CN105024344B - Adjustable earth leakage protective device - Google Patents
Adjustable earth leakage protective device Download PDFInfo
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- CN105024344B CN105024344B CN201510477899.0A CN201510477899A CN105024344B CN 105024344 B CN105024344 B CN 105024344B CN 201510477899 A CN201510477899 A CN 201510477899A CN 105024344 B CN105024344 B CN 105024344B
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- module
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- protective device
- earth leakage
- leakage protective
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Abstract
The present invention provides a kind of adjustable earth leakage protective device, including mutual inductor, the mutual inductor are exported to amplification module, and the amplification module is linked in sequence to rectification module, filter module；At two-way, a-road-through is coupled to buckle releaser after crossing adjustment module for the direct current output part of the filter module；After another way passes sequentially through trigger, current source, it is further coupled to the buckle releaser；The trigger triggers the current source and powers for the buckle releaser after receiving pulse signal, no to close the current source.The earth leakage protective device can not only adjust critical current according to actual needs, and have good safety.
Description
Technical field
The present invention relates to distribution facility fields, are a kind of earth leakage protective devices particularly.
Background technology
It is severe due to local environment in earth leakage protective power grid, the local electric leakage of power grid may be caused, cause to leak electricity
Electric current is more than or closes on critical current, at this point, power grid will directly trip, or during electric appliance normal use, grafting is slightly not
Stablize and just trips；In the case, if can not find grid power leakage position in the short time（Especially domestic electric network）, and be badly in need of using
Electricity, then it can be by the critical electric current value of the adjustable earth leakage protective device of adjusting, to improve tripping threshold value；But for current
Adjustable earth leakage protective device, on the one hand the size of current electric grid leakage current is not known, so can not know critical current
Value is adjusted to how many just safety；Importantly, when the leakage current of power grid releases, if weather condition is cleared up by rain, power grid is wet
The local recovery of profit is dried, and user cannot in time turn down the critical current of earth leakage protective device, if at this point, human contact's electric current is super
When crossing safe current value, does not trip since critical current has not yet been reached in earth leakage protective device, then will directly contribute serious electric shock thing
Therefore.Therefore, for this aging circuit, and the domestic power grid that environment is bad, if current earth leakage protective device cannot adjust it is critical
Electric current, thereby increases and it is possible to cause electricity consumption inconvenient, if critical current can be adjusted, electric shock accidents may be led to again.
Invention content
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of adjustable earth leakage protective device, the earth leakage protective device is not
Critical current can be only adjusted according to actual needs, and there is good safety.
Technical solution is used by the present invention realizes technical purpose：The adjustable earth leakage protective device includes mutual inductor, institute
It states mutual inductor to export to amplification module, the amplification module is linked in sequence to rectification module, filter module；The filter module
At two-way, a-road-through is coupled to buckle releaser after crossing adjustment module for direct current output part；Another way passes sequentially through trigger, current source
Afterwards, it is further coupled to the buckle releaser；For the trigger after receiving pulse signal, it is the buckle releaser to trigger the current source
Power supply, it is no to close the current source.
Preferably, being additionally provided with galvanometer between the filter module and adjustment module；The reading of the amperometric current
Corresponding to the amplification factor of the actual current divided by the amplification module that flow through the galvanometer, then divided by the mutual inductor induction
Resulting value after coefficient；To by the galvanometer, be informed under non-accident situation, the current leakage value of power grid.
Preferably, the adjustment module includes a zeroing module, the filter module can be delivered to buckle releaser
Current limit is to zero.
Preferably, between the zero curve for flowing into end of the mutual inductor and the firewire of outflow end, a trial jump mould is overlapped
Block, the trial jump module include trial jump resistance and trial jump switch；The resistance value of the trial jump resistance is equal to network voltage and human body most
The ratio of big safe current.
The beneficial effects of the present invention are：In the use environment of the adjustable earth leakage protective device, if power grid is due to outmoded
Or make moist, there are normal leakages, and can not find leakage point in the short time, and are badly in need of electricity consumption, then can adjust the adjustment
Module returns to zero, that is, ignores normal leakage electric current；At this point, electric leakage continues to increase to critical value, or there is shock current, then leaks
Non-electricity protector still trip operation；And work as changes in environmental conditions, after power grid normal leakage electric current reduces, if forgotten for the moment to leakage
Non-electricity protector adjustment again, then when there is leakage current, the filter module will export an apparent increment, be touched to described
It sends out device and forms a pulse signal, so that it is triggered the current source and power to buckle releaser, equally make earth leakage protective device trip operation；
It can be seen that the adjustable earth leakage protective device can make respectively as the synthesis of earth leakage protective, electrical shock protection and the two
With, so that the flexibility of application is greatly improved, and overall structure is simple, it is cost-effective.
Description of the drawings
Fig. 1 is the structural schematic diagram of this adjustable earth leakage protective device.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples：
In the embodiment shown in fig. 1, which includes mutual inductor 1, the output of the mutual inductor 1 to amplification
Module 2, the amplification module 2 are linked in sequence to rectification module 3, filter module 4；The direct current output part of the filter module 4
At two-way, a-road-through is coupled to buckle releaser 6 after crossing adjustment module 5；After another way passes sequentially through trigger 7, current source 8, then coupling
It is bonded to the buckle releaser 6；The trigger 7 triggers the current source 8 and is supplied for the buckle releaser 6 after receiving pulse signal
Electricity, it is no to close the current source 8；The pulse signal refers to from a lower level and rises to a higher level, practical
On be a finger one current or voltage lifting.
Above-mentioned adjustable earth leakage protective device, is additionally provided with galvanometer A between the filter module 4 and adjustment module 5；It is described
The reading of amperometric current corresponds to the amplification factor of the actual current divided by the amplification module 2 that flow through the galvanometer, then removes
With the resulting value after the induction coefficient of the mutual inductor 1；To by galvanometer A, be informed under non-accident situation, electricity
The current leakage value of net.
Above-mentioned adjustable earth leakage protective device, the adjustment module 5 include a zeroing module, can be by the filter module
4 are delivered to the current limit of buckle releaser 6 to zero.
Above-mentioned adjustable earth leakage protective device, the zero curve for flowing into end of the mutual inductor 1 and the firewire of outflow end it
Between, a trial jump module is overlapped, the trial jump module includes trial jump resistance R1 and trial jump switch K1；The resistance value of the trial jump resistance R1
Equal to the ratio of network voltage and human body maximum safe current.
In the use environment of the above-mentioned adjustable earth leakage protective device, if power grid is due to outmoded or make moist, there are normal leakage,
And can not find leakage point in the short time, and be badly in need of electricity consumption, then it can adjust and the adjustment module 5 returns to zero, that is, will normally let out
Leakage current is ignored；At this point, electric leakage continues to increase to critical value, or there is shock current, then buckle releaser 6 is direct by filter module 4
Power supply makes master switch K0 disconnect, i.e. earth leakage protective device still trip operation；And work as changes in environmental conditions, power grid normal leakage electricity
After stream reduces, if forgotten for the moment to earth leakage protective device again adjustment, when there is leakage current, the filter module 4 will
An apparent increment is exported, a pulse signal is formed to the trigger 7, it is made to trigger the current source 8 to buckle releaser 6
Power supply, equally makes earth leakage protective device trip operation；It can be seen that the adjustable earth leakage protective device can be protected respectively as electric leakage
The synthesis of shield, electrical shock protection and the two uses, and so that the flexibility of application is greatly improved, and overall structure is simple,
It is cost-effective.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of adjustable earth leakage protective device, which includes mutual inductor（1）, the mutual inductor（1）Output
To amplification module（2）, the amplification module（2）It is linked in sequence to rectification module（3）, filter module（4）；It is characterized in that：Institute
State filter module（4）Direct current output part at two-way, a-road-through crosses adjustment module（5）After be coupled to buckle releaser（6）；Another way
Pass sequentially through trigger（7）, current source（8）Afterwards, it is further coupled to the buckle releaser（6）；The trigger（7）Receiving pulse
After signal, the current source is triggered（8）For the buckle releaser（6）Power supply, otherwise closes the current source；The adjustment module
（5）It, can be by the filter module including a zeroing module（4）It is delivered to buckle releaser（6）Current limit to zero.
2. adjustable earth leakage protective device according to claim 1, it is characterised in that：The filter module（4）With adjustment mould
Block（5）Between be additionally provided with galvanometer（A）；The reading of the amperometric current, which corresponds to, flows through the galvanometer（A）Actual current
Divided by the amplification module（2）Amplification factor, then the divided by mutual inductor（1）Induction coefficient after resulting value；To pass through
The galvanometer（A）, it is informed under non-accident situation, the current leakage value of power grid.
3. adjustable earth leakage protective device according to claim 1 or 2, it is characterised in that：The mutual inductor（1）Flow into end
Zero curve and outflow end firewire between, overlap a trial jump module, the trial jump module includes trial jump resistance（R1）And trial jump
Switch（K1）；The trial jump resistance（R1）Resistance value be equal to network voltage and human body maximum safe current ratio.
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 CN105024344A (en) | 2015-11-04 |
| CN105024344B true 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 |
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| Country | Link |
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| CN (1) | CN105024344B (en) |
Families Citing this family (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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| CN204012649U (en) * | 2014-06-18 | 2014-12-10 | 国家电网公司 | The earth leakage protective device of adjustable sensitivity |
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| Publication number | Publication date |
|---|---|
| CN105024344A (en) | 2015-11-04 |
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| TA01 | Transfer of patent application right |
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 |
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