CN205829133U - Earth leakage protective device voltage protection - Google Patents
Earth leakage protective device voltage protection Download PDFInfo
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- CN205829133U CN205829133U CN201620505677.5U CN201620505677U CN205829133U CN 205829133 U CN205829133 U CN 205829133U CN 201620505677 U CN201620505677 U CN 201620505677U CN 205829133 U CN205829133 U CN 205829133U
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Abstract
The utility model discloses a kind of earth leakage protective device voltage protection, it includes housing, is provided with three attaching plugs, is provided with voltage conversion circuit, comparator, short circuit relay in housing on housing；Two inputs of voltage conversion circuit electrically connect with fire line terminal and the zero terminal of three attaching plugs respectively, two outfans of voltage conversion circuit electrically connect with the input of comparator respectively, and two outfans of comparator electrically connect with the solenoid of short circuit relay respectively；The ground wire terminal of three attaching plugs and fire line terminal electrically connect with the one of short circuit relay group of normally opened terminal respectively.Advantage is: safety, science, the guarantee of intelligent power; can guarantee that electrical equipment do not burnt out by line voltage or input power source abnormality, burn, on fire etc.; prevent supply voltage shakiness from affecting performance and the life-span of electrical equipment, causing permanent damage, effectively protect the security of the lives and property of user.
Description
Technical field:
This utility model relates to a kind of voltage protection, particularly relates to a kind of earth leakage protective device electricity
Pressure protection device.
Background technology:
In daily life, working power is in use stablized by a lot of household electricity equipment
Property proposes the highest requirement.And due to the multiformity loaded in electrical network and complexity, can not keep away
The fluctuation causing line voltage exempted from.Due to the fluctuation of line voltage, electrical equipment can be given again
Cause unnecessary overvoltage, under-voltage phenomenon.Overtension can cause electric equipment aging, reduce
In service life, electrical equipment seriously can be made to burn, such as common bulb uses voltage to be frequently above 10%
Life-span of benefiting from only keep the 40% of rated voltage service life, when there is superpressure, filament
Directly burn, it is impossible to normally use, cause permanent damage.During brownout, electrical equipment cannot
Normal work, even cannot start, it is impossible to normally work.
Utility model content:
The purpose of this utility model is to provide a kind of when over-and under-voltage occurs in supply voltage, protects
Protecting device energy fast shut-off power supply automatically, reach to protect electrical appliance, prevent electrical fire, protection is raw
The earth leakage protective device voltage protection of life property safety.
This utility model is implemented by following technical scheme: earth leakage protective device voltage protection, its
Including housing, it is provided with three attaching plugs on the housing, in described housing, is provided with voltage
Change-over circuit, comparator, short circuit relay；Two inputs of described voltage conversion circuit divide
Not electrically connecting with fire line terminal and the zero terminal of described three attaching plugs, described voltage is changed
Two outfans of circuit input with described comparator respectively electrically connects, described comparator
Two outfans solenoid with described short circuit relay respectively electrically connects；Described three power supplys
The ground wire terminal of plug and described fire line terminal are normally opened with the one of described short circuit relay group respectively
Terminal electrically connects.
It is provided with reversing switch and forward and reverse display lamp on the housing, at described voltage conversion circuit
Two inputs and described fire line terminal and described zero terminal between be provided with described commutation and open
Close, two inputs of described reversing switch respectively with described fire line terminal and described zero terminal
Electrical connection, two outfans of described reversing switch respectively with two of described voltage conversion circuit
Input electrically connects；The instruction of described forward and reverse it is provided with between two outfans of described reversing switch
Lamp；Fire wire output end and described ground wire terminal at described reversing switch continue with described short circuit respectively
One group of normally opened terminal electrical connection of electrical equipment.
Advantage of the present utility model: safety, science, the guarantee of intelligent power, can guarantee that electrical equipment
Do not burnt out by line voltage or input power source abnormality, burn, on fire etc., prevent supply voltage
Shakiness affects performance and the life-span of electrical equipment, causes permanent damage, effectively protects the life of user
Life property safety.Perform fast response time, can come the most more according to the rated voltage of different electrical equipment
Change data, use simple and reliable, be inserted on any one socket with earth lead of load side,
Just can realize voltage protection, either old man, women and there is no any electrotechnics knowledge
People can use.
Accompanying drawing illustrates:
Fig. 1 is the overall structure schematic diagram of embodiment 1.
Fig. 2 is the circuit connection diagram of embodiment 1.
Fig. 3 is the overall structure schematic diagram of embodiment 2.
Fig. 4 is the circuit connection diagram of embodiment 2.
Housing 1, three attaching plugs 2, fire line terminal 21, zero terminal 22, ground wire terminals
23, voltage conversion circuit 3, sensor transformer 31, bridge rectifier 32, comparator 4,
Short circuit relay 5, reversing switch 6, forward and reverse display lamp 7, electric capacity of voltage regulation 8, energy-storage capacitor
9。
Detailed description of the invention:
Embodiment 1: as depicted in figs. 1 and 2, earth leakage protective device voltage protection, its bag
Include housing 1, housing 1 is provided with three attaching plugs 2, in housing 1, is provided with voltage turns
Change circuit 3, comparator 4, short circuit relay 5；Two inputs of voltage conversion circuit 3
Electrically connecting with fire line terminal 21 and the zero terminal 22 of three attaching plugs 2 respectively, voltage turns
Change two outfans of circuit 3 input respectively with comparator 4 to electrically connect, comparator 4
Two outfans solenoid with short circuit relay 5 respectively electrically connects；Three attaching plugs 2
Ground wire terminal 23 and fire line terminal 21 respectively with the one of short circuit relay 5 group of normally opened terminal electricity
Connect.
Job description: convert alternating current to unidirectional current, comparator by voltage conversion circuit 3
4 identify DC voltage size and compare with the setting value in comparator 4, work as DC voltage
When exceeding the set point value of comparator 4, i.e. alternating voltage is less than 198V or during more than 236V,
Comparator 4 controls the solenoid energising of short circuit relay 5, and short circuit relay 5 is by alternating current
Live wire and ground wire connect extremely short time, make earth leakage protective device trip, thus protection circuit.
Embodiment 2: earth leakage protective device voltage protection, it includes housing 1, at housing 1
It is provided with three attaching plugs 2, reversing switch 6 and forward and reverse display lamp 7, sets in housing 1
There are voltage conversion circuit 3, comparator 4, short circuit relay 5；Two of reversing switch 6 defeated
Enter end to electrically connect with fire line terminal 21 and zero terminal 22 respectively；At reversing switch 6 two
Forward and reverse display lamp 7 it is provided with between outfan；Voltage conversion circuit 3 includes sensor transformer 31
With bridge rectifier 32, two inputs of sensor transformer 31 respectively with reversing switch 6
The electrical connection of two outfans, two outfans of sensor transformer 31 respectively with bridge rectifier
Two input electrical connections of circuit 32；Two outfans of bridge rectifier 32 respectively with
The input electrical connection of comparator 4, between two outfans of bridge rectifier 32 also
Join two electric capacity of voltage regulation 8；Two outfans of comparator 4 respectively with the electricity of short circuit relay 5
Magnetic coil electrically connects, and is in series with energy-storage capacitor 9 at short circuit relay 5 outfan, it is ensured that short
The solenoid of contact relay 5 is energized pickup time；Reversing switch 6 fire wire output end and
Ground wire terminal 23 electrically connects with the one of short circuit relay 5 group of normally opened terminal respectively.
Job description: judged the both positive and negative polarity of alternating current by forward and reverse display lamp 7, opened by commutation
Close 6 to switch over, it is ensured that live wire and the ground wire of alternating current are normally opened with the one of short circuit relay 5 group
Terminal electrically connects；Alternating current after commutation is converted into unidirectional current by voltage conversion circuit 3, because of
Bridge rectifier 32 is output as intermittent continuous current electricity, so at the two of bridge rectifier 32
After individual outfan two electric capacity of voltage regulation 8 in parallel, bridge rectifier 32 is made to export stable DC
Electricity；Comparator 4 identifies DC voltage size and compares with the setting value in comparator 4,
When DC voltage exceedes the set point value of comparator 4, i.e. alternating voltage is less than 198V or super
When crossing 236V, comparator 4 controls the solenoid energising of short circuit relay 5, short circuit relay
Live wire and the ground wire of alternating current are connected the extremely short time by device 5, make earth leakage protective device trip, from
And protection circuit.
Claims (2)
1. earth leakage protective device voltage protection, it is characterised in that it includes housing, in institute
State housing and be provided with three attaching plugs, in described housing, be provided with voltage conversion circuit, compare
Device, short circuit relay；Two inputs of described voltage conversion circuit respectively with described three electricity
The fire line terminal of source plug and zero terminal electrical connection, two outputs of described voltage conversion circuit
End input with described comparator respectively electrically connect, and two outfans of described comparator are distinguished
Electrically connect with the solenoid of described short circuit relay；The ground wire terminal of described three attaching plugs
Electrically connect with the one of described short circuit relay group of normally opened terminal respectively with described fire line terminal.
A kind of earth leakage protective device voltage protection the most according to claim 1, it is special
Levy and be, be provided with reversing switch and forward and reverse display lamp on the housing, change at described voltage
Change described in being provided with between two inputs and described fire line terminal and the described zero terminal of circuit
To switch, two inputs of described reversing switch respectively with described fire line terminal and described zero line
Terminal electrically connect, two outfans of described reversing switch respectively with described voltage conversion circuit
Two input electrical connections；It is provided with described forward and reverse between two outfans of described reversing switch
Display lamp；Short with described respectively at fire wire output end and the described ground wire terminal of described reversing switch
One group of normally opened terminal electrical connection of contact relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620505677.5U CN205829133U (en) | 2016-05-30 | 2016-05-30 | Earth leakage protective device voltage protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620505677.5U CN205829133U (en) | 2016-05-30 | 2016-05-30 | Earth leakage protective device voltage protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205829133U true CN205829133U (en) | 2016-12-21 |
Family
ID=57558731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620505677.5U Active CN205829133U (en) | 2016-05-30 | 2016-05-30 | Earth leakage protective device voltage protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205829133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958434A (en) * | 2016-05-30 | 2016-09-21 | 阿拉腾格日勒 | Leakage protector voltage protection device |
-
2016
- 2016-05-30 CN CN201620505677.5U patent/CN205829133U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958434A (en) * | 2016-05-30 | 2016-09-21 | 阿拉腾格日勒 | Leakage protector voltage protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |