CN203760308U - Current transformer - Google Patents
Current transformer Download PDFInfo
- Publication number
- CN203760308U CN203760308U CN201420049073.5U CN201420049073U CN203760308U CN 203760308 U CN203760308 U CN 203760308U CN 201420049073 U CN201420049073 U CN 201420049073U CN 203760308 U CN203760308 U CN 203760308U
- Authority
- CN
- China
- Prior art keywords
- outlet terminal
- current transformer
- winding
- primary
- housing
- 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
Links
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Abstract
The utility model provides a current transformer which comprises a casing and a base arranged at the bottom of the casing. A primary wiring cover is arranged at the upper portion of the casing, a secondary wiring cover is arranged on the base, a primary winding and a second winding are arranged in the casing, the primary wiring cover is connected with a primary outlet terminal, the secondary wiring cover is connected with a secondary outlet terminal, the primary outlet terminal and the secondary wiring cover are arranged in the casing, the other end of the primary outlet terminal is connected with an insert, the primary outlet terminal is connected with the primary winding, and the secondary wiring cover is connected with the second winding. When the current transformer is used, an electrified display device can be manufactured according to the requirement of a user. In addition, the current transformer has the advantages of small in size, small in occupied area, convenient to install and maintain, stable in working performance, high in production efficiency, capable of being used outdoor and the like.
Description
Technical field
The utility model relates to a kind of current transformer, relates in particular to a kind of high safety, current transformer that can outdoor use.
Background technology
In the time that electric power system primary equipment breaks down, in system, there will be 20 times of above electric currents of running current.In addition, owing to there being inductance in circuit, short circuit current can not increase suddenly.So incipient moment (when t=0) also there will be one with the direct current of periodic component opposite current and decay, i.e. aperiodic component, superimposed with short circuit current.When voltage initial angle
While being 0 ° or 180 °, the maximum instantaneous value of short circuit current half cycle after short circuit occurs.And traditional instrument transformer electric current be raised to rated value 20 after, magnetic flux unshakable in one's determination has approached zone of saturation, thereby causes output waveform distortion, the aperiodic component of the secondary progress of disease is decayed in advance, after failure removal, secondary output is with a series of phenomenons such as hangovers.In recent years, along with the upgrading of system, also required instrument transformer can accurately measure 30 times or even the short circuit current of 40 times of running current, and can accurately reflect truly the waveform of aperiodic component.This is to be difficult to realize, especially in the time that system occurs that short trouble, instrument transformer primary current are raised to 20 times of-60 times of rated current, existing current transformer is the DC component of progress of disease 20-160ms accurately, there is no good transient process response, can not truly reflect the attenuation state of aperiodic component, output waveform easily after saturated and distortion and failure removal primary current be that 1 o'clock secondary waveform has conditions of streaking, damping time constant error, peak error are large.
Current transformer can do the use of relaying protection or electric energy measurement in electric power system.Now the most of instrument transformer sizes on market are larger, the many and unstable properties of floor space, and production efficiency is low.
Utility model content
The utility model is in order to address the above problem, provide a kind of safe, size is little, the instrument transformer of lightweight, stable performance.Concrete, a kind of totally-enclosed cast of epoxy resin, current transformer of column support type structure of adopting is provided.
Concrete, the utility model provides a kind of current transformer, it comprises: housing and be arranged on the base of described housing bottom, described housing top is provided with primary connection cover, on described base, be provided with secondary connection cover, described enclosure interior is provided with winding and secondary winding, described primary connection cover is connected with outlet terminal one time, described secondary connection cover is connected with secondary outlet terminal, a described outlet terminal and described secondary outlet terminal are all arranged on described enclosure interior, the other end of a described outlet terminal is connected with inserts, a described outlet terminal connects a described winding, described secondary outlet terminal connects described secondary winding.
The nameplate of mark model preferably, is set on described housing.
Preferably, described housing is set to rectangle housing, on described housing, is provided with for fixing screw.
Preferably, on described base, be provided with earth stud.
Preferably, the number of turn of a described winding is that 10 circles are to 2000 circles.
Preferably, the number of turn of described secondary winding is that 20 circles are to 20000 circles.
The utility model also can require do charged display device according to user in the time of practicality, and it is little to the utlity model has volume, and floor space is few, easy for installation and be convenient to safeguard, stable work in work, and production efficiency is high and can be used for the advantages such as outdoor.
Brief description of the drawings
Fig. 1 is Facad structure schematic diagram of the present utility model;
Fig. 2 is profile of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further explained, as shown in Figures 1 and 2: the utility model provides a kind of current transformer, it comprises: housing 1 and be arranged on the base 2 of housing 1 bottom, housing 1 top is provided with primary connection cover 3, on base 2, be provided with secondary connection cover 6, housing 1 inside is provided with winding 4 and secondary winding 5, primary connection cover 3 is connected with outlet terminal 7 one time, secondary connection cover 6 is connected with secondary outlet terminal 8, outlet terminal 7 and secondary outlet terminal 8 are all arranged on housing 1 inside, the other end of an outlet terminal 7 is connected with inserts 9, one time outlet terminal 7 connects winding 4 one time, secondary outlet terminal 8 connecting secondary windings 5.
The nameplate 10 of mark model is set on housing 1.Can know the parameter of observing intuitively current transformer.
Preferably, housing 1 is set to overall rectangle, is convenient to safeguard and install, and on housing 1, is provided with for fixing screw 11.
Preferably, on base 2, be provided with earth stud.The bottom of base 2 is provided with floor 20.
Preferably, the number of turn of a winding 4 is that 5 circles are to 2000 circles.
Preferably, the number of turn of secondary winding 5 is that 10 circles are to 10000 circles.In the time of concrete use, it is all generally the number of turn that the number of turn of getting secondary winding 5 is greater than a winding 4.
The utility model also can require do charged display device according to user in the time of practicality, and it is little to the utlity model has volume, and floor space is few, easy for installation and be convenient to safeguard, stable work in work, and production efficiency is high and can be used for the advantages such as indoor.
Person of ordinary skill in the field is to be understood that: in the situation that not departing from general principle of the present utility model; can carry out various amendments, retouching, combination to the utility model, supplement or the replacement of technical characterictic, these are equal to substitute mode or within obviously mode of texturing all falls into protection range of the present utility model.
Claims (6)
1. a current transformer, it comprises: housing and be arranged on the base of described housing bottom, it is characterized in that: described housing top is provided with primary connection cover, on described base, be provided with secondary connection cover, described enclosure interior is provided with winding and secondary winding, described primary connection cover is connected with outlet terminal one time, described secondary connection cover is connected with secondary outlet terminal, a described outlet terminal and described secondary outlet terminal are all arranged on described enclosure interior, the other end of a described outlet terminal is connected with inserts, a described outlet terminal connects a described winding, described secondary outlet terminal connects described secondary winding.
2. current transformer according to claim 1, is characterized in that: the nameplate that mark model is set on described housing.
3. current transformer according to claim 1, is characterized in that: described housing is set to rectangle housing, on described housing, is provided with for fixing screw.
4. current transformer according to claim 3, is characterized in that: on described base, be provided with earth stud.
5. current transformer according to claim 1, is characterized in that: the number of turn of a described winding is that 10 circles are to 2000 circles.
6. current transformer according to claim 5, is characterized in that: the number of turn of described secondary winding is that 20 circles are to 20000 circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420049073.5U CN203760308U (en) | 2014-01-24 | 2014-01-24 | Current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420049073.5U CN203760308U (en) | 2014-01-24 | 2014-01-24 | Current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203760308U true CN203760308U (en) | 2014-08-06 |
Family
ID=51255553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420049073.5U Expired - Fee Related CN203760308U (en) | 2014-01-24 | 2014-01-24 | Current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203760308U (en) |
-
2014
- 2014-01-24 CN CN201420049073.5U patent/CN203760308U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208921730U (en) | A kind of portable wind direction and wind velocity measuring instrument | |
| CN204068199U (en) | A kind of under-voltage surge current protection circuit | |
| CN203760308U (en) | Current transformer | |
| CN202502205U (en) | Variable frequency series resonance withstand voltage test apparatus | |
| CN203760304U (en) | Voltage transformer | |
| CN201497781U (en) | Resistance type power adapter aging device | |
| CN205746569U (en) | Wind energy warning lamp is used in a kind of construction | |
| CN201887398U (en) | High-voltage wall feed-through sleeve | |
| CN204556725U (en) | The miniature power consumption pick-up unit of electrical equipment | |
| CN204242020U (en) | A kind of magnetic saturation voltage-stabilizing voltage regulator | |
| CN203760306U (en) | Voltage transformer | |
| CN204012950U (en) | A kind of power supply device of wire power taking | |
| CN201904617U (en) | Intelligent SPD with timing function | |
| CN203552558U (en) | Electronic-type standard cell | |
| CN203932682U (en) | A kind of low-tension switch cabinet based on three dimensional design | |
| CN203069683U (en) | Online transformer transformation ratio testing device | |
| CN104347242A (en) | Transformer | |
| CN202816636U (en) | Novel casing pipe mutual inductor | |
| CN203760305U (en) | Voltage transformer | |
| CN204350469U (en) | Inner space adjustable type Comprehensive Control screen | |
| CN203166241U (en) | Safe wiring board with alarm function | |
| CN203118751U (en) | Current transformer | |
| CN204441081U (en) | A kind of condenser bushing formula current transformer | |
| CN204480876U (en) | A kind of protective current transformer, of powering carrying test coil | |
| CN203482104U (en) | Inverter |
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: 20140806 Termination date: 20150124 |
|
| EXPY | Termination of patent right or utility model |