CN204423959U - A kind of medium voltage converter cable - Google Patents
A kind of medium voltage converter cable Download PDFInfo
- Publication number
- CN204423959U CN204423959U CN201520158589.8U CN201520158589U CN204423959U CN 204423959 U CN204423959 U CN 204423959U CN 201520158589 U CN201520158589 U CN 201520158589U CN 204423959 U CN204423959 U CN 204423959U
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- cable
- core
- voltage converter
- medium voltage
- pass
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Abstract
The utility model provides a kind of medium voltage converter cable, comprise cable core, cable core arranges stranded forming mutually by many master cores and Duo Gen by-pass core, master core is the passage of conveying electric current, by-pass core can be used as the neutral line or earth connection uses, cross section waterproofing rope triangular in shape is inserted, cable core wrapped separator, turnkey metal screen layer, electrostatic screen layer and cross-linked polyolefin sheath from inside to outside successively in the gap of cable core.By adopting electrostatic screen layer, cable electric field in conversion power supply process can not be leaked, the square wave that frequency converter or variable-frequency motor can be made operationally to produce and high order harmonic component control at cable inner, decrease the impact on outside precision instrument, there is less insulation dielectric loss, anti-strong electromagnetic and anti-strong electrostatic interference, and the cable core project organization of symmetry, there is lower effective capacitance, good electromagnetic compatibility can be provided, simultaneously the tensile strength of cable, water proofing property have also been obtained raising, extend useful life.
Description
Technical field
The utility model relates to electric wire field, particularly relates to a kind of medium voltage converter cable.
Background technology
The each side equipment that variable-frequency control technique comprises, as variable-frequency motor, frequency converter etc., has reached quite high level both at home and abroad.But as the stube cable between variable-frequency motor and frequency converter, i.e. frequency converter service cable is but not high in the development level of China.Current frequency converter stube cable extensively adopts crosslinked polyetylene insulated metal shielding type cable; this cable is all right in common applications; but at some special occasions; when occasion as higher in high temperature, high pressure, bad environments, needs large length connection use and EMC Requirements uses, just there will be following problem: frequency electromagnetic waves is to sophisticated electronics and electrical metering detect the interference of proterctive equipment around.The variable-frequency motor power that general industrial and mining enterprises use is all comparatively large, and the cable length connected between variable-frequency motor and variable frequency power supply is also longer, and cable is exactly operationally the effective carrier that frequency electromagnetic waves is outwards launched.Its screen of common frequency-changing cable, not through special setting, effectively can not shield electromagnetic wave, to sophisticated electronics and electrical metering detection proterctive equipment generation interference around, can reduce its precision, seriously also may cause instrument damage.
Summary of the invention
The purpose of this utility model is the defect overcoming prior art, provide a kind of shield outer signals, security performance high, can anti-external electromagnetic signal disturbing, long service life medium voltage converter cable.
The utility model is achieved in that a kind of medium voltage converter cable, comprise cable core, cable core arranges stranded forming mutually by many master cores and Duo Gen by-pass core, cross section waterproofing rope triangular in shape is inserted, described cable core wrapped separator, turnkey metal screen layer, electrostatic screen layer and cross-linked polyolefin sheath from inside to outside successively in the gap of described cable core.
Further, described master core has three, and it is by main conductor and be extruded in conductor shield outside described main conductor successively, master core insulating barrier, insulation screen, phase-splitting copper strip shielding layer form.
Further, described by-pass core has three, and it is made up of by-pass conductor and the by-pass insulating barrier be extruded in outside described by-pass conductor.
Further, described separator is made up of the overlapping wrapped multilayer of polyethylene.
Further, described turnkey metal screen layer is the overlapping lapping structure of copper strips.
Further, described waterproofing rope cross section is acute triangle.
The utility model provides a kind of medium voltage converter cable, comprise cable core, cable core arranges stranded forming mutually by many master cores and Duo Gen by-pass core, master core is the passage of conveying electric current, and by-pass core can be used as the neutral line or earth connection uses, for the normal work of frequency conversion equipment provides guarantee; Insert cross section waterproofing rope triangular in shape in the gap of described cable core, well can play waterproof effect; Described cable core wrapped separator, turnkey metal screen layer, electrostatic screen layer and cross-linked polyolefin sheath from inside to outside successively.In the utility model, by adopting electrostatic screen layer, cable electric field in conversion power supply process can not be leaked, the square wave that frequency converter or variable-frequency motor can be made operationally to produce and high order harmonic component control at cable inner, decrease the impact on outside precision instrument, there is less insulation dielectric loss, anti-strong electromagnetic and anti-strong electrostatic interference, and the cable core project organization of symmetry, there is lower effective capacitance, comparatively low transmission impedance, good electromagnetic compatibility can be provided, the tensile strength of cable simultaneously, water proofing property have also been obtained raising, extend useful life.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The medium voltage converter cable structure schematic diagram that Fig. 1 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As Fig. 1, the utility model embodiment provides a kind of medium voltage converter cable 1, comprise cable core 11, cable core 11 arranges stranded forming mutually by many master cores 111 and Duo Gen by-pass core 112, master core 111 is passages of conveying electric current, by-pass core 112 can be used as the neutral line or earth connection uses, for the normal work of frequency conversion equipment provides guarantee; Insert cross section waterproofing rope triangular in shape 12 in the gap of described cable core 11, well can play waterproof effect; Described cable core 11 wrapped separator 13, turnkey metal screen layer 14, electrostatic screen layer 15 and cross-linked polyolefin sheath 16 from inside to outside successively.In the present embodiment, by adopting electrostatic screen layer, cable electric field in conversion power supply process can not be leaked, the square wave that frequency converter or variable-frequency motor can be made operationally to produce and high order harmonic component control at cable inner, decrease the impact on outside precision instrument, there is less insulation dielectric loss, anti-strong electromagnetic and anti-strong electrostatic interference, and the cable core project organization of symmetry, there is lower effective capacitance, comparatively low transmission impedance, good electromagnetic compatibility can be provided, the tensile strength of cable simultaneously, water proofing property have also been obtained raising, extend useful life.
Further, described master core 111 has three, and it is by main conductor 113 and be extruded in conductor shield 114 outside described main conductor 113 successively, master core insulating barrier 115, insulation screen 116, phase-splitting copper strip shielding layer 117 form.Wherein screen is dredged around formation by copper wire.
Further, described by-pass core 112 has three, and it is made up of by-pass conductor 118 and the by-pass insulating barrier 110 be extruded in outside described by-pass conductor 118.
Further, described separator 13 is made up of the overlapping wrapped multilayer of polyethylene.
Further, described turnkey metal screen layer 14 is the overlapping lapping structure of copper strips.
Further, described waterproofing rope 12 cross section is acute triangle.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (6)
1. a medium voltage converter cable, it is characterized in that, comprise cable core, cable core arranges stranded forming mutually by many master cores and Duo Gen by-pass core, cross section waterproofing rope triangular in shape is inserted, described cable core wrapped separator, turnkey metal screen layer, electrostatic screen layer and cross-linked polyolefin sheath from inside to outside successively in the gap of described cable core.
2. medium voltage converter cable as claimed in claim 1, is characterized in that: described master core has three, and it is by main conductor and be extruded in conductor shield outside described main conductor successively, master core insulating barrier, insulation screen, phase-splitting copper strip shielding layer form.
3. medium voltage converter cable as claimed in claim 1, is characterized in that: described by-pass core has three, and it is made up of by-pass conductor and the by-pass insulating barrier be extruded in outside described by-pass conductor.
4. medium voltage converter cable as claimed in claim 1, is characterized in that: described separator is made up of the overlapping wrapped multilayer of polyethylene.
5. medium voltage converter cable as claimed in claim 1, is characterized in that: described turnkey metal screen layer is the overlapping lapping structure of copper strips.
6. medium voltage converter cable as claimed in claim 1, is characterized in that: described waterproofing rope cross section is acute triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520158589.8U CN204423959U (en) | 2015-03-19 | 2015-03-19 | A kind of medium voltage converter cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520158589.8U CN204423959U (en) | 2015-03-19 | 2015-03-19 | A kind of medium voltage converter cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204423959U true CN204423959U (en) | 2015-06-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520158589.8U Expired - Fee Related CN204423959U (en) | 2015-03-19 | 2015-03-19 | A kind of medium voltage converter cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204423959U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876019A (en) * | 2017-04-01 | 2017-06-20 | 中冶京诚工程技术有限公司 | Power cable |
-
2015
- 2015-03-19 CN CN201520158589.8U patent/CN204423959U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876019A (en) * | 2017-04-01 | 2017-06-20 | 中冶京诚工程技术有限公司 | Power 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20200319 |