CN104813432B - Surge protection device having short-circuit current protection function - Google Patents
Surge protection device having short-circuit current protection function Download PDFInfo
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- CN104813432B CN104813432B CN201280077275.4A CN201280077275A CN104813432B CN 104813432 B CN104813432 B CN 104813432B CN 201280077275 A CN201280077275 A CN 201280077275A CN 104813432 B CN104813432 B CN 104813432B
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- short circuit
- protection module
- surge
- circuit current
- current
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/10—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
- H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
- H01H71/0228—Mounting or assembling the different parts of the circuit breaker having provisions for interchangeable or replaceable parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/346—Details concerning the arc formation chamber
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- Emergency Protection Circuit Devices (AREA)
Abstract
A surge protection device (100) having a short-circuit protection function, comprising a surge protection module (102) and a short-circuit current protection module (101).The surge protection module discharges and suppresses a surge current and voltage, and the surge protection module is a plug-in type module. The short-circuit current protection module is integrated in a pedestal, and the short-circuit current protection module provides short-circuit protection and plug-in mounting for the surge protection module. The surge protection device overcomes the impulse current problem brought about by using an external overcurrent protection device as backup protection, while having a strong current limiting capacity, good short-circuit breaking capacity, and small minimal instantaneous tripping current value, can withstand a failure mode occurring in a temporary overvoltage (TOV), and can also play the role of protection in the case of a low current.
Description
Technical field
The present invention relates to the overvoltage protection field of low-voltage distribution system, more particularly, it relates to one kind has short circuit guarantor
The voltage-limiting surge protector of protective function.
Background technology
Due to the factors such as impact, power-frequency voltage fluctuation and variation of ambient temperature, element (the pressure-sensitive electricity for voltage-limit type SPD
Resistance) inherently produce deterioration or short-circuit failure, lead to heat, short circuit or electric shock etc. fault to the people of surrounding, thing or system
Itself constitutes a threat to.Therefore, voltage-limit type SPD must be deteriorated to it and short-circuit protection, and (heat is protected must to configure anti-thermal runaway
Shield), the disconnector of anti-short-circuit failure (short-circuit protection).When voltage-limit type SPD occurs deterioration or during short-circuit failure, disconnector can be by
SPD opens from system break, in case locking system sustained fault, it is to avoid the generation of fire.
In existing voltage-limit type SPD failure protection techniques, the disconnector for anti-thermal runaway generally adopts overcurrent protection
Element is as external device (ED).Over-current protecting element is generally breaker, fuse, RCD.Because these external device (ED)s are with work
Design based on frequency characteristic, the surging technology performance indications that do not match, from when it is impossible to ensure at this two aspect
Performance is realized characteristic and is matched.It is possible that external short-circuit protection cannot bear the electricity matching with voltage-limit type SPD
Gush impact；Clearly phenomenon cannot be waited for the overall residual voltage Up value after over-current protecting element and SPD combination, these problems will
Reduce the security during voltage-limit type SPD uses and protected effect.
Application No. CN200810039516.1, the patent application of entitled " having the surge protector of back-up protection " discloses
A kind of surge protector with back-up protection, is integrated with short-circuit protection and surge protector integrated design concept,
And overcome the high problem of the residual voltage that existing voltage-limit type SPD brought by back-up protection using external short-circuit protection device.
But this application patent still has very big defect, such as：1st, discharge capacity is little；2nd, short circuit breaking capacity is low；3、
There is no the protection of short circuit current little multiple overload, guard interval is little；4th, short-circuit protection protection reliability is not high；5th, do not examine
Consider the protection problem of the temporary overvoltage causing in the brought system failure of Large Copacity surge impact；6th, product overall volume
Greatly.
Content of the invention
It is contemplated that proposing a kind of voltage-limiting surge protector with short-circuit protection function.
According to one embodiment of the invention, disclose a kind of integrated surge protection with short circuit current defencive function
Device, including surge protection module and short circuit current protection module.Surge protection module is released and is suppressed surge current and voltage, electricity
Gushing protection module is inserting module.The integrated short-circuit protection function of short circuit current protection module and plug pedestal integrated design,
Short circuit current protection module is renewable type, provides short-circuit protection to install with plug for surge protection module.
In one embodiment, short circuit current protection module includes：Base and lid, moving contact and static contact, Lei Min switch,
Electromagnetic mechanism, elastic lug plate, dividing plate, the first binding post, the second binding post, the first resilient prongs and the second elasticity are inserted
Pin.Cover the shell that short circuit current protection module is formed on base.Static contact includes stationary contact bracket.Lei Min switch connects quiet
Contact and elastic lug plate.Electromagnetic mechanism includes iron yoke and coil.Elastic lug plate has Spring pins, upper-end bent extension
Divide and lower end extension divides.Dividing plate is arranged on base, and dividing plate forms self-extinguishment shape arc-chutes with base.First binding post connects
Outside phase line, the second binding post connects outside phase line or ground wire.First resilient prongs and the second resilient prongs grafting surge are protected
Shield module, the first resilient prongs connect the first binding post, and the second resilient prongs connect the second binding post.
In one embodiment, for ensureing that flowing through moving contact rack and the electric current of stationary contact bracket is equidirectional, quiet
Contact supporting is U-shaped rotary support.
In one embodiment, for ensureing the requirement of high current limiting capacity, it is more than the high value coil of 200m Ω using impedance
Carry out current limliting.Lei Min switch and this high value coils from parallel connection of coils, the first end of Lei Min switch is connected to stationary contact bracket.
In one embodiment, the second end of Lei Min switch and the Spring pins of elastic lug plate are connected with each other, elastic connecting
Line piece provides elastic pressure to compress quick for thunder switch.The upper end extension of stationary contact bracket and the first end of coil are welded in iron
The extension of yoke.The upper-end bent extension of elastic lug plate is welded to each other with the second end of coil and is connected, elastic wiring
The lower end extension of piece is divided and is connected with each other with the first pin by lug plate.
In one embodiment, dividing plate is provided with the grid of trapezoidal shape.
In one embodiment, moving contact be silver tungsten material, static contact be silver-colored tungsten carbide alloy material.
In one embodiment, Lei Min switchs as ceramic gas discharge tube, and nominal DC breakdown voltage is more than 250V.
In one embodiment, short circuit current protection module also includes handle, operating mechanism, clamp and selective installation
Remote alarming device.
In one embodiment, surge protection module has the first inserted sheet and the second inserted sheet, the first inserted sheet and the second inserted sheet
With the first resilient prongs and the second resilient prongs grafting.
In one embodiment, product overall width is 27mm or 36mm, the width of surge protection module be 9mm or
18mm；Surge protection module is provided with the fin of differing heights in both sides, and the corresponding surface of short circuit current protection module is provided with mutually
The groove of respective heights, prevents from mispluging and pulls out.
The surge protector with short circuit current defencive function of the present invention has following advantage：
1) solve the cooperation between lightning impulse current and power frequency short circuit current, high current limliting is carried out to bulk loop simultaneously
The requirement of ability, it is preferred to use the big resistance of positive temperature coefficient, such as impedance are more than the high value coil of 200m Ω.Current limiting capacity
By force that is to say, that the protective capability of short circuit current is high, short circuit breaking capacity is good；
2) little multiple overload current is protected, the protection minimum of low short circuit current reaches 10A, expands short-circuit protection model
Enclose, be applicable to any earthed system；
3) propose the TOV resistance patterns of renewable type first, eliminate the flame under traditional TOV fault and resistance patterns,
Prevent disaster hidden-trouble, security reliability is very high；
4) changing makes, using electrodynamic repulsion force, the principle that contact scolds out in advance, will not when Large Copacity lightning impulse current impacts
There is misoperation situation, it is possible to increase the service life of contact；
5) residual voltage Up is controlled, and power current and surge current binary channels rapid translating sensitivity and reliability are high.Frequently quick electricity
Circulation Switching not only allow for system overvoltage, also taken into account switching overvoltage it is therefore prevented that the quick switch of thunder misoperation it is ensured that
The stability of product and short-circuit breaking capacity；
6) adopt the contact material pairing of resistance to ablation, ablation resistance and anti-electrical wear ability high, the impact of Large Copacity lightning current
The excursion of lower contact pressure is little；
7) Lei Min switch, using the connected mode of elastic component contact it is ensured that the quick integrity switching during assembling of thunder, is easy to fill
Join；
8) between contact, the cooperation of the attracting big resistance current limliting with positive temperature coefficient of same direction current reduces arc extinguishing and requires, and increases
Bleed passage accelerates gas quickly to exclude, and merely with gas blast arc-quenching, small product size more minimizes.
Brief description
The above and other features of the present invention, property and advantage are by by retouching with reference to the accompanying drawings and examples
State and become readily apparent from, in the accompanying drawings, identical reference represents identical feature all the time, wherein：
Fig. 1 discloses the entirety of the surge protector with short circuit current defencive function according to one embodiment of the invention
Structure chart.
Fig. 2 discloses according to the electricity in the surge protector with short circuit current defencive function of one embodiment of the invention
Gush the structure chart of protection module.
Fig. 3 discloses according to the electricity in the surge protector with short circuit current defencive function of one embodiment of the invention
Gush protection module and the structure chart of pedestal grafting.
Fig. 4 discloses according to short in the surge protector with short circuit current defencive function of one embodiment of the invention
The cut-away view of road overcurrent protection module.
Fig. 5 discloses according to short in the surge protector with short circuit current defencive function of one embodiment of the invention
The structure chart of the dividing plate of road overcurrent protection module.
Fig. 6 discloses according to short in the surge protector with short circuit current defencive function of one embodiment of the invention
The structure chart of the self-extinguishment shape arc-chutes of road overcurrent protection module.
Specific embodiment
It is contemplated that propose a kind of surge protector with short circuit current defencive function, include surge protection module with
Short circuit current protection module.Surge protection module is released and is suppressed surge current and voltage, and surge protection module is plug-in mould
Block.Short circuit current protection module is integrated in pedestal, short circuit current protection module for surge protection module provide short-circuit protection with
Plug is installed.
Short circuit current protection module includes：Base and lid, moving contact and static contact, Lei Min switch, electromagnetic mechanism, elastic connecting
Line piece, dividing plate, the first binding post, the second binding post, the first resilient prongs and the second resilient prongs.Cover shape on base
Become the shell of pedestal.Static contact includes stationary contact bracket, and stationary contact bracket is U-shaped rotary support.Electromagnetic mechanism include iron yoke and
Coil, coil is connected to the high resistance measurement that impedance is more than 200m Ω, has very strong current limiting capacity.Lei Min switch connects stationary contact
Head and elastic lug plate.Lei Min switch and coils from parallel connection of coils, the first end of Lei Min switch is connected to stationary contact bracket.Lei Min switch
Second end is connected with each other with the Spring pins of elastic lug plate, and elastic lug plate provides elastic pressure to compress quick for thunder switch.Quiet
The upper end extension of contact supporting and the first end of coil are welded in the extension of iron yoke.The upper-end bent of elastic lug plate
Extension is welded to each other with the second end of coil and is connected, and the lower end extension of elastic lug plate divides to be inserted by lug plate and first
Pin piece is connected with each other.Elastic lug plate has Spring pins, upper-end bent extension and lower end extension and divides.Dividing plate is arranged on
On base, dividing plate is provided with the grid of trapezoidal shape, and dividing plate forms self-extinguishment shape arc-chutes with base.First binding post connects outside
Phase line, the second binding post connects outside phase line or ground wire.First resilient prongs and the second resilient prongs grafting surge protection mould
Block, the first resilient prongs connect the first binding post, and the second resilient prongs connect the second binding post.
Moving contact is silver tungsten material, static contact is silver-colored tungsten carbide alloy material.Lei Min switchs as ceramic gas discharge
Pipe, nominal DC breakdown voltage is more than 250V.Short circuit current protection module also includes handle, operating mechanism, clamp and selectivity
The remote alarming device installed.
Surge protection module has the first inserted sheet and the second inserted sheet, the first inserted sheet and the second inserted sheet and the first resilient prongs and
Second resilient prongs grafting.Product overall width is 27mm or 36mm, and the width of surge protection module is 9mm or 18mm；Surge
Protection module is provided with fin in both sides, and the corresponding surface of short circuit current protection module is provided with corresponding groove.
The surge protector with short circuit current defencive function of the present invention has following several features：
1) carry out short circuit current protection using the means that the big resistance of positive temperature coefficient increases current limliting, be more than from impedance
The high impedance solenoid of 200m Ω, product short circuit breaking capacity is high, is conducive to electromagnetic mechanism under low fault current simultaneously
Action, and minimum instantaneous trip current value is little, and product short-circuit protection scope is big, is applicable to any earthed system；
2) the TOV resistance patterns of renewable type, do not have Mars and flame phenomenon；
3) using the close support current of dynamic/static contact in the same direction thus reducing the principle of electrodynamic repulsion force, being designed with static contact and propping up
Frame is U-shaped rotary type structure so that the side of moving contact and the U-shaped rotary type structure stand installing static contact is electrodynamic
Under effect, there is the active force attracting each other, when lightning impulse current impacts, delay the reaction time that moving contact is scolded out,
In the presence of having attracted, the impulsive force being subject to when scolding out reduces moving contact simultaneously, thus without lead to operating mechanism tripping because
Impact and produce misoperation, the current limliting in conjunction with high impedance and contact only act on, by electromagnetic mechanism, the design scolded out, and operate machine
The stability of structure is very good；
4) before the quick switch of thunder in quick electric current conversion switch is to be connected in parallel on solenoid in electric connection frequently, that is,
Say that lightning impulse current, through out-of-date, is to first pass through Lei Min switch to release, later electric current of then releasing again passes through solenoid, fall
The surge energy that low solenoid is carried, improves the surge ability to bear of short circuit current protection module；
5) define the arc-chutes of self-extinguishment shape by being assemblied in interiors of products, replace original manifold type arc-chutes, product
Volume more minimizes.So-called self-extinguishment shape arc-chutes, are the grid with trapezoidal shape for the design on product parts, by product
Assembling, forms the arc-chutes of a half-sealed in dynamic/static contact opening and closing place, and dynamic/static contact to be completely enclosed in this half close
In the middle of the arc-chutes of envelope formula.Because the current limliting of big resistance, when moving contact is scolded out so that product produces in the case of fault high current
Less, the very first time carries out arc extinguishing by air-blowing to raw arc current；
6) moving contact be silver tungsten material, static contact be silver-colored tungsten carbide alloy material；
7) the nominal DC breakdown voltage of Lei Min switch is more than 250V；
8) surge protection module has anti-error plug function.
Fig. 1～Fig. 6 discloses the surge protector with short circuit current defencive function according to one embodiment of the invention
Structure chart.As shown in Fig. 1～Fig. 6：The surge protector 100 that this has short-circuit protection function aims to solve the problem that existing surge protection
The problem brought by back-up protection using external over-current protection device during device application.This has short circuit current defencive function
Surge protector 100 includes short circuit current protection module 101 and surge protection module 102, and the short circuit current protection module 101 stated is used
In protection surge protection module 102, surge protection module 102 is releasing and suppress, short circuit electricity for surge current and voltage
Stream protection module 101 is integrated with the pedestal installing surge protection module 102, and surge protection module 102 is plug type
's.
Short circuit current protection module 101 include base 103, lid 105, moving contact 106, static contact 107, Lei Min switch 108,
Electromagnetic mechanism 109, handle 110, operating mechanism 111, elastic lug plate 112, dividing plate 113, clamp 114, the first binding post
115th, the second binding post 116, the first resilient prongs 117 and the second resilient prongs 118 and can selectively install long-range
Warning device 104.
Lid 105 covers formation pedestal, the i.e. shell of surge protection module 102 on base 103.Static contact 107 includes stationary contact
Head bracket 107a, stationary contact bracket 107a is the U-shaped rotary support using U-shaped rotary type structure, to guarantee to flow through static contact 107
It is consistent so that moving contact 106 and the U-shaped rotary support installing static contact with the flow direction of the electric current of moving contact 106
Near the side of moving contact in the presence of electric power, there is the active force attracting each other it is ensured that impact in high current capacity
Under, delay the reaction time that moving contact is scolded out, and the impulsive force when scolding out for the moving contact is little, is not result in operating mechanism
The misoperation of 111 trippings.
Electromagnetic mechanism 109 includes iron yoke 109a and coil 109b, and coil 109b includes high resistance measurement, high resistance measurement pair
Coil 109b carries out current limliting, and the impedance of high resistance measurement is more than 300m Ω.The number of turn of coil 109b is more than 100 circles, so favourable
In action under low fault current for the electromagnetic mechanism, ensure that short circuit current protection module has high breaking capacity simultaneously.
Lei Min switch 108 is relation in parallel, further, thunder with the coil 109b of electromagnetic mechanism 109 in electric connection
The first end of quick switch 108 is connected with each other with stationary contact bracket 107a of the U-shaped rotary type of static contact 107, Lei Min switch 108
Second end is connected with each other with the Spring pins of elastic lug plate 112, provides elastic pressure by quick for thunder switch by elastic lug plate 112
108 compressions.Elastic lug plate 112 has Spring pins, upper-end bent extension and lower end extension and divides.Static contact is installed
The upper end extension of 107 stationary contact bracket 107a of U-shaped rotary type is welded in iron yoke together with the first end of coil 109b
The extension of 109a.The upper-end bent extension of elastic lug plate 112 is welded to each other with second end of coil 109b and is connected.
The lower end extension of elastic lug plate 112 is divided and is connected with each other with the first pin 117 by lug plate 119.Such connecting-type
Formula it is ensured that on electricity the quick switch in parallel of thunder before electromagnetic mechanism coil, in particular, when surge current invades,
When the energy of surge passes through stationary contact bracket, released by the quick switch of thunder first, the electric current after then releasing just passes through
Solenoid, so greatly reduces the surge energy that big resistance coil is carried, and improves the electricity of short circuit current protection module
Gush ability to bear.
Base 103 is assemblied in, with dividing plate 113, the arc-chutes 120 that interiors of products defines a self-extinguishment shape.Specifically,
The grid of trapezoidal shape is provided with dividing plate 113, by the close fit of base 103 and both dividing plates 113, in dynamic/static contact folding
Place forms the arc-chutes 120 of a half-sealed, and dynamic/static contact is completely enclosed in the middle of this arc-chutes.When moving contact is scolded
When opening generation electric arc, electric arc moves downward along the side of the support of U-shaped revolving structure under electrodynamic action, very first time electricity
Arc is directly cut by trapezoidal grid, reaches the effect extinguishing electric arc.
Short circuit current protection module 101 is integrated in the pedestal install surge protection module 102, connects for connecting outside
First and second binding posts of line are respectively positioned in short circuit current protection module, and first in short circuit current protection module connects
Line terminals 115 are for being connected with outside phase line, and the second binding post 116 is for being connected with outside phase line or ground wire.Short
The first binding post 115 in the overcurrent protection module of road is the connection and installation surge protection module by a series of internal electricity
The first pin 117 be connected, and the second binding post 116 and the second pin 118 installing surge protection module are connected with each other, guarantor
Card short circuit current protection module provides back-up protection to described surge protection module.
Surge protection module 102 is designed as plug type structure, changes simple, fast.Surge protection module 102 is logical
Corresponding first pin 117 and second crossed in its first inserted sheet 122 and the second inserted sheet 123 insertion short circuit current protection module is inserted
Realize interconnective in pin 118.Surge protection module is provided with differing heights fin 121 in its both sides, and in short circuit current
Protection module is installed corresponding surface and is provided with the groove of corresponding differing heights it is ensured that surge protection module installs reliability, will not carry out
Misplug and pull out operation.
It is 9mm or 18mm that surge protection module 102 is designed as width, meets International Design convention, and module installs compatibility
Higher.
Moving contact 106 is silver tungsten material, static contact 107b is silver-colored tungsten carbide alloy material, can very advantageously subtract
Slow surge energy is to the corrode of dynamic and static contact it is ensured that after the impact of multiple high current capacity, short circuit current protection module is still
So effective, substantially increase service life.
Lei Min switch 108 is switch element, it is preferred to use inflatable discharge tube, such as ceramic gas discharge tube, nominal DC
Breakdown voltage is more than 250V.
The surge protector with short circuit current defencive function of the present invention has following advantage：
1) solve the cooperation between lightning impulse current and power frequency short circuit current, high current limliting is carried out to bulk loop simultaneously
The requirement of ability, it is preferred to use the big resistance of positive temperature coefficient, such as impedance are more than the high value coil of 200m Ω.Current limiting capacity
By force that is to say, that the protective capability of short circuit current is high, short circuit breaking capacity is good；
2) little multiple overload current is protected, the protection minimum of low short circuit current reaches 10A, expands short-circuit protection model
Enclose, be applicable to any earthed system；
3) propose the TOV resistance patterns of renewable type first, eliminate the flame under traditional TOV fault and resistance patterns,
Prevent disaster hidden-trouble, security reliability is very high；
4) changing makes, using electrodynamic repulsion force, the principle that contact scolds out in advance, will not when Large Copacity lightning impulse current impacts
There is misoperation situation, it is possible to increase the service life of contact；
5) residual voltage Up is controlled, and power current and surge current binary channels rapid translating sensitivity and reliability are high.Frequently quick electricity
Circulation Switching not only allow for system overvoltage, also taken into account switching overvoltage it is therefore prevented that the quick switch of thunder misoperation it is ensured that
The stability of product and short-circuit breaking capacity；
6) adopt the contact material pairing of resistance to ablation, ablation resistance and anti-electrical wear ability high, the impact of Large Copacity lightning current
The excursion of lower contact pressure is little；
7) Lei Min switch, using the connected mode of elastic component contact it is ensured that the quick integrity switching during assembling of thunder, is easy to fill
Join；
8) between contact, the cooperation of the attracting big resistance current limliting with positive temperature coefficient of same direction current reduces arc extinguishing and requires, and increases
Bleed passage accelerates gas quickly to exclude, and merely with gas blast arc-quenching, small product size more minimizes.
Above-described embodiment is available to be familiar with person in the art to realize or using the present invention, to be familiar with this area
Personnel can make the various modifications or change invention thought without deviating from the present invention to above-described embodiment, thus the protection of the present invention
Scope is not limited by above-described embodiment, and should be the maximum magnitude meeting the inventive features that claims are mentioned.
Claims (10)
1. a kind of surge protector with short circuit current defencive function is it is characterised in that include：
Surge protection module, surge protection module is released and is suppressed surge current and voltage, and surge protection module is plug-in mould
Block；
Short circuit current protection module, is integrated in pedestal, and short circuit current protection module provides short circuit for described surge protection module
Protection is installed with plug, and described short circuit current protection module includes moving contact and static contact, and static contact includes stationary contact bracket, institute
Stating stationary contact bracket is U-shaped rotary support, and static contact is consistent with moving contact current direction.
2. there is the surge protector of short circuit current defencive function as claimed in claim 1 it is characterised in that described short circuit is electric
Stream protection module also includes：
Base and lid, cover the shell forming pedestal on base；
Lei Min switchs, and Lei Min switch connects static contact and elastic lug plate；
Electromagnetic mechanism, electromagnetic mechanism includes iron yoke and coil；
Elastic lug plate, elastic lug plate has Spring pins, upper-end bent extension and lower end extension and divides；
Dividing plate, dividing plate is arranged on base, and dividing plate forms self-extinguishment shape arc-chutes with base；
First binding post, the first binding post connects outside phase line；
Second binding post, the second binding post connects outside phase line or ground wire；
First resilient prongs and the second resilient prongs, the first resilient prongs and the second resilient prongs grafting surge protection module, the
One resilient prongs connect the first binding post, and the second resilient prongs connect the second binding post.
3. there is the surge protector of short circuit current defencive function as claimed in claim 2 it is characterised in that
Described coil is connected to the high resistance measurement that impedance is more than 500m Ω；
Lei Min switch and coils from parallel connection of coils, the first end of Lei Min switch is connected to stationary contact bracket.
4. there is the surge protector of short circuit current defencive function as claimed in claim 3 it is characterised in that
Second end of Lei Min switch and the Spring pins of elastic lug plate are connected with each other, and elastic lug plate offer elastic pressure is by thunder
Quick switch compression；
The upper end extension of stationary contact bracket and the first end of coil are welded in the extension of iron yoke；
The upper-end bent extension of elastic lug plate is welded to each other with the second end of coil and is connected, and the lower end of elastic lug plate is prolonged
Extending portion is divided and is connected with each other with the first pin by lug plate.
5. there is the surge protector of short circuit current defencive function as claimed in claim 2 it is characterised in that on described dividing plate
It is provided with the grid of trapezoidal shape.
6. there is the surge protector of short circuit current defencive function as claimed in claim 1 it is characterised in that
Described moving contact is silver tungsten material；
Described static contact is silver-colored tungsten carbide alloy material.
7. there is the surge protector of short circuit current defencive function as claimed in claim 2 it is characterised in that
Described thunder is quick to be switched as ceramic gas discharge tube, and discharge voltage is more than 250V.
8. there is the surge protector of short circuit current defencive function as claimed in claim 2 it is characterised in that described short circuit is electric
Stream protection module also includes handle, operating mechanism, clamp and the remote alarming device selectively installed.
9. there is the surge protector of short circuit current defencive function as claimed in claim 2 it is characterised in that described surge is protected
Shield module has the first inserted sheet and the second inserted sheet, and the first inserted sheet and the second inserted sheet are slotting with the first resilient prongs and the second resilient prongs
Connect.
10. there is the surge protector of short circuit current defencive function as claimed in claim 1 it is characterised in that
The width of surge protection module is 9mm or 18mm；
Surge protection module is provided with differing heights fin in both sides, and the corresponding surface of short circuit current protection module is provided with corresponding tool
There is the groove of respective heights.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611176133.XA CN106783431B (en) | 2012-11-12 | 2012-11-12 | Surge protector with short circuit current defencive function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2012/084450 WO2014071628A1 (en) | 2012-11-12 | 2012-11-12 | Surge protection device having short-circuit current protection function |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611176133.XA Division CN106783431B (en) | 2012-11-12 | 2012-11-12 | Surge protector with short circuit current defencive function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104813432A CN104813432A (en) | 2015-07-29 |
| CN104813432B true CN104813432B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611176133.XA Active CN106783431B (en) | 2012-11-12 | 2012-11-12 | Surge protector with short circuit current defencive function |
| CN201280077275.4A Active CN104813432B (en) | 2012-11-12 | 2012-11-12 | Surge protection device having short-circuit current protection function |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611176133.XA Active CN106783431B (en) | 2012-11-12 | 2012-11-12 | Surge protector with short circuit current defencive function |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2919254B1 (en) |
| CN (2) | CN106783431B (en) |
| CY (1) | CY1123104T1 (en) |
| ES (1) | ES2791039T3 (en) |
| WO (1) | WO2014071628A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078227B (en) * | 2014-06-11 | 2016-05-18 | 安徽三和电力技术有限公司 | For the fixture of Current Transformer Secondary overvoltage protection device |
| AU2017268478B2 (en) | 2016-05-20 | 2021-10-21 | Erico International Corporation | Distribution block with integrated surge protective device |
| CN106329507B (en) * | 2016-10-15 | 2018-08-24 | 浙江雷源电气有限公司 | A kind of SCB back-up protections device and its control method |
| CN107833813A (en) * | 2017-12-11 | 2018-03-23 | 宏秀电气有限公司 | A kind of Anti-surging breaker |
| CN108807020A (en) * | 2018-05-29 | 2018-11-13 | 德力西电气有限公司 | A kind of contact system of breaker of plastic casing |
| CN110323730B (en) * | 2019-06-05 | 2024-04-23 | 杭州国民电气有限公司 | Surge protector |
| CN115223826B (en) * | 2022-09-20 | 2023-03-10 | 国网山东省电力公司桓台县供电公司 | But alarm device of voltage fluctuation fixed point identification trouble |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004018275B4 (en) * | 2004-04-15 | 2007-10-18 | Siemens Ag | switchgear |
| DE102006000919A1 (en) * | 2006-01-05 | 2007-07-19 | Dehn + Söhne Gmbh + Co. Kg | Plug-in surge arrester with one or more overvoltage protection elements |
| CN101170257B (en) * | 2007-11-30 | 2010-08-11 | 上海电科电器科技有限公司 | Backup protection unit for surge protector |
| FR2928026B1 (en) * | 2008-02-27 | 2011-08-19 | Schneider Electric Ind Sas | OVERVOLTAGE PROTECTION DEVICE COMPRISING SELECTIVE DISCONNECT MEANS |
| CN101320658B (en) * | 2008-06-25 | 2011-08-24 | 上海电科电器科技有限公司 | Surge protector with backup protection |
| US8164018B2 (en) * | 2009-03-23 | 2012-04-24 | Siemens Industry, Inc. | Circuit breaker arc chambers and methods for operating same |
| CN201528189U (en) * | 2009-06-17 | 2010-07-14 | 孙巍巍 | Novel backup protection device of surge protector |
| CN201466676U (en) * | 2009-07-09 | 2010-05-12 | 菲尼克斯电气(南京)研发工程中心有限公司 | Secondary grounding protector of electric power voltage transformer |
-
2012
- 2012-11-12 CN CN201611176133.XA patent/CN106783431B/en active Active
- 2012-11-12 ES ES12887906T patent/ES2791039T3/en active Active
- 2012-11-12 EP EP12887906.1A patent/EP2919254B1/en active Active
- 2012-11-12 WO PCT/CN2012/084450 patent/WO2014071628A1/en active Application Filing
- 2012-11-12 CN CN201280077275.4A patent/CN104813432B/en active Active
-
2020
- 2020-05-20 CY CY20201100461T patent/CY1123104T1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014071628A1 (en) | 2014-05-15 |
| CN106783431B (en) | 2018-09-07 |
| CN104813432A (en) | 2015-07-29 |
| CY1123104T1 (en) | 2021-10-29 |
| ES2791039T3 (en) | 2020-10-30 |
| CN106783431A (en) | 2017-05-31 |
| EP2919254A1 (en) | 2015-09-16 |
| EP2919254B1 (en) | 2020-02-26 |
| EP2919254A4 (en) | 2016-08-10 |
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