CN204067020U - A kind of zero-sequence transformer - Google Patents
A kind of zero-sequence transformer Download PDFInfo
- Publication number
- CN204067020U CN204067020U CN201420404087.4U CN201420404087U CN204067020U CN 204067020 U CN204067020 U CN 204067020U CN 201420404087 U CN201420404087 U CN 201420404087U CN 204067020 U CN204067020 U CN 204067020U
- Authority
- CN
- China
- Prior art keywords
- iron core
- zero
- utility
- shell
- core body
- 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.)
- Active
Links
Landscapes
- Transformers For Measuring Instruments (AREA)
- Breakers (AREA)
Abstract
The utility model relates to a kind of zero-sequence transformer, comprises shell, core body and contact pin; Described core body comprises iron core and is wound on the enamelled wire on iron core; Described core body is installed in the enclosure, and the lower end of shell is provided with two contact pins, and the terminals of enamelled wire connect respectively at two contact pins; Described iron core comprises the lamination of permalloy material and the pulsatile tablets of silicon steel material; The lamination of described at least a slice becomes iron core with the pulsatile tablets composite stack of at least a slice.The utility model still can ensure the normal work of circuit breaker under overload current, substantially increases fail safe and sensitivity.
Description
Technical field
The utility model relates to a kind of instrument transformer, particularly a kind of zero-sequence transformer.
Background technology
Zero-sequence transformer and zero sequence current mutual inductor are the article that power industry uses.Zero sequence current mutual inductor is current transformer with single-turn cored structure, be generally used for electrical protection apparatus as: Small Electric Current Earthing And Routing Device, microcomputer harmonic elimination device etc. support the use.Its effect be in circuit when circuit occur to get an electric shock or leak current fault time, instrument transformer secondary side exports zero-sequence current, makes the equipment protection action on secondary line (cut off the electricity supply, warning etc.).
And in actual use, there is following problem: when zero-sequence transformer is under 5 times of rated current of electric leakage product, breaker actuation is understood time delay or is failure to actuate.That is existing zero-sequence transformer can not meet breaker actuation under overload current.
Utility model content
The purpose of this utility model is to provide a kind of zero-sequence transformer that still can ensure normal operation of circuit breaker under overload current.
The technical scheme realizing the utility model object is: the utility model comprises shell, core body and contact pin; Described core body comprises iron core and is wound on the enamelled wire on iron core; Described core body is installed in the enclosure, and the lower end of shell is provided with two contact pins, and the terminals of enamelled wire connect respectively at two contact pins; Described iron core comprises the lamination of permalloy material and the pulsatile tablets of silicon steel material; The lamination of described at least a slice becomes iron core with the pulsatile tablets composite stack of at least a slice.
Above-mentioned iron core comprises six laminations and a slice pulsatile tablets.
The both sides of above-mentioned pulsatile tablets are all stacking is provided with three laminations.
Casting glue is filled with between above-mentioned core body and shell.
The utility model has positive effect: the design of (1) the utility model is ingenious, by the compound design of iron core, solves the problem that zero-sequence transformer can not meet breaker actuation under overload current; (2) the utility model effectively can improve the fail safe of circuit; (3) the utility model does not increase manufacturing cost, makes whole product have the very strong market competitiveness.
Accompanying drawing explanation
In order to make content of the present utility model more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is cutaway view of the present utility model;
Fig. 2 is stereogram of the present utility model;
Fig. 3 is three-dimensional cutaway view of the present utility model.
Embodiment
See Fig. 1 to Fig. 3, the utility model comprises shell 1, core body 2 and contact pin 3; The enamelled wire 22 that described core body 2 comprises iron core 21 and is wound on iron core 21; Described core body 2 is arranged in shell 1, and the lower end of shell 1 is provided with two contact pins 3, and the terminals of enamelled wire 22 are connected with two contact pins 3 respectively; It is characterized in that: described iron core 21 comprises the lamination 21-1 of six permalloy materials and the pulsatile tablets 21-2 of a slice silicon steel material; The both sides of described pulsatile tablets 21-2 are all stacking is provided with three lamination 21-1; Casting glue 4 is filled with between described core body 2 and shell 1.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (4)
1. a zero-sequence transformer, comprises shell (1), core body (2) and contact pin (3); Described core body (2) comprises iron core (21) and is wound on the enamelled wire (22) on iron core (21); Described core body (2) is arranged in shell (1), and the lower end of shell (1) is provided with two contact pins (3), and the terminals of enamelled wire (22) are connected with two contact pins (3) respectively; It is characterized in that: described iron core (21) comprises the lamination (21-1) of permalloy material and the pulsatile tablets (21-2) of silicon steel material; The lamination (21-1) of described at least a slice becomes iron core (21) with pulsatile tablets (21-2) composite stack of at least a slice.
2. a kind of zero-sequence transformer according to claim 1, is characterized in that: described iron core (21) comprises six laminations (21-1) and a slice pulsatile tablets (21-2).
3. a kind of zero-sequence transformer according to claim 2, is characterized in that: the both sides of described pulsatile tablets (21-2) are all stacking is provided with three laminations (21-1).
4., according to a kind of zero-sequence transformer of claims 1 to 3 described in one of them, it is characterized in that: between described core body (2) and shell (1), be filled with casting glue (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404087.4U CN204067020U (en) | 2014-07-21 | 2014-07-21 | A kind of zero-sequence transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404087.4U CN204067020U (en) | 2014-07-21 | 2014-07-21 | A kind of zero-sequence transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204067020U true CN204067020U (en) | 2014-12-31 |
Family
ID=52208477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420404087.4U Active CN204067020U (en) | 2014-07-21 | 2014-07-21 | A kind of zero-sequence transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204067020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627771A (en) * | 2020-03-31 | 2020-09-04 | 青岛鼎信通讯股份有限公司 | A novel mutual-inductor structure for overload protection |
-
2014
- 2014-07-21 CN CN201420404087.4U patent/CN204067020U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111627771A (en) * | 2020-03-31 | 2020-09-04 | 青岛鼎信通讯股份有限公司 | A novel mutual-inductor structure for overload protection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204067020U (en) | A kind of zero-sequence transformer | |
| CN103309272B (en) | Safety control circuit for bimanual assembly machine | |
| CN103809146A (en) | Test method of main transformer CT (Current Transformer) | |
| CN103904610A (en) | Movable line protection device | |
| CN204945184U (en) | Multifunctional combined experimental wiring box | |
| CN203799988U (en) | Plastic casing electricity leakage breaker | |
| CN204886390U (en) | High pressure dual power supply's wiring circuit | |
| CN204517285U (en) | A kind of insulated shielding cover | |
| CN204706525U (en) | A kind of hydraulic-electromagnetic residual current circuit breaker | |
| CN202472304U (en) | Safety switch circuit | |
| CN203070896U (en) | K-coefficient transformer | |
| CN203277250U (en) | Connection plate structure of electric leakage circuit breaker | |
| CN202487380U (en) | Structure for combined type transformer fuse protection | |
| CN206379317U (en) | Rccb | |
| CN204117831U (en) | A kind of microcomputer protecting device power-type current transformer | |
| CN203387104U (en) | Low-tension power distribution cabinet capable of electric leakage protection | |
| CN203278188U (en) | Zero line breaking protection device | |
| CN203398076U (en) | Insulating device preventing breaking radial-arm type fuse from mis-closing | |
| CN203243020U (en) | Three-phase imbalance circuit breaker | |
| CN204558227U (en) | A kind of outdoor vacuum switch power transformer | |
| CN203774746U (en) | Mobile line protection device | |
| CN204517369U (en) | The over current of motor of electric block and the protective device of phase shortage | |
| CN203205328U (en) | High-voltage load switch equipped with five-prevention lock | |
| CN203165658U (en) | Zero-sequence current transformer for residual current circuit breaker | |
| CN203466140U (en) | Simulation fuse |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |