CN204166086U - A kind of multifunctional low-voltage line fault searches instrument - Google Patents
A kind of multifunctional low-voltage line fault searches instrument Download PDFInfo
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- CN204166086U CN204166086U CN201420669379.0U CN201420669379U CN204166086U CN 204166086 U CN204166086 U CN 204166086U CN 201420669379 U CN201420669379 U CN 201420669379U CN 204166086 U CN204166086 U CN 204166086U
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- data processor
- line fault
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- current transformer
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Abstract
The utility model discloses a kind of multifunctional low-voltage line fault and search instrument, comprise split core type current transformer, data processor, display device and detachable control lever, split core type current transformer, data processor, display device are electrically connected successively, data processor comprises data processor shell and is located at the signal converter of data processor enclosure, signal amplification circuit and display driver circuit, the front end of data processor shell is provided with display device and range selector, the link of data processor and split core type current transformer is provided with lighting device, the lateral ends of data processor shell is provided with lighting device gauge tap, data processor and detachable control lever removably connect, the utility model structure is simple, easy to operate, only line branch point is detected when carrying out troubleshooting, energy rapid drop seek scope, search efficiency is high, accuracy is high, increase power supply possibility, reduce power off time and power failure range, reduce line upkeep labour intensity.
Description
Technical field
The utility model relates to field of electrical equipment, specifically refers to that a kind of multifunctional low-voltage line fault searches instrument.
Background technology
In China's electric power system, larger specific gravity is occupied in low voltage power distribution network, existing distribution network is widely distributed simultaneously, wiring is complicated, branched line is many, the probability broken down is higher, and be wherein short-circuited, the probability of earth fault accounts for total failare rate more than 95%, the power-off event therefore caused because of short circuit grounding extensively exists.Because distribution network Control protection system can only be protected for certain line fault, cannot judge trouble spot and excise; And in the low voltage power distribution network of complexity, branched line is more, short circuit, earth fault is more difficult searches, and the mode of searching adopted at present needs to step on bar inspection, step on when bar inspection operates due to alive circuit close together, the danger of easy generation falling from high altitude and electric shock, there is potential safety hazard, and then add the time of failture evacuation, power transmission can not be recovered in time, have a strong impact on the productive life of numerous people, also cause economic loss to power supply enterprise simultaneously.
The method for removing of searching of traditional circuit, earth fault is: first carry out walkaround inspection by maintainer to circuit, when naked eyes are not seen, first disconnection branch line is adopted to search, and then disconnect user circuit is searched, such work is not only required great effort time-consuming, and steps on bar operation and also need power failure to carry out all safety practices just to carry out, even if also may bring the danger of falling from high altitude and electric shock like this, also disturb the normal life of user simultaneously, the requirement of good service cannot be met.
In the operational process of 10kv circuit, ruuning situation for circuit only just can see the load condition of whole piece circuit in transformer station, the existing equipment of inspection for a line current directly can not carry out reading, need two people's cooperatings, a people measures, again through being wirelessly transmitted on an other equipment, by another person's reading, if carry out service work night then further increase the difficulty of searching, if certain device fails in detecting, cannot judge that specifically which platform equipment breaks down, and cannot complete normal testing.
Utility model content
The purpose of this utility model is: provide a kind of multifunctional low-voltage line fault to search instrument, can realize measuring 10KV line current, and can just, efficiently search the particular location of low-voltage circuit short circuit, earth fault.
The utility model is achieved through the following technical solutions: a kind of multifunctional low-voltage line fault searches instrument, comprise split core type current transformer, data processor, display device and detachable control lever, described split core type current transformer, data processor, display device are electrically connected successively; Described data processor comprises data processor shell and is located at the signal converter of data processor enclosure, signal amplification circuit and display driver circuit, and the front end of described data processor shell is provided with display device and range selector; The link of described data processor and split core type current transformer is provided with lighting device, and the lateral ends of described data processor shell is provided with lighting device gauge tap, and described data processor and detachable control lever removably connect.
In the utility model, split core type current transformer is mainly used in line current detection, and the opening of described current transformer is V-arrangement, when detecting electric current, automatically opening, do not need manually to open jaw, eliminate Danger Electric shock risk during contact circuit; To split core type current transformer, described data processor mainly detects that current signal processes, and shown by display device; Display device is that the signal after being processed in display driver loop shows, handled easily personnel reading; Lighting device controls to open or closed condition mainly through lighting device gauge tap, and can be the device such as LED, illuminating lamp producing high light, applicable night carries out searching of device line fault.Other structures in the utility model or principle are the common practise in affiliated field, repeat no more.
Further, in order to better realize the utility model, the jaw of described split core type current transformer is V-shaped, carrying out in current detecting process, automatically opening split core type current transformer by line stress, without the need to manually opening jaw, avoiding the generation of electric shock accidents.
Further, in order to better realize the utility model, described split core type current transformer, signal converter, signal amplification circuit, display driver circuit are electrically connected successively, the current signal that described split core type current transformer collects, successively after analog to digital converter, signal converter, signal amplification circuit, display driver circuit process, and show on the display apparatus, for electric power maintainer, line fault situation is judged.
Further, in order to better realize the utility model, described display driver circuit is voltage digital driver module.
Further, in order to better realize the utility model, described signal converter is analog-digital chip.
Further, in order to better realize the utility model, described display device is high brightness seven sections of LED display, and wherein high brightness seven sections of LED display are the known existing equipments of one of ordinary skill in the art, can directly commercially obtain.
Further, in order to better realize the utility model, described detachable control lever comprises more piece insulating bar, removably connect between described insulating bar, here the structure of detachable control lever is done further preferably, solve the inconvenience of existing troubleshooting device on using, existing troubleshooting device is when detection line fault, such as in switchboard line current detecting, transformer current electrical measurement, in the testing process of the equipment leakage electric currents such as motor, can only closely operate, reading is inconvenient, and easily there is electric shock accidents, and the utility model is by dismounting or lengthened insulative control lever, meet the testing requirement being positioned at needs eminence checkout equipment.
Further, in order to better realize the utility model, described in be detachably connected as bolt connect, here the mode removably connected further is limited, preferred bolt connects, and more piece insulating bar changes the length of detachable control lever by bolt through carrying out being rigidly connected.
Further, in order to better realize the utility model, described insulating bar is the insulating bar adopting high-strength glass fibre and epoxy resin to process, and plays insulation to control lever, also skids in operating personnel's use procedure to prevent simultaneously.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is by the setting of detachable control lever, is convenient to electric power overhaul personnel and keeps enough safe distances with circuit in maintenance process, namely carrying out trouble spot inspection by current detecting, avoiding the generation of electric shock accidents without the need to stepping on bar operation.
(2) the utility model is by adopting split core type current transformer; and jaw is V-shaped; when using this device to carry out testing current; jaw is opened automatically by line stress; device power supply (DPS) line is all snapped in split core type current transformer; without the need to manually opening jaw, can detect, enhance safety precautions.
(3) the utility model can carry out reading at a distance by adopting high light LED display screen to carry out data display, ensure that the safe distance of operating personnel and charging equipment, avoids the generation of electric shock accidents.
(4) the utility model is by the setting of lighting device, and lighting device is high brightness LED lighting lamp, and controlled by lighting device gauge tap illumination apparatus, adopt lighting device to be mainly applicable to carry out searching of line fault night, do not need to prepare light fixture separately.
(5) the utility model structure is simple, easy to operate, only need when carrying out troubleshooting to detect line branch point, can reduce the scope very soon carry out troubleshooting, search efficiency is high, accuracy is high, add power supply possibility, reduce power off time and power failure range, and reduce the labour intensity of line upkeep, improve work efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural schematic block diagram of embodiment 3 of the present utility model.
Wherein: 1-split core type current transformer, 2-lighting device, 3-range selector, 4-data processor, 5-display device, 6-detachably control lever, 7-lighting device gauge tap.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1:
The principle of the present embodiment, as shown in Figure 1 and Figure 2, a kind of multifunctional low-voltage line fault searches instrument, and comprise split core type current transformer 1, data processor 4, display device 5 and detachable control lever 6, described split core type current transformer 1, data processor 4, display device 5 are electrically connected successively; Described data processor 4 comprises data processor shell and is located at the signal converter of data processor enclosure, signal amplification circuit and display driver circuit, the front end of described data processor shell is provided with display device 5 and range selector 3, described data processor 4 is provided with lighting device 2 with the link of split core type current transformer 1, the lateral ends of described data processor shell is provided with lighting device gauge tap 7, and described data processor 4 removably connects with detachable control lever 6.
In the utility model, split core type current transformer 1 is mainly used in line current detection, and the opening of described current transformer, in pincerlike, when detecting electric current, automatically opened during contact circuit, not needed manually to open jaw, eliminate Danger Electric shock risk; To split core type current transformer 1, described data processor 4 mainly detects that current signal processes, and shown by display device 5; Display device 5 is that the signal after being processed in display driver loop shows, handled easily personnel reading, and then judges; Lighting device 2 controls to open or closed condition mainly through lighting device gauge tap 7, and applicable night carries out searching of device line fault.Other structures in the utility model or principle are the common practise in affiliated field, repeat no more.
Embodiment 2:
The present embodiment is on the basis of embodiment 1, and the jaw of described split core type current transformer 1 is V-shaped, carrying out, in current detecting process, automatically opening split core type current transformer 1 by line stress, without the need to manually opening jaw, avoids the generation of electric shock accidents.Other parts in the present embodiment are identical with embodiment 1, repeat no more.
Embodiment 3:
The present embodiment is on the basis of above-described embodiment, and as shown in Figure 2, the described split core type current transformer 1 of restriction, signal converter, signal amplification circuit, display driver circuit are electrically connected successively further.The current signal that described split core type current transformer 1 collects, successively after analog to digital converter, signal converter, signal amplification circuit, display driver circuit process, and show on the display apparatus, signal amplification circuit accurately by current signal display from zero, can judge line fault situation for electric power maintainer.Other parts in the present embodiment are same as the previously described embodiments, repeat no more.
Embodiment 4:
The present embodiment, on the basis of above-described embodiment, limits further, and described display driver circuit is voltage digital driver module, and Main Function realizes driving display device to detect that signal shows to pincerlike current detector 1; Described signal converter is analog-digital chip, and Main Function changes the signal that pincerlike current detector 1 detects; Described display device 5 is seven sections of LED display, high-brightness LED numerical display device mainly adopts seven sections of LED display to carry out combination display, maximumly be shown as 1999, electricity operator can the display result of reading displayed device at a distance, carries out fault inquiry and judgement.Other parts in the present embodiment are same as the previously described embodiments, repeat no more.
Embodiment 5:
The present embodiment, on the basis of above-described embodiment, limits described detachable control lever 6 further and comprises more piece insulating bar, adopt and removably connect between insulating bar.Mainly for existing troubleshooting device, when detection line, usually can only closely operate, reading is inconvenient, and easily there is electric shock accidents, such as in the testing process of the equipment leakage electric currents such as switchboard line current detecting, transformer current electrical measurement, motor, this device, by dismounting or lengthened insulative control lever, meets the maintenance requirement being positioned at eminence repair apparatus; The described bolt that is detachably connected as connects, and limit the mode removably connected here, preferred bolt connects, and more piece insulating bar changes the length of detachable control lever by bolt through carrying out being rigidly connected; Described insulating bar is the insulating bar adopting high-strength glass fibre and epoxy resin to process, and plays insulation to detachable control lever, also skids in operating personnel's use procedure to prevent simultaneously.Other parts in the present embodiment are same as the previously described embodiments, repeat no more.
Embodiment 6:
The utility model carries out the method that line fault is searched: when using this device to carry out current measurement and low-voltage load current measurement to 10KV circuit, after detachable control lever 6 is connected with data processor 4, split core type current transformer 1, wire is directly snapped in split core type current transformer 1, can carry out measuring and reading.
When using this device to carry out the detection of low-voltage circuit short trouble, when circuit wire diameter is little, when short-circuit current is less than 100A, because the electric current of short dot is larger than normal line current, with this device, the main line of circuit and branch line are detected, the circuit that electric current is large is short dot place circuit, and carrying out detection to the take-off point of the large circuit of electric current successively can find short dot; When circuit is greater than 100A, or when switch trip or fuse blows, circuit and transformer are disconnected, connect A.C. welder low-pressure side on the line, electric welding machine high-pressure side connects on the transformer, when suitable adjustment electric current is less than 100A, the main line large from electric current or branch line detect successively, can find short dot fast.
When using this device to carry out low-voltage ground fault detect, direct measurement zero line and phase line current, what have difference between current is ground side, measuring sequence measures on point pole, carry out along there being the direction of difference between current, ground connection when if ground current is greater than 50A, or switch trip or fuse burn out, then circuit and transformer are disconnected, connect A.C. welder on the line, A.C. welder one end ground connection, one end link, electric welding machine high-pressure side is connect on the transformer, adjustment electric current is less than 10A, with this equipment Inspection line current, the circuit of electric current is had to be ground path, carry out detection at the take-off point of circuit and can find out earth fault rapidly.
When using this device to carry out leakage current test, all snapped in by low-voltage equipment power lead in the jaw of split core type current transformer 1, the reading according to display device 5 can obtain leakage current.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection domain of the present utility model.
Claims (9)
1. a multifunctional low-voltage line fault searches instrument, it is characterized in that: comprise split core type current transformer (1), data processor (4), display device (5) and detachable control lever (6), described split core type current transformer (1), data processor (4), display device (5) are electrically connected successively; Described data processor (4) comprises data processor shell and is located at the signal converter of data processor enclosure, signal amplification circuit and display driver circuit, and the front end of described data processor shell is provided with display device (5) and range selector (3); Described data processor (4) is provided with lighting device (2) with the link of split core type current transformer (1), the lateral ends of described data processor shell is provided with lighting device gauge tap (7), and described data processor (4) and detachable control lever (6) removably connect.
2. a kind of multifunctional low-voltage line fault according to claim 1 searches instrument, it is characterized in that: the jaw of described split core type current transformer (1) is V-shaped.
3. a kind of multifunctional low-voltage line fault according to claim 1 searches instrument, it is characterized in that: described split core type current transformer (1), signal converter, signal amplification circuit, display driver circuit are electrically connected successively.
4. a kind of multifunctional low-voltage line fault according to claim 3 searches instrument, it is characterized in that: described display driver circuit is voltage digital driver module.
5. a kind of multifunctional low-voltage line fault according to claim 3 searches instrument, it is characterized in that: described signal converter is analog-digital chip.
6. a kind of multifunctional low-voltage line fault according to claim 1 searches instrument, it is characterized in that: described display device (5) is high brightness seven sections of LED display.
7. a kind of multifunctional low-voltage line fault according to any one of claim 1 to 6 searches instrument, it is characterized in that: described detachable control lever (6) comprises more piece insulating bar, adopts and removably connect between insulating bar.
8. a kind of multifunctional low-voltage line fault according to claim 7 searches instrument, it is characterized in that: described in be detachably connected as bolt connect.
9. a kind of multifunctional low-voltage line fault according to claim 8 searches instrument, it is characterized in that: described insulating bar is the hollow insulated rod adopting high-strength glass fibre and epoxy resin to process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420669379.0U CN204166086U (en) | 2014-11-11 | 2014-11-11 | A kind of multifunctional low-voltage line fault searches instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420669379.0U CN204166086U (en) | 2014-11-11 | 2014-11-11 | A kind of multifunctional low-voltage line fault searches instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204166086U true CN204166086U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420669379.0U Expired - Fee Related CN204166086U (en) | 2014-11-11 | 2014-11-11 | A kind of multifunctional low-voltage line fault searches instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204166086U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203904A (en) * | 2015-09-18 | 2015-12-30 | 国家电网公司 | Split electric leakage tester |
| CN106646101A (en) * | 2016-09-19 | 2017-05-10 | 国网浙江省电力公司温州供电公司 | Mass line protector management device |
| CN111693749A (en) * | 2020-06-23 | 2020-09-22 | 广东电网有限责任公司 | Distribution network fault positioning detection device |
-
2014
- 2014-11-11 CN CN201420669379.0U patent/CN204166086U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203904A (en) * | 2015-09-18 | 2015-12-30 | 国家电网公司 | Split electric leakage tester |
| CN106646101A (en) * | 2016-09-19 | 2017-05-10 | 国网浙江省电力公司温州供电公司 | Mass line protector management device |
| CN106646101B (en) * | 2016-09-19 | 2023-08-04 | 国网浙江省电力公司温州供电公司 | Management device for public line protection staff |
| CN111693749A (en) * | 2020-06-23 | 2020-09-22 | 广东电网有限责任公司 | Distribution network fault positioning 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20161111 |