CN103490238B - Leakage protecting plug - Google Patents
Leakage protecting plug Download PDFInfo
- Publication number
- CN103490238B CN103490238B CN201310454906.6A CN201310454906A CN103490238B CN 103490238 B CN103490238 B CN 103490238B CN 201310454906 A CN201310454906 A CN 201310454906A CN 103490238 B CN103490238 B CN 103490238B
- Authority
- CN
- China
- Prior art keywords
- magnetic induction
- induction loop
- permutator
- circuit
- ground wire
- 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.)
- Active
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention discloses a kind of leakage protecting plug, including electrical apparatus release, rectification circuit, reduction voltage circuit, first magnetic induction loop, hookup and ghyristor circuit, also include amplifying circuit, second magnetic induction loop and the 3rd magnetic induction loop, the primary coil two ends of the second magnetic induction loop connect zero line and ground wire respectively, secondary coil one end of first magnetic induction loop connects amplifying circuit, the other end is provided with the first permutator, secondary coil one end of second magnetic induction loop connects the first permutator, the second permutator it is provided with between the other end and described amplifying circuit, 3rd magnetic induction loop one end connects described first permutator, the other end connects described second permutator, first permutator and the second permutator are gang switch.Invention increases the function of leakage protecting plug so that it is can by selecting different magnetic induction loops to realize different earth leakage protective modes, it is to avoid individual user family is complicated and cause mistrip because of zero line or ground wire electrification situation.
Description
Technical field
The present invention relates to electric security protector device field, particularly to a kind of leakage protecting plug.
Background technology
The existing plug with earth wire live protector; such as all-purpose leakage protection plug; except detection between load phase, zero line with or without leakage current except; also whether detection ground wire has leakage current to pass through; when separately or concurrently there is leakage current in phase line, zero line or ground wire, two detection coil all can make electrical apparatus release immediately by phase, zero, ground wire all off, namely cut off the electricity supply; thus effectively having ensured personal safety, therefore oneself is widely applied in household electrical appliance.
But, above-mentioned all-purpose leakage protection plug is also defective, because ground wire is to share often; it is often with low-voltage, and the resistance of ground wire only has several ohm, according to Current calculation formula I=U/R; flow to the circuit of ground wire at tens milliamperes to several peaces not etc., therefore easily caused by mistrip.
Disclose a kind of leakage protecting plug detecting ground wire voltage mode before the present inventor, efficiently solve the problems referred to above, but some family there will be charged abnormal conditions because of transformation station zero line, this is also easily caused by mistrip.
Summary of the invention
(1) to solve the technical problem that
Present invention aim to overcome disadvantages mentioned above, it is desirable to provide a kind of leakage protecting plug.
(2) technical scheme
For solving the problems referred to above, the present invention proposes a kind of leakage protecting plug, including electrical apparatus release, rectification circuit, reduction voltage circuit, first magnetic induction loop, hookup and ghyristor circuit, also include amplifying circuit, second magnetic induction loop and the 3rd magnetic induction loop, the primary coil two ends of described second magnetic induction loop connect zero line and ground wire respectively, secondary coil one end of described first magnetic induction loop connects amplifying circuit, the other end is provided with the first permutator, secondary coil one end of described second magnetic induction loop connects the first permutator, the second permutator it is provided with between the other end and described amplifying circuit, described 3rd magnetic induction loop one end connects described first permutator, the other end connects described second permutator, described first permutator and the second permutator are gang switch.
Further, parallel connection of secondary windings first resistance of described first magnetic induction loop.
Further, parallel connection of secondary windings second resistance of described second magnetic induction loop.
Further, parallel connection of secondary windings the 3rd resistance of described 3rd magnetic induction loop.
Further, it is provided with sensing between described zero line and ground wire and eliminates circuit and ground wire electrification instruction.
Further, big resistance current limliting reduction voltage circuit it is provided with between the primary coil of described ground wire and described second magnetic induction loop.
(3) beneficial effect
Compared with prior art; the invention have the advantages that the function that invention increases leakage protecting plug; can by selecting different magnetic induction loops to realize ground line current detection mode or ground wire voltage detection mode, it is to avoid individual user family is complicated and cause mistrip because of zero line or ground wire electrification situation.
Accompanying drawing explanation
Fig. 1 is the module map of the leakage protecting plug of the present invention；
Fig. 2 is the circuit theory diagrams of the leakage protecting plug of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
As depicted in figs. 1 and 2, the leakage protecting plug of the present invention, including electrical apparatus release, rectification circuit DC, reduction voltage circuit is made up of dropping resistor R6, hookup and ghyristor circuit, hookup includes resistance R3 and press button AN, ghyristor circuit includes controllable silicon SCR and electric capacity C2, also include amplifying circuit IC, first magnetic induction loop ZCT1, second magnetic induction loop ZCT2 and the three magnetic induction loop ZCT3, the primary coil two ends of described first magnetic induction loop ZCT1 connect live wire L and the hookup of outfan respectively, the primary coil two ends of described second magnetic induction loop ZCT2 connect zero line N and ground wire E respectively, secondary coil one end of described first magnetic induction loop ZCT1 connects amplifying circuit IC, the other end is provided with the first permutator K1, secondary coil one end of described second magnetic induction loop ZCT2 connects the first permutator K1, the second permutator K2 it is provided with between the other end and described amplifying circuit, described 3rd magnetic induction loop ZCT3 one end connects described first permutator K1, the other end connects described second permutator K2, described first permutator K1 and the second permutator K2 is gang switch.
Parallel connection of secondary windings the first resistance R4 of described first magnetic induction loop ZCT1.
Parallel connection of secondary windings the second resistance R5 of described second magnetic induction loop ZCT2.
Parallel connection of secondary windings the 3rd resistance R7 of described 3rd magnetic induction loop ZCT3.
Resistance R4, resistance R5, resistance R7 play metering function, and the second magnetic induction loop ZCT2 or the 3rd magnetic induction loop ZCT3 produces the sufficiently large amplifying circuit IC that could activate of induced voltage and works, and plays the effect controlling electrical leakage voltage size.
Being provided with sensing between described zero line N and ground wire E and eliminate circuit and ground wire electrification instruction, it is filter capacitor C1 that sensing eliminates circuit, and ground wire electrification is designated as the display lamp H and resistance R1 of series connection.
It is provided with the resistance R2 of big resistance between the primary coil of described ground wire E and described second magnetic induction loop ZCT2 as big resistance current limliting reduction voltage circuit, is used for controlling the size of ground wire trigger voltage.
When the present invention works, electrical apparatus release closes, and voltage is through rectification circuit DC, through dropping resistor R6, powers to amplifying circuit IC, and user can pass through gang switch and select required detection of electrical leakage mode.When the first switch K1 connects the second magnetic induction loop with second switch K2, namely have selected ground wire voltage detection, in the present embodiment between ground wire and zero line voltage more than 50V, the second magnetic induction loop ZCT2 secondary coil just can be made to produce induced voltage, induced voltage makes controllable silicon SCR trigger electrode charged after amplifying circuit IC, so that controllable silicon SCR conducting, make the solenoid on electrical apparatus release be energized, and then trigger electrical apparatus release disconnecting circuit；When the first switch K1 connects three magnetic induction loops with second switch K2, i.e. only selectively line current detection, when in the present embodiment, ground wire electrification is more than 30mA, 3rd magnetic induction loop ZCT3 produces induced voltage, make controllable silicon SCR trigger electrode charged after amplifying circuit IC, so that controllable silicon SCR conducting, make the solenoid on electrical apparatus release be energized, and then trigger electrical apparatus release disconnecting circuit.Invention increases the function of leakage protecting plug so that it is can by selecting different magnetic induction loops to realize different earth leakage protective modes, it is to avoid individual user family is complicated and cause mistrip because of zero line or ground wire electrification situation.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the technology of the present invention principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (6)
1. a leakage protecting plug, including electrical apparatus release, rectification circuit, reduction voltage circuit, first magnetic induction loop, hookup and ghyristor circuit, it is characterized in that: also include amplifying circuit, second magnetic induction loop and the 3rd magnetic induction loop, the primary coil two ends of described second magnetic induction loop connect zero line and ground wire respectively, secondary coil one end of described first magnetic induction loop connects amplifying circuit, the other end is provided with the first permutator, secondary coil one end of described second magnetic induction loop connects the first permutator, the second permutator it is provided with between the other end and described amplifying circuit, described 3rd magnetic induction loop one end connects described first permutator, the other end connects described second permutator, described first permutator and the second permutator are gang switch.
2. leakage protecting plug according to claim 1, it is characterised in that: parallel connection of secondary windings first resistance of described first magnetic induction loop.
3. leakage protecting plug according to claim 2, it is characterised in that: parallel connection of secondary windings second resistance of described second magnetic induction loop.
4. leakage protecting plug according to claim 3, it is characterised in that: parallel connection of secondary windings the 3rd resistance of described 3rd magnetic induction loop.
5. leakage protecting plug according to claim 4, it is characterised in that: it is provided with sensing between described zero line and ground wire and eliminates circuit and ground wire electrification instruction.
6. leakage protecting plug according to claim 5, it is characterised in that: it is provided with big resistance current limliting reduction voltage circuit between the primary coil of described ground wire and described second magnetic induction loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454906.6A CN103490238B (en) | 2013-09-27 | 2013-09-27 | Leakage protecting plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454906.6A CN103490238B (en) | 2013-09-27 | 2013-09-27 | Leakage protecting plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103490238A CN103490238A (en) | 2014-01-01 |
| CN103490238B true CN103490238B (en) | 2016-06-29 |
Family
ID=49830277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310454906.6A Active CN103490238B (en) | 2013-09-27 | 2013-09-27 | Leakage protecting plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103490238B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734114B (en) * | 2015-02-25 | 2017-11-03 | 余姚市嘉荣电子电器有限公司 | The abnormal earth leakage protective device of optocoupler detection ground wire voltage |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101017947A (en) * | 2006-12-23 | 2007-08-15 | 钱加灿 | Full-function secure plug |
| CN202259980U (en) * | 2011-09-23 | 2012-05-30 | 钱加灿 | Plug with ground wire live protection mechanism |
| CN202616744U (en) * | 2012-03-21 | 2012-12-19 | 罗萱宁 | Leakage protector |
| CN103066456A (en) * | 2012-11-27 | 2013-04-24 | 钱加灿 | Protective plug capable of checking leakage of electricity |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003059388A (en) * | 2001-08-17 | 2003-02-28 | Fuji Electric Co Ltd | Electric leakage protection plug |
| WO2009126247A1 (en) * | 2008-04-07 | 2009-10-15 | Technology Research Corporation | Over heating detection and interrupter circuit |
-
2013
- 2013-09-27 CN CN201310454906.6A patent/CN103490238B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101017947A (en) * | 2006-12-23 | 2007-08-15 | 钱加灿 | Full-function secure plug |
| CN202259980U (en) * | 2011-09-23 | 2012-05-30 | 钱加灿 | Plug with ground wire live protection mechanism |
| CN202616744U (en) * | 2012-03-21 | 2012-12-19 | 罗萱宁 | Leakage protector |
| CN103066456A (en) * | 2012-11-27 | 2013-04-24 | 钱加灿 | Protective plug capable of checking leakage of electricity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103490238A (en) | 2014-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103346532B (en) | Electric leakage prevention plug circuit | |
| CN202259980U (en) | Plug with ground wire live protection mechanism | |
| CN104377647B (en) | leakage protection circuit | |
| CN202424123U (en) | Electric leakage protector with high-sensitivity ground wire electrification protection function | |
| CN102891471A (en) | Three-phase circuit breaker having zero offset, zero/fire wire reverse connection and fire wire disconnection protection functions | |
| CN203536652U (en) | Electric leakage protection plug with overtemperature detection | |
| CN202917763U (en) | Electric leakage detection protection plug | |
| CN201138737Y (en) | Multifunctional leakage protecting equipment preventing earth wire to be charged and alarming | |
| CN103187704A (en) | Leakage protection device for preventing electrification of ground wire | |
| CN203491680U (en) | Automatic reset electric leakage overvoltage/undervoltage protection circuit | |
| CN103474955A (en) | Earth leakage protection plug | |
| CN103490238B (en) | Leakage protecting plug | |
| CN103887660A (en) | Earth leakage protection plug capable of being switched between three-pole mode and two-pole mode | |
| CN204205560U (en) | leakage protection circuit | |
| CN204131087U (en) | Earth leakage protective device | |
| CN203536934U (en) | Electric leakage protection plug | |
| CN203326559U (en) | Electric leakage protection plug circuit | |
| CN204205559U (en) | A kind of leakage protection circuit | |
| CN204205558U (en) | With the leakage protecting plug that ground wire high voltage detects | |
| CN103066456A (en) | Protective plug capable of checking leakage of electricity | |
| CN103178492A (en) | Leakage protector with electrified earth line protection function | |
| CN103490237B (en) | Leakage protecting plug with overtemperature detection | |
| CN203536653U (en) | Leakage protection plug | |
| CN201813031U (en) | Protection type plug board | |
| CN206894222U (en) | A kind of ground wire and leakage protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |