CN201478790U - Electromagnetic undervoltage release - Google Patents
Electromagnetic undervoltage release Download PDFInfo
- Publication number
- CN201478790U CN201478790U CN2009202335023U CN200920233502U CN201478790U CN 201478790 U CN201478790 U CN 201478790U CN 2009202335023 U CN2009202335023 U CN 2009202335023U CN 200920233502 U CN200920233502 U CN 200920233502U CN 201478790 U CN201478790 U CN 201478790U
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- circuit
- voltage detection
- electric capacity
- electromagnetic
- undervoltage release
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Abstract
The utility model relates to the technical field of undervoltage releases, in particular to an electromagnetic undervoltage release, which is provided with a strong-start circuit. The strong-start circuit comprises a filter circuit, a step-down capacitor, a bridge rectifier circuit, a starting capacitor, an energy storage voltage detection circuit, a grid voltage detection circuit, a control circuit and a system power circuit, wherein the filter circuit is connected with a power grid, the energy storage voltage detection circuit detects voltage of the starting capacitor, the grid voltage detection circuit detects voltage of the power grid, and the system power circuit supplies power to the control circuit. Besides, an output end of the filter circuit is connected with the bridge rectifier circuit after being in serial connection with the step-down capacitor, an output end of the bridge rectifier circuit is connected an anode of the starting capacitor and an electromagnetic coil, a cathode of the starting capacitor is grounded, the other end of the electromagnetic coil is in serial connection with a switch circuit controlled by the control circuit, the other end of the switch circuit is grounded, and output ends of the energy storage voltage detection circuit and the grid voltage detection circuit are connected with an input end of the control circuit. The electromagnetic undervoltage release resolves technical problems that the existing electromagnetic undervoltage releases are high in coil heat value, low in starting torque or complicated in circuit and the like.
Description
Technical field
The utility model relates to the device for under-voltage releasing equipment technical field, especially a kind of electromagnetic undervoltage release.
Background technology
Device for under-voltage releasing equipment is the core component in the low tension switch, and the working method that device for under-voltage releasing equipment drives push rod has two types of electromagnetic type and permanent-magnet types.
Compare with the permanent-magnet type device for under-voltage releasing equipment, it is simple that electromagnetic undervoltage release has a circuit, and after the outage, push rod has " resetting certainly " ability under the effect of spring force.
Existing electromagnetic undervoltage release ubiquity coil heating amount height, the little or circuit of device for under-voltage releasing equipment staring torque be problem such as complexity too.
The utility model content
The technical problems to be solved in the utility model is: solve existing electromagnetic undervoltage release caloric value height, little or the circuit of the staring torque technical problem of complexity etc. too during undervoltage tripping, the utility model provides a kind of electromagnetic undervoltage release, it is little that it has caloric value, starting torque is big, is applicable to the undervoltage tripping occasion of various low tension switch requirements such as self-priming, Sucking-assisting type.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of electromagnetic undervoltage release, have strong start-up circuit, described strong start-up circuit comprises filter circuit, decompression capacitor, bridge rectifier, startup electric capacity, the network voltage detection circuit of depositing energy testing circuit, detection of grid voltage, the control circuit that detect start-up circuit voltage and the system power supply circuit of powering to control circuit that is connected with electrical network; Connect bridge rectifier behind the output serial connection decompression capacitor of filter circuit, the output termination of bridge rectifier starts capacitor anode and solenoid, the minus earth of electric capacity, another termination serial connection one of solenoid is by the switching circuit of control circuit control, the other end ground connection of switching circuit, depositing can voltage detecting circuit and the output connection control circuit input of network voltage detection circuit.
Electromagnetic undervoltage release starts the instantaneous mechanical inertia of desiring to overcome " push rod ", in-house frictional force, the reaction force of load in " dropout ".In the utility model, line voltage behind step-down electricity capacitance decompression, converts direct voltage through bridge rectifier through filter circuit, then to starting the electric capacity charging.Started electric capacity before the normally opened contact of switching circuit is not closed, be charged to certain numerical value in advance, can detect its magnitude of voltage by voltage detecting circuit, and after judging that this numerical value satisfies " the strong startup " condition, signal send control circuit by depositing.Normally opened contact closed moment starts that electric charge all is released to solenoid on the electric capacity, plays " the strong startup " purpose.Afterwards, start the filter function of electric capacity performance electric capacity.Before normally opened contact is not closed, to starting the electric capacity charging, finishes depositing of strong startup and can prepare by decompression capacitor.After the normally opened contact closure, the voltage on the solenoid has the size decision of the capacity of decompression capacitor, and decompression capacitor do not produce active power, and the whole caloric value of device for under-voltage releasing equipment is little.The utility model control circuit adopts " two condition " to judge, whether needs " action " except judging the signal that the network voltage detection circuit is sent here, judges the signal of " depositing the energy testing circuit " when release starts simultaneously.Both satisfied the countries concerned's standard of undervoltage tripping, realized again that big moment started.Decompression capacitor is serially connected in ac circuit, does not consume active power.Start electric capacity enough energy (staring torque) are provided for the device for under-voltage releasing equipment coil is instantaneous.
For reaching good filtering effect, further: described filter circuit is by first electric capacity, second electric capacity and the π type filter circuit that inductance is formed.
Be to reduce the caloric value of electromagnetic undervoltage release, the input of described network voltage detection circuit is connected in series the output that connects filter circuit behind the first halfwave rectifier diode; The input of described system power supply circuit is connected in series the negative pole that connects the first halfwave rectifier diode behind the second halfwave rectifier diode.
The beneficial effects of the utility model are, electromagnetic undervoltage release of the present utility model, advantage such as it is little to have caloric value, and dropout instantaneous starting moment is big, and circuit is simple.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of the embodiment of electromagnetic undervoltage release of the present utility model.
1. filter circuits among the figure, CK. decompression capacitor, BG1. bridge rectifier, CS. start electric capacity, 2. deposit energy testing circuit, 3. network voltage detection circuit, 4. control circuit, 5. system power supply circuit, 6. switching circuit, 7. solenoid, CL1. first electric capacity, CL2. second electric capacity, L1. inductance, D1. the first halfwave rectifier diode, the D2. second halfwave rectifier diode.
Embodiment
In conjunction with the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
The embodiment of electromagnetic undervoltage release of the present utility model as shown in Figure 1, have strong start-up circuit, described strong start-up circuit comprises filter circuit 1, decompression capacitor CK, the bridge rectifier BG1 that is connected with electrical network, the network voltage detection circuit 3 of depositing energy testing circuit 2, detection of grid voltage, the control circuit 4 that start capacitor C S, detection startup capacitance voltage and the system power supply circuit 5 of powering to control circuit 4; Filter circuit 1 is by the first capacitor C L1, the second capacitor C L2 and the π type filter circuit that inductance L 1 is formed.Meet bridge rectifier BG1 behind the output serial connection decompression capacitor CK of filter circuit 1, the output termination of bridge rectifier BG1 starts anode and the solenoid 7 of capacitor C S, start the minus earth of capacitor C S, another termination serial connection one of solenoid 7 is by the switching circuit 6 of control circuit 4 controls, the other end ground connection of switching circuit 6, depositing can voltage detecting circuit 2 and output connection control circuit 4 inputs of network voltage detection circuit 3.The input of network voltage detection circuit 3 is connected in series the output that connects filter circuit 1 behind the first halfwave rectifier diode D1.The input of system power supply circuit 5 is connected in series the negative pole that meets the first halfwave rectifier diode D1 behind the second halfwave rectifier diode D2.Control circuit 4 is for single-chip microcomputer with signal operation and disposal ability etc.
Electromagnetic undervoltage release is starting the instantaneous mechanical inertia of desiring to overcome " push rod ", in-house frictional force, the reaction force of load.In the utility model, line voltage after the decompression capacitor step-down, converts direct voltage through bridge rectifier through filter circuit, then to starting the electric capacity charging.Started electric capacity before the normally opened contact of switching circuit is not closed, be charged to certain numerical value in advance, can detect its magnitude of voltage by voltage detecting circuit, and after judging that this numerical value satisfies " the strong startup " condition, signal send control circuit by depositing.Normally opened contact closed moment starts that electric charge all is released to solenoid on the electric capacity, plays " the strong startup " purpose.Afterwards, start the filter function of electric capacity performance electric capacity.Before normally opened contact is not closed, to starting the electric capacity charging, finishes depositing of strong startup and can prepare by decompression capacitor.After the normally opened contact closure, the voltage on the solenoid has the size decision of the capacity of decompression capacitor, and decompression capacitor do not produce active power, and the whole caloric value of device for under-voltage releasing equipment is little.The utility model adopts " two condition " to judge, whether control circuit needs " action " except the signal of judging the network voltage detection circuit and sending here, judges that simultaneously device for under-voltage releasing equipment must establish the signal of " depositing the energy voltage detecting circuit " when beginning by cable.Both satisfied the countries concerned's standard of device for under-voltage releasing equipment, realized again that big moment started.
The system power supply circuit of halfwave rectifier is compared with full-wave circuit, and power consumption has reduced half, has also reduced caloric value.
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (4)
1. electromagnetic undervoltage release, have strong start-up circuit, it is characterized in that: described strong start-up circuit comprises filter circuit (1), decompression capacitor (CK), bridge rectifier (BG1), startup electric capacity (CS), the network voltage detection circuit (3) of depositing energy testing circuit (2), detection of grid voltage, the control circuit (4) that detect the startup capacitance voltage and the system power supply circuit (5) of powering to control circuit (4) that is connected with electrical network; Connect bridge rectifier (BG1) behind the output serial connection decompression capacitor (CK) of filter circuit (1), the output termination of bridge rectifier (BG1) starts the anode and the solenoid (7) of electric capacity (CS), start the minus earth of electric capacity (CS), another termination serial connection one of solenoid (7) is by the switching circuit (6) of control circuit (4) control, the other end ground connection of switching circuit (6), depositing can voltage detecting circuit (2) and output connection control circuit (4) input of network voltage detection circuit (3).
2. electromagnetic undervoltage release according to claim 1 is characterized in that: the π type filter circuit of described filter circuit (1) for being made up of first electric capacity (CL1), second electric capacity (CL2) and an inductance (L1).
3. electromagnetic undervoltage release according to claim 1 is characterized in that: the input of described network voltage detection circuit (3) is connected in series the output that connects filter circuit (1) behind the first halfwave rectifier diode (D1).
4. electromagnetic undervoltage release according to claim 3 is characterized in that: the input of described system power supply circuit (4) is connected in series the negative pole that connects the first halfwave rectifier diode (D1) behind the second halfwave rectifier diode (D2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202335023U CN201478790U (en) | 2009-08-03 | 2009-08-03 | Electromagnetic undervoltage release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202335023U CN201478790U (en) | 2009-08-03 | 2009-08-03 | Electromagnetic undervoltage release |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201478790U true CN201478790U (en) | 2010-05-19 |
Family
ID=42415046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202335023U Expired - Lifetime CN201478790U (en) | 2009-08-03 | 2009-08-03 | Electromagnetic undervoltage release |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201478790U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630831B (en) * | 2009-08-03 | 2011-12-07 | 江苏国星电器有限公司 | Electromagnetic undervoltage release |
| CN103378753A (en) * | 2012-04-30 | 2013-10-30 | 控制技术有限公司 | Power supply |
-
2009
- 2009-08-03 CN CN2009202335023U patent/CN201478790U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630831B (en) * | 2009-08-03 | 2011-12-07 | 江苏国星电器有限公司 | Electromagnetic undervoltage release |
| CN103378753A (en) * | 2012-04-30 | 2013-10-30 | 控制技术有限公司 | Power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100519 Effective date of abandoning: 20090803 |