CN204597447U - A kind of overcurrent protection module of the band self-locking for regulator cubicle - Google Patents
A kind of overcurrent protection module of the band self-locking for regulator cubicle Download PDFInfo
- Publication number
- CN204597447U CN204597447U CN201520223424.4U CN201520223424U CN204597447U CN 204597447 U CN204597447 U CN 204597447U CN 201520223424 U CN201520223424 U CN 201520223424U CN 204597447 U CN204597447 U CN 204597447U
- Authority
- CN
- China
- Prior art keywords
- resistance
- pin
- amplifier
- winding displacement
- triode
- 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
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a kind of overcurrent protection module of the band self-locking for regulator cubicle; comprise sampling protected location, signal amplification unit, voltage comparison unit and winding displacement from lock unit; described sampled signal carries out sampling protection to load; again sampled signal is transferred to signal amplification unit to amplify sampled signal; then the sampled signal after amplification is passed to voltage comparison unit; by exporting different comparison values, and comparison value is passed to winding displacement and realize winding displacement and self-locking from lock unit.The beneficial effects of the utility model are: structure is simple, sampled signal is accurate, band auto-lock function strong to circuit protection effect.
Description
Technical field
The utility model belongs to regulator cubicle technical field, especially relates to a kind of overcurrent protection module of the band self-locking for regulator cubicle.
Background technology
Regulator cubicle is some switches mainly, and be generally responsible distribution and route protection etc., realize some controlling functions, generally there is switch the inside, the components and parts of relay or PLC and so on or product.Electrical control cabinet is according to different needs, adopts different control.According to the number of controlled device, size selects different electric components to be combined into a cabinet.Usually need in this process to carry out sampling analysis to signal, traditional sampling circuit sampling effect is bad, and protective effect is also little, is difficult to the demand met in practical application.
Summary of the invention
The purpose of this utility model is to provide that a kind of structure is simple, sampled signal accurately, the stream protection module of, band auto-lock function strong to circuit protection effect.
The technical solution of the utility model is: a kind of overcurrent protection module of the band self-locking for regulator cubicle, comprise sampling protected location, signal amplification unit, voltage comparison unit and winding displacement from lock unit, described sampled signal carries out sampling protection to load, again sampled signal is transferred to signal amplification unit to amplify sampled signal, then the sampled signal after amplification is passed to voltage comparison unit, by exporting different comparison values, and comparison value is passed to winding displacement and realize winding displacement and self-locking from lock unit;
Described sampling protected location comprises load S1, described load S1 is connected with power supply VCC, and described load S1 connects with resistance R1, resistance R1 is connected with resistance R2 and resistance R3 respectively, described resistance R2 other end ground connection, resistance R3 is connected with electrochemical capacitor C1 anode and signal amplification unit respectively, electrochemical capacitor C1 negativing ending grounding, and voltage stabilizing didoe D1 is in parallel with electrochemical capacitor C1;
Described signal amplification unit comprises amplifier U1A, described amplifier U1A the 3rd pin is connected with resistance R3, amplifier U1A the 2nd pin is connected with amplifier U1A the 1st pin by adjustable resistance VR1, simultaneously, amplifier U1A the 2nd pin is connected with resistance R4, resistance R4 other end ground connection, amplifier U1A the 1st pin is connected with voltage comparison unit;
Described voltage comparison unit comprises amplifier U2A, 3rd pin of amplifier U2A is connected with amplifier U1A the 1st pin, 2nd pin of amplifier U2A is connected with resistance R5 and resistance R6 respectively, the resistance R5 other end is connected with power supply VCC, the resistance R6 other end and ground connection, the 1st pin of amplifier U2A is connected with resistance R7, and the resistance R7 other end is connected with power supply VCC, 1st pin of amplifier U2A is connected from lock unit with winding displacement
Described winding displacement comprises resistance R8 from lock unit, described resistance R8 one end is connected with the 1st pin of amplifier U2A, the other end is connected with resistance R10 and triode Q2 base stage respectively, triode Q2 collector electrode is connected by resistance R9 with the base stage of triode Q1, the emitter of triode Q1 is connected with power supply VCC, the collector electrode of triode Q1 is connected with the resistance R10 other end, described triode Q2 emitter is connected with relay K 1 the 2nd pin, and relay K 1 the 2nd pin ground connection, the collector electrode of triode Q1 is connected with relay K 1 the 1st pin, and diode positive ending grounding, negative terminal is connected with relay K 1 the 1st pin, relay K 1 the 3rd pin is connected with winding displacement S3 the 2nd pin, winding displacement S3 the 1st pin is connected with winding displacement S2 the 2nd pin, winding displacement S2 the 1st pin is connected with relay K 1 the 5th pin.
Further, described amplifier U1A model is: LM385.
Further, described amplifier U2A model is: LM393.
Further, triode Q1 model is: C8550.
Further, triode Q2 model is: C8050.
The advantage that the utility model has and good effect are: owing to adopting technique scheme, protect sampled signal, add C1 simultaneously and prevent interference, improve the accuracy of signal, bronze drum voltage compare provides signal for driving self-locking, makes corresponding actions, greatly improves the protectiveness of equipment; There is structure simple, the advantages such as processing cost is low, service life of equipment is long.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is circuit structure diagram of the present utility model
Embodiment
As shown in Figure 1-2, technical scheme be: a kind of overcurrent protection module of the band self-locking for regulator cubicle, comprise sampling protected location, signal amplification unit, voltage comparison unit and winding displacement from lock unit, described sampled signal carries out sampling protection to load, again sampled signal is transferred to signal amplification unit to amplify sampled signal, then the sampled signal after amplification is passed to voltage comparison unit, by exporting different comparison values, and comparison value is passed to winding displacement and realize winding displacement and self-locking from lock unit;
Described sampling protected location comprises load S1, described load S1 is connected with power supply VCC, and described load S1 connects with resistance R1, resistance R1 is connected with resistance R2 and resistance R3 respectively, described resistance R2 other end ground connection, resistance R3 is connected with electrochemical capacitor C1 anode and signal amplification unit respectively, electrochemical capacitor C1 negativing ending grounding, and voltage stabilizing didoe D1 is in parallel with electrochemical capacitor C1;
Described signal amplification unit comprises amplifier U1A, described amplifier U1A the 3rd pin is connected with resistance R3, amplifier U1A the 2nd pin is connected with amplifier U1A the 1st pin by adjustable resistance VR1, simultaneously, amplifier U1A the 2nd pin is connected with resistance R4, resistance R4 other end ground connection, amplifier U1A the 1st pin is connected with voltage comparison unit;
Described voltage comparison unit comprises amplifier U2A, 3rd pin of amplifier U2A is connected with amplifier U1A the 1st pin, 2nd pin of amplifier U2A is connected with resistance R5 and resistance R6 respectively, the resistance R5 other end is connected with power supply VCC, the resistance R6 other end and ground connection, the 1st pin of amplifier U2A is connected with resistance R7, and the resistance R7 other end is connected with power supply VCC, 1st pin of amplifier U2A is connected from lock unit with winding displacement
Described winding displacement comprises resistance R8 from lock unit, described resistance R8 one end is connected with the 1st pin of amplifier U2A, the other end is connected with resistance R10 and triode Q2 base stage respectively, triode Q2 collector electrode is connected by resistance R9 with the base stage of triode Q1, the emitter of triode Q1 is connected with power supply VCC, the collector electrode of triode Q1 is connected with the resistance R10 other end, described triode Q2 emitter is connected with relay K 1 the 2nd pin, and relay K 1 the 2nd pin ground connection, the collector electrode of triode Q1 is connected with relay K 1 the 1st pin, and diode positive ending grounding, negative terminal is connected with relay K 1 the 1st pin, relay K 1 the 3rd pin is connected with winding displacement S3 the 2nd pin, winding displacement S3 the 1st pin is connected with winding displacement S2 the 2nd pin, winding displacement S2 the 1st pin is connected with relay K 1 the 5th pin.
In in this enforcement, described amplifier U1A model is: LM385; Described amplifier U2A model is: LM393; Triode Q1 model is: C8550; Triode Q2 model is: C8050.
In sampling protected location; load S1 and resistance R1 connects; both electric currents are equal, and the voltage on resistance R2 changes along with the electric current of load, and electric current is large; the voltage at R2 two ends is also large; meanwhile, resistance R3 and voltage stabilizing didoe D1 forms cloud sail overprotection circuit, prevents too high voltage from entering amplifier and causing amplifier to be damaged; wherein, electrochemical capacitor C1 prevents from disturbing use.
Because the signal of sampling is very little, so need signal amplification unit to amplify it, multiplication factor is determined by adjustable resistance VR1 and resistance R4.
Sampled signal after amplification is compared by voltage comparison unit, thus controls the action of rear class.
If what voltage comparison unit exported is guard signal, then drives protected location to work always, start shooting again until cut off the electricity supply.Play the effect of overcurrent protection thus.
Above an embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (3)
1. the overcurrent protection module for the band self-locking of regulator cubicle, comprise sampling protected location, signal amplification unit, voltage comparison unit and winding displacement from lock unit, it is characterized in that: described sampled signal carries out sampling protection to load, again sampled signal is transferred to signal amplification unit to amplify sampled signal, then the sampled signal after amplification is passed to voltage comparison unit, by exporting different comparison values, and comparison value is passed to winding displacement and realize winding displacement and self-locking from lock unit;
Described sampling protected location comprises load S1, described load S1 is connected with power supply VCC, and described load S1 connects with resistance R1, resistance R1 is connected with resistance R2 and resistance R3 respectively, described resistance R2 other end ground connection, resistance R3 is connected with electrochemical capacitor C1 anode and signal amplification unit respectively, electrochemical capacitor C1 negativing ending grounding, and voltage stabilizing didoe D1 is in parallel with electrochemical capacitor C1;
Described signal amplification unit comprises amplifier U1A, described amplifier U1A the 3rd pin is connected with resistance R3, amplifier U1A the 2nd pin is connected with amplifier U1A the 1st pin by adjustable resistance VR1, simultaneously, amplifier U1A the 2nd pin is connected with resistance R4, resistance R4 other end ground connection, amplifier U1A the 1st pin is connected with voltage comparison unit;
Described voltage comparison unit comprises amplifier U2A, 3rd pin of amplifier U2A is connected with amplifier U1A the 1st pin, 2nd pin of amplifier U2A is connected with resistance R5 and resistance R6 respectively, the resistance R5 other end is connected with power supply VCC, the resistance R6 other end and ground connection, the 1st pin of amplifier U2A is connected with resistance R7, and the resistance R7 other end is connected with power supply VCC, 1st pin of amplifier U2A is connected from lock unit with winding displacement
Described winding displacement comprises resistance R8 from lock unit, described resistance R8 one end is connected with the 1st pin of amplifier U2A, the other end is connected with resistance R10 and triode Q2 base stage respectively, triode Q2 collector electrode is connected by resistance R9 with the base stage of triode Q1, the emitter of triode Q1 is connected with power supply VCC, the collector electrode of triode Q1 is connected with the resistance R10 other end, described triode Q2 emitter is connected with relay K 1 the 2nd pin, and relay K 1 the 2nd pin ground connection, the collector electrode of triode Q1 is connected with relay K 1 the 1st pin, and diode positive ending grounding, negative terminal is connected with relay K 1 the 1st pin, relay K 1 the 3rd pin is connected with winding displacement S3 the 2nd pin, winding displacement S3 the 1st pin is connected with winding displacement S2 the 2nd pin, winding displacement S2 the 1st pin is connected with relay K 1 the 5th pin,
Described amplifier U1A model is: LM385; Described amplifier U2A model is: LM393.
2. the overcurrent protection module of a kind of band self-locking for regulator cubicle according to claim 1, is characterized in that: triode Q1 model is: C8550.
3. the overcurrent protection module of a kind of band self-locking for regulator cubicle according to claim 1, is characterized in that: triode Q2 model is: C8050.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520223424.4U CN204597447U (en) | 2015-04-10 | 2015-04-10 | A kind of overcurrent protection module of the band self-locking for regulator cubicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520223424.4U CN204597447U (en) | 2015-04-10 | 2015-04-10 | A kind of overcurrent protection module of the band self-locking for regulator cubicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204597447U true CN204597447U (en) | 2015-08-26 |
Family
ID=53933561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520223424.4U Expired - Fee Related CN204597447U (en) | 2015-04-10 | 2015-04-10 | A kind of overcurrent protection module of the band self-locking for regulator cubicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204597447U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932636A (en) * | 2016-06-13 | 2016-09-07 | 国家电网公司 | Overcurrent protection circuit of power-frequency withstand voltage test |
| CN108808620A (en) * | 2018-06-29 | 2018-11-13 | 徐州凯思特机电科技有限公司 | A kind of current foldback circuit with self-locking function |
-
2015
- 2015-04-10 CN CN201520223424.4U patent/CN204597447U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932636A (en) * | 2016-06-13 | 2016-09-07 | 国家电网公司 | Overcurrent protection circuit of power-frequency withstand voltage test |
| CN108808620A (en) * | 2018-06-29 | 2018-11-13 | 徐州凯思特机电科技有限公司 | A kind of current foldback circuit with self-locking function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204008753U (en) | Micro-overcurrent protection system in a kind of micro-resistance test | |
| CN102684146A (en) | Zero-lacking alarm protective circuit of three-phase voltage stabilizer | |
| CN204835697U (en) | Preferred power supply switching circuit of voltage | |
| CN204597447U (en) | A kind of overcurrent protection module of the band self-locking for regulator cubicle | |
| CN204205306U (en) | Based on the Domestic distributing box of mobile module remote monitoring | |
| CN204882821U (en) | Killer switch state detection circuitry | |
| CN203324854U (en) | Heat tracing cable control system of common enclosure bus | |
| CN202678082U (en) | Electronic transformer collector with overcurrent and overvoltage prevention function | |
| CN205725459U (en) | A kind of self-adaption switch electric power source flow equalizing circuit | |
| CN207977724U (en) | A kind of fire-fighting two lines bus short-circuit protection circuit of hand-held encoder | |
| CN107134982A (en) | Increase the device of op-amp input voltage collection compensation offset voltage | |
| CN202614719U (en) | Amplifying circuit for carbon monoxide sensor | |
| CN206041485U (en) | Electrical safety protection circuit of battery | |
| CN205610081U (en) | Medium voltage switchgear | |
| CN202797906U (en) | Battery overcharge protection system | |
| CN203596599U (en) | Digital direct-current circuit breaker | |
| CN202602246U (en) | Zero line deficiency alarming and protecting circuit of three-phase voltage stabilizer | |
| CN203164662U (en) | Isolated inverse-amplification analog output circuit | |
| CN203551631U (en) | Automatic switching circuit used in insulation monitoring of dc power supply | |
| CN204481699U (en) | The simple power circuit of a kind of structure | |
| CN205693173U (en) | A kind of low pressure large screen display AC switch cubicle | |
| CN104818487B (en) | Interruptedly supplying power Switching Power Supply Combined constant potentiometer | |
| CN204925294U (en) | Be suitable for 10 kilovolts of warning device of trouble for distribution lines | |
| CN206461340U (en) | A kind of DC over-voltage protection circuit | |
| CN204349510U (en) | There is the quick charger of temperature control loops |
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: 20150826 Termination date: 20160410 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |