CN105427951A - Environment-friendly cable for 15kV variable frequency motor - Google Patents
Environment-friendly cable for 15kV variable frequency motor Download PDFInfo
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- CN105427951A CN105427951A CN201410475718.6A CN201410475718A CN105427951A CN 105427951 A CN105427951 A CN 105427951A CN 201410475718 A CN201410475718 A CN 201410475718A CN 105427951 A CN105427951 A CN 105427951A
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Abstract
An environment-friendly cable for a 15kV variable frequency motor comprises three-phase insulating cores. Each three-phase insulating core sequentially includes, from inside to outside, a conductor, an inner shielding layer, an insulating layer, an outer shielding layer, a high temperature resistance semiconductive nylon band, a sparsely-wound copper wire and wrapped copper strip composite shielding layer, and a phase-splitting sheath. The three-phase insulating cores are symmetrically cabled to form a cable core, and the cabling lay ratio is 20-25 times. An inner lining, a cable core sparsely-wound copper wire and wrapped copper strip composite shielding layer, and an outer sheath are disposed outside the cable core in sequence. The high temperature resistance semiconductive nylon band, the sparsely-wound copper wire and wrapped copper strip composite shielding layer and the phase-splitting sheath are additionally disposed outside the outer shielding layer of each insulating core, and the cable core sparsely-wound copper wire and wrapped copper strip composite shielding layer is additionally disposed outside the inner lining of the cable core. In this way, the problems of overly high inductance and electromotive force are solved, electromagnetic induction, poor grounding and power line conduction interference can be prevented, the service life of the cable is prolonged, and consumption of electric energy is reduced.
Description
Technical field
The present invention relates to a kind of motor cable, particularly relate to a kind of 15kV variable-frequency motor environment-friendly cable.
Background technology
At present, conventional frequency-changing cable structure is: after the insulated wire cores be made up of conductor, internal shield, insulating barrier and outer shielding layer forms cable core, again wrapping lining-layer, copper strips lapped shielding layer, finally extrude oversheath, cause inductance, induced electromotive force excessive, therefore poor, the imperfect earth of this kind of structural cable opposing electromagnetic induction and interference power line conduct, electromagnetic radiation in whole system is strengthened, brings a large amount of consumption of electric energy thus and decrease useful life of cable.Its material therefor such as inner covering, restrictive coating mostly has been cigarette simultaneously halogen material, can to environment.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of 15kV variable-frequency motor environment-friendly cable, increase high temperature resistant semiconductive nylon tape outward by the outer shielding layer in insulated wire cores, dredge around copper wire and wrapped copper strips composite shielding layer and phase-splitting sheath, inner covering outside cable core increases cable core outward and dredges mode around copper wire and wrapped copper strips composite shielding layer, the problem that inductance, induced electromotive force are excessive can be solved, opposing electromagnetic induction, imperfect earth and power line conducted interference, improve the useful life of cable, decrease the consumption of electric energy.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of 15kV variable-frequency motor environment-friendly cable, comprises three phase isolated core,
Three phase isolated core from inside to outside successively by conductor, internal shield, insulating barrier, outer shielding layer, high temperature resistant semiconductive nylon tape, dredge and form around copper wire and wrapped copper strips composite shielding layer and phase-splitting sheath;
The symmetrical stranding of three phase isolated core forms cable core, and stranding lay ratio is 20 ~ 25 times;
Be disposed with inner covering outside cable core, cable core dredges around copper wire and wrapped copper strips composite shielding layer and oversheath;
Phase-splitting sheath, inner covering and oversheath are low smoke halogen-free environment-friendly materials layer;
The internal shield of insulated wire cores and outer shielding layer are the screen adopting 35kV cascade screen material to make, and insulating barrier is the insulating barrier adopting 35kV class F insulation material to make.
Inner covering is wrapping lining-layer.
The transition resistance of high temperature resistant semiconductive nylon tape is not more than 50 Ω.
15kV variable-frequency motor environment-friendly cable provided by the invention, beneficial effect is as follows:
1, high temperature resistant semiconductive nylon tape is increased outward by the outer shielding layer in insulated wire cores, dredge around copper wire and wrapped copper strips composite shielding layer and phase-splitting sheath, inner covering outside cable core increases cable core outward and dredges around copper wire and wrapped copper strips composite shielding layer, the internal shield of insulated wire cores and outer shielding layer are the screen adopting 35kV cascade screen material to make, insulating barrier is the mode of the insulating barrier adopting 35kV class F insulation material to make, inductance can be solved, the problem that induced electromotive force is excessive, opposing electromagnetic induction, imperfect earth and power line conducted interference, thus improve the anti-interference of Special cable of frequency-variable electric motor, decrease the electromagnetic radiation in whole system, improve the useful life of cable, decrease the consumption of electric energy, be exclusively used in 15kV high-power frequency conversion motor.
2, phase-splitting sheath, inner covering and oversheath all adopt low smoke halogen-free environment-friendly materials, serve effect and the effect of protection of the environment.
3, Stability Analysis of Structures, compact, it is strong that resistance to frequency converter produces pulse voltage impact.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of 15kV variable-frequency motor environment-friendly cable, comprises three phase isolated core,
Three phase isolated core from inside to outside successively by conductor 1, internal shield 2, insulating barrier 3, outer shielding layer 4, high temperature resistant semiconductive nylon tape 5, dredge and form around copper wire and wrapped copper strips composite shielding layer 6 and phase-splitting sheath 7;
The symmetrical stranding of three phase isolated core forms cable core, and stranding lay ratio is 20 ~ 25 times; Symmetrical cable structure is due to the interchangeability of wire, there is better Electro Magnetic Compatibility, suppression electromagnetic interference is played a role, the evil odd frequency in that of high order can be offset, improve the anti-interference of Special cable of frequency-variable electric motor, thus decrease the electromagnetic radiation of whole system.
Be disposed with inner covering 8 outside cable core, cable core is dredged around copper wire and wrapped copper strips composite shielding layer 9 and oversheath 10.
Phase-splitting sheath 7, inner covering 8 and oversheath 10 are low smoke halogen-free environment-friendly materials layer.
Inner covering 8 is wrapping lining-layer.
The transition resistance of high temperature resistant semiconductive nylon tape 5 is not more than 50 Ω.
Dredge and dredge around copper wire and wrapped copper strips composite shielding layer 9 as dredging around copper wire and oppositely tightening copper strips around copper wire and wrapped copper strips composite shielding layer 6 and cable core.
The internal shield 2 of insulated wire cores and outer shielding layer 4 are the screen adopting 35kV cascade screen material to make, and insulating barrier 3 is the insulating barrier adopting 35kV class F insulation material to make.
The production essentials of production technology of the present invention is as follows:
1, insulated wire cores conductor 1: adopt and meet the 2nd class conductor of GB/T3956-2008, protective wire core conductor divide equally three stranded;
2, insulated wire cores insulating barrier 3: adopt cross-linked polyethylene insulating material; Performance meets the regulation of GB/T12706.2-2008;
3, insulated wire cores shielding: adopt internal shield 2, outer shielding layer 4, dredge mode around copper wire and wrapped copper strips composite shielding layer 6 three layers of composite shielding.
4, stranding: stranding lay ratio is 20 ~ 25 times; Overlapping wrapped two-layer polyester band after stranding.
5, cable core shielding: employing cable core dredges the mode around copper wire and wrapped copper strips composite shielding layer 9.
6, oversheath 10 is extruded: adopt and add by the low-smoke halogen-free polyolefin material of the termite-resistant rodent-resistant repellant extracted in plant; Jacket thickness by GB/T12706.2-2008 appendix A computational methods determine.
Claims (3)
1. a 15kV variable-frequency motor environment-friendly cable, comprises three phase isolated core, it is characterized in that:
Three phase isolated core from inside to outside successively by conductor (1), internal shield (2), insulating barrier (3), outer shielding layer (4), high temperature resistant semiconductive nylon tape (5), dredge and form around copper wire and wrapped copper strips composite shielding layer (6) and phase-splitting sheath (7);
The symmetrical stranding of three phase isolated core forms cable core, and stranding lay ratio is 20 ~ 25 times;
Be disposed with inner covering (8) outside cable core, cable core dredges around copper wire and wrapped copper strips composite shielding layer (9) and oversheath (10);
Phase-splitting sheath (7), inner covering (8) and oversheath (10) are low smoke halogen-free environment-friendly materials layer;
The internal shield (2) of insulated wire cores and outer shielding layer (4) are the screen adopting 35kV cascade screen material to make, and insulating barrier (3) is the insulating barrier adopting 35kV class F insulation material to make.
2. 15kV variable-frequency motor environment-friendly cable according to claim 1, is characterized in that: inner covering (8) is wrapping lining-layer.
3. 15kV variable-frequency motor environment-friendly cable according to claim 1, is characterized in that: the transition resistance of high temperature resistant semiconductive nylon tape (5) is not more than 50 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410475718.6A CN105427951A (en) | 2014-09-18 | 2014-09-18 | Environment-friendly cable for 15kV variable frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410475718.6A CN105427951A (en) | 2014-09-18 | 2014-09-18 | Environment-friendly cable for 15kV variable frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105427951A true CN105427951A (en) | 2016-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410475718.6A Pending CN105427951A (en) | 2014-09-18 | 2014-09-18 | Environment-friendly cable for 15kV variable frequency motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105427951A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109903896A (en) * | 2019-01-22 | 2019-06-18 | 南洋电缆集团泰州有限公司 | A kind of harbour machinery private cable |
-
2014
- 2014-09-18 CN CN201410475718.6A patent/CN105427951A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109903896A (en) * | 2019-01-22 | 2019-06-18 | 南洋电缆集团泰州有限公司 | A kind of harbour machinery private cable |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160323 |
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| WD01 | Invention patent application deemed withdrawn after publication |