CN202563966U - Low voltage cable special for frequency converter - Google Patents
Low voltage cable special for frequency converter Download PDFInfo
- Publication number
- CN202563966U CN202563966U CN2012201858660U CN201220185866U CN202563966U CN 202563966 U CN202563966 U CN 202563966U CN 2012201858660 U CN2012201858660 U CN 2012201858660U CN 201220185866 U CN201220185866 U CN 201220185866U CN 202563966 U CN202563966 U CN 202563966U
- Authority
- CN
- China
- Prior art keywords
- cable
- core
- wire cores
- frequency converter
- low voltage
- 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 discloses a low voltage cable special for a frequency converter. Main wire cores and neutral wire cores are hinged to form a cable core. Fillers are arranged in a clearance and an outer side of the cable core. An inside liner, an overall shielding layer and a sheath layer are sequentially arranged outside the fillers on the outer side of the cable core. The number of the main wire cores and the number of the neutral wire cores are both three, and the three main wire cores and the three neutral wire cores are symmetrically arranged and hinged. The structure of the low voltage cable special for the frequency converter guarantees that the cable has excellent electrostatic coupling resistant and electro-magnetic induction resistant abilities when the cable is used, service life of the cable is obviously prolonged, safe reliability of the cable is significantly improved, and meanwhile costs due to the fact that a user changes the cable frequently are reduced, so the low voltage cable special for the frequency converter has good social efficiency and economic benefit.
Description
Technical field
The utility model relates to a kind of cable, is connected the symmetry shielding private cable of usefulness between especially a kind of variable-frequency motor and variable frequency power supply.
Background technology
At present, the equipment of the each side that domestic and international variable-frequency control technique comprises is comparative maturity, but the stube cable between variable-frequency motor and the variable frequency power supply does not but obtain enough attention.Usually adopted the power cable of general four-core in the past, this cable is by three master core and neutral core stranding cores that the cross section is less that the cross section is bigger, between the master core and and neutral core between fill filler, extrude sheath again.This cable is nonreactive Electrostatic Coupling and anti-electromagnetic induction ability in use, makes cable that very short problem of puncture, useful life arranged within a short period of time.
The utility model content
It is good that the utility model technical problem to be solved provides a kind of shielding properties, and fail safe is good, the special-purpose low-voltage cable of the frequency converter of long service life.
The utility model relates to the special-purpose low-voltage cable of a kind of frequency converter; Be twisted into cable core by master core and neutral core; Gap and outside at cable core are provided with filler; Outside the outside filler of cable core, set gradually inner covering, total screen and restrictive coating, said master core and neutral core respectively have three, and three master cores and three neutral core symmetric arrays are stranded.
Said master core is by conductor and be successively set on conductor outer insulating barrier and sub-shield and form.
The structure of the utility model has ensured that cable in use possesses excellent antistatic coupling and anti-electromagnetic induction ability; Make be able to significantly improve the useful life of cable; Thereby significantly improved the security reliability of cable; The expense that has reduced user's frequent change cable simultaneously and taken place has good society, economic benefit.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with instance the utility model is further described.
As shown in Figure 1, the utility model is by three master cores and three stranded cable cores that form of neutral core 4 symmetric arrays, is provided with filler 5 in the gap and the outside of cable core, outside filler, sets gradually inner covering 6, total screen 7 and restrictive coating 8.
The conductor 1 of master core adopts has the stranded steel structure that 19 filament diameters are 2.56mm; Neutral core 4 adopts has the stranded steel structure that 7 filament diameters are 1.7mm; Insulating barrier 2 adopts crosslinked polyethylene, and sub-shield 3 adopts copper cover aluminum wire and aluminum alloy strip combination shielding with total screen 7, and filler 5 adopts the PP rope; Inner covering 6 adopts the PP band, and sheath 8 adopts polyvinyl chloride to form.This cable possesses excellent shielding properties, can reach antistatic coupling, electromagnetic induction, electric wave and the power line conducted interference property of height.
The utility model adopts three bigger master core and three less neutral core symmetric arrays in cross section in cross section to be twisted into cable core, after filling filler, increases inner covering and total screen again.Compare with common power cable and to have the exchange effect, can partly suppress to disturb; When circuit high order occurred and dives the ripple current component, screen electric current summation was zero, does not produce to external world and disturbs.This construction of cable has lower and uniformly just (contrary) preface and zero sequence impedance, and the resistance value of screen under the zero sequence operating state is more much lower than common cable, helps the safe operation of cable and other relevant device.Shielding adopts metal wire knitted and/or the wrapped combination of metal tape to shield (for improving cost performance, preferential employing copper cover aluminum wire and the aluminum alloy strip recommended), can effectively suppress electromagnetic radiation, antistatic coupling, electromagnetic induction etc.This cable possesses excellent shielding properties, can reach antistatic coupling, electromagnetic induction, electric wave and power line conducted interference, is a kind of variable-frequency motor symmetry shielding private cable.
The concrete application approach of the utility model is a lot; The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement, these improve the protection range that also should be regarded as the utility model.
Claims (2)
1. the special-purpose low-voltage cable of a frequency converter; Be twisted into cable core by master core and neutral core (4); Gap and outside at cable core are provided with filler (5), outside the outside filler of cable core, set gradually inner covering (6), total screen (7) and restrictive coating (8), it is characterized in that; Said master core and neutral core (4) respectively have three, and three master cores and three neutral cores (4) symmetric arrays are stranded.
2. the special-purpose low-voltage cable of frequency converter according to claim 1, said master core are by conductor (1) and be successively set on conductor outer insulating barrier (2) and sub-shield (3) and form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201858660U CN202563966U (en) | 2012-04-27 | 2012-04-27 | Low voltage cable special for frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201858660U CN202563966U (en) | 2012-04-27 | 2012-04-27 | Low voltage cable special for frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202563966U true CN202563966U (en) | 2012-11-28 |
Family
ID=47213594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201858660U Expired - Fee Related CN202563966U (en) | 2012-04-27 | 2012-04-27 | Low voltage cable special for frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202563966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623099A (en) * | 2012-04-27 | 2012-08-01 | 无锡市群星线缆有限公司 | Low-voltage cable special for frequency converter |
-
2012
- 2012-04-27 CN CN2012201858660U patent/CN202563966U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623099A (en) * | 2012-04-27 | 2012-08-01 | 无锡市群星线缆有限公司 | Low-voltage cable special for frequency converter |
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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: 20121128 Termination date: 20140427 |