CN201048058Y - Variable frequency cable - Google Patents
Variable frequency cable Download PDFInfo
- Publication number
- CN201048058Y CN201048058Y CNU2007200375116U CN200720037511U CN201048058Y CN 201048058 Y CN201048058 Y CN 201048058Y CN U2007200375116 U CNU2007200375116 U CN U2007200375116U CN 200720037511 U CN200720037511 U CN 200720037511U CN 201048058 Y CN201048058 Y CN 201048058Y
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- Prior art keywords
- shielding layer
- cable
- frequency
- cores
- armour
- 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
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Abstract
The utility model relates to a conversion cable, which also relates to the technical field of electric wires and cables, and includes three main cores of conductor which form a cable and wrap an inner jacket. Filling material is filled between the inner jacket and the three cores of conductor; a shielding layer and an outer jacket are arranged outside the inner jacket; a metal shielding layer is arranged between the shielding layer and the outer jacket; the metal shielding layer and the shielding layer are separated by an insulating sleeve. The metal shielding layer is additionally arranged on the utility model, thus the cable is protected along the radial direction, and the metal shielding layer completes a complementary action to electromagnetic wave shielding.
Description
Technical field
The utility model relates to technical field of electric wires and cables, refers in particular to a kind of frequency-changing cable.
Background technology
The special-purpose frequency-changing cable of general 1.8/3KV and following variable-frequency motor, adopt total shielding behind every eradication edge core stranding, structure can adopt copper wire copper strips combination shielding, copper wire braid shielded, copper strips shielding, the shielding of copper wire braiding copper strips etc., as Chinese patent 03221286.0,200520075394.3,200520075395.8, the cable of this shielding mode can anti-electromagnetic induction, imperfect earth and power line conducted interference reduce inductance, prevent that induced electromotive force is excessive.Screen had both played and had suppressed the externally effect of emission of electromagnetic wave, can be used as the passage of short circuit current again, can play the protective effect of neutral core.The deficiency that exists is that frequency-changing cable in use often is subjected to footpath outward force effect, owing to all radially mechanical protection layer is not set, cable is radially fragile in the use, and in addition, the electromagnetic interference between each phase core also can further improve.
Summary of the invention
The utility model is just in order to overcome above-mentioned deficiency; a kind of frequency-changing cable that radially is equipped with mechanical protection layer is provided; this radially protective layer on the one hand can anti-radial force; can strengthen shield effectiveness on the other hand; main innovation is to set up the radially protective layer of an armour as cable outside the screen of formations such as copper wire copper strips; specifically be achieved like this: frequency-changing cable; comprise three master cores; wrapped inner sheath behind the three core strandings; be filled with inserts between inner sheath and three cores; inner sheath is equipped with screen and oversheath outward, it is characterized in that being equipped with armour between screen and oversheath, separates with separation sleeve between described armour and screen.This armour is made by galvanized steel strip; steel-tape armouring mainly is the radially mechanical protection layer as cable; it also plays the total shielding action of additivity simultaneously; particularly steel-tape armouring and copper wire, copper strips shielding; two kinds of different shielding materials have been adopted; play certain complementation on electromagnetic wave shielding, shield effectiveness is better.
Three master cores of the utility model are made of conductor, insulating barrier, sub-shield, protecting pipe from the inside to the outside, promptly outside the power line core insulation, also be equipped with shielding, extrude sheath after every eradication edge core shielding, stranding again is because the interchangeability of lead has better electromagnetic compatibility, the electromagnetic interference that suppresses each phase power core is played a role, can offset the odd frequency in the high order harmonic component, improve the anti-interference of variable-frequency motor private cable, reduce the electromagnetic radiation in the whole built-in system.
The utility model radially is protected cable by adding armour; armour plays complementation to electromagnetic wave shielding simultaneously; by three master cores are added sub-shield and sheath, improve the anti-interference of cable again, reduced the electromagnetic radiation in the whole built-in system.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
Frequency-changing cable, three master cores are made of conductor 1, insulating barrier 2, sub-shield 3, protecting pipe 4 from the inside to the outside, wrapped inner sheath 5 behind the three core strandings, be filled with inserts 10 between inner sheath 5 and three cores, inner sheath 5 outer screen 6, separation sleeve 7, galvanized steel strip armour 8 and the oversheaths 9 of being equipped with successively.
Claims (3)
1. frequency-changing cable comprises three master cores, wrapped inner sheath behind the three core strandings, be filled with inserts between inner sheath and three cores, inner sheath is equipped with screen and oversheath outward, it is characterized in that being equipped with armour between screen and oversheath, separates with separation sleeve between described armour and screen.
2. frequency-changing cable according to claim 1 is characterized in that armour is a galvanized steel strip.
3. frequency-changing cable according to claim 1 and 2 is characterized in that three master cores are made of conductor, insulating barrier, sub-shield, protecting pipe from the inside to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200375116U CN201048058Y (en) | 2007-05-10 | 2007-05-10 | Variable frequency cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200375116U CN201048058Y (en) | 2007-05-10 | 2007-05-10 | Variable frequency cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201048058Y true CN201048058Y (en) | 2008-04-16 |
Family
ID=39300649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200375116U Expired - Fee Related CN201048058Y (en) | 2007-05-10 | 2007-05-10 | Variable frequency cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201048058Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110494A (en) * | 2011-03-22 | 2011-06-29 | 山东华凌电缆有限公司 | Cable for charging electric automobile |
-
2007
- 2007-05-10 CN CNU2007200375116U patent/CN201048058Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102110494A (en) * | 2011-03-22 | 2011-06-29 | 山东华凌电缆有限公司 | Cable for charging electric automobile |
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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: 20080416 Termination date: 20100510 |