field of cables, is specifically related to a kind of frequency-changing cable of shock-resistant voltage.
Background technology
Frequency-changing cable is mainly used between variable frequency power supply and the variable-frequency motor cable that connects usefulness, and in rated voltage 1.83KV and the following electric line, makes transmission of electric energy and use.Be particularly useful for industries such as papermaking, metallurgy, metal processing, mine, railway and food processing.The electric equipment products of modern industry; Great majority all design and adopt the variable-frequency motor control system; Realize the purpose of energy-conservation economize on electricity, but variable-frequency motor and control system use this through the frequent frequency conversion of regular meeting's high speed, pulse current increases; Easily frequency converter is caused damage, the life-span of motor and control system also can be affected.So this electricity frequency cable that just requires to connect electricity frequency electric machine control system has good anti-surge property and shield effectiveness.The anti-surge property that shielding layer structure had of the frequency-changing cable of existing shock-resistant voltage is not enough to stand the high order harmonic component that frequency conversion system produces.
The utility model content
The technical problem that the utility model will solve is that cable can cause neutral core to puncture because of the high order harmonic component that frequency conversion system produces, and provides a kind of and can stand the high order harmonic component that frequency conversion system produces, the frequency-changing cable of the shock-resistant voltage that anti-surge property is strong.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme:
A kind of frequency-changing cable of shock-resistant voltage; Comprise cable core, screen and restrictive coating; Wherein cable core comprises core and lapping layer; Said core is made up of the insulating barrier of three master cores, three neutral cores and parcel master core, neutral core, the tangent in twos setting of insulating barrier of parcel master core, and neutral core and master core are spaced; Cable core is followed successively by screen, restrictive coating outward, and said screen is the combination in any that copper wire woven shield, copper wire twine screen, copper strips lapped shielding layer, aluminium-plastic tape lapped shielding layer.
Further, the diameter of said master core is greater than the diameter of neutral core.
Further, said screen is the combination that copper wire twines screen and copper strips lapped shielding layer.Copper wire twines screen can satisfy the long-pending requirement of screen pair cross-section to greatest extent, can reduce to shield the space and add the copper strips lapped shielding layer, thereby better play shielding action.
The frequency-changing cable of implementing the shock-resistant voltage of the utility model has following beneficial effect: can stand the high order harmonic component that frequency conversion system produces; The stack of the current component that can not produce because of high order harmonic component punctures neutral core; With low cost; Has stronger antijamming capability, shock-resistant voltage capability, advantages such as low radiation.
Description of drawings
Fig. 1 is the structural representation in the frequency-changing cable cross section of the shock-resistant voltage of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the technical scheme of the utility model is further specified:
The frequency-changing cable of shock-resistant voltage as shown in Figure 1; Comprise cable core, screen 7 and restrictive coating 8; Wherein cable core comprises core and interior lapping layer 6, and core constitutes the tangent in twos setting of insulating barrier 4 of parcel master core by the insulating barrier 4 of the neutral core of three master cores 3, three 1, parcel master core and the insulating barrier 2 that wraps up neutral core; Neutral core 1 is spaced with master core 3; Space between core and the interior lapping layer 6 is provided with packed layer 5, and cable core is followed successively by screen 7, restrictive coating 8 outward, and said screen 7 is the aluminium-plastic tape lapped shielding layer.The diameter of master core 3 is greater than the diameter of neutral core 1.Screen 7 is the combination in any of copper wire woven shield, copper strips lapped shielding layer, aluminium-plastic tape lapped shielding layer, and the selection of screen 7 has: the copper wire woven shield; Copper wire twines screen; The copper strips lapped shielding layer; The aluminium-plastic tape lapped shielding layer; The combination of copper wire woven shield and copper strips lapped shielding layer; Copper wire twines the combination of screen and copper strips lapped shielding layer; The combination of copper strips lapped shielding layer and aluminium-plastic tape lapped shielding layer; Copper wire twines the combination of screen and aluminium-plastic tape lapped shielding layer; The combination of copper wire woven shield and aluminium-plastic tape lapped shielding layer; The combination that copper wire woven shield, copper wire twine screen, copper strips lapped shielding layer, four kinds of screens of aluminium-plastic tape lapped shielding layer.
Above-described only is the preferred implementation of the utility model; Should be understood that; For a person skilled in the art, under the prerequisite that does not break away from the utility model structure, can also make some distortion and improvement; These also should be regarded as the protection range of the utility model, and these can not influence effect and practical applicability that the utility model is implemented.
Claims (3)
1. the frequency-changing cable of a shock-resistant voltage; Comprise cable core, screen and restrictive coating; Wherein cable core comprises core and lapping layer; It is characterized in that: said core is made up of the insulating barrier of three master cores, three neutral cores and parcel master core, neutral core, the tangent in twos setting of insulating barrier of parcel master core, and neutral core and master core are spaced; Cable core is followed successively by screen, restrictive coating outward, and said screen is the combination in any that copper wire woven shield, copper wire twine screen, copper strips lapped shielding layer, aluminium-plastic tape lapped shielding layer.
2. according to the frequency-changing cable of the said shock-resistant voltage of claim 1, it is characterized in that: the diameter of said master core is greater than the diameter of neutral core.
3. according to the frequency-changing cable of the said shock-resistant voltage of claim 1, it is characterized in that: said screen is the combination that copper wire twines screen and copper strips lapped shielding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205148350U CN202373373U (en) | 2011-12-12 | 2011-12-12 | Impulse voltage withstanding variable frequency cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205148350U CN202373373U (en) | 2011-12-12 | 2011-12-12 | Impulse voltage withstanding variable frequency cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202373373U true CN202373373U (en) | 2012-08-08 |
Family
ID=46597067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205148350U Expired - Fee Related CN202373373U (en) | 2011-12-12 | 2011-12-12 | Impulse voltage withstanding variable frequency cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202373373U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928179A (en) * | 2013-12-06 | 2014-07-16 | 安徽凌宇电缆科技有限公司 | Low-smoke halogen-free flame-retardant aluminum alloy variable frequency cable |
| CN104733108A (en) * | 2015-02-26 | 2015-06-24 | 安徽环宇电缆集团有限公司 | Variable frequency cable |
| CN108461185A (en) * | 2018-03-09 | 2018-08-28 | 深圳讯道实业股份有限公司 | A kind of antistatic trailing cable |
-
2011
- 2011-12-12 CN CN2011205148350U patent/CN202373373U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928179A (en) * | 2013-12-06 | 2014-07-16 | 安徽凌宇电缆科技有限公司 | Low-smoke halogen-free flame-retardant aluminum alloy variable frequency cable |
| CN104733108A (en) * | 2015-02-26 | 2015-06-24 | 安徽环宇电缆集团有限公司 | Variable frequency cable |
| CN108461185A (en) * | 2018-03-09 | 2018-08-28 | 深圳讯道实业股份有限公司 | A kind of antistatic trailing cable |
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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: 20120808 Termination date: 20141212 |
|
| EXPY | Termination of patent right or utility model |