CN102866267A - Forced grounding device for test apparatus in power system - Google Patents
Forced grounding device for test apparatus in power system Download PDFInfo
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- CN102866267A CN102866267A CN2012103370815A CN201210337081A CN102866267A CN 102866267 A CN102866267 A CN 102866267A CN 2012103370815 A CN2012103370815 A CN 2012103370815A CN 201210337081 A CN201210337081 A CN 201210337081A CN 102866267 A CN102866267 A CN 102866267A
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Abstract
The invention discloses a forced grounding device for a test apparatus in a power system. The forced grounding device is connected between a power supply and the test apparatus, and comprises an enclosure, a plug, a socket, a grounding end button, a clamping groove, a male tab and a control circuit, wherein the plug is arranged on the enclosure, and is connected with the power supply; the socket is connected with the plug of the test apparatus; the grounding end button is fixed on the enclosure, and is fixedly connected with a grounding terminal on the test apparatus; the clamping groove is reserved in the enclosure; the male tab is in close contact with the clamping groove, and is pluggable; the control circuit is arranged in the enclosure; and the clamping groove is communicated with the interior of the grounding end button. When the test apparatus is adopted for the diagnostic assessment of power grid equipment, the forced grounding device is connected between the test apparatus and the power supply, and the test apparatus cannot be electrified under the condition that the test apparatus is not reliably grounded, and can be electrified and normally work only after being reliably grounded, so that the safety of staff is protected, and hidden dangers are eliminated.
Description
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Technical field
The present invention relates to test instrument ground system in the electric system, relate in particular to the test apparatus protective earthing device.
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Background technology
The effect of ground connection is protection equipment and personal safety in the electric system, suppresses simultaneously the interference of outer signals.According to its action principle, mainly be divided into two large classes: protective ground and working earthing.The main-transformer neutral ground method of operation in the electric system is exactly the principle of working earthing, and the grounding requirement that the shell of main-transformer is different 2 then belongs to the category of protective ground.
As the production run department of power industry, bearing the important task of incessantly the electrical network all devices being carried out diagnostic assessment, it has disposed instrument and equipments a large amount of, various test functions.The manufacturing commercial city of these instrument and meters produces the supply of material according to the relevant industries standard, has passed through corresponding MC authentication.For protection test staff's safety, all be provided with corresponding ground terminal on the metal shell of these on-the-spot a large amount of test apparatuses that use, as shown in Figure 1, be provided with ground terminal 101 on the test apparatus 10.
When using these test apparatuses, the staff at first should couple together the ground terminal of instrument and good earth body with ground wire, to guarantee staff's personal safety; Again the plug 102 on the test apparatus 10 is connected with the socket 20 of power supply.But according to on-the-spot actual supervisor's situation of safety supervision department, a lot of staff have ignored the correct use of ground terminal in order to follow the line of least resistance, so that ground terminal becomes ornaments substantially, thereby bring certain potential safety hazard.
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Summary of the invention
The purpose of this invention is to provide a kind of earthing device that existing test apparatus external and internal compositions can force to carry out again ground protection that do not change.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: test apparatus is forced earthing device in a kind of electric system, it is used for being connected between power supply and the test apparatus, it comprises casing, be arranged on the socket that is used for the plug that is connected with power supply on the casing and is used for being connected with the plug of test apparatus, be fixedly mounted on the casing and be used for test apparatus on the ground connection terminal that is fixedly connected of ground terminal, be opened in draw-in groove on the casing, with described draw-in groove close contact and pluggable inserted sheet, be arranged on the control circuit in the casing; Described draw-in groove is connected with described ground connection terminal inside, described control circuit comprises two-way, one the tunnel is the sound circuit that is formed by power supply conditioning module, speech control module and normally closed microswitch, and one the tunnel for by main relay, often drive the main energize control circuit that microswitch, power supply conditioning module form; Under the use state, plug and power supply on the described casing join, and the plug on the test apparatus is connected with socket on the described casing, and the ground terminal on the test apparatus and the ground connection terminal on the casing are fixedly connected; Described inserted sheet is connected with ground wire, and when described inserted sheet does not insert in the draw-in groove fully, described power supply conditioning module, normally closed microswitch, speech control module form path, carry out the ground connection voice suggestion; When described inserted sheet inserts in the draw-in groove fully, described normally closed microswitch is opened, the ground connection voice suggestion stops, the described microswitch of often opening is closed, the coil of described main relay, power supply conditioning module, often drive microswitch and form path, the normal opened contact of described main relay is closed, is the test apparatus continued power, and described test apparatus effective grounding.
Further, described main energize control circuit also comprises and the pilot lamp of often driving microswitch and being in series, and when main energize control circuit is in path, described pilot lamp is in illuminating state.
Described test apparatus power supply is civil power 220V or 380V.
On described casing, also be equipped with to be connected with described inserted sheet phase elasticity and be used for release-push that inserted sheet is ejected from described draw-in groove.
Described sound circuit comprises the hummer that also is installed on the casing.
Owing to adopt technique scheme; the present invention obtains following technique effect: when adopting test apparatus that grid equipment is carried out diagnostic assessment; force earthing device by access the present invention between test apparatus and power supply; so that test apparatus can't be subjected to electricity in the situation that cannot not be abutted against ground; only have behind the test apparatus reliable ground; it can be subjected to electricity and normal operation, thereby has protected staff's safety, removes a hidden danger.
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Description of drawings
Accompanying drawing 1 is test instrument ground synoptic diagram in the prior art;
Accompanying drawing 2 is forced earthing device and test apparatus connection diagram for the present invention;
Accompanying drawing 3 is forced the earthing device circuit theory diagrams for the present invention;
Accompanying drawing 4 is forced main energize control principle drawing in the earthing device for the present invention;
Accompanying drawing 5 is forced the earthing device schematic appearance for the present invention;
Wherein: 100, force earthing device; 1, casing; 2, plug; 3, socket; 4, ground connection terminal; 5, draw-in groove; 6, inserted sheet; 7, control circuit; 71, power supply conditioning module; 72, speech control module; 73, normally closed microswitch; 74, main relay; 741, normal opened contact; 742, coil; 75, often drive microswitch; 76, release-push; 77, hummer; 78, pilot lamp; 10, test apparatus; 101, ground terminal; 102, plug; 20, socket;
Embodiment
Below in conjunction with embodiment shown in the drawings the present invention is made following detailed description:
Referring to shown in Figure 2, the present invention forces earthing device 100 to be connected between power supply and the test apparatus 10, this pressure earthing device 100 does not need any change is done in test apparatus 10 inside, just its ground terminal 101 is fixedly connected with forcing earthing device 100, therefore, easier on operation is used.
The below will force the specific implementation of earthing device to describe to the present invention:
Referring to Fig. 3 to shown in Figure 5, force earthing device 100 to comprise casing 1, be arranged on the socket 3 that is used for the plug (not shown) that is connected with power supply on the casing 1 and is used for being connected with the plug 102 of test apparatus, be fixedly mounted on the casing 1 and be used for test apparatus on the ground connection terminal 4 that is fixedly connected of ground terminal 101, be opened in draw-in groove 5 on the casing, with draw-in groove 5 close contacts and pluggable inserted sheet 6, be arranged on the control circuit 7 in the casing.
Above-mentioned ground connection terminal 4 and draw-in groove 5 are internal communication, thereby so that ground connection terminal 4 is always equipotential with draw-in groove.
Described control circuit 7 comprises two-way, and one the tunnel is the sound circuit that is electrically connected and is formed by power supply conditioning module 71, speech control module 72, normally closed microswitch 73 and hummer 77; One the tunnel for by main relay 74, often drive the main energize control circuit that microswitch 75, power supply conditioning module 71 form.Wherein, main relay 74 comprises normal opened contact 741, coil 742, and described normal opened contact 741 1 ends are connected with power supply, and the other end and test apparatus 10 are electrically connected.Described coil 742, often drive microswitch 75 and be in series with power supply conditioning module 71 and form the loop.
Under the use state, plug and power supply on the casing 1 join, and the plug 102 on the test apparatus 10 is connected with socket 3 on the casing, and the ground terminal 101 on the test apparatus 10 is fixedly connected with the ground connection terminal 4 on the casing 1; Simultaneously, inserted sheet 6 one ends are by ground connection, and when inserted sheet 6 did not insert in the draw-in groove 5 fully, power supply conditioning module 71, normally closed microswitch 73, speech control module 72 and hummer 77 formed path, carry out the ground connection voice suggestion; When inserted sheet 6 inserts in the draw-in groove 5 fully, described normally closed microswitch 73 is opened, often driving microswitch 75 is closed, power supply conditioning module 71, the coil 742 of often driving microswitch 75, main relay 74 form paths, be that coil 742 must be electric, thereby normal opened contact 741 closures of main relay 74, power supply directly is the test apparatus continued power by closed main relay 74.Simultaneously, because ground connection terminal 4 and the draw-in groove 5 of this pressure earthing device are internal communication, when inserted sheet 6 inserts in the draw-in groove fully, ground terminal on the test apparatus is successively by chassics earth terminal, draw-in groove, inserted sheet, arrive at last ground wire and shift with the ground connection of realizing the instrument ground terminal, thus the effective grounding of realization test apparatus.
In the present embodiment, main energize control circuit also comprises and the pilot lamp 78 of often driving microswitch 75 and being in series, and when it is in path, pilot lamp 78 is in illuminating state, as shown in Figure 4.
Simultaneously, the release-push 76 that is connected with inserted sheet 6 phase elasticity is installed also on casing 1, shown release-push 76 is used for inserted sheet 6 is ejected, thereby disconnects with normally closed microswitch 73, often opens being connected of microswitch 75.
The specific works process is as follows: the plugs and sockets end that at first will force earthing device 100 is corresponding respectively to be connected with power supply and test apparatus, at this moment, although inserted sheet does not insert, but force the power supply conditioning module 71 in the earthing device 100 to be subjected to electricity to carry out work, power supply after normally closed microswitch 73 will be nursed one's health and speech control module 72 are connected, so instrument constantly carries out " asking proper grounding " voice suggestion, this often drives microswitch 75 and is in the state of cut-offfing, the normal opened contact 741 of main relay 74 is failure to actuate, and test apparatus can't get electric work.
Then, will insert two microswitches 73 of draw-in groove 5 rear promotions, 75 with the inserted sheet 6 of ground wire, wherein, normally closed microswitch 73 will be pushed into off-state by closure state, so phonic warning stops; Often drive microswitch 75 and be pushed to closure state by off-state, so the coil 742 of the main relay 74 of main energize control circuit and pilot lamp 78 are by power connection, normal opened contact 741 closures of main relay 74, referring to shown in Figure 4, thereby test apparatus must be established the normal operation of beginning by cable.
Hummer 77 carries out voice suggestion when inserted sheet 6 does not insert, pilot lamp 78 is indicated when inserted sheet 6 inserts, and with release-push 76 inserted sheet 6 is taken out behind the end-of-job.
Among the present invention, inserted sheet 6 and draw-in groove 4 are close contacts, guarantee that ground connection is reliable.Power supply is the single-phase 220V of civil power or three-phase 380V.
Earthing device is forced in the application of the invention, can remind the staff to carry out exact connect ion to the protective earth terminal of instrument, allow instrument after cannot not be abutted against to be subjected to electricity in the situation on ground, to only have the instrument reliable ground, instrument can be subjected to electricity and normal operation, guarantees the personal safety in the work.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with technique can understand content of the present invention and according to this enforcement, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (5)
1. test apparatus is forced earthing device in the electric system, it is characterized in that: it is used for being connected between power supply and the test apparatus, it comprises casing, be arranged on the socket that is used for the plug that is connected with power supply on the casing and is used for being connected with the plug of test apparatus, be fixedly mounted on the casing and the ground connection terminal that is used for being connected with ground terminal on the test apparatus, be opened in draw-in groove on the casing, with described draw-in groove close contact and pluggable inserted sheet, be arranged on the control circuit in the casing; Described draw-in groove is connected with described ground connection terminal inside, described control circuit comprises two-way, one the tunnel is the sound circuit that is formed by power supply conditioning module, speech control module and normally closed microswitch, and one the tunnel for by main relay, often drive the main energize control circuit that microswitch, power supply conditioning module form; Under the use state, plug and power supply on the described casing join, and the plug on the test apparatus is connected with socket on the described casing, and the ground terminal on the test apparatus and the ground connection terminal on the casing are fixedly connected; Described inserted sheet is connected with ground wire, and when described inserted sheet does not insert in the draw-in groove fully, described power supply conditioning module, normally closed microswitch, speech control module form path, carry out the ground connection voice suggestion; When described inserted sheet inserts in the draw-in groove fully, described normally closed microswitch is opened, the ground connection voice suggestion stops, the described microswitch of often opening is closed, the coil of described main relay, power supply conditioning module, often drive microswitch and form path, the normal opened contact of described main relay is closed, is the test apparatus continued power, and described test apparatus effective grounding.
2. test apparatus is forced earthing device in the electric system according to claim 1, it is characterized in that: described main energize control circuit also comprises and the pilot lamp of often driving microswitch and being in series, when main energize control circuit is in path, described pilot lamp is in illuminating state.
3. test apparatus is forced earthing device in the electric system according to claim 1 and 2, and it is characterized in that: described test apparatus power supply is the single-phase 220V of civil power or three-phase 380V.
4. test apparatus is forced earthing device in the electric system according to claim 1, it is characterized in that: also be equipped with on described casing and be connected the release-push that ejects from described draw-in groove for inserted sheet with described inserted sheet phase elasticity.
5. test apparatus is forced earthing device in the electric system according to claim 1, and it is characterized in that: described sound circuit comprises the hummer that also is installed on the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210337081.5A CN102866267B (en) | 2012-09-13 | 2012-09-13 | Forced grounding device for test apparatus in power system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210337081.5A CN102866267B (en) | 2012-09-13 | 2012-09-13 | Forced grounding device for test apparatus in power system |
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| Publication Number | Publication Date |
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| CN102866267A true CN102866267A (en) | 2013-01-09 |
| CN102866267B CN102866267B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210337081.5A Active CN102866267B (en) | 2012-09-13 | 2012-09-13 | Forced grounding device for test apparatus in power system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884352A (en) * | 2019-03-14 | 2019-06-14 | 贵州大学 | Has the Electric Security Tester of safety instruction structure for electronics inspection during manufacture |
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|---|---|---|---|---|
| CN101204945A (en) * | 2006-12-22 | 2008-06-25 | 龙鲲鹏 | Car enforce seat belt device |
| KR100899078B1 (en) * | 2008-07-31 | 2009-05-25 | 김준규 | Lam research tcp/rainbow series electro static chuck dechucking kit |
| CN201674133U (en) * | 2010-03-18 | 2010-12-15 | 海盐县供电局 | On-site grounding wire controller |
| CN201800555U (en) * | 2010-04-27 | 2011-04-20 | 郑烽 | Compulsive safety belt plug-in system |
| CN202854172U (en) * | 2012-09-13 | 2013-04-03 | 江苏省电力公司苏州供电公司 | Test apparatus mandatory grounding device in electric power system |
-
2012
- 2012-09-13 CN CN201210337081.5A patent/CN102866267B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101204945A (en) * | 2006-12-22 | 2008-06-25 | 龙鲲鹏 | Car enforce seat belt device |
| KR100899078B1 (en) * | 2008-07-31 | 2009-05-25 | 김준규 | Lam research tcp/rainbow series electro static chuck dechucking kit |
| CN201674133U (en) * | 2010-03-18 | 2010-12-15 | 海盐县供电局 | On-site grounding wire controller |
| CN201800555U (en) * | 2010-04-27 | 2011-04-20 | 郑烽 | Compulsive safety belt plug-in system |
| CN202854172U (en) * | 2012-09-13 | 2013-04-03 | 江苏省电力公司苏州供电公司 | Test apparatus mandatory grounding device in electric power system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884352A (en) * | 2019-03-14 | 2019-06-14 | 贵州大学 | Has the Electric Security Tester of safety instruction structure for electronics inspection during manufacture |
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| CN102866267B (en) | 2014-08-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU ELECTRIC POWER COMPANY STATE ELECTRIC NET Effective date: 20130419 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20130419 Address after: 215002 No. 555 labour Road, Jiangsu, Suzhou Applicant after: Suzhou Power Supply Co., Ltd. of Jiangsu Electric Power Company Applicant after: Jiangsu Electric Power Company Applicant after: State Grid Corporation of China Address before: 215002 No. 555 labour Road, Jiangsu, Suzhou Applicant before: Suzhou Power Supply Co., Ltd. of Jiangsu Electric Power Company |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |