CN207557400U - A kind of low voltage failure circuit investigates instrument - Google Patents
A kind of low voltage failure circuit investigates instrument Download PDFInfo
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- CN207557400U CN207557400U CN201721680835.1U CN201721680835U CN207557400U CN 207557400 U CN207557400 U CN 207557400U CN 201721680835 U CN201721680835 U CN 201721680835U CN 207557400 U CN207557400 U CN 207557400U
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Abstract
The utility model discloses a kind of low voltage failure circuits to investigate instrument, is related to low-voltage circuit fault detection technique field.The low voltage failure circuit investigates instrument, including power circuit, signal output apparatus, Special wiring device, control management circuit, export indicating circuit, electric-leakage detection circuit and short-circuit detecting circuit, discontinuous is generated by signal output apparatus and detects signal, the detection signal is input to by Special wiring device on circuit to be measured, the leakage current and short circuit current of signal output apparatus are detected by electric-leakage detection circuit and short-circuit detecting circuit simultaneously, feed back to control management circuit, it is shown on output indicating circuit after control management circuit analysis calculates, judge the circuit to be measured with the presence or absence of electric leakage and short circuit phenomenon, line fault investigation can be identified rapidly, and restore independent trouble shooting circuit again after non-fault line power supply, improve the investigation efficiency of faulty line, shorten the power failure stand-by period of non-fault line.
Description
Technical field
The utility model belongs to low-voltage circuit fault detection technique field more particularly to a kind of grade of rated voltage is
The line fault investigation of 220V/380V differentiates instrument.
Background technology
Grade of rated voltage is that the circuit of 220V/380V largely uses in China's electric power system, due to aging circuit, mistake
Short-circuit, electric leakage in line short, electric leakage or line terminal etc. caused by the reasons such as load, the lack of standardization, external force of construction causes can not
The phenomenon that power transmission, happens occasionally, and in the occasion of no electric leakage disconnecting switch, often a circuit is problematic influences that other are a plurality of simultaneously
The user of link can not electricity consumption.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of low voltage failure circuit investigation instrument, to solve to happen suddenly
Faulty line, i.e., is investigated rapidly discriminating and isolated by the problem of fast quick-recovery non-fault line power off time in scene that has a power failure is powered
Come, first failure is repaired in individual inspiration again after the power supply of recovery non-fault line, is reduced non-fault line and is had a power failure the stand-by period.
The utility model is to solve above-mentioned technical problem by the following technical solutions：A kind of low voltage failure circuit row
Instrument is looked into, including power circuit, signal output apparatus, Special wiring device, control management circuit, output indicating circuit, electric leakage inspection
Slowdown monitoring circuit and short-circuit detecting circuit；It is described control management circuit respectively with the signal output apparatus, output indicating circuit, electric leakage
Detection circuit and short-circuit detecting circuit electrical connection；The power circuit manages circuit with the signal output apparatus, control respectively
With output indicating circuit electrical connection；The signal output apparatus also respectively with electric-leakage detection circuit, short-circuit detecting circuit and special
Termination is electrically connected；The Special wiring device is electrically connected with circuit to be measured；
The control management circuit, for the signal output apparatus to be controlled to generate detection signal, and to detection of electrical leakage electricity
Road and short-circuit detecting circuit feedback result carry out analysis calculating, judge whether electric leakage or short circuit, then by exporting indicating circuit
Show testing result；
The power circuit, for providing power supply for signal output apparatus, control management circuit, output indicating circuit；
The signal output apparatus, for generate discontinuous detection signal, and by the discontinuous detection signal pass through it is described
Special wiring device is added on circuit to be measured；
The output indicating circuit, for showing detection data and testing result after analysis calculating；
The electric-leakage detection circuit, for detecting the leakage current size of the signal output apparatus, and by testing result
Feed back to the control management circuit；
The short-circuit detecting circuit, for detecting the short circuit current size of the signal output apparatus, and by testing result
Feed back to the control management circuit；
The Special wiring device, for connection to be measured, by the discontinuous detection signal be added to circuit to be measured
On, and the leakage current in circuit to be measured and short circuit current are fed back into the signal output apparatus.
Further, the control management circuit selects the high-speed microprocessor control system of model STC12A5C60S2.
Further, the power circuit is rechargeable lithium ion batteries.
Further, the signal output apparatus is the signal output apparatus formed based on IGBT, in the control pipe
It manages and discontinuous detection signal is generated under the control of circuit.
Further, the output indicating circuit selects 4.3 cun of touch screens of model DOP-B03S201.
Further, the electric-leakage detection circuit selects the leakage current sensor of LF series；The short-circuit detecting circuit choosing
With response time quick HF current transformer.
Further, the Special wiring device includes 4 wiring clamp, and 4 wiring clamp are respectively with treating survey line
A, B, C three-phase and the ground wire terminal connection on road.
Further, the power circuit, signal output apparatus, control management circuit, electric-leakage detection circuit and short circuit inspection
Slowdown monitoring circuit is mounted in engineering plastic hopper, and the top of the engineering plastic hopper is equipped with Handheld Division, is convenient for carrying, and resistance to compression is prevented
Tide.
Further, the front of the engineering plastic hopper is equipped with control panel, and the control panel is equipped with described defeated
Go out indicating circuit, signaling interface, indicator light, control button, charge port and power switch；The signaling interface connects including A
Mouth, B interfaces, C interfaces and ground interface, the signaling interface in engineering plastic hopper with the signal output apparatus
Output terminal connects, and is externally connect with the Special wiring device；The indicator light includes output indicator and power supply indicator, institute
The output terminal that output indicator is stated with the control management circuit is connect；The power supply indicator is connected company with the power switch
It connects, and is connect with the output terminal of the power circuit；The charge port is connect by charging circuit with the power circuit；It is described
Control button includes start button and stopping key, and the start button and stops key and manages circuit with the control respectively
Input terminal connects.
Further, be additionally provided with drawer type appendage socket on the top of the control panel, for store Special wiring device,
The attachmentes such as power cord.
Compared with prior art, low voltage failure circuit investigation instrument provided by the utility model, including power circuit, signal
Output circuit, Special wiring device, control management circuit, output indicating circuit, electric-leakage detection circuit and short-circuit detecting circuit, lead to
It crosses control management circuit control signal output circuit and generates discontinuous detection signal, discontinuous detection signal passes through Special wiring
Device is input on circuit to be measured, while the leakage of signal output apparatus is detected by electric-leakage detection circuit and short-circuit detecting circuit
Electric current and short circuit current, and control management circuit is fed back to, in output indicating circuit after control management circuit analysis calculates
Upper display judges that the circuit to be measured whether there is electric leakage and short circuit phenomenon, can rapidly identify line fault investigation, and
Restore independent trouble shooting circuit again after non-fault line power supply, improve the investigation efficiency of faulty line, shorten non-faulting
The power failure stand-by period of circuit；
The utility model provides power supply using rechargeable lithium ion batteries, without externally fed, is suitble to field operation；
All circuits are installed in engineering plastic hopper by the utility model, and easy to carry and resistance to compression is moisture-proof, are suitble to transport
With outdoor environment requirement.
Description of the drawings
It, below will be to needed in embodiment description in order to illustrate more clearly of the technical solution of the utility model
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only one embodiment of the utility model, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of internal circuit block diagram of low voltage failure circuit investigation instrument of the utility model；
Fig. 2 is a kind of control panel structure diagram of low voltage failure circuit investigation instrument of the utility model；
Wherein：1-4.3 cuns of touch screens, 2- control panels, 3- signaling interfaces, 4- output indicators, 5- power supply indicators, 6-
It stops key, 7- start buttons, 8- power switches, 9- charge ports, 10- drawer type appendage sockets.
Specific embodiment
With reference to the attached drawing in the utility model embodiment, it is novel to this implementation in technical solution carry out it is clear, complete
Site preparation describes, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.
Based on the embodiment in the utility model, those of ordinary skill in the art are obtained under the premise of creative work is not made
Every other embodiment, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of low voltage failure circuit investigation instrument provided by the utility model, including power circuit, signal
Output circuit, Special wiring device, control management circuit, output indicating circuit, electric-leakage detection circuit and short-circuit detecting circuit；Control
Tubulation reason circuit is electrically connected respectively with signal output apparatus, output indicating circuit, electric-leakage detection circuit and short-circuit detecting circuit；Electricity
Source circuit is electrically connected respectively with signal output apparatus, control management circuit and output indicating circuit；Signal output apparatus is also distinguished
It is electrically connected with electric-leakage detection circuit, short-circuit detecting circuit and Special wiring device；Special wiring device is electrically connected with circuit to be measured.
Control management circuit selects the high-speed microprocessor control system of model STC12A5C60S2, for signal to be controlled to export
Circuit generates detection signal, and carries out analysis calculating to electric-leakage detection circuit and short-circuit detecting circuit feedback result, judges whether
Electric leakage or short circuit, then show testing result by exporting indicating circuit.
Power circuit is rechargeable lithium ion batteries, for electric for signal output apparatus, control management circuit, output instruction
Road provides power supply, is suitble to field operation.
Signal output apparatus is the signal output apparatus formed based on IGBT, is generated under the control of control management circuit
Discontinuous detects signal, and discontinuous detection signal is added to by Special wiring device on circuit to be measured, not only will not be right
Equipment in circuit to be measured impacts, but can by signal feed back check whether leak electricity or short circuit.
4.3 cun of touch screens that indicating circuit selects model DOP-B03S201 are exported, for showing the inspection after analysis calculating
Measured data and testing result.
Electric-leakage detection circuit selects the leakage current sensor of LF series, big for detecting the leakage current of signal output apparatus
It is small, and testing result is fed back into control management circuit；Short-circuit detecting circuit selects response time quick high-frequency current mutual inductance
Testing result for detecting the short circuit current size of signal output apparatus, and is fed back to control management circuit by device.
Special wiring device include 4 wiring clamp, 4 wiring clamp respectively with A, B, C three-phase and ground of circuit to be measured
Line terminals connect, and the discontinuous detection signal that signal output apparatus is generated is added on circuit to be measured, while will be in circuit to be measured
Leakage current and short circuit current feed back to signal output apparatus.
Power circuit, signal output apparatus, control management circuit, electric-leakage detection circuit and short-circuit detecting circuit are mounted on
In engineering plastic hopper, the top of engineering plastic hopper is equipped with Handheld Division, is convenient for carrying, and resistance to compression is moisture-proof.
As shown in Fig. 2, the front of engineering plastic hopper is equipped with control panel 2, control panel 2 is equipped with DOP-B03S201's
4.3 cun of touch screens 1, signaling interface 3, indicator light, control button, charge port 9 and power switch 8；Signaling interface 3 includes A phases
Interface, B interfaces, C interfaces and ground interface；A interfaces, B interfaces, C interfaces and ground interface are in engineering plastic
It is connect in hopper with the output terminal of signal output apparatus, passes through four wiring clamp and circuit to be measured respectively outside engineering plastic hopper
A, B, C three-phase and ground wire terminal connection；Indicator light includes output indicator 4 and power supply indicator 5, output indicator 4 and control
Whether normal the output terminal connection of tubulation reason circuit, be used to indicate output；Power supply indicator 5 is connected in series with power switch 8, then
It is connect with the output terminal of power circuit, power supply indicator 5 is used to indicate whether power supply is normal, and power switch 8 is used to control power supply
Push And Release；Charge port 9 is connected in engineering plastic hopper by the input terminal of charging circuit and power circuit, in engineering plastic hopper
It is connect with external power supply by power cord, charged for rechargeable lithium ion batteries outside；Control button includes start button 7 and stops
Button 6, start button 7 and 6 input terminal respectively with control management circuit that stops key are connect, for controlling the startup of investigation instrument
And stopping.
Drawer type appendage socket 10 is additionally provided on the top of control panel 2, it is attached for storing Special wiring device, power cord etc.
Part.
The utility model low voltage failure circuit investigates the operation principle of instrument：Under the control of control management circuit, by IGBT
The signal output apparatus of composition generates discontinuous detection signal, and discontinuous detection signal is added to voltage by 4 wiring clamp
Grade is on the circuit to be measured of 220V/380V, at this point, detecting signal respectively by leakage current sensor and HF current transformer
The leakage current and short circuit current of output circuit, and detection signal is fed back into STC12A5C60S2 microcontrollers, pass through
Whether output is to 4.3 cun of touch screens 1 after the analysis of STC12A5C60S2 microcontrollers calculates, show detection data and leak electricity or short
Road.
Above disclosed is only specific embodiment of the present utility model, but the scope of protection of the utility model not office
It is limited to this, in the technical scope that any one skilled in the art discloses in the utility model, change can be readily occurred in
Change or modification, should be covered within the scope of the utility model.
Claims (10)
1. a kind of low voltage failure circuit investigates instrument, it is characterised in that：Including power circuit, signal output apparatus, Special wiring dress
It puts, control management circuit, output indicating circuit, electric-leakage detection circuit and short-circuit detecting circuit；The control management circuit difference
It is electrically connected with the signal output apparatus, output indicating circuit, electric-leakage detection circuit and short-circuit detecting circuit；The power circuit
It is electrically connected respectively with the signal output apparatus, control management circuit and output indicating circuit；The signal output apparatus also divides
It is not electrically connected with electric-leakage detection circuit, short-circuit detecting circuit and Special wiring device；The Special wiring device and circuit to be measured
Electrical connection；
The control management circuit, for the signal output apparatus to be controlled to generate detection signal, and to electric-leakage detection circuit and
Short-circuit detecting circuit feedback result carries out analysis calculating, judges whether electric leakage or short circuit, is then shown by exporting indicating circuit
Go out testing result；
The power circuit, for providing power supply for signal output apparatus, control management circuit, output indicating circuit；
The signal output apparatus, for generate discontinuous detection signal, and by the discontinuous detection signal pass through it is described special
Termination is added on circuit to be measured；
The output indicating circuit, for showing detection data and testing result after analysis calculating；
The electric-leakage detection circuit for detecting the leakage current size of the signal output apparatus, and testing result is fed back
To the control management circuit；
The short-circuit detecting circuit for detecting the short circuit current size of the signal output apparatus, and testing result is fed back
To the control management circuit；
The Special wiring device, for connection to be measured, by the discontinuous detection signal be added on circuit to be measured, and
Leakage current in circuit to be measured and short circuit current are fed back into the signal output apparatus.
2. low voltage failure circuit as described in claim 1 investigates instrument, it is characterised in that：The control management circuit selects model
High-speed microprocessor control system for STC12A5C60S2.
3. low voltage failure circuit as described in claim 1 investigates instrument, it is characterised in that：The power circuit for chargeable lithium from
Sub- battery.
4. low voltage failure circuit as described in claim 1 investigates instrument, it is characterised in that：The signal output apparatus is with IGBT
Based on the signal output apparatus that forms, discontinuous detection signal is generated under the control of the control management circuit.
5. low voltage failure circuit as described in claim 1 investigates instrument, it is characterised in that：The output indicating circuit selects model
4.3 cun of touch screens for DOP-B03S201.
6. low voltage failure circuit as described in claim 1 investigates instrument, it is characterised in that：The electric-leakage detection circuit selects LF systems
The leakage current sensor of row；The short-circuit detecting circuit selects response time quick HF current transformer.
7. low voltage failure circuit as described in claim 1 investigates instrument, it is characterised in that：The Special wiring device includes 4
Wiring clamp, 4 wiring clamp are connect respectively with A, B, C three-phase and ground wire terminal of circuit to be measured.
8. low voltage failure circuit as described in claim 1 investigates instrument, it is characterised in that：The power circuit, signal output electricity
Road, control management circuit, electric-leakage detection circuit and short-circuit detecting circuit are mounted in engineering plastic hopper, the engineering plastic hopper
Top be equipped with Handheld Division.
9. low voltage failure circuit as claimed in claim 8 investigates instrument, it is characterised in that：The front of the engineering plastic hopper is equipped with
Control panel, the control panel are equipped with the output indicating circuit, signaling interface, indicator light, control button, charge port
And power switch；The signaling interface includes A interfaces, B interfaces, C interfaces and ground interface, the signaling interface
Output terminal with the signal output apparatus in engineering plastic hopper is connect, and is externally connect with the Special wiring device；It is described
Indicator light includes output indicator and power supply indicator, and the output terminal that the output indicator manages circuit with the control connects
It connects；The power supply indicator is connected in series with the power switch, and is connect with the output terminal of the power circuit；The charging
Mouth is connect by charging circuit with the power circuit；The control button includes start button and stops key, the startup
Button and the input terminal to stop key respectively with the control management circuit are connect.
10. low voltage failure circuit as claimed in claim 9 investigates instrument, it is characterised in that：On the top of the control panel also
Equipped with drawer type appendage socket, for storing Special wiring device, power cord.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721680835.1U CN207557400U (en) | 2017-12-06 | 2017-12-06 | A kind of low voltage failure circuit investigates instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721680835.1U CN207557400U (en) | 2017-12-06 | 2017-12-06 | A kind of low voltage failure circuit investigates instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207557400U true CN207557400U (en) | 2018-06-29 |
Family
ID=62665152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721680835.1U Active CN207557400U (en) | 2017-12-06 | 2017-12-06 | A kind of low voltage failure circuit investigates instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207557400U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108926A (en) * | 2019-04-17 | 2019-08-09 | 中国船舶重工集团公司第七O三研究所无锡分部 | A kind of gas turbine switching value instruction malfunction elimination method |
| CN114355250A (en) * | 2022-01-14 | 2022-04-15 | 厦门理工学院 | Detection apparatus based on low-voltage electrical fault |
-
2017
- 2017-12-06 CN CN201721680835.1U patent/CN207557400U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108926A (en) * | 2019-04-17 | 2019-08-09 | 中国船舶重工集团公司第七O三研究所无锡分部 | A kind of gas turbine switching value instruction malfunction elimination method |
| CN114355250A (en) * | 2022-01-14 | 2022-04-15 | 厦门理工学院 | Detection apparatus based on low-voltage electrical fault |
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