CN202218011U - Surge protection device - Google Patents
Surge protection device Download PDFInfo
- Publication number
- CN202218011U CN202218011U CN2011201851582U CN201120185158U CN202218011U CN 202218011 U CN202218011 U CN 202218011U CN 2011201851582 U CN2011201851582 U CN 2011201851582U CN 201120185158 U CN201120185158 U CN 201120185158U CN 202218011 U CN202218011 U CN 202218011U
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- module
- surge protector
- piezo
- resistance
- gas discharge
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Abstract
The utility model provides a surge protection device which is applied in an alternating-current three-phase power supply system. The surge protection device comprises four voltage-sensitive resistance modules and a switching type module, wherein respective first ends of the four voltage-sensitive resistance modules are respectively connected with three live lines and a zero line in a one-to-one manner; respective second ends of the four voltage-sensitive resistance modules are respectively connected with a first end of the switching type module; and a second end of the switching type module is connected with a ground line. According to the surge protection device, the service life is long and the residual voltage is low.
Description
Technical field
The utility model relates to over-voltage protection technology, relates in particular to a kind of surge protector.
Background technology
Surge protector has multiple circuit structure form, to adapt to different service conditions.
For exchanging three-phase power supply system, its circuit structure form has three kinds at present:
The circuit structure of first kind of three-phase electricity surge protector is for having adopted a piezo-resistance module respectively between three live wires (being L1, L2 and L3 line) and zero line (N line) and ground wire (PE line); Abbreviate " 4+0 " mode surge protector as; Its structure can be mainly used in three-phase TN-S electric power system referring to Fig. 1.
The circuit structure of second kind of three-phase electricity surge protector is for adopting a piezo-resistance module respectively between three live wires and N line; Between N line and PE line, adopt a gas discharge tube module then again; Abbreviate " 3+1 " mode surge protector as; Its structure can be mainly used in three-phase TT electric power system and three-phase TN-S electric power system referring to Fig. 2.
The circuit structure of the third three-phase electricity surge protector is for adopting a surge protection module respectively between three live wires and PE line or protective earthing-neutral conductor; Abbreviate " 3+0 " mode surge protector as; Its structure can be mainly used in three-phase IT electric power system and three-phase TN-C electric power system referring to Fig. 3.
Because there is intrinsic aging effect in piezo-resistance, the surge protector of above-mentioned three kinds of structures can reduce leakage current through the rated voltage that improves the piezo-resistance module, thereby improves useful life, but residual voltage also can be higher simultaneously, to unfavorable by protection equipment; Want to make residual voltage to reduce, then need reduce the rated voltage of piezo-resistance module, and reduce the increase that this rated voltage certainly will cause piezo-resistance module leakage current, thereby reduce useful life.
The utility model content
The utility model provides a kind of surge protector, to overcome existing surge protector in long service life, the defective that residual voltage is high; Perhaps when guaranteeing that residual voltage is low, the defective that useful life is short.
The utility model provides a kind of surge protector, is applied to exchange three-phase power supply system, and this surge protector comprises four piezo-resistance modules and a switching mode module, wherein:
Said four piezo-resistance modules first end separately links to each other with a zero line with three live wires respectively one to one; Said four piezo-resistance modules second end separately links to each other with first end of said switching mode module, and second end of said switching mode module links to each other with ground wire.
Preferably, said switching mode module is gas discharge tube module, solid discharging tube module or spark gap module.
Preferably, said piezo-resistance module comprises one or more piezo-resistances.
Preferably, said gas discharge tube module comprises one or more gas discharge tubes.
Preferably, said solid discharging tube module comprises one or more solid discharging tubes.
Preferably, said spark gap module comprises one or more spark gaps.
Above-mentioned surge protector long service life and residual voltage are low.
Description of drawings
Fig. 1 exchanges three-phase " 4+0 " mode surge protector circuit diagram in the prior art;
Fig. 2 exchanges three-phase " 3+1 " mode surge protector circuit diagram in the prior art;
Fig. 3 exchanges three-phase " 3+0 " mode surge protector circuit diagram in the prior art;
Fig. 4 is the circuit diagram of interchange three-phase " 4+1 " the mode surge protector embodiment of the utility model.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer, hereinafter will combine accompanying drawing that the embodiment of the utility model is elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
The utility model provides a kind of surge protector, is applied to exchange three-phase power supply system, and this surge protector comprises four piezo-resistance modules and a switching mode module, wherein:
Said four piezo-resistance modules first end separately links to each other with a zero line with three live wires respectively one to one; Said four piezo-resistance modules second end separately links to each other with first end of said switching mode module, and second end of said switching mode module links to each other with ground wire.
Wherein, said switching mode module can be gas discharge tube module, solid discharging tube module or spark gap module.Said piezo-resistance module comprises one or more piezo-resistances.Said gas discharge tube module comprises one or more gas discharge tubes.Said solid discharging tube module comprises one or more solid discharging tubes.Said spark gap module comprises one or more spark gaps.This surge protector abbreviates " 4+1 " mode surge protector as.
Above-mentioned surge protector goes for various interchange three-phase power supply systems; In the electric power system normal work period; The gas discharge tube module, solid discharging tube module or the spark gap module that directly connect over the ground are not easy to puncture; So almost there is not leakage current over the ground; Have only when the surge voltage that occurs in the system over the ground; Gas discharge tube module, solid discharging tube module or spark gap module are just understood the moment puncture and are short-circuit condition, cooperate with gas discharge tube module (perhaps solid discharging tube module, spark gap module) through the piezo-resistance module of selecting different parameters, can make surge protector obtain longer useful life and lower residual voltage.
As shown in Figure 4; Be the circuit diagram of interchange three-phase " 4+1 " the mode surge protector embodiment of the utility model, in this embodiment, an end of four piezo-resistance modules is received respectively on three live wires and the N line; Receive on the PE line through a gas discharge tube module after the other end parallel connection; All formed the combined loop that a piezo-resistance and gas discharge tube are connected between such three live wires and N line and the PE line, gas discharge tube plays an on-off action in this combined loop, when the surge voltage that do not have in the circuit to occur to the PE line; It can be kept apart piezo-resistance and PE line; Make in the piezo-resistance almost not to the leakage current of PE line, so just can prolong the useful life of piezo-resistance widely, also therefore can select the lower piezo-resistance module of rated voltage simultaneously; And the increase of the leakage current that can cause the piezo-resistance module thus of needn't worrying and influence the life-span; And when the surge voltage to the PE line in circuit, occurring, gas discharge tube can puncture rapidly be short-circuit condition, little to the clamp voltage influence of whole combined loop; Piezo-resistance module and gas discharge tube module through selecting proper parameter cooperate, and just can obtain to make a farfetched comparison longer useful life of the surge protector shown in Fig. 1, accompanying drawing 2 and the accompanying drawing 3 and lower residual voltage.
Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model, only with reference to preferred embodiment the utility model is specified.Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model, and do not break away from the spirit and the scope of the utility model technical scheme, all should be encompassed in the middle of the claim scope of the utility model.
Claims (6)
1. a surge protector is applied to exchange three-phase power supply system, it is characterized in that:
This surge protector comprises four piezo-resistance modules and a switching mode module, wherein:
Said four piezo-resistance modules first end separately links to each other with a zero line with three live wires respectively one to one; Said four piezo-resistance modules second end separately links to each other with first end of said switching mode module, and second end of said switching mode module links to each other with ground wire.
2. surge protector according to claim 1 is characterized in that:
Said switching mode module is gas discharge tube module, solid discharging tube module or spark gap module.
3. surge protector according to claim 1 and 2 is characterized in that:
Said piezo-resistance module comprises one or more piezo-resistances.
4. surge protector according to claim 2 is characterized in that:
Said gas discharge tube module comprises one or more gas discharge tubes.
5. surge protector according to claim 2 is characterized in that:
Said solid discharging tube module comprises one or more solid discharging tubes.
6. surge protector according to claim 2 is characterized in that:
Said spark gap module comprises one or more spark gaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201851582U CN202218011U (en) | 2011-06-02 | 2011-06-02 | Surge protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201851582U CN202218011U (en) | 2011-06-02 | 2011-06-02 | Surge protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202218011U true CN202218011U (en) | 2012-05-09 |
Family
ID=46017239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201851582U Expired - Lifetime CN202218011U (en) | 2011-06-02 | 2011-06-02 | Surge protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202218011U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767194A (en) * | 2015-04-16 | 2015-07-08 | 河南行知专利服务有限公司 | High-voltage transmission convertor station overvoltage protection device |
| CN104779601A (en) * | 2015-05-06 | 2015-07-15 | 杜尧生 | Overvoltage protection device and method |
| CN108767829A (en) * | 2018-08-09 | 2018-11-06 | 茂硕科技有限公司 | A kind of surging protection circuit |
| CN113141002A (en) * | 2020-01-20 | 2021-07-20 | 青岛海尔空调电子有限公司 | Surge absorption circuit for three-phase air conditioning system |
-
2011
- 2011-06-02 CN CN2011201851582U patent/CN202218011U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767194A (en) * | 2015-04-16 | 2015-07-08 | 河南行知专利服务有限公司 | High-voltage transmission convertor station overvoltage protection device |
| CN104779601A (en) * | 2015-05-06 | 2015-07-15 | 杜尧生 | Overvoltage protection device and method |
| CN108767829A (en) * | 2018-08-09 | 2018-11-06 | 茂硕科技有限公司 | A kind of surging protection circuit |
| CN113141002A (en) * | 2020-01-20 | 2021-07-20 | 青岛海尔空调电子有限公司 | Surge absorption circuit for three-phase air conditioning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |