CN105024344A - Adjustable leakage protector - Google Patents
Adjustable leakage protector Download PDFInfo
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- CN105024344A CN105024344A CN201510477899.0A CN201510477899A CN105024344A CN 105024344 A CN105024344 A CN 105024344A CN 201510477899 A CN201510477899 A CN 201510477899A CN 105024344 A CN105024344 A CN 105024344A
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- module
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- protective device
- earth leakage
- trial jump
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- 230000001012 protector Effects 0.000 title abstract 4
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 230000003321 amplification Effects 0.000 claims abstract description 11
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims description 34
- 230000006698 induction Effects 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The invention provides an adjustable leakage protector. The adjustable leakage protector comprises a mutual inductor, wherein the mutual inductor outputs to an amplification module, and the amplification module is sequentially connected to a rectification module and a filtering module; a direct current output part of the filter module is divided into two paths, one path is coupled to a tripper through a timing module, and the other path sequentially passes through a trigger and a current source and then is coupled to the tripper; and the trigger is used for triggering the current source to supply power to the tripper after receiving a pulse signal, or closing the current source. By the leakage protector, critical current can be adjusted according to actual demand, and favorable safety is achieved.
Description
Technical field
The present invention relates to distribution facility field, especially, is a kind of earth leakage protective device.
Background technology
In earth leakage protective electrical network, severe due to local environment, may cause the local electric leakage of electrical network, cause leakage current to exceed or close on critical current, now, electrical network will directly trip, or in the normal use procedure of electrical equipment, the slightly unstable just tripping operation of grafting; In the case, if can not find grid power leakage position (especially domestic electric network) in the short time, be badly in need of electricity consumption again, then by regulating the critical electric current value of adjustable earth leakage protective device, tripping threshold value can be improved; But for current adjustable earth leakage protective device, do not know on the one hand the size of current electric grid leakage current, so cannot know critical electric current value is adjusted to how many just safety; The more important thing is; when the leakage current of electrical network is removed; as weather condition is cleared up by rain; local recovery's drying that electrical network is moistening; the critical current of earth leakage protective device can not be turned down by user in time, now, if when human contact's electric current exceedes safety electric flow valuve; do not trip because earth leakage protective device not yet reaches critical current, then will directly cause serious electric shock accidents.Therefore, for this aging circuit, and the domestic power grid that environment is not good, if current earth leakage protective device can not regulate critical current, and electricity consumption inconvenience may be caused, if can critical current be regulated, then may lead to electric shock accidents again.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of adjustable earth leakage protective device, this earth leakage protective device not only can regulate critical current according to actual needs, and has good fail safe.
The technical scheme that actualizing technology object of the present invention adopts is: this adjustable earth leakage protective device comprises instrument transformer, and described instrument transformer exports amplification module to, and described amplification module is linked in sequence to rectification module, filtration module; The direct current efferent of described filtration module is divided into two-way, leads up to after adjustment module and is coupled to release; Another road successively by after trigger, current source, then is coupled to described release; Described trigger is after receiving pulse signal, and triggering described current source is that described release is powered, the described current source of no closedown.
As preferably, between described filtration module and adjustment module, be also provided with galvanometer; The reading of described amperometric current corresponding to flowing through the multiplication factor of this galvanometric actual current divided by described amplification module, then divided by the income value after the induction coefficient of described instrument transformer; Thus by this galvanometer, under non-accident situation can be informed in, the current leakage value of electrical network.
As preferably, described adjustment module comprises a zeroing module, described filtration module can be delivered to the current limit of release to zero point.
As preferably, the zero line flowing to end of described instrument transformer, and between the live wire of outflow end, an overlap joint trial jump module, described trial jump module comprises trial jump resistance and trial jump switch; The resistance of described trial jump resistance equals the ratio of line voltage and human body maximum safe current.
Beneficial effect of the present invention is: in the environment for use of this adjustable earth leakage protective device, if electrical network is due to outmoded or make moist, there is normal leakage, and in the short time, can not find leakage point, be badly in need of again electricity consumption, then can adjust described adjustment module zeroing, that is, normal leakage electric current is ignored; Now, electric leakage continues to increase to critical value, or occurs shock current, then earth leakage protective device still trip operation; And work as changes in environmental conditions, after electrical network normal leakage electric current reduces, if forget earth leakage protective device again adjustment for the moment, then when there is leakage current, described filtration module is by output obvious increment, a pulse signal is formed to described trigger, makes it trigger described current source and release is powered, make earth leakage protective device trip operation equally; As can be seen here, this adjustable earth leakage protective device can respectively as earth leakage protective, electrical shock protection, and both synthesis uses, and the flexibility of application is greatly improved, and general structure is simple, and cost performance is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of this adjustable earth leakage protective device.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described:
In the embodiment shown in fig. 1, this adjustable earth leakage protective device comprises instrument transformer 1, and described instrument transformer 1 exports amplification module 2 to, and described amplification module 2 is linked in sequence to rectification module 3, filtration module 4; The direct current efferent of described filtration module 4 is divided into two-way, leads up to after adjustment module 5 and is coupled to release 6; Another road successively by after trigger 7, current source 8, then is coupled to described release 6; Described trigger 7, after receiving pulse signal, triggers described current source 8 and powers for described release 6, the described current source 8 of no closedown; Described pulse signal, refers to rise to a higher level from a lower level, is actually finger curtage lifting.
Above-mentioned adjustable earth leakage protective device, is also provided with galvanometer A between described filtration module 4 and adjustment module 5; The reading of described amperometric current corresponding to flowing through the multiplication factor of this galvanometric actual current divided by described amplification module 2, then divided by the income value after the induction coefficient of described instrument transformer 1; Thus by this galvanometer A, under non-accident situation can be informed in, the current leakage value of electrical network.
Above-mentioned adjustable earth leakage protective device, described adjustment module 5 comprises a zeroing module, described filtration module 4 can be delivered to the current limit of release 6 to zero point.
Above-mentioned adjustable earth leakage protective device, the zero line flowing to end of described instrument transformer 1, and between the live wire of outflow end, an overlap joint trial jump module, described trial jump module comprises trial jump resistance R1 and trial jump K switch 1; The resistance of described trial jump resistance R1 equals the ratio of line voltage and human body maximum safe current.
In the environment for use of this adjustable earth leakage protective device above-mentioned, if electrical network is due to outmoded or make moist, there is normal leakage, and in the short time, can not find leakage point, be badly in need of again electricity consumption, then can adjust and described adjustment module 5 is returned to zero, that is, normal leakage electric current be ignored; Now, electric leakage continues to increase to critical value, or occurs shock current, then release 6 is directly powered by filtration module 4, master switch K0 is disconnected, i.e. earth leakage protective device still trip operation; And work as changes in environmental conditions, after electrical network normal leakage electric current reduces, if forget earth leakage protective device again adjustment for the moment, then when there is leakage current, described filtration module 4 is by output obvious increment, a pulse signal is formed to described trigger 7, makes it trigger described current source 8 pairs of releases 6 and power, make earth leakage protective device trip operation equally; As can be seen here, this adjustable earth leakage protective device can respectively as earth leakage protective, electrical shock protection, and both synthesis uses, and the flexibility of application is greatly improved, and general structure is simple, and cost performance is high.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. an adjustable earth leakage protective device, this adjustable earth leakage protective device comprises instrument transformer (1), and described instrument transformer (1) exports amplification module (2) to, and described amplification module (2) is linked in sequence to rectification module (3), filtration module (4); It is characterized in that: the direct current efferent of described filtration module (4) is divided into two-way, lead up to after adjustment module (5) and be coupled to release (6); Another road successively by after trigger (7), current source (8), then is coupled to described release (6); Described trigger (7), after receiving pulse signal, triggers described current source (8) for described release (6) power supply, the described current source of no cut out.
2. adjustable earth leakage protective device according to claim 1, is characterized in that: be also provided with galvanometer (A) between described filtration module (4) and adjustment module (5); The reading of described amperometric current corresponding to the multiplication factor of actual current divided by described amplification module (2) flowing through this galvanometer (A), then divided by the income value after the induction coefficient of described instrument transformer (1); To pass through this galvanometer (A), under being informed in non-accident situation, the current leakage value of electrical network.
3. adjustable earth leakage protective device according to claim 1 and 2, is characterized in that: described adjustment module (5) comprises a zeroing module, described filtration module (4) can be delivered to the current limit of release (6) to zero point.
4. adjustable earth leakage protective device according to claim 1 and 2, it is characterized in that: the zero line flowing to end of described instrument transformer (1), and between the live wire of outflow end, an overlap joint trial jump module, described trial jump module comprises trial jump resistance (R1) and trial jump switch (K1); The resistance of described trial jump resistance (R1) equals the ratio of line voltage and human body maximum safe current.
5. adjustable earth leakage protective device according to claim 3, it is characterized in that: the zero line flowing to end of described instrument transformer (1), and between the live wire of outflow end, an overlap joint trial jump module, described trial jump module comprises trial jump resistance (R1) and trial jump switch (K1); The resistance of described trial jump resistance (R1) equals the ratio of line voltage and human body maximum safe current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510477899.0A CN105024344B (en) | 2015-08-07 | 2015-08-07 | Adjustable earth leakage protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510477899.0A CN105024344B (en) | 2015-08-07 | 2015-08-07 | Adjustable earth leakage protective device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105024344A true CN105024344A (en) | 2015-11-04 |
| CN105024344B CN105024344B (en) | 2018-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510477899.0A Active CN105024344B (en) | 2015-08-07 | 2015-08-07 | Adjustable earth leakage protective device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105024344B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277763A (en) * | 2019-07-08 | 2019-09-24 | 上海磊跃自动化设备有限公司 | A kind of earth leakage protective device with low current trial jump function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS505836A (en) * | 1973-05-19 | 1975-01-22 | ||
| JP2001006515A (en) * | 1999-06-16 | 2001-01-12 | Kawamura Electric Inc | Earth leakage breaker |
| CN201327992Y (en) * | 2007-12-19 | 2009-10-14 | 刘雪娟 | Residual current operated circuit breaker with high sensitivity |
| CN201877794U (en) * | 2010-11-23 | 2011-06-22 | 东莞基业电气设备有限公司 | Intelligent controller of residual current circuit breaker |
| CN201877813U (en) * | 2010-11-23 | 2011-06-22 | 东莞基业电气设备有限公司 | Adjustable intelligent control device for leakage circuit breakers |
| CN204012649U (en) * | 2014-06-18 | 2014-12-10 | 国家电网公司 | The earth leakage protective device of adjustable sensitivity |
-
2015
- 2015-08-07 CN CN201510477899.0A patent/CN105024344B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS505836A (en) * | 1973-05-19 | 1975-01-22 | ||
| JP2001006515A (en) * | 1999-06-16 | 2001-01-12 | Kawamura Electric Inc | Earth leakage breaker |
| CN201327992Y (en) * | 2007-12-19 | 2009-10-14 | 刘雪娟 | Residual current operated circuit breaker with high sensitivity |
| CN201877794U (en) * | 2010-11-23 | 2011-06-22 | 东莞基业电气设备有限公司 | Intelligent controller of residual current circuit breaker |
| CN201877813U (en) * | 2010-11-23 | 2011-06-22 | 东莞基业电气设备有限公司 | Adjustable intelligent control device for leakage circuit breakers |
| CN204012649U (en) * | 2014-06-18 | 2014-12-10 | 国家电网公司 | The earth leakage protective device of adjustable sensitivity |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277763A (en) * | 2019-07-08 | 2019-09-24 | 上海磊跃自动化设备有限公司 | A kind of earth leakage protective device with low current trial jump function |
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| CN105024344B (en) | 2018-08-24 |
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Effective date of registration: 20180720 Address after: 325000 room 1401, 29 Avenue South Garden, Ouhai Avenue, Wenzhou, Zhejiang. Applicant after: Zheng Xinyi Address before: 215000 room 2107, Wuzhong shopping center, 388 east Wu South Road, Wuzhong District, Suzhou, Jiangsu. Applicant before: Ma Renhuan |
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Effective date of registration: 20201123 Address after: Gangzha District Jiangsu city of Nantong province Wen Jun Lu 226000 No. 15 Building 5 Patentee after: JIANGSU GUOQUAN AUTOMATION TECHNOLOGY Co.,Ltd. Address before: 325000 room 1401, 29 Avenue South Garden, Ouhai Avenue, Wenzhou, Zhejiang. Patentee before: Zheng Xinyi |