CN209691708U - A kind of high-speed circuit breaker control loop - Google Patents
A kind of high-speed circuit breaker control loop Download PDFInfo
- Publication number
- CN209691708U CN209691708U CN201920868722.7U CN201920868722U CN209691708U CN 209691708 U CN209691708 U CN 209691708U CN 201920868722 U CN201920868722 U CN 201920868722U CN 209691708 U CN209691708 U CN 209691708U
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- Prior art keywords
- circuit breaker
- speed circuit
- parallel
- discharge loop
- module
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Abstract
The utility model discloses a kind of high-speed circuit breaker control loops in field of circuit breakers, it is made of power supply, parallel module, pre-charge module, discharge loop and load, discharge loop input termination power output end, discharge loop exports terminating load, after parallel module is in parallel with pre-charge module, it is serially connected between discharge loop anode and positive pole, the utility model can reach no arc and open, turn off, high-speed circuit breaker work in no arc open, off state, the service life will greatly improve；High-speed circuit breaker requirements of type selecting reduces, and the breaking capacity especially under overcurrent and short-circuit conditions requires to reduce, and will substantially reduce high-speed circuit breaker cost, can be used in bullet train.
Description
Technical field
The utility model relates to a kind of breaker, in particular to a kind of high-speed circuit breaker.
Background technique
Railcar electrical system has the characteristics that load is more, voltage is high, capacity is big at present, occurs in subsystem load short
When the failures such as road, overload, circuital current is big, easily causes equipment damage, or even contact net is caused to damage.High-speed circuit breaker is as ground
An important component in iron vehicle electrical systems, undertakes the task of circuit over-current protection, short circuit, mistake can occurs in system
Quickly cutting is protected when the failures such as stream.But high-speed circuit breaker has actuation time length, disjunction electricity as a kind of mechanical organ
Lunule rings the disadvantages of its reliability and service life.
Utility model content
The purpose of the utility model is to provide a kind of high-speed circuit breaker control loops, extend breaker service life, reduce
Cost.
Purpose of the utility model is realized as follows: a kind of high-speed circuit breaker control loop, by power supply, parallel module,
Pre-charge module, discharge loop and load composition, the discharge loop input termination power output end, discharge loop output end
Load is connect, after the parallel module is in parallel with pre-charge module, is serially connected between discharge loop anode and positive pole.
As further limiting for the utility model, the parallel module is by solid-state switch K1 and mechanical switch in parallel
T composition.
As further limiting for the utility model, the pre-charge module is made of concatenated resistance R2 and switch K2.
As further limiting for the utility model, the discharge loop is made of resistance R3, switch K3, diode D, institute
State in parallel with diode D after resistance R3 connects with switch K3, the cathode of the diode D is as output cathode.
In utility model works, solid-state switch is opened when opening first, the fully on rear end voltage of solid-state switch only 2 V
Left and right, opens breaker, breaker can be made to open under lower pressure, and (lower pressure also avoids circuit breaker voltage from puncturing again at this time
Generated electric arc)；Cut-off breaker first when disjunction, since solid-state switch is still on state, breaking both ends at this time
Voltage is the conducting voltage of solid-state switch, which is lower than arcing voltage, therefore thick-less vane may be implemented in breaker；Cooperation is pre-
Charging module, which can be eliminated to open, has very big dash current in solid-state switch moment circuit.Compared with prior art, this is practical
Novel beneficial effect is that the utility model can reach no arc and open, turn off, and high-speed circuit breaker works in no arc and opens, closes
Disconnected state, service life will greatly improve；Contactor is replaced using the solid-state switch of higher reliability, that improves high-speed circuit breaker can
By property；For circuit structure, improvement project uses paralleling model, and the reliability of paralleling model is reliable much higher than series model
Property, high-speed circuit breaker module global reliability improves；High-speed circuit breaker requirements of type selecting reduces, especially in overcurrent and short-circuit conditions
Under breaking capacity require reduce, high-speed circuit breaker cost will be substantially reduced.The utility model can be used in bullet train.
Detailed description of the invention
Fig. 1 is the utility model circuit diagram.
Specific embodiment
A kind of high-speed circuit breaker control loop as shown in Figure 1, by power supply, parallel module A, pre-charge module B, discharges back
Road C and load composition, discharge loop C input termination power output end, discharge loop C export terminating load, parallel module A with
After pre-charge module B is in parallel, it is serially connected between discharge loop anode and positive pole, parallel module A is by solid-state switch in parallel
K1 and mechanical switch T composition, pre-charge module B are made of concatenated resistance R2 and switch K2, discharge loop C by resistance R3,
Switch K3, diode D composition, resistance R3 is in parallel with diode D after connecting with switch K3, and the cathode of diode D is being used as output just
Pole.
The utility model is not limited to above-described embodiment, on the basis of technical solution disclosed by the utility model, this
For the technical staff in field according to disclosed technology contents, not needing creative labor can be special to some of which technology
Sign makes some replacements and deformation, these replacements and deformation are within the protection scope of the present utility model.
Claims (4)
1. a kind of high-speed circuit breaker control loop, which is characterized in that by power supply, parallel module, pre-charge module, discharge loop with
And load composition, discharge loop input termination power output end, discharge loop export terminating load, the parallel module with
After pre-charge module is in parallel, it is serially connected between discharge loop anode and positive pole.
2. a kind of high-speed circuit breaker control loop according to claim 1, which is characterized in that the parallel module is by parallel connection
Solid-state switch K1 and mechanical switch T composition.
3. a kind of high-speed circuit breaker control loop according to claim 1, which is characterized in that the pre-charge module is by going here and there
The resistance R2 and switch K2 of connection are formed.
4. a kind of high-speed circuit breaker control loop according to claim 1, which is characterized in that the discharge loop is by resistance
R3, switch K3, diode D composition, the resistance R3 is in parallel with diode D after connecting with switch K3, the cathode of the diode D
As output cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920868722.7U CN209691708U (en) | 2019-06-11 | 2019-06-11 | A kind of high-speed circuit breaker control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920868722.7U CN209691708U (en) | 2019-06-11 | 2019-06-11 | A kind of high-speed circuit breaker control loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209691708U true CN209691708U (en) | 2019-11-26 |
Family
ID=68609491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920868722.7U Active CN209691708U (en) | 2019-06-11 | 2019-06-11 | A kind of high-speed circuit breaker control loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209691708U (en) |
-
2019
- 2019-06-11 CN CN201920868722.7U patent/CN209691708U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |