CN205193203U - Earth leakage detection device - Google Patents
Earth leakage detection device Download PDFInfo
- Publication number
- CN205193203U CN205193203U CN201521031852.3U CN201521031852U CN205193203U CN 205193203 U CN205193203 U CN 205193203U CN 201521031852 U CN201521031852 U CN 201521031852U CN 205193203 U CN205193203 U CN 205193203U
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- China
- Prior art keywords
- phase
- transmission cable
- detection device
- earth detector
- voltage
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- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 230000005611 electricity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides an earth leakage detection device, include: a plurality of voltage detecting equipment, every voltage detecting equipment connect respectively at three -sphase four -wire system transmission lines one of them get along with between the ground wire for detect the phase voltage of each looks of transmission lines, the treater is connected with every voltage detecting equipment for it sends the suggestion instruction when predetermineeing the threshold value to be greater than in the drop -out value of the phase voltage of one of them looks of transmission lines, the suggestion device is connected with the treater for send standby signal according to the suggestion instruction, use the technical scheme of the utility model earth leakage detection device, realized seeking the trouble looks that take place the electric leakage fast when the electric leakage trouble is taken place mutually to three -sphase four -wire system power transmission circuit a certain, has solved current power transmission circuit and has appeared being difficult to seek the technical problem of electric leakage trouble looks after the electric leakage accident.
Description
Technical field
The utility model relates to power equipment maintaining equipment technical field, in particular to a kind of earth detector.
Background technology
The three-phase four-wire system power transmission lines of commercial power often there will be electric leakage accident; existing three-phase four-wire system leakage switch only can play leakage protection; and leak current fault phase cannot be shown, when after generation leak current fault, it is very difficult mutually that maintenance personal searches leak current fault.
Be difficult to the technical matters of searching leak current fault phase after there is electric leakage accident for existing power transmission lines, not yet propose effective solution at present.
Utility model content
Fundamental purpose of the present utility model is to provide a kind of earth detector, is difficult to search the technical matters of leak current fault phase to solve after electric leakage accident appears in existing power transmission lines.
To achieve these goals, according to an aspect of the present utility model, provide a kind of earth detector, comprise: multiple voltage detection device, each voltage detection device is connected to wherein between a phase and ground line of three-phase four-wire system transmission cable, for the phase voltage of each phase of sense transmission line cable; Processor, is connected with each voltage detection device, sends hint instructions when the drop-out value for the wherein phase voltage of a phase at transmission cable is greater than predetermined threshold value; Suggestion device, is connected with processor, for sending cue according to hint instructions.
Further, voltage detection device is provided with three.
Further, earth detector also comprises: multiple current detecting equipment, each current detecting equipment is connected in a wherein phase of transmission cable, for the phase current of sense transmission line cable, wherein, processor is connected with each current detecting equipment respectively, sends hint instructions when the phase current for the wherein phase at transmission cable is greater than predetermined threshold value.
Further, processor sends hint instructions when the drop-out value of the wherein phase voltage of a phase of transmission cable is greater than 4V.
Further, processor sends hint instructions when the phase current of a wherein phase of transmission cable is greater than 800mA.
Further, processor sends hint instructions when the drop-out value of the wherein phase voltage of a phase of transmission cable is greater than 4V and phase current is greater than 800mA.
Further, suggestion device is luminaire.
Further, luminaire is LED.
Further, suggestion device is the equipment of raising one's voice.
Further, the equipment of raising one's voice is hummer.
The earth detector of application the technical solution of the utility model, by arranging the phase voltage of each phase of a voltage detection device sense transmission line cable between each phase and ground line of three-phase four-wire system transmission cable respectively, each voltage detection device is connected with processor respectively, this processor sends hint instructions when the drop-out value of the wherein phase voltage of a phase of transmission cable is greater than predetermined threshold value to suggestion device, and suggestion device receives this hint instructions and sends cue.Thus realize the fault phase that fast finding leaks electricity to generation when a certain leak current fault of generation mutually of three-phase four-wire system power transmission lines, solve the technical matters being difficult to search leak current fault phase after electric leakage accident appears in existing power transmission lines.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to the optional earth detector of the utility model embodiment.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
10, voltage detection device; 20, processor; 30, suggestion device; 40, current detecting equipment.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
According to the earth detector of the utility model embodiment, as shown in Figure 1, comprise: multiple voltage detection device 10, processor 20 and suggestion device 30, each voltage detection device 10 is connected to wherein between a phase and ground line of three-phase four-wire system transmission cable, for the phase voltage of each phase of sense transmission line cable; Processor 20 is connected with each voltage detection device 10, sends hint instructions when the drop-out value for the wherein phase voltage of a phase at transmission cable is greater than predetermined threshold value; Suggestion device 30 is connected with processor 20, for sending cue according to this hint instructions.
The earth detector of application the technical solution of the utility model, by arranging the phase voltage of each phase of a voltage detection device 10 sense transmission line cable between each phase and ground line of three-phase four-wire system transmission cable respectively, each voltage detection device 10 is connected with processor 20 respectively, this processor 20 sends hint instructions when the drop-out value of the wherein phase voltage of a phase of transmission cable is greater than predetermined threshold value to suggestion device 30, sends cue after suggestion device 30 receives this hint instructions according to this hint instructions.Thus realize the fault phase that fast finding leaks electricity to generation when a certain leak current fault of generation mutually of three-phase four-wire system power transmission lines, solve the technical matters being difficult to search leak current fault phase after electric leakage accident appears in existing power transmission lines.
During concrete enforcement, voltage detection device 10 is provided with three, and three voltage detection devices 10 are connected between A, B, C three-phase of transmission cable and ground wire, thus realizes the accurate detection to the electric leakage of three-phase four-wire system transmission cable.
In order to make detection of electrical leakage more accurate, each phase line of transmission cable is also respectively arranged with current detecting equipment 40, for the phase current of each phase of sense transmission line cable, simultaneously, each current detecting equipment 40 is also connected with processor 20 respectively, processor 20 sends hint instructions when the phase current of a wherein phase of transmission cable is greater than predetermined threshold value, and suggestion device 30 sends cue according to this hint instructions.Cooperatively interact jointly the ruuning situation of each phase of transmission cable is detected by arranging current detecting equipment 40 and voltage detection device 10, the accuracy rate of detection of electrical leakage can be increased substantially.
In specific works, according to the experimental data in real work, the predetermined threshold value that can set phase voltage drop-out value is 4V, the predetermined threshold value of phase current is 800mA, the phase current of processor 20 when the drop-out value of the wherein phase voltage of a phase of transmission cable is greater than a 4V or wherein phase is greater than 800mA or sends hint instructions when the drop-out value of the wherein phase voltage of a phase is greater than 4V and wherein the phase current of a phase is greater than 800mA to suggestion device 30, makes suggestion device 30 send cue.
Arranging of voltage detection device 10 and current detecting equipment 40 can according to selecting to install one of them to the accuracy requirement of detection of electrical leakage and economy in real work or both all install.
Better effect is pointed out in order to reach, suggestion device 30 can be luminaire or equipment of raising one's voice, also both can be arranged simultaneously, in order to reach energy-saving effect, luminaire can adopt A, B, C three-phase of three groups of LED corresponding transmission cables respectively, by controlling corresponding LED and light or the fault phase of electric leakage occurring flash for prompting.The equipment of raising one's voice adopts A, B, C three-phase of three groups of corresponding transmission cables of hummers difference, and three groups of hummers send different buzzers, the fault phase of prompting generation electric leakage of being sounded a buzzer by the hummer controlling correspondence.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an earth detector, is characterized in that, comprising:
Multiple voltage detection device (10), each described voltage detection device (10) is connected to wherein between a phase and ground line of three-phase four-wire system transmission cable, for detecting the phase voltage of each phase of described transmission cable;
Processor (20), is connected with each described voltage detection device (10), sends hint instructions when the drop-out value for the wherein phase voltage of a phase at described transmission cable is greater than predetermined threshold value;
Suggestion device (30), is connected with described processor (20), for sending cue according to described hint instructions.
2. earth detector according to claim 1, is characterized in that, described voltage detection device (10) is provided with three.
3. earth detector according to claim 1, is characterized in that, described earth detector also comprises:
Multiple current detecting equipment (40), each described current detecting equipment (40) is connected in a wherein phase of described transmission cable, for detecting the phase current of described transmission cable, wherein, described processor (20) is connected with each described current detecting equipment (40) respectively, sends hint instructions when the phase current for the wherein phase at described transmission cable is greater than predetermined threshold value.
4. according to the earth detector described in claim 1, it is characterized in that, described processor (20) sends hint instructions when the drop-out value of the wherein phase voltage of a phase of described transmission cable is greater than 4V.
5. earth detector according to claim 3, is characterized in that, described processor (20) sends hint instructions when the phase current of a wherein phase of described transmission cable is greater than 800mA.
6. earth detector according to claim 3, is characterized in that, described processor (20) sends hint instructions when the drop-out value of the wherein phase voltage of a phase of described transmission cable is greater than 4V and phase current is greater than 800mA.
7. earth detector according to claim 1, is characterized in that, described suggestion device (30) is luminaire.
8. earth detector according to claim 7, is characterized in that, described luminaire is LED.
9. earth detector according to claim 1, is characterized in that, described suggestion device (30) is the equipment of raising one's voice.
10. earth detector according to claim 9, is characterized in that, described in the equipment of raising one's voice be hummer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031852.3U CN205193203U (en) | 2015-12-11 | 2015-12-11 | Earth leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031852.3U CN205193203U (en) | 2015-12-11 | 2015-12-11 | Earth leakage detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205193203U true CN205193203U (en) | 2016-04-27 |
Family
ID=55786182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521031852.3U Expired - Fee Related CN205193203U (en) | 2015-12-11 | 2015-12-11 | Earth leakage detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205193203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572530A (en) * | 2015-12-11 | 2016-05-11 | 国网北京市电力公司 | Electric leakage detection device |
-
2015
- 2015-12-11 CN CN201521031852.3U patent/CN205193203U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572530A (en) * | 2015-12-11 | 2016-05-11 | 国网北京市电力公司 | Electric leakage detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 |
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| CF01 | Termination of patent right due to non-payment of annual fee |