CN102332702B - Intelligent real-time on-line displaying and controlling leakage protector and control method thereof - Google Patents
Intelligent real-time on-line displaying and controlling leakage protector and control method thereof Download PDFInfo
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Abstract
The invention relates to an intelligent real-time on-line displaying and controlling leakage protector which comprises a control panel, wherein a wire inlet interface and a wire outlet interface are arranged at the end part of the control panel; a zero sequence transducer, a shunt releaser, an operating mechanism and a controller are arranged in the control panel; a leakage current display screen is arranged on the control panel; a tripping mode and a tripping mode selecting unit are arranged in the controller; the tripping mode comprises a forcing non-tripping mode, a delayed tripping mode and a normal tripping mode; the tripping mode selecting unit is used for selecting the tripping mode according to the size of a leakage current detected by the zero sequence transducer and switching among the modes according to the change of the detected leakage current. The invention provides an intelligent real-time on-line displaying and controlling leakage protector which is used for solving the technical problems of a breaker in the prior art that an instantly increased leakage current is subjected to tripping, service life of equipment is influenced, working efficiency is reduced and treatment cannot be performed according to specific working conditions.
Description
Technical field
The present invention relates to a kind of broken circuit protecting equipment, the specifically aobvious control of a kind of real-time online leakage intelligent protector.
Background technology
Broken circuit protecting equipment refers to the electric current that can close, carry and cut-off under normal loop condition, and can close, in official hour, carry and cut-off the switching device of the electric current under abnormal loop condition (comprising short circuit condition).In common circuit, generally all there is leakage current, do not having fault to execute in alive situation, between the metal parts of electric middle mutually insulated, or between band electrical accessory and ground connection part, by its surrounding medium or the formed electric current of insulating surface, be called leakage current, be also called leakage current.Leakage current is excessive, has not only reduced the efficiency of electric energy, also can cause danger to external environment condition, easily causes the generation of electric shock accidents, therefore very necessary to the monitoring of leakage current.Residual current circuit breaker refers to the switch of energy auto-action when leakage current surpasses predetermined value in circuit, and it can detect the leakage current in circuit, and moves according to the size of leakage current, thereby guarantees the safety of whole circuit.
As disclosed a kind of intelligent breaker in Chinese patent literature CN201117610Y, comprise CPU CPU and connected zero-sequence transformer, shunt release, motor restart, reclosing judging unit, also comprise current transformer, communication unit, display unit, memory cell, clock unit, key-press input unit, each cell arrangement is connected with the respective pins in CPU CPU.In this technical scheme, described circuit breaker can be to line load operational factor as Real-Time Monitoring, storage, analysis, demonstrations such as voltage, electric current, leakage currents.Under some operational environment, can frequently there is instantaneous increase in the leakage current in circuit, situation about automatically recovering again afterwards, now, if the time that leakage current increases is very short, even if not disconnecting also, circuit breaker can not impact loop, if the time that still leakage current increases is longer, can impact the voltage in loop, need cut-off breaker.A kind of adjustable intelligent control device of residual current circuit breaker is disclosed in Chinese patent literature CN201877813U, comprise signal filtering amplifying circuit, single-chip microcomputer, dropout control circuit, toggle switch circuit, the input of signal filtering amplifying circuit is connected with the zero sequence current mutual inductor of residual current circuit breaker, the output of dropout control circuit is connected with the release of residual current circuit breaker, toggle switch circuit is connected with the parameter modification signal end of single-chip microcomputer, and the alarm signal output ends of single-chip microcomputer is connected with the warning device of residual current circuit breaker.In this technical scheme, can accurately set delay time by single-chip microcomputer, can revise easily the relevant parameter that is stored in the control program in single-chip microcomputer by toggle switch circuit and regulate delay time and electric leakage signal fiducial value, but this residual current circuit breaker is when judging whether time delay, that mode by time delay collection signal realizes, when the signal collecting is greater than predefined threshold value, to after time delay a period of time, again gather, if the new signal gathering is not more than predetermined threshold value, do not thread off, if the new signal gathering is still greater than predetermined threshold value, controlling release disconnects.The problem existing is only in the moment of collection signal, to be greater than threshold value and when other are less than described threshold value constantly when leakage current signal, described residual current circuit breaker still can cutoff circuit, circuit breaker can only carry out ceaselessly switch motion for this situation, not only affect the useful life of equipment, also reduced operating efficiency.
In addition,, under some working condition, especially in process of production, even if leakage current surpasses certain scope, line disconnection at once, not so can cause economic loss even to have an accident.A kind of residual current circuit breaker with warning device is disclosed in Chinese patent literature CN2703349Y, comprise zero-sequence transformer circuitry for signal measurement, leakage current is differentiated comparison circuit, trip gear, described zero-sequence transformer circuitry for signal measurement differentiates that with leakage current comparison circuit is connected, leakage current differentiates that comparison circuit is connected with trip gear, leakage current differentiates that the connection of comparison circuit rear end arranges conversion selecting switch SW-SPDT, conversion selecting switch SW-SPDT and warning device circuit, trip gear joins, this residual current circuit breaker can be selected to report to the police and thread off, realized the function of an alarm non-tripping, be suitable for can not power-off in work engineering situation.
In above-mentioned document, the technical scheme that has provided respectively circuit breaker delayed releasing and forced not thread off, and for some equipment, as the equipment in Medical Devices or streamline production, in its course of work in order to ensure safety, can not thread off, in its standby process, if line electrical leakage stream is unstable, in order to improve it, treat engine efficiency and need delayed releasing, when in circuit, leakage current is stablized, can normally thread off, therefore need in different tripping-modes, switch, technique scheme cannot be in conjunction with the automatic switchover realizing between various modes, can not meet the demand of this special operation condition, cannot adapt to its real needs in industrial production.
Summary of the invention
For this reason; technical problem to be solved by this invention is that the leakage current that circuit breaker of the prior art increased moment carries out the useful life of threading off, affect equipment, the technical problem that reduces operating efficiency, can not process according to special operation condition, thereby proposes the aobvious leakage intelligent protector of controlling of a kind of real-time online.
For solving the problems of the technologies described above, the aobvious control of real-time online of the present invention leakage intelligent protector, comprise control panel, the end of described control panel is provided with inlet wire interface and goes out line interface, the inside of described control panel is provided with zero-sequence transformer, shunt release, operating mechanism and controller, the operating grip of described operating mechanism stretches out outside control panel, on described control panel, be provided with leakage current display screen, described controller and described zero-sequence transformer, described shunt release is connected respectively with described leakage current display screen, in described controller, be provided with tripping-mode and tripping-mode selected cell, described tripping-mode comprises forces not tripping-mode, delayed releasing pattern and normal tripping-mode, the size of the leakage current that described tripping-mode selected cell detects according to described zero-sequence transformer is selected above-mentioned tripping-mode, and switch between above-mentioned pattern according to the situation of change of the leakage current detecting.
On described control panel, be provided with leakage current threshold value and select knob, described leakage current threshold value selects knob to be connected with described controller, and the threshold value of leakage current is arranged.
Be connected with a warning device with described controller, when the value of described leakage current surpasses predefined threshold value, described alarm activation.
On described control panel, be provided with tripping-mode set mechanism, described tripping-mode set mechanism is connected with described controller, and described tripping-mode set mechanism arranges described tripping-mode selected cell.
On described control panel, being provided with delayed releasing sets up an organization, described delayed releasing sets up an organization and is connected with described controller, described delayed releasing sets up an organization and can to the delay time in described delayed releasing timing unit, arrange by controller, and described delay time is 0.3s-0.5s.
Described controller connects a memory, leakage current value when described memory moves for storing described shunt release, and show by described leakage current display screen.
Described memory is also manual operation or leakage current is excessive threads off when recording described dropout action executing, and controller is crossed dropout movement memory display unit by the information exchange recording in described memory and shown.
Described controller also connects a remote display unit, described remote display unit and described leakage current display screen simultaneous display.
A control method for the aobvious control of real-time online leakage intelligent protector, comprises the following steps:
(1) by inlet wire interface and going out in line interface line attachment, leakage current in described zero-sequence transformer detection line, and by the leakage current communication detecting to controller, in described controller, set in advance leakage current threshold value, described controller is presented at described leakage current value on described leakage current display screen in real time;
(2) pre-stored in described controller have an equipment working state in circuit, the leakage current value range of holding state, the leakage current information that described tripping-mode selected cell detects according to the described zero-sequence transformer receiving, the residing operating state of equipment in judgement circuit, within the scope of the in running order leakage current of described leakage current information, the described controller of described tripping-mode selected cell is set to the described pressure module of not threading off, if leakage current surpasses default leakage current threshold value, described controller not sending controling instruction is given described shunt release, described shunt release is failure to actuate,
(3) when the numerical value of the leakage current detecting when described zero-sequence transformer changes, described tripping-mode selected cell switches described tripping-mode according to the numerical value of described leakage current, when leakage current number range in holding state of the numerical value of the described leakage current detecting, the tripping-mode that described tripping-mode selected cell switches described controller is described normal dropout module, if leakage current surpasses default described leakage current threshold value, described controller is controlled described shunt release action open-circuit line;
(4) when the size of the leakage current detecting when described zero-sequence transformer produces momentary fluctuation, the tripping-mode that described tripping-mode selected cell switches described controller is described delayed releasing pattern, in described delayed releasing pattern, be provided with delay time, if the leakage current value that described zero-sequence transformer detects surpasses the duration of described leakage current threshold value and reaches after described delay time, described controller is controlled described shunt release and is threaded off.
In said process, when described shunt release action, described controller is saved in the leakage current value that now described zero-sequence transformer detects in memory; When manually when pulling described operating grip to control described operating mechanism open-circuit line, described operating mechanism is to described controller transmitted signal, dropout action flag bit in described controller memory is set to 1, when described controller is controlled described shunt release open-circuit line, described dropout action flag bit in the described memory of described controller is set to 0, and described dropout movement memory display unit shows according to described dropout action flag bit.
Technique scheme of the present invention has the following advantages compared to existing technology,
(1) real-time online of the present invention aobvious control leakage intelligent protector and control method thereof, comprise inlet wire interface, go out line interface, zero-sequence transformer, shunt release, operating mechanism and controller, in described controller, be provided with tripping-mode and tripping-mode selected cell, described tripping-mode comprises forces not tripping-mode, delayed releasing pattern and normal tripping-mode, the size of the leakage current that described tripping-mode selected cell detects according to described zero-sequence transformer is selected above-mentioned tripping-mode, and switch between above-mentioned pattern according to the situation of change of the leakage current detecting, automatic selection to described tripping-mode like this, according to the different tripping-mode that automatically switches of equipment working state in circuit, can automatically adjust tripping-mode by real-time online, solved and can not automatically select the technical problem of tripping-mode in prior art, demand applicable to required special operation condition, misoperation while having avoided Artificial Control.
(2) the aobvious control of real-time online of the present invention leakage intelligent protector; on described control panel, be provided with leakage current threshold value and select knob; described leakage current threshold value selects knob to be connected with described controller; threshold value to leakage current arranges, and the threshold value to described leakage current when convenient for users like this regulates.
(3) the aobvious control of real-time online of the present invention leakage intelligent protector; be connected with a warning device with described controller; when described leakage current value while surpassing predefined threshold value; described alarm activation; like this, especially, in the situation that leakage current surpasses threshold value but do not thread off, warning device can be pointed out on-the-spot staff; notify them to process, guarantee the safety of circuit.
(4) the aobvious control of real-time online of the present invention leakage intelligent protector; on described control panel, be provided with tripping-mode set mechanism; described tripping-mode set mechanism is connected with described controller; can arrange described tripping-mode; for the ease of Artificial Control; on described control panel, be provided with the set mechanism of artificial selection tripping-mode, can enter artificial setting.
(5) the aobvious control of real-time online of the present invention leakage intelligent protector, on described control panel, being provided with delayed releasing sets up an organization, described delayed releasing sets up an organization and is connected with described controller, described delayed releasing sets up an organization and can to the delay time in described delayed releasing timing unit, arrange by controller, described delay time is 0.3s-0.5s, guaranteed that circuit can be due to the increase of instantaneous leakage current frequently threads off, can be because leakage current is dangerous over the long circuit that causes of threshold time yet, by this mechanism, its delay time can be manually set, simple and convenient and quick.
(6) the aobvious control of real-time online of the present invention leakage intelligent protector; described controller connects a memory; leakage current value when described memory moves for storing described shunt release; and show by leakage current display screen; leakage current value when being convenient to manual observation and threading off its last time; for field personnel adjusts reference is provided described leakage current threshold value, the situation while simultaneously contributing to Field Force to understand described circuit breaker tripping.
(7) the aobvious control of real-time online of the present invention leakage intelligent protector; described memory is also manual operation or leakage current is excessive threads off when recording described dropout action executing; controller is crossed described dropout movement memory display unit by the information exchange recording in described memory and is shown; being convenient to Field Force, to understand that circuit disconnects be that manual operation or dropout shunt opening disconnect, and then understand current operating mode.
(8) the aobvious control of real-time online of the present invention leakage intelligent protector; described controller also connects a remote display unit; described remote display unit and described leakage current display screen simultaneous display; when the aobvious control of described real-time online leakage intelligent protector installs in rack; can show by remote display unit and the real time information of its leakage current facilitate on-the-spot staff.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structured flowchart of the aobvious control of real-time online of the present invention leakage intelligent protector;
Fig. 2 is the structured flowchart of another embodiment of the aobvious control of real-time online of the present invention leakage intelligent protector;
Fig. 3 is the structural representation of the aobvious control of real-time online of the present invention leakage intelligent protector;
Fig. 4 is the circuit diagram of the aobvious control of real-time online of the present invention leakage intelligent protector.
In figure, Reference numeral is expressed as: 1-control panel, 2-inlet wire interface, 3-goes out line interface, and 4-leakage current threshold value is selected knob, 5-operating grip, 6-leakage current display screen, 7-tripping-mode set mechanism, 8-warning device, 9-delayed releasing sets up an organization, 11-dropout movement memory display unit, 12-remote display unit.
Embodiment
Provide the concrete execution mode of the aobvious control of real-time online of the present invention leakage intelligent protector below.
embodiment 1:
As shown in Figure 1, the aobvious control of a kind of real-time online leakage intelligent protector, comprises control panel 1, and described control panel 1 is for associative operation unit is set, user-friendly; The two ends of described control panel 1 are provided with inlet wire interface 2 and go out line interface 3, the inside of described control panel 1 is provided with zero-sequence transformer, shunt release, operating mechanism and controller, described zero-sequence transformer is for detection of the leakage current in circuit, described shunt release is for the instruction open-circuit line of implementation controller, operating mechanism is opened or closed-loop path for hand control, the operating grip 5 of described operating mechanism stretches out outside control panel 1, and user is by moving operating grip 5 close loop or cutoff circuit.On described control panel 1, be provided with leakage current display screen 6, for showing in real time the leakage current numerical value that described zero-sequence transformer detects.Described controller is connected respectively with described zero-sequence transformer, described shunt release and described leakage current display screen 6, at this, selects CPU control chip as controller, and it powers electric power source pair of module that can be by independent setting.In described controller, by programming, there are tripping-mode and tripping-mode selected cell, described tripping-mode comprises forces not tripping-mode, delayed releasing pattern and normal tripping-mode, the size of the leakage current that described tripping-mode selected cell detects according to described zero-sequence transformer is selected above-mentioned tripping-mode, and switches between above-mentioned pattern according to the situation of change of the leakage current detecting.
The control method of the aobvious control of the real-time online leakage intelligent protector described in the present embodiment is as follows:
(1) by inlet wire interface 2 with go out in line interface 3 line attachments, as access in three-phase AC line, operating grip 5 by the operating mechanism circuit that closes, after circuit is connected, leakage current in described zero-sequence transformer detection line, and by the leakage current communication detecting to controller, in described controller, set in advance leakage current threshold value, described controller is presented at described leakage current value on described leakage current display screen 6 in real time;
(2) pre-stored in described controller have an equipment working state in circuit, the leakage current number range of holding state, number range herein presets according to working equipment concrete in its circuit and operational environment, the leakage current information that described tripping-mode selected cell detects according to the described zero-sequence transformer receiving, the residing operating state of equipment in judgement circuit, in the in running order leakage current number range of the described leakage current value detecting, the described controller of described tripping-mode selected cell is set to force not thread off module, when leakage current surpasses default described leakage current threshold value, described controller not sending controling instruction is given described shunt release, described shunt release is failure to actuate,
(3) when the numerical value of the leakage current detecting when described zero-sequence transformer changes, described tripping-mode selected cell switches described tripping-mode according to the numerical value of described leakage current, when leakage current number range in holding state of the numerical value of the described leakage current detecting, the tripping-mode that described tripping-mode selected cell switches described controller is normal dropout module, when leakage current surpasses default leakage current threshold value, described controller is controlled described shunt release action open-circuit line;
(4) when the numerical value of the leakage current detecting when described zero-sequence transformer produces momentary fluctuation, the tripping-mode that described tripping-mode selected cell switches described controller is delayed releasing pattern, in described delayed releasing pattern, be provided with delay time, the duration that surpasses threshold value when leakage current value that described zero-sequence transformer detects reaches after described delay time, and described controller is controlled described shunt release and threaded off.
In said process, the variation of the leakage current numerical value that described controller can detect according to described zero-sequence transformer, switches described tripping-mode, has realized control and the demonstration of real-time online.
embodiment 2:
As shown in Figure 2 and Figure 3, on the basis of above-described embodiment, be further provided with leakage current threshold value and select knob 4 on described control panel, described leakage current threshold value selects knob 4 to be connected with described controller, and the threshold value of leakage current is arranged, can also be connected a warning device 8 is set with described controller, when the value of described leakage current surpasses predefined described leakage current threshold value, described warning device 8 starts, especially forcing under the pattern of not threading off, by warning device 8 Field Force, can understand in time field condition, facilitate it to process in time, the generation of minimizing accident, setting in order to be user-friendly to, can on described control panel 1, tripping-mode set mechanism 7 be set, described tripping-mode set mechanism 7 is connected with described controller, can arrange described tripping-mode, like this, described tripping-mode can arrange according to user's needs, the delay time of delayed releasing is set for the ease of user, on described control panel 1, be provided with delayed releasing and set up an organization 9, described delayed releasing sets up an organization and 9 is connected with described controller, described delayed releasing sets up an organization and 9 can to the delay time in described delayed releasing timing unit, arrange by controller, and described delay time is 0.3s-0.5s, leakage current information while threading off for the ease of record, being convenient to staff adjusts leakage current threshold value, described controller can connect a memory, leakage current value when described memory moves for storing described shunt release, and show by leakage current display screen 6, in said process, when described shunt release action, described controller is saved in the leakage current value that now described zero-sequence transformer detects in memory, leakage current value when Field Force can know circuit disjunction by leakage current display screen 6, be convenient to the setting of described leakage current threshold value and adjustment, operating grip 5 cutoff circuits that can be by hand control operating mechanism due to the aobvious control of described real-time online leakage intelligent protector also can move open-circuit line by shunt release, described memory can also be manual operation or leakage current is excessive threads off when recording described dropout action executing, controller is crossed described dropout movement memory display unit 11 by the information exchange recording in described memory and is shown, when manually when pulling described operating grip 5 to control described operating mechanism open-circuit line, described operating mechanism is to described controller transmitted signal, dropout action flag bit in described controller memory is set to 1, when described controller is controlled described shunt release open-circuit line, dropout action flag bit in the described memory of described controller is set to 0, described dropout movement memory display unit 11 shows according to described dropout action flag bit, said dropout movement memory display unit 11 is set to indicator light and shows, when indicator light is green, represent shunt release action cutoff circuit, when indicator light is redness, represent operating mechanism cutoff circuit, described controller arranges the color of indicator light according to the value of the action flag bit of threading off, be convenient to staff and understand current information, in order to improve its Presentation Function, when being contained in rack, the aobvious control of described real-time online leakage intelligent protector also can show in real time its leakage current information, described controller also connects a remote display unit 12 by holding wire, described remote display unit 12 and described leakage current display screen 6 simultaneous displays, described remote display unit 12 can be arranged on appropriate location as required, is convenient to Field Force and observes.The function that has so just strengthened the aobvious control of described real-time online leakage intelligent protector, makes its scope of application more extensive, better effects if.As Fig. 4 has provided the aobvious circuit diagram of controlling leakage intelligent protector of real-time online of the present invention.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to execution mode.To those of ordinary skill in the art, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all execution modes.And the apparent variation of being extended out thus or change are still among the protection range in the invention.
Claims (10)
1. a real-time online shows control leakage intelligent protector; comprise control panel; the end of described control panel is provided with inlet wire interface and goes out line interface; the inside of described control panel is provided with zero-sequence transformer, shunt release, operating mechanism and controller; the operating grip of described operating mechanism stretches out outside control panel; on described control panel, be provided with leakage current display screen; described controller is connected respectively with described zero-sequence transformer, described shunt release and described leakage current display screen, it is characterized in that:
In described controller, be provided with tripping-mode and tripping-mode selected cell,
Described tripping-mode comprises forces not tripping-mode, delayed releasing pattern and normal tripping-mode,
The size of the leakage current that described tripping-mode selected cell detects according to described zero-sequence transformer is selected above-mentioned tripping-mode, and switches between above-mentioned pattern according to the situation of change of the leakage current detecting; The leakage current information that described tripping-mode selected cell detects according to the described zero-sequence transformer receiving, the residing operating state of equipment in judgement circuit, in the in running order leakage current number range of the described leakage current numerical value detecting, the described controller of described tripping-mode selected cell is set to the described pressure module of not threading off; When leakage current number range in holding state of the numerical value of the described leakage current detecting, the tripping-mode that described tripping-mode selected cell switches described controller is described normal dropout module; When the size of the leakage current detecting when described zero-sequence transformer produces momentary fluctuation, the tripping-mode that described tripping-mode selected cell switches described controller is described delayed releasing pattern.
2. real-time online according to claim 1 shows control leakage intelligent protector; it is characterized in that: on described control panel, be provided with leakage current threshold value and select knob; described leakage current threshold value selects knob to be connected with described controller, and the threshold value of leakage current is arranged.
3. real-time online according to claim 1 and 2 shows control leakage intelligent protector, it is characterized in that: be connected with a warning device with described controller, and when the value of described leakage current surpasses predefined threshold value, described alarm activation.
4. real-time online according to claim 1 shows control leakage intelligent protector; it is characterized in that: on described control panel, be provided with tripping-mode set mechanism; described tripping-mode set mechanism is connected with described controller, can arrange described tripping-mode.
5. real-time online according to claim 1 shows control leakage intelligent protector; it is characterized in that: on described control panel, be provided with delayed releasing and set up an organization; described delayed releasing sets up an organization and is connected with described controller; described delayed releasing sets up an organization and can to the delay time in described delayed releasing timing unit, arrange by controller, and described delay time is 0.3s-0.5s.
6. real-time online according to claim 5 shows control leakage intelligent protector; it is characterized in that: described controller connects a memory; leakage current value when described memory moves for storing described shunt release, and show by described leakage current display screen.
7. real-time online according to claim 6 shows control leakage intelligent protector; it is characterized in that: described memory is also manual operation or leakage current is excessive threads off when recording described dropout action executing, and controller is crossed dropout movement memory display unit by the information exchange recording in described memory and shown.
8. according to the aobvious control of the real-time online described in any one in claim 1 or 2 or 4 or 5 or 6 or 7 leakage intelligent protector; it is characterized in that: described controller also connects a remote display unit described remote display unit and described leakage current display screen simultaneous display.
9. in claim 1-8, the real-time online described in any one shows a control method of controlling leakage intelligent protector, comprises the following steps:
(1) by inlet wire interface and going out in line interface line attachment, operating grip by the operating mechanism circuit that closes, after circuit is connected, leakage current in described zero-sequence transformer detection line, and by the leakage current communication detecting to controller, in described controller, set in advance leakage current threshold value, described controller is presented at described leakage current value on described leakage current display screen in real time;
(2) pre-stored in described controller have an equipment working state in circuit, the leakage current number range of holding state, the leakage current information that described tripping-mode selected cell detects according to the described zero-sequence transformer receiving, the residing operating state of equipment in judgement circuit, in the in running order leakage current number range of the described leakage current numerical value detecting, the described controller of described tripping-mode selected cell is set to the described pressure module of not threading off, when leakage current surpasses default described leakage current threshold value, described controller not sending controling instruction is given described shunt release, described shunt release is failure to actuate,
(3) when the numerical value of the leakage current detecting when described zero-sequence transformer changes, described tripping-mode selected cell switches described tripping-mode according to the numerical value of described leakage current, when leakage current number range in holding state of the numerical value of the described leakage current detecting, the tripping-mode that described tripping-mode selected cell switches described controller is described normal dropout module, when leakage current surpasses default leakage current threshold value, described controller is controlled described shunt release action open-circuit line;
(4) when the size of the leakage current detecting when described zero-sequence transformer produces momentary fluctuation, the tripping-mode that described tripping-mode selected cell switches described controller is described delayed releasing pattern, in described delayed releasing pattern, be provided with delay time, the duration that surpasses described leakage current threshold value when leakage current value that described zero-sequence transformer detects reaches after described delay time, and described controller is controlled described shunt release and threaded off.
10. real-time online according to claim 9 shows the control method of control leakage intelligent protector, it is characterized in that: also comprise, when described shunt release action, described controller is saved in the leakage current value that now described zero-sequence transformer detects in memory; When manually when pulling described operating grip to control described operating mechanism open-circuit line, described operating mechanism is to described controller transmitted signal, dropout action flag bit in described controller memory is set to 1, when described controller is controlled described shunt release open-circuit line, described dropout action flag bit in the described memory of described controller is set to 0, and described dropout movement memory display unit shows according to described dropout action flag bit.
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| CN104217871A (en) * | 2013-06-05 | 2014-12-17 | 施耐德电器工业公司 | Multifunctional isolating switch |
| CN104577944B (en) * | 2013-10-15 | 2017-12-15 | 西门子公司 | Residual current device |
| CN105870879B (en) * | 2016-04-27 | 2018-05-04 | 国网安徽省电力公司六安市叶集供电公司 | A kind of low-voltage leakage switchs intelligent monitoring method |
| CN107171283A (en) * | 2017-07-12 | 2017-09-15 | 保定市尤耐特电气有限公司 | A kind of new type electric leakageproof device |
| CN107976606B (en) * | 2018-01-06 | 2020-05-26 | 河北农业大学 | Leakage protection monitoring device and detection method thereof |
| CN113363935A (en) * | 2021-06-21 | 2021-09-07 | 慈溪市一栋电子有限公司 | Leakage protector |
| CN113963997B (en) * | 2021-09-27 | 2023-12-26 | 德力西电气有限公司 | Circuit breaker capable of automatically selecting overload protection mode |
| CN115719999B (en) * | 2022-11-22 | 2023-06-23 | 广东正力通用电气有限公司 | Power supply line leakage monitoring terminal |
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| CN101933112A (en) * | 2008-01-31 | 2010-12-29 | 伊顿公司 | Manually selectable instantaneous current settings for a trip unit and electrical switching apparatus including the same |
-
2011
- 2011-09-15 CN CN201110272657.XA patent/CN102332702B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6144271A (en) * | 1999-08-18 | 2000-11-07 | Eaton Corporation | Circuit breaker with easily installed removable trip unit |
| CN201117610Y (en) * | 2007-08-24 | 2008-09-17 | 郭黎 | Intelligent circuit breaker |
| CN101933112A (en) * | 2008-01-31 | 2010-12-29 | 伊顿公司 | Manually selectable instantaneous current settings for a trip unit and electrical switching apparatus including the same |
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| CN102332702A (en) | 2012-01-25 |
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