CN106935455A - A kind of intelligent fuse - Google Patents
A kind of intelligent fuse Download PDFInfo
- Publication number
- CN106935455A CN106935455A CN201511000077.XA CN201511000077A CN106935455A CN 106935455 A CN106935455 A CN 106935455A CN 201511000077 A CN201511000077 A CN 201511000077A CN 106935455 A CN106935455 A CN 106935455A
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- CN
- China
- Prior art keywords
- fuse
- control unit
- intelligent
- unit
- alarm
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- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
- H01H85/32—Indicating lamp structurally associated with the protective device
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- Emergency Protection Circuit Devices (AREA)
- Fuses (AREA)
- Protection Of Static Devices (AREA)
Abstract
The invention discloses a kind of intelligent fuse, the power switch is located on the positive centre position of housing, display screen and alarm lamp are respectively arranged on the left side and the right side, the housing right flank is provided with alarm relay loudspeaker, and the built-in control circuit plate is located at the inside of housing；Intelligent control unit is provided with the intelligent fuse, intelligent control unit is connected with accessory power supply, the lower end three-phase line terminals of fuse access intelligent control unit, the intelligent control unit includes fuse state detection unit, fuse current detecting unit, central control unit, light warning output circuit and alarm relay output circuit, and fuse state detection unit and fuse current detecting unit are connected with central control unit.The intelligent fuse, can in time carry out circuit alarm and relay light warning to circuit, safer, and the external disturbance being subject to using separate communication unit circuit and time communication unit circuit is smaller, relatively reliable.
Description
Technical field
The present invention relates to fuse technologies field, specially a kind of intelligent fuse.
Background technology
Fuse is a kind of to be simply effectively protected electrical equipment.Mainly play short-circuit protection in circuit.The main insulation tube (insulating base) by melt and installation melt of fuse is constituted.When using, the principle of fuse is to flow through conductor using electric current to make conductor temp.-elevating, and conductor melts so disconnecting circuit protects electrical appliance and circuit not to be burned after reaching the fusing point of conductor.It is an accumulation of heat, so overload protection can also be realized.Once melt burns will change melt.But do not occur the outside display and alarm to fuse fuse failure situation in current fuse temporarily, additionally, communication unit circuit and time communication unit circuit of the telecommunication circuit of existing RCCB all including non-isolated.Because the communication unit circuit for including and time communication unit circuit are non-isolation types, the antijamming capability of this telecommunication circuit is weaker, therefore, when the input signal by external signal interference is received, their output signal can also be interfered.Even more serious, if input signal is subject to outside forceful electric power interference, it is likely to result in the damage of whole communication unit circuit and time communication unit circuit.The antijamming capability and functional reliability for causing RCCB are very poor.
The content of the invention
It is an object of the invention to provide a kind of intelligent fuse, to solve the problems, such as to be proposed in above-mentioned background technology.
To achieve the above object, the present invention provides following technical scheme：A kind of intelligent fuse, including housing, lower end three-phase line terminals, upper end three-phase line terminals, power switch, display screen, alarm lamp, alarm relay loudspeaker and built-in control circuit plate, the downside end cap and upside end cap of the housing are respectively equipped with four lower end three-phase line terminals and upper end three-phase line terminals, power switch is located on the positive centre position of housing, it is respectively arranged on the left side and the right side display screen and alarm lamp, the housing right flank is provided with alarm relay loudspeaker, and the built-in control circuit plate is located at the inside of housing.
Intelligent control unit is provided with the intelligent fuse, intelligent control unit is connected with accessory power supply, the lower end three-phase line terminals of fuse access intelligent control unit, the intelligent control unit includes fuse state detection unit, fuse current detecting unit, central control unit, light warning output circuit and alarm relay output circuit, and fuse state detection unit and fuse current detecting unit are connected with central control unit；The central control unit is bi-directionally connected with communication unit and time communication unit respectively, for detecting that the voltage change result for obtaining sends the status fault alarm of corresponding phase fuse failure；The communication unit is bi-directionally connected with driving power supply protector; the driving power supply protector output end cut-in relay; the relay output end accesses electronic thruster, and the fuse state detection unit and fuse current detecting unit are connected with the fuse.
Preferably, it is equipped with transparent openable jacket on the outside of the display screen and alarm lamp.
Preferably, the central control unit is respectively the built-in circuit of alarm lamp and alarm relay loudspeaker by being connected output, light warning output circuit and alarm relay output circuit with light warning output circuit, alarm relay output circuit.
Compared with prior art, the beneficial effects of the invention are as follows：The intelligent fuse, can in time carry out circuit alarm and relay light warning to circuit, safer, and the external disturbance being subject to using separate communication unit circuit and time communication unit circuit is smaller, relatively reliable.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is built-in control circuit plate principle modules figure of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
The representation for referring to intelligent fuse is intended to 1, a kind of intelligent fuse, including housing 1, lower end three-phase line terminals 2, upper end three-phase line terminals 3, power switch 4, display screen 5, alarm lamp 6, alarm relay loudspeaker 7 and built-in control circuit plate（It is not drawn into figure）The downside end cap and upside end cap of housing 1 are respectively equipped with four lower end three-phase line terminals 2 and upper end three-phase line terminals 3, power switch 4 is located on the positive centre position of housing 1, it is respectively arranged on the left side and the right side display screen 5 and alarm lamp 6, the right flank of housing 1 is provided with alarm relay loudspeaker 7, the outside of display screen 5 and alarm lamp 6 be equipped with it is transparent open jacket, built-in control circuit plate is located at the inside of housing 1.
Refering to Fig. 2, intelligent control unit 82 is provided with intelligent fuse, the working power of intelligent control unit 82 is provided by internal auxiliary power supply 83, the lower end three-phase line terminals 2 of fuse access intelligent control unit 82, and intelligent control unit 82 includes fuse state detection unit 822, fuse current detecting unit 823 and central control unit 824 for detecting electric current in fuse.Wherein, fuse current detecting unit 823 is a current transformer, fuse state detection unit 822 is a voltage transformer, fuse current detecting unit 823 and the testing result of fuse state detection unit 822 are sent to central control unit 824, central control unit 824 sends indicator according to testing result, the lower terminal voltage of the cycle detection fuse of fuse state detection unit 822, when fuse phase fuse failure, the terminal voltage lower accordingly of the phase fuse is to change, central control unit 824 sends the status fault alarm of corresponding phase fuse failure according to the voltage change result that detection is obtained.
Central control unit 824 is bi-directionally connected with communication unit 84 and time communication unit 85 respectively; realize communication transfer; communication unit 84 is bi-directionally connected with driving power supply protector 86, the output end cut-in relay 87 of driving power supply protector 86, and the output end of relay 87 accesses electronic thruster 88.When fuse state detection unit 822 and fuse current detecting unit 823 are detected as abnormal conditions, electronic thruster 88 can realize the function of electric isolating switch.
Communication unit 84 can be according to distant signal for PLC or DSP control systems, after breaker disconnection, control electronic thruster 88 that breaker unit is integrally extrapolated, separate conductive plug, realize the function of electronic isolation, open circuit is capable of achieving in the case of the fuse link 81 that do not fuse, it is to avoid change the process of fuse link 81.
Fuse state detection unit 822 and fuse current detecting unit 823 are connected with fuse 81, the lower end three-phase line terminals 2 of fuse are by light-coupled isolation unit access intelligent control unit 82, the lower terminal voltage of the cycle detection fuse 1 of fuse state detection unit 822 in intelligent control unit 82, the terminal voltage lower accordingly of the phase fuse is to change, and central control unit 824 sends the status fault alarm of corresponding phase fuse failure according to the voltage change result that detection is obtained.
The status fault alarm that central control unit 824 is sent includes light warning output circuit 825, alarm relay output circuit 826, the detection of fuse current detecting unit 823 detection is detected through the actual current I of overcurrent fuse Internal fuse by current transformer, after testing result is AD converted digitlization by central control unit 824, the load current value with fuse is compared again, when detection obtain real-time operating current I in fuse higher than fuse rated current Is when, central control unit 824 carry out over-load inverse time-lag calculate and calculate thermal capacity value with setting thermal capacity value compared with, pre-alarm is then sent when thermal capacity values of the thermal capacity value I2t for drawing optionally greater than setting, wherein t is actual fusing time.
More than; preferably specific embodiment only of the invention; but protection scope of the present invention is not limited thereto; any one skilled in the art the invention discloses technical scope in; technology according to the present invention scheme and its inventive concept are subject to equivalent or change, should all be included within the scope of the present invention.
Claims (6)
1. a kind of intelligent fuse, including housing, lower end three-phase line terminals, upper end three-phase line terminals, power switch, display screen, alarm lamp, alarm relay loudspeaker and built-in control circuit plate, it is characterised in that：The downside end cap and upside end cap of the housing are respectively equipped with four lower end three-phase line terminals and upper end three-phase line terminals, power switch is located on the positive centre position of housing, it is respectively arranged on the left side and the right side display screen and alarm lamp, the housing right flank is provided with alarm relay loudspeaker, and the built-in control circuit plate is located at the inside of housing；
Intelligent control unit is provided with the intelligent fuse, intelligent control unit is connected with accessory power supply, the lower end three-phase line terminals of fuse access intelligent control unit, the intelligent control unit includes fuse state detection unit, fuse current detecting unit, central control unit, light warning output circuit and alarm relay output circuit, and fuse state detection unit and fuse current detecting unit are connected with central control unit；The central control unit is bi-directionally connected with communication unit and time communication unit respectively, for detecting that the voltage change result for obtaining sends the status fault alarm of corresponding phase fuse failure；The communication unit is bi-directionally connected with driving power supply protector; the driving power supply protector output end cut-in relay; the relay output end accesses electronic thruster, and the fuse state detection unit and fuse current detecting unit are connected with the fuse.
2. a kind of intelligent fuse according to claim 1, it is characterised in that：Transparent openable jacket is equipped with the outside of the display screen and alarm lamp.
3. a kind of intelligent fuse according to claim 1, it is characterised in that：The central control unit is connected output circuit by being exported with light warning output circuit, alarm relay, and the light warning output circuit and alarm relay output circuit are respectively the built-in circuit of alarm lamp and alarm relay loudspeaker.
4. a kind of intelligent fuse according to claim 1, it is characterised in that：The fuse current detecting unit is a current transformer.
5. a kind of intelligent fuse according to claim 1, it is characterised in that：The fuse state detection unit is a voltage transformer.
6. a kind of intelligent fuse according to claim 1, it is characterised in that：The lower end three-phase line terminals of the fuse access the intelligent control unit by light-coupled isolation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000077.XA CN106935455A (en) | 2015-12-29 | 2015-12-29 | A kind of intelligent fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000077.XA CN106935455A (en) | 2015-12-29 | 2015-12-29 | A kind of intelligent fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106935455A true CN106935455A (en) | 2017-07-07 |
Family
ID=59457126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511000077.XA Pending CN106935455A (en) | 2015-12-29 | 2015-12-29 | A kind of intelligent fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106935455A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110174608A (en) * | 2019-05-08 | 2019-08-27 | 重庆全飞汽车零部件有限公司 | A kind of smart circuit detection device |
| CN110265967A (en) * | 2019-05-07 | 2019-09-20 | 重庆全营紧固件有限公司 | A kind of intelligence power-off protection apparatus |
-
2015
- 2015-12-29 CN CN201511000077.XA patent/CN106935455A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265967A (en) * | 2019-05-07 | 2019-09-20 | 重庆全营紧固件有限公司 | A kind of intelligence power-off protection apparatus |
| CN110174608A (en) * | 2019-05-08 | 2019-08-27 | 重庆全飞汽车零部件有限公司 | A kind of smart circuit detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170707 |
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| WD01 | Invention patent application deemed withdrawn after publication |