CN108711836A - A kind of switching mode SPD of built-in disconnector - Google Patents
A kind of switching mode SPD of built-in disconnector Download PDFInfo
- Publication number
- CN108711836A CN108711836A CN201810709378.7A CN201810709378A CN108711836A CN 108711836 A CN108711836 A CN 108711836A CN 201810709378 A CN201810709378 A CN 201810709378A CN 108711836 A CN108711836 A CN 108711836A
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- Prior art keywords
- alloy
- electrically connected
- built
- switching mode
- input terminal
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- 239000000956 alloy Substances 0.000 claims abstract description 83
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 83
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 42
- 239000010439 graphite Substances 0.000 claims abstract description 42
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 40
- 230000011664 signaling Effects 0.000 claims description 24
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000010248 power generation Methods 0.000 claims 1
- 208000025274 Lightning injury Diseases 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/005—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/042—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage comprising means to limit the absorbed power or indicate damaged over-voltage protection device
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/044—Physical layout, materials not provided for elsewhere
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fuses (AREA)
Abstract
The present invention relates to a kind of switching mode SPD having built-in disconnector; graphite alloy component made of being folded including alloy fuse, trigger circuit and by Multi-layer graphite alloy sheet; felt pad is equipped between every two layers of graphite alloy piece; one end of graphite alloy component and the firewire input terminal of power supply or zero curve input terminal are electrically connected; the other end of graphite alloy component is electrically connected with one end of alloy fuse, and the other end of alloy fuse and the ground protection line end of power supply connect；One end of trigger circuit and the firewire input terminal of power supply or zero curve input terminal are electrically connected, and the other end is electrically connected with alloy fuse.Present invention can ensure that the thunder-strike current of T1 classes (10/350 μ s) lightning stroke experiment Iimp≤30KA is not by turning off; thunder-strike current impact range non-blind area, blind spot value; and realize 10A~300A power frequencies short circuit current by when 2 seconds in open-circuit-protection, implementation result is ideal after a large number of experiments.
Description
Technical field
The present invention relates to surge protection technique fields, and in particular to a kind of switching mode SPD of built-in disconnector.
Background technology
Mainly there are 3 kinds of switching mode T1 classes SPD (Surge Protective Device, wave in current lightning protection market both at home and abroad
Surge protector), the inside of the first T1 class SPD is made of two metal balls, and job insecurity, residual voltage is very high (4.0kV or so),
It is worst to the lightning protection effect of equipment, as shown in Figure 1；The inside of second of T1 classes SPD is made of gas-discharge tube, such as Fig. 2
Shown, more stable for the first the opposite metal spherical structure that works, residual voltage is low (2.5kV or so), to the lightning protection of equipment
Effect is preferable, but the highest continuous running voltage value (Uc) of product can only generally arrive 275VAC, once internal breakdown cannot be restored,
Prodigious power current (300A-10kA) will be generated over the ground, and severe patient can burn entire power distribution cabinet or switchgear house, and can not lead to
Cross Visual appearance or remote signalling monitoring product it is normal whether；There is the third T1 class SPD at present, as shown in figure 3, inside is by more
Piece graphite alloy sheet is constituted, and work is relatively stablized, and residual voltage is low (2.5kV or so), preferable to the lightning protection effect of equipment,
But once the gap internal breakdown between graphite flake cannot be restored, and will also generate prodigious power current (300A-10kA) over the ground,
Severe patient can burn entire power distribution cabinet either switchgear house can not equally be monitored by Visual appearance or remote signalling the normal of product with
It is no.
Invention content
For the above deficiency in the prior art, the present invention provides one kind and being resistant to thunder-strike current impact, and ensures power supply
The switching mode SPD of the novel built-in disconnector of system safety.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
A kind of switching mode SPD of built-in disconnector, including alloy fuse, trigger circuit and folded by Multi-layer graphite alloy sheet
Graphite alloy component made of system, is equipped with felt pad between every two layers of graphite alloy piece, and the one of the graphite alloy component
End and the firewire input terminal or zero curve input terminal of power supply are electrically connected, and the other end and the alloy of the graphite alloy component are molten
One end of disconnected device is electrically connected, and the other end of the alloy fuse and the ground protection line end of power supply connect；
One end of the trigger circuit and the firewire input terminal of power supply or zero curve input terminal are electrically connected, the other end and institute
State the electric connection of alloy fuse.
One end of the graphite alloy component is equipped with the first electrode sheet being electrically connected, and the other end is equipped with and its electricity
Property connection second electrode sheet；
The firewire input terminal or zero curve input terminal of the first electrode sheet and power supply be electrically connected, the second electrode sheet with
One end of the alloy fuse is electrically connected；
One end of the trigger circuit is electrically connected with the first electrode sheet, and the other end and the alloy fuse are electrical
Connection.
The trigger circuit is in be arranged in parallel in the disconnector with the Multi-layer graphite alloy sheet.
Further include remote signalling dry contact device, the remote signalling dry contact device is connected with the alloy fuse by linkage
It is connected together；The action of the linkage can be converted into remote signalling dry contact signal by the remote signalling dry contact device, be realized remote
Journey monitors.
The alloy fuse is the alloy fuse for having overheat overcurrent tripping function.
The trigger voltage of the trigger circuit is 1.3-1.7kV.
The number of plies of the graphite alloy piece is 6-10 layers.
The thickness of every layer of graphite alloy piece is 2.0-2.5mm.
The thickness of every layer of felt pad is 0.4-0.6mm.
The insulation cushion material is polytetrafluoroethylene (PTFE).
Technical solution of the present invention has the advantages that：
A. the present invention adds felt pad to constitute in SPD inside bodies by multi-disc graphite alloy piece, and Comparision is stablized, and residual voltage is low
(2.0kV or so), it is good to the lightning protection effect of equipment, additionally by being arranged in parallel trigger circuit in the line so that action
It is more reliable.Present invention can ensure that T1 classes (10/350 μ s) are struck by lightning, the thunder-strike current of experiment Iimp≤30KA is not by turning off, thunder
Hit rush of current range non-blind area, blind spot value, and realize 10A~300A power frequencies short circuit current by when 2 seconds in open-circuit-protection,
Implementation result is good after a large number of experiments.
B. the alloy fuse in the present invention uses the alloy fuse with overheat overcurrent tripping function, once internal stone
Black alloy sheet breakdown cannot restore, and will generate power current over the ground, alloy fuse can be fast when power current reaches 10A or more
Fast thawing is disconnected.
C. it is additionally provided with linkage and remote signalling dry contact device in the present invention, when alloy fuse blows, linkage
It can act simultaneously, clear physics instruction is provided on SPD ontologies, remote signalling dry contact device can convert the action of linkage
It is distally sent out at remote signalling dry contact signal, realizes long-range monitoring function.
D. present device compact overall structure, stable and firm, manufacturing cost is low, conducive to promoting the use of on a large scale.
Description of the drawings
It, below will be to needed in specific implementation mode in order to illustrate more clearly of the specific embodiment of the invention
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present invention, for this field
For those of ordinary skill, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is the first T1 class SPD internal structure schematic diagram；
Fig. 2 is second of T1 class SPD internal structure schematic diagram；
Fig. 3 is the third T1 class SPD internal structure schematic diagram；
Fig. 4 is the switching mode SPD internal structure schematic diagrams of disconnector built in the present invention；
Fig. 5 is the switching mode SPD structure principle charts of disconnector built in the present invention；
Fig. 6 is the schematic diagram that links between linkage and remote signalling dry contact device in the present invention
Reference sign：
1- firewire input terminals；2- zero curve input terminals；
3- graphite alloy components, 31- graphite alloy pieces, 32- felt pads；
4- ground protection line ends；5- trigger circuits；6- alloy fuses；7- linkages；
8- remote signalling dry contact devices；9- first electrode sheets；10- second electrode sheets；20- metal balls；
30- gas-discharge tubes.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment 1
As shown in Figure 4 and Figure 5, the present invention provides a kind of switching mode SPD of built-in disconnector, including alloy fuse 6,
Trigger circuit 5 and the graphite alloy component 3 being made of Multi-layer graphite alloy sheet 31 are set between every two layers of graphite alloy piece 31
There are felt pad 32, the upper surface of top layer's graphite alloy piece 31 electrical with the firewire input terminal 1 of power supply or zero curve input terminal 2 respectively
Connection, the lower face of lowest level graphite alloy piece 31 and one end of alloy fuse 6 are electrically connected, alloy fuse 6 it is another
End is connect with the ground protection line end 4 of power supply；Trigger circuit 5 is preferably in be arranged in parallel in disconnector with Multi-layer graphite alloy sheet 31
Interior, the upper end of trigger circuit 5 is electrically connected with the firewire input terminal 1 of power supply or zero curve input terminal 2 respectively, and lower end fuses with alloy
Device 6 is electrically connected.The present invention is made of in switching mode SPD multi-disc graphite alloy piece 31 plus felt pad 32, and Comparision is stablized,
Residual voltage is low (2.0kV or so), good to the lightning protection effect of equipment, additionally by trigger circuit 5 is arranged in parallel in the line, makes
It must act more reliable.
Pass through the technical program, it is ensured that the lightning current of T1 (10/350 μ s) lightning stroke experiments Iimp≤30KA passes through continuous
Open, lightning current impact range non-blind area, blind spot value, and realize 10~300A power frequencies short circuit current by when 2 seconds in open a way protect
Shield, implementation result is ideal after a large number of experiments.
Further, the upper end of top layer's graphite alloy piece 31 be equipped with first electrode sheet 10, and with first electrode sheet 10
It is electrically connected, is equipped with second electrode sheet 10 in the lower end of lowest level graphite alloy piece 31, and be electrically connected with second electrode sheet 10；
First electrode sheet 9 is electrically connected with the firewire input terminal 1 of power supply or zero curve input terminal 2 respectively, and second electrode sheet 10 is molten with alloy
One end of disconnected device 6 is electrically connected；The upper end of trigger circuit 5 is electrically connected with first electrode sheet 9, the lower end of trigger circuit 5 and conjunction
Golden fuse 6 is electrically connected.
The switching mode SPD structures of disconnector built in the present invention further include linkage 7 and remote signalling dry contact device 8, linkage
Device 7 is connect with alloy fuse 6, and is linked with the fusing of alloy fuse 6.When alloy fuse 6 fuses, linkage
Device 7 can act simultaneously, and clear physics instruction is provided on SPD ontologies, and remote signalling dry contact device 8 is moved linkage 7
It is converted into remote signalling dry contact signal distally to send out, realizes long-range monitoring.
Fig. 6 is the schematic diagram that links between linkage and remote signalling dry contact device in the present invention, remote signalling dry contact device 8 and connection
Dynamic device 7 is located at the both sides of alloy fuse 6, linkage 7 can be prevented to remote signalling dry contact when alloy fuse 6 is normal
8 direction of device is moved, and the stem grafting dotted state of remote signalling dry contact device 8 is fixed at this time；After alloy fuse 6 fuses, linkage dress
Setting 7 can act on mobile to 8 direction of remote signalling dry contact device and touch remote signalling dry contact device 8 in spring force, keep stem grafting dotted
State changes.
There are two parameter value contradictions in common fuse or fuse link, that is, be struck by lightning overcurrent and power frequency mistake
On The Current Value is difficult to balance.If ensuring that lightning stroke overcurrent does not turn off, power frequency blowout current will arrive 500A-5000A very
To higher；If ensuring that power frequency blowout current is 10-300A, will in advance fuse when 5kA-10kA is struck by lightning overcurrent, it is full
The ability of the not required defence lightning stroke of foot.
Alloy fuse 6 in the present invention is the alloy fuse for having overheat overcurrent tripping function, once internal graphite
Alloy sheet breakdown cannot restore, and will generate power current over the ground, alloy fuse can be rapid when power current reaches 10A or more
Fusing.
The trigger voltage 1.3-1.7kV of trigger circuit 5 in the present invention, in advance triggering cannot puncture between alloy graphite flake
Gap, Lightning Over-voltage will strike back trigger circuit and cause to damage, and a large number of experiments proves breakdown to close immediately in 1.5kV or so triggerings
Metal and stone ink sheet gap, makes lightning stroke overcurrent flow through alloy graphite flake, plays anti-lightning strike protective effect；The number of plies of graphite alloy piece 3
It it is 6-10 layers, the thickness of every layer of graphite alloy piece 3 is 2.0-2.5mm, and the thickness of every layer of felt pad 32 is 0.4-0.6mm, insulation
Pad 32 preferably polytetrafluoroethylenes.
Compact overall structure of the present invention, stable and firm, manufacturing cost is low, conducive to promoting the use of on a large scale.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
Variation is still in the protection scope of this invention.
Claims (10)
1. a kind of switching mode SPD of built-in disconnector, which is characterized in that including alloy fuse (6), trigger circuit (5) and by
Graphite alloy component (3) made of Multi-layer graphite alloy sheet (31) folds is equipped between every two layers of graphite alloy piece (31)
Felt pad (32), one end of the graphite alloy component (3) and the firewire input terminal (1) of power supply or zero curve input terminal (2) are electrical
Connection, the other end of the graphite alloy component (3) and one end of the alloy fuse (6) are electrically connected, and the alloy is molten
The other end of disconnected device (6) and the ground protection line end (4) of power supply connect；
One end of the trigger circuit (5) and the firewire input terminal (1) of power supply or zero curve input terminal (2) are electrically connected, another
End is electrically connected with the alloy fuse (6).
2. the switching mode SPD of built-in disconnector according to claim 1, which is characterized in that the graphite alloy component (3)
One end be equipped with the first electrode sheet (9) that is electrically connected, the other end is equipped with the second electrode sheet being electrically connected
(10)；
The first electrode sheet (9) and the firewire input terminal (1) or zero curve input terminal (2) of power supply are electrically connected, second electricity
Pole piece (10) and one end of the alloy fuse (6) are electrically connected；
One end of the trigger circuit (5) is electrically connected with the first electrode sheet (9), the other end and the alloy fuse
(6) it is electrically connected.
3. the switching mode SPD of built-in disconnector according to claim 2, which is characterized in that the trigger circuit (5) and institute
It is in be arranged in parallel in the disconnector to state Multi-layer graphite alloy sheet (3).
4. the switching mode SPD of built-in disconnector according to claim 3, which is characterized in that further include that remote signalling stem grafting is decorated
It sets (8), the remote signalling dry contact device (8) is linked together with the alloy fuse (6) by linkage (7)；It is described
The action of the linkage can be converted into remote signalling dry contact signal by remote signalling dry contact device, realize long-range monitoring.
5. according to the switching mode SPD of any built-in disconnectors of claim 1-4, which is characterized in that the alloy fusing
Device (6) is the alloy fuse for having overheat overcurrent tripping function.
6. the switching mode SPD of built-in disconnector according to claim 5, which is characterized in that the trigger circuit (5) is touched
Power generation pressure is 1.3-1.7kV.
7. the switching mode SPD of built-in disconnector according to claim 6, which is characterized in that the graphite alloy piece (3)
The number of plies is 6-10 layers.
8. the switching mode SPD of built-in disconnector according to claim 7, which is characterized in that every layer of graphite alloy piece
(3) thickness is 2.0-2.5mm.
9. the switching mode SPD of built-in disconnector according to claim 8, which is characterized in that every layer of felt pad (32)
Thickness be 0.4-0.6mm.
10. the switching mode SPD of built-in disconnector according to claim 8, which is characterized in that felt pad (32) material
For polytetrafluoroethylene (PTFE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810709378.7A CN108711836A (en) | 2018-07-02 | 2018-07-02 | A kind of switching mode SPD of built-in disconnector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810709378.7A CN108711836A (en) | 2018-07-02 | 2018-07-02 | A kind of switching mode SPD of built-in disconnector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108711836A true CN108711836A (en) | 2018-10-26 |
Family
ID=63872131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810709378.7A Pending CN108711836A (en) | 2018-07-02 | 2018-07-02 | A kind of switching mode SPD of built-in disconnector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108711836A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102986107A (en) * | 2010-11-08 | 2013-03-20 | 深圳市盾牌防雷技术有限公司 | Surge protection device using metal oxide varistors (MOVs) as the active energy control multiple gap discharging chain |
| CN103715652A (en) * | 2014-01-13 | 2014-04-09 | 上海万谱电器有限公司 | Intelligent backup protection disconnecting device for surge protection devices |
| CN103969529A (en) * | 2014-05-14 | 2014-08-06 | 菲尼克斯亚太电气（南京）有限公司 | Multi-layer gap type lightning arrester indicating circuit |
| CN104638629A (en) * | 2015-02-13 | 2015-05-20 | 菲尼克斯亚太电气（南京）有限公司 | Partial voltage triggered symmetric type overvoltage lightning protection circuit |
| CN105071363A (en) * | 2015-08-14 | 2015-11-18 | 深圳康普盾科技股份有限公司 | SPD backup protector |
| CN105576632A (en) * | 2014-11-08 | 2016-05-11 | 孙麓轩 | Novel surge protection device |
| CN105591376A (en) * | 2016-01-26 | 2016-05-18 | 成都标定科技有限责任公司 | B+C type three-phase power supply surge protector |
| CN105610140A (en) * | 2015-10-12 | 2016-05-25 | 成都兴业雷安电子有限公司 | Lightning protection surge protection device |
| CN108063432A (en) * | 2018-01-30 | 2018-05-22 | 四川中光防雷科技股份有限公司 | A kind of high stability multipole multilayer gap-type surge protector |
| CN208461452U (en) * | 2018-07-02 | 2019-02-01 | 浙江雷泰电气有限公司 | A kind of switching mode SPD of built-in disconnector |
-
2018
- 2018-07-02 CN CN201810709378.7A patent/CN108711836A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102986107A (en) * | 2010-11-08 | 2013-03-20 | 深圳市盾牌防雷技术有限公司 | Surge protection device using metal oxide varistors (MOVs) as the active energy control multiple gap discharging chain |
| CN103715652A (en) * | 2014-01-13 | 2014-04-09 | 上海万谱电器有限公司 | Intelligent backup protection disconnecting device for surge protection devices |
| CN103969529A (en) * | 2014-05-14 | 2014-08-06 | 菲尼克斯亚太电气（南京）有限公司 | Multi-layer gap type lightning arrester indicating circuit |
| CN105576632A (en) * | 2014-11-08 | 2016-05-11 | 孙麓轩 | Novel surge protection device |
| CN104638629A (en) * | 2015-02-13 | 2015-05-20 | 菲尼克斯亚太电气（南京）有限公司 | Partial voltage triggered symmetric type overvoltage lightning protection circuit |
| CN105071363A (en) * | 2015-08-14 | 2015-11-18 | 深圳康普盾科技股份有限公司 | SPD backup protector |
| CN105610140A (en) * | 2015-10-12 | 2016-05-25 | 成都兴业雷安电子有限公司 | Lightning protection surge protection device |
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Effective date of registration: 20190103 Address after: 325604 Sibanqiao Industrial Zone, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province Applicant after: Zhejiang Leitai Electrical Co., Ltd. Address before: 325604 Leitai Electric Co., Ltd., 3rd floor, No. 688 Station Road, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province Applicant before: Li Hongbin |