CN103187704A - Leakage protection device for preventing electrification of ground wire - Google Patents
Leakage protection device for preventing electrification of ground wire Download PDFInfo
- Publication number
- CN103187704A CN103187704A CN2013101040660A CN201310104066A CN103187704A CN 103187704 A CN103187704 A CN 103187704A CN 2013101040660 A CN2013101040660 A CN 2013101040660A CN 201310104066 A CN201310104066 A CN 201310104066A CN 103187704 A CN103187704 A CN 103187704A
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- China
- Prior art keywords
- ground wire
- protective device
- earth leakage
- leakage protective
- zero
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- 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.)
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Abstract
A leakage protection device for preventing the electrification of a ground wire comprises three electrodes of a phase wire L with a switch, a zero wire N with a switch and a ground wire E with a switch as well as a zero-sequence current transformer, a test circuit, a releaser, a rectification circuit, a power dropping circuit, an amplifier and controllable silicon penetrating through the phase wire L and the zero wire N, and the leakage protection device is characterized by also being provided with a ground wire current transformer, another amplifier and another controller silicon, the ground wire current transformer penetrates through the ground wire E, a secondary coil of the ground wire current transformer is connected with the input end of the other amplifier, and the output end of the other amplifier is connected with a trigger electrode of the other controllable silicon. Since the ground wire is provided with the ground wire current transformer, tripping operation can be enabled to carry out when current flows by the ground wire, the ground wire is enabled to not electrically leak, and the electrical safety can be guaranteed.
Description
Technical field
The present invention relates to the protective device that a kind of ground wire electrification is pressed.
Background technology
The device of existing band earth wire charged protecting; as all-purpose leakage protection plug; generally refer to and to disconnect when electric leakage appears in the phase zero line at protective device (plug); can disconnect when being also included within ground wire electrification; it generally comprises the phase that is connected with fixed contact by the movable contact flexure strip; zero; ground three utmost points; pass phase; zero sequence current mutual inductor between the zero line; the test loop; rectifier; controllable silicon; release; pass the zero sequence current mutual inductor of ground wire; it is except detecting the load phase; have or not outside the leakage current between the zero line; whether also detect ground wire has leakage current to pass through; work as phase line; when zero line or ground wire leakage current occurs respectively or simultaneously; two magnetic test coils all can make release immediately with phase; zero; ground wire all disconnects; namely cut off the electricity supply; thereby ensured personal safety effectively, therefore in household electrical appliance, obtained extensive use.
But, owing to the difference of power utilization environment, the difference of working condition are had higher requirement to this series products, therefore need develop the product that structure is simple more, can adapt to power utilization environment better.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of earth leakage protective device that prevents ground wire electrification at the above-mentioned condition of prior art, can enough adapt to power utilization environment.
The present invention solves the problems of the technologies described above the technical scheme that adopts:
A kind of earth leakage protective device that prevents ground wire electrification; phase line L, the zero line N, ground wire E three utmost points that comprise each belt switch; pass zero sequence current mutual inductor, hookup, release, rectification circuit, power supply step-down, amplifier, the controllable silicon of phase line L, zero line N; it is characterized in that: a ground line current instrument transformer, another amplifier and another controllable silicon also are set; the ground line current instrument transformer passes ground wire E; the secondary coil of ground line current instrument transformer is connected with another amplifier input terminal, and the output of another amplifier is connected with another silicon controlled trigger electrode.
Compared with prior art, the invention has the advantages that:
Because the ground line current instrument transformer is set in ground wire, therefore can guarantee to trip when the ground wire electric leakage has electric current to flow through, guarantee the ground wire leakproof, guarantee Electrical Safety.
Description of drawings
Fig. 1 is the circuit theory schematic diagram of the embodiment of the invention.
Embodiment
Describe in further detail below in conjunction with the present invention of accompanying drawing embodiment.
As shown in Figure 1; a kind of earth leakage protective device that prevents ground wire electrification; phase line L, the zero line N, ground wire E three utmost points that comprise belt switch K; zero sequence current mutual inductor ZCT1, hookup R2, AN, release L1, rectification circuit D1, power supply reduction voltage circuit R1, amplifier IC1 and the controllable silicon SCR 1 of passing phase line L, zero line N are original earth leakage protective device circuit, increase ground line current instrument transformer ZCT2, an amplifier IC2 and controllable silicon SCR 2 in original leakage protection circuit.
Ground line current instrument transformer ZCT2 passes ground wire, and the secondary coil of ground line current instrument transformer ZCT2 is connected with the input of another amplifier IC2, and the output of amplifier IC2 is connected with the trigger electrode of controllable silicon SCR 2.
When ground wire E had electric current to flow through, the secondary coil of ground line current instrument transformer ZCT2 can induce electric current and amplify back to controllable silicon SCR 2 trigger electrodes through amplifier IC2 and trigger the controllable silicon conducting and make the release tripping operation of threading off, thereby earth leakage protective device is cut off the power supply.
Between above-mentioned controllable silicon SCR 2 trigger electrodes and the zero line N1 capacitor C 3 is set, can prevents extraneous electrical interference signal false triggering controllable silicon SCR 2.
Between above-mentioned controllable silicon SCR 1 trigger electrode and the zero line N1 capacitor C 2 is set, can prevents extraneous electrical interference signal false triggering controllable silicon SCR 1.
One of the parallel connection of secondary windings of above-mentioned ground line current instrument transformer ZCT2 is regulated resistance R 4, regulates resistance R 4 tripping current of line E convertibly.
Capacitor C 4 of the parallel connection of secondary windings of above-mentioned ground line current instrument transformer ZCT2 can prevent from disturbing the signal of telecommunication to enter amplifier IC2.
One of the parallel connection of secondary windings of above-mentioned zero sequence current mutual inductor ZCT1 is regulated resistance R 3, regulates the leakage tripping electric current that resistance R 3 can change zero line N or live wire N.
Capacitor C 1 of the parallel connection of secondary windings of above-mentioned zero sequence current mutual inductor ZCT1 can prevent from disturbing the signal of telecommunication to enter amplifier IC1.
Between above-mentioned reduction voltage circuit R1 one end and the zero line N1 capacitor C 5 is set, can guarantees the stable of amplifier IC1 and amplifier IC2 power supply better.
Claims (8)
1. earth leakage protective device that prevents ground wire electrification; the phase line L that comprises each belt switch; zero line N; ground wire E three utmost points; pass phase line L; the zero sequence current mutual inductor of zero line N; hookup; release; rectification circuit; the power supply step-down; amplifier; controllable silicon; it is characterized in that: a ground line current instrument transformer also is set; another amplifier and another controllable silicon; the ground line current instrument transformer passes ground wire E; the secondary coil of ground line current instrument transformer is connected with another amplifier input terminal, and the output of another amplifier is connected with another silicon controlled trigger electrode.
2. a kind of earth leakage protective device that prevents ground wire electrification as claimed in claim 1 is characterized in that: between described another controllable silicon trigger electrode and the zero line electric capacity is set.
3. a kind of earth leakage protective device that prevents ground wire electrification as claimed in claim 1 is characterized in that: between a described controllable silicon trigger electrode and the zero line electric capacity is set.
4. a kind of earth leakage protective device that prevents ground wire electrification as claimed in claim 1 is characterized in that: an adjusting of the parallel connection of secondary windings of described ground line current instrument transformer resistance.
5. a kind of earth leakage protective device that prevents ground wire electrification as claimed in claim 1 is characterized in that: electric capacity of the parallel connection of secondary windings of described ground line current instrument transformer.
6. a kind of earth leakage protective device that prevents ground wire electrification as claimed in claim 1 is characterized in that: an adjusting of the parallel connection of secondary windings of described zero sequence current mutual inductor resistance.
7. a kind of earth leakage protective device that prevents ground wire electrification as claimed in claim 1 is characterized in that: electric capacity of the parallel connection of secondary windings of described zero sequence current mutual inductor.
8. a kind of earth leakage protective device that prevents ground wire electrification as claimed in claim 1 is characterized in that: between described reduction voltage circuit one end and the zero line electric capacity is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101040660A CN103187704A (en) | 2013-03-28 | 2013-03-28 | Leakage protection device for preventing electrification of ground wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101040660A CN103187704A (en) | 2013-03-28 | 2013-03-28 | Leakage protection device for preventing electrification of ground wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103187704A true CN103187704A (en) | 2013-07-03 |
Family
ID=48678744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101040660A Pending CN103187704A (en) | 2013-03-28 | 2013-03-28 | Leakage protection device for preventing electrification of ground wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103187704A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993335A (en) * | 2015-07-22 | 2015-10-21 | 深圳市良辉科技有限公司 | Leakage protection plug |
| CN105024239A (en) * | 2015-08-07 | 2015-11-04 | 深圳市良辉科技有限公司 | Electric leakage protection plug |
| CN105914706A (en) * | 2016-06-27 | 2016-08-31 | 毛春梅 | Electric-shock-preventing power supply transformer |
| CN106451329A (en) * | 2016-07-19 | 2017-02-22 | 中山市开普电器有限公司 | Leakage protection apparatus |
| CN114389233A (en) * | 2020-10-16 | 2022-04-22 | Abb瑞士股份有限公司 | Current interrupter device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01307133A (en) * | 1988-06-02 | 1989-12-12 | Mitsubishi Electric Corp | Earth leakage breaker with protection against neutral wire open-phase for single-phase three wires |
| CN101017947A (en) * | 2006-12-23 | 2007-08-15 | 钱加灿 | Full-function secure plug |
| CN101431203A (en) * | 2008-08-14 | 2009-05-13 | 钱加灿 | Omnipotence safety plug |
| CN202259980U (en) * | 2011-09-23 | 2012-05-30 | 钱加灿 | Plug with ground wire live protection mechanism |
| CN202424123U (en) * | 2012-01-13 | 2012-09-05 | 钱加灿 | Electric leakage protector with high-sensitivity ground wire electrification protection function |
| CN203193248U (en) * | 2013-03-28 | 2013-09-11 | 余姚市嘉荣电子电器有限公司 | Earth leakage protection device for preventing ground wire electrification |
-
2013
- 2013-03-28 CN CN2013101040660A patent/CN103187704A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01307133A (en) * | 1988-06-02 | 1989-12-12 | Mitsubishi Electric Corp | Earth leakage breaker with protection against neutral wire open-phase for single-phase three wires |
| CN101017947A (en) * | 2006-12-23 | 2007-08-15 | 钱加灿 | Full-function secure plug |
| CN101431203A (en) * | 2008-08-14 | 2009-05-13 | 钱加灿 | Omnipotence safety plug |
| CN202259980U (en) * | 2011-09-23 | 2012-05-30 | 钱加灿 | Plug with ground wire live protection mechanism |
| CN202424123U (en) * | 2012-01-13 | 2012-09-05 | 钱加灿 | Electric leakage protector with high-sensitivity ground wire electrification protection function |
| CN203193248U (en) * | 2013-03-28 | 2013-09-11 | 余姚市嘉荣电子电器有限公司 | Earth leakage protection device for preventing ground wire electrification |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993335A (en) * | 2015-07-22 | 2015-10-21 | 深圳市良辉科技有限公司 | Leakage protection plug |
| CN105024239A (en) * | 2015-08-07 | 2015-11-04 | 深圳市良辉科技有限公司 | Electric leakage protection plug |
| CN105914706A (en) * | 2016-06-27 | 2016-08-31 | 毛春梅 | Electric-shock-preventing power supply transformer |
| CN106451329A (en) * | 2016-07-19 | 2017-02-22 | 中山市开普电器有限公司 | Leakage protection apparatus |
| CN106451329B (en) * | 2016-07-19 | 2019-04-05 | 中山市开普电器有限公司 | A kind of earth leakage protective device |
| CN114389233A (en) * | 2020-10-16 | 2022-04-22 | Abb瑞士股份有限公司 | Current interrupter device |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130703 |