CN204189753U - A kind of Intelligent fuse - Google Patents
A kind of Intelligent fuse Download PDFInfo
- Publication number
- CN204189753U CN204189753U CN201420291944.4U CN201420291944U CN204189753U CN 204189753 U CN204189753 U CN 204189753U CN 201420291944 U CN201420291944 U CN 201420291944U CN 204189753 U CN204189753 U CN 204189753U
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- 238000012360 testing method Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 239000000155 melt Substances 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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Abstract
The utility model discloses a kind of Intelligent fuse, the lower end triple line access of fuse, intelligent control unit is provided with in described Intelligent fuse, the lower end triple line access intelligent control unit of fuse, described intelligent control unit comprises fuse state detecting unit, for detecting fuse current detecting unit and the central control unit of electric current in fuse, the testing result of fuse state detecting unit, fuse current detecting unit is all sent to the connected central control unit of these two unit, and central control unit sends indicator according to testing result.The utility model achieves the status monitoring to the melt fuse in Intelligent fuse, and give alarm when there is status fault, judge the actual fusing time of fuse according to the electric current flowed through in fuse simultaneously, thus the situation achieved fuse may fuse carries out pre-alarm, improve the intelligent of fuse, make it have higher serviceability.
Description
Technical field
The utility model relates to a kind of fuse, is specifically related to a kind of Intelligent fuse sending status fault alarm and pre-alarm.
Background technology
Fuse one simply effective protective device.Mainly play short-circuit protection effect in circuit.Fuse is primarily of melt and insulated tube (insulating base) composition installing melt.During use, the principle of fuse utilizes electric current to flow through conductor can make conductor temp .-elevating, and after reaching the fusing point of conductor, conductor melts so open circuit protection electrical appliance and circuit are not burned.It is an accumulation of heat, so also can realize overload protection.Once melt burns will change melt.But there is not the outside display to fuse fuse failure situation and warning in current fuse temporarily.
Utility model content
The utility model object is to provide a kind of Intelligent fuse, and it achieves Real-Time Monitoring to fuse Internal fuse state and state alarm, achieves the Fault pre-warning based on current detecting simultaneously, improves the serviceability of fuse.
In order to solve these problems of the prior art, the technical scheme that the utility model provides is:
A kind of Intelligent fuse, the lower end triple line access of fuse, intelligent control unit is provided with in described Intelligent fuse, the lower end triple line access intelligent control unit of fuse, described intelligent control unit comprises fuse state detecting unit, for detecting fuse current detecting unit and the central control unit of electric current in fuse, the testing result of fuse state detecting unit, fuse current detecting unit is all sent to the connected central control unit of these two unit, and central control unit sends indicator according to testing result.
For technique scheme, utility model people also has further optimal enforcement scheme.
As optimization, the lower end triple line of fuse is by light-coupled isolation unit access intelligent control unit, the lower terminal voltage of the fuse state detecting unit cycle detection fuse in intelligent control unit, when fuse phase fuse failure, namely the corresponding lower terminal voltage of this phase fuse changes, and central control unit sends the status fault alarm of corresponding phase fuse failure according to detecting the change in voltage result obtained.
Further, the status fault alarm that central control unit sends comprises light warning output, alarm relay exports.
As optimization, fuse current detecting unit detects by the actual current I of current transformer detection through overcurrent fuse Internal fuse, central control unit compares with the load current value of fuse after testing result is carried out AD conversion digitlization again, when detect obtain rated current Is higher than fuse of real-time operating current I in fuse time, central control unit carries out over-load inverse time-lag calculating and calculates thermal capacity value compared with the thermal capacity value of setting, as the thermal capacity value I drawn
2 t then sends pre-alarm higher than when equaling the thermal capacity value set, and wherein t is actual fusing time.
Further, described central control unit carry out for the over-load inverse time-lag calculating actual fusing time t calculate comprise the strong inverse time lag calculate calculates with the extra-heavy inverse time lag, normally the inverse time lag calculates and the superpower inverse time lag calculates, wherein:
1) strong inverse time lag computing formula is
t = Ts * 9/【(I/Is)-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, and Is is the rated current of fuse;
2) computing formula is the extra-heavy inverse time lag
t = Ts * 99/【(I/Is)
2-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, and Is is the rated current of fuse;
3) normal inverse time lag computing formula is
t = Ts * 0.14/【(I/Is)
0.02-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, and Is is the rated current of fuse.
4) superpower inverse time lag computing formula is
t = Ts * 315.23/【(I/Is)
2.5-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, and Is is the rated current of fuse.
Relative to scheme of the prior art, the utility model has the advantages that:
The utility model describes a kind of Intelligent fuse, it achieves the status monitoring to the melt fuse in Intelligent fuse, and give alarm when there is status fault, judge the actual fusing time of fuse according to the electric current flowed through in fuse simultaneously, thus the situation achieved fuse may fuse carries out pre-alarm, improve the intelligent of fuse, make it have higher serviceability.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is the control principle block diagram of the utility model embodiment.
Embodiment
Below in conjunction with specific embodiment, such scheme is described further.Should be understood that these embodiments are not limited to for illustration of the utility model limit scope of the present utility model.The implementation condition adopted in embodiment can do further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in normal experiment.
embodiment:
The utility model describes a kind of Intelligent fuse, its control principle block diagram as shown in Figure 1, the lower end triple line access of fuse, intelligent control unit is provided with in described Intelligent fuse, (working power of intelligent control unit is provided by internal auxiliary power supply), the lower end triple line access intelligent control unit of fuse, described intelligent control unit comprises fuse state detecting unit, for detecting fuse current detecting unit and the central control unit of electric current in fuse, fuse state detecting unit, the testing result of fuse current detecting unit is all sent to the connected central control unit of these two unit, central control unit sends indicator according to testing result.
The lower end triple line of fuse is by light-coupled isolation unit access intelligent control unit, the lower terminal voltage of the fuse state detecting unit cycle detection fuse in intelligent control unit, when fuse phase fuse failure, namely the corresponding lower terminal voltage of this phase fuse changes, and central control unit sends the status fault alarm of corresponding phase fuse failure according to detecting the change in voltage result obtained.
The status fault alarm that central control unit sends comprises light warning output, alarm relay exports.
Fuse current detecting unit detects by the actual current I of current transformer detection through overcurrent fuse Internal fuse, central control unit compares with the load current value of fuse after testing result is carried out AD conversion digitlization again, when detect obtain rated current Is higher than fuse of real-time operating current I in fuse time, central control unit carries out over-load inverse time-lag calculating and calculates thermal capacity value compared with the thermal capacity value of setting, as the thermal capacity value I drawn
2 t then sends pre-alarm higher than when equaling the thermal capacity value set, and wherein t is actual fusing time.
Further, described central control unit carry out for the over-load inverse time-lag calculating actual fusing time t calculate comprise the strong inverse time lag calculate calculates with the extra-heavy inverse time lag, normally the inverse time lag calculates and the superpower inverse time lag calculates, wherein:
1) strong inverse time lag computing formula is
t = Ts * 9/【(I/Is)-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, and Is is the rated current of fuse;
2) computing formula is the extra-heavy inverse time lag
t = Ts * 99/【(I/Is)
2-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, and Is is the rated current of fuse;
3) normal inverse time lag computing formula is
t = Ts * 0.14/【(I/Is)
0.02-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, and Is is the rated current of fuse.
4) superpower inverse time lag computing formula is
t = Ts * 315.23/【(I/Is)
2.5-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, and Is is the rated current of fuse.
In the fuse course of work, Monitoring Data is all presented on the display unit of peripheral hardware by central control unit, be convenient to field personnel's real time inspection, Monitoring Data is sent to far-end by communication unit simultaneously, is convenient to the real-time remote monitoring of remote worker to on-the-spot volume fuse.
Above-mentioned example, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalent transformations of doing according to the utility model Spirit Essence or modification, all should be encompassed within protection range of the present utility model.
Claims (3)
1. an Intelligent fuse, the lower end triple line access of fuse, it is characterized in that, intelligent control unit is provided with in described Intelligent fuse, the lower end triple line access intelligent control unit of fuse, described intelligent control unit comprises fuse state detecting unit, for detecting fuse current detecting unit and the central control unit of electric current in fuse, the testing result of fuse state detecting unit, fuse current detecting unit is all sent to the central control unit be connected with this two unit, and central control unit sends indicator according to testing result.
2. a kind of Intelligent fuse according to claim 1, it is characterized in that, the lower end triple line of fuse is by light-coupled isolation unit access intelligent control unit, the lower terminal voltage of the fuse state detecting unit cycle detection fuse in intelligent control unit, when fuse phase fuse failure, namely the corresponding lower terminal voltage of this phase fuse changes, and central control unit sends the status fault alarm of corresponding phase fuse failure according to detecting the change in voltage result obtained.
3. a kind of Intelligent fuse according to claim 2, is characterized in that, the status fault alarm that central control unit sends comprises light warning output, alarm relay exports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420291944.4U CN204189753U (en) | 2014-06-04 | 2014-06-04 | A kind of Intelligent fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420291944.4U CN204189753U (en) | 2014-06-04 | 2014-06-04 | A kind of Intelligent fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204189753U true CN204189753U (en) | 2015-03-04 |
Family
ID=52621729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420291944.4U Expired - Lifetime CN204189753U (en) | 2014-06-04 | 2014-06-04 | A kind of Intelligent fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204189753U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985617A (en) * | 2014-06-04 | 2014-08-13 | 苏州市南光电器有限公司 | Intelligent fuse |
| CN105047501A (en) * | 2015-06-16 | 2015-11-11 | 国网安徽省电力公司阜阳供电公司 | Intelligent fuse |
| CN105304430A (en) * | 2015-10-13 | 2016-02-03 | 国家电网公司 | Drop-out fuse monitoring and alarming device for power transformer |
-
2014
- 2014-06-04 CN CN201420291944.4U patent/CN204189753U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985617A (en) * | 2014-06-04 | 2014-08-13 | 苏州市南光电器有限公司 | Intelligent fuse |
| CN103985617B (en) * | 2014-06-04 | 2016-02-17 | 苏州市南光电器有限公司 | A kind of Intelligent fuse |
| CN105047501A (en) * | 2015-06-16 | 2015-11-11 | 国网安徽省电力公司阜阳供电公司 | Intelligent fuse |
| CN105304430A (en) * | 2015-10-13 | 2016-02-03 | 国家电网公司 | Drop-out fuse monitoring and alarming device for power transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150304 |