CN202770949U - Detecting instrument for cable earth fault - Google Patents
Detecting instrument for cable earth fault Download PDFInfo
- Publication number
- CN202770949U CN202770949U CN2012203164781U CN201220316478U CN202770949U CN 202770949 U CN202770949 U CN 202770949U CN 2012203164781 U CN2012203164781 U CN 2012203164781U CN 201220316478 U CN201220316478 U CN 201220316478U CN 202770949 U CN202770949 U CN 202770949U
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- China
- Prior art keywords
- earth fault
- expansion link
- detection instrument
- fault detection
- cable earth
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Abstract
The utility model provides a detecting instrument for cable earth faults, and relates to a device used for detecting cable earth faults. The detecting instrument solves problems of high workload, long work time, low work efficiency, etc. exist in actual procedures of electric power line repair since no proper device for detecting cable earth faults exists at present. The detecting instrument comprises a signal receiver which includes a probe and a host machine, and a signal emitter assembled together with the host machine of the signal receiver. The detecting instrument is advantaged by convenient use, and high work efficiency, and has a plurality of methods to detect earth fault points, etc. The detecting instrument is mainly used in maintaining the electric power lines.
Description
Technical field
The utility model relates to a kind of equipment for the maintenance power circuit, particularly a kind of device for surveying cable earth fault.
Background technology
Along with the continuous increase of electrical network scale and circuit or cable are on active service for a long time, the generation meeting of circuit or cable earth fault is more and more frequent.Present existing earth fault detection instrument error is large, cost is high, and is existing main by manually pursuing along faulty line
BaseShaft tower is maked an inspection tour or load draws the road to dwindle fault coverage to carry out the trouble spot again and search, mainly have the problems such as workload is large, elapsed time length, inefficiency.
Summary of the invention
The purpose of this utility model is intended to solve have now searches the problem that exists in the operation of power circuit earth fault, and a kind of cable earth fault detection instrument that can find fast the trouble spot is provided.
The purpose of this utility model can realize by following technical solution:
This cable earth fault detection instrument comprises signal receiver, and described signal receiver comprises probe and main frame, also is provided with the signal projector that the host groups with described signal receiver is fitted together.The effect that main frame and the signal projector of described signal receiver fitted together is to make this cable earth fault detection instrument possess the signal output function, the convenient use.
The purpose of this utility model can also be achieved through the following technical solutions:
Described signal projector is provided with rechargable power supplies.The effect of described rechargable power supplies is that the electric energy when providing open-air operation in the non-fixed power situation for described cable earth fault detection instrument is supplied with, and makes things convenient for the use of this detection instrument.Described signal receiver also comprises expansion link, and this expansion link is provided with probe bindiny mechanism.The effect that described expansion link is set is for assisting probe to search the electric power cable earth fault, improving Effect on Detecting.The effect that described probe bindiny mechanism is set is at described expansion link described probe being installed.Described signal projector comprises earth jack, signal output port, and the main frame of described signal receiver comprises signal input port and reometer.The effect of described earth jack is be used to realizing described signal projector ground connection.The effect of described signal output port is for the output test signal.The effect of described signal input port is the information of obtaining be used to inputting described probe.The effect of described reometer is be used to showing that described probe inputs the information of described main frame.Described probe bindiny mechanism is the jack that is arranged at described expansion link head.With jack as probe bindiny mechanism and design in the expansion link head have simple in structure, make things convenient for probe to install and the advantages such as use.Described expansion link is insulation drawing and pulling type expansion link, and described signal receiver main frame is provided with switch, gear adjusting knob and charging port.Described insulation drawing and pulling type expansion link has advantages of safe, easy to use.The effect of described switch is the working line of switch main frame.The effect of described gear adjusting knob is to regulate input signal intensity on finder to express scope.The effect of described charging port is for charging to rechargable power supplies.Described signal receiver main frame arranges security, convenience and the adaptive advantage that switch, gear adjusting knob and charging port have increases this device use.Described signal projector is provided with frequency and selects button, charging port, charging indicator light, under-voltage pilot lamp and power light.It is be used to the frequency range of regulating described signal projector output signal that described frequency is selected the effect of button.The effect of described charging port is for accessing charge power supply to described rechargable power supplies.The effect of described charging indicator light is to be used to indicate described rechargable power supplies whether to be in charged state.The effect of described under-voltage pilot lamp is the energy reserve situation that is used to indicate rechargable power supplies.The effect of described power light is to be used to indicate whether working power is arranged.Described signal projector with above-mentioned function and parts has convenient the use.Described probe bindiny mechanism is that the diameter that is arranged at described expansion link head is the circular socket holes of 26mm.Described probe bindiny mechanism is that described diameter is that the circular socket holes of 26mm can satisfy at present and between the normally used described probe and described expansion link the requirement that is connected is installed, and has advantages of simplified structure design, is easy to realize that standardization processes.
The beneficial effects of the utility model: because by a plurality of assembling parts such as described signal receiver and transmitter are in the same place, have increased function and surveyed the means of cable earth fault, made things convenient for use, improved work efficiency.So, the utlity model has the advantages such as means easy to use, as to survey earth fault are many, work efficiency is high.
Description of drawings:
Fig. 1 is the structural representation of the utility model signal projector;
Fig. 2 is the structural representation of the utility model signal receiver.
Among the figure 1, earth jack, 2, signal output port, 3, the charge power supply plug, 4, power switch, 5, frequency selects button, 6, the charging jack, 7, charging indicator light, 8, under-voltage pilot lamp, 9, power light, 10, expansion link, 11, jack, 12, probe, 13, signal connecting line, 14, reometer, 15, signal input port, 16, charging jack, 17, switch, 18, the gear adjusting knob.
Embodiment:
Below in conjunction with drawings and Examples the utility model is further specified.
This cable earth fault detection instrument, comprise signal receiver, described signal receiver comprises probe 12 and main frame, also be provided with the signal projector that the host groups with described signal receiver is fitted together, described signal projector is provided with rechargable power supplies, described signal projector comprises earth jack 1, signal output port 2, power switch 4, frequency is selected button 5, charging port, charging indicator light 7, under-voltage pilot lamp 8 and power light 9, described charging port comprises charge power supply plug 3 and charging jack 6, described signal receiver also comprises expansion link 10, this expansion link 10 is provided with probe bindiny mechanism, described probe bindiny mechanism is the jack 11 that is arranged at described expansion link 10 heads, this jack 11 is the circular hole of 26mm for diameter, the main frame of described signal receiver comprises signal input port 15, reometer 14, switch 17, gear adjusting knob 18 and charging jack 16, described expansion link 10 is insulation drawing and pulling type expansion link, and described probe 12 is by signal connecting line 13, signal input port 15 is connected with described main frame.
Using method and principle of work: when circuit generation earth fault, described signal connecting line 13 is inserted described main frame, open the switch 17 of described main frame, be transferred to suitable gear by described gear adjusting knob 18, in ground, perpendicular to test line, this moment, reometer 14 pointers slightly swung with probe 12 levels, when progressively near the trouble spot, harmonic current increases gradually, and earth fault just is indicated at large electric current and diminishes suddenly between the two, then finds the trouble spot.When cable line ground connection, pull open the jack 11 that expansion link 10 places probe 12 on head, level is in like manner measured the cable earth fault point in ground, perpendicular to tested cable.After power distribution network generation singlephase earth fault has a power failure, the described earth jack 1 of described signal projector is connected earthing clamp, earthing clamp is connected with ground rod, testing clamp connected snap on the tested cable, by described signal projector to faulty line harmonic current signal, come the humorous intensity of wave of enhanced grounding circuit, and realize localization of fault by the current intelligence of this equipment Inspection wireless receiving high-frequency harmonic signal.
Claims (9)
1. cable earth fault detection instrument comprises signal receiver, and described signal receiver comprises probe and main frame, it is characterized in that also being provided with the signal projector that the host groups with described signal receiver is fitted together.
2. cable earth fault detection instrument as claimed in claim 1 is characterized in that described signal projector is provided with rechargable power supplies.
3. cable earth fault detection instrument as claimed in claim 1 or 2 is characterized in that described signal receiver also comprises expansion link, and this expansion link is provided with probe bindiny mechanism.
4. cable earth fault detection instrument as claimed in claim 3 is characterized in that described signal projector comprises earth jack, signal output port, and the main frame of described signal receiver comprises signal input port and reometer.
5. cable earth fault detection instrument as claimed in claim 4 is characterized in that described probe bindiny mechanism is the jack that is arranged at described expansion link head.
6. cable earth fault detection instrument as claimed in claim 5 is characterized in that described expansion link is insulation drawing and pulling type expansion link, and described signal receiver main frame is provided with switch, gear adjusting knob and charging port.
7. cable earth fault detection instrument as claimed in claim 3 is characterized in that described signal projector is provided with frequency and selects button, charging port, charging indicator light, under-voltage pilot lamp and power light.
8. cable earth fault detection instrument as claimed in claim 7 is characterized in that described signal projector comprises earth jack, signal output port, and the main frame of described signal receiver comprises signal input port and reometer.
9. cable earth fault detection instrument as claimed in claim 7, it is characterized in that described main frame is provided with switch, gear adjusting knob and charging port, described expansion link is insulation drawing and pulling type expansion link, and described probe bindiny mechanism is that the diameter that is arranged at described expansion link head is the circular socket holes of 26mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203164781U CN202770949U (en) | 2012-07-03 | 2012-07-03 | Detecting instrument for cable earth fault |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203164781U CN202770949U (en) | 2012-07-03 | 2012-07-03 | Detecting instrument for cable earth fault |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202770949U true CN202770949U (en) | 2013-03-06 |
Family
ID=47777513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203164781U Expired - Fee Related CN202770949U (en) | 2012-07-03 | 2012-07-03 | Detecting instrument for cable earth fault |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202770949U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646119A (en) * | 2016-11-24 | 2017-05-10 | 国网山东省电力公司成武县供电公司 | Ground fault search instrument, and ground fault point search method and system |
| CN108549044A (en) * | 2018-03-27 | 2018-09-18 | 广东电网有限责任公司中山供电局 | A kind of transformer station direct current system insulation route selection tester |
| US10223906B2 (en) | 2017-01-23 | 2019-03-05 | Florida Power & Light Company | Open neutral detection |
-
2012
- 2012-07-03 CN CN2012203164781U patent/CN202770949U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646119A (en) * | 2016-11-24 | 2017-05-10 | 国网山东省电力公司成武县供电公司 | Ground fault search instrument, and ground fault point search method and system |
| CN106646119B (en) * | 2016-11-24 | 2019-05-10 | 国网山东省电力公司成武县供电公司 | Earth fault searches instrument, earth fault lookup method and system |
| US10223906B2 (en) | 2017-01-23 | 2019-03-05 | Florida Power & Light Company | Open neutral detection |
| CN108549044A (en) * | 2018-03-27 | 2018-09-18 | 广东电网有限责任公司中山供电局 | A kind of transformer station direct current system insulation route selection tester |
| CN108549044B (en) * | 2018-03-27 | 2023-08-25 | 广东电网有限责任公司中山供电局 | Insulation line selection tester for direct current system of transformer substation |
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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: 20130306 Termination date: 20140703 |
|
| EXPY | Termination of patent right or utility model |