CN2845116Y - Shielded cable for frequency control of motor working below 35 KV - Google Patents
Shielded cable for frequency control of motor working below 35 KV Download PDFInfo
- Publication number
- CN2845116Y CN2845116Y CN 200520046780 CN200520046780U CN2845116Y CN 2845116 Y CN2845116 Y CN 2845116Y CN 200520046780 CN200520046780 CN 200520046780 CN 200520046780 U CN200520046780 U CN 200520046780U CN 2845116 Y CN2845116 Y CN 2845116Y
- Authority
- CN
- China
- Prior art keywords
- cable core
- cable
- utility
- oversheath
- model
- 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
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 230000004888 barrier function Effects 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 4
- 230000005855 radiation Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
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- Insulated Conductors (AREA)
Abstract
The utility model relates to a shielded power cable for a frequency-conversion electrical machine of 35KV normal voltage and less than 35KV, which comprises a cable core and an oversheath, wherein a split-phase conductive body and an insulating layer thereof are arranged in the cable core. An inner shielding layer is arranged between the split-phase conductive body and the insulating layer, and an insulating shielding layer, a composite shielding layer and a split-phase isolating layer are coated outside the insulating layer in turn. An inner sheath and a centralized shielding layer are coated between the cable core and the oversheath orderly. Because the utility model is provided with various shielding layers, the occurrence and external radiation of higher harmonic in operation are obviously reduced, the safety of the utility model in the operation is enhanced, service life is extended and electromagnetic pollution to environment is also reduced.
Description
Technical field
The utility model relates to a kind of power cable, and especially a kind of variable-frequency motor is with shielding power cable.
Background technology
The cable that variable-frequency motor is used often is in the high frequency running status, phase difference is bigger, existing rated voltage 35KV and following variable-frequency motor are with shielding power cable, because voltage is higher, high order harmonic component takes place comparatively obvious, has strengthened unbalance in phase, therefore adopt common high-tension cable because its shielding properties is not good enough, cause the cable heating, even may cause the puncture of cable, the conduction of high order harmonic component and radiation can produce electromagnetic pollution to environment in addition.
Summary of the invention
In order to solve the problem that is produced when existing common high-tension cable is used for 35KV and following variable-frequency motor, the utility model provides a kind of rated voltage 35KV and following variable-frequency motor shielding power cable with good function of shielding, Electro Magnetic Compatibility is good, the time can reduce the generation of high order harmonic component in operation, alleviate to the infringement of cable with to the pollution of environment.
Rated voltage 35KV that the utility model provides and following variable-frequency motor comprise cable core (11) and oversheath (10) with the shielding power cable, have branch phase conductor (1) and insulating barrier (3) thereof in the cable core (11), divide between phase conductor (1) and the insulating barrier (3) and be provided with internal shield (2), coated insulation screen (4), composite shielding layer (5) and phase-splitting separator (7) successively outside insulating barrier (3) coat inner sheath (8) and turnkey screen (9) successively between cable core (11) and oversheath (10).
The beneficial effects of the utility model are: the utility model is owing to adopted internal shield (2), insulation screen (4), composite shielding layer multiple shielding measures such as (5) outside a minute phase conductor (1), between cable core (11) and oversheath (10), be provided with turnkey screen (9), obviously reduced the be in operation generation of high order harmonic component and of the utility model to external radiation, improve the operating fail safe of cable, increase the service life, also reduced electromagnetic pollution environment.
Description of drawings
Fig. 1 is a cross sectional representation of the present utility model.
In Fig. 1,1. minute phase conductor, 2. internal shield, 3. insulating barrier, 4. insulation screen, 5. composite shielding layer, 6. filler, 7. phase-splitting separator, 8. inner sheath, 9. turnkey screen, 10. oversheath, 11. cable cores.
Embodiment
In Fig. 1, divide phase conductor (1) to adopt oxygen-free copper bar to make, internal shield (2) and insulating barrier (4) adopt semi-conductive shielding material to extrude and form, insulating barrier (3) adopts crosslinked polyetylene insulated level material to make, composite shielding layer (5) employing copper wire is thin, and copper strips is wrapped to form around adding, phase-splitting separator (7) adopts low density polyethylene (LDPE) sheath level CABLE MATERIALS to make, be covered to complete and add filler (6) back stranded cable at the three-phase of cable and make cable core (11), extrude inner covering (8) with polyethylene sheath material again, dredging with copper wire after adding that copper strips is wrapped and making turnkey screen (9), adopt cable jacket material to make oversheath (10) at last.
Claims (1)
1, a kind of rated voltage 35KV and following variable-frequency motor are with shielding power cable, comprise cable core (11) and oversheath (10), have branch phase conductor (1) and insulating barrier (3) thereof in the cable core (11), it is characterized in that being provided with internal shield (2) between branch phase conductor (1) and the insulating barrier (3), coated insulation screen (4), composite shielding layer (5) and phase-splitting separator (7) successively outside insulating barrier (3) coat inner sheath (8) and turnkey screen (9) successively between cable core (11) and oversheath (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046780 CN2845116Y (en) | 2005-11-20 | 2005-11-20 | Shielded cable for frequency control of motor working below 35 KV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046780 CN2845116Y (en) | 2005-11-20 | 2005-11-20 | Shielded cable for frequency control of motor working below 35 KV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2845116Y true CN2845116Y (en) | 2006-12-06 |
Family
ID=37487060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520046780 Expired - Fee Related CN2845116Y (en) | 2005-11-20 | 2005-11-20 | Shielded cable for frequency control of motor working below 35 KV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2845116Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157225A (en) * | 2011-03-25 | 2011-08-17 | 天津市津特线缆有限责任公司 | Special cable for variable frequency motor and manufacture method thereof |
| CN102184761A (en) * | 2010-05-28 | 2011-09-14 | 湖南金杯电缆有限公司 | Mouse-proof, termite-proof, high-antiflaming, fireproof and environment-friendly concentric conductor cable |
-
2005
- 2005-11-20 CN CN 200520046780 patent/CN2845116Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184761A (en) * | 2010-05-28 | 2011-09-14 | 湖南金杯电缆有限公司 | Mouse-proof, termite-proof, high-antiflaming, fireproof and environment-friendly concentric conductor cable |
| CN102184761B (en) * | 2010-05-28 | 2014-07-09 | 湖南金杯电缆有限公司 | Mouse-proof, termite-proof, high-antiflaming, fireproof and environment-friendly concentric conductor cable |
| CN102157225A (en) * | 2011-03-25 | 2011-08-17 | 天津市津特线缆有限责任公司 | Special cable for variable frequency motor and manufacture method thereof |
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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: 20061206 Termination date: 20131120 |