CN102095902A - Surface leakage current testing and shielding tool for electric equipment - Google Patents
Surface leakage current testing and shielding tool for electric equipment Download PDFInfo
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- CN102095902A CN102095902A CN2010105375655A CN201010537565A CN102095902A CN 102095902 A CN102095902 A CN 102095902A CN 2010105375655 A CN2010105375655 A CN 2010105375655A CN 201010537565 A CN201010537565 A CN 201010537565A CN 102095902 A CN102095902 A CN 102095902A
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- leakage current
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- surface leakage
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Abstract
The invention relates to a surface leakage current testing and shielding tool for electric equipment, which comprises a double-layer conductive cloth strip, hook and loop fasteners, wiring terminals, drainage wires and an infrared remote measurement direct-current high-voltage microampere meter, wherein a flat copper wire the length of which is equal to that of the conductive cloth strip is laid in the double-layer conductive cloth strip, and the flat copper wire and the cloth strip are tightly contacted with each other. Two ends of the flat copper wire are respectively short-connected and respectively provided with a wiring terminal (HDSV round pre-insulated terminal), the wiring terminals are fixed outside the cloth strip and are connected to a shielding wiring post of a tester through the shielding drainage wires. Two ends of the conductive cloth strip are respectively sewn with a section of hook and loop fastener so as to enable the double-layer conductive cloth strip to be wound on the surface of a sleeve conveniently to form a closed shielding ring for shielding surface leakage current effectively. The HV-B type infrared remote measurement direct-current high-voltage microampere meter is arranged to guarantee safety of testing staffs and measure the surface leakage current accurately. The surface leakage current testing and shielding tool provided by the invention can effectively shield surface leakage current, has high testing accuracy, and can meet the requirements of field tests.
Description
Technical field
The present invention relates to the shield detection equipment technical field of the surface leakage current of Zinc-Oxide Arrester, current transformer, voltage transformer (VT), transformer high-voltage sleeve pipe, especially a kind of electrical equipment surface leakage current test shielding instrument.
Background technology
At present, there is not special-purpose surface leakage current test shielding instrument in the test of equipment dc leakage-current such as Zinc-Oxide Arrester, current transformer, voltage transformer (VT), transformer high-voltage sleeve pipe and insulation resistance.In the wet environment, the equipment surface leakage current can be very big, has a strong impact on the accuracy of measurement, even cause test result to exceed standard.
Summary of the invention
The present invention overcomes the problem of above-mentioned technical existence, and a kind of new exclusive electrical equipment surface leakage current test shielding instrument is provided, and the equipment surface leakage current causes the big problem of measured deviation in the wet environment in order to solve, and satisfies the site test requirement.
Technical scheme of the present invention is: electrical equipment surface leakage current test shielding instrument is used for the shielding of test surface leakage current and the test of dc leakage-current and insulation resistance.Mainly form by bilayer conduction cloth, magic tape, connection terminal, drainage thread, infrared telemetry high direct voltage microampere meter.Wherein, in the double-deck conduction cloth, the tiling flat type copper wire, length is identical with conductive fabric, and both contact closely, become one on electric.The flat type copper wire two ends are short circuit respectively, respectively draws a connection terminal (the round pre insulated terminal of HDSV) and is fixed in outside the cloth, by the drainage thread of band shielding, is connected on the testing tool shielding binding post, to eliminate the influence of surface leakage current.One section magic tape is respectively made at the two ends of conduction cloth, and (magic tape width etc. is wider than the cloth width), so that this conduction cloth is wrapped in sleeve surface easily and forms closed shading ring, contact is good, effectively the shielded surfaces leakage current.For tester's safety and accurate surface measurements leakage current, dispose a multi-functional high direct voltage microampere meter of HV-B type infrared telemetry.
The technology of the present invention index:
1, is applicable to surface leakage current shielding and test in the test of equipment dc leakage-current such as Zinc-Oxide Arrester, current transformer, voltage transformer (VT), transformer high-voltage sleeve pipe and insulation resistance.
2, a cover shielding instrument comprises four specifications, is respectively 320mm, 570mm, 920mm, 1250mm, quantity difference 4,4,8,8.
3, the wide 1.5cm of double-deck conductive fabric, inner flat type copper wire width is 0.8cm, two ends thread gluing belt length 20cm.
4, drainage line length 3.5m has shielding; The multi-functional high direct voltage microampere meter of infrared telemetry, range 0-5mA, precision＜1.0% (full scale) ± a word, receiving angle≤60 degree, receiving range≤10m.
Using method of the present invention and process:
1, corresponding concrete equipment is selected the shielding instrument of suitable dimension.
2, catch shielding instrument two ends, around first and second full skirt linkage section one circle of outer porcelain (or organic material) the sleeve pipe lower end of equipment, the end button cements.
3, draw a drainage thread from connection terminal and receive surveying instrument shield terminal (on the shielding termination " G " as megohmmeter) or ground terminal, effectively the shielded surfaces leakage current.
4, applied voltage test, testing crew and equipment keep a safe distance, and hand takes the infrared telemetry microampere meter to read the surface leakage current value.
5, measurement finishes, and closes the infrared telemetry microampere meter, after equipment is fully discharged, takes off the shielding instrument.
Of the present invention have a suitable effect:
Shield effectively shielded surfaces leakage current of instrument when 1, the insulation resistance of electrical equipment and dc leakage-current are tested.
2, accurate surface measurements leakage current under wet weather truly reflects apparatus insulated situation, improves test accuracy, for equipment state overhauling provides authentic data.
3, can closely wrap up outer porcelain (or organic material) cover of equipment surface, effectively draw surface leakage current.
4, external metallization conductive layer upper and lower side can contact with equipment surface is complete, and all there is a fixing drainage binding post at two ends, can connect microampere meter from drainage thread, read the surface leakage current value accurately.
5, have anti-lost measure, satisfy the site test requirement.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Wherein: 1, double-deck conduction cloth 2, magic tape 3, connection terminal 4, drainage thread 5, infrared telemetry high direct voltage microampere meter
Embodiment
The invention will be further described below in conjunction with accompanying drawing, and electrical equipment surface leakage current test shielding instrument is made up of bilayer conduction cloth 1, magic tape 2, connection terminal 3, drainage thread 4, infrared telemetry high direct voltage microampere meter 5.Wherein, tiling flat type copper wire in the double-deck conduction cloth 1, length is identical with conductive fabric, and both contact closely, become one on electric.The flat type copper wire two ends are short circuit respectively, respectively draws a connection terminal 3 (the round pre insulated terminal of HDSV) and is fixed in outside the cloth, by the drainage thread 4 of band shielding, is connected on the testing tool shielding binding post, to eliminate the influence of surface leakage current.One section magic tape 2 is respectively made at the two ends of double-deck conduction cloth 1, and magic tape 2 width etc. are wider than the cloth width, is wrapped in sleeve surface easily and forms closed shading ring so that bilayer is conducted electricity cloth 1, and contact is good, effectively the shielded surfaces leakage current.For tester's safety and accurate surface measurements leakage current, dispose a multi-functional high direct voltage microampere meter 5 of HV-B type infrared telemetry.
Claims (1)
1. the electrical equipment surface leakage current is tested the shielding instrument, form by bilayer conduction cloth (1), magic tape (2), connection terminal (3), drainage thread (4) infrared telemetry high direct voltage microampere meter (5), it is characterized in that, tiling flat type copper wire in the double-deck conduction cloth (1), copper cash length is identical with double-deck conduction cloth (1), and both contact closely; A connection terminal (3) is drawn at the flat type copper wire two ends respectively, and connection terminal (3) is connected on the testing tool shielding binding post by the drainage thread (4) of band shielding; One section magic tape (2) is respectively made at the two ends of double-deck conduction cloth (1); Infrared telemetry high direct voltage microampere meter (5) cooperates with above-mentioned each parts finishes test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105375655A CN102095902A (en) | 2010-11-10 | 2010-11-10 | Surface leakage current testing and shielding tool for electric equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105375655A CN102095902A (en) | 2010-11-10 | 2010-11-10 | Surface leakage current testing and shielding tool for electric equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102095902A true CN102095902A (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105375655A Pending CN102095902A (en) | 2010-11-10 | 2010-11-10 | Surface leakage current testing and shielding tool for electric equipment |
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| CN (1) | CN102095902A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336154A (en) * | 2013-06-09 | 2013-10-02 | 辽宁省电力有限公司大连供电公司 | Shielding device for insulation test |
| CN103792415A (en) * | 2014-02-13 | 2014-05-14 | 国家电网公司 | Anti-interference device for lightning arrester leakage current detection |
| CN105182206A (en) * | 2015-11-02 | 2015-12-23 | 国网山东省电力公司聊城供电公司 | Sleeve surface leakage current shielding tool and application thereof |
| CN109298226A (en) * | 2018-08-17 | 2019-02-01 | 国网福建省电力有限公司检修分公司 | A kind of DC microammeter of more threshold values Intelligent acousto-optic alarms |
| CN110488052A (en) * | 2019-08-30 | 2019-11-22 | 国网山东省电力公司平阴县供电公司 | A kind of electric tool insulation detection device |
-
2010
- 2010-11-10 CN CN2010105375655A patent/CN102095902A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336154A (en) * | 2013-06-09 | 2013-10-02 | 辽宁省电力有限公司大连供电公司 | Shielding device for insulation test |
| CN103792415A (en) * | 2014-02-13 | 2014-05-14 | 国家电网公司 | Anti-interference device for lightning arrester leakage current detection |
| CN105182206A (en) * | 2015-11-02 | 2015-12-23 | 国网山东省电力公司聊城供电公司 | Sleeve surface leakage current shielding tool and application thereof |
| CN109298226A (en) * | 2018-08-17 | 2019-02-01 | 国网福建省电力有限公司检修分公司 | A kind of DC microammeter of more threshold values Intelligent acousto-optic alarms |
| CN110488052A (en) * | 2019-08-30 | 2019-11-22 | 国网山东省电力公司平阴县供电公司 | A kind of electric tool insulation detection device |
| CN110488052B (en) * | 2019-08-30 | 2021-08-13 | 国网山东省电力公司平阴县供电公司 | Electric tool insulation detection device |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110615 |