CN1848580A - Leakage plug with fireproof function - Google Patents
Leakage plug with fireproof function Download PDFInfo
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- CN1848580A CN1848580A CN 200610034018 CN200610034018A CN1848580A CN 1848580 A CN1848580 A CN 1848580A CN 200610034018 CN200610034018 CN 200610034018 CN 200610034018 A CN200610034018 A CN 200610034018A CN 1848580 A CN1848580 A CN 1848580A
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
An electric leakage plug with fire proof function consists of plug, tripping unit, zero sequence current sampling unit, current sampling unit, preprocessing unit, data processor, execution unit, alarm unit, voltage sampling unit and zero sequence mutual inductor. It is featured as connecting said mutual inductor and current sampling unit separately to input end of preprocessing unit with its output end being connected directly to input end of data processor, connecting output end of data processor separately to input ends of tripping unit and alarm unit.
Description
Technical field:
The present invention relates to a kind of leakage plug that is applied in the residual current protecting that has arc fault and loose contact measuring ability, specifically is to belong to a kind of leakage plug with fire-proof function.
Background technology:
At present, existing leakage plug is applicable to usually and exchanges in the 50HZ circuit, the leakage plug that is connected with power supply as the electrical appliance of single phase power supply.Earth leakage protective device can only detect between loaded line phase, the zero line and have or not residual current, cuts off the electricity supply when residual current and when reaching a certain numerical value.The human electric shock is shielded, prevent from simultaneously to cause electrical fire because of Leaked Current of Line to Ground.Existing product can not be found the arc fault between the phase, zero and the loose contact of circuit, two kinds of potential faults that can cause electrical fire.
Summary of the invention:
The present invention is for overcoming above-mentioned deficiency, and a kind of leakage current that can detect is provided, and simultaneously, also can detect arc fault, the circuit loose contact between zero mutually, and current overload, can effectively prevent the leakage plug of the band fire-proof function that electrical fire takes place.
The technical scheme that realizes the object of the invention is: it comprises header body; trip gear; the zero-sequence current sampling apparatus; it is characterized in that: also comprise current sampling device; the pre-process unit; data processor; performance element is a trip gear; warning device; voltage sampling unit and lightning surge protected location are selectable units; zero-sequence transformer links to each other with the input of pre-process unit respectively with current sampling device; its output directly is connected with the data processor input port; the output of data processor respectively with trip gear; the input of warning device is connected; optionally the voltage sampling unit links to each other with the input of alternating current circuit and data processor or pre-process unit; the lightning surge protected location connects between phase line and the zero line, or between phase line and the ground wire.
Advantage of the present invention is that creepage protection function is arranged; the fault electric arc defencive function; bad connection defencive function and overload protection function and optional lightning surge defencive function; effectively prevent the electrical fire that causes because of leak current fault electric arc, electric spark and overvoltage; product can directly be replaced original plug, or leakage protecting plug.
Description of drawings:
Fig. 1 is a principle of the invention block diagram;
Fig. 2 is the circuit diagram of the embodiment of the invention 1;
Fig. 3 is the circuit diagram of the embodiment of the invention 2;
Fig. 4 is the circuit diagram of the embodiment of the invention 3;
Fig. 5 is the circuit diagram of the embodiment of the invention 4.
Embodiment:
Below in conjunction with accompanying drawing technical scheme of the present invention is further described:
Embodiment 1
With reference to Fig. 2, present embodiment is to consist of a single unit system by trip gear 2, zero-sequence transformer 3, current sampling device 4, pre-process unit 5, data processor 6, warning device 7.Described alarm unit 7 is made up of LED and buzzer, can sound and light alarm.Described pre-process unit 5 is made up of filter network and operational amplifier U1, U2, be used for current signal amplitude be transformed into data processor acceptable amplitude.The output of trip gear 2, zero-sequence transformer 3, current sampling device 4 is connected with input AD0, the AD1 of data processor 6 by pre-process unit 5 respectively, and the output IO2 of data processor 6 is connected with the input of warning device 7.With reference to Fig. 2; zero-sequence transformer 3, current sampling device 4 are connected with pre-process unit 5; gather leakage current signal by zero-sequence transformer 3; after pre-process unit 5 amplifies, send into data processor 6 inner AD and gather, and judge size of current by data processor 6; and protect by protective current and the operate time of protection set; send the instruction of threading off by data processor 6 during protection, behind the dropout drive part, the control release is threaded off.The current value that is collected by current sampling device 4 send pre-process unit 5 to give processing, pre-process unit 5 is connected with analog-to-digital conversion pin AD0, the AD1 of data processor 6, current signal is become data processor 6 acceptable signals, gather and the processing current data by data processor 6, and do waveform analysis.The analog-to-digital conversion pin IO2 of data processor 6 is connected with warning device, the result of amperometry and set point is compared the comparative result alarm device of delivering newspaper.
Operation principle: data processor 6 reads current data from zero-sequence transformer 3, current sampling device 4; and do waveform analysis; after filtering normal harmonic wave; remaining clutter is done integral operation, discharge computing, again the value that draws is carried out fuzzy logic processes, and judge size of current by data processor 6; and protect by protective current and the operate time of protection set; send the instruction of threading off by data processor 6 during protection, behind the dropout drive part, the control release is threaded off.Described current sampling device adopts small-power instrument transformer or splitter.
See shown in the accompanying drawing 3 that embodiment 2 is identical with embodiment 1 structure, just also comprise lightning surge protected location 9, lightning surge protected location 9 connects between phase line and the zero line.Certainly the lightning surge protected location also can be connected (figure does not show) between phase line and the ground wire.
See shown in the accompanying drawing 4 that embodiment 3 is identical with embodiment 1 structure, just also comprise voltage sampling unit 8, voltage sampling unit 8 and alternating current circuit and data processor 6.The voltage sampling unit also can be connected the input (figure does not show) of pre-process unit 5 certainly.
See shown in accompanying drawing 1, the accompanying drawing 5 that embodiment 4 is identical with embodiment 1 structure, comprise also that just lightning surge protected location 9 and voltage sampling unit 8,9 connect between phase line and the zero line voltage sampling unit 8 and alternating current circuit and data processor 6.Certainly similar embodiment 2, embodiment 3 are described, the input that the lightning surge protected location is connected between phase line and the ground wire, the voltage sampling unit is connected pre-process unit 5.
The embodiment of the above is preferred embodiment of the present invention only, is not to limit practical range of the present invention with this, so the equivalence that all shapes according to the present invention, structure and principle are done changes, all should be covered by in protection scope of the present invention.
Claims (3)
1, the leakage plug of band fire-proof function, it comprises header body (1), trip gear (2), zero-sequence transformer (3), it is characterized in that: also comprise current sampling device (4), pre-process unit (5), data processor (6), performance element is trip gear (2), warning device (7), zero-sequence transformer (3) links to each other with the input of pre-process unit (5) respectively with current sampling device (4), its output directly is connected with data processor (6) input port, the output of data processor (6) respectively with trip gear (2), the input of warning device (7) is connected.
2, the leakage plug of band fire-proof function according to claim 1 is characterized in that: also include voltage sampling unit (8), voltage sampling unit (8) link to each other with the input of alternating current circuit and data processor (6) or pre-process unit (5).
3, the leakage plug of band fire-proof function according to claim 1 is characterized in that: also include lightning surge protected location (9), lightning surge protected location (9) connects between phase line and the zero line, or between phase line and the ground wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610034018 CN1848580A (en) | 2006-03-03 | 2006-03-03 | Leakage plug with fireproof function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610034018 CN1848580A (en) | 2006-03-03 | 2006-03-03 | Leakage plug with fireproof function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1848580A true CN1848580A (en) | 2006-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610034018 Pending CN1848580A (en) | 2006-03-03 | 2006-03-03 | Leakage plug with fireproof function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1848580A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989722A (en) * | 2010-12-02 | 2011-03-23 | 饶学进 | Power socket with leakage current measurement protective device |
| CN103066456A (en) * | 2012-11-27 | 2013-04-24 | 钱加灿 | Protective plug capable of checking leakage of electricity |
| CN110896210A (en) * | 2018-09-12 | 2020-03-20 | 简树 | Single-phase electric leakage circuit breaker control system |
-
2006
- 2006-03-03 CN CN 200610034018 patent/CN1848580A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989722A (en) * | 2010-12-02 | 2011-03-23 | 饶学进 | Power socket with leakage current measurement protective device |
| CN103066456A (en) * | 2012-11-27 | 2013-04-24 | 钱加灿 | Protective plug capable of checking leakage of electricity |
| CN103066456B (en) * | 2012-11-27 | 2014-12-10 | 钱加灿 | Protective plug capable of checking leakage of electricity |
| CN110896210A (en) * | 2018-09-12 | 2020-03-20 | 简树 | Single-phase electric leakage circuit breaker control system |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |