CN204030567U - For the protection device for arc faults of three-phase circuit - Google Patents
For the protection device for arc faults of three-phase circuit Download PDFInfo
- Publication number
- CN204030567U CN204030567U CN201420497932.7U CN201420497932U CN204030567U CN 204030567 U CN204030567 U CN 204030567U CN 201420497932 U CN201420497932 U CN 201420497932U CN 204030567 U CN204030567 U CN 204030567U
- Authority
- CN
- China
- Prior art keywords
- circuit
- microprocessor
- signal
- warning device
- protection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a kind of protection device for arc faults for three-phase circuit; comprise current transformer, signal conditioning circuit, microprocessor, warning device; described current transformer is connected with described signal conditioning circuit, described current signal is sent to described signal conditioning circuit for the current signal that gathers in three-phase circuit.The protection device for arc faults of the utility model by providing; current signal collection module and failure analysis module, alarm module etc. are set in three-phase circuit; report to the police in time there is arc fault; effectively comprehensive monitoring and warning are carried out to the arc fault occurred in three-phase circuit; decrease the accident probability because arc fault occurs, substantially increase the fail safe that three-phase circuit uses.
Description
Technical field
The utility model belongs to electric circuit proterctive equipment technical field, particularly relates to a kind of protection device for arc faults for three-phase circuit.
Background technology
Electric arc is the continuous discharge phenomenon of crossing over certain dielectric between two electrodes, volatilizees in the local often along with electrode.Typical electric arc is formed in the airspace between yin, yang the two poles of the earth, and be a kind of air electric conduction phenomena, produce strong and lasting electric discharge between two electrodes, concentration of energy, temperature is high, very easily causes the fire incident in industry.Electric wiring in industry can, loose contact aging because of short circuit, electric wire, production equipment failure and other reasons and produce electric arc in the line.
Traditional industrial three-phase circuit failure protecting device can at electric wiring heavy overload, be short-circuited; or open circuit thus play a protective role when there is electric leakage; although but usually there is comparatively high peak in electric current when there is arc fault; but effective value possibility is also little, so traditional industrial circuits failure protecting device cannot provide comprehensively monitoring to arc fault and report to the police.
Summary of the invention
The purpose of this utility model is to provide a kind of protection device for arc faults for three-phase circuit, to solve the above-mentioned defect existed in prior art.
For realizing the purpose of this utility model, the utility model provides a kind of protection device for arc faults for three-phase circuit, comprise current transformer, signal conditioning circuit, microprocessor, warning device, described current transformer is connected with described signal conditioning circuit, described current signal is sent to described signal conditioning circuit for the current signal that gathers in three-phase circuit; Described signal conditioning circuit is connected with described current transformer, described microprocessor, for the described current signal received being converted to signal that the A/D module be located in microprocessor can receive and being sent to described microprocessor; Described microprocessor is connected with described signal conditioning circuit, described warning device, other module of described microprocessor is used for carrying out breakdown judge to the current signal that described A/D module receives and when there is described arc fault, fault message being sent to described warning device; Described warning device is connected with described microprocessor, for receive described microprocessor send fault message after report to the police.
Preferably; also comprise test circuit; described test circuit is connected with described microprocessor; whether normally work for detecting described protection device for arc faults; described test circuit produces test signal to described microprocessor; described microprocessor judges after accepting described test signal, if there is arc fault, fault message is sent to described warning device.
Preferably, also comprise power circuit, described power circuit is used for for coupled described microprocessor, described test circuit, described signal conditioning circuit, described warning device are powered.
Preferably, described power circuit comprises rectification reduction voltage circuit and voltage conversion chip, and wherein said rectification reduction voltage circuit is used for 220V alternating current to be converted to 24V DC power supply, and 24V is converted to 3.3V power supply by described voltage conversion chip.
Preferably, described warning device comprises acoustic-optic alarm and control centre's warning device, and described acoustic-optic alarm is connected with described microprocessor, described power circuit, reports to the police after receiving described fault message; Described control centre warning device is connected with described microprocessor, and it, by described Microprocessor S3C44B0X adhesive, sends failure alarm signal to control centre after receiving described fault message.
The protection device for arc faults of the utility model by providing; current signal collection module and failure analysis module, alarm module etc. are set in three-phase circuit; report to the police in time there is arc fault; effectively comprehensive monitoring and warning are carried out to the arc fault occurred in three-phase circuit; decrease the accident probability because arc fault occurs, substantially increase the fail safe that three-phase circuit uses.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Embodiment
In order to make the purpose of this utility model, technical scheme and beneficial effect clearly understand, below in conjunction with embodiment, the utility model is further elaborated.Should be understood to specific embodiment described herein only in order to explain the utility model, be not limited to protection range of the present utility model.
As shown in Figure 1, for realizing the purpose of this utility model, the utility model provides a kind of protection device for arc faults for three-phase circuit, comprise current transformer, signal conditioning circuit, microprocessor, warning device, described current transformer is connected with described signal conditioning circuit, described current signal is sent to described signal conditioning circuit for the current signal that gathers in three-phase circuit; Described signal conditioning circuit is connected with described current transformer, described microprocessor, for the described current signal received being converted to signal that the A/D module be located in microprocessor can receive and being sent to described microprocessor; Described microprocessor is connected with described signal conditioning circuit, described warning device, other module of described microprocessor is used for carrying out breakdown judge to the current signal that described A/D module receives and when there is described arc fault, fault message being sent to described warning device; Described warning device is connected with described microprocessor, for receive described microprocessor send fault message after report to the police.
It should be noted that, above-mentioned A/D module, D is the abbreviation of digital signals digital signal, and A is the abbreviation of analog signals analog signal, is namely that analog signal is converted to digital signal.
The course of work of the present utility model is:
Step one, current transformer gathers the current signal in three-phase circuit, through signal conditioning circuit, current signal is converted to microprocessor A/D module acceptable signal, sends into the A/D module of microprocessor.
Step 2, microprocessor carries out analyzing and processing to the three-phase current signal of A/D module acquires, judges whether the feature of electric current meets current characteristic when there is arc fault by specific algorithm.
Step 3, if met, then microprocessor provides fault-signal, drives acoustic-optic alarm, sends sound and light alarm signal, to play warning function, send signal by relay to control centre simultaneously, inform that control centre has arc fault to occur.If do not met, then decision circuitry is normal, and current transformer continues to gather three-phase current, for microprocessor provides current signal.
Preferably; the utility model also comprises test circuit; described test circuit is connected with described microprocessor; whether normally work for detecting described protection device for arc faults; described test circuit produces test signal to described microprocessor; described microprocessor judges after accepting described test signal, if there is arc fault, fault message is sent to described warning device.
When pressing the button of test circuit; test circuit sends a test signal to microprocessor; after microprocessor acceptance test signal; provide fault-signal; driving acoustic-optic alarm is reported to the police; send signal by relay to control centre simultaneously, whether working properlyly carry out failure judgement protective device with this.
Preferably, also comprise power circuit, described power circuit is used for for coupled described microprocessor, described test circuit, described signal conditioning circuit, described warning device are powered.
Preferably, described power circuit comprises rectification reduction voltage circuit and voltage conversion chip, and wherein said rectification reduction voltage circuit is used for 220V alternating current to be converted to 24V DC power supply, and 24V is converted to 3.3V power supply by described voltage conversion chip.
Preferably, described warning device comprises acoustic-optic alarm and control centre's warning device, and described acoustic-optic alarm is connected with described microprocessor, described power circuit, reports to the police after receiving described fault message; Described control centre warning device is connected with described microprocessor, and it, by described Microprocessor S3C44B0X adhesive, sends failure alarm signal to control centre after receiving described fault message.
The protection device for arc faults of the utility model by providing; current signal collection module and failure analysis module, alarm module etc. are set in three-phase circuit; report to the police in time there is arc fault; effectively comprehensive monitoring and warning are carried out to the arc fault occurred in three-phase circuit; decrease the accident probability because arc fault occurs, substantially increase the fail safe that three-phase circuit uses.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (5)
1. the protection device for arc faults for three-phase circuit, it is characterized in that, comprise current transformer, signal conditioning circuit, microprocessor, warning device, described current transformer is connected with described signal conditioning circuit, described current signal is sent to described signal conditioning circuit for the current signal that gathers in three-phase circuit; Described signal conditioning circuit is connected with described current transformer, described microprocessor, for the described current signal received being converted to signal that the A/D module be located in microprocessor can receive and being sent to described microprocessor; Described microprocessor is connected with described signal conditioning circuit, described warning device, other module of described microprocessor is used for carrying out breakdown judge to the current signal that described A/D module receives and when there is described arc fault, fault message being sent to described warning device; Described warning device is connected with described microprocessor, for receive described microprocessor send fault message after report to the police.
2. the protection device for arc faults for three-phase circuit according to claim 1; it is characterized in that; also comprise test circuit; described test circuit is connected with described microprocessor; whether normally work for detecting described protection device for arc faults, described test circuit produces test signal to described microprocessor, and described microprocessor judges after accepting described test signal; if there is arc fault, fault message is sent to described warning device.
3. the protection device for arc faults for three-phase circuit according to claim 2; it is characterized in that; also comprise power circuit, described power circuit is used for for coupled described microprocessor, described test circuit, described signal conditioning circuit, described warning device are powered.
4. the protection device for arc faults for three-phase circuit according to claim 3; it is characterized in that; described power circuit comprises rectification reduction voltage circuit and voltage conversion chip; wherein said rectification reduction voltage circuit is used for 220V alternating current to be converted to 24V DC power supply, and 24V is converted to 3.3V power supply by described voltage conversion chip.
5. the protection device for arc faults for three-phase circuit according to claim 4, it is characterized in that, described warning device comprises acoustic-optic alarm and control centre's warning device, described acoustic-optic alarm is connected with described microprocessor, described power circuit, reports to the police after receiving described fault message; Described control centre warning device is connected with described microprocessor, and it, by described Microprocessor S3C44B0X adhesive, sends failure alarm signal to control centre after receiving described fault message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420497932.7U CN204030567U (en) | 2014-08-29 | 2014-08-29 | For the protection device for arc faults of three-phase circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420497932.7U CN204030567U (en) | 2014-08-29 | 2014-08-29 | For the protection device for arc faults of three-phase circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204030567U true CN204030567U (en) | 2014-12-17 |
Family
ID=52070396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420497932.7U Expired - Fee Related CN204030567U (en) | 2014-08-29 | 2014-08-29 | For the protection device for arc faults of three-phase circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204030567U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242264A (en) * | 2014-08-29 | 2014-12-24 | 天津市鸿远电气股份有限公司 | Arc fault protection device for three-phase circuit |
| CN105203156A (en) * | 2015-09-18 | 2015-12-30 | 成都比善科技开发有限公司 | Electricity monitoring method for three-phase power source |
| CN109713652A (en) * | 2019-01-16 | 2019-05-03 | 安徽升隆电气有限公司 | A kind of fault electric arc breaker |
| CN112117735A (en) * | 2019-06-20 | 2020-12-22 | 尼克斯普有限公司 | Arc protection system and control method thereof |
-
2014
- 2014-08-29 CN CN201420497932.7U patent/CN204030567U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242264A (en) * | 2014-08-29 | 2014-12-24 | 天津市鸿远电气股份有限公司 | Arc fault protection device for three-phase circuit |
| CN105203156A (en) * | 2015-09-18 | 2015-12-30 | 成都比善科技开发有限公司 | Electricity monitoring method for three-phase power source |
| CN109713652A (en) * | 2019-01-16 | 2019-05-03 | 安徽升隆电气有限公司 | A kind of fault electric arc breaker |
| CN112117735A (en) * | 2019-06-20 | 2020-12-22 | 尼克斯普有限公司 | Arc protection system and control method thereof |
| CN112117735B (en) * | 2019-06-20 | 2023-01-06 | 尼克斯普有限公司 | Arc protection system and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202837494U (en) | Contactor state inspection device | |
| CN201656420U (en) | Three-phase auto reclosing electricity leakage protection switch | |
| CN204030567U (en) | For the protection device for arc faults of three-phase circuit | |
| CN102611069A (en) | Electric arc fault protector | |
| CN104377676A (en) | PT intelligent resonance elimination device for power distribution network | |
| CN205792453U (en) | A kind of distributed photovoltaic system online insulation against ground safety monitoring assembly | |
| CN106018967B (en) | The online insulation against ground safety monitoring assembly of distributed photovoltaic system | |
| CN202218006U (en) | Grounding fault detecting and protecting device of solar photovoltaic inverter | |
| CN104330607A (en) | AC-into-DC-system detection and forced tripping device | |
| CN204008808U (en) | Alternating current is scurried into the detection of straight-flow system and is compeled to jump device | |
| CN104242264A (en) | Arc fault protection device for three-phase circuit | |
| CN204271630U (en) | Power distribution network PT Intelligent resonance suppression device | |
| CN203135401U (en) | AC invasion protection device for DC system of transformer substation | |
| CN204046153U (en) | The circuit breaker that tape jam arc protection function is reported to the police | |
| CN205265243U (en) | Mine low pressure combination switch cabinet earthleakage protective equipment | |
| CN202524053U (en) | Electric arc failure protector | |
| CN203839787U (en) | Ground wire with electricity detecting function | |
| CN204425270U (en) | A kind of signal supervisory instrument for photovoltaic generating system | |
| CN203589690U (en) | An electric arc protective device | |
| CN105891691A (en) | Distributed local discharge detection and early warning system for high-voltage switch cabinet | |
| CN201828365U (en) | Switching-on pressure real-time monitoring and warning system of transformer substation disconnecting link | |
| CN104078777A (en) | Security clamp special for 10 kV high-voltage ground wire | |
| CN207424155U (en) | Power failure detection device | |
| CN204575769U (en) | Secondary current loop of transforming plant state on_line monitoring system | |
| CN204012849U (en) | A kind of portable charger that can automatic decision electric power polarity |
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: 20141217 Termination date: 20210829 |