CN202363350U - Self-protection vacuum contactor - Google Patents
Self-protection vacuum contactor Download PDFInfo
- Publication number
- CN202363350U CN202363350U CN 201120490645 CN201120490645U CN202363350U CN 202363350 U CN202363350 U CN 202363350U CN 201120490645 CN201120490645 CN 201120490645 CN 201120490645 U CN201120490645 U CN 201120490645U CN 202363350 U CN202363350 U CN 202363350U
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- CN
- China
- Prior art keywords
- self
- protection
- phase line
- controller
- vacuum contactor
- 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 present utility model provides a self-protection vacuum contactor. The contactor comprises a brake-separating operation mechanism, two phase line current transformers, an inrush current controller and a self-protection electromagnet, wherein one ends of secondary sides of the two phase line current transformers are respectively connected with the ground, the other ends of the secondary sides of the two phase line current transformers are respectively connected with two input ends of the inrush current controller, two output ends of the inrush current controller are connected in series in a coil loop of the self-protection electromagnet, and an armature of the self-protection electromagnet is connected with the brake-separating operation mechanism. In the self-protection vacuum contactor, the current transformers (CT), the inrush current controller (U) and the self-protection electromagnet (DC) are combined, the over-current short-circuit protection function is realized, and the contactor is simple in structure, low in costs, strong in practicality and high in reliability.
Description
Technical field
The utility model relates to a kind of vacuum contactor, specifically, has related to a kind of self-shield vacuum contactor.
Background technology
AC high voltage vacuum contactorBe widely used in the electric power system, for remote connection and disjunction and frequent starting alternating current motor, transformer and capacitor group etc., particularly in recent years, in 10KV high-voltage prepayment system, be mainly used in branch, close the control appliance use; In practical application, because vacuum contactor has that volume is little, in light weight, low price, advantage such as easy for installation, it has substituted the circuit breaker of most other model; But; It is compared with the circuit breaker of general band protection, when having certain weak point, particularly circuit the people to occur to be the line short that causes or natural calamity causes; Vacuum contactor can not play the effect of route protection; In case some short circuits of branch road bring unnecessary loss of outage all can for each user of a circuit, have brought great trouble also for the electric power maintenance personal.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
Summary of the invention
The purpose of the utility model is the deficiency to prior art, thus provide a kind of simple in structure, cost is low, practical, self-shield vacuum contactor that reliability is high.
To achieve these goals; The technical scheme that the utility model adopted is: a kind of self-shield vacuum contactor; It comprises on/off operation mechanism, two phase line current transformers, controller and self-shield electromagnet shove; Wherein, secondary side one end of two phase line current transformers is ground connection respectively, and the secondary side other end of two phase line current transformers connects two inputs of the said controller that shoves respectively; Two outputs of the said controller that shoves are serially connected in the said self-shield magnet spool loop, and said self-shield electromagnet armature connects said on/off operation mechanism.
The relative prior art of the utility model has substantive distinguishing features and progress; Specifically; This self-shield vacuum contactor adopts the combination of phase line current transformer CT, shove controller U and self-shield electromagnet DC; Realized overcurrent, short-circuit protection function, its have simple in structure, cost is low, practical, advantage that reliability is high.
Description of drawings
Fig. 1 is the electrical block diagram of the utility model.
Embodiment
Through embodiment, the technical scheme of the utility model is done further detailed description below.
As shown in Figure 1, a kind of self-shield vacuum contactor, it comprises contactor body, on/off operation mechanism FZ, two phase line current transformer CT, controller U and be fixed on the self-shield electromagnet DC on the said contactor body shoves; Wherein, Two corresponding respectively A phase line and C phase lines that insert vacuum contactor of phase line current transformer CT are installed; Secondary side one end of two phase line current transformer CT is ground connection respectively; The secondary side other end of two phase line current transformer CT connects two inputs of the said controller U that shoves respectively, and two outputs of the said controller U that shoves are serially connected in the wire loop of said self-shield electromagnet DC, and the armature of said self-shield electromagnet DC connects said on/off operation mechanism FZ.
During use; Gather overcurrent, short-circuit signal through two phase line current transformer CT, the controller U that shoves carries out logic determines according to the signal of gathering, in case define overcurrent, short-circuit signal; Then send trip signal; The wire loop of self-shield electromagnet DC is broken off, and then, the armature of self-shield electromagnet DC promotes on/off operation mechanism FZ and accomplishes the trip protection action.
Through the controller U that shoves, can export secondary current more accurately to self-shield electromagnet DC, and no-flashy-flow output; Can be according to user's starting current, adjusting the controller U that shoves voluntarily is quick-break or 5 time-delay gears, thereby makes the safe operation of whole piece circuit, reliability is greatly enhanced.
Should be noted that at last: above embodiment only in order to the explanation the utility model technical scheme but not to its restriction; Although with reference to preferred embodiment the utility model has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can make amendment to the embodiment of the utility model perhaps is equal to replacement to the part technical characterictic; And not breaking away from the spirit of the utility model technical scheme, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (1)
1. self-shield vacuum contactor; Comprise on/off operation mechanism; It is characterized in that: it also comprises two phase line current transformers, controller and self-shield electromagnet shove; Wherein, secondary side one end of two phase line current transformers is ground connection respectively, and the secondary side other end of two phase line current transformers connects two inputs of the said controller that shoves respectively; Two outputs of the said controller that shoves are serially connected in the said self-shield magnet spool loop, and said self-shield electromagnet armature connects said on/off operation mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120490645 CN202363350U (en) | 2011-12-01 | 2011-12-01 | Self-protection vacuum contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120490645 CN202363350U (en) | 2011-12-01 | 2011-12-01 | Self-protection vacuum contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202363350U true CN202363350U (en) | 2012-08-01 |
Family
ID=46574514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120490645 Expired - Fee Related CN202363350U (en) | 2011-12-01 | 2011-12-01 | Self-protection vacuum contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202363350U (en) |
-
2011
- 2011-12-01 CN CN 201120490645 patent/CN202363350U/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: 20120801 Termination date: 20141201 |
|
| EXPY | Termination of patent right or utility model |