CN2453568Y - Electric power supply plug for preventing it from being leakage, over-voltage, over-load, short circuit and lightninhg-stroke - Google Patents
Electric power supply plug for preventing it from being leakage, over-voltage, over-load, short circuit and lightninhg-stroke Download PDFInfo
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- CN2453568Y CN2453568Y CN 00241107 CN00241107U CN2453568Y CN 2453568 Y CN2453568 Y CN 2453568Y CN 00241107 CN00241107 CN 00241107 CN 00241107 U CN00241107 U CN 00241107U CN 2453568 Y CN2453568 Y CN 2453568Y
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Abstract
The utility model relates to a protection power supply plug for electrical leakage, excess voltage, overload, short circuit, and lightning strike. The utility model is characterized in that a power source terminal line led in by the plug is provided with a trip separator, zero sequence current mutual inductor, a voltage-dividing resistor, a current mutual inductor, and an insurance resistor, and is connected with a ground line E by a voltage dependent resistor; a close button of the trip separator is exposed at the external of a casing of the plug; a silicon controlled rectifier is connected in series in a coil power supply circuit of the trip separator; a control end of the trip separator is connected with a signal output terminal of each detection circuit. A plug type structure of the utility model causes the utility model to be matched with electric appliances.
Description
The utility model relates to a kind of electrical appliance protective device.More particularly, be a kind of attaching plug with electric leakage, overvoltage, overload, short circuit and lightning strike protection comprehensive function.
As everyone knows, the key factor that influences electrical appliance normal useful life comprises overvoltage, overload, short circuit and thunderbolt etc., and causing electrical appliance to use unsafe is electric leakage.In the prior art, though at the existing respectively various safeguard measures of overvoltage, overload, short circuit and problems such as thunderbolt and electric leakage, the device with integrated protection function often complex structure, volume is big, cost is high, fail to apply.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art, provide a kind of have the integrated protection function, simple in structure, cost is low, use is reliable, can extensively be provided on the various electrical appliances normal electric leakage, overvoltage, overload, short circuit and the lightning strike protection attaching plug that uses.
The purpose of this utility model is achieved through the following technical solutions:
Design feature of the present utility model is that dropout separator, leakage current detection zero sequence current mutual inductor LH1, overvoltage divider resistance R3, R4, overload and short-circuit detecting current transformer LH2 are set on the power supply end line N, the L that are introduced by plug, insure resistance R F1, RF2, and be connected with earth connection E by piezo-resistance RV1, RV2; Described dropout separator, its button AN exposes the outside at plug casing, and series connection is provided with bidirectional triode thyristor KS, the signal output part of each testing circuit of control termination of controllable silicon KS in the electric power loop of its coil F.
Design feature of the present utility model also is:
At the pulse signal generation circuit that the induced signal output setting of described zero sequence current mutual inductor LH1 is made of capacitor C 1, C2, C3 and resistance R 1, R2, the control termination capacitor C 3 of controllable silicon KS and the link of capacitor C 1.
The dividing potential drop output signal of described divider resistance R3, R4 connects the control end of controllable silicon KS by bidirectional trigger diode ST.
Induced signal output at described current transformer LH2 is provided with rectifier bridge QL, rectification output signal one tunnel is transshipped on resistance R 7, R8 and is divided crimping triode BG base stage, another road meets optic coupling element GU by resistance R 6, voltage-stabiliser tube DW, wherein, voltage-stabiliser tube DW is connected across emitter-base bandgap grading and the inter-collector of triode BG, and optic coupling element GU is serially connected in the collector electrode of triode BG.Be connected in series with adjustable potentiometer RW with divider resistance R8.The base stage of triode BG is provided with overload delay capacitor C7.
Compared with the prior art, advantage of the present utility model not only is its simple in structure, reliable operation.And the plug-type structure is equipped with electrical appliance, greatly convenient the use.
Accompanying drawing is the utility model structural representation.
By the following examples, in conjunction with the accompanying drawings the utility model is further described.
Embodiment:
Referring to accompanying drawing, present embodiment is that dropout separator, leakage current detection zero sequence current mutual inductor LH1, overvoltage divider resistance R3, R4, overload and short-circuit detecting current transformer LH2 are set on the power supply end line N, the L that are introduced by plug, insure resistance R F1, RF2, and be connected with earth connection E by piezo-resistance RV1, RV2; Described dropout separator, its button AN exposes the outside at plug casing, and series connection is provided with bidirectional triode thyristor KS, the signal output part of each testing circuit of control termination of controllable silicon KS in the electric power loop of its coil F.
As shown in the figure, in the pulse signal generation circuit that the induced signal output setting of the zero sequence current mutual inductor LH1 that detects in order to leakage current is made of capacitor C 1, C2, C3 and resistance R 1, R2, the control termination capacitor C 3 of controllable silicon KS and the link of capacitor C 1.When leakage current took place, pulse triggering signal made controllable silicon KS conducting, and dropout separator coil F gets electric, and separator is threaded off, and power supply cuts off automatically.Fault presses the button AN after getting rid of, and can recover.
As shown in the figure, the dividing potential drop output signal of overvoltage divider resistance R3, R4 connects the control end of controllable silicon KS by bidirectional trigger diode ST.In the use, overvoltage signal makes bidirectional trigger diode ST conducting, triggers controllable silicon KS then and drops into protection.
Induced signal output at overload and short-circuit detecting current transformer LH2 is provided with rectifier bridge QL, rectification output signal one tunnel is dividing potential drop on resistance R 7, R8, connect triode BG base stage, another road meets optic coupling element GU by resistance R 6, voltage-stabiliser tube DW, wherein, voltage-stabiliser tube DW is connected across emitter-base bandgap grading and the inter-collector of triode BG, and optic coupling element GU is serially connected in the collector electrode of triode BG.In addition, be connected in series with adjustable potentiometer RW, in order to adjust overload voltage protection value with divider resistance R8.In the base stage of triode BG, overload delay capacitor C7 is set, and sets with the overload delay time of GB regulation.When overload took place, the terminal voltage that time-delay is created on the capacitor C 7 made triode BG conducting, has the optocoupler output signal to make controllable silicon KS triggering and conducting then, dropped into protection.When short circuit took place, big current signal made the direct conducting of optocoupler, and output signal makes controllable silicon KS triggering and conducting equally, drops into protection.
In addition, the thunderbolt voltage signal that occurs on the power supply end line is immediately devoted oneself to work piezo-resistance RV1, RV2, and its resistance is reduced to minimum value, power end ground connection.At this moment, insurance resistance R F1, RF2 resistance immediately increase, and drop into protection, and the electrical appliance power supply is cut off.
Claims (6)
1, a kind of electric leakage, overvoltage, overload, short circuit and lightning strike protection attaching plug, it is characterized in that on the power supply end line N, the L that introduce by plug, being provided with dropout separator, leakage current detection zero sequence current mutual inductor LH1, overvoltage divider resistance R3, R4, overload and short-circuit detecting current transformer LH2, insure resistance R F1, RF2, and be connected with earth connection E by piezo-resistance RV1, RV2; Described dropout separator, its button AN exposes the outside at plug casing, and series connection is provided with bidirectional triode thyristor KS, the signal output part of each testing circuit of control termination of controllable silicon KS in the electric power loop of its coil F.
2, electric leakage according to claim 1, overvoltage, overload, short circuit and lightning strike protection attaching plug; it is characterized in that the pulse signal generation circuit that the induced signal output setting at described zero sequence current mutual inductor LH1 is made of capacitor C 1, C2, C3 and resistance R 1, R2, the control termination capacitor C 3 of controllable silicon KS and the link of capacitor C 1.
3, electric leakage according to claim 1, overvoltage, overload, short circuit and lightning strike protection attaching plug is characterized in that the dividing potential drop output signal of described divider resistance R3, R4 connects the control end of controllable silicon KS by bidirectional trigger diode ST.
4, electric leakage according to claim 1, overvoltage, overload, short circuit and lightning strike protection attaching plug; it is characterized in that rectifier bridge QL being set at the induced signal output of described current transformer LH2; rectification output signal one tunnel is dividing potential drop on resistance R 7, R8; connect triode BG base stage; another road meets optic coupling element GU by resistance R 6, voltage-stabiliser tube DW; wherein, voltage-stabiliser tube DW is connected across emitter-base bandgap grading and the inter-collector of triode BG, and optic coupling element GU is serially connected in the collector electrode of triode BG.
5, electric leakage according to claim 4, overvoltage, overload, short circuit and lightning strike protection attaching plug is characterized in that being connected in series with adjustable potentiometer RW with divider resistance R8.
6, electric leakage according to claim 4, overvoltage, overload, short circuit and lightning strike protection attaching plug is characterized in that the base stage at described triode BG, and overload delay capacitor C7 is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00241107 CN2453568Y (en) | 2000-11-21 | 2000-11-21 | Electric power supply plug for preventing it from being leakage, over-voltage, over-load, short circuit and lightninhg-stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00241107 CN2453568Y (en) | 2000-11-21 | 2000-11-21 | Electric power supply plug for preventing it from being leakage, over-voltage, over-load, short circuit and lightninhg-stroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2453568Y true CN2453568Y (en) | 2001-10-10 |
Family
ID=33601638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00241107 Expired - Fee Related CN2453568Y (en) | 2000-11-21 | 2000-11-21 | Electric power supply plug for preventing it from being leakage, over-voltage, over-load, short circuit and lightninhg-stroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2453568Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847802B (en) * | 2009-03-23 | 2012-05-23 | 陈华强 | Electric leakage protection plug |
| CN103199392A (en) * | 2013-04-10 | 2013-07-10 | 卫斌鹏 | Alternating current socket with overvoltage protection |
| CN103296637A (en) * | 2013-05-10 | 2013-09-11 | 李明 | Black-screen preventing circuit for electric energy meter |
| CN103516195A (en) * | 2012-06-29 | 2014-01-15 | 本田技研工业株式会社 | Power conversion device in electric vehicle |
| CN104092204A (en) * | 2014-06-26 | 2014-10-08 | 青岛浩海网络科技股份有限公司 | Overcurrent protection intelligent switch for forest fire prevention and overcurrent protection method thereof |
| CN104410055A (en) * | 2014-12-11 | 2015-03-11 | 乐清市中贸智能科技有限公司 | Protection circuit for power supply line |
| CN104993329A (en) * | 2015-07-22 | 2015-10-21 | 深圳市良辉科技有限公司 | Leakage protection plug with switchable protection modes |
| CN104993330A (en) * | 2015-07-22 | 2015-10-21 | 深圳市良辉科技有限公司 | Leakage protection plug |
| CN105006705A (en) * | 2015-07-22 | 2015-10-28 | 深圳市良辉科技有限公司 | Protected mode-convertible type leakage protection plug |
| CN105024237A (en) * | 2015-08-07 | 2015-11-04 | 深圳市良辉科技有限公司 | Electric leakage protective plug |
-
2000
- 2000-11-21 CN CN 00241107 patent/CN2453568Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847802B (en) * | 2009-03-23 | 2012-05-23 | 陈华强 | Electric leakage protection plug |
| CN103516195A (en) * | 2012-06-29 | 2014-01-15 | 本田技研工业株式会社 | Power conversion device in electric vehicle |
| US9327658B2 (en) | 2012-06-29 | 2016-05-03 | Honda Motor Co., Ltd. | Power conversion device in electric vehicle |
| CN103199392B (en) * | 2013-04-10 | 2015-08-26 | 卫斌鹏 | There is the AC socket of overvoltage protection |
| CN103199392A (en) * | 2013-04-10 | 2013-07-10 | 卫斌鹏 | Alternating current socket with overvoltage protection |
| CN103296637A (en) * | 2013-05-10 | 2013-09-11 | 李明 | Black-screen preventing circuit for electric energy meter |
| CN103296637B (en) * | 2013-05-10 | 2016-04-13 | 国网山东省电力公司菏泽供电公司 | The anti-blank screen circuit of a kind of electric energy meter |
| CN104092204A (en) * | 2014-06-26 | 2014-10-08 | 青岛浩海网络科技股份有限公司 | Overcurrent protection intelligent switch for forest fire prevention and overcurrent protection method thereof |
| CN104410055A (en) * | 2014-12-11 | 2015-03-11 | 乐清市中贸智能科技有限公司 | Protection circuit for power supply line |
| CN104410055B (en) * | 2014-12-11 | 2018-10-23 | 浙江中富电气有限公司 | A kind of supply line's protection circuit |
| CN104993329A (en) * | 2015-07-22 | 2015-10-21 | 深圳市良辉科技有限公司 | Leakage protection plug with switchable protection modes |
| CN104993330A (en) * | 2015-07-22 | 2015-10-21 | 深圳市良辉科技有限公司 | Leakage protection plug |
| CN105006705A (en) * | 2015-07-22 | 2015-10-28 | 深圳市良辉科技有限公司 | Protected mode-convertible type leakage protection plug |
| CN105024237A (en) * | 2015-08-07 | 2015-11-04 | 深圳市良辉科技有限公司 | Electric leakage protective plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |