CN203275566U - Single-phase short-circuit fault detector - Google Patents
Single-phase short-circuit fault detector Download PDFInfo
- Publication number
- CN203275566U CN203275566U CN 201320335336 CN201320335336U CN203275566U CN 203275566 U CN203275566 U CN 203275566U CN 201320335336 CN201320335336 CN 201320335336 CN 201320335336 U CN201320335336 U CN 201320335336U CN 203275566 U CN203275566 U CN 203275566U
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- China
- Prior art keywords
- fuse
- fault detector
- circuit
- housing
- phase earthing
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- Expired - Lifetime
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Abstract
The utility model discloses a single-phase short-circuit fault detector and belongs to the field of circuit fault detection devices. The single-phase short-circuit fault detector comprises a detection circuit; a voltmeter is connected in parallel with an indicating lamp so as to form the detection circuit; one end of the detection circuit is connected with one end of a fuse; the other end of the detection circuit is connected with a detection circuit lead-out wire; and the other end of the fuse is connected with a fuse lead-out wire. Based on the voltmeter and the brightness of the indicating lamp, maintenance personnel can judge whether a short-circuit fault exists intuitively and conveniently. The components of the single-phase short-circuit fault detector are commonly used devices. The single-phase short-circuit fault detector of the utility model has the advantages of simple circuit and low cost.
Description
Technical field
The utility model relates to short trouble detection technique field, specifically refers to be applied to the instrument that single-phase earthing fault detects.
Background technology
During the fault that is short-circuited in electrical network, sometimes the short circuit meeting of some users interior lines causes the low pressure fusible core fusing in the power supply feeder pillar, because fault is difficult to find, the repair personnel tends to think (particularly between the pliotherm period) that cause greatly due to power consumption, when carrying out the power transmission operation, low-tension fuse causes producing the disaster that again is short-circuited changing, and light burn out the safety that line switching, weight jeopardize operating personnel.Therefore need to detect single-phase earthing fault, although existing checkout equipment detection is very accurate, structure is all comparatively complicated, and cost is higher, and carries inconvenience, also is not easy to the maintainer outdoor on-the-spot the use.
The utility model content
The purpose of this utility model is to provide a kind of single-phase earthing fault detector, and circuit structure is simple, and cost is lower, is specially adapted to the maintainer at outdoor investigation short trouble.
For achieving the above object, scheme of the present utility model is: the single-phase earthing fault detector, comprise the testing circuit that voltage table and pilot lamp are formed in parallel, one end of described testing circuit connects an end of a fuse, other end connection detection circuit picks out electric wire, and the described fuse other end connects fuse and picks out electric wire.When breaking down, first the fuse with detected circuit disconnects, and testing circuit picks out electric wire and fuse picks out the fuse two ends that are wired to detected circuit, take common civil power subscriber's line circuit as example, open circuit in user family, if be not short-circuited fault in subscriber's line circuit, according to voltage divider principle, the reading of voltage table should be at about 100 volts, the light of pilot lamp is partially red partially dark, if any short trouble, the reading of voltage table should be at about 220 volts, and pilot lamp is normally lighted.The maintainer can be very directly perceived, easy judged whether short trouble, and the utility model circuit is simple, relates to components and parts and is device commonly used, cost is lower.
As preferably, the utility model also comprises a housing, arrange testing circuit and fuse in housing, the display board of described voltage table is positioned at surface of shell, offer the through hole for described pilot lamp printing opacity on described housing, housing is provided with two binding posts and has connected respectively that testing circuit picks out electric wire and fuse picks out electric wire.Housing is set with each device arrangements wherein, the easy access personnel carry operation.
As preferably, be provided with a lamplight brightness near described through hole to picture ID.The easy access personnel carry out the fault judgement according to lamplight brightness.
As preferably, described testing circuit has been connected in series a voltage detection switch, and the button of voltage detection switch is positioned on described housing, the operation of easy access personnel control.
As preferably, described pilot lamp has been connected in series an indicator light switch, and the button of indicator light switch is positioned on described housing, the operation of easy access personnel control.
As preferably, the one side of described housing is a control panel, and the button of the display board of described voltage table, through hole, indicator light switch, the button of voltage detection switch and binding post are arranged on described control panel.To need the maintainer to check that the device of operation all is arranged on control panel, be beneficial to maintainer's operation.
As preferably, described pilot lamp is an incandescent lamp.
After adopting technique scheme, the utlity model has following advantage: by simple components and parts commonly used combination, realize the short-circuit detecting to the single-phase fault circuit, simple in structure, cost is also lower; Configured housing, in housing, the easy access personnel carry and carry out outdoor work, are provided with control panel on housing with each device arrangements, will need the maintainer to check that the device of operation all is arranged on control panel, are beneficial to maintainer's operation.
Description of drawings
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
Fig. 1 is the circuit connection diagram that the utility model uses state;
Fig. 2 is the utility model control panel structural representation.
Embodiment
As described in Figure 1, the circuit of single-phase earthing fault detector connects, be connected in subscriber's line circuit, represent the subscriber's line load with R3, it comprises the testing circuit 1 that voltage table V1 and pilot lamp L1 are formed in parallel, one end of described testing circuit 1 connects the end of a fuse F1, and other end connection detection circuit picks out electric wire, and the described fuse F1 other end connects fuse and picks out electric wire.In the present embodiment, described pilot lamp L1 can adopt this bulb commonly used of incandescent lamp to come Cost reduction.
The principle of work of the present embodiment: take common civil power subscriber's line circuit as example, when breaking down, first the fuse F3 with detected circuit disconnects, testing circuit picks out electric wire and fuse picks out the fuse F3 two ends that are wired to detected circuit, open circuit in user family, if be not short-circuited fault in subscriber's line circuit, according to voltage divider principle, the reading of voltage table V1 should be at about 100 volts, the light of pilot lamp L1 is partially red partially dark, if any short trouble, the reading of voltage table V1 should be at about 220 volts, and pilot lamp L1 normally lights.The maintainer can be very directly perceived, easy judged whether short trouble, and the utility model circuit is simple, relates to components and parts and is device commonly used, cost is lower.
In order to guarantee circuit safety, described testing circuit 1 has been connected in series a voltage detection switch K1, and described pilot lamp L1 has been connected in series an indicator light switch K2, presses voltage detection switch K1 and makes voltage table start working, and presses indicator light switch K2, lights pilot lamp L1.
As shown in Figure 2, comprise a housing 2, the interior layout testing circuit 1 of housing 2 and fuse, the display board 3 of described voltage table is positioned at surface of shell, offer the through hole 4 for described pilot lamp printing opacity on described housing, in order to facilitate the maintainer to judge whether to break down by lamplight brightness, be provided with a lamplight brightness near described through hole 4 to picture ID 8.Also be provided with two binding posts 5 on housing and connected respectively that testing circuit picks out electric wire and fuse picks out electric wire.The button 6 of voltage detection switch and the button 7 of indicator light switch also all are positioned on described housing.Configured housing 2, in housing 2, the easy access personnel carry and carry out outdoor work with each device arrangements,
In order to further facilitate operation, the one side of described housing 2 is a control panel, to need the maintainer to check that the device of operation all is arranged on same control panel, comprised the display board 3, through hole 4, the button 7 of indicator light switch, button 6 and the binding post 5 of voltage detection switch of described voltage table.
Except above preferred embodiment, the utility model also has other embodiment, those skilled in the art can make various changes and adjustment according to the utility model, only otherwise break away from spirit of the present utility model, all should belong to the defined scope of the utility model claims.
Claims (7)
1. single-phase earthing fault detector, it is characterized in that: comprise the testing circuit (1) that voltage table (V1) and pilot lamp (L1) are formed in parallel, one end of described testing circuit (1) connects an end of a fuse (F1), other end connection detection circuit picks out electric wire, and described fuse (F1) other end connects fuse and picks out electric wire.
2. single-phase earthing fault detector according to claim 1, it is characterized in that: comprise a housing (2), arrange testing circuit (1) and fuse in housing (2), the display board of described voltage table (3) is positioned at surface of shell, offer the through hole (4) for described pilot lamp printing opacity on described housing, housing is provided with two binding posts (5) and has connected respectively that testing circuit picks out electric wire and fuse picks out electric wire.
3. single-phase earthing fault detector according to claim 2, is characterized in that: be provided with a lamplight brightness near described through hole (4) to picture ID (8).
4. single-phase earthing fault detector according to claim 3, it is characterized in that: described testing circuit (1) has been connected in series a voltage detection switch (K1), and the button of voltage detection switch (6) is positioned on described housing.
5. single-phase earthing fault detector according to claim 4, it is characterized in that: described pilot lamp (L1) has been connected in series an indicator light switch (K2), and the button of indicator light switch (7) is positioned on described housing.
6. single-phase earthing fault detector according to claim 5, it is characterized in that: the one side of described housing (2) is a control panel, and the button (7) of the display board of described voltage table (3), through hole (4), indicator light switch, the button (6) of voltage detection switch and binding post (5) are arranged on described control panel.
7. according to claim 1 or 6 described single-phase earthing fault detectors, it is characterized in that: described pilot lamp (L1) is an incandescent lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320335336 CN203275566U (en) | 2013-06-09 | 2013-06-09 | Single-phase short-circuit fault detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320335336 CN203275566U (en) | 2013-06-09 | 2013-06-09 | Single-phase short-circuit fault detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203275566U true CN203275566U (en) | 2013-11-06 |
Family
ID=49505943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320335336 Expired - Lifetime CN203275566U (en) | 2013-06-09 | 2013-06-09 | Single-phase short-circuit fault detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203275566U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918761A (en) * | 2017-04-15 | 2017-07-04 | 三门县职业中等专业学校 | A kind of short-circuit protection diagnostic equipment |
| CN111077476A (en) * | 2020-01-02 | 2020-04-28 | 湖南金泰环保科技有限公司 | Method for detecting short circuit or electric leakage fault point of equipment |
-
2013
- 2013-06-09 CN CN 201320335336 patent/CN203275566U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918761A (en) * | 2017-04-15 | 2017-07-04 | 三门县职业中等专业学校 | A kind of short-circuit protection diagnostic equipment |
| CN111077476A (en) * | 2020-01-02 | 2020-04-28 | 湖南金泰环保科技有限公司 | Method for detecting short circuit or electric leakage fault point of equipment |
| CN111077476B (en) * | 2020-01-02 | 2022-03-08 | 湖南金泰环保科技有限公司 | Method for detecting short circuit or electric leakage fault point of equipment |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |