CN203300261U - Special cable of variable-frequency system - Google Patents
Special cable of variable-frequency system Download PDFInfo
- Publication number
- CN203300261U CN203300261U CN2013202690939U CN201320269093U CN203300261U CN 203300261 U CN203300261 U CN 203300261U CN 2013202690939 U CN2013202690939 U CN 2013202690939U CN 201320269093 U CN201320269093 U CN 201320269093U CN 203300261 U CN203300261 U CN 203300261U
- Authority
- CN
- China
- Prior art keywords
- cable
- core
- cores
- power
- groups
- 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
Links
Images
Landscapes
- Insulated Conductors (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses a special cable of a variable-frequency system. The special cable comprises three groups of power cores. The special cable is characterized in that semi-conductive filling cores are filled in enclosed spaces formed by inner sides of the three groups of power cores and three neutral cores are uniformly distributed in gaps of outer sides of the three groups of power cores so as to form a cable core; a wrapping tape layer wraps the cable core; the wrapping tape layer is provided with a woven shielding layer; an outer sheath is arranged on a periphery of the cable. Compared to the prior art, by using the special cable of the utility model, a main core and a zero line adopt a symmetrical structure; because of a lead exchange effect and symmetrical balance, an interference can be reduced to a minimum level. The special cable is suitable for a power wire and a power transmission and distribution line which have a strict requirement to a shielding property.
Description
Technical field
The utility model belongs to the cable technology field, is specifically related to a kind of frequency conversion system private cable.
Background technology
Converter technique is a technological revolution in dynamo-electric field in recent years, the application of frequency conversion speed-adjusting system is more and more universal, corresponding, the variable-frequency motor of connection governing system and power cable, the control cables of frequency-variable controller are also had higher requirement, with the higher harmonic current of avoiding generation in service, other power supplies, control loop are produced and disturb, or be subjected to the interference of external electromagnetic signal.
The utility model content
The purpose of this utility model is to provide a kind of frequency conversion system private cable of new construction, can effectively reduce the generation of higher harmonic current.
For realizing this purpose, the technical solution of the utility model is: a kind of frequency conversion system private cable, comprise three groups of power cores, be filled with semiconductive in the enclosure space that described three groups of power line in-core sides form and fill out core, be evenly equipped with three neutral cores in space, described three groups of power cores outside and jointly form cable core, described cable core is covered with belting layer outward, and described belting layer is provided with woven shield, and described oversheath is located at the cable outermost.
As preferably, annealing copper wire or tinned copper wire braiding that described woven shield is 0.2～0.4mm by diameter form.
As preferably, the conductor of described power core contains the fibre bundle strengthening core.
As preferably, oversheath is comprised of wrinkle composite steel-plastic belt moisture-proof layer and the black polyethylene sheath of vertical bag overlap joint.As preferably, annealing copper wire or tinned copper wire braiding that described woven shield is 0.2～0.4mm by diameter form.
With respect to three master cores and a zero line structure that common cable adopts, interference and the harmonic voltage of master core and zero line generation are unbalanced like this, in order to make cable, can work, and certainly will need to increase the insulation level of cable.And the utility model adopts symmetrical structure with the position of master core and zero line, because wire exchanges effect and symmetrical balance thereof, and can be with interference reduction to floor level.In addition, the measures such as braiding that increase the specialty synthetic fibre silk in sheath improve flexibility.The power core, core and monitor the conductor of core in add respectively the strengthening core that the specialty synthetic fibre bundle is made, conductor is directly played humidification.By adding fibre bundle, the conductor lay configuration is optimized design, greatly improves its flexibility, improve the adaptability of conductor to the instructions for use of frequency conversion system.
Description of drawings
Fig. 1 is cross-sectional view of the present utility model.
Wherein: 1. power core, 2. band, 3. woven shield, 4. neutral core, 5. oversheath.
Embodiment
In conjunction with the embodiments the utility model is further illustrated with reference to the accompanying drawings.
As shown in Figure 1, a kind of frequency conversion system private cable, comprise three groups of power cores 1, be filled with semiconductive in the inboard enclosure space that forms of described three groups of power cores 1 and fill out core, be evenly equipped with three common formation cable cores of neutral core 4 in described three groups of power cores 1 space, the outside, described cable core is covered with belting layer 2 outward, and described belting layer is provided with woven shield 3, and described oversheath 5 is located at the cable outermost.Wherein, described woven shield is that the annealing copper wire of 0.2～0.4mm or tinned copper wire braiding form by diameter; The conductor of described power core contains the fibre bundle strengthening core; Oversheath is comprised of wrinkle composite steel-plastic belt moisture-proof layer and the black polyethylene sheath of vertical bag overlap joint.
The improvement that the utility model carries out mainly for frequency conversion system private cable structure, the foregoing is only the utility model preferred embodiment, non-so namely limit to the scope of the claims of the present utility model, therefore simple and easy variation and the equivalent transformation of such as with the utility model specification and graphic content, doing, all should be contained in the scope of the claims of the present utility model.
Claims (4)
1. frequency conversion system private cable, comprise three groups of power cores, it is characterized in that, be filled with semiconductive in the enclosure space that described three groups of power line in-core sides form and fill out core, be evenly equipped with three neutral cores in space, described three groups of power cores outside and jointly form cable core, described cable core is covered with belting layer outward, and described belting layer is provided with woven shield, and oversheath is located at the cable outermost.
2. frequency conversion system private cable according to claim 1, is characterized in that, annealing copper wire or tinned copper wire braiding that described woven shield is 0.2～0.4mm by diameter form.
3. frequency conversion system private cable according to claim 1, is characterized in that, the conductor of described power core contains the fibre bundle strengthening core.
4. frequency conversion system private cable according to claim 1, is characterized in that, described oversheath is comprised of wrinkle composite steel-plastic belt moisture-proof layer and the black polyethylene sheath of vertical bag overlap joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202690939U CN203300261U (en) | 2013-05-17 | 2013-05-17 | Special cable of variable-frequency system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202690939U CN203300261U (en) | 2013-05-17 | 2013-05-17 | Special cable of variable-frequency system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203300261U true CN203300261U (en) | 2013-11-20 |
Family
ID=49576256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202690939U Expired - Fee Related CN203300261U (en) | 2013-05-17 | 2013-05-17 | Special cable of variable-frequency system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203300261U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183316A (en) * | 2014-08-22 | 2014-12-03 | 江苏天地龙电缆有限公司 | Anti-electromagnetic-interference flexible cable |
-
2013
- 2013-05-17 CN CN2013202690939U patent/CN203300261U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183316A (en) * | 2014-08-22 | 2014-12-03 | 江苏天地龙电缆有限公司 | Anti-electromagnetic-interference flexible cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103545032A (en) | Cable for coal mine frequency conversion device with voltage of 1.9/3.3kv and below | |
| CN203300261U (en) | Special cable of variable-frequency system | |
| CN104252889A (en) | High-strength anti-interference variable-frequency cable | |
| CN201174275Y (en) | Environment protection type shielding electric cable for electric power | |
| CN201689734U (en) | Variable frequency power cable | |
| CN203325492U (en) | Concentric conductor variable frequency cable | |
| CN203465967U (en) | PVC insulated aluminum-sheath railway signal cable | |
| CN106448861A (en) | Ultralow magnetic field cable | |
| CN201607968U (en) | Cable for radar | |
| CN206558241U (en) | A kind of flexible flat cable of high wave-absorbing effect | |
| CN211208080U (en) | Anti-interference cable | |
| CN203644461U (en) | Aluminium alloy fire-retardant frequency variable cable | |
| CN207441337U (en) | A kind of medium voltage electricity controls composite cable | |
| CN204991187U (en) | Polyvinyl chloride insulating sheath shields power cable | |
| CN209168810U (en) | A kind of cable for elevator shaft that strong and weak electricity combines | |
| CN204360820U (en) | A kind of new structure cable | |
| CN204720216U (en) | Low venting rate vacuum shielded type cable | |
| CN206058946U (en) | Anti-interference computer flexible cable | |
| CN203588706U (en) | Mobile medium-voltage silicone rubber special cable resistant to high and low temperature and interference | |
| CN202258450U (en) | Highly shielded frequency conversion cable | |
| CN203520967U (en) | 1.9/3.3 kV and below cable for coal mine frequency conversion apparatus | |
| CN203882673U (en) | Special cable for frequency converter | |
| CN214377710U (en) | Special strain signal cable for weighing equipment | |
| CN202855369U (en) | Reinforced type high temperature resistance control cable | |
| CN202549474U (en) | Special power cable for frequency converter |
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: 20131120 Termination date: 20150517 |
|
| EXPY | Termination of patent right or utility model |