CN201541115U - Intelligent controller with voltage protection module - Google Patents
Intelligent controller with voltage protection module Download PDFInfo
- Publication number
- CN201541115U CN201541115U CN2009202505310U CN200920250531U CN201541115U CN 201541115 U CN201541115 U CN 201541115U CN 2009202505310 U CN2009202505310 U CN 2009202505310U CN 200920250531 U CN200920250531 U CN 200920250531U CN 201541115 U CN201541115 U CN 201541115U
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Abstract
The utility model relates to an intelligent controller with a voltage protection module. The three-phase voltage of system is divided into three paths, each of which is connected with the positive phase input end of a high precision voltage transformer through a resistor; a UN is divided into three paths respectively connected with the negative phase input end of three high precision voltage transformers; the other resistor is connected between the positive phase output end and the negative phase output end of the voltage transformer; the negative phase output end is connected with the earth potential of the intelligent controller; the positive output end is connected with the input end of a voltage follower; and the output end of the voltage follower is connected with the I/O end of a microprocessor. Since the three-phase voltage of system respectively passes through two resistors and voltage transformers and then converts large voltage signals into small current signals so as to be converted into small voltage signals, and the signals are input in the microprocessor for processing through the voltage follower so that the brake separating mechanism of a circuit breaker works for the output signals without the range of setting value. The circuit principle is simple, accurate, and energy-saving by converting large signals into small signals, and the circuit breaker can have voltage protection function just by using a small amount of electron devices.
Description
Technical field
The utility model belongs to a kind of low-voltage circuit breaker, particularly relates to a kind of intelligent controller that has the voltage protection module.
Background technology
At present along with various power consumption equipment functions are more and more stronger; power consumption equipment requires also more and more higher to the protection of self; the raising of automaticity requires again the various parameters of electric power of power consumption equipment in the electrical network are imported into host computer, so that system is in time dispatched simultaneously.This just needs low-voltage circuit breaker also will possess the various functions of energy measurement parameters of electric power.Traditional low-voltage circuit breaker only has overcurrent and residual current protecting, can not better realize the requirement of modern power utilization network.
Summary of the invention
The utility model provides a kind of intelligent controller that has the voltage protection module for solving the technical problem that exists in the known technology.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: the phase voltage UA of system, UB, UC divide three the tunnel each receive the normal phase input end of high-accuracy voltage instrument transformer (U1) through a resistance (R1), UN divides three tunnel inverting inputs of receiving three high-accuracy voltage instrument transformers (U1), connect another resistance (R2) between voltage transformer (U1) positive output end and the reversed-phase output, reversed-phase output connects the intelligent controller earth potential simultaneously, positive output end is received a voltage follower (U2) input, and voltage follower (U2) output is received the I/O end of microprocessor (U3).
Advantage and the good effect that the utlity model has are: owing to adopt the phase voltage UA of system, UB, UC to divide three tunnel each process resistance R 1 and voltage transformer U1 to convert big voltage signal to little current signal, convert current signal to little voltage signal through another resistance R 2 then, behind voltage follower U2, little voltage signal is input to microprocessor U3.Microprocessor U3 carries out logic determines by the voltage signal of input is handled with the voltage setting value, and not in the setting value scope, microprocessor drives breaker open operation mechanism with output drive signal to magnetic flow convertor, thereby realizes voltage protection.This circuit theory is simply accurate, converts large-signal to small-signal and has energy-conserving action, only uses a little electrons device can reach the voltage protection function of realization to circuit breaker.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
As shown in Figure 1, the phase voltage UA of system, UB, UC divide three the tunnel each receive the normal phase input end of high-accuracy voltage instrument transformer U1 through a resistance R 1, UN divides three tunnel inverting inputs of receiving three high-accuracy voltage instrument transformer U1, connect a resistance R 2 between voltage transformer U1 positive output end and the reversed-phase output, reversed-phase output connects the intelligent controller earth potential simultaneously, positive output end is received a voltage follower U2 input, and voltage follower U2 output is received the I/O end of microprocessor U3.
The course of work is: the phase voltage UA of system, UB, UC divide three tunnel each process resistance R 1 and voltage transformer U1 to convert big voltage signal to little current signal, convert current signal to little voltage signal through another resistance R 2 then, behind voltage follower U2, little voltage signal is input to microprocessor U3.Microprocessor U3 is by handling the voltage signal of input; carry out logic determines with the voltage setting value: for wherein not in the setting value scope; microprocessor drives breaker open operation mechanism with output drive signal to magnetic flow convertor, thereby realizes voltage protection.
Claims (1)
1. intelligent controller that has the voltage protection module; it is characterized in that: the phase voltage UA of system; UB; UC divide three the tunnel each receive the normal phase input end of high-accuracy voltage instrument transformer (U1) through a resistance (R1); UN divides three tunnel inverting inputs of receiving three high-accuracy voltage instrument transformers (U1); connect another resistance (R2) between voltage transformer (U1) positive output end and the reversed-phase output; reversed-phase output connects the intelligent controller earth potential simultaneously; positive output end is received a voltage follower (U2) input, and voltage follower (U2) output is received the I/O end of microprocessor (U3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202505310U CN201541115U (en) | 2009-11-19 | 2009-11-19 | Intelligent controller with voltage protection module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202505310U CN201541115U (en) | 2009-11-19 | 2009-11-19 | Intelligent controller with voltage protection module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201541115U true CN201541115U (en) | 2010-08-04 |
Family
ID=42592573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202505310U Expired - Fee Related CN201541115U (en) | 2009-11-19 | 2009-11-19 | Intelligent controller with voltage protection module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201541115U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166183A (en) * | 2013-01-29 | 2013-06-19 | 广东志高空调有限公司 | Protection circuit |
| CN103247489A (en) * | 2013-05-16 | 2013-08-14 | 天津市百利电气有限公司 | Circuit breaker electronic release free of grounding current sampling special instrument transformer |
| CN106558991A (en) * | 2015-09-30 | 2017-04-05 | 佳能株式会社 | Power supply device and image processing system |
-
2009
- 2009-11-19 CN CN2009202505310U patent/CN201541115U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166183A (en) * | 2013-01-29 | 2013-06-19 | 广东志高空调有限公司 | Protection circuit |
| CN103166183B (en) * | 2013-01-29 | 2015-04-08 | 广东志高空调有限公司 | Protection circuit |
| CN103247489A (en) * | 2013-05-16 | 2013-08-14 | 天津市百利电气有限公司 | Circuit breaker electronic release free of grounding current sampling special instrument transformer |
| CN103247489B (en) * | 2013-05-16 | 2015-11-04 | 天津市百利电气有限公司 | The circuit breaker electronic release of no ground current sample Special mutual-inductor |
| CN106558991A (en) * | 2015-09-30 | 2017-04-05 | 佳能株式会社 | Power supply device and image processing system |
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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: 20100804 Termination date: 20141119 |
|
| EXPY | Termination of patent right or utility model |