CN2622899Y - Surge recognition lightning protection - Google Patents
Surge recognition lightning protection Download PDFInfo
- Publication number
- CN2622899Y CN2622899Y CN 03221829 CN03221829U CN2622899Y CN 2622899 Y CN2622899 Y CN 2622899Y CN 03221829 CN03221829 CN 03221829 CN 03221829 U CN03221829 U CN 03221829U CN 2622899 Y CN2622899 Y CN 2622899Y
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- China
- Prior art keywords
- surge
- lightning protection
- protection device
- zinc oxide
- utility
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Abstract
The utility model relates to a lightning protective device, particularly a surge recognizing lightning protector which is provided with at least one pair of lead wires and a ground wire. The front end of the zinc oxide lightning protector is connected in series with a surge recognizing switch device which is composed of a solid discharge tube connected in parallel with a main discharge circuit which is composed of a gas discharge tube, a surge suppressor and a resistor. The utility model can block up low-frequency over-voltage, and can also quickly respond to be closed and switched with the zinc oxide lightning protector when the high-frequency over-voltage arrives to protect the load. The utility model has the characteristics of small leakage current, avoidance of non-lightning strike damage element, fast response speed, low residual voltage and simple structure.
Description
Affiliated technical field
The utility model relates to a kind of lightning protection device, particularly a kind of lightning protection device with surge recognition function.
Background technology
At present, known zinc oxide lightning protection device exists two kinds of non-thunderbolts to damage defectives, and the one: owing to power-supply fluctuation causes lightning protection device to bear several seconds or the mistake piezoelectric voltages of a few minutes is burnt even on fire, the safe operation of distribution system is caused great destruction.Passive way is to improve the operation voltage of piezo-resistance, but residual voltage is increased simultaneously; The 2nd: the zinc oxide lightning protection device exists certain leakage current usually, when the overlong time that continues, promptly can generate heat, thereby cause zinc oxide lightning protection device leakage current further to increase, and finally causes to burn even on fire.
Summary of the invention
In order to solve present zinc oxide lightning protection device deficiency of burning on fire easily, the utility model provides a kind of lightning protection device with surge recognition function, this surge identification lightning protection device can not only be discerned the high frequency piezoelectric voltage of being struck by lightning, and leakage current is less, operation voltage is higher, response time is short, speed is fast, and residual voltage is low, and is simple in structure.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of surge identification lightning protection device, have at least one pair of lead-out wire and an earth connection, a surge identification switch device that is combined by fixedly discharge tube, gas discharge tube, surge suppressor, resistance is set in the series connection of the front end of zinc oxide lightning protection device.
Further scheme is: in the above-mentioned surge identification switch device, solid discharging tube is in parallel with the main discharge circuit that gas discharge tube, surge suppressor, resistance are formed.
Above-mentioned surge identification lightning protection device use in parallel with load.
The beneficial effects of the utility model are: the low frequency that power-supply fluctuation produces when static state is crossed piezoelectric voltage and can't be passed through surge identification switch device, have only high frequency (80/20 μ s) thunderbolt piezoelectric voltage just can pass through this device.Because the response speed of solid discharging tube and surge suppressor is greater than gas discharge tube, so can absorb the thunder and lightning wave head in advance, the gas discharge tube discharge is connected the thunder and lightning leakage path subsequently, to improve response speed.Because surge identification switch device is connected with the zinc oxide lightning protection device, its operation voltage is both sums, therefore, can select the zinc oxide component of operation voltage low (being that residual voltage is low).The utility model can effectively be blocked the power supply low frequency and cross piezoelectric voltage, crosses piezoelectric voltage by the high frequency lightning surge, and leakage current is less, thereby has avoided non-thunderbolt to damage factor, has characteristics such as response speed is fast, residual voltage is low; This device adopts conventional device to combine, and is simple in structure.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Framework schematic diagram when Fig. 1 is the utility model use.
Fig. 2 is the internal circuit schematic diagram of the surge identification switch device among Fig. 1.
Among Fig. 1,1. surge identification switch device, 2. zinc oxide lightning protection device, 3. load;
Among Fig. 2,4. solid discharging tube, 5. gas discharge tube, 6. surge suppressor, 7. resistance.
Embodiment
In Fig. 1, surge identification lightning protection device has a pair of lead-out wire and an earth connection, and surge identification switch device 1 connect with zinc oxide lightning protection device 2, the lightning protection device that composition has the surge recognition function, and in parallel with protected load 3, formation is to the protection of load 3.
In embodiment illustrated in fig. 2, the main discharge circuit that the circuit of surge identification switch device 1 is made up of solid discharging tube 4 and gas discharge tube 5, surge suppressor 6, resistance 7 composes in parallel.
When high frequency lightning surge electric current when lead arrives A point, electric current enters in the surge identification switch device 1, the surge suppressor 6 in this device at first responds, the absorption portion peak current, and pass through resistance 7 with the voltage clamp between 2 of A, the B in prescribed limit; Subsequently, solid discharging tube 4 response conductings are loaded into the input B point of zinc oxide lightning protection device 2 with surge voltage, make zinc oxide lightning protection device 2 respond conducting ahead of time; At last, gas discharge tube 5 response conductings form surge current main discharge paths with zinc oxide lightning protection device 2, make the surge current can not be by load 3, thereby reach the purpose of protecting load 3.
Claims (2)
1. a surge identification lightning protection device has at least one pair of lead-out wire and an earth connection, it is characterized in that: at the front end series connection surge identification switch device of zinc oxide lightning protection device.
2. surge identification lightning protection device according to claim 1, it is characterized in that: the main discharge circuit that surge identification switch device is made up of solid discharging tube and gas discharge tube, surge suppressor, resistance composes in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03221829 CN2622899Y (en) | 2003-05-12 | 2003-05-12 | Surge recognition lightning protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03221829 CN2622899Y (en) | 2003-05-12 | 2003-05-12 | Surge recognition lightning protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2622899Y true CN2622899Y (en) | 2004-06-30 |
Family
ID=34244879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03221829 Expired - Fee Related CN2622899Y (en) | 2003-05-12 | 2003-05-12 | Surge recognition lightning protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2622899Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101252279B (en) * | 2007-02-19 | 2012-11-28 | 株式会社山光社 | Surge protection device and surge protection apparatus using thereof |
| CN103155311A (en) * | 2010-10-04 | 2013-06-12 | 凤凰通讯两合有限公司 | Surge protection device |
-
2003
- 2003-05-12 CN CN 03221829 patent/CN2622899Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101252279B (en) * | 2007-02-19 | 2012-11-28 | 株式会社山光社 | Surge protection device and surge protection apparatus using thereof |
| CN103155311A (en) * | 2010-10-04 | 2013-06-12 | 凤凰通讯两合有限公司 | Surge protection device |
| CN103155311B (en) * | 2010-10-04 | 2016-07-13 | 凤凰通讯两合有限公司 | Surge protective device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |