CN107015101A - Leakage testses circuit and leakage current detector - Google Patents
Leakage testses circuit and leakage current detector Download PDFInfo
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- CN107015101A CN107015101A CN201710310897.1A CN201710310897A CN107015101A CN 107015101 A CN107015101 A CN 107015101A CN 201710310897 A CN201710310897 A CN 201710310897A CN 107015101 A CN107015101 A CN 107015101A
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- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 238000001914 filtration Methods 0.000 claims abstract description 42
- 230000000052 comparative effect Effects 0.000 claims abstract description 19
- 230000001131 transforming effect Effects 0.000 claims abstract description 19
- 230000009466 transformation Effects 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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- 235000013399 edible fruits Nutrition 0.000 description 1
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- 230000006870 function Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/06—Measuring real component; Measuring reactive component
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
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- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention provides a kind of leakage testses circuit and leakage current detector, it is related to detection of electrical leakage technical field, wherein, leakage testses circuit includes：Transforming circuit, current rectifying and wave filtering circuit, comparison circuit, output circuit and voltmeter；Transforming circuit is used to carry out transformation to electrical leakage voltage and exported to current rectifying and wave filtering circuit；Current rectifying and wave filtering circuit is used to carry out rectifying and wave-filtering to the electrical leakage voltage after transformation；Comparison circuit is used to the frequency of the electrical leakage voltage after rectifying and wave-filtering being compared with reference voltage frequency, and comparative result is exported to output circuit；Output circuit shows comparative result；Voltmeter is arranged in transforming circuit, current rectifying and wave filtering circuit, comparison circuit or output circuit, solving prior art can not be while provides electric leakage type, and the whether abnormal technical problem of electrical leakage voltage frequency, reached the active electrical leakage voltage frequency of automatic prompting whether abnormal technique effect.
Description
Technical field
The present invention relates to detection of electrical leakage technical field, more particularly, to a kind of leakage testses circuit and leakage current detector.
Background technology
During being overhauled to power transmission sequence or electrical equipment, when occur Leaked Current of Line to Ground when, electric leakage circuit with
Ground formation loop, while there is voltage generation, has electric current to flow through.This voltage can drive electrical equipment to work, with using power supply
Voltage phase difference is very few, and usual this voltage is referred to as active voltage.It can just be measured using voltmeter or universal meter.
But not all voltage measured by voltmeter or universal meter, electrical equipment can be driven to do work, make electricity
Gas equipment works, that is to say, that the voltage measured by voltmeter or universal meter may without carrying load ability, generally by it is this not
The voltage that can be done work is referred to as reactive voltage, and this voltage will not drive loaded work piece, and more people will not be damaged.
But, when leaking electricity, prior art can not provide electric leakage type, and current electrical leakage voltage frequency simultaneously
Whether abnormal, electric leakage type refers to active voltage and reactive voltage, maintenance personal is carried out unnecessary maintenance, or
Can not be reasonably according to the order of importance and emergency arrangement maintenance of accident order, overhaul efficiency is relatively low.
The content of the invention
In view of this, it is an object of the invention to provide a kind of leakage testses circuit, to solve present in prior art
Whether the frequency that electric leak detecting device can not provide electrical leakage voltage simultaneously is abnormal, and electric leakage is active voltage or reactive voltage
Technical problem.
In a first aspect, the embodiments of the invention provide a kind of leakage testses circuit, including：Transforming circuit, rectifying and wave-filtering electricity
Road, comparison circuit, output circuit and voltmeter；
Transforming circuit is used to carry out transformation to electrical leakage voltage and exported to current rectifying and wave filtering circuit；
Current rectifying and wave filtering circuit is used to carry out rectifying and wave-filtering to the electrical leakage voltage after transformation；
Comparison circuit is used to the frequency of the electrical leakage voltage after rectifying and wave-filtering being compared with reference voltage frequency, and will compare
Relatively result is exported to output circuit；
Output circuit shows comparative result；
Voltmeter is arranged in transforming circuit, current rectifying and wave filtering circuit, comparison circuit or output circuit.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the first of first aspect, wherein, also
Including gear selection circuit, electrical leakage voltage is inputted after gear selection circuit to transforming circuit.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of second of first aspect, wherein, gear
The input of position selection circuit is also associated with fuse.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the third of first aspect, wherein, gear
The gear voltage of position selection circuit includes：2V, 127V, 220V, 380V, 660V, 1140V and 1250V.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 4th of first aspect kind, wherein, it is whole
Flowing filter circuit includes bridge rectifier, and the π type filter circuits connected with bridge rectifier, and π type filter circuits
Connect comparison circuit.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 5th of first aspect kind, wherein, it is defeated
Go out circuit exports comparative result by alarm, and alarm is preset with some alarm sounds；
Compared result is sorted out, and the comparative result after classification is corresponding with alarm sound progress.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 6th of first aspect kind, wherein, when
Electrical leakage voltage is active voltage, and when the frequency of the electrical leakage voltage after rectifying and wave-filtering exceeds reference voltage frequency range, alarm
Device exports the first alarm sound；
When the frequency of the electrical leakage voltage after rectifying and wave-filtering is located in the reference voltage frequency range, alarm output the
Two alarm sounds.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 7th of first aspect kind, wherein, when
When electrical leakage voltage is reactive voltage, alarm is in off working state.
With reference in a first aspect, the embodiments of the invention provide the possible embodiment of the 8th of first aspect kind, wherein, ginseng
Electric voltage frequency scope is examined for 45-60Hz.
Second aspect, the embodiment of the present invention also provides a kind of leakage current detector, including first aspect and its possible embodiment party
Leakage testses circuit described in formula.
The embodiment of the present invention brings following beneficial effect：
Leakage testses circuit provided in an embodiment of the present invention carries out transformation to electrical leakage voltage by transforming circuit and exported extremely
Current rectifying and wave filtering circuit；Rectifying and wave-filtering is carried out to the electrical leakage voltage after transformation by current rectifying and wave filtering circuit；Will be whole by comparison circuit
The frequency and reference voltage frequency for flowing filtered electrical leakage voltage are compared, and comparative result is exported to output circuit；Most
Output circuit shows comparative result afterwards.Shown accordingly according to comparative result, both given electric leakage type, but it is right
Whether electrical leakage voltage frequency is shown extremely, facilitates detection of electrical leakage and the maintenance to power transmission network and electrical equipment.
Other features and advantages of the present invention will be illustrated in the following description, also, partly be become from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and obtained in accompanying drawing.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram for the leakage testses circuit that the embodiment of the present invention 1 is provided；
Fig. 2 is a kind of schematic diagram of the preferred embodiment for the leakage testses circuit that the embodiment of the present invention 1 is provided；
Fig. 3 is a kind of circuit diagram of the preferred embodiment for the leakage testses circuit that the embodiment of the present invention 1 is provided；
Fig. 4 is the schematic diagram of another preferred embodiment for the leakage testses circuit that the embodiment of the present invention 1 is provided；
Fig. 5 is the schematic diagram for the leakage current detector that the embodiment of the present invention 2 is provided；
Fig. 6 is the flow chart for the leakage current detector application method that the embodiment of the present invention 2 is provided.
Icon：1- leakage testses circuits；10- gear selection circuits；11- transforming circuits；12- current rectifying and wave filtering circuits；13- ratios
Compared with circuit；14- output circuits；15- reference voltage frequency input circuits；2- display screens.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment is a part of embodiment of the invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
Current leakage testses circuit can not provide electrical leakage quantity simultaneously, and electric leakage is active voltage or reactive voltage,
Based on this, a kind of leakage testses circuit and leakage current detector provided in an embodiment of the present invention can provide electrical leakage quantity and leakage simultaneously
Electric type.
For ease of understanding the present embodiment, a kind of leakage testses circuit disclosed in the embodiment of the present invention is entered first
Row is discussed in detail.
Embodiment 1
As shown in figure 1, a kind of leakage testses circuit, including：Transforming circuit 11, current rectifying and wave filtering circuit 12, comparison circuit 13,
Output circuit 14 and voltmeter V；Transforming circuit 11 is used to carry out transformation to electrical leakage voltage and exported to current rectifying and wave filtering circuit 12；It is whole
Flowing filter circuit 12 is used to carry out rectifying and wave-filtering to the electrical leakage voltage after transformation；Comparison circuit 13 is used for the leakage after rectifying and wave-filtering
The frequency of piezoelectric voltage is compared with reference voltage frequency, and comparative result is exported to output circuit 14；Output circuit 14 shows
Show comparative result；Voltmeter V is arranged in transforming circuit 11, current rectifying and wave filtering circuit 12, comparison circuit 13 or output circuit 14.
The present embodiment carries out transformation to electrical leakage voltage by transforming circuit and exported to current rectifying and wave filtering circuit；Filtered by rectification
Wave circuit carries out rectifying and wave-filtering to the electrical leakage voltage after transformation；By comparison circuit by the frequency of the electrical leakage voltage after rectifying and wave-filtering
It is compared with reference voltage frequency, and comparative result is exported to output circuit；Last output circuit shows comparative result
Out.Shown accordingly according to comparative result, both given electric leakage type, and electrical leakage voltage frequency is shown,
Facilitate detection of electrical leakage and the maintenance to power transmission network and electrical equipment.
As shown in Figures 2 and 3, as the another embodiment of the present embodiment, in addition to gear selection circuit 10, electric leakage
Voltage is inputted after gear selection circuit 10 to transforming circuit 11.Transforming circuit 11 includes primary induction coil L1, iron core and secondary
Level induction coil L2.
Gear selection circuit 10 includes some gear on-offs, and different gear on-offs connect primary according to different magnitudes of voltage
The diverse location of coil.The voltage gear of gear selection circuit 10 in the present embodiment be preferably but not limited to 2V, 127V, 220V,
380V, 660V, 1140V and 1250V, can meet the detection of electrical leakage of common power transmission network and electrical equipment, can when specifically used
To be configured accordingly according to the utilization voltage scope of detection object.
In order to improve the security of detection of electrical leakage, the input of the gear selection circuit 10 of the present embodiment is also associated with insurance
Silk FUSE, i.e. leakage current enter gear selection circuit 10 after fuse FUSE.If transmission line of electricity or electrical equipment are because of short circuit
And there is high current, or because other situations occur electric current exceed fuse rated current when, blowout is other to protect
Circuit.
It should be noted that the voltmeter V of such a embodiment can be arranged at the input of gear selection circuit 10.
Current rectifying and wave filtering circuit 12 in the present embodiment includes bridge rectifier, and the π connected with bridge rectifier
Type filter circuit, and π types filter circuit connection comparison circuit.
First pass through bridge rectifier to electrical leakage voltage carry out full-wave rectification, then by π type filter circuits to rectification after
Electrical leakage voltage be filtered, and the electrical leakage voltage after rectifying and wave-filtering is exported to comparison circuit.
Comparison circuit 13 in the present embodiment uses existing comparable chip, by the frequency of the electrical leakage voltage after filter rectification
It is compared with reference voltage frequency range, the reference voltage frequency range in the present embodiment can be fixed reference voltage frequency
Rate, such a embodiment, comparison circuit 13 is simple in construction, and is directly compared, speed.It should be noted that this
Reference voltage frequency range in embodiment can only have an electric voltage frequency value.
As shown in figure 4, the comparison circuit 13 in the present embodiment is preferably also connected with reference voltage frequency range input circuit, connect
Receive the reference voltage frequency range that is manually entered of user, and send it to comparison circuit 13, comparison circuit 13 is by rectifying and wave-filtering
The frequency of electrical leakage voltage afterwards is compared with the reference voltage frequency range received, such a embodiment, and flexibility is strong, user
Rule of thumb reference voltage frequency range can be changed with detection scene.
As an embodiment of the present embodiment, output circuit 14 shows comparative result, alarm bag by alarm
Include some alarm sounds；Compared result is sorted out, and the comparative result after classification is corresponding with alarm sound progress.Specifically
For：
When electrical leakage voltage is active voltage, and electrical leakage voltage when rectifying and wave-filtering after frequency beyond reference voltage frequency model
When enclosing, alarm exports the first alarm sound；The frequency of electrical leakage voltage after rectifying and wave-filtering is located at reference voltage frequency range
When interior, alarm exports the second alarm sound.
Active voltage can drive electrical equipment to work, therefore, and when electric leakage is active voltage, knot is compared in different classification
Fruit is exported by the alarm sound of different alarms.Meanwhile, voltmeter V displays that electrical leakage voltage value.
Reactive voltage can not drive electrical equipment to work, therefore, and when electric leakage is reactive voltage, alarm is in inoperative
State, but now voltmeter has electrical leakage voltage value.
It should be noted that when in transmission line of electricity without electric leakage, voltmeter no-voltage value, while alarm also alarm
Sound.
In addition, the output circuit of the present embodiment also includes indicator lamp, the state of indicator lamp and the alarm sound pair of alarm
Should, it is specially：
When electric leakage is active voltage, and the frequency of electrical leakage voltage after rectifying and wave-filtering exceeds reference voltage frequency range
When, the alarm sound of alarm is the first alarm sound, and now indicator lamp shows the first color；Electric leakage after rectifying and wave-filtering
When the frequency of voltage is located in reference voltage frequency range, alarm exports the second alarm sound, and now indicator lamp shows second
Plant color.
When electric leakage is reactive voltage, alarm is in off working state, and indicator lamp is also at off working state, voltmeter
Show electrical leakage voltage value.
When transmission line of electricity or electrical equipment are without electric leakage, alarm, indicator lamp are in off working state, while voltmeter
No-voltage value.
The first alarm sound in the present embodiment can be distinguished with the second alarm sound by frequency or broadcasting content,
The present embodiment is preferably distinguished by frequency, is specially：The frequency of first alarm sound is higher than the second alarm sound.
Preferably, the frequency of alarm sound is related to electrical leakage voltage frequency linearity, i.e., can be with by the frequency of alarm sound
Current electrical leakage voltage frequency is directly released, when electrical leakage voltage frequency substantially exceeds reference voltage frequency range, staff can
There is exception to be easy to tell electrical leakage voltage frequency, and take leak current fault effective maintenance rapidly.
Embodiment 2
Present embodiments provide a kind of leakage current detector, including the leakage testses circuit 1 described in embodiment 1.
As shown in figure 5, the leakage current detector in the present embodiment also includes display screen 2, the display for electrical leakage voltage.
The present embodiment preferably also includes reference voltage frequency input circuit 15, for input reference voltage frequency, with reference to electricity
Voltage-frequency rate input circuit 15 can be such that staff is rule of thumb configured with detection scene to reference voltage frequency.
Leakage current detector provided in an embodiment of the present invention, the leakage testses circuit provided with above-described embodiment has identical
Technical characteristic, so can also solve identical technical problem, reaches identical technique effect.
As shown in fig. 6, the present embodiment additionally provides a kind of application method of leakage current detector, comprise the following steps：
S1. suitable voltage gear is selected according to power utilization environment.
Gear voltage in the present embodiment is preferably but not limited to 2V, 127V, 220V, 380V, 660V, 1140V and 1250V.
S2. black line is connected with ground wire, red line is put at detection of electrical leakage.
As shown in figure 3, black line at B is connected with ground wire, A ends red line is put at detection of electrical leakage.Electric leakage in this step
It can be the sense of such as relay at the detection of electrical leakage of transmission line of electricity or at the detection of electrical leakage of electrical equipment at detection
Coil or switch is answered to be possible to electric leakage, therefore this is likely to become at the detection of electrical leakage described in the present embodiment at two.
S3. circuit is connected, and according to the output information of output circuit, judges that electric leakage type, and electrical leakage voltage frequency are
It is no normal.
When alarm sends the first alarm sound, indicator lamp is red, then illustrates that electrical leakage voltage frequency exceeds reference voltage
Frequency range.Now in time corresponding measure should be taken to overhaul leak current fault.
When alarm sends the second alarm sound, indicator lamp is yellow, then illustrates electrical leakage voltage frequency in reference voltage frequency
In the range of rate.
When alarm, indicator lamp are in off working state, and voltmeter has registration, and it is reactive voltage to illustrate electric leakage.
When alarm, indicator lamp are in off working state, and voltmeter then illustrates no electrical leakage voltage also without registration.
In the description of the embodiment of the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " company
Connect " it should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or it is integrally connected；It can be machine
Tool is connected or electrically connected；Can be joined directly together, can also be indirectly connected to by intermediary, can be two members
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
If the function is realized using in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially in other words
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are to cause a computer equipment (can be individual
People's computer, server, or network equipment etc.) perform all or part of step of each of the invention embodiment methods described.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
Finally it should be noted that：Embodiment described above, is only the embodiment of the present invention, to illustrate the present invention
Technical scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those within the art that：Any one skilled in the art
The invention discloses technical scope in, it can still modify to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent substitution is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of technical scheme of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of leakage testses circuit, it is characterised in that including：Transforming circuit, current rectifying and wave filtering circuit, comparison circuit, output electricity
Road and voltmeter；
The transforming circuit is used to carry out transformation to electrical leakage voltage and exported to the current rectifying and wave filtering circuit；
The current rectifying and wave filtering circuit is used to carry out rectifying and wave-filtering to the electrical leakage voltage after transformation；
The comparison circuit is used to the frequency of the electrical leakage voltage after rectifying and wave-filtering being compared with reference voltage frequency, and will compare
Relatively result is exported to the output circuit；
The output circuit shows the comparative result；
The voltmeter is arranged at the transforming circuit, the current rectifying and wave filtering circuit, the comparison circuit or the output circuit
In.
2. leakage testses circuit according to claim 1, it is characterised in that also including gear selection circuit, the electric leakage
Voltage is inputted after the gear selection circuit to the transforming circuit.
3. leakage testses circuit according to claim 2, it is characterised in that the input of the gear selection circuit also connects
It is connected to fuse.
4. leakage testses circuit according to claim 3, it is characterised in that the gear voltage bag of the gear selection circuit
Include：2V, 127V, 220V, 380V, 660V, 1140V and 1250V.
5. leakage testses circuit according to claim 1, it is characterised in that the current rectifying and wave filtering circuit includes bridge rectifier
Circuit, and the π type filter circuits connected with the bridge rectifier, and the π types filter circuit connection comparison is electric
Road.
6. leakage testses circuit according to claim 1, it is characterised in that the output circuit is exported by alarm
The comparative result, the alarm is preset with several alarm sound；
The comparative result is sorted out, and the comparative result after classification is corresponding with alarm sound progress.
7. leakage testses circuit according to claim 6, it is characterised in that when the electrical leakage voltage is active voltage, and
When the frequency of the electrical leakage voltage after the rectifying and wave-filtering exceeds the reference voltage frequency range, the alarm output first
Alarm sound；
When the frequency of the electrical leakage voltage after the rectifying and wave-filtering is located in the reference voltage frequency range, the alarm is defeated
Go out the second alarm sound.
8. leakage testses circuit according to claim 7, it is characterised in that when the electrical leakage voltage is reactive voltage,
The alarm is in off working state.
9. leakage testses circuit according to claim 8, it is characterised in that the reference voltage frequency range is 45-
60Hz。
10. a kind of leakage current detector, it is characterised in that including the leakage testses circuit described in claim any one of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710310897.1A CN107015101A (en) | 2017-05-04 | 2017-05-04 | Leakage testses circuit and leakage current detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710310897.1A CN107015101A (en) | 2017-05-04 | 2017-05-04 | Leakage testses circuit and leakage current detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107015101A true CN107015101A (en) | 2017-08-04 |
Family
ID=59450398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710310897.1A Pending CN107015101A (en) | 2017-05-04 | 2017-05-04 | Leakage testses circuit and leakage current detector |
Country Status (1)
| Country | Link |
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| CN (1) | CN107015101A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113419193A (en) * | 2021-07-30 | 2021-09-21 | 重庆电子工程职业学院 | Electric leakage monitoring system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201584764U (en) * | 2009-12-04 | 2010-09-15 | 无锡华阳科技有限公司 | Pulse DC current leakage protection device |
| CN102360037A (en) * | 2011-06-27 | 2012-02-22 | 深圳市英威腾电源有限公司 | Monitoring device for electric leakage of power supply and protection system for electric leakage of power supply |
| CN202166721U (en) * | 2011-06-17 | 2012-03-14 | 珠海市华晶微电子有限公司 | Function tester for thick film integrated circuit |
| CN207067292U (en) * | 2017-05-04 | 2018-03-02 | 中领世能（天津）科技有限公司 | Leakage testses circuit and leakage current detector |
-
2017
- 2017-05-04 CN CN201710310897.1A patent/CN107015101A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201584764U (en) * | 2009-12-04 | 2010-09-15 | 无锡华阳科技有限公司 | Pulse DC current leakage protection device |
| CN202166721U (en) * | 2011-06-17 | 2012-03-14 | 珠海市华晶微电子有限公司 | Function tester for thick film integrated circuit |
| CN102360037A (en) * | 2011-06-27 | 2012-02-22 | 深圳市英威腾电源有限公司 | Monitoring device for electric leakage of power supply and protection system for electric leakage of power supply |
| CN207067292U (en) * | 2017-05-04 | 2018-03-02 | 中领世能（天津）科技有限公司 | Leakage testses circuit and leakage current detector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113419193A (en) * | 2021-07-30 | 2021-09-21 | 重庆电子工程职业学院 | Electric leakage monitoring system |
| CN113419193B (en) * | 2021-07-30 | 2023-09-26 | 重庆电子工程职业学院 | Leakage monitoring system |
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