CN206834738U - Switch limits device of restriking - Google Patents
Switch limits device of restriking Download PDFInfo
- Publication number
- CN206834738U CN206834738U CN201720555562.1U CN201720555562U CN206834738U CN 206834738 U CN206834738 U CN 206834738U CN 201720555562 U CN201720555562 U CN 201720555562U CN 206834738 U CN206834738 U CN 206834738U
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- CN
- China
- Prior art keywords
- breaker
- switch
- restriking
- restriked
- fracture
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- 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.)
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- Arc-Extinguishing Devices That Are Switches (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model discloses one kind to switch limits device of restriking.It includes the breaker (2) being connected in series in loop, and the controller (7) electrically connected with the control terminal of breaker (2), the both ends of particularly breaker (2) are connected in parallel to limiting circuit breaker fracture and restriked branch road, limiting circuit breaker fracture branch road of restriking is the switch (3) being connected in series, damped resistor (4) and capacitor (5), and it is connected in parallel in the damped resistor (4) of concatenation and the oxidation zinc component (6) at capacitor (5) both ends, the control terminal of switch (3) electrically connects with the auxiliary switch of breaker (2), when controlling breaker (2) disjunction for controller (7), the auxiliary switch delay section breaker (3) of breaker (2).It will not produce overvoltage in disjunction perception or capacitive load, avoid restriking for breaker (2) fracture, can be widely used in the breaker in electrical circuit without disjunction of restriking.
Description
Technical field
A kind of limits device is the utility model is related to, it is especially a kind of to switch limits device of restriking.
Background technology
Needs based on operation power and Electrical Safety, people are more with being connected in series with breaker, such as mesh in electrical circuit
Before the various electric power facilities that are used.Though breaker in these electric power facilities can effectively disjunction electric loading and power network
Connection, but also there is weak point：When disjunction perception or capacitive load, the energy being stored in inductance or electric capacity can be fast
Discharge fastly, and snapback voltage is produced at the fracture both ends of breaker；Now, if the speed of the recovery voltage at fracture both ends
Degree will occur phenomenon of restriking during disjunction, produce therefrom high higher than the resume speed of arc-extinguishing chamber of circuit breaker insulation
Multiple Restriking overvoltage, cause the destruction to insulation of electrical installation in power system.
Utility model content
The technical problems to be solved in the utility model is to overcome weak point of the prior art, there is provided one kind is avoided that disconnected
Fracture both ends occur the restriking switch of phenomenon is restriked limits device during the device disjunction of road.
To solve technical problem of the present utility model, used technical scheme is that switch restrikes limits device including going here and there
Connection is connected to the breaker in loop, and the controller electrically connected with the control terminal of breaker, particularly：
The both ends of the breaker are connected in parallel to limiting circuit breaker fracture and restriked branch road；
Limiting circuit breaker fracture branch road of restriking is the switch, damped resistor and capacitor being connected in series, and simultaneously
Connection is connected to the damped resistor of concatenation and the oxidation zinc component at capacitor both ends, the control terminal of the switch and breaker it is auxiliary
Switch is helped to electrically connect, when controlling breaker disjunction for controller, the auxiliary switch delay section breaker of breaker.
The further improvement for limits device of being restriked as switch：
Preferably, switch and switched for mechanical contact switch, or electronic non-contact.
Preferably, the resistance of damped resistor is 10-500 Ω.
Preferably, controller is time-delay trigger, or microcomputer complex protection device, or single-chip microcomputer, or digital signal processor, or
Microcomputer.
It is relative to the beneficial effect of prior art：
After such structure, when breaker disjunction, both due to by damped resistor and capacitor bank into loop
The climbing that voltage is recovered at arc-chutes fracture both ends in breaker interrupting process is slow down, and because aoxidizing the excessively electric of zinc component composition
Pressure protective loop inhibits the amplitude of overvoltage, so as to prevent breaker excessively electric caused by disjunction perception or capacitive load
Pressure, avoids restriking for breaker fracture；It is set to can be widely used in the breaker in electrical circuit without disjunction of restriking.
Brief description of the drawings
Fig. 1 is a kind of basic structure schematic diagram of the present utility model.
Embodiment
Preferred embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Referring to Fig. 1, the composition for switching limits device of restriking is as follows：
The both ends of breaker 2 are connected in parallel to limiting circuit breaker fracture and restriked branch road.Limiting circuit breaker fracture is restriked branch road
For the switch 3, damped resistor 4 and capacitor 5 being connected in series, and it is connected in parallel in the damped resistor 4 and electric capacity of concatenation
The oxidation zinc component 6 at the both ends of device 5, wherein, the control terminal of breaker 2 electrically connects with the output end of controller 7, switchs 3 control
End electrically connects with the auxiliary switch of breaker 2；Switch 3 therein is mechanical contact switch (or electronic non-contact switch),
The resistance of damped resistor 4 is 10-500 Ω (being determined by the voltage class of branch road), and controller 7 is that time-delay trigger (can be electricity
Microcomputer complex protection device in power outgoing line cabinet, or single-chip microcomputer, or digital signal processor, or microcomputer).
In use, one end of breaker in the present apparatus 2 need to only be electrically connected with bus terminal 1, the other end and face terminals 8
Electrical connection.
For the utility model when normal operation, breaker 2 and switch 3 are closure state.When needing breaking circuit breaker 2
When, controller 7 sends breaking signal, its auxiliary switch when disjunction of breaker 2 through its output end to the control terminal of breaker 2
Together with disjunction, because the actuation time of the auxiliary switch of breaker 2 is millisecond magnitude, the branch road and limiting circuit breaker fracture is restriked
Actuation time is only musec order, and disjunction moment of the switch 3 that is, limiting circuit breaker fracture is restriked in branch road lags far behind disconnected
At the disjunction moment of road device 2, in the period lagged herein, limiting circuit breaker fracture is restriked damped resistor 4 and electricity in branch road
Container 5 limits the speed of incision position voltage rising, and oxidation zinc component 6 has restrained the maximum of incision position voltage, so that
The voltage of incision position is much smaller than the resume speed of the arc-chutes of breaker 2 insulation, has prevented restriking for the fracture of breaker 2.
Obviously, those skilled in the art can to it is of the present utility model switch restrike limits device carry out it is various change and
Modification is without departing from spirit and scope of the present utility model.So, if belonging to these modifications and variations of the present utility model
Within the scope of the utility model claims and its equivalent technologies, then the utility model is also intended to comprising these changes and modification
Inside.
Claims (4)
1. one kind switch is restriked limits device, including the breaker (2) being connected in series in loop, and with breaker (2)
The controller (7) of control terminal electrical connection, it is characterised in that：
The both ends of the breaker (2) are connected in parallel to limiting circuit breaker fracture and restriked branch road；
Limiting circuit breaker fracture branch road of restriking is the switch (3), damped resistor (4) and capacitor (5) being connected in series, with
And the damped resistor (4) of concatenation and the oxidation zinc component (6) at capacitor (5) both ends are connected in parallel in, the control of the switch (3)
End processed electrically connects with the auxiliary switch of breaker (2), when controlling breaker (2) disjunction for controller (7), breaker (2)
Auxiliary switch delay section breaker (3).
The limits device 2. switch according to claim 1 is restriked, it is characterized in that switch (3) is mechanical contact switch, or
Electronic non-contact switchs.
The limits device 3. switch according to claim 1 is restriked, it is characterized in that the resistance of damped resistor (4) is 10-500
Ω。
The limits device 4. switch according to claim 1 is restriked, it is characterized in that controller (7) is time-delay trigger, or it is micro-
Machine complex protection device, or single-chip microcomputer, or digital signal processor, or microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720555562.1U CN206834738U (en) | 2017-05-18 | 2017-05-18 | Switch limits device of restriking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720555562.1U CN206834738U (en) | 2017-05-18 | 2017-05-18 | Switch limits device of restriking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206834738U true CN206834738U (en) | 2018-01-02 |
Family
ID=60771060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720555562.1U Active CN206834738U (en) | 2017-05-18 | 2017-05-18 | Switch limits device of restriking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206834738U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069689A (en) * | 2017-05-18 | 2017-08-18 | 安徽天电气技术股份有限公司 | Switch limits device of restriking |
| CN114583666A (en) * | 2020-12-01 | 2022-06-03 | 清华大学 | Voltage distribution method for vacuum mechanical switch and gas mechanical switch |
-
2017
- 2017-05-18 CN CN201720555562.1U patent/CN206834738U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069689A (en) * | 2017-05-18 | 2017-08-18 | 安徽天电气技术股份有限公司 | Switch limits device of restriking |
| CN114583666A (en) * | 2020-12-01 | 2022-06-03 | 清华大学 | Voltage distribution method for vacuum mechanical switch and gas mechanical switch |
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