CN208112225U - A kind of SPD back-up protection device of new principle structure - Google Patents
A kind of SPD back-up protection device of new principle structure Download PDFInfo
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- CN208112225U CN208112225U CN201820009362.0U CN201820009362U CN208112225U CN 208112225 U CN208112225 U CN 208112225U CN 201820009362 U CN201820009362 U CN 201820009362U CN 208112225 U CN208112225 U CN 208112225U
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- fuse
- protective module
- phase protective
- phase
- resistance
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Abstract
The utility model belongs to the technical field of SPD reserve protection; more particularly to a kind of SPD back-up protection device of new principle structure; the A phase protective module, B phase protective module, C phase protective module inlet wire connecting terminal connect respectively with A, B, C three-phase circuit; the A phase protective module includes resistance, fuse, gas-discharge tube; the resistance and fuse series connection; resistance and fuse are re-used as that an entirety is in parallel with gas-discharge tube, and the B phase protective module, the structure of C phase protective module are identical as the structure of A phase protective module.By the technical solution of this case, different grades of gas-discharge tube is installed, it is ensured that T1（10/350μs）The lightning stroke experiment kilo-ampere of Iimp≤25, T2（8/20μs）The lightning current of lightning stroke 0 ~ 120 kilo-ampere of experiment realizes that realization disconnects protection in 2 seconds when 1 ~ 300 ampere of power frequency short circuit current passes through by not turning off.
Description
Technical field
The utility model belongs to SPD reserve protection technical field, more particularly to more particularly to a kind of new principle knot
The SPD back-up protection device of structure.
Background technique
SPD is Surge Protector, is a kind of to provide security protection for various electronic equipments, instrument and meter, communication line
Electronic device, when generating peak current or voltage suddenly because of extraneous interference in electric loop or communication line, wave
Shunting can be connected in surge protector in a very short period of time, to avoid damage of the surge to other equipment in circuit.
Currently, causing wave because under Lightning Electromagnetic Pulse rush of current or under the impact of power supply-distribution system power frequency fault overvoltage
Phenomena such as surge protector breakdown, short circuit, electric leakage, occurs so as to cause serious accidents such as power supply-distribution system tripping, short circuit, burnings.Needle
To problem above, technical staff has developed a kind of back-up protection device, i.e. the back-up protection device of Surge Protector.Back-up protection device string
In the protection circuit, when short circuit phenomenon occurs in SPD, circuit can be cut off rapidly connection, avoid protective switch from leapfrog occur de-
Button phenomenon and cause the wide-area power outage of power-supply system, while can prevent power current from flowing into SPD and cause short-circuit fire
Phenomenon occurs.
Being used for SPD standby overcurrent protective device both at home and abroad now is mainly fuse or breaker, but both overcurrents are protected
The initiation value of protection unit is not easy to choose, if initiation value selection is improper, is easy for leading to phenomenon on fire or be impacted by lightning current quick-fried
Fried or disconnection phenomenon, brings great hidden danger to the production and living of the mankind.
Summary of the invention
The utility model provides a kind of SPD back-up protection device of new principle structure, to solve to mention in above-mentioned background technique
The undesirable problem of fuse or breaker implementation result out.
The technical issues of the utility model is solved is realized using following technical scheme：
A kind of SPD back-up protection device of new principle structure, it is characterised in that：Mould is protected including the A phase in exchange 380V
Block, B phase protective module, C phase protective module, the inlet wire wiring of the A phase protective module, B phase protective module, C phase protective module
Terminal is connect with A, B, C three-phase circuit respectively, and the A phase protective module includes resistance, fuse, gas-discharge tube, the electricity
Resistance and fuse series connection, it is in parallel with gas-discharge tube that resistance and fuse are re-used as an entirety, the B phase protective module, C phase
The structure of protective module is identical as the structure of A phase protective module, the A phase protective module, B phase protective module, C phase protective module
Outlet connecting terminal be connected with Surge Protector.
Further include bottom case, upper cover is equipped with above the bottom case, is equipped among the upper cover and plugs block, below the plug block
Ceramic cartridge fuse, concatenated electricity are equipped with equipped with the first connection ring, the second connection ring, in first connection ring, the second connection ring
Resistance and fuse are located in ceramic cartridge fuse, and the other end of the resistance is connected with the first connecting line, the fuse it is another
End is connected with the second connecting line, and described ceramics cartridge fuse one end is equipped with the first metal cap, and the other end is equipped with the second metal cap, described
Gas-discharge tube is located in bottom case, upper connection sheet is equipped at the top of the gas-discharge tube, bottom is connected with lower connection sheet, under described
It is equipped with the first metal connecting sheet above connection sheet, is equipped with the first fuse deck above first metal connecting sheet, described first
Fuse deck, the first metal connecting sheet, lower connection sheet are fixedly connected by the first connector, and the is equipped with above the upper connection sheet
Two metal connecting sheets, the second metal connecting sheet top are equipped with the second fuse deck, the second fuse deck, the second metal
Connection sheet, upper connection sheet are fixed by the second connector.
First connector, the second connector are bolt or rivet.
Described ceramics cartridge fuse one end is located in the first fuse deck, and the other end is located in the second fuse deck.
The A phase protective module, B phase protective module, C phase protective module are by resistance, fuse, gas-discharge tube three
Kind electronic component is constituted.
The beneficial effects of the utility model are：
The technical program be the improvement that is carried out on the basis of the technical solution of Patent No. 201720666860.8 with it is complete
Kind, improved main purpose is that can meet the new standard of country's formulation, by the technical solution of this case, installs different brackets
Gas-discharge tube, it is ensured that T1（10/350μs）The lightning stroke experiment kilo-ampere of Iimp≤25, T2（8/20μs）Lightning stroke experiment 0 ~ 120
The lightning current of kilo-ampere is not by turning off, lightning current impact range non-blind area, blind spot value, and realizes 1 ~ 300 ampere of power frequency short circuit
It is realized in 2 seconds when electric current passes through and disconnects protection, implementation result is ideal after a large number of experiments.In addition the gas-discharge tube of this case
It is fixed with metal connecting sheet using bolt or rivet, installs and dismantle very convenient, avoid welding by lightning current impact desoldering
Be not easy the problem of being connected and fixed, equipment overall structure is compact, and stable and firm, manufacturing cost is low, is conducive to a wide range of promote the use of.
Detailed description of the invention
Fig. 1 is the principles of the present invention schematic diagram；
Fig. 2 is the structural schematic diagram of the utility model；
Fig. 3 is the structural schematic diagram of the utility model；
In figure：1- back-up protection device, 2- gas-discharge tube, 3- resistance, 4- fuse, 5- Surge Protector, 6- bottom case, 7-
Upper cover, 8- plug block, the first connection ring of 9-, the second connection ring of 10-, 11- ceramics cartridge fuse, the first connecting line of 12-, 13- second
Connecting line, the first metal cap of 14-, the second metal cap of 15-, the upper connection sheet of 16-, connection sheet under 17-, the first metal connecting sheet of 18-,
19- the first fuse deck, the first connector of 20-, the second metal connecting sheet of 21-, 22- the second fuse deck, the connection of 23- second
Part.
Specific embodiment
A kind of SPD back-up protection device 1 of new principle structure, including including A phase protective module, the B phase in exchange 380V
Protective module, C phase protective module, A phase protective module, B phase protective module, C phase protective module inlet wire connecting terminal respectively with
A, B, C three-phase circuit connect, and A phase protective module includes resistance 3, fuse 4, gas-discharge tube 2, and resistance 3 and fuse 4 are gone here and there
Connection, resistance 3 and fuse 4 are re-used as that an entirety is in parallel with gas-discharge tube 2, the knot of B phase protective module, C phase protective module
Structure is identical as the structure of A phase protective module, the outlet connecting terminal company of A phase protective module, B phase protective module, C phase protective module
It is connected to Surge Protector 5.
Further include bottom case 6, upper cover 7 is equipped with above bottom case 6, plug block 8 is equipped among upper cover 7, plugs and be equipped with the below block 8
One connection ring 9, the second connection ring 10, the first connection ring 9, the second connection ring 10 are interior equipped with ceramic cartridge fuse 11, concatenated resistance 3
It is located in ceramic cartridge fuse 11 with fuse 4, the other end of resistance 3 is connected with the first connecting line 12, and the other end of fuse 4 connects
It is connected to the second connecting line 13, ceramic 11 one end of cartridge fuse is equipped with the first metal cap 14, and the other end is equipped with the second metal cap 15, gas
Discharge tube 2 is located in bottom case 6, upper connection sheet 16 is equipped at the top of gas-discharge tube 2, bottom is connected with lower connection sheet 17, lower connection
It is equipped with the first metal connecting sheet 18 above piece 17, is equipped with the first fuse deck 19, the first fuse above the first metal connecting sheet 18
Deck 19, the first metal connecting sheet 18, lower connection sheet 17 are fixedly connected by the first connector 20, are equipped with above upper connection sheet 16
Second metal connecting sheet 21 is equipped with the second fuse deck 22, the second fuse deck 22, the second gold medal above second metal connecting sheet 21
Belong to connection sheet 21, upper connection sheet 16 is fixedly connected by the second connector 23.
First connector 20, the second connector 23 are bolt or rivet.
Ceramic 11 one end of cartridge fuse is located in the first fuse deck 19, and the other end is located in the second fuse deck 22.
A phase protective module, B phase protective module, C phase protective module are by resistance 3, fuse 4, gas-discharge tube 2 three
Kind electronic component is constituted.
Implementation principle：
SPD back-up protection device and SPD are cascaded structure, mainly shield, should be generated by lightning stroke to SPD
Make when voltage dash current normal through, and SPD occur short circuit when need in 2 seconds carry out disconnect protection, embody
In the technical scheme, then when being struck by lightning, due to the blocking of resistance, lightning current selection makes thunder and lightning by gas-discharge tube
Stream flows to SPD normal through releasing, and SPD is made to play a role, when damage short circuit occurs in SPD, since gas-discharge tube is insulation
Body, electric current selection are disconnected, are protected to SPD by resistance and fuse, fuse.
The embodiments of the present invention are described in detail above, but the content is only the preferable of the utility model
Embodiment should not be considered as limiting the scope of the present invention, made according to the scope of application of this utility model equal
Deng variation and improvement etc., should still belong within the patent covering scope of the utility model.
Claims (5)
1. a kind of SPD back-up protection device of new principle structure, it is characterised in that：Including exchange 380V in A phase protective module,
B phase protective module, C phase protective module, the inlet wire connecting terminal of the A phase protective module, B phase protective module, C phase protective module
Connect respectively with A, B, C three-phase circuit, the A phase protective module includes resistance, fuse, gas-discharge tube, the resistance and
Fuse series connection, resistance and fuse are re-used as that an entirety is in parallel with gas-discharge tube, and the B phase protective module, C phase are protected
The structure of module is identical as the structure of A phase protective module, the A phase protective module, B phase protective module, C phase protective module go out
Line connecting terminal is connected with Surge Protector.
2. a kind of SPD back-up protection device of new principle structure according to claim 1, it is characterised in that：It further include bottom
Shell is equipped with upper cover above the bottom case, is equipped with plug block among the upper cover, below the plug block equipped with the first connection ring,
Second connection ring, first connection ring, the second connection ring are interior to be equipped with ceramic cartridge fuse, and concatenated resistance and fuse are located at pottery
In porcelain cartridge fuse, the other end of the resistance is connected with the first connecting line, and the other end of the fuse is connected with the second connection
Line, described ceramics cartridge fuse one end are equipped with the first metal cap, and the other end is equipped with the second metal cap, and the gas-discharge tube is located at bottom
In shell, upper connection sheet is equipped at the top of the gas-discharge tube, bottom is connected with lower connection sheet, and the is equipped with above the lower connection sheet
One metal connecting sheet, the first metal connecting sheet top are equipped with the first fuse deck, the first fuse deck, the first metal
Connection sheet, lower connection sheet are fixedly connected by the first connector, and the second metal connecting sheet is equipped with above the upper connection sheet, described
The second fuse deck is equipped with above second metal connecting sheet, the second fuse deck, the second metal connecting sheet, upper connection sheet are logical
The second connector is crossed to fix.
3. a kind of SPD back-up protection device of new principle structure according to claim 2, it is characterised in that：Described first
Connector, the second connector are bolt or rivet.
4. a kind of SPD back-up protection device of new principle structure according to claim 3, it is characterised in that：The ceramics
Cartridge fuse one end is located in the first fuse deck, and the other end is located in the second fuse deck.
5. a kind of SPD back-up protection device of new principle structure according to claim 4, it is characterised in that：The A phase is protected
Protecting module, B phase protective module, C phase protective module is made of three kinds of resistance, fuse, gas-discharge tube electronic components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820009362.0U CN208112225U (en) | 2018-01-04 | 2018-01-04 | A kind of SPD back-up protection device of new principle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820009362.0U CN208112225U (en) | 2018-01-04 | 2018-01-04 | A kind of SPD back-up protection device of new principle structure |
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| Publication Number | Publication Date |
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| CN208112225U true CN208112225U (en) | 2018-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820009362.0U Active CN208112225U (en) | 2018-01-04 | 2018-01-04 | A kind of SPD back-up protection device of new principle structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947143A (en) * | 2018-01-04 | 2018-04-20 | 北京广荣防雷技术有限公司 | A kind of SPD back-up protection devices of new principle structure |
-
2018
- 2018-01-04 CN CN201820009362.0U patent/CN208112225U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947143A (en) * | 2018-01-04 | 2018-04-20 | 北京广荣防雷技术有限公司 | A kind of SPD back-up protection devices of new principle structure |
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