CN201490686U - Self-recover overvoltage-undervoltage protector - Google Patents

Self-recover overvoltage-undervoltage protector Download PDF

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Publication number
CN201490686U
CN201490686U CN2009201594726U CN200920159472U CN201490686U CN 201490686 U CN201490686 U CN 201490686U CN 2009201594726 U CN2009201594726 U CN 2009201594726U CN 200920159472 U CN200920159472 U CN 200920159472U CN 201490686 U CN201490686 U CN 201490686U
Authority
CN
China
Prior art keywords
circuit
microprocessor
latching relay
magnetic latching
voltage
Prior art date
Application number
CN2009201594726U
Other languages
Chinese (zh)
Inventor
王加法
郑佳利
Original Assignee
杭州之江开关股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 杭州之江开关股份有限公司 filed Critical 杭州之江开关股份有限公司
Priority to CN2009201594726U priority Critical patent/CN201490686U/en
Application granted granted Critical
Publication of CN201490686U publication Critical patent/CN201490686U/en

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Abstract

The utility model discloses a self-recover overvoltage-undervoltage protector used for a lighting system, wherein the control circuit thereof consists of a power supply circuit, a voltage sampling circuit, a microprocessor, a working status indication circuit, a driver circuit, a magnetic latching relay and an energy-storage filter capacitor; the adoption of the microprocessor for voltage detection and control leads to simple adjustment of pick-up voltage value and delay time and high precision, and can effectively prevent the subsequent electrical equipment from being damaged by over voltage or under voltage; the adoption of the magnetic latching relay as an execution element leads the normal operation almost not to consume electricity, thus saving energy and protecting the environment; after the protective action, when the power supply is recovered to normal voltage range, the power supply is automatically switched on, thus ensuring continuity of the power supply and the quality of the power supply.

Description

Self-resetting type overvoltage/undervoltage protector
Technical field:
The utility model relates to a kind of building electric apparatus, belongs to the low voltage electrical apparatus technology field.
Background technology:
In the civilian power supply in architectural electricity and rural area, often take place because the single phase power supply overvoltage that center line broken string, phase line and center line connect instead and the serious imbalance of threephase load causes or under-voltage causes various electrical equipment to damage.Such existing protector has three kinds of forms: a kind of is neutral conductor interrupted protective equipment, but such protector zero potential benchmark is difficult to get, and makes such protector often produce misoperation, poor reliability; Second kind is to increase overvoltage/undervoltage protection release on the circuit breaker basis, can not runback after such protector protection action, user's manual operation, and make breaker closing, use inconvenience, influenced user's power supply continuity; The third is the overvoltage/undervoltage protector that adopts common relay, though can reach the runback function, owing to adopt common relay, makes rated operational current can only accomplish 40A and below the 40A, and relay switches on for a long time, and power consumption is big, temperature rise, and reliability is relatively poor.
Summary of the invention:
The purpose of this utility model is at above-mentioned shortcoming, and a kind of self-resetting type overvoltage/undervoltage protector is provided.
Technical solution of the present utility model is: adopt microprocessor to detect, control, magnetic latching relay is as executive component; Its control circuit is made up of power circuit, voltage sampling circuit, microprocessor, operating state indicating circuit, drive circuit, magnetic latching relay, energy storage filter capacitor.The power circuit input is a power inleting terminal, and the output DC source is microprocessor, drive circuit, magnetic latching relay, the power supply of energy storage filter capacitor.The voltage sampling circuit input is a line voltage, and output voltage signal is given microprocessor.Microprocessor is exported two groups of signals, and one group is working state signal, exports to the operating state indicating circuit, and another road is a drive signal, exports to drive circuit, drives magnetic latching relay by drive circuit.Storage capacitor provides the instantaneous operation energy for magnetic latching relay.
The power circuit 1 of self-resetting type overvoltage/undervoltage protector is by decompression capacitor C4, discharge resistance R5, and rectifier bridge VD1, filter capacitor C2, resistance R 4, R5,, voltage-stabiliser tube V1, triode V10, three terminal regulator N1 forms.
Voltage sampling circuit 1 is by resistance R 14, R9 bleeder circuit, filter capacitor C5, and voltage-stabiliser tube VW6, diode V13 forms.
Operating state indicating circuit 4 is by light-emitting diode L1, L2, L3, resistance R 4, R5, R8, and triode V7, V8 form.
Major advantage of the present utility model is: adopt microprocessor voltage detecting and control, operation voltage value, delay time adjustment are simple, and the precision height effectively protects follow-up electrical equipment to avoid overvoltage, under voltage causes damaging.The employing magnetic latching relay makes and moves power consumption hardly at ordinary times as executive component, energy-conserving and environment-protective, and after the protection action, in power up arrives the normal voltage scope, automatic energized, the continuity of assurance power supply has ensured power supply quality.
Description of drawings
Fig. 1 is a theory diagram of the present utility model
Wherein 1 is power circuit, the 2nd, and voltage sampling circuit, the 3rd, microprocessor, 4 operating state indicating circuits, the 5th, drive circuit, the 6th, magnetic latching relay, the 7th, energy storage filter capacitor.
Embodiment
Self-resetting type overvoltage/undervoltage protector adopts microprocessor to detect, control, and magnetic latching relay is as executive component; Form by power circuit, voltage sampling circuit, microprocessor, operating state indicating circuit, drive circuit, magnetic latching relay, energy storage filter capacitor.The power circuit input is a power inleting terminal, and the output DC source is microprocessor, drive circuit, magnetic latching relay, the power supply of energy storage filter capacitor.The voltage sampling circuit input is a line voltage, and output voltage signal is given microprocessor.Microprocessor is exported two groups of signals, and one group is working state signal, exports to the operating state indicating circuit, and another road is a drive signal, exports to drive circuit, drives magnetic latching relay by drive circuit.Storage capacitor provides the instantaneous operation energy for magnetic latching relay.
Power circuit 1 is by decompression capacitor C2, discharge resistance R1, and rectifier bridge VD1, filter capacitor C3, resistance R 2, R3, voltage-stabiliser tube V1, triode Q3, three terminal regulator N1 forms.By resistance R 2, R3, the shunt regulating circuit that triode Q3 constitutes is connected with drive circuit 5 in the power circuit 1, and three terminal regulator N1 output is connected with microprocessor 3.
Voltage sampling circuit 2 is by resistance R 14, R9 bleeder circuit, filter capacitor C5, and voltage-stabiliser tube V2, diode V4 forms.
Drive circuit 5 is by resistance R 10, R11, R6, R7, R12, R13, and triode Q4, Q5, Q6, Q7 form.Constitute bridge drive circuit by triode Q4, Q5, Q6, Q7 in the drive circuit 5, drive magnetic latching relay 6.
Operating state indicating circuit 4 is by light-emitting diode L1, L2, L3, resistance R 4, R5, R8, and triode Q1, Q2 form
Below sketch the operation principle of self-resetting type overvoltage/undervoltage protector:
After electrical network powers on, microprocessor is by voltage sampling circuit continuous detecting line voltage, when detecting line voltage in normal range (NR) be, export two groups of signals, export to condition indication circuit for one group, normal indicator light is bright, and another road output adhesive pulse signal is given drive circuit, drive the magnetic latching relay adhesive by drive circuit, connect major loop.When the line voltage overvoltage or when under-voltage; microprocessor detects line voltage overvoltage or under-voltage by voltage sampling circuit; export two groups of signals; export to condition indication circuit for one group; corresponding overvoltage or under-voltage indicator light are bright, and another road output release pulses signal is given drive circuit, drives magnetic latching relay by drive circuit and discharges; cut off major loop, reach overvoltage/undervoltage protection purpose.When line voltage recovers just often, microprocessor detects line voltage by voltage sampling circuit and recovers normal, and normal signal is exported to condition indication circuit, and overvoltage or under-voltage indicator light go out, normal indicator light is bright, and enter 3min time-delay timing, and voltage is all normal in the 3min delay time, and output adhesive pulse signal is given drive circuit, drive the magnetic latching relay adhesive by drive circuit, connect major loop, restore electricity, reach the runback purpose.The effect of storage capacitor is to provide the instantaneous operation energy for magnetic latching relay.

Claims (3)

1. self-resetting type overvoltage/undervoltage protector; it is characterized in that this self-resetting type overvoltage/undervoltage protector adopts microprocessor to detect; control; magnetic latching relay is as executive component; its control circuit is by power circuit (1); voltage sampling circuit (2); microprocessor (3); operating state indicating circuit (4); drive circuit (5); magnetic latching relay (6); energy storage filter capacitor (7) is formed; power circuit (1) input is a power inleting terminal; export to microprocessor; drive circuit; magnetic latching relay; the storage capacitor power supply; voltage sampling circuit (2) input is a power inleting terminal; output removes microprocessor (3); for microprocessor provides the sampled voltage signal; two groups of signals of microprocessor (3) output; one group is removed operating state indicating circuit (4); another group is given drive circuit (5); drive magnetic latching relay by drive circuit, energy storage filter capacitor (7) provides instantaneous energy for magnetic latching relay.
2. the described self-resetting type overvoltage/undervoltage of root a tree name claim 1 protector circuit; it is characterized in that power circuit (1) is by decompression capacitor C2; discharge resistance R1, rectifier bridge VD1, filter capacitor C3; resistance R 2, R3; triode Q3, three terminal regulator N1 form, in the power circuit (1) by resistance R 2, R3; the shunt regulating circuit that triode Q3 constitutes is connected with drive circuit (5), and three terminal regulator N1 output is connected with microprocessor (3).
3. self-resetting type overvoltage/undervoltage protector circuit according to claim 1; it is characterized in that drive circuit (5) is by resistance R 10, R11, R6, R7, R12, R13; triode Q4, Q5, Q6, Q7 form; drive circuit constitutes bridge drive circuit by triode Q4, Q5, Q6, Q7 in (5), drives magnetic latching relay (6).
CN2009201594726U 2009-07-11 2009-07-11 Self-recover overvoltage-undervoltage protector CN201490686U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201594726U CN201490686U (en) 2009-07-11 2009-07-11 Self-recover overvoltage-undervoltage protector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201594726U CN201490686U (en) 2009-07-11 2009-07-11 Self-recover overvoltage-undervoltage protector

Publications (1)

Publication Number Publication Date
CN201490686U true CN201490686U (en) 2010-05-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009201594726U CN201490686U (en) 2009-07-11 2009-07-11 Self-recover overvoltage-undervoltage protector

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Country Link
CN (1) CN201490686U (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102487188A (en) * 2010-12-03 2012-06-06 北京人民电器厂有限公司 Resettable overvoltage and under-voltage protection switch
CN102751694A (en) * 2011-04-22 2012-10-24 北京维通利电气有限公司 Device and method for controlling neutral wire breaking protection
CN103311884A (en) * 2013-04-23 2013-09-18 上海良信电器股份有限公司 Non-stick overvoltage and under-voltage protector with leakage protection function
CN103762549A (en) * 2013-12-31 2014-04-30 安徽鑫龙电器股份有限公司 Self-reset overvoltage and undervoltage protector
CN103779831A (en) * 2014-02-10 2014-05-07 杨新宇 Self-recovery over-voltage and under-voltage protection device based on single-chip microcomputer
CN104242272A (en) * 2014-09-23 2014-12-24 国家电网公司 Power consumption management device
CN104092183B (en) * 2014-07-17 2016-08-24 无锡智卓电气有限公司 A kind of recovery formula overvoltage-undervoltage protector automatically
EP3026772A4 (en) * 2013-07-25 2017-03-08 SK Innovation Co., Ltd. Battery overcharge preventing device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102487188A (en) * 2010-12-03 2012-06-06 北京人民电器厂有限公司 Resettable overvoltage and under-voltage protection switch
CN102751694A (en) * 2011-04-22 2012-10-24 北京维通利电气有限公司 Device and method for controlling neutral wire breaking protection
CN103311884A (en) * 2013-04-23 2013-09-18 上海良信电器股份有限公司 Non-stick overvoltage and under-voltage protector with leakage protection function
US10153646B2 (en) 2013-07-25 2018-12-11 Sk Innovation Co., Ltd. Battery overcharge preventing device
EP3026772A4 (en) * 2013-07-25 2017-03-08 SK Innovation Co., Ltd. Battery overcharge preventing device
CN103762549A (en) * 2013-12-31 2014-04-30 安徽鑫龙电器股份有限公司 Self-reset overvoltage and undervoltage protector
CN103779831A (en) * 2014-02-10 2014-05-07 杨新宇 Self-recovery over-voltage and under-voltage protection device based on single-chip microcomputer
CN103779831B (en) * 2014-02-10 2016-11-23 西安阿普顿电力技术有限公司 SCM Based three-phase self-resetting type over voltage protector
CN104092183B (en) * 2014-07-17 2016-08-24 无锡智卓电气有限公司 A kind of recovery formula overvoltage-undervoltage protector automatically
CN104242272A (en) * 2014-09-23 2014-12-24 国家电网公司 Power consumption management device

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100526

Termination date: 20140711

EXPY Termination of patent right or utility model