CN203260997U - Three-phase safety electricity-using appliance - Google Patents
Three-phase safety electricity-using appliance Download PDFInfo
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- CN203260997U CN203260997U CN 201320300800 CN201320300800U CN203260997U CN 203260997 U CN203260997 U CN 203260997U CN 201320300800 CN201320300800 CN 201320300800 CN 201320300800 U CN201320300800 U CN 201320300800U CN 203260997 U CN203260997 U CN 203260997U
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Abstract
A three-phase safety electricity-using appliance is composed of a beaker, a contactor, a three-phase isolation transformer, a state display and alarm circuit, a DSP control circuit, a signal isolation adjustment circuit, an auxiliary power supply, a phase loss detection circuit, a short-circuit detection circuit, an overload detection circuit, an overvoltage detection circuit, an electric leakage detection circuit and a 485 communication circuit. The three-phase safety electricity-using appliance has a function of preventing electric leakage and electric shock, can protect equipment and circuits in case of overload, overvoltage, short circuit and phase loss, can remotely monitor and control a whole circuit system by connecting an external remote monitoring system and the 485 communication circuit, and plays an active role in protecting safety of a power grid and people.
Description
Technical field
The utility model relates to protective device for electric safety, is specifically related to a kind of three-phase safe electricity consumption instrument.
Background technology
Serious overload occurs in the electricity consumption loop or short trouble is recurrent accident on power consumption equipment, and electricity consumption instrument commonly used is protected circuit by earth leakage protective device at present.Earth leakage protective device mainly is divided into voltage-type and current mode, and its principle all is to cut off supply line by testing circuit and executive circuit, thereby makes down circuitry, and circuit or personal safety are guaranteed.In case this method testing circuit or executive circuit break down, and accident potential will occur.Simultaneously; traditional guard method mainly be by fuse or excess flow switch be used for circuit is protected; fuse needs could cut off power supply after the fusing in the ordinary course of things; fusing time and electric current are inversely proportional to; fusing must have larger electric current in short time; can produce a large amount of sparks and high temperature during fusing; excess flow switch need to instantaneously surpass ten times of rated current or just can cut off the electricity supply more than the decades of times; and larger electric current also will produce larger spark and high temperature, and these sparks and high temperature hide some dangers for for serious accident too.In addition, because what use is fuse or excess flow switch, in case fuse or excess flow switch play a role after having an accident, whole circuit namely is cut off, only have again change fuse or replacement excess flow switch after, circuit could recover normally, and can't be normal by the automatic recovery of self function of circuit.
Summary of the invention
The purpose of this utility model is to provide a kind of in real time detection line electricity consumption situation that is installed in the three-phase alternating current electric line, and the three-phase safe electricity consumption instrument that the person and power consumption equipment are protected.
The technical scheme that realizes the utility model purpose is: a kind of three-phase safe electricity consumption instrument, and it comprises circuit breaker, contactor, three-phase isolation transformer, state demonstration and circuit for alarming, DSP control circuit, signal isolation Circuit tuning, accessory power supply, lack detection circuit, short-circuit detecting circuit, overload detection circuit, over-voltage detection circuit, electric-leakage detection circuit and 485 communicating circuits; The input of circuit breaker connects three-phase alternating-current supply, and the output of circuit breaker connects contactor, and the output of contactor connects the input of three-phase isolation transformer, and the output of three-phase isolation transformer connects load; The three-phase alternating-current supply of the input connecting breaker output of lack detection circuit, the output of lack detection circuit connect the input of signal isolation Circuit tuning; The three-phase alternating-current supply of the input connecting breaker output of short-circuit detecting circuit, the output of short-circuit detecting circuit connect the input of signal isolation Circuit tuning; The three-phase alternating-current supply of the input connecting breaker output of overload detection circuit, the output of overload detection circuit connect the input of signal isolation Circuit tuning; The three-phase alternating-current supply of the input connecting breaker output of over-voltage detection circuit, the output of over-voltage detection circuit connect the input of signal isolation Circuit tuning; The input of electric-leakage detection circuit connects the output of three-phase isolation transformer, and the output of electric-leakage detection circuit connects the input of signal isolation Circuit tuning; The output of signal isolation Circuit tuning connects the input of DSP control circuit, and the output of DSP control circuit is connected with state with described contactor and circuit for alarming is connected; The communication signal end of DSP control circuit is connected with the signal end of 485 communicating circuits; The three-phase alternating-current supply of the input connecting breaker output of accessory power supply, the output of accessory power supply are connected with state demonstration and circuit for alarming, DSP control circuit, signal isolation Circuit tuning, lack detection circuit, short-circuit detecting circuit, overload detection circuit, over-voltage detection circuit, electric-leakage detection circuit, 485 communicating circuits respectively.
This three-phase safe electricity consumption instrument has anticreep, electric shock function; and overload, overvoltage, short circuit, phase shortage situation to equipment and circuit have defencive function, by outer remote supervisory control system and being connected of 485 communicating circuits whole Circuits System are carried out remote monitoring and control simultaneously.To protection electrical network and personal safety, positive effect is arranged.
Description of drawings
Accompanying drawing 1 is theory diagram of the present utility model.
Among Fig. 1,1, contactor, 2, three-phase isolation transformer, 3, state shows and circuit for alarming, 4, the DSP control circuit, 5, signal isolation Circuit tuning, 6, accessory power supply, 7, lack detection circuit, 8, short-circuit detecting circuit, 9, overload detection circuit, 10, over-voltage detection circuit, 11, electric-leakage detection circuit, 12,485 communicating circuits, 13, load, 14, circuit breaker.
Embodiment
By reference to the accompanying drawings embodiment of the present utility model is described.
In Fig. 1, the input of circuit breaker 14 connects three-phase alternating-current supply, the output of circuit breaker 14 connects contactor 1, the output of contactor 1 connects the input of three-phase isolation transformer 2, the output of three-phase isolation transformer 2 connects load 13, and the output of DSP control circuit 4 is connected with contactor 1.After three-phase alternating current passed through circuit breaker 14 and contactor 1, supply load 13 used after three-phase isolation transformer 2 transformations, and DSP control circuit 4 drives the startup of contactors 1 control circuit and stops.The three-phase alternating-current supply of input connecting breaker 14 outputs of lack detection circuit 7, the output of lack detection circuit 7 connects the input of signal isolation Circuit tuning 5, lack detection circuit 7 is from the three-phase alternating current source sampling of circuit breaker 14 outputs, detect supply voltage whether phase shortage and inclined to one side mutually, output connects the input of signal isolation Circuit tuning 5, three phase mains when power supply, when having one not have mutually voltage or phase voltage deviation greater than set point, lack detection circuit 7 will obtain and treated signal sends signal isolation Circuit tuning 5 to.The three-phase alternating-current supply of input connecting breaker 14 outputs of short-circuit detecting circuit 8, the output of short-circuit detecting circuit 8 connects the input of signal isolation Circuit tuning 5, short-circuit detecting circuit 8 is from the three-phase alternating current source sampling of circuit breaker 14 outputs, output connects the input of signal isolation Circuit tuning 5, three phase mains when power supply, be considered as short circuit when having a phase current to surpass 5 times of load current value, short-circuit detecting circuit 8 will obtain and treated signal sends signal isolation Circuit tuning 5 to.The three-phase alternating-current supply of input connecting breaker 14 outputs of overload detection circuit 9, the output of overload detection circuit 9 connects the input of signal isolation Circuit tuning 5, overload detection circuit 9 is from the three-phase alternating current source sampling of circuit breaker 14 outputs, current value in the detection line, when load current surpasses set point, overload observation circuit 9 will obtain and treated signal sends signal isolation Circuit tuning 5 to.The three-phase alternating-current supply of input connecting breaker 14 outputs of over-voltage detection circuit 10, the output of over-voltage detection circuit 10 connects the input of signal isolation Circuit tuning 5, over-voltage detection circuit 10 is from the three-phase alternating current source sampling of circuit breaker 14 outputs, detect the variable quantity of supply voltage, three phase mains when power supply, when having a phase voltage to surpass set point, over-voltage detection circuit 10 will obtain and treated signal sends signal isolation Circuit tuning 5 to.The input of electric-leakage detection circuit 11 connects the output of three-phase isolation transformer 2, the output of detection of electrical leakage electricity 11 connects the input of signal isolation Circuit tuning 5, electric-leakage detection circuit 11 is from the three-phase alternating current source sampling of three-phase isolation transformer 2 outputs, when three-phase isolation transformer 2 outputs electric leakage and electrical leakage occur reach set point, electric-leakage detection circuit 11 will obtain and treated signal sends signal isolation Circuit tuning 5 to.The output of signal isolation Circuit tuning 5 connects the input of DSP control circuit 4, the output of DSP control circuit 4 shows with state and circuit for alarming 3 is connected, after adjusting, the signal isolation that signal isolation Circuit tuning 5 collects each testing circuit becomes the analog quantity of suitable DSP control circuit 4 processing and the input that switching value is delivered to DSP control circuit 4, send the work of control signal control complete machine, the working state signal that by state demonstration and circuit for alarming 3 DSP control circuit 4 is sent simultaneously through the output from DSP control circuit 4 after the Treatment Analysis, running parameter signal and fault-signal show.The communication signal end of DSP control circuit 4 is connected with the signal end of 485 communicating circuits 12, and by 485 communicating circuits 12 and being connected of outer remote supervisory control system work at present state and running parameter being uploaded to the host computer demonstration.The three-phase alternating-current supply of input connecting breaker 14 outputs of accessory power supply 6, the output of accessory power supply 6 show with state respectively and circuit for alarming 3, DSP control circuit 4, signal isolation Circuit tuning 5, lack detection circuit 7, short-circuit detecting circuit 8, overload detection circuit 9, over-voltage detection circuit 10, electric-leakage detection circuit 11,485 communicating circuits 12 are connected.Accessory power supply 6 is obtained input voltage from power supply, through providing stable working power for other circuit of complete machine after filtering, rectification, the voltage stabilizing.
Claims (1)
1. three-phase safe electricity consumption instrument is characterized in that: it comprises circuit breaker, contactor, three-phase isolation transformer, state demonstration and circuit for alarming, DSP control circuit, signal isolation Circuit tuning, accessory power supply, lack detection circuit, short-circuit detecting circuit, overload detection circuit, over-voltage detection circuit, electric-leakage detection circuit and 485 communicating circuits; The input of circuit breaker connects three-phase alternating-current supply, and the output of circuit breaker connects contactor, and the output of contactor connects the input of three-phase isolation transformer, and the output of three-phase isolation transformer connects load; The three-phase alternating-current supply of the input connecting breaker output of lack detection circuit, the output of lack detection circuit connect the input of signal isolation Circuit tuning; The three-phase alternating-current supply of the input connecting breaker output of short-circuit detecting circuit, the output of short-circuit detecting circuit connect the input of signal isolation Circuit tuning; The three-phase alternating-current supply of the input connecting breaker output of overload detection circuit, the output of overload detection circuit connect the input of signal isolation Circuit tuning; The three-phase alternating-current supply of the input connecting breaker output of over-voltage detection circuit, the output of over-voltage detection circuit connect the input of signal isolation Circuit tuning; The input of electric-leakage detection circuit connects the output of three-phase isolation transformer, and the output of electric-leakage detection circuit connects the input of signal isolation Circuit tuning; The output of signal isolation Circuit tuning connects the input of DSP control circuit, and the output of DSP control circuit is connected with state with described contactor and circuit for alarming is connected; The communication signal end of DSP control circuit is connected with the signal end of 485 communicating circuits; The three-phase alternating-current supply of the input connecting breaker output of accessory power supply, the output of accessory power supply are connected with state demonstration and circuit for alarming, DSP control circuit, signal isolation Circuit tuning, lack detection circuit, short-circuit detecting circuit, overload detection circuit, over-voltage detection circuit, electric-leakage detection circuit, 485 communicating circuits respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320300800 CN203260997U (en) | 2013-05-29 | 2013-05-29 | Three-phase safety electricity-using appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320300800 CN203260997U (en) | 2013-05-29 | 2013-05-29 | Three-phase safety electricity-using appliance |
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| Publication Number | Publication Date |
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| CN203260997U true CN203260997U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320300800 Expired - Fee Related CN203260997U (en) | 2013-05-29 | 2013-05-29 | Three-phase safety electricity-using appliance |
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| CN (1) | CN203260997U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI566491B (en) * | 2015-01-23 | 2017-01-11 | ding-cheng Lai | Power protection devices and three-phase power protection devices |
| CN106329724A (en) * | 2016-08-24 | 2017-01-11 | 国网山东省电力公司单县供电公司 | Control system for remote control of low-voltage circuit breaker |
| CN110611313A (en) * | 2019-10-10 | 2019-12-24 | 广东华邦创科智能技术有限公司 | Three-phase four-wire AC power frequency intelligent protection safety power supply |
| CN113300363A (en) * | 2021-07-26 | 2021-08-24 | 湖南一二三智能科技有限公司 | Safe power utilization device |
| CN113872182A (en) * | 2021-07-15 | 2021-12-31 | 华邦创科(惠州市)智能科技有限公司 | A three-phase △-Y isolated safe power supply system |
-
2013
- 2013-05-29 CN CN 201320300800 patent/CN203260997U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI566491B (en) * | 2015-01-23 | 2017-01-11 | ding-cheng Lai | Power protection devices and three-phase power protection devices |
| CN106329724A (en) * | 2016-08-24 | 2017-01-11 | 国网山东省电力公司单县供电公司 | Control system for remote control of low-voltage circuit breaker |
| CN106329724B (en) * | 2016-08-24 | 2017-11-24 | 国网山东省电力公司单县供电公司 | One kind is used for remote control low-voltage circuit breaker control system |
| CN110611313A (en) * | 2019-10-10 | 2019-12-24 | 广东华邦创科智能技术有限公司 | Three-phase four-wire AC power frequency intelligent protection safety power supply |
| CN113872182A (en) * | 2021-07-15 | 2021-12-31 | 华邦创科(惠州市)智能科技有限公司 | A three-phase △-Y isolated safe power supply system |
| CN113872182B (en) * | 2021-07-15 | 2024-03-22 | 华邦创科(惠州市)智能科技有限公司 | Three-phase delta-Y type isolated safe power supply system |
| CN113300363A (en) * | 2021-07-26 | 2021-08-24 | 湖南一二三智能科技有限公司 | Safe power utilization 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: 20131030 Termination date: 20210529 |