CN2689405Y - Cable of frequency transformer - Google Patents
Cable of frequency transformer Download PDFInfo
- Publication number
- CN2689405Y CN2689405Y CN 200420026132 CN200420026132U CN2689405Y CN 2689405 Y CN2689405 Y CN 2689405Y CN 200420026132 CN200420026132 CN 200420026132 CN 200420026132 U CN200420026132 U CN 200420026132U CN 2689405 Y CN2689405 Y CN 2689405Y
- Authority
- CN
- China
- Prior art keywords
- cable
- utility
- core wires
- model
- heart yearns
- 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)
Abstract
The utility model is a cable of frequency transformer. The utility model is characterized in that six core wires are arranged at the same cable, comprising three main core wires and three neutral wires; wherein the three main core wires are separately arranged at each top of an equilateral triangle by the center of the cable. The three neutral wires are equally arranged around the three main core wires. Through reasonable arrangement of the six core wires, the utility model alters space electromagnetic field of the power transmission line, assures symmetrical characteristic of the space electromagnetic field and effectively reduce the homopolar component. By arranging a double shield, the utility model can shield the six core wires respectively, and then make an outer layer shield aiming at the cable in order to eliminate the internal or external electromagnetic interference that may be generated, which guarantees secure and stable operation of the system.
Description
Technical field:
The utility model relates to cable, the used cable of the frequency converter of more specifically saying so.
Background technology:
The speed-adjusting and control system of industrial automation has passed through several times and has changed, and from commutator buncher, electromagnetic adjustable speed motor, dc speed-regulating motor, has developed into so far and has adopted the change frequency to come the new technology of speed governing.
Because frequency control has series of characteristics such as low noise, low energy consumption, speed governing are stable, low cruise is reliable, thereby be able to extensive use at row such as machinery, metallurgy.Variable-frequency motor and relevant power supply jump lead are adopted in frequency control, and traditional three-phase and four-line formula power cable is poor owing to the phase sequence symmetry, anti-interference difference and can't guarantee the safe and stable operation of system.
Summary of the invention:
The utility model is for solving above-mentioned existing in prior technology problem, a kind of converter cable of strong anti-interference performance being provided.
The technical scheme that the utility model technical solution problem is adopted is:
Design feature of the present utility model is to be provided with six roots of sensation heart yearn in same cable, comprise three main heart yearns and three neutral lines, wherein, three main heart yearns are the center with the center of circle of described cable, divide to be on each summit of equilateral triangle, three neutral lines are divided equally around three main heart yearns.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, the utility model has changed the distribution of power transmission line external electromagnetic field by the reasonable setting of six roots of sensation heart yearn, has guaranteed the symmetry of external electromagnetic field, effectively reduces zero-sequence component.
2, the utility model can promptly shield respectively six roots of sensation heart yearn by double layer screen is set, and does outer shielding at cable again, to eliminate the issuable electromagnetic interference in inside and outside, guarantees the stable operation of system safety.
Number in the figure:
Fig. 1 is provided with structural representation for the utility model heart yearn.
Fig. 2 is the utility model screen section structure schematic diagram.
Number in the figure: 1 conductor, 2 insulating barriers, 3 fillers, 4 screens, 5 outer shielding layers, 6 bands, 7 external jackets, 8 main heart yearns, 9 neutral lines, 10 cables.
Embodiment:
Referring to Fig. 1, present embodiment is to be provided with six roots of sensation heart yearn in same cable 10, comprises three main heart yearns 8 and three neutral lines 9, wherein, three main heart yearns 8 are the center with the center of circle of cable, divide to be on each summit of equilateral triangle, and three neutral lines 9 are divided equally around three main heart yearns 8.
Shown in Fig. 1, more compact in order to make structure, three main heart yearns 8 are arranged on interior week, three neutral lines 9 are arranged on its periphery.On the contrary, also three main heart yearns 8 can be arranged on periphery, three neutral lines 9 set within it week.
Referring to Fig. 2, in concrete the enforcement, six roots of sensation heart yearn is followed successively by conductor 1, insulating barrier 2 and screen 4 from inside to outside.Cable 10 is followed successively by central filler 3, outer shielding layer 5, band 6 and external jacket 7 from inside to outside.Six roots of sensation heart yearn is embedded in the filler 3 of cable 10.This wherein, comprise screen 4 and outer shielding layer 5 the double shield layer be provided with can effectively eliminate in the interference in the upper bound.
In addition, insulating barrier 2 can be crosslinked polyetylene insulated layer, and this material dielectric constant is little, can reduce electric capacity between core.Sheath 7 can be a pvc sheath, and screen 4 is the copper wire woven shield, and outer shielding layer 5 is the copper strips lapped shielding layer, and band 6 is the non-hygroscopic band.
Claims (6)
1, converter cable, it is characterized in that in same cable (10), being provided with six roots of sensation heart yearn, comprise three main heart yearns (8) and three neutral lines (9), wherein, three main heart yearns (8) are the center with the center of circle of described cable (10), divide to be on each summit of equilateral triangle, three neutral lines (9) are divided equally around three main heart yearns (8).
2, converter cable according to claim 1 is characterized in that described three main heart yearns (8) are in interior week, and three neutral lines (9) are in periphery.
3, converter cable according to claim 1, it is characterized in that the described six roots of sensation heart yearn of three main heart yearns (8) and three neutral lines (9) that comprises is followed successively by conductor (1), insulating barrier (2) and screen (4) from inside to outside, described cable (10) is followed successively by central filler (3), outer shielding layer (5), band (6) and external jacket (7) from inside to outside, and described six roots of sensation heart yearn is embedded in the filler (3) of cable (10).
4, converter cable according to claim 3 is characterized in that described insulating barrier (2) is crosslinked polyetylene insulated layer, and sheath (7) is a pvc sheath.
5, converter cable according to claim 3 is characterized in that described screen (4) is the copper wire woven shield, and outer shielding layer (5) is the copper strips lapped shielding layer.
6, converter cable according to claim 3 is characterized in that described band (6) is the non-hygroscopic band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420026132 CN2689405Y (en) | 2004-04-09 | 2004-04-09 | Cable of frequency transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420026132 CN2689405Y (en) | 2004-04-09 | 2004-04-09 | Cable of frequency transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2689405Y true CN2689405Y (en) | 2005-03-30 |
Family
ID=34670083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420026132 Expired - Fee Related CN2689405Y (en) | 2004-04-09 | 2004-04-09 | Cable of frequency transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2689405Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103886977A (en) * | 2014-03-31 | 2014-06-25 | 陈迎霞 | Plastic insulation variable frequency cable |
| CN107959386A (en) * | 2016-10-14 | 2018-04-24 | 罗伯特·博世有限公司 | Remove interference system, driving device and hand held power machine |
-
2004
- 2004-04-09 CN CN 200420026132 patent/CN2689405Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103886977A (en) * | 2014-03-31 | 2014-06-25 | 陈迎霞 | Plastic insulation variable frequency cable |
| CN107959386A (en) * | 2016-10-14 | 2018-04-24 | 罗伯特·博世有限公司 | Remove interference system, driving device and hand held power machine |
| CN107959386B (en) * | 2016-10-14 | 2023-03-14 | 罗伯特·博世有限公司 | Interference suppression system, drive device and hand-held power tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201331969Y (en) | Double-shielding computer cable | |
| CN203300251U (en) | Variable frequency cable used for ships and warships | |
| CN1643623A (en) | Three-conductor cable | |
| CN2689405Y (en) | Cable of frequency transformer | |
| CN201489892U (en) | Frequency converter cable with concentric conductors | |
| CN201622866U (en) | Variable frequency cable | |
| CN214588185U (en) | Frequency conversion cable | |
| CN203026242U (en) | Variable frequency cable for frequency converter | |
| CN109300607A (en) | A kind of abnormity single line circle process copper conductor and special-shaped single line circle process copper conductor cable | |
| CN201946377U (en) | Special power cable for frequency converter | |
| CN2762297Y (en) | Power cable for rated voltage 0.6/1kV frequency changer circuit | |
| CN203644459U (en) | Aluminium alloy flame-retardant frequency variable cable | |
| CN2651899Y (en) | Symmetric shielding electric cable for frequency converter motor | |
| CN203799742U (en) | High-flexibility anti-deflection variable-frequency flexible cable | |
| CN203026253U (en) | Variable-frequency power cable with high flexibility and shielding property | |
| CN201946332U (en) | Variable frequency cable for ships | |
| CN2845116Y (en) | Shielded cable for frequency control of motor working below 35 KV | |
| CN109903920A (en) | A kind of waterproofing type medium voltage converter cable | |
| CN201489873U (en) | Frequency converter soft cable suitable for 1,000V and lower than 1,000V for ships and warships | |
| CN203055536U (en) | Frequency conversion power cable | |
| CN204926884U (en) | Crosslinked polyethylene shielding frequency conversion cable | |
| CN2613861Y (en) | Three-core tile-shaped shielding type power cable | |
| CN2530329Y (en) | Specially shielded/armoured control cable | |
| CN203644461U (en) | Aluminium alloy fire-retardant frequency variable cable | |
| CN211929141U (en) | Frequency conversion cable with good transmission performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050330 |