CN2762297Y - Power cable for rated voltage 0.6/1kV frequency changer circuit - Google Patents
Power cable for rated voltage 0.6/1kV frequency changer circuit Download PDFInfo
- Publication number
- CN2762297Y CN2762297Y CN 200520114998 CN200520114998U CN2762297Y CN 2762297 Y CN2762297 Y CN 2762297Y CN 200520114998 CN200520114998 CN 200520114998 CN 200520114998 U CN200520114998 U CN 200520114998U CN 2762297 Y CN2762297 Y CN 2762297Y
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- CN
- China
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- power cable
- rated voltage
- frequency changer
- changer circuit
- electric power
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- Expired - Fee Related
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Abstract
The utility model discloses a dedicated power cable for a frequency converting circuit of 0.6/1kV rated voltage, which comprises an insulated core, wherein an insulating tapping belt, a shielding layer, an isolating sleeve, concentric conductors and a sheath are orderly packed outside the insulated core, wherein a composite shielding structure lapped by copper belts woven by copper wires is adopted by the shielding layer and the concentric conductors are connected with the ground. A symmetrical structure is adopted by the structural design of the dedicated power cable for a frequency converting circuit of 0.6/1kV rated voltage of the utility model, and a concentric conductor mode is adopted by grounding wires which are evenly coated around an integral cable phase wire. Not only is impedance influence eliminated or weakened, but also better electromagnetic shielding effects are played.
Description
Technical field
The utility model relates to a kind of power cable, particularly relates to a kind of rated voltage 0.6/1kV frequency changer circuit special electric power cable.
Background technology
Eighties of last century eight, the nineties, the converter technique of China is at the early-stage, frequency-changing cable is basically by import, the production of frequency-changing cable and manufacturing technology are only grasped in minority developed country and some trans-corporation inside.But along with development, the progress of science and technology of society, converter technique is used widely at electromechanics and every profession and trade, and employed frequency conversion special electric power cable consumption is increasing in frequency conversion dynamic transfer system and the distribution line.Therefore frequency changer circuit special electric power cable not only has certain economic benefits and also has the certain social benefit.
Summary of the invention
The purpose of this utility model provide a kind of have the less and good anti-capability of electromagnetic shielding of inductive reactance value, rated voltage 0.6/1kV frequency changer circuit special electric power cable.
The technical solution of the utility model is: described a kind of rated voltage 0.6/1kV frequency changer circuit special electric power cable, comprise insulated wire cores, and it is characterized in that: outside insulated wire cores, be enclosed with insulation band, screen, separation sleeve, concentric conductor and sheath successively.Screen wherein adopts the wrapped composite shielding structure of copper wire braiding copper strips, concentric conductor ground connection.
Insulated wire cores in this rated voltage 0.6/1kV frequency changer circuit special electric power cable is made up of the conductor crosslinked polyetylene insulated layer outer with being coated on conductor.And the number of insulated wire cores can be 3 or 3+3, the complete symmetric arrays of phase place.
Rated voltage 0.6/1kV frequency changer circuit special electric power cable of the present utility model has the following advantages:
1, structure adopts composite shielding layer, can either antistaticly be coupled, electromagnetic induction and electromagnetic wave can reduce or avoid in the supply line interference each other again.
2, on structure is formed, take phase line to be coated in the screen, screen is coated on the dual shield structure in the concentric conductor (earth connection) again.When zero sequence or higher harmonic current component appearred in circuit, the electric current total amount in the concentric conductor was zero, does not produce electromagnetic interference to external world.
3, on structural design, adopt 3 cores or the complete symmetric arrays of 3+3 core, can effectively prevent the imbalance of electromagnetic coupled and phase place.
4, have even and lower phase line impedence, compare, improved the quality of power supply greatly with common power cable.
5, because earth connection adopts the concentric conductor structure, its inductive reactance is minimum, protects the startup of equipment (action) automatically in case cable helps short circuit when breaking down, and has ensured the safety of cable and other relevant device effectively.
6, two-layer compound shielding construction (comprising concentric conductor) makes and disturbs the antidamping ratio to reach more than the 100Bb, thereby has guaranteed that extraneous any interference does not exert an influence to system.
Description of drawings
Fig. 1 is the structural representation of rated voltage 0.6/1kV frequency changer circuit special electric power cable of the present utility model;
Among the figure, symbol 1 is represented conductor, the crosslinked polyetylene insulated layer of symbol 2 representatives, and symbol 3 representative insulation bands, symbol 4 is represented screen, and symbol 5 is represented separation sleeve, and symbol 6 is represented concentric conductor, and symbol 7 is represented sheath.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
As shown in the figure, a kind of rated voltage 0.6/1kV frequency changer circuit special electric power cable, comprise the insulated wire cores of forming by conductor (1) and crosslinked polyetylene insulated layer (2), outside insulated wire cores, be enclosed with insulation band (3), screen (4), separation sleeve (5), concentric conductor (6) and sheath (7) successively.Screen wherein (4) adopts the wrapped composite shielding structure of copper wire braiding copper strips, concentric conductor (6) ground connection.
Frequency changer circuit special electric power cable is different from common four-core (3+1 or 4 etc. cored structure) power cable on structural design, but adopt 3 symmetrical cored structures, earth connection adopts the concentric conductor mode, evenly be coated on around the whole cable phase line, not only eliminate or weakened impedance influences, and played effectiveness preferably.
Manufacture process of the present utility model is to use equipment such as the general wire drawing machine of cable industry, pipe twisting machine, synnema machine to prepare conductor, utilize cabler that insulated wire cores is twisted together again, with the wrapped composite shielding structure of copper wire braiding copper strips, extrude isolation (cover) layer, wrapped concentric conductor extrudes oversheath (layer) at last.The manufacturing process flow of frequency changer circuit special electric power cable is as follows:
Wire drawing → annealing → twisted wire (bunch) → (extruding) insulation → stranding (band) → shielding → (extruding) separator → wrapped concentric conductor → (extruding) oversheath → packing (warehouse-in).
Claims (3)
1, a kind of rated voltage 0.6/1kV frequency changer circuit special electric power cable, comprise the insulated wire cores of forming by the conductor crosslinked polyetylene insulated layer outer with being coated on conductor, it is characterized in that: outside insulated wire cores, be enclosed with insulation band, screen, separation sleeve, concentric conductor and sheath successively, concentric conductor ground connection wherein.
2, rated voltage 0.6/1kV frequency changer circuit special electric power cable according to claim 1 is characterized in that described screen adopts the wrapped composite shielding structure of copper wire braiding copper strips.
3, rated voltage 0.6/1kV frequency changer circuit special electric power cable according to claim 1, the number that it is characterized in that described insulated wire cores are 3 or 3+3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520114998 CN2762297Y (en) | 2005-08-03 | 2005-08-03 | Power cable for rated voltage 0.6/1kV frequency changer circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520114998 CN2762297Y (en) | 2005-08-03 | 2005-08-03 | Power cable for rated voltage 0.6/1kV frequency changer circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2762297Y true CN2762297Y (en) | 2006-03-01 |
Family
ID=36095413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520114998 Expired - Fee Related CN2762297Y (en) | 2005-08-03 | 2005-08-03 | Power cable for rated voltage 0.6/1kV frequency changer circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2762297Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157243A (en) * | 2011-04-18 | 2011-08-17 | 大连沈特电缆有限公司 | Copper-clad aluminum core frequency converter cable |
| CN102610317A (en) * | 2012-03-30 | 2012-07-25 | 无锡市远登电缆有限公司 | Variable frequency cable |
| CN103714902A (en) * | 2014-01-14 | 2014-04-09 | 深圳市东佳信电线电缆有限公司 | Special-structure environment-friendly power cable for transformer connection |
-
2005
- 2005-08-03 CN CN 200520114998 patent/CN2762297Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157243A (en) * | 2011-04-18 | 2011-08-17 | 大连沈特电缆有限公司 | Copper-clad aluminum core frequency converter cable |
| CN102610317A (en) * | 2012-03-30 | 2012-07-25 | 无锡市远登电缆有限公司 | Variable frequency cable |
| CN102610317B (en) * | 2012-03-30 | 2013-10-09 | 无锡市远登电缆有限公司 | Variable frequency cable |
| CN103714902A (en) * | 2014-01-14 | 2014-04-09 | 深圳市东佳信电线电缆有限公司 | Special-structure environment-friendly power cable for transformer connection |
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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: 20060301 Termination date: 20110803 |