CN104813432A - 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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- CN104813432A CN104813432A CN201280077275.4A CN201280077275A CN104813432A CN 104813432 A CN104813432 A CN 104813432A CN 201280077275 A CN201280077275 A CN 201280077275A CN 104813432 A CN104813432 A CN 104813432A
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- protection module
- surge
- short circuit
- circuit current
- current flow
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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
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- 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
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- 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
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- 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
Surge protector technical field with short circuit current flow defencive function
The present invention relates to the overvoltage protection field of low-voltage distribution system, more specifically to a kind of voltage-limiting surge protector with short-circuit protection function.Background technology
Due to factors such as impact, power-frequency voltage fluctuation and variation of ambient temperature, for the element of voltage-limit type SPD（Piezo-resistance）Deterioration or short-circuit failure are inherently produced, the failure such as cause heat, short circuit or electric shock constitutes a threat in itself to the people of surrounding, thing or system.Therefore, voltage-limit type SPD must be deteriorated and short-circuit protection to it, i.e., must configure anti-thermal runaway（Thermal protection), anti-short-circuit failure（Short-circuit protection）Disconnector.When deterioration or short-circuit failure occur for voltage-limit type SPD, disconnector can open SPD from system break, to prevent locking system sustained fault, it is to avoid the generation of fire.
In existing voltage-limit type SPD failure protection techniques, external device (ED) is generally used as using over-current protecting element for the disconnector of anti-thermal runaway.Over-current protecting element is generally breaker, fuse, RCD.Because these external device (ED)s are designed, the surging technology performance indications not matched based on power frequency characteristic, when selecting, it is impossible to ensure to realize that characteristic matches in this two aspects performance.It is possible that external short-circuit protection can not bear to impact with the surge that voltage-limit type SPD matches；Phenomenon can not be clearly waited for the overall residual voltage Up values after over-current protecting element and SPD combinations, these problems will reduce security and protecting effect in voltage-limit type SPD use.
Application No. CN200810039516.1; the patent application of entitled " surge protector with back-up protection " discloses a kind of surge protector with back-up protection; it is integrated with short-circuit protection and surge protector integrated design concept, and overcomes the problem of residual voltage that existing voltage-limit type SPD brought using external short-circuit protection device by back-up protection is high.
But this application patent still has very big defect, for example：1st, discharge capacity is small；2nd, short circuit breaking capacity is low；3rd, the protection without the small multiple overload of short circuit current flow, guard interval is small；4th, short-circuit protection protection reliability is not high；5th, do not account for impacting brought system event in Large Copacity surge
The protection problem of temporary overvoltage caused by barrier；6th, product overall volume is big.
The content of the invention
The present invention is directed to propose a kind of voltage-limiting surge protector with short-circuit protection function.
According to one embodiment of the invention, a kind of integrated surge protector with short circuit current flow defencive function, including surge protection module and short circuit current flow protection module are disclosed.Surge protection module is released and suppresses surge current and voltage, and surge protection module is inserting module.The integrated short-circuit protection function of short circuit current flow protection module and plug pedestal integrated design, short circuit current flow protection module is renewable type, and provide short-circuit protection for surge protection module installs with plug.
In one embodiment, short circuit current flow protection module includes：Base and lid, moving contact and static contact, Lei Min switches, electromagnetic mechanism, elastic lug plate, dividing plate, the first binding post, the second binding post, the first resilient prongs and the second resilient prongs.Cover the shell that short circuit current flow protection module is formed on base.Static contact includes stationary contact bracket.Lei Min switches connection static contact and elastic lug plate.Electromagnetic mechanism includes iron yoke and coil.The elastic flexible pin of lug plate, upper-end bent extension and lower end extension point.Dividing plate is arranged on base, dividing plate and base formation self-extinguishment shape arc-chutes.The outside phase line of first binding post connection, the outside phase line of the second binding post connection or ground wire.First resilient prongs and the second resilient prongs grafting surge protection module, the first resilient prongs connect the first binding post, and the second resilient prongs connect the second binding post.
In one embodiment, to ensure that it is equidirectional to flow through the electric current of moving contact rack and stationary contact bracket, stationary contact bracket is U-shaped rotary support.
In one embodiment, it is the requirement of the high current limiting capacity of guarantee, the high value coil for being more than 200 Γ Ω using impedance carries out current limliting.Lei Min is switched is connected to stationary contact bracket with this high value coils from parallel connection of coils, the first end of Lei Min switches.
In one embodiment, the second end of Lei Min switches and the Spring pins of elastic lug plate are connected with each other, and elastic lug plate provides elastic pressure and compresses the quick switch of thunder.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 and the second end of coil are welded to each other connection, and the lower end extension point of elastic lug plate passes through lug plate
It is connected with each other with the first pin.
In one embodiment, dividing plate is provided with the grid of trapezoidal shape.
In one embodiment, moving contact is that silver tungsten material, static contact are silver-colored tungsten carbide alloy material.
In one embodiment, Lei Min switches are ceramic gas discharge tube, and nominal DC breakdown voltage is more than 250V.
In one embodiment, short circuit current flow protection module also includes the remote alarming device that handle, operating mechanism, clamp and selectivity are installed.
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 and the first resilient prongs and the second resilient prongs grafting.
In one embodiment, product overall width is 27mm or 36mm, and the width of surge protection module is 9mm or 18mm;Surge protection module is provided with the fin of different height in both sides, and the corresponding surface of short circuit current flow protection module is provided with the groove of mutual respective heights, prevents from mispluging and pull out.
The surge protector with short circuit current flow defencive function of the present invention has following advantage：1) cooperation between lightning impulse current and power frequency short circuit current flow is solved, while carrying out the requirement of high current limiting capacity to bulk loop, it is preferred to use the big resistance of positive temperature coefficient, such as impedance are more than 200m Ω high value coil.Current limiting capacity is strong, that is to say, that the protective capability of short circuit current flow is high, and short circuit breaking capacity is good；
2) small multiple overload current is protected, the protection minimum of low short circuit current flow reaches 10A, expands short-circuit protection scope, is applicable to any earthed system；
3) the TOV resistance patterns of renewable type are proposed first, are eliminated the flame under traditional TOV failures and resistance patterns, have been prevented disaster hidden-trouble, security reliability is very high；
4) change makes the principle that contact is denounceed out in advance using electrodynamic repulsion force, will not occur misoperation situation when Large Copacity lightning impulse current impacts, it is possible to increase the service life of contact；
5) residual voltage Up is controllable, power current and surge current binary channels rapid translating sensitivity and reliability height.Frequently quick electric current conversion switch not only allows for system overvoltage, has also taken into account switching overvoltage, it is therefore prevented that the misoperation of Lei Min switches, it is ensured that the stability and short-circuit breaking capacity of product；
6) matched using the contact material of resistance to ablation, ablation resistance and anti-electrical wear ability are high, the excursion of the lower contact pressure of Large Copacity lightning current impact is small；
7) connected mode that Lei Min switches are contacted using elastic component, it is ensured that integrity during Lei Min switch assemblings, is easy to assembling；
8) cooperation of the attracting big resistance current limliting with positive temperature coefficient of same direction current reduces arc extinguishing requirement between contact, increases bleed passage and accelerates gas quickly to exclude, merely with gas blast arc-quenching, small product size is more minimized.Brief description of the drawings
The above and other features of the present invention, property and advantage will be become readily apparent from by description with reference to the accompanying drawings and examples, in the accompanying drawings, and identical reference represents identical feature all the time, wherein：
Fig. 1 discloses the overall structure figure of the surge protector with short circuit current flow defencive function according to one embodiment of the invention.
Fig. 2 discloses the structure chart of the surge protection module in the surge protector with short circuit current flow defencive function according to one embodiment of the invention.
Fig. 3 discloses the surge protection module in the surge protector with short circuit current flow defencive function according to one embodiment of the invention and the structure chart of pedestal grafting.
Fig. 4 discloses the cut-away view of the short circuit current flow protection module in the surge protector with short circuit current flow defencive function according to one embodiment of the invention.
Fig. 5 discloses the structure chart of the dividing plate of the short circuit current flow protection module in the surge protector with short circuit current flow defencive function according to one embodiment of the invention.
Fig. 6 discloses the structure chart of the self-extinguishment shape arc-chutes of the short circuit current flow protection module in the surge protector with short circuit current flow defencive function according to one embodiment of the invention.Embodiment
The present invention is directed to propose a kind of surge protector with short circuit current flow defencive function, including surge
Protection module and short circuit current flow protection module.Surge protection module is released and suppresses surge current and voltage, and surge protection module is inserting module.Short circuit current flow protection module is integrated in pedestal, and short circuit current flow protection module provides short-circuit protection for surge protection module and installed with plug.
Short circuit current flow protection module includes：Base and lid, moving contact and static contact, Lei Min switches, electromagnetic mechanism, elastic lug plate, dividing plate, the first binding post, the second binding post, the first resilient prongs and the second resilient prongs.Cover the shell that pedestal is formed on base.Static contact includes stationary contact bracket, and stationary contact bracket is U-shaped rotary support.Electromagnetic mechanism includes iron yoke and coil, and coil is connected to the high resistance measurement that impedance is more than 200 Γ Ω, with very strong current limiting capacity.Lei Min switches connection static contact and elastic lug plate.Lei Min is switched and coils from parallel connection of coils, and the first end of Lei Min switches is connected to stationary contact bracket.Second end of Lei Min switches and the Spring pins of elastic lug plate are connected with each other, and elastic lug plate provides elastic pressure and compresses the quick switch of thunder.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 and the second end of coil are welded to each other connection, and the lower end extension point of elastic lug plate is connected with each other by lug plate and the first pin.The elastic flexible pin of lug plate, upper-end bent extension and lower end extension point.Dividing plate is arranged on base, and dividing plate is provided with the grid of trapezoidal shape, dividing plate and base formation self-extinguishment shape arc-chutes.The outside phase line of first binding post connection, the outside phase line of the second binding post connection or ground wire.First resilient prongs and the second resilient prongs grafting surge protection module, the first resilient prongs connect the first binding post, and the second resilient prongs connect the second binding post.
Moving contact is that silver tungsten material, static contact are silver-colored tungsten carbide alloy material.Lei Min switches are ceramic gas discharge tube, and nominal DC breakdown voltage is more than 250V.Short circuit current flow protection module also includes the remote alarming device that handle, operating mechanism, clamp and selectivity are 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 the 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 flow protection module is provided with corresponding groove.
The surge protector with short circuit current flow defencive function of the present invention has following several features：
1) short circuit current flow protection is carried out using the means of the big resistance increase current limliting of positive temperature coefficient, selected
Impedance is more than 20 θ Γ Τ Ω high impedance magnet coil; product short circuit breaking capacity is high, while be conducive to action of the electromagnetic mechanism under low fault current, and minimum instantaneous trip current value is small; product short-circuit protection scope is big, is applicable to any earthed system；
2) the TOV resistance patterns of renewable type, without Mars and flame phenomenon；
3) with the close support current of dynamic/static contact in the same direction so as to reduce the principle of electrodynamic repulsion force, design uses stationary contact bracket, for U-shaped rotary type structure, so that the side of U-shaped rotary type structure stand of the moving contact with installing static contact is in the presence of electric power, with the active force attracted each other, when lightning impulse current impacts, delay the reaction time that moving contact reprimand is opened, moving contact is in the presence of having attracted simultaneously, the impulsive force that reprimand is subject to when opening reduces, therefore operating mechanism tripping will not be caused to produce misoperation because of impact, the design that reprimand is opened only is acted on by electromagnetic mechanism with reference to the current limliting and contact of high impedance, the stability of operating mechanism is very good；
4) before the quick switch of thunder in the quick electric current conversion switch of frequency is to be connected in parallel on magnet coil in the connection of electricity; that is when lightning impulse current passes through; it is to first pass through Lei Min switches to release; then later electric current of releasing again passes through magnet coil; the surge energy that magnet coil is carried is reduced, the surge ability to bear of short circuit current flow protection module is improved；
5) arc-chutes of self-extinguishment shape are formd by being assemblied in interiors of products, replace original manifold type arc-chutes, small product size is more minimized.So-called self-extinguishment shape arc-chutes, it is grid of the design with trapezoidal shape on product parts, by Product Assembly, the arc-chutes of a half-sealed are formed in dynamic/static contact opening and closing place, and dynamic/static contact is completely enclosed among the arc-chutes of this half-sealed.Because the current limliting of big resistance, when moving contact reprimand is opened so that less, the very first time carries out arc extinguishing to the arc current that product is produced in the case of failure high current by air-blowing；
6) moving contact is that silver tungsten material, static contact are silver-colored tungsten carbide alloy material；
7) the nominal DC breakdown voltage of Lei Min switches is more than 250V;
8) surge protection module has anti-error plug function.
Fig. 1 Fig. 6 discloses the structure chart of the surge protector with short circuit current flow defencive function according to one embodiment of the invention.As shown in Fig. 1 Fig. 6：This have the surge protector 1 00 of short-circuit protection function aim to solve the problem that when existing surge protector is applied using external over-current protection device be back-up protection
The problem of brought.There is the surge protector 100 of short circuit current flow defencive function to include short circuit current flow protection module 101 and surge protection module 102 for this; the short circuit current flow protection module 101 stated is used to protect surge protection module 102; surge protection module 102 is releasing and suppress for surge current and voltage; short circuit current flow protection module 101 is integrated with the pedestal for installing surge protection module 102, and surge protection module 102 is plug type.
Short circuit current flow protection module 101 includes base 103, lid 105, moving contact 106, static contact 107, Lei Min switches 108, electromagnetic mechanism 109, handle 110, operating mechanism 111, elastic lug plate 112, dividing plate 113, clamp 114, the first binding post 115, the second binding post 116, the first resilient prongs 117 and the second resilient prongs 118 and the remote alarming device 104 that can selectively install.
Lid 105 covers the shell that pedestal, i.e. surge protection module 102 are formed on base 103.Static contact 107 includes stationary contact bracket 107a, stationary contact bracket 107a is the U-shaped rotary support using U-shaped rotary type structure, to ensure that the flow direction for flowing through static contact 107 and the electric current of moving contact 106 is consistent, so cause the side of close moving contact of U-shaped rotary support of the moving contact 106 with installing static contact in the presence of electric power, with the active force attracted each other, ensure under the impact of high current capacity, delay the reaction time that moving contact reprimand is opened, and impulsive force of the moving contact when reprimand is opened is small, the misoperation of the tripping of operating mechanism 111 will not be caused.
Electromagnetic mechanism 109 includes iron yoke 109a and coil 109b, and coil 109b includes high resistance measurement, and high resistance measurement carries out current limliting to coil 109b, and the impedance of high resistance measurement is more than 30 θ Γ Τ Ω.The coil 109b number of turn is more than 100 circles, is so conducive to action of the electromagnetic mechanism under low fault current, while ensureing that short circuit current flow protection module has high breaking capacity.
Lei Min switches 108 are relations in parallel in the connection of electricity with the coil 109b of electromagnetic mechanism 109, further, the first end of Lei Min switches 108 is connected with each other with the stationary contact bracket 107a of the U-shaped rotary type of static contact 107, second end of Lei Min switches 108 and the Spring pins of elastic lug plate 112 are connected with each other, and providing elastic pressure by elastic lug plate 112 compresses the quick switch 108 of thunder.The flexible pin of elastic lug plate 112, upper-end bent extension and lower end extension point.The stationary contact bracket 107a upper end extension of the U-shaped rotary type of static contact 107 is installed with coil 109b's
First end is welded in iron yoke 109a extension together.The upper-end bent extension of elastic lug plate 1 12 is welded to each other with coil 109b the second end and is connected.The lower end extension of elastic lug plate 1 12 point is connected with each other by the pin 1 17 of lug plate 1 19 and first.Such linked vector graph; it ensure that the quick switch in parallel of thunder is before electromagnetic mechanism coil on electricity; in particular; when surge current is invaded; when the energy of surge is by stationary contact bracket, released first by the quick switch of thunder, the electric current after then releasing just passes through magnet coil; the surge energy that big resistance coil is carried so is greatly reduced, the surge ability to bear of short circuit current flow protection module is improved.
Base 103 is assemblied in the arc-chutes 120 that interiors of products forms a self-extinguishment shape with dividing plate 1 13.Specifically, the grid of trapezoidal shape is provided with dividing plate 1 13, by the close fit of both base 103 and dividing plate 1 13, the arc-chutes 120 of a half-sealed are formed in dynamic/static contact opening and closing place, dynamic/static contact is completely enclosed among this arc-chutes.When moving contact reprimand opens generation electric arc, electric arc is moved downward under electrodynamic action along the side of the support of U-shaped revolving structure, and very first time electric arc is directly cut by trapezoidal grid, reaches the effect for extinguishing electric arc.
Short circuit current flow protection module 101 is integrated in the pedestal for installing surge protection module 102; the first and second binding posts for connecting external cabling are respectively positioned in short circuit current flow protection module; the first binding post 1 15 in short circuit current flow protection module is to be used to be connected with outside phase line, and the second binding post 1 16 is to be used to be connected with outside phase line or ground wire.The first binding post 1 15 in short circuit current flow protection module is to be connected by the connection of internal-series electricity with installing the first pin 1 17 of surge protection module; and the second binding post 1 16 is connected with each other with installing the second pin 1 18 of surge protection module, it is ensured that short circuit current flow 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 to be inserted by its inserted sheet 123 of the first inserted sheet 122 and second in the pin 1 18 of corresponding first pin 1 17 and second in short circuit current flow protection module and realize what is be connected with each other.Surge protection module is provided with different height fin 121 in its both sides, and installs the groove provided with correspondence different height on corresponding surface in short circuit current flow protection module, it is ensured that surge protection module installs reliable, will not carry out mispluging pulling out operation.
Surge protection module 102 is designed as width for 9mm or 18mm, meets International Design convention,
It is stronger that module installs compatibility.
Moving contact 106 is that silver tungsten material, static contact 107b are silver-colored tungsten carbide alloy material; corrode of the Slow surge energies to dynamic and static contact can very advantageously be subtracted; ensure after the impact of multiple high current capacity; short circuit current flow protection module is still effective, substantially increases service life.
Lei Min switches 108 are switch element, it is preferred to use inflatable discharge tube, such as ceramic gas discharge tube, nominal DC breakdown voltage are more than 250V.
The surge protector with short circuit current flow defencive function of the present invention has following advantage：
1) cooperation between lightning impulse current and power frequency short circuit current flow is solved, while carrying out the requirement of high current limiting capacity to bulk loop, it is preferred to use the big resistance of positive temperature coefficient, such as impedance are more than 200m Ω high value coil.Current limiting capacity is strong, that is to say, that the protective capability of short circuit current flow is high, and short circuit breaking capacity is good；
2) small multiple overload current is protected, the protection minimum of low short circuit current flow reaches 10A, expands short-circuit protection scope, is applicable to any earthed system；
3) the TOV resistance patterns of renewable type are proposed first, are eliminated the flame under traditional TOV failures and resistance patterns, have been prevented disaster hidden-trouble, security reliability is very high；
4) change makes the principle that contact is denounceed out in advance using electrodynamic repulsion force, will not occur misoperation situation when Large Copacity lightning impulse current impacts, it is possible to increase the service life of contact；
5) residual voltage Up is controllable, power current and surge current binary channels rapid translating sensitivity and reliability height.Frequently quick electric current conversion switch not only allows for system overvoltage, has also taken into account switching overvoltage, it is therefore prevented that the misoperation of Lei Min switches, it is ensured that the stability and short-circuit breaking capacity of product；
6) matched using the contact material of resistance to ablation, ablation resistance and anti-electrical wear ability are high, the excursion of the lower contact pressure of Large Copacity lightning current impact is small；
7) connected mode that Lei Min switches are contacted using elastic component, it is ensured that integrity during Lei Min switch assemblings, is easy to assembling；
8) cooperation of the attracting big resistance current limliting with positive temperature coefficient of same direction current reduces arc extinguishing requirement between contact, increases bleed passage and accelerates gas quickly to exclude, merely with gas blast arc-quenching, small product size is more minimized.
Above-described embodiment be available to be familiar with person in the art realize or using the present invention; those skilled in the art can make the invention thought of various modifications or change without departing from the present invention to above-described embodiment; thus protection scope of the present invention is not limited by above-described embodiment, and should be the maximum magnitude for meeting the inventive features that claims are mentioned.
Claims (1)
- ClaimA kind of surge protectors with short circuit current flow defencive function of 1, it is characterised in that including：Surge protection module, surge protection module is released and suppresses surge current and voltage, and surge protection module is inserting module；Short circuit current flow protection module, is integrated in pedestal, and short circuit current flow protection module provides short-circuit protection for the surge protection module and installed with plug.2. there is the surge protector of short circuit current flow defencive function as claimed in claim 1, it is characterised in that the short circuit current flow protection module includes：Base and lid, cover the shell that pedestal is formed on base；Moving contact and static contact, static contact include stationary contact bracket；Lei Min is switched, Lei Min switches connection static contact and elastic lug plate；Electromagnetic mechanism, electromagnetic mechanism includes iron yoke and coil；Elastic lug plate, the elastic flexible pin of lug plate, upper-end bent extension and lower end extension point；Dividing plate, dividing plate is arranged on base, dividing plate and base formation self-extinguishment shape arc-chutes；First binding post, the outside phase line of the first binding post connection；Second binding post, the outside phase line of the second binding post connection 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 first 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 flow defencive function as claimed in claim 2, it is characterised in thatThe stationary contact bracket is U-shaped rotary support, and static contact is consistent with moving contact current direction；The magnet coil is connected to the high resistance measurement that impedance is more than 50 θ Γ Τ Ω,； Lei Min is switched and coils from parallel connection of coils, and the first end of Lei Min switches is connected to stationary contact bracket.4. there is the surge protector of short circuit current flow defencive function as claimed in claim 3, it is characterised in thatSecond end of Lei Min switches and the Spring pins of elastic lug plate are connected with each other, and elastic lug plate provides elastic pressure and compresses the quick switch of thunder；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 and the second end of coil are welded to each other connection, and the lower end extension point of elastic lug plate is connected with each other by lug plate and the first pin.5. there is the surge protector of short circuit current flow defencive function as claimed in claim 3, it is characterised in that the dividing plate is provided with the grid of trapezoidal shape.6. there is the surge protector of short circuit current flow defencive function as claimed in claim 2, it is characterised in thatDescribed 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 flow defencive function as claimed in claim 2, it is characterised in thatThe quick switch of thunder is ceramic gas discharge tube, and discharge voltage is more than 250V.8. there is the surge protector of short circuit current flow defencive function as claimed in claim 2, it is characterised in that the short circuit current flow protection module also includes the remote alarming device that handle, operating mechanism, clamp and selectivity are installed.9. there is the surge protector of short circuit current flow defencive function, its feature as claimed in claim 2 It is, the 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 the second resilient prongs grafting.10. there is the surge protector of short circuit current flow defencive function as claimed in claim 2, it is characterised in thatThe width of surge protection module is 9mm or 18mm;Surge protection module is provided with different height fin in both sides, and the corresponding surface of short circuit current flow protection module is provided with the corresponding groove with respective heights.
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| 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 |
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|---|---|---|---|
| PCT/CN2012/084450 WO2014071628A1 (en) | 2012-11-12 | 2012-11-12 | Surge protection device having short-circuit current protection function |
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| CN201611176133.XA Division CN106783431B (en) | 2012-11-12 | 2012-11-12 | Surge protector with short circuit current defencive function |
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| CN104813432A true CN104813432A (en) | 2015-07-29 |
| CN104813432B CN104813432B (en) | 2017-02-22 |
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| CN201280077275.4A Active CN104813432B (en) | 2012-11-12 | 2012-11-12 | Surge protection device having short-circuit current protection function |
| CN201611176133.XA Active CN106783431B (en) | 2012-11-12 | 2012-11-12 | Surge protector with short circuit current defencive function |
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| CN (2) | CN104813432B (en) |
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| CN110323730A (en) * | 2019-06-05 | 2019-10-11 | 杭州国民电气有限公司 | A kind of surge protector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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- 2012-11-12 CN CN201611176133.XA patent/CN106783431B/en active Active
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| CN110323730B (en) * | 2019-06-05 | 2024-04-23 | 杭州国民电气有限公司 | Surge protector |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2919254B1 (en) | 2020-02-26 |
| ES2791039T3 (en) | 2020-10-30 |
| EP2919254A4 (en) | 2016-08-10 |
| EP2919254A1 (en) | 2015-09-16 |
| CY1123104T1 (en) | 2021-10-29 |
| CN106783431B (en) | 2018-09-07 |
| WO2014071628A1 (en) | 2014-05-15 |
| CN106783431A (en) | 2017-05-31 |
| CN104813432B (en) | 2017-02-22 |
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