CN2248392Y - High-voltage current-limiting fuse for protection of motor - Google Patents
High-voltage current-limiting fuse for protection of motor Download PDFInfo
- Publication number
- CN2248392Y CN2248392Y CN 95245210 CN95245210U CN2248392Y CN 2248392 Y CN2248392 Y CN 2248392Y CN 95245210 CN95245210 CN 95245210 CN 95245210 U CN95245210 U CN 95245210U CN 2248392 Y CN2248392 Y CN 2248392Y
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- China
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- cap
- melt
- narrow neck
- fuse
- current
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- Expired - Fee Related
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Abstract
The utility model relates to a high-voltage current-limiting fuse for protection of a motor, which comprises a fusion tube whose both ends are provided with inner caps, a striker is arranged in the inner cap, a fuse element which is arranged between two inner caps is made from variable cross-section pure silver into corrugation. The utility model has the advantages of stable current characteristic (error only above or below 10%), significant current limitation characteristic, small temperature rising, and low power consumption.
Description
The utility model relates to a kind of high voltage protection device, and particularly a kind of motor protection high-voltage and current-limitation fuse can be used as the overload or short-circuit protection of high-tension motor and other power equipment.
At present, used high-voltage and current-limitation fuse basic structure is made up of porcelain tube, pillar, silver-colored band and quartz sand, copper cap etc., be exclusively used in 10KV motor protection high-voltage and current-limitation fuse, owing to complex process, detection means require height, thereby still belong to blank in China at present; Abroad, produce the producer of 10KV motor protection with high-voltage and current-limitation fuse though have, since the defective of configuration aspects, the deficiency that still the life period current characteristics is poor, current limiting characteristic are low, temperature rise is big, power consumption is big.
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, has proposed a kind of 10KV of being exclusively used in motor protection high-voltage and current-limitation fuse, has current characteristics stable (error only ± 10%), current limiting characteristic are remarkable, temperature rise is little, low in energy consumption characteristics.
Fig. 1 is a structure principle chart of the present utility model.
Fig. 2 is a melt structure schematic diagram of the present utility model.
Below in conjunction with accompanying drawing structural principle of the present utility model and operation principle are done Detailed explanation.
With reference to Fig. 1, the utility model comprises a fusion tube 1, be connected with in melt 2, one ends between the cap 7 in the cap 7, two in the two ends of fusion tube 1 dispose and dispose striker 6 in the cap 7, dispose gunpowder in the striker 6, gunpowder is connected with tungsten filament 5, and the other end of tungsten filament 5 is connected with constantan wire 4, and the other end of constantan wire 4 is connected with cap 7 in the other end, be filled with quartz sand 3 in the fusion tube 1, dispose outer cap 8 on the interior cap 7.
With reference to Fig. 2, melt 2 is variable load faces, the circular-arc narrow neck that promptly whenever has been spaced a distance, and spacing distance is L
1, the melt width is b, narrow neck place width is b
1, narrow neck arc radius is r, angle is α.
Assembly relation of the present utility model is: (the narrow neck of melt length is counted n=38, L to become the fine silver melt of variable cross-section to make corrugated punching out
1=16.5 ± 0.4 millimeter, melt width b=3.96 millimeter, b
1=0.762 millimeter, radius r=0.25 millimeter, angle [alpha]=60 °) on melt 2 with low-melting alloy, be used for producing " M " effect, to improve the interrupting performance of low overload fault electric current, reduce the temperature rise and the power consumption of fuse, the melt point is welded on the interior cap 7 at fusion tube 1 two ends, again the striker 6 that has installed is placed on the interior cap 7 by pad, constantan wire 4 on the striker 6 is connected in the other end on the connector on the cap 7, outer cap 8 is depressed and interior cap 7 formation interference fit, cap 7 in striker 6 just is stabilized in like this, between pad and the outer cap 8, at last highly purified quartz sand 3 is put in the fusion tube 1 by certain particle proportioning, after enriching the outer cap 8 of the other end is depressed.All parts by weld, compress, filling, interference fit form integral body.
Operation principle of the present utility model is that fuse is sealed in the circuit of protected electrical equipment; when circuit generation overload or short trouble, electric current increases in the circuit, makes melt 2 heatings in the fuse; when temperature was elevated to the fusing point of melt 2, melt 2 fusing divided deenergizing.Simultaneously supply voltage be added in striker 6 and the constantan wire 4 that is attached thereto on; make enough big electric current light gunpowder and produce blast by tungsten filament 5 heatings; the promotion impact tip is worn and is hit the outer cap 8 of fuse; and with the trip gear of 1～3 joule the direct pull switch of energy; realize the interlock of three-phase circuit; thereby prevent the single phasing of circuit, reach the purpose of protection electrical equipment.Melt is designed to corrugated can solve the problem that the motor frequent operation causes that melt expands with heat and contract with cold, pulled, and has improved life-span and fail safe.
Because this high-voltage and current-limitation fuse breaking capacity height, operate time is fast, metering function is remarkable, can before short circuit current no show peak value, just circuit be cut off rapidly (5ms), thereby the numerical value of river bend system short circuit current, reduction is to the requirement of moving, the thermal stability of electric equipment in the electrical network, economical with materials and investment greatly.
The utility model can adapt to China 10KV voltage and directly enter user's powering mode, satisfies the needs of 10KV high-tension motor and the development of " F-C " loop cabinet, and its specified breaking capacity is 40KV, time-current chracteristic is stablized (error only ± 10%), current limiting characteristic are remarkable, and temperature rise is little, and are low in energy consumption.This product can be used for indoor, exchanges the electric power system of 50HZ, rated voltage 10KV, maximum operating voltage 12KV.Rated current is from ten kinds of specifications of 25A～200A.Overall dimension is: 76 * 600 millimeters of φ.
Claims (5)
1; the motor protection high-voltage and current-limitation fuse; comprise a fusion tube (1); the two ends of fusion tube (1) dispose interior cap (7); be connected with melt (2) between the cap (7) in two; dispose striker (6) in the cap (7) in one end; striker disposes gunpowder in (6); gunpowder is connected with tungsten filament (5); the other end of tungsten filament (5) is connected with constantan wire (4), and the other end of constantan wire (4) is connected with cap (7) in the other end, is filled with quartz sand (3) in the fusion tube (1); dispose outer cap (8) on the interior cap (7); feature of the present utility model is, said melt (2) is the corrugated body of being made by the fine silver of variable cross-section, and the narrow neck of a circular arc whenever has been spaced a distance.
2, fuse according to claim 1 is characterized in that, said circular-arc narrow neck has 38.
According to claim 1,2 described fuses, it is characterized in that 3, the spacing distance of said circular-arc narrow neck is 16.5 ± 0.4 millimeters, narrow neck place width is 0.762 millimeter.
According to claim 1,2 described fuses, it is characterized in that 4, the round neck radius of said circular-arc narrow neck is 0.25 millimeter.Angle is 60 °.
5, fuse according to claim 1 is characterized in that, the width of said melt is 3.96 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95245210 CN2248392Y (en) | 1995-08-25 | 1995-08-25 | High-voltage current-limiting fuse for protection of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95245210 CN2248392Y (en) | 1995-08-25 | 1995-08-25 | High-voltage current-limiting fuse for protection of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2248392Y true CN2248392Y (en) | 1997-02-26 |
Family
ID=33885406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95245210 Expired - Fee Related CN2248392Y (en) | 1995-08-25 | 1995-08-25 | High-voltage current-limiting fuse for protection of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2248392Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103377851A (en) * | 2012-04-25 | 2013-10-30 | 旭程电子(深圳)有限公司 | Constant temperature protector |
| CN106463314A (en) * | 2014-05-28 | 2017-02-22 | 库珀技术公司 | Compact high voltage power fuse and methods of manufacture |
| CN107615440A (en) * | 2015-06-04 | 2018-01-19 | 迪睿合株式会社 | Fuse element, fuse-wire device, protection element, short-circuit component, switching device |
-
1995
- 1995-08-25 CN CN 95245210 patent/CN2248392Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103377851A (en) * | 2012-04-25 | 2013-10-30 | 旭程电子(深圳)有限公司 | Constant temperature protector |
| CN103377851B (en) * | 2012-04-25 | 2015-09-30 | 旭程电子(深圳)有限公司 | Constant temperature protector |
| CN106463314A (en) * | 2014-05-28 | 2017-02-22 | 库珀技术公司 | Compact high voltage power fuse and methods of manufacture |
| CN106463314B (en) * | 2014-05-28 | 2019-02-15 | 库珀技术公司 | Gamut power fuse |
| CN107615440A (en) * | 2015-06-04 | 2018-01-19 | 迪睿合株式会社 | Fuse element, fuse-wire device, protection element, short-circuit component, switching device |
| CN107615440B (en) * | 2015-06-04 | 2019-11-01 | 迪睿合株式会社 | Fuse element, fuse-wire device, protection element, short-circuit component, switching element |
| US10593495B2 (en) | 2015-06-04 | 2020-03-17 | Dexerials Corporation | Fuse element, fuse device, protective device, short-circuit device, switching device |
| TWI714595B (en) * | 2015-06-04 | 2021-01-01 | 日商迪睿合股份有限公司 | Fuse unit, fuse element, protection element, short circuit element, switching element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |