CN204228874U - A kind of testing device for current leakage - Google Patents
A kind of testing device for current leakage Download PDFInfo
- Publication number
- CN204228874U CN204228874U CN201420587385.1U CN201420587385U CN204228874U CN 204228874 U CN204228874 U CN 204228874U CN 201420587385 U CN201420587385 U CN 201420587385U CN 204228874 U CN204228874 U CN 204228874U
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- Prior art keywords
- current
- test
- testing device
- socket
- leakage current
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Abstract
The utility model discloses a kind of testing device for current leakage, comprise housing, with housing with the use of upper cover, the middle part of upper cover is provided with socket, Devices to test inserts socket and tests, socket is connected to power supply by power switch, described socket is also connected with grounding switch, the external outlet of testing current and polarity reversing switch, polarity reversing switch is connected to Devices to test, leakage current tester one end is connected to the output terminal of Devices to test, and the other end is connected to the external outlet of testing current or grounding switch.The beneficial effects of the utility model are: after Devices to test being inserted socket energising, with leakage current tester, it is carried out to the test of leakage current, and read current value, then leakage current is limited in a small value as required, and then improve product safety performance.
Description
Technical field
The utility model relates to technical field leakage current testing technical field, particularly relates to a kind of testing device for current leakage.
Background technology
Leakage current means electric device, electric heating appliance or combined utensil (referring to electronic and electric heating combined utensil), under the voltage effect applied, in electrical equipment mutually insulated metal parts between, or between live part and grounded parts, the electric current formed by the medium around it or insulating surface.The environmental baseline of the structure of this electric current and electrical equipment, material, use and the human body resistance of user itself relevant.If leakage current is more than a threshold value, to threaten the life security of user, leakage current must be limited in a small value when producing product, this has vital role to raising product safety performance, therefore the leakage current of how well test products, is the problem always studied.
Utility model content
The purpose of this utility model is to provide a kind of testing device for current leakage, can facilitate the leakage current tested accurately on electrical equipment, improves test effect.
For reaching this object, the utility model is by the following technical solutions: a kind of testing device for current leakage, comprise housing, with housing with the use of upper cover, the middle part of upper cover is provided with socket, Devices to test inserts socket and tests, socket is connected to power supply by power switch, described socket is also connected with grounding switch, the external outlet of testing current and polarity reversing switch, polarity reversing switch is connected to Devices to test, leakage current tester one end is connected to the output terminal of Devices to test, and the other end is connected to the external outlet of testing current or grounding switch.
Preferably, described power input is connected with isolating transformer, and described isolating transformer is connected to power switch.
Preferably, the output terminal of described Devices to test comprises staff and touches end and safety electric pressure side, and leakage current tester conversion is connected to staff and touches the one end of holding or in safety electric pressure side.
Preferably, described housing one sidewall is provided with the through hole supplying the cable of isolating transformer to pass, and relative sidewall is provided with connector.
Preferably, described connector one end is connected to grounding switch, and the other end is connected to leakage current tester.
Preferably, be bolted between described housing and upper cover or pass through hinge.
Preferably, described leakage current tester is amp gauge.
Preferably, described leakage current tester is also serially connected with a panalarm.
The beneficial effects of the utility model: after Devices to test being inserted socket energising, with leakage current tester, it is carried out to the test of leakage current, and read current value, then leakage current is limited in a small value as required, and then improve product safety performance.
Accompanying drawing explanation
Fig. 1 is perspective view of the present utility model;
Fig. 2 is the outboard structure schematic diagram of upper cover of the present utility model;
Fig. 3 is test circuit schematic diagram of the present utility model.
In figure:
1, housing; 2, upper cover; 3, socket; 4, power switch; 5, polarity reversing switch; 6, the external outlet of testing current; 7, grounding switch; 8, power supply; 9, leakage current tester; 10, Devices to test; 20, isolating transformer; 11, through hole; 12, connector; 101, staff touches end; 102, safety electric pressure side;
Embodiment
The technical solution of the utility model is further illustrated by embodiment below in conjunction with accompanying drawing.
Leakage current be in fact exactly electric wiring or equipment under there is no fault and executing alive effect, flow through the electric current of insulated part.Therefore, it is one of important symbol weighing electrical apparatus insulation quality, is the leading indicator of product safety performance.For this reason, the utility model provides a kind of testing device for current leakage, for the test of the leakage current of device under test 10, and then can learn whether its leakage current meets the standard of product safety performance, by the test of leakage current, leakage current can be limited in a small value, this has vital role to raising product safety performance.As Figure 1-3, this testing device for current leakage comprises housing 1, with housing 1 with the use of upper cover 2, realize the integrated of whole device; Be provided with socket 3 in the middle part of upper cover 2, Devices to test 10 carries out the test of leakage current after inserting socket 3 conducting; Socket 3, by being also connected to power supply 8, is provided with power switch 4 between power supply 8 and socket 3, control the keying of power supply 8;
Socket 3 is also connected with grounding switch 7, the external outlet 6 of testing current and polarity reversing switch 5, wherein polarity reversing switch 5 is connected to Devices to test 10, leakage current tester 9 one end is connected to the output terminal of Devices to test 10, the other end is connected to the external outlet 6 of testing current or grounding switch 7 according to the character of Devices to test 10 is selectable, wherein when Devices to test 10 is a class ground connection product, housing 1 arranges connector 12, the other end of leakage current tester 9 is connected on connector 12, the other end of connector 12 is connected to grounding switch 7, form test loop, when Devices to test 10 is the two earth-free product of class, the other end of leakage current tester 9 is connected to the external outlet 6 of testing current, forms test loop, for test for leaks electric current.
In existing test, treat that electricity measurer 10 is only placed on insulator (insulating with the earth), use electric network source directly to power and carry out leak-testing, but this mode test result is difficult to accurately.Because general headblock and rubber blanket (the modal insulation mode of industry spot) are in industrial environment, because thickness, humidity, temperature, the factors such as surface cleanliness are difficult to accomplish reasonablely to insulate with the earth, its insulation equivalent resistance is change, uncertain, and electric network source and the earth have and directly associate loop (phase line, current potential and the earth of the neutral line are directly related), these can cause a lot of uncertain factors of test data result, test result is difficult to accurately, therefore the present embodiment is connected with isolating transformer 20 at the input end of power supply 8, it is connected to power switch 4, isolating transformer 20 refers to input winding and the transformer exporting winding strap electrical isolation, isolating transformer 20 is in order to avoid accidentally touching electrified body simultaneously, the isolation of transformer is the former secondary coiling of isolation electric current separately, primary side and the electric of secondary side are insulated completely, also this loop is made to isolate, and then it exports testing power supply and greatly no longer includes direct relation (phase line now, the current potential of the neutral line is no longer relevant with the earth), test loop only with testing power supply and treat that the leak condition of electricity measurer is relevant, make test result more accurate.
In the present embodiment, the output terminal of Devices to test 10 comprises staff touch end 101 and safety electric pressure side 102, leakage current tester 9 conversion is connected to the one end in staff touch end 101 or safety electric pressure side 102, and then when after the external outlet 6 of leakage current tester 9 one termination testing current or grounding switch 7, the other end is connected on staff and touches in end 101 and safety electric pressure side 102 and test respectively, using the higher value of leakage current that obtains as final leakage current testing result.
As shown in Figure 1, a sidewall of housing 1 is provided with the through hole 11 supplying the cable of isolating transformer 20 to pass, and connector 12 is located on the relative sidewall of through hole 11, and its one end is connected to grounding switch 7, the other end is connected to leakage current tester 9, and then can form test loop.
Can be bolted between housing 1 and upper cover 2 or by hinge, realize the integrated of whole device and structuring, leakage current tester 9 the present embodiment selects amp gauge, for reading the numerical value of leakage current.
In this enforcement, leakage current tester 9 is also serially connected with a panalarm, the value of leakage current can be set, when the measuring current value flow through is greater than setting value, panalarm will give a warning, then can stop test experiments in real time, also illustrates that the leakage current of Devices to test 10 is not up to standard.
Obviously, above-described embodiment of the present utility model is only used to clearly demonstrate the utility model example, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., within the protection domain that all should be included in the utility model claim.
Claims (8)
1. a testing device for current leakage, it is characterized in that, comprise housing (1), with housing (1) with the use of upper cover (2), the middle part of upper cover (2) is provided with socket (3), Devices to test (10) inserts socket (3) and tests, socket (3) is connected to power supply (8) by power switch (4), described socket (3) is also connected with grounding switch (7), the external outlet of testing current (6) and polarity reversing switch (5), polarity reversing switch (5) is connected to Devices to test (10), leakage current tester (9) one end is connected to the output terminal of Devices to test (10), the other end is connected to the external outlet of testing current (6) or grounding switch (7).
2. testing device for current leakage according to claim 1, it is characterized in that, described power supply (8) input end is connected with isolating transformer (20), and described isolating transformer (20) is connected to power switch (4).
3. testing device for current leakage according to claim 1, it is characterized in that, the output terminal of described Devices to test (10) comprises staff and touches end (101) and safety electric pressure side (102), and leakage current tester (9) conversion is connected to staff and touches the one end of holding in (101) or safety electric pressure side (102).
4. testing device for current leakage according to claim 2, it is characterized in that, described housing (1) sidewall is provided with the through hole (11) supplying the cable of isolating transformer (20) to pass, and relative sidewall is provided with connector (12).
5. testing device for current leakage according to claim 4, is characterized in that, described connector (12) one end is connected to grounding switch (7), and the other end is connected to leakage current tester (9).
6. testing device for current leakage according to claim 1, is characterized in that, is bolted or passes through hinge between described housing (1) and upper cover (2).
7. testing device for current leakage according to claim 1, is characterized in that, described leakage current tester (9) is amp gauge.
8. testing device for current leakage according to claim 1, is characterized in that, (9) are also serially connected with a panalarm to described leakage current tester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420587385.1U CN204228874U (en) | 2014-10-11 | 2014-10-11 | A kind of testing device for current leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420587385.1U CN204228874U (en) | 2014-10-11 | 2014-10-11 | A kind of testing device for current leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204228874U true CN204228874U (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420587385.1U Expired - Fee Related CN204228874U (en) | 2014-10-11 | 2014-10-11 | A kind of testing device for current leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204228874U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679223A (en) * | 2020-06-08 | 2020-09-18 | 上海市计量测试技术研究院 | Leakage current test equipment |
-
2014
- 2014-10-11 CN CN201420587385.1U patent/CN204228874U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679223A (en) * | 2020-06-08 | 2020-09-18 | 上海市计量测试技术研究院 | Leakage current test equipment |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20171011 |