CN201508768U - Wall-penetrating type current transformer - Google Patents
Wall-penetrating type current transformer Download PDFInfo
- Publication number
- CN201508768U CN201508768U CN2009202225822U CN200920222582U CN201508768U CN 201508768 U CN201508768 U CN 201508768U CN 2009202225822 U CN2009202225822 U CN 2009202225822U CN 200920222582 U CN200920222582 U CN 200920222582U CN 201508768 U CN201508768 U CN 201508768U
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- primary winding
- secondary coil
- current transformer
- coil
- wall
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Abstract
The utility model discloses a wall-penetrating type current transformer which belongs to high voltage electrical devices. The current transformer comprises a primary coil, a secondary coil, a wiring terminal, a wiring board, a power anti-steal protection cover and a pouring body, wherein the secondary coil is arranged on the primary coil in a surrounding manner and coupled with the primary coil; epoxy resin vacuum is poured outside the primary coil and the secondary coil to seal the secondary coil and the primary coil to form the pouring body; the wiring terminal of the primary coil is in electrical connection with the wiring board outside the pouring body; the wiring terminal of the secondary coil is in electrical connection with the wiring terminal; and the wiring terminal is arranged in the power anti-steal protection cover. The secondary coil and the primary coil are sealed in the pouring body, so that the secondary coil and the primary coil cannot be influenced by external environment changes, such as high temperature, high voltage, humidity, dirtiness and the like. The current transformer can be used in all weathers, is the current transformer capable of operating in various conditions, and has the advantages of simple structure, smaller volume, high flexibility, convenient installation and stable performance.
Description
Technical field
The utility model relates to a kind of High-Voltage Electrical Appliances device, particularly relates to a kind of wall-penetrating type current transformer that is used for current measurement and protection.
Background technology
Current transformer generally is used in the power network line, as the equipment of current measurement and protection.Existing current transformer generally is made of primary winding, secondary coil, terminal block, binding post and shell, secondary coil is wrapped in outside the primary winding, form mode with the primary winding coupling, secondary coil and binding post are electrically connected, primary winding and terminal block are electrically connected, and primary winding and secondary coil after the connection all are provided with in the enclosure.The current transformer of this structure exists closure poor, can't use in special environment such as high temperature, high pressure, humidity and filth, has the shortcoming that the life-span is short, failure rate is high if use in these environment.
The utility model content
Based on above-mentioned existing in prior technology problem, the utility model embodiment provides a kind of wall-penetrating type current transformer, its good leak tightness, and in various environment, high temperature resistant, high pressure, filth and moist are a kind of current transformers of round-the-clock full operating mode.
The utility model is achieved through the following technical solutions:
The utility model embodiment provides a kind of wall-penetrating type current transformer, comprising:
Primary winding, secondary coil, binding post, terminal block and anti-electricity-theft protective cover and pour mass;
Described secondary coil is coupled with described primary winding around being arranged on the primary winding, and epoxide resin vacuum is cast in primary winding and secondary coil outer closure secondary coil and primary winding and forms pour mass; The terminals of the primary winding terminal block outer with being arranged on pour mass is electrically connected; The terminals and the binding post of secondary coil are electrically connected; Described binding post is arranged in the anti-electricity-theft protective cover.
By above-mentioned embodiment of the present utility model as can be seen, in the utility model embodiment, form pour mass, thereby form the current transformer of totally-enclosed wall-penetrating type structure by epoxide resin vacuum being cast in secondary coil and primary winding outer closure secondary coil and primary winding.Because secondary coil and primary winding are enclosed in the pour mass, can not impact it because of external environment condition changes, as high temperature, high pressure, humidity and filth etc., can round-the-clockly use, be a kind of current transformer of full operating mode.What this current transformer was simple in structure, volume can be made is little, can be used on to do electric current, electric energy measurement and relaying protection in the power circuit of 50Hz, 10kV and use, and the parameter that possesses skills height, and flexibility is strong, and easy for installation, the advantage of stable performance.
Description of drawings
The structural representation of the current transformer that Fig. 1 provides for the utility model embodiment;
The current transformer that Fig. 2 provides for the utility model embodiment be electrically connected schematic diagram.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment
Present embodiment provides a kind of wall-penetrating type current transformer, can be used on to do electric current, electric energy measurement and relaying protection in the power circuit of 50Hz, 10kV and use, and as shown in Figure 1, this current transformer comprises:
Wherein, described secondary coil 1 is coupled with described primary winding 2 around being arranged on the primary winding 2, epoxide resin vacuum is cast in primary winding 2 and secondary coil 1 outside, sealing secondary coil 1 and primary winding 2 form pour mass, and this pour mass can become the whole enclosed shapes of primary winding and secondary coil the pour mass of full-closed structure; The terminals of primary winding 2 are electrically connected with the terminal block 4 that is arranged on pour mass 3 outer both sides; The terminals of secondary coil 1 and binding post 5 are electrically connected; Described binding post 5 outsides are provided with anti-electricity-theft protective cover.It is low that this current transformer has solved existing current mutual-inductor parameter, and the situation of stealing easily takes place.
Secondary coil in the above-mentioned current transformer and primary winding be of coupled connections schematic diagram as shown in Figure 2, wherein, primary winding L
1Primary winding is shape ringwise, secondary coil L
2Be looped around primary winding L
1Annular edge on, as primary winding L
1When being connected with power supply V, secondary coil L
2Middle meeting produces induced current, if at secondary coil L
2On be connected to measuring instrument A, can measure the size of electric current, voltage, thereby can realize the electric energy that flows through in the primary winding is measured.
In the above-mentioned current transformer, primary winding can be made as single turn or multiple circle, and secondary coil is made as single turn, has a set of joints, and the secondary line coil cooperates with primary winding and then forms the monotropic current transformer that compares; If secondary coil is made as multiple circle, have many set of joints, the secondary line coil cooperates formation polytropic ratio current transformer with primary winding.
In sum, current transformer among the utility model embodiment, by vacuum pouring epoxy resin outside secondary coil and primary winding, secondary coil and primary winding being enclosed in the pour mass of formation becomes full-closed structure, thereby makes during this current transformer uses, can not be subjected to the influence of external environment condition, applicable to multiple area, as the torrid zone, plateau etc., have high temperature resistant, resistant is dirty and the advantage of humidity, belong to full operating mode product, but all weather operations.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claims.
Claims (6)
1. a wall-penetrating type current transformer is characterized in that, comprising:
Primary winding, secondary coil, binding post, terminal block and anti-electricity-theft protective cover and pour mass;
Described secondary coil is coupled with described primary winding around being arranged on the primary winding, and epoxide resin vacuum is cast in primary winding and secondary coil outer closure secondary coil and primary winding and forms pour mass; The terminals of the primary winding terminal block outer with being arranged on pour mass is electrically connected; The terminals and the binding post of secondary coil are electrically connected; Described binding post is arranged in the anti-electricity-theft protective cover.
2. wall-penetrating type current transformer as claimed in claim 1, it is characterized in that described primary winding adopts single-turn circular coil or multiple circle coil, secondary coil adopts single-turn circular coil, have a set of joints, secondary coil cooperates the monotropic current transformer that compares of formation with primary winding.
3. wall-penetrating type current transformer as claimed in claim 1, it is characterized in that described primary winding adopts single-turn circular coil or multiple circle coil, secondary coil adopts multiple circle coil, have many set of joints, secondary coil cooperates formation polytropic ratio current transformer with primary winding.
4. wall-penetrating type current transformer as claimed in claim 1 is characterized in that described terminal block is arranged on the pour mass both sides.
5. wall-penetrating type current transformer as claimed in claim 1 is characterized in that, described secondary coil is looped around on the described primary winding to be coupled with primary winding and comprises: primary winding is shape ringwise, and secondary coil is looped around on the annular edge of primary winding.
6. wall-penetrating type current transformer as claimed in claim 1 is characterized in that, described pour mass becomes the whole enclosed shapes of primary winding and secondary coil the pour mass of full-closed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202225822U CN201508768U (en) | 2009-09-27 | 2009-09-27 | Wall-penetrating type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202225822U CN201508768U (en) | 2009-09-27 | 2009-09-27 | Wall-penetrating type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201508768U true CN201508768U (en) | 2010-06-16 |
Family
ID=42469893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202225822U Expired - Fee Related CN201508768U (en) | 2009-09-27 | 2009-09-27 | Wall-penetrating type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201508768U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516593A (en) * | 2017-10-13 | 2017-12-26 | 镇江市丹高电器有限公司 | A kind of small intelligent current transformer |
-
2009
- 2009-09-27 CN CN2009202225822U patent/CN201508768U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516593A (en) * | 2017-10-13 | 2017-12-26 | 镇江市丹高电器有限公司 | A kind of small intelligent current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20120927 |