CN204632561U - Current transformer - Google Patents
Current transformer Download PDFInfo
- Publication number
- CN204632561U CN204632561U CN201520236928.XU CN201520236928U CN204632561U CN 204632561 U CN204632561 U CN 204632561U CN 201520236928 U CN201520236928 U CN 201520236928U CN 204632561 U CN204632561 U CN 204632561U
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- CN
- China
- Prior art keywords
- pour mass
- central
- hole
- current transformer
- cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to current transformer technical field, especially a current transformer, comprise base and be arranged on the pour mass on base, pour mass has central through hole, be provided with the iron core with its form fit in pour mass, iron core is evenly wound with secondary winding, the centre that pour mass is positioned at central through hole is provided with tool constraint circle springy, also comprise some support bars, one end of support bar is fixedly connected with the central through hole inwall of described pour mass, the other end is fixedly connected with the described outside enclosed that fetters, described support bar is all gathering trend towards the center of described central through hole, Stranded cable is fixed on center by middle constraint circle by current transformer of the present utility model, what prevent cable pulls the friction caused with instrument transformer, cause the danger of hazardous electrical discharges that cable insulation breaks, the utility model structure is simple, cost is low, effectively stop the potential danger because the frequent friction of cable and instrument transformer causes, and precision is high.
Description
Technical field
The utility model relates to current transformer technical field, especially a kind of zero sequence current mutual inductor.
Background technology
Zero sequence current mutual inductor is the article that power industry uses, its operation principle is based on Kirchhoff's current law (KCL), zero sequence current mutual inductor is straight-through current transformer, be generally used for electrical protection apparatus as Small Electric Current Earthing And Routing Device, microcomputer harmonic elimination devices etc. support the use, when there is electric shock or leak current fault in circuit, instrument transformer secondary side exports zero-sequence current, make the equipment protection start on connect secondary line, if tested cable is distinguishing at instrument transformer center and Bu center, if will accurately measure, or tested cable should be placed in instrument transformer center, the reason of impact is exactly can leakage field, traditional instrument transformer, directly cable is passed instrument transformer, cable is easily pullled, frequent meeting and instrument transformer friction, certain damage is had to cable and instrument transformer, if often rub or cause the insulating protective layer of cable damaged, have danger of hazardous electrical discharges.
Utility model content
The technical problems to be solved in the utility model is: in order to solve traditional cable directly through instrument transformer, cable is not fixed, the problem causing insulating barrier to break having danger of hazardous electrical discharges easily pullled by cable, now provides a kind of current transformer that Stranded cable can be fixed on center.
The utility model solves the technical scheme that its technical problem adopts: a kind of current transformer, comprise base and be arranged on the pour mass on base, described pour mass has central through hole, be provided with the iron core with its form fit in described pour mass, described iron core is evenly wound with secondary winding;
The centre that described pour mass is positioned at central through hole is provided with tool constraint circle springy;
Also comprise some support bars, one end of described support bar is fixedly connected with the central through hole inwall of described pour mass, the other end is fixedly connected with the described outside enclosed that fetters, described support bar is all gathering trend towards the center of described central through hole, when cable is through constraint circle, cable can be strapped in the central through hole of instrument transformer by constraint circle, makes it be in the centre of instrument transformer all the time.
Further, described support bar and described pour mass are formed in one, and support bar and pour mass one are poured into a mould can be effectively cost-saving.
Preferably, described support bar has three, and is uniformly distributed, and the cable enclosing constraint and pass better supports, and provides enough support forces.
Preferably, described constraint circle is elastomeric material, and the elastic force of elastomeric material is good, good insulating and be not easy to damage.
The beneficial effects of the utility model are: Stranded cable is fixed on center by middle constraint circle by current transformer of the present utility model, what prevent cable pulls the friction caused with instrument transformer, cause the danger of hazardous electrical discharges that cable insulation breaks, the utility model structure is simple, cost is low, effectively stopped the potential danger because the frequent friction of cable and instrument transformer causes, and precision is high.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is constraint circle anchor ear cable schematic diagram;
In figure: 1, pour mass, 2, central through hole, 3, support bar, 4, base, 5, constraint circle, 6, cable.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
Embodiment 1
As shown in Figure 1, a kind of current transformer, the pour mass 1 comprising base 4 and be arranged on base 4, described pour mass 1 has central through hole 2, is provided with the iron core with its form fit in described pour mass 1, and described iron core is evenly wound with secondary winding;
The centre that described pour mass 1 is positioned at central through hole 2 is provided with tool constraint circle 5 springy, and described constraint circle 5 is elastomeric material;
Also comprise three support bars 3, one end of described support bar 3 is fixedly connected with central through hole 2 inwall of described pour mass 1, the other end is fixedly connected with the outside of described constraint circle 5 (together with being sticky in by glue between support bar 3 with constraint circle 5), described support bar 3 is all gathering trend towards the center of described central through hole 2, three support bars 3 are evenly distributed on the central through hole 2 of pour mass 1, and described support bar 3 is formed in one with described pour mass 1.
Operation principle:
When cable 6 is through constraint circle 5, constraint circle 5 can by cable 6 anchor ear tightly together, make it be positioned at the centre of instrument transformer all the time, makes cable 6 relatively more orderly, can not be pullled, and improve the accuracy of instrument transformer.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to right.
Claims (4)
1. a current transformer, comprise base (4) and be arranged on the pour mass (1) on base (4), it is characterized in that: described pour mass (1) has central through hole (2), be provided with the iron core with its form fit in described pour mass (1), described iron core is evenly wound with secondary winding;
The centre that described pour mass (1) is positioned at central through hole (2) is provided with tool constraint circle (5) springy;
Also comprise some support bars (3), one end of described support bar (3) is fixedly connected with central through hole (2) inwall of described pour mass (1), the other end is fixedly connected with the described outside enclosing (5) that fetters, and described support bar (3) is all gathering trend towards the center of described central through hole (2).
2. current transformer according to claim 1, is characterized in that: described support bar (3) and described pour mass (1) are formed in one.
3. current transformer according to claim 1 and 2, is characterized in that: described support bar (3) has three, and is uniformly distributed.
4. current transformer according to claim 3, is characterized in that: described constraint circle (5) is elastomeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520236928.XU CN204632561U (en) | 2015-04-17 | 2015-04-17 | Current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520236928.XU CN204632561U (en) | 2015-04-17 | 2015-04-17 | Current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204632561U true CN204632561U (en) | 2015-09-09 |
Family
ID=54051563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520236928.XU Expired - Fee Related CN204632561U (en) | 2015-04-17 | 2015-04-17 | Current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204632561U (en) |
-
2015
- 2015-04-17 CN CN201520236928.XU patent/CN204632561U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20150909 Termination date: 20210417 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |