CN204008741U - A kind of test wire - Google Patents
A kind of test wire Download PDFInfo
- Publication number
- CN204008741U CN204008741U CN201420283197.XU CN201420283197U CN204008741U CN 204008741 U CN204008741 U CN 204008741U CN 201420283197 U CN201420283197 U CN 201420283197U CN 204008741 U CN204008741 U CN 204008741U
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- wire
- test wire
- screw
- test
- current transformer
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Abstract
The utility model relates to power technology field, relates in particular to a kind of for preventing the test wire of Current Transformer Secondary open circuit.This test wire comprises wire, and the end of described wire is connected with the secondary circuit of current transformer by joint; Described joint comprises screw body and fittings body, and one end of described fittings body is connected with screw body, and the other end of fittings body is connected in the end of described wire, and the threaded one end of described screw body is connected in the jack of described secondary loop of mutual inductor terminal; This test wire can be realized with the terminal of secondary loop of mutual inductor and being reliably connected, by the fastening effect of joint, fundamentally solved operation power equipment at the trial test wire hold a caducous difficult problem, effectively prevented that operation power equipment from burning the situation of power equipment and harm personal safety because of the open a way electric discharge that causes of current transformer.
Description
Technical field
The utility model relates to power technology field, relates in particular to a kind of for preventing the test wire of Current Transformer Secondary open circuit.
Background technology
Current transformer is a kind of important power equipment, in electric system, is widely used.The electromagnetic principle of current transformer has determined that its secondary side forbids open running, once open a way, will on the secondary circuit that originally only has millivolt level working voltage, produce the high pressure of the even tens thousand of volts of thousands of volts, not only have a strong impact on the normal operation of secondary circuit, also can cause open circuit point electric discharge initiation fire, burn electrical equipment, causing the accident has a power failure etc.; Even secondary high-pressure directly jeopardizes personal safety.And the work such as power equipment starting characteristics test or operational outfit parameter testing must be carried out under the operating mode of power equipment operation.Therefore,, as the current transformer of measuring power equipment most important parameters, in the time of starting characteristics test or operational outfit parameter testing, its secondary operating loop must be connected with test apparatus by test wire.
At present, connect for convenience and prevent open circuit, prior art is by special current transformer terminal and test wire, and current transformer terminal both sides are furnished with jack, and there is removable sheet centre.There is plug at test wire two.When experiment, one of test wire is inserted in current transformer terminal jack, test wire other end is inserted in the current transformer terminal jack of test instrument, and the removable sheet in the middle of turn-off current terminal, is just concatenated into test instrument secondary loop of mutual inductor and has suffered.This connection is because complete by plug-socket mode.In the time that nigration instrument or personnel touch test wire by mistake, easily cause test wire plug to pull out from current transformer terminal jack, cause current mutual induction secondary side open circuit.Very easily cause open circuit point electric discharge to burn electrical equipment or jeopardize personal safety.
Therefore, for above deficiency, need one to be reliably connected with secondary loop of mutual inductor terminal, while effectively preventing operational outfit test, burn the test wire of electrical equipment and harm personal safety because current transformer open circuit causes electric discharge.
Utility model content
(1) technical matters that will solve
The technical problems to be solved in the utility model has been to provide a kind of test wire, make it possible to reliably be connected with secondary loop of mutual inductor terminal, solved operation power equipment at the trial test wire hold a caducous difficult problem, effectively prevented that operation power equipment from burning the situation of power equipment and harm personal safety because of the open a way electric discharge that causes of current transformer.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of test wire to comprise wire, and the end of described wire is connected with the secondary circuit of current transformer by joint; Described joint comprises screw body and fittings body, and one end of described fittings body is connected with screw body, and the other end of fittings body is connected in the end of described wire, and the threaded one end of described screw body is connected in the jack of described secondary loop of mutual inductor terminal.
Wherein, described screw body comprises screw cap, lead screw and threaded rod, described screw cap is connected with threaded rod by lead screw, and described lead screw is connected with one end of described fittings body, and described threaded rod is for being threadedly connected in the jack of described secondary loop of mutual inductor terminal.
Wherein, described fittings body comprises crimping nose and adapter ring body, and one end of described crimping nose is connected with adapter ring body, and the other end is crimped on the end of wire, and described adapter ring body is set in lead screw.
Wherein, described crimping nose is provided with the jack for crimping lead wire.
Wherein, described lead screw is provided with the shaggy tooth for preventing that adapter ring body from coming off, and described adapter ring body is positioned between described shaggy tooth and screw cap.
Wherein, the upper surface of described screw cap is provided with groove.
Wherein, described wire comprises core and be set in the crust on core, and the two ends of described crust are coated on respectively on described crimping nose.
Wherein, the material of described crust is soft insulating material.
Wherein, the material of described core is soft conductive material.
(3) beneficial effect
Technique scheme of the present utility model has following beneficial effect: the utility model test wire is connected with the secondary circuit of current transformer by joint in the end of wire; Joint comprises screw body and fittings body, and one end of fittings body is connected with screw body, and the other end of fittings body is connected in the end of wire, and the threaded one end of screw body is connected in the jack of secondary loop of mutual inductor terminal.This test wire can be realized with the terminal of secondary loop of mutual inductor and being reliably connected, by the fastening effect of joint, fundamentally solved operation power equipment at the trial test wire hold a caducous difficult problem, effectively prevented that operation power equipment from burning the situation of power equipment and harm personal safety because of the open a way electric discharge that causes of current transformer.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment test wire;
Fig. 2 is the structural representation of the utility model embodiment joint.
Wherein, 1: joint; 2: wire; ; 5: screw body; 6: fittings body; 21: core; 22: crust; 51: screw cap; 52: lead screw; 53: threaded rod; 61: crimping nose; 62: adapter ring body.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but can not be used for limiting scope of the present utility model.
In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more; Term " on ", orientation or the position relationship of the instruction such as D score, " left side ", " right side ", " interior ", " outward ", " front end ", " rear end ", " head ", " afterbody " be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, construct and operation with specific orientation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. are only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " is connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connects integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary.For the ordinary skill in the art, can concrete condition understand the concrete meaning of above-mentioned term in the utility model.
As shown in Figure 1, the test wire described in the present embodiment comprises wire 2, and the end of wire 2 is connected with the secondary circuit of current transformer by joint 1; Described joint 1 comprises screw body 5 and fittings body 6, and one end of fittings body 6 is connected with screw body 5, and the other end of fittings body 6 is connected in the end of wire 2, and the threaded one end of screw body 5 is connected in the jack of secondary loop of mutual inductor terminal.
This test wire is realized secondary loop of mutual inductor terminal is reliably connected by joint 1, and secondary circuit is connected with test apparatus.Fundamentally solved operation power equipment at the trial test wire hold a caducous difficult problem, effectively prevented that operation power equipment from burning the situation of power equipment and harm personal safety because of the open a way electric discharge that causes of current transformer.
As shown in Figure 2, screw body 5 comprises screw cap 51, lead screw 52 and threaded rod 53, screw cap 51 is connected with threaded rod 53 by lead screw 52, and lead screw 52 is connected with fittings body 6, and threaded rod 53 is for being threadedly connected in the jack of secondary loop of mutual inductor terminal.The lower end of threaded rod 53 is provided with external thread, in the jack of secondary loop of mutual inductor terminal, is provided with threaded hole, and external thread setting corresponding to threaded hole realizes reliably and connecting.
Wherein, fittings body 6 comprises crimping nose 61 and adapter ring body 62, and one end of crimping nose 61 is connected with adapter ring body 62, and the other end of crimping nose 61 is crimped on the end of wire 2, and adapter ring body 62 is provided with through hole, and adapter ring body 62 is set in the middle part of lead screw 52.
Crimping nose 61 is provided with the jack for crimping lead wire 2, and the end of wire 2 is crimped in crimping nose 61 by jack, thereby realizes the conducting between wire 2 and crimping nose 61, adapter ring body 62, lead screw 52.
Preferably, lead screw 52 is provided with the shaggy tooth for preventing that adapter ring body 62 from coming off, shaggy tooth is positioned on the bar footpath of lead screw 52, and the cylindrical external diameter that shaggy tooth surrounds is greater than the aperture of adapter ring body 62, adapter ring body 62 is between shaggy tooth and screw cap 51, and adapter ring body 62 can not come off in lead screw 52.The downside of adapter ring body 62 connects and realizes conduction at the fastening rear summation current transformer loop terminals jack upper surface of screw body 5.
In addition, on the upper surface of screw cap 51, be provided with groove, screw cap 51 groove is above for the fastening of screwdriver or dismounting, in addition, screw cap 51 below and adapter ring body 62 upper surfaces can also play electric action after fastening.
Preferably, wire 2 comprises core 21 and is set in the crust 22 on core 21, and the two ends of crust 22 are coated on respectively on crimping nose 61.
Core 21 is preferably soft conductive material and makes, and can carry out buckling work.
Crust 22 is preferably soft insulating material and makes, and can not affect insulation protection function with 21 bendings of flexible cord core, and the two ends of crust 22 is coated on respectively on crimping nose 61, prevent leaky.
In sum, the utility model test wire is connected with the secondary circuit of current transformer by joint in the end of wire; Joint comprises screw body and fittings body, and one end of fittings body is connected with screw body, and the other end of fittings body is connected in the end of wire, and the threaded one end of screw body is connected in the jack of secondary loop of mutual inductor terminal.This test wire can be realized with the terminal of secondary loop of mutual inductor and being reliably connected, by the fastening effect of joint, fundamentally solved operation power equipment at the trial test wire hold a caducous difficult problem, effectively prevented that operation power equipment from burning the situation of power equipment and harm personal safety because of the open a way electric discharge that causes of current transformer.
Embodiment of the present utility model provides for example with for the purpose of describing, and is not exhaustively or by the utility model to be limited to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present utility model and practical application, thereby and makes those of ordinary skill in the art can understand the utility model design to be suitable for the various embodiment with various amendments of special-purpose.
Claims (9)
1. a test wire, is characterized in that, comprises wire (2), and the end of described wire (2) is connected with the secondary circuit of current transformer by joint (1); Described joint (1) comprises screw body (5) and fittings body (6), one end of described fittings body (6) is connected with screw body (5), the other end of fittings body (6) is connected in the end of described wire (2), and the threaded one end of described screw body (5) is connected in the jack of described secondary loop of mutual inductor terminal.
2. test wire according to claim 1, it is characterized in that, described screw body (5) comprises screw cap (51), lead screw (52) and threaded rod (53), described screw cap (51) is connected with threaded rod (53) by lead screw (52), described lead screw (52) is connected with one end of described fittings body (6), and described threaded rod (53) is threadedly connected in the jack of described secondary loop of mutual inductor terminal.
3. test wire according to claim 2, it is characterized in that, described fittings body (6) comprises crimping nose (61) and adapter ring body (62), one end of described crimping nose (61) is connected with adapter ring body (62), the other end is crimped on the end of wire (2), and described adapter ring body (62) is set in lead screw (52).
4. test wire according to claim 3, is characterized in that, described crimping nose (61) is provided with the jack for crimping lead wire (2).
5. test wire according to claim 4, it is characterized in that, described lead screw (52) is provided with the shaggy tooth for preventing that adapter ring body (62) from coming off, and described adapter ring body (62) is positioned between described shaggy tooth and screw cap (51).
6. test wire according to claim 5, is characterized in that, the upper surface of described screw cap (51) is provided with groove.
7. test wire according to claim 3, it is characterized in that, described wire (2) comprises core (21) and is set in the crust (22) on core (21), and the two ends of described crust (22) are coated on respectively on described crimping nose (61).
8. test wire according to claim 7, is characterized in that, the material of described crust (22) is soft insulating material.
9. test wire according to claim 7, is characterized in that, the material of described core (21) is soft conductive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420283197.XU CN204008741U (en) | 2014-05-29 | 2014-05-29 | A kind of test wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420283197.XU CN204008741U (en) | 2014-05-29 | 2014-05-29 | A kind of test wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204008741U true CN204008741U (en) | 2014-12-10 |
Family
ID=52048720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420283197.XU Expired - Fee Related CN204008741U (en) | 2014-05-29 | 2014-05-29 | A kind of test wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204008741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144709A (en) * | 2017-06-12 | 2017-09-08 | 广东电网有限责任公司揭阳供电局 | Novel test terminal with misoperation prevention locking function and special plug-in |
-
2014
- 2014-05-29 CN CN201420283197.XU patent/CN204008741U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144709A (en) * | 2017-06-12 | 2017-09-08 | 广东电网有限责任公司揭阳供电局 | Novel test terminal with misoperation prevention locking function and special plug-in |
| CN107144709B (en) * | 2017-06-12 | 2023-03-14 | 广东电网有限责任公司揭阳供电局 | Test terminal with misoperation prevention locking function and special plug-in |
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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: 20141210 Termination date: 20180529 |