CN202749745U - Special-purpose grounding lead wire for intersecting interconnection box maintenance - Google Patents
Special-purpose grounding lead wire for intersecting interconnection box maintenance Download PDFInfo
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- CN202749745U CN202749745U CN 201220439479 CN201220439479U CN202749745U CN 202749745 U CN202749745 U CN 202749745U CN 201220439479 CN201220439479 CN 201220439479 CN 201220439479 U CN201220439479 U CN 201220439479U CN 202749745 U CN202749745 U CN 202749745U
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Abstract
一种交叉互联箱检修专用接地引线，它包括接地端和接线端，所述的接地端为一可压接线夹，可方便牢固接地；在所述可压接线夹上向外延伸出一黑色线缆，黑色线缆另一端通过铜接线端子分出两组绝缘引线，每一组绝缘引线包括红、绿、黄三种线缆，且在每一绝缘引线的自由端分别固定一个接线夹子。本实用新型结构简单，使用方便，操作安全，能准确无误的直接检验出开关柜线路是否带电，并将交叉互联箱中的感应电全部的导入到大地中，杜绝交叉互联箱中存在感应电的可能，保护了检修人员的人身安全。
A special ground lead wire for maintenance of a cross interconnection box, which includes a ground terminal and a terminal, the ground terminal is a crimpable clamp, which can be conveniently and firmly grounded; a black wire extends outward from the crimpable clamp The other end of the black cable is divided into two sets of insulated leads through copper terminals, each set of insulated leads includes red, green and yellow cables, and a terminal clip is fixed on the free end of each insulated lead. The utility model has the advantages of simple structure, convenient use and safe operation, can accurately and directly check whether the circuit of the switch cabinet is electrified, and introduces all the induced electricity in the cross-interconnection box into the earth, so as to prevent the occurrence of induced electricity in the cross-interconnection box Possibly, the personal safety of maintenance personnel is protected.
Description
Technical field
The utility model relates to the ground lead technical field of using in a kind of electric power system, specifically a kind of cross interconnected case maintenance Special grounding lead-in wire.
Background technology
Cross interconnected case is the vitals in the power transmission cable line-to-ground system; be applicable to the cross interconnected transposition protective earthing of high pressure single-core crosslinked cable joint, terminal; being used for limiting sheath and insulating joint insulation both sides impulse overvoltage raises; the induced voltage of control metallic sheath; reduce or eliminate the ring current on the sheath; improve the transmission capacity of cable, prevent that protective coverings of cable from puncturing, and guarantees the safe operation of cable.Therefore, cross interconnected system test is the big event in power transmission cable commissioning test and the routine test.Yet, because the finiteness in power transmission cable corridor in the same cable passage, has often been settled the multi-channel power transmission cable line.When maintenance wherein during a cable line, although this cable line has a power failure, but owing to affected by the induction of other operation high-tension cables in the same cable passage, voltage on this maintenance cable line oversheath is usually greater than 36V, especially when the connection metal copper bar of the cross interconnected case of dismounting, the maintainer often runs into by electricity to phenomenon.
The utility model content
The purpose of this utility model is to provide a kind of cross interconnected case maintenance Special grounding lead-in wire, and it is simple in structure, and is easy to operate, is connected firmly, safe and reliable, has solved the safety problem that the cross interconnected case of Overhaul site exists.
The technical scheme in the invention for solving the technical problem is: the cross interconnected case maintenance of this kind Special grounding lead-in wire, and it comprises earth terminal, cable and connection clamp, it is characterized in that, but described earth terminal is a jointing clamp, can make things convenient for dead earthing; But extend outward a black cable at described jointing clamp, the black cable other end is told two groups of insulator pins by copper tip, each group insulator pin comprises red, green, yellow three kinds of cables, and fixes respectively a connection clamp at the free end of each insulator pin.
The beneficial effects of the utility model are: the utility model is simple in structure; easy to use; handling safety; whether Direct Test to go out the switch cubicle circuit charged accurately; and with whole the importing in the earth of the induced electricity in the cross interconnected case; stop to exist in the cross interconnected case faradic possibility, protected maintainer's personal safety.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of cross interconnected case;
Fig. 3 is use state diagram of the present utility model;
Among the figure: but 1 jointing clamp, 2 copper tips, 3 black cables, 4 insulator pins, 6 connection clamps, 71 crust connecting portions, 72 impacted bolt heads, 73 metal copper bars.
Embodiment
Such as Fig. 1～shown in Figure 3, the cross interconnected case maintenance of this kind Special grounding lead-in wire, it comprises earth terminal and terminals.But earth terminal is a jointing clamp 1, can make things convenient for dead earthing; But extend outward a black cable 3 at jointing clamp 1, this black cable is the annealed copper wire of 10 square millimeters of specifications.The other end at black cable 3 is told two groups of insulator pins 4 by copper tip 2, and each group insulator pin comprises red, green, yellow three kinds of cables, and fixes respectively a connection clamp 6 at the free end of each insulator pin, forms terminals.For ease of arrangement, six roots of sensation insulator pin middle part is pooled to one, and insulator pin is the annealed copper wire of 6 square millimeters of specifications, is pencil.The other end of all insulator pins 4 is fixed respectively a connection clamp 6, connection clamp comprises three large wire clamps of metal and three little wire clamps of metal, large wire clamp is wherein clamped the crust of cross interconnected case standard coaxial cable, little wire clamp is clamped on the impacted bolt head of cross interconnected case standard coaxial cable inner core, simultaneously by lead-in wire ground connection, prevent that protective coverings of cable from puncturing, so just can the safe metal copper bar be dismantled.
Such as Fig. 2, shown in Figure 3, during test, large wire clamp is clamped the crust connecting portion 71 of cross interconnected case standard coaxial cable, and little wire clamp is clamped on the impacted bolt head 72 of cross interconnected case standard coaxial cable inner core, but the jointing clamp dead earthing.So neither impact dismounting connection metal copper bar 73, also can eliminate other operation high-tension cables induced voltage on the maintenance cable jacket, on the basis that does not increase the test repair time, guaranteed maintainer's personal safety, and is simple and convenient, safe and reliable.
Except the described technical characterictic of specification, be the known technology of those skilled in the art.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220439479 CN202749745U (en) | 2012-08-30 | 2012-08-30 | Special-purpose grounding lead wire for intersecting interconnection box maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220439479 CN202749745U (en) | 2012-08-30 | 2012-08-30 | Special-purpose grounding lead wire for intersecting interconnection box maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202749745U true CN202749745U (en) | 2013-02-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220439479 Expired - Fee Related CN202749745U (en) | 2012-08-30 | 2012-08-30 | Special-purpose grounding lead wire for intersecting interconnection box maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202749745U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280681A (en) * | 2013-03-22 | 2013-09-04 | 国家电网公司 | Universal combined short-circuit device for heavy current tests |
| CN103337760A (en) * | 2013-07-03 | 2013-10-02 | 国家电网公司 | Secondary short circuiting line for CT and PT |
| CN103579949A (en) * | 2013-11-11 | 2014-02-12 | 国家电网公司 | Method for maintaining high-voltage transformer substation distribution box cable shielded wire |
| CN103698653A (en) * | 2013-12-30 | 2014-04-02 | 国家电网公司 | System and method for detecting earth fault of sheath of single-core power cable on basis of circulation measurement |
| CN104020323A (en) * | 2014-06-17 | 2014-09-03 | 国家电网公司 | High-voltage power cable tension clamp |
| CN108365593A (en) * | 2018-04-24 | 2018-08-03 | 广东电网有限责任公司 | A high-voltage cable cross-connection system anti-misconnection cross-connection box |
| CN112018672A (en) * | 2020-09-16 | 2020-12-01 | 国网江西省电力有限公司南昌供电分公司 | Electrified repair method for cross-connection grounding system of power transmission cable |
| CN113937682A (en) * | 2021-11-08 | 2022-01-14 | 国网山东省电力公司临沂供电公司 | Transposition error live-line defect eliminating tool for cross interconnection box |
-
2012
- 2012-08-30 CN CN 201220439479 patent/CN202749745U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280681A (en) * | 2013-03-22 | 2013-09-04 | 国家电网公司 | Universal combined short-circuit device for heavy current tests |
| CN103280681B (en) * | 2013-03-22 | 2016-03-23 | 国家电网公司 | A kind of cranking test general-purpose combination short-circuit device |
| CN103337760A (en) * | 2013-07-03 | 2013-10-02 | 国家电网公司 | Secondary short circuiting line for CT and PT |
| CN103579949A (en) * | 2013-11-11 | 2014-02-12 | 国家电网公司 | Method for maintaining high-voltage transformer substation distribution box cable shielded wire |
| CN103698653A (en) * | 2013-12-30 | 2014-04-02 | 国家电网公司 | System and method for detecting earth fault of sheath of single-core power cable on basis of circulation measurement |
| CN103698653B (en) * | 2013-12-30 | 2016-05-04 | 国家电网公司 | Single-core power cables sheath ground-fault detection system and the method measured based on circulation |
| CN104020323A (en) * | 2014-06-17 | 2014-09-03 | 国家电网公司 | High-voltage power cable tension clamp |
| CN108365593A (en) * | 2018-04-24 | 2018-08-03 | 广东电网有限责任公司 | A high-voltage cable cross-connection system anti-misconnection cross-connection box |
| CN112018672A (en) * | 2020-09-16 | 2020-12-01 | 国网江西省电力有限公司南昌供电分公司 | Electrified repair method for cross-connection grounding system of power transmission cable |
| CN113937682A (en) * | 2021-11-08 | 2022-01-14 | 国网山东省电力公司临沂供电公司 | Transposition error live-line defect eliminating tool for cross interconnection box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: JINAN POWER SUPPLY COMPANY OF SHANDONG ELECTRIC POWER CORPORATION Effective date: 20130801 Owner name: JINAN POWER SUPPLY COMPANY OF SHANDONG ELECTRIC PO Effective date: 20130801 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 250012 JINAN, SHANDONG PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130801 Address after: 100031 Xicheng District, Chang'an Avenue, No. 86, Patentee after: State Grid Corporation of China Patentee after: Jinan Power Supply Co., Ltd. of Shandong Electric Power Corporation Address before: 250012 Shandong Province, Lixia District of Ji'nan City Luoyuan Street No. 238 Patentee before: Jinan Power Supply Co., Ltd. of Shandong Electric Power Corporation |
|
| 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: 20130220 Termination date: 20160830 |