CN204613251U - For the anti induction voltage connection box of line parameter circuit value test - Google Patents
For the anti induction voltage connection box of line parameter circuit value test Download PDFInfo
- Publication number
- CN204613251U CN204613251U CN201520145472.6U CN201520145472U CN204613251U CN 204613251 U CN204613251 U CN 204613251U CN 201520145472 U CN201520145472 U CN 201520145472U CN 204613251 U CN204613251 U CN 204613251U
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- China
- Prior art keywords
- insulating bar
- lead wire
- metal lead
- voltage connection
- vacuum contactor
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- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 230000006698 induction Effects 0.000 title claims abstract description 11
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 27
- 238000010891 electric arc Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model is a kind of anti induction voltage connection box for line parameter circuit value test, a metal lead wire folder is installed in the front end of insulating bar, the front end of this metal lead wire folder is arc crotch, the inwall of this arc crotch installs two symmetrically arranged arc contact chips, the coaxial mounting handle in rear end of insulating bar, insulating bar is hollow structure, its inner close metal lead wire folder side fixedly mounts a vacuum contactor, one of them contact of this vacuum contactor to be pressed from both sides with metal lead wire by high-voltage connection and is connected, another contact is connected with testing equipment by test lead, the control power lead of vacuum contactor is drawn in insulating bar bottom, be connected on 220V power supply by gauge tap.The utility model is a kind of anti induction voltage connection box for line parameter circuit value test, this device is by increasing vacuum contactor, can effectively isolate line influence voltage, and without arc discharge when connection or dismounting cable guide, thus ensured the safety of staff.
Description
Technical field
The utility model relates to High-Voltage Experimentation Technology field, especially a kind of anti induction voltage connection box for line parameter circuit value test.
Background technology
Before transmission line of electricity that is newly-built or reconstruction puts into operation, need to measure the power frequency parameters such as positive sequence impedance, zero sequence impedance, positive sequence electric capacity, zero sequence electric capacity, to provide relay protection setting value, run significant to the normal table of electric system.Along with transformer station's quantity and transmission line capability constantly increase, in order to make full use of existing transmission of electricity corridor, mostly adopt with working line with the parallel erection of tower building ultra-high-tension power transmission line.Working line is by the coupling inductance between circuit and electric capacity, and newly-built circuit induces higher power-frequency voltage, and when circuit is longer, induced voltage can reach several ten thousand volts, brings great difficulty to line parameter circuit value test job.At present, when test connection, be first connected with testing tool p-wire one end, the p-wire other end is connected with the cable guide of insulating bar end.The hand-held insulating bar of tester, hangs over cable guide on test line, namely completes the wiring process of line parameter circuit value test.But find in repeatedly execute-in-place process, when test line induced voltage is higher, cable guide is connected on test line or from test line and removes cable guide by tester, all can produce strong arc discharge, jeopardize the personal safety of tester.
Summary of the invention
The purpose of this utility model is to make up the deficiencies in the prior art part, provides a kind of safe and reliable anti induction voltage connection box for line parameter circuit value test.
The purpose of this utility model is realized by following technological means:
A kind of anti induction voltage connection box for line parameter circuit value test, comprise insulating bar, metal lead wire folder and handle, a metal lead wire folder is installed in the front end of insulating bar, the front end of this metal lead wire folder is arc crotch, the inwall of this arc crotch installs two symmetrically arranged arc contact chips, the coaxial mounting handle in rear end of insulating bar, it is characterized in that: insulating bar is hollow structure, its inner close metal lead wire folder side fixedly mounts a vacuum contactor, one of them contact of this vacuum contactor to be pressed from both sides with metal lead wire by high-voltage connection and is connected, another contact is connected with testing equipment by test lead, the control power lead of vacuum contactor is drawn in insulating bar bottom, be connected on 220V power supply by gauge tap.
And two described arc contact chips are all connected by holddown spring with between the inwall of metal lead wire grip hold arc shape crotch.
And coaxially on the insulating bar being positioned at handle front end install a retaining ring, the cross-sectional area of this retaining ring is greater than the cross-sectional area of insulating bar.
Advantage of the present utility model and good effect are:
1, the insulating bar of this device is hollow structure, its internal fixtion vacuum contactor, vacuum contactor is increased between pressing from both sides at p-wire and metal lead wire, contacts of contactor is disconnected when wiring, can effectively isolate line influence voltage, and without arc discharge when connection or dismounting cable guide, thus safety coefficient when improve work, ensure that the personal safety of tester.
2, this device is simple to operation, only needs to open or closing switch, under safing prerequisite, effectively raises work efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is electrical connection schematic diagram of the present utility model.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing; It should be noted that, the present embodiment is narrative, is not determinate, can not limit protection domain of the present utility model with this.
A kind of anti induction voltage connection box for line parameter circuit value test, comprise insulating bar 4, metal lead wire folder 8 and handle 1, the good metal lead wire folder of an electric conductivity is installed in the front end of insulating bar, the front end of this metal lead wire folder is arc crotch, the inwall of this arc crotch installs two symmetrically arranged arc contact chips 10, two arc contact chips are all connected by holddown spring 9 with between the inwall of metal lead wire grip hold arc shape crotch, and metal lead wire folder keeps being electrically connected by holddown spring and contact chip and test line.The coaxial mounting handle in rear end of insulating bar, grips for tester.For increasing security, a coaxial installation retaining ring 2 on the insulating bar of handle front end, the cross-sectional area of this retaining ring is greater than the cross-sectional area of insulating bar.
Innovative point of the present utility model is: insulating bar is hollow structure, its inner close metal lead wire folder side fixedly mounts a vacuum contactor 6, one of them contact of this vacuum contactor is pressed from both sides with metal lead wire by high-voltage connection 7 and is connected, another contact is connected with testing equipment 12 by test lead 11, good electric insulation is had between two contacts, the control power lead 5 of vacuum contactor is drawn in insulating bar bottom, is connected on 220V power supply by gauge tap 3.
Principle of work of the present utility model is:
As depicted in figs. 1 and 2, when gauge tap disconnects, vacuum contactor two contacts keep insulation, and test lead is not connected with high-voltage connection.After gauge tap is closed, electromagnetic contactor coil is by electric current and produce electromagnetic force, two contact rapid closings, and test lead to be pressed from both sides with metal lead wire by high-voltage connection and is connected.
Use step of the present utility model is as follows:
1, test lead is connected to testing equipment, contactor is controlled power lead and be connected to 220V power supply and disconnect gauge tap;
2, tester's gripping handle, by metal lead wire clamping connection on test line;
3, Closed control switch, now contactor action, test line and testing equipment link together by test lead;
4, measuring circuit parameter is started;
5, after line parameter circuit value is completed, disconnect gauge tap, contactor resets, the connection between open test lead-in wire and high-voltage connection;
6, tester's gripping handle, removes metal lead wire folder;
7, remove the connection of test lead and testing equipment, remove the connection controlling power lead and 220V power supply.
Claims (3)
1. the anti induction voltage connection box for line parameter circuit value test, comprise insulating bar, metal lead wire folder and handle, a metal lead wire folder is installed in the front end of insulating bar, the front end of this metal lead wire folder is arc crotch, the inwall of this arc crotch installs two symmetrically arranged arc contact chips, the coaxial mounting handle in rear end of insulating bar, it is characterized in that: insulating bar is hollow structure, its inner close metal lead wire folder side fixedly mounts a vacuum contactor, one of them contact of this vacuum contactor to be pressed from both sides with metal lead wire by high-voltage connection and is connected, another contact is connected with testing equipment by test lead, the control power lead of vacuum contactor is drawn in insulating bar bottom, be connected on 220V power supply by gauge tap.
2. a kind of anti induction voltage connection box for line parameter circuit value test according to claim 1, is characterized in that: two described arc contact chips are all connected by holddown spring with between the inwall of metal lead wire grip hold arc shape crotch.
3. a kind of anti induction voltage connection box for line parameter circuit value test according to claim 1, is characterized in that: coaxially on the insulating bar being positioned at handle front end install a retaining ring, and the cross-sectional area of this retaining ring is greater than the cross-sectional area of insulating bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520145472.6U CN204613251U (en) | 2015-03-13 | 2015-03-13 | For the anti induction voltage connection box of line parameter circuit value test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520145472.6U CN204613251U (en) | 2015-03-13 | 2015-03-13 | For the anti induction voltage connection box of line parameter circuit value test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204613251U true CN204613251U (en) | 2015-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520145472.6U Active CN204613251U (en) | 2015-03-13 | 2015-03-13 | For the anti induction voltage connection box of line parameter circuit value test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204613251U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301295A (en) * | 2015-10-28 | 2016-02-03 | 国网天津市电力公司 | Indoor cable inlet transformer winding short-circuiting device |
| CN109001563A (en) * | 2018-06-20 | 2018-12-14 | 国网安徽省电力有限公司滁州供电公司 | A kind of line measurement method and system |
-
2015
- 2015-03-13 CN CN201520145472.6U patent/CN204613251U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301295A (en) * | 2015-10-28 | 2016-02-03 | 国网天津市电力公司 | Indoor cable inlet transformer winding short-circuiting device |
| CN109001563A (en) * | 2018-06-20 | 2018-12-14 | 国网安徽省电力有限公司滁州供电公司 | A kind of line measurement method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |