CN203561676U - Leakage current tester - Google Patents
Leakage current tester Download PDFInfo
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- CN203561676U CN203561676U CN201320756828.0U CN201320756828U CN203561676U CN 203561676 U CN203561676 U CN 203561676U CN 201320756828 U CN201320756828 U CN 201320756828U CN 203561676 U CN203561676 U CN 203561676U
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- resistance
- switch
- electric capacity
- leakage current
- branch road
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Abstract
The utility model relates to a leakage current tester, and the technical problem that a traditional leakage current tester is complex in structure, inconvenient to use and high in cost is solved. The leakage current tester comprises on-off switches, gear switches and eight branch circuits. The leakage current tester can be widely used for leakage current detection of electrical products.
Description
Technical field
The utility model relates to a kind of pick-up unit, particularly relates to a kind of leakage current tester.
Background technology
As everyone knows, leakage current is one of important indicator of weighing electrical apparatus insulation quality, leakage current tester for measure that the working power (or other power supplys) of electrical equipment produces by insulation or distribution parameter impedance with the irrelevant leakage current of work.Existing leakage current tester complex structure, is used inconvenience, and cost is high.
Summary of the invention
The utility model is exactly in order to solve existing leakage current tester complex structure, to use the technical matters inconvenient, cost is high, and a kind of simple in structure, easy to use, leakage current tester that cost is low is provided.
The leakage current tester that the utility model provides, comprises power on/off switch and eight subcircuits; Article one, branch road comprises 30mA/60mA gear switch switch, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance and the 6th resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance are cascaded, and the first resistance is connected in parallel on the second resistance two ends; Second branch road comprises 30mA/60mA gear switch switch, the 7th resistance, the 8th resistance, the 9th resistance and the tenth resistance, the 7th resistance and the 9th resistance are cascaded, after the 8th resistance and the tenth resistance are cascaded, be connected in parallel on the 7th resistance and the 9th resistance two ends, the node between the 4th resistance and the 5th resistance is connected with the 9th resistance; Article three, branch road comprises the first electric capacity and the 150mA gear switch switch being cascaded, article four, branch road comprises the second electric capacity and the second switch being cascaded, article five, branch road comprises the 3rd electric capacity and the 3rd switch being cascaded, article six, branch road comprises the 4th electric capacity and the 4th switch being cascaded, article seven, branch road comprises the 5th electric capacity and the 5th switch being cascaded, and the 8th branch road comprises the 6th electric capacity and the 6th switch being cascaded.
Preferably, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the specification of the tenth resistance is respectively 50w/2K Ω, 50w/2K Ω, 10w/200 Ω, 10w/200 Ω, 10w/200 Ω, 10w/200 Ω, 10w/3K Ω, 10w/3K Ω, 10w/3K Ω, 10w/3K Ω, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the specification of the 6th electric capacity is respectively 2.2 μ F, 0.68 μ F, 0.68 μ F, 0.68 μ F, 0.68 μ F, 0.68 μ F.
The beneficial effects of the utility model are, simple in structure, integrated level is high, volume is little, cost is low, easy to operate, and without external power supply, without the adjustable electric element such as slide rheostat perhaps, testing efficiency is high, is adapted at using in streamline batch production.
The further feature of the utility model, by the description of following embodiment, is clearly recorded.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Reference numeral explanation:
1.5V direct supply, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 are respectively the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, and C1, C2, C3, C4, C5, C6 are respectively the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity.
Embodiment
As shown in Figure 1, the utility model is mainly comprised of resistance, electric capacity, switch, comprises four gears, is respectively 30mA, 60mA, 150mA, 300mA.
Circuit structure of the present utility model comprises 8 branch roads, and every branch road is to be all connected with extraneous 5V direct supply 1 by on/off switch, and on/off switch plays on/off electro ultrafiltration.
Article one, prop up route 30mA/60mA gear switch switch S 30/60 and control break-make, comprise that the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the first resistance R 1 that are cascaded are connected in parallel on the second resistance R 2 two ends.
Second props up route 30mA/60mA gear switch switch S 30/60 and controls break-make, comprise following circuit, after the 8th resistance R 8, the tenth resistance R 10 series connection, be connected in parallel on the 7th resistance R 7 and the 9th resistance R 9 two ends of series connection, then connect with the 5th resistance R 5, the 6th resistance R 6.
Article three, branch road comprises the first capacitor C 1 and the 150mA gear switch switch S 150 of series connection, article four, branch road comprises the second capacitor C 2 and the second switch S2 of series connection, article five, branch road comprises the 3rd capacitor C 3 and the 3rd switch S 3 of series connection, article six, branch road comprises the 4th capacitor C 4 and the 4th switch S 4 of series connection, article seven, branch road comprises the 5th capacitor C 5 of series connection and the 6th capacitor C 6 and the 6th switch S 6 that 5, the eight branch roads of the 5th switch S comprise series connection.
In circuit, the specification size of each resistance, electric capacity can be following numerical value:
The first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10 are respectively 50w/2K Ω, 50w/2K Ω, 10w/200 Ω, 10w/200 Ω, 10w/200 Ω, 10w/200 Ω, 10w/3K Ω, 10w/3K Ω, 10w/3K Ω, 10w/3K Ω.
The first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6 are respectively 2.2 μ F, 0.68 μ F, 0.68 μ F, 0.68 μ F, 0.68 μ F, 0.68 μ F.
During use, connect product to be measured, 5V direct supply 1 is sealed in reometer for measuring current electric current.OUT output terminal is AC, is directly connected to inverter.Its signal end connects oscillograph.
While using 30mA shelves test 30mA mutation current, first on/off switch is got to off state, by 30mA/60mA gear switch switch S 30/60, connect second branch road again, other switch is in off-state, then give inverter power supply, finally on/off switch is got to on state, with oscillograph capture from on/off switch get on state this time be carved into the time period size in the moment of inverter no-output, and this time value and standard value are contrasted.
While using 60mA shelves test 60mA mutation current, first on/off switch is got to off state, by 30mA/60mA gear switch switch S 30/60, connect article one branch road again, other switch is in off-state, then give inverter power supply, finally on/off switch is got to on state, with oscillograph capture from on/off switch get on state this time be carved into the time period size in the moment of inverter no-output, and this time value and standard value are contrasted.
While using 150mA shelves test 150mA mutation current, first on/off switch is got to off state, by 30mA/60mA gear switch switch S 30/60, connect article one branch road, make 150mA gear switch switch S 150 closures again, other switch is in off-state, then give inverter power supply, finally on/off switch is got to on state, with oscillograph capture from on/off switch get on state this time be carved into the time period size in the moment of inverter no-output, and this time value and standard value are contrasted.
While using 300mA shelves test 300mA mutation current, first on/off switch is got to off state, by 30mA/60mA gear switch switch S 30/60, connect article one branch road again, make 150mA gear switch switch S 150 closures, then give inverter power supply, then on/off switch is got to on state again, when electric current that reometer shows reaches near 150mA, start successively that switch S 2 to S6 is closed in order, finally with oscillograph capture from on/off switch get on state this time be carved into the time period size in the moment of inverter no-output, and by this time value and standard value contrast.
The above only, to preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.Every in claim limited range of the present utility model, any modification of making, be equal to replacement, improvement etc., all should be within protection domain of the present utility model.
Claims (2)
1. a leakage current tester, is characterized in that, comprises power on/off switch and eight subcircuits; Article one, branch road comprises 30mA/60mA gear switch switch, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance and the 6th resistance, described the second resistance, described the 3rd resistance, described the 4th resistance, described the 5th resistance, described the 6th resistance are cascaded, and described the first resistance is connected in parallel on described the second resistance two ends; Second branch road comprises 30mA/60mA gear switch switch, the 7th resistance, the 8th resistance, the 9th resistance and the tenth resistance, described the 7th resistance and described the 9th resistance are cascaded, after described the 8th resistance and described the tenth resistance are cascaded, be connected in parallel on described the 7th resistance and the 9th resistance two ends, the node between described the 4th resistance and described the 5th resistance is connected with described the 9th resistance; Article three, branch road comprises the first electric capacity and the 150mA gear switch switch being cascaded, article four, branch road comprises the second electric capacity and the second switch being cascaded, article five, branch road comprises the 3rd electric capacity and the 3rd switch being cascaded, article six, branch road comprises the 4th electric capacity and the 4th switch being cascaded, article seven, branch road comprises the 5th electric capacity and the 5th switch being cascaded, and the 8th branch road comprises the 6th electric capacity and the 6th switch being cascaded.
2. leakage current tester according to claim 1, it is characterized in that, described the first resistance, described the second resistance, described the 3rd resistance, described the 4th resistance, described the 5th resistance, described the 6th resistance, described the 7th resistance, described the 8th resistance, described the 9th resistance, the specification of described the tenth resistance is respectively 50w/2K Ω, 50w/2K Ω, 10w/200 Ω, 10w/200 Ω, 10w/200 Ω, 10w/200 Ω, 10w/3K Ω, 10w/3K Ω, 10w/3K Ω, 10w/3K Ω, described the first electric capacity, described the second electric capacity, described the 3rd electric capacity, described the 4th electric capacity, described the 5th electric capacity, the specification of described the 6th electric capacity is respectively 2.2 μ F, 0.68 μ F, 0.68 μ F, 0.68 μ F, 0.68 μ F, 0.68 μ F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320756828.0U CN203561676U (en) | 2013-11-27 | 2013-11-27 | Leakage current tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320756828.0U CN203561676U (en) | 2013-11-27 | 2013-11-27 | Leakage current tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203561676U true CN203561676U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320756828.0U Expired - Fee Related CN203561676U (en) | 2013-11-27 | 2013-11-27 | Leakage current tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203561676U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111103440A (en) * | 2018-10-26 | 2020-05-05 | 航天科工惯性技术有限公司 | Testing device, system and method for accelerometer core |
| CN113504489A (en) * | 2021-08-16 | 2021-10-15 | 南京理工大学工程技术研究院有限公司 | Capacitance leakage current detection device based on tantalum capacitance leakage current detection and use process |
-
2013
- 2013-11-27 CN CN201320756828.0U patent/CN203561676U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111103440A (en) * | 2018-10-26 | 2020-05-05 | 航天科工惯性技术有限公司 | Testing device, system and method for accelerometer core |
| CN111103440B (en) * | 2018-10-26 | 2022-05-31 | 航天科工惯性技术有限公司 | Testing device, system and method for accelerometer core |
| CN113504489A (en) * | 2021-08-16 | 2021-10-15 | 南京理工大学工程技术研究院有限公司 | Capacitance leakage current detection device based on tantalum capacitance leakage current detection and use process |
| CN113504489B (en) * | 2021-08-16 | 2024-01-30 | 南京理工大学工程技术研究院有限公司 | Capacitance leakage current detection device based on tantalum capacitance leakage current detection and use process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20141127 |
|
| EXPY | Termination of patent right or utility model |