CN208806608U - A kind of the power lightning protection circuit and lightning protection power source of equipotential link - Google Patents
A kind of the power lightning protection circuit and lightning protection power source of equipotential link Download PDFInfo
- Publication number
- CN208806608U CN208806608U CN201821502626.2U CN201821502626U CN208806608U CN 208806608 U CN208806608 U CN 208806608U CN 201821502626 U CN201821502626 U CN 201821502626U CN 208806608 U CN208806608 U CN 208806608U
- Authority
- CN
- China
- Prior art keywords
- lightning
- equipotential
- protection
- module
- varistor
- 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.)
- Active
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses the power lightning protection circuits and lightning protection power source of a kind of equipotential link, the power lightning protection circuit of the equipotential link, including for prime overvoltage protection and equipment and route being made to become the prime lightning-protection module of equipotential link, for decoupling between grade and reduce the decoupling module of route residual voltage, and for rear class overvoltage protection and equipment and route is made to become the rear class lightning-protection module of equipotential link, the prime lightning-protection module and input terminal firewire, zero curve and the connection of decoupling module, the decoupling module is also connect with rear class lightning-protection module, the rear class lightning-protection module also with output end firewire, zero curve connection, the prime lightning-protection module and rear class lightning-protection module are all connected with equipotential interface and form equipotential link；Make overvoltage protection using prime and rear class lightning-protection module and equipment and route is made to form equipotential link, each node potential of circuit is all equal when thunder and lightning being made to enter route, prevents overvoltage from entering route by decoupling module, to protect equipment.
Description
Technical field
The utility model relates to power lightning protection field, in particular to the power lightning protection circuit of a kind of equipotential link and lightning protection
Power supply.
Background technique
Prior art lightning protection circuit only payes attention to the protection of route common mode, thinks little of differential mode protection；Using differential mode, common mode full guard
Lightning protection circuit, generally all lack multi-stage protection thinking, limit voltage protection often beyond the pressure resistance of equipment, still do not have
Protect capacity of equipment.The prior art, which also has, exempts to be grounded lightning protection device, but these lightning-protected products only do a differential mode protection, suddenly
Slightly common mode protection, is often extremely difficult to protection effect.Using the lightning protection device of multi-stage protection, the decoupling between multi-stage protection is not achieved
Often there is blind area in the requirement between grade, the cooperation between two-stage, cause prime not rise and start rear class lightning protection component with regard to impaired existing
As being seriously endangered to protection equipment.
Thus the prior art could be improved and improve.
Utility model content
Place in view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of electricity of equipotential link
Source lightning protection circuit and lightning protection power source, make overvoltage protection using prime and rear class lightning-protection module and to form equipment and route etc. electric
Position connection, each node potential of circuit is all equal when thunder and lightning being made to enter route, prevents overvoltage from entering route by decoupling module, from
And protect equipment.
In order to achieve the above object, the utility model takes following technical scheme:
A kind of power lightning protection circuit of equipotential link, including for prime overvoltage protection and make equipment and route at
For the prime lightning-protection module of equipotential link, for decoupling between grade and the decoupling module of route residual voltage is reduced, and be used for rear class
Overvoltage protection and equipment and route is made to become the rear class lightning-protection module of equipotential link, the prime lightning-protection module and input
Firewire, zero curve and the connection of decoupling module, the decoupling module is held also to connect with rear class lightning-protection module, the rear class lightning-protection module
It is also connect with output end firewire, zero curve, the prime lightning-protection module and rear class lightning-protection module are all connected with equipotential interface and are formed
Current potential connection.
The power lightning protection circuit of the equipotential link, the prime lightning protection circuit include that the first compression limiter and first is opened
Close unit；The first compression limiter connection decoupling module, input terminal firewire, zero curve and first switch unit, are used for input terminal
Overvoltage protection between firewire and zero curve；The first switch unit is also connect with equipotential interface, is used for and rear class lightning protection mould
Block forms equipotential link.
The power lightning protection circuit of the equipotential link, the rear class lightning protection circuit include that the second compression limiter and second is opened
Close unit；Second compression limiter connects the decoupling module, output end firewire, zero curve and second switch unit, for defeated
Overvoltage protection between outlet firewire and zero curve；The second switch unit is also connect with equipotential interface, for opening with first
It closes unit and forms equipotential link.
The power lightning protection circuit of the equipotential link, first compression limiter include the first varistor, the second pressure
Quick resistance, one end connection input terminal firewire and decoupling module of first varistor, first varistor it is another
One end of the second varistor of end connection and second switch unit, the other end of second varistor connect input terminal zero curve
With decoupling module.
The first switch unit includes first switch tube, and one end of the first switch tube connects the first varistor
The other end of one end of the other end and the second varistor, the first switch tube connects equipotential interface.
The power lightning protection circuit of the equipotential link, the decoupling module includes equipotential isolation suppressor, described etc.
Potential isolation suppressor connects the first varistor, the second varistor and the second compression limiter.
The power lightning protection circuit of the equipotential link, second compression limiter include third varistor and the 4th
Varistor, a termination output end firewire of the third varistor and equipotential isolation suppressor, the third pressure limiting are quick
The other end of resistance connects one end and the second switch unit of the 4th varistor, the other end connection of the 4th varistor
Output end zero curve and equipotential isolation suppressor.
The power lightning protection circuit of the equipotential link, the second switch unit includes second switch, and described second
Switching tube one end connection third varistor the other end and the 4th varistor one end, the second switch it is another
End connection equipotential interface.
A kind of lightning protection power source of equipotential link, including shell are provided with pcb board in the shell, set on the pcb board
It is equipped with the power lightning protection circuit of equipotential link as described above.
Compared to the prior art, in the power lightning protection circuit and lightning protection power source of equipotential link provided by the utility model,
The power lightning protection circuit of the equipotential link, including for prime overvoltage protection and equipment and route is made to become equipotential
The prime lightning-protection module of connection for decoupling between grade and reduces the decoupling module of route residual voltage, and anti-for rear class overvoltage
The rear class lightning-protection module for protecting and equipment being made to become equipotential link with route, the prime lightning-protection module and input terminal firewire,
Zero curve and the connection of decoupling module, the decoupling module also connect with rear class lightning-protection module, the rear class lightning-protection module also with it is defeated
Outlet firewire, zero curve connection, the prime lightning-protection module and rear class lightning-protection module are all connected with equipotential interface and form equipotential company
It connects；Make overvoltage protection using prime and rear class lightning-protection module and equipment and route is made to form equipotential link, enters thunder and lightning
Each node potential of circuit is all equal when route, prevents overvoltage from entering route by decoupling module, to protect equipment.
Detailed description of the invention
Fig. 1 is the structural block diagram of the power lightning protection circuit of equipotential link provided by the utility model；
Fig. 2 is the circuit diagram of the power lightning protection circuit of equipotential link provided by the utility model.
Specific embodiment
The utility model provides the power lightning protection circuit and lightning protection power source of a kind of equipotential link, anti-using prime and rear class
Thunder module makees overvoltage protection and equipment and route is made to form equipotential link, each node potential of circuit when thunder and lightning being made to enter route
It is all equal, prevent overvoltage from entering route by decoupling module, to protect equipment.
To keep the purpose of this utility model, technical solution and effect clearer, clear, develop simultaneously implementation referring to the drawings
The utility model is further described in example.It should be appreciated that specific embodiment described herein is only practical to explain
It is novel, it is not used to limit the utility model.
Referring to Fig. 1, the power lightning protection circuit of equipotential link provided by the utility model includes being used for prime overvoltage
It protects and makes equipment and route to become the prime lightning-protection module 10 of equipotential link, for decoupling between grade and reduce route residual voltage
Decoupling module 20, and for rear class overvoltage protection and equipment and route is made to become the rear class lightning protection mould of equipotential link
Block 30, the prime lightning-protection module 10 are connect with input terminal firewire, zero curve and decoupling module, the decoupling module 20 also with it is rear
Grade lightning-protection module 30 connects, and the rear class lightning-protection module 30 is also connect with output end firewire, zero curve, the prime lightning-protection module 10
Equipotential interface LEB, which is all connected with, with rear class lightning-protection module 30 forms equipotential link.
When it is implemented, into route lightning voltage by prime lightning-protection module 10 limit within a preset range and release to etc.
Current potential interface LEB, since prime lightning-protection module and rear class lightning-protection module 30 make equipment and route form equipotential link, so electric
The each node potential in road is consistent, achievees the effect that protection circuit and equipment；After prime lightning-protection module 10, remaining thunder and lightning is residual
Pressure by decoupling module 20 carry out decoupling, reduce residual voltage, finally remaining residual voltage is reduced by rear class lightning-protection module 30 and release to etc.
Current potential interface LEB, is preferably minimized route residual voltage.In the present embodiment, entire lightning protection circuit uses equipotential link, keeps circuit each
Node potential is equal, greatly improves the ability of protection equipment, and circuit is made to exempt to be grounded, and is not only avoided that use to environment dirt
The material of dye makees grounding body, and can use in the scene that many ground connection not meet country and industry standard, both saved material,
Reduce pollution again.
Further, referring to Figure 2 together, the prime lightning-protection module 10 includes that the first compression limiter 101 and first is opened
Close unit 102；First compression limiter 101 connects decoupling module 20, input terminal firewire, zero curve and first switch unit 102,
For the overvoltage protection between input terminal firewire and zero curve；The first switch unit 102 is also connect with equipotential interface LEB,
For forming equipotential link with rear class lightning-protection module 30.The lightning wave for entering route is limited in by the first compression limiter 101
Preset range, to be protected between having the function that line；This is limited in by first switch unit 102 lightning wave of preset range again
It releases to equipotential interface LEB, since first switch unit 102 and rear class lightning-protection module form equipotential link bridge, makes line
Road and equipment form equipotential link, achieve the effect that equipotential protects equipment.
The rear class lightning protection circuit includes the second compression limiter 301 and second switch unit 302；Second compression limiter
The 301 connections decoupling module 20, output end firewire, zero curve and second switch unit 302, between output end firewire and zero curve
Overvoltage protection；The second switch unit 302 is also connect with equipotential interface LEB, is used for and 102 shape of first switch unit
At equipotential link.Route residual voltage is limited in equipment by the second compression limiter 301 and presets pressure voltage hereinafter, forming equipment
Overvoltage protection；Equipotential link bridge is formed by second switch unit 302 and first switch unit 102, makes route and sets
It is standby to form equipotential link, to protect equipment.
First compression limiter 101 includes the first varistor RV1, the second varistor RV2, the first pressure-sensitive electricity
One end connection input terminal firewire and decoupling module of RV1 are hindered, the other end of the first varistor RV1 connects the second pressure-sensitive electricity
Hinder one end and the second switch unit 302 of RV2, the other end connection input terminal zero curve and decoupling of the second varistor RV2
Module 20.Voltage clamp is carried out to the firewire of input terminal and zero curve respectively by the first varistor RV1 and the second varistor RV2
Position, respectively within a preset range by the voltage limitation on two lines road, so that protection circuit is not blown.
The first switch unit 102 includes first switch tube G1, the first pressure of one end connection of the first switch tube G1
The other end connection equipotential of one end of the other end of quick resistance RV1 and the second varistor RV2, the first switch tube G1 connects
Mouth LEB.First switch tube G1 described in the present embodiment uses gas-discharge tube, passes through first switch tube G1 and second switch unit
302 connections, and are limited in the lightning wave in preset range and release to equipotential interface LEB, form route and equipment etc. electric
Position connection.
The decoupling module 20 includes equipotential isolation suppressor 201, the connection of equipotential isolation suppressor 201 first
Varistor RV1, the second varistor RV2 and the second compression limiter 302.It is anti-in prime by equipotential isolation suppressor 201
Between thunder module 10 and rear class lightning-protection module 30 carry out grade between decoupling, due to equipotential isolation suppressor 201 have resistance high frequency lead to it is low
Therefore the function of frequency can prevent overvoltage surge from entering back end of line by equipotential isolation suppressor, to play reduction
Residual voltage, the effect for protecting equipment.
Second compression limiter 301 includes third varistor RV3 and the 4th varistor RV4, and the third is pressure-sensitive
A termination output end firewire and equipotential isolation suppressor 201 of resistance RV3, the other end of the third limit varistor RV3
One end and the second switch unit 302 of the 4th varistor RV4 are connected, the other end connection of the 4th varistor RV4 is defeated
Outlet zero curve and equipotential isolation suppressor 201.By third varistor RV3 and the 4th varistor RV4 respectively to output
The firewire and zero curve at end carry out voltage clamping, and the voltage on two lines road is limited in equipment pressure voltage respectively hereinafter, to protect
Equipment is not damaged.
In the power lightning protection circuit of the equipotential link, the second switch unit 302 includes second switch G2, institute
State the other end of one end connection third varistor RV3 of second switch G2 and one end of the 4th varistor RV4, described the
The other end of two switching tube G2 connects equipotential interface LEB.Second switch G2 described in the present embodiment uses gas-discharge tube,
The remaining lightning wave for entering route is released to equipotential interface LEB by second switch G2, thus with first switch tube G1
Equipotential link bridge is formed, and forms Electric potential protection.
Power lightning protection circuit based on above-mentioned equipotential link, the utility model correspondingly provide a kind of equipotential link
Lightning protection power source, including shell is provided with pcb board in the shell, equipotential as described above is provided on the pcb board and is connected
The power lightning protection circuit connect, since the power lightning protection circuit of the equipotential link being described in detail above, this
Place is not described further.
In conclusion in the power lightning protection circuit and lightning protection power source of equipotential link provided by the utility model, it is described etc.
The power lightning protection circuit of current potential connection, including for prime overvoltage protection and equipment and route being made to become equipotential link
Prime lightning-protection module for decoupling between grade and reduces the decoupling module of route residual voltage, and for rear class overvoltage protection and
Make equipment and route become the rear class lightning-protection module of equipotential link, the prime lightning-protection module and input terminal firewire, zero curve with
And the connection of decoupling module, the decoupling module are also connect with rear class lightning-protection module, the rear class lightning-protection module is also fiery with output end
Line, zero curve connection, the prime lightning-protection module and rear class lightning-protection module are all connected with equipotential interface and form equipotential link；It utilizes
Prime and rear class lightning-protection module make overvoltage protection and equipment and route are made to form equipotential link, electric when thunder and lightning being made to enter route
Each node potential in road is all equal, prevents overvoltage from entering route by decoupling module, to protect equipment.
It is understood that for those of ordinary skills, can with technical solution according to the present utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement all should belong to appended by the utility model
Scope of protection of the claims.
Claims (9)
1. a kind of power lightning protection circuit of equipotential link, which is characterized in that including being used for prime overvoltage protection and making to set
The standby prime lightning-protection module for becoming equipotential link with route for decoupling between grade and reduces the decoupling module of route residual voltage, with
And for rear class overvoltage protection and equipment and route is made to become the rear class lightning-protection module of equipotential link, the prime lightning protection
Module is connect with input terminal firewire, zero curve and decoupling module, and the decoupling module is also connect with rear class lightning-protection module, after described
Grade lightning-protection module is also connect with output end firewire, zero curve, and the prime lightning-protection module and rear class lightning-protection module are all connected with equipotential
Interface forms equipotential link.
2. the power lightning protection circuit of equipotential link according to claim 1, which is characterized in that the prime lightning-protection module
Including the first compression limiter and first switch unit；First compression limiter connection decoupling module, input terminal firewire, zero curve and
First switch unit, for the overvoltage protection between input terminal firewire and zero curve；The first switch unit also connects with equipotential
Mouth connection, is used for and rear class lightning-protection module forms equipotential link.
3. the power lightning protection circuit of equipotential link according to claim 2, which is characterized in that the rear class lightning-protection module
Including the second compression limiter and second switch unit；Second compression limiter connects the decoupling module, output end firewire, zero
Line and second switch unit, for the overvoltage protection between output end firewire and zero curve；The second switch unit also with etc. it is electric
Position interface connection, for forming equipotential link with first switch unit.
4. the power lightning protection circuit of equipotential link according to claim 3, which is characterized in that first compression limiter
Including the first varistor, the second varistor, one end connection input terminal firewire and decoupling module of first varistor,
The other end of first varistor connects one end and the second switch unit of the second varistor, second varistor
Other end connection input terminal zero curve and decoupling module.
5. the power lightning protection circuit of equipotential link according to claim 4, which is characterized in that the first switch unit
Including first switch tube, one end of the first switch tube connect the first varistor the other end and the second varistor one
The other end at end, the first switch tube connects equipotential interface.
6. the power lightning protection circuit of equipotential link according to claim 5, which is characterized in that the decoupling module includes
Equipotential isolation suppressor, the equipotential isolation suppressor connect the first varistor, the second varistor and the second pressure limiting
Unit.
7. the power lightning protection circuit of equipotential link according to claim 6, which is characterized in that second compression limiter
Including third varistor and the 4th varistor, the termination output end firewire and equipotential isolation of the third varistor
Suppressor, the other end of third limit varistor connect one end and the second switch unit of the 4th varistor, and described the
The other end connection output end zero curve and equipotential isolation suppressor of four varistors.
8. the power lightning protection circuit of equipotential link according to claim 7, which is characterized in that the second switch unit
Including second switch, the one of the other end of one end of second switch connection third varistor and the 4th varistor
The other end at end, the second switch connects equipotential interface.
9. a kind of lightning protection power source of equipotential link, which is characterized in that including shell, pcb board is provided in the shell, it is described
Power lightning protection circuit just like equipotential link described in claim 1-8 any one is set on pcb board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821502626.2U CN208806608U (en) | 2018-09-14 | 2018-09-14 | A kind of the power lightning protection circuit and lightning protection power source of equipotential link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821502626.2U CN208806608U (en) | 2018-09-14 | 2018-09-14 | A kind of the power lightning protection circuit and lightning protection power source of equipotential link |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208806608U true CN208806608U (en) | 2019-04-30 |
Family
ID=66237903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821502626.2U Active CN208806608U (en) | 2018-09-14 | 2018-09-14 | A kind of the power lightning protection circuit and lightning protection power source of equipotential link |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208806608U (en) |
-
2018
- 2018-09-14 CN CN201821502626.2U patent/CN208806608U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108008272A (en) | A kind of design circuit realized lightning surge and insulation voltage-withstand test while passed through | |
| WO2018121278A1 (en) | Surge protection circuit and electronic device using the circuit | |
| CN105870895A (en) | Protection circuit for lightning surge | |
| CN108493913A (en) | A kind of AC power surge protective device and electronic equipment | |
| CN103986148A (en) | Lightning protection circuit of RS485 communication line | |
| CN207010227U (en) | A kind of surge device protector and its circuit | |
| CN100414803C (en) | Lightening arresting method and device for Ethernet port | |
| CN207527789U (en) | A kind of HomeBus interface circuits | |
| CN208806608U (en) | A kind of the power lightning protection circuit and lightning protection power source of equipotential link | |
| CN208890365U (en) | A kind of the power lightning protection circuit and lightning protection power source of 5G communication base station | |
| JP2011155759A (en) | Surge energy transfer circuit | |
| CN208623331U (en) | A kind of Vehicular intercom protection circuit | |
| CN202586325U (en) | Lightning-protection surge-proof power source protection device | |
| CN205829164U (en) | A kind of SPD lightning protection device of band remote signalling terminal | |
| CN207799010U (en) | It is a kind of realize lightning surge and insulate voltage-withstand test simultaneously by design circuit | |
| CN204012686U (en) | A kind of serial interface circuit with lightning protection function | |
| CN206533129U (en) | A kind of lightning protection circuit for electronic equipment RS485 interfaces | |
| CN208190250U (en) | A kind of CAN bus protection circuit | |
| CN208508516U (en) | A kind of AC power source surge protective device and electronic equipment | |
| CN203289095U (en) | Lightning protection circuit for switch power supply | |
| CN207251204U (en) | AC power protective device and power-supply device | |
| CN207353645U (en) | Split clamping type cable arrester | |
| CN211670776U (en) | Surge protection circuit, power supply equipment and power supply system | |
| CN204597472U (en) | A kind of lightning protection circuit for electronic equipment RS232 signaling interface | |
| CN205304239U (en) | Dry node lightning protection module of outdoor photovoltaic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |