CN205595761U - Domestic electric leakage overvoltage protector - Google Patents
Domestic electric leakage overvoltage protector Download PDFInfo
- Publication number
- CN205595761U CN205595761U CN201620435956.9U CN201620435956U CN205595761U CN 205595761 U CN205595761 U CN 205595761U CN 201620435956 U CN201620435956 U CN 201620435956U CN 205595761 U CN205595761 U CN 205595761U
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- CN
- China
- Prior art keywords
- resistance
- connects
- earth leakage
- lock switch
- total lock
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- 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
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Abstract
Domestic electric leakage overvoltage protector belongs to the electric automatization field, the utility model discloses a solve the problem that traditional earth leakage protection monitor cell does not have simple structure's overvoltage protection. The utility model discloses an earth leakage protection monitor cell, release, current transformer Q1, switch T1, T2, resistance R1~R3, electric capacity C1, mistake pressure finger show lamp L1 and transient state suppression voltage diode TVS, the former limit the coil induction of the Q1 signal that leaks electricity, Q1 secondary winding connects earth leakage protection monitor cell's input, the release coil is connected to the output, and the actuating mechanism of release connects disconnection T1's control end, series resistance R3 and T2 between live wire L and the zero line N, live wire L connects the TVS positive pole, and R1 one end, R2 one end and C1 one end are connected simultaneously to the TVS negative pole, the C1 other end is connected to the R1 other end, and L1 one end is connected to the R2 other end, and the zero line N between T1 and the load electrical apparatus is connected simultaneously to the L1 other end and the C1 other end.
Description
Technical field
This utility model relates to a kind of electric protective device, belongs to electric automatization field.
Background technology
In various civilian electric power networks, earth leakage protective device is a kind of conventional equipment, its role is to the electric leakage in electrical network existing
As being monitored, once there is leaky, by execution unit, electrical network can be carried out open circuit, thus various electric power are filled
Put the phenomenons such as electric leakage, human electric shock to prevent in time.
Traditional Household electricity leakage protection device switch only preferentially carries out the protection of domestic branch circuit load electrical equipment, for the mistake on electrical network main line
Pressure fault considers limited, and many local due to electrical network power supply instability or three-phase electricity misphase, (380V power current is connect
Entering 220V household electric) example that causes household electrical appliance overvoltage to be burnt is the most.And the design structure of overvoltage protector is the most relative
Complicated.
Summary of the invention
This utility model purpose is not have the asking of overvoltage protection of simple in construction to solve conventional earth leakage monitoring for protection unit
Topic, it is provided that a kind of domestic electric leakage overvoltage protector.
Domestic described in the utility model electric leakage overvoltage protector includes earth leakage protective monitoring means, electrical apparatus release, current transformer
Q1, total lock switch T1, earth leakage protective device test switch T2, resistance R1, resistance R2, resistance R3, electric capacity C1, mistake
Pressure display lamp L1 and transient state suppression voltage diode TVS；Load appliance connects 220V alternating current by total lock switch T1
Source；
The primary coil of current transformer Q1 senses the line current signal between total lock switch T1 and load appliance, electric current
The secondary coil two ends of transformer Q1 connect two inputs of earth leakage protective monitoring means；The two of earth leakage protective monitoring means
Individual outfan connects the two ends of trip coil, and the actuator of electrical apparatus release connects the control end disconnecting total lock switch T1；
Live wire L between total lock switch T1 and load appliance connects one end of resistance R3, and the other end of resistance R3 connects
One end of earth leakage protective device test switch T2, the other end of earth leakage protective device test switch T2 connects total lock switch T1 and bears
Carry the zero line N between electrical equipment；
The anode entering electricity end live wire L connection transient state suppression voltage diode TVS of 220V alternating current power supply, transient state suppression voltage
The negative electrode of diode TVS is simultaneously connected with one end of resistance R1, one end of resistance R2 and one end of electric capacity C1；Resistance R1
The other end connect the other end of electric capacity C1, the other end of resistance R2 connects one end of overvoltage display lamp L1, and overvoltage indicates
The other end of lamp L1 and the other end of electric capacity C1 are simultaneously connected with the zero line N between total lock switch T1 and load appliance.
Advantage of the present utility model: this utility model has electric leakage and two kinds of functions of overvoltage protection simultaneously, and passes through display lamp
It is the switch trip that causes of that fault that prompting can be distinguished.Prevent owing to main line voltage is excessive, after TVS is punctured,
Owing to not knowing open circuit or overvoltage, after being playbacked by protector, burn electrical appliance.Simple in construction, respond well.
Accompanying drawing explanation
Fig. 1 is the structural representation of domestic described in the utility model electric leakage overvoltage protector.
Detailed description of the invention
Detailed description of the invention one: present embodiment is described below in conjunction with Fig. 1, domestic electric leakage overvoltage protection described in present embodiment
Device includes earth leakage protective monitoring means 1, electrical apparatus release 2, current transformer Q1, total lock switch T1, earth leakage protective device test
Switch T2, resistance R1, resistance R2, resistance R3, electric capacity C1, overvoltage display lamp L1 and transient state suppression voltage diode
TVS；Load appliance connects 220V alternating current power supply by total lock switch T1；
The primary coil of current transformer Q1 senses the line current signal between total lock switch T1 and load appliance, electric current
The secondary coil two ends of transformer Q1 connect two inputs of earth leakage protective monitoring means 1；Earth leakage protective monitoring means 1
Two outfans connect the two ends of electrical apparatus release 2 coils, the actuator of electrical apparatus release 2 connects the control disconnecting total lock switch T1
End processed；
Live wire L between total lock switch T1 and load appliance connects one end of resistance R3, and the other end of resistance R3 connects
One end of earth leakage protective device test switch T2, the other end of earth leakage protective device test switch T2 connects total lock switch T1 and bears
Carry the zero line N between electrical equipment；
The anode entering electricity end live wire L connection transient state suppression voltage diode TVS of 220V alternating current power supply, transient state suppression voltage
The negative electrode of diode TVS is simultaneously connected with one end of resistance R1, one end of resistance R2 and one end of electric capacity C1；Resistance R1
The other end connect the other end of electric capacity C1, the other end of resistance R2 connects one end of overvoltage display lamp L1, and overvoltage indicates
The other end of lamp L1 and the other end of electric capacity C1 are simultaneously connected with the zero line N between total lock switch T1 and load appliance.
Operation principle:
In present embodiment, earth leakage protective monitoring means 1 is prior art, the common earth leakage protective device that employing market is buied
Controlling part, its internal circuit structure need not be given at this.Total lock that closes switch T1, during load appliance electric leakage, will
Presenting abnormal curtage signal, the primary coil of current transformer Q1 senses this electric leakage signal, the secondary line of Q1
Circle has induced voltage and produces, and this voltage, will after the electronic circuit identifying processing in earth leakage protective monitoring means 1
Making electrical apparatus release 2 coil working, excise rapidly T1, main circuit disconnects.Earth leakage protective device test switch T2 presses, and is used for examining
Electric protection monitoring means 1 function of leaking hunting is the most normal.If earth leakage protective monitoring means 1 is working properly, when pressing T2,
Earth leakage protective monitoring means 1 meeting work, commands electrical apparatus release 2 action, cuts off main circuit.Be equivalent to short circuit be detected.
Present embodiment adds over-voltage protecting function, and TVS is the transient voltage suppressor diode newly increased, at ordinary times electrical network
Time voltage input is normal, transient voltage suppressor diode presents high-impedance state, is equivalent to open circuit, to earth leakage protective part
Structure does not impacts.When because accident causes voltage rising in electrical network, the two poles of the earth of TVS are by reverse transient state high-energy
During impact, the high impedance of its two interpolar, with the speed bearing 12 power second-times of 10, is become Low ESR, forms one by it
Big current loop, then the secondary coil of Q1 has induced voltage generation, and this voltage is through earth leakage protective monitoring means 1
In electronic circuit identifying processing after, electrical apparatus release 2 coil working will be made, excise rapidly T1, main circuit disconnects.
Resistance R1 with TVS connects and plays the effect of protection TVS, and after forming big current loop, R1 plays current limliting and makees
With.R1 and electric capacity C1 constitutes RC accumulator, when TVS presents low-resistance conducting state so that electric capacity C1 fills
Electricity, when electrical apparatus release 2 works, when cutting off power circuit, L1, C1, R2 together constitute discharge circuit, and electric capacity discharges,
Overvoltage display lamp L1 lights.Indicating this shutoff is to cause owing to voltage is excessive.
Claims (1)
1. domestic electric leakage overvoltage protector, it is characterised in that include earth leakage protective monitoring means (1), electrical apparatus release (2),
Current transformer Q1, total lock switch T1, earth leakage protective device test switch T2, resistance R1, resistance R2, resistance R3, electricity
Hold C1, overvoltage display lamp L1 and transient state suppression voltage diode TVS；Load appliance connects 220V by total lock switch T1
Alternating current power supply；
The primary coil of current transformer Q1 senses the line current signal between total lock switch T1 and load appliance, and electric current is mutual
The secondary coil two ends of sensor Q1 connect two inputs of earth leakage protective monitoring means (1)；Earth leakage protective monitoring means (1)
Two outfans connect the two ends of electrical apparatus release (2) coils, the actuator of electrical apparatus release (2) connects and disconnects total lock switch T1
Control end；
Live wire L between total lock switch T1 and load appliance connects one end of resistance R3, and the other end of resistance R3 connects leakage
One end of non-electricity protector test switch T2, the other end of earth leakage protective device test switch T2 connects total lock switch T1 and load
Zero line N between electrical equipment；
The anode entering electricity end live wire L connection transient state suppression voltage diode TVS of 220V alternating current power supply, transient state suppression voltage
The negative electrode of diode TVS is simultaneously connected with one end of resistance R1, one end of resistance R2 and one end of electric capacity C1；Resistance R1
The other end connect the other end of electric capacity C1, the other end of resistance R2 connects one end of overvoltage display lamp L1, and overvoltage indicates
The other end of lamp L1 and the other end of electric capacity C1 are simultaneously connected with the zero line N between total lock switch T1 and load appliance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620435956.9U CN205595761U (en) | 2016-05-13 | 2016-05-13 | Domestic electric leakage overvoltage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620435956.9U CN205595761U (en) | 2016-05-13 | 2016-05-13 | Domestic electric leakage overvoltage protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205595761U true CN205595761U (en) | 2016-09-21 |
Family
ID=56930867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620435956.9U Expired - Fee Related CN205595761U (en) | 2016-05-13 | 2016-05-13 | Domestic electric leakage overvoltage protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205595761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018188364A1 (en) * | 2017-04-12 | 2018-10-18 | 中山市开普电器有限公司 | Electromagnetic leakage protection circuit |
-
2016
- 2016-05-13 CN CN201620435956.9U patent/CN205595761U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018188364A1 (en) * | 2017-04-12 | 2018-10-18 | 中山市开普电器有限公司 | Electromagnetic leakage protection circuit |
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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: 20160921 Termination date: 20170513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |