CN203800585U - Surge protective device - Google Patents
Surge protective device Download PDFInfo
- Publication number
- CN203800585U CN203800585U CN201420152736.6U CN201420152736U CN203800585U CN 203800585 U CN203800585 U CN 203800585U CN 201420152736 U CN201420152736 U CN 201420152736U CN 203800585 U CN203800585 U CN 203800585U
- Authority
- CN
- China
- Prior art keywords
- resistance
- resistor
- shell fragment
- elastic sheet
- rectifier bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
A surge protective device includes a main protective circuit and an alarm circuit; the main protective circuit comprises an elastic sheet and a voltage dependent resistor, wherein the elastic sheet and the voltage dependent resistor are connected in series with a power source; the alarm circuit comprises a first resistor, a second resistor, a rectifier bridge, a filtering capacitor, an optocoupler and an indicating lamp; the first resistor is connected in series with the rectifier bridge and is connected in parallel with the voltage dependent resistor; the filtering capacitor is connected in series with the rectifier bridge; and the second resistor, the indicating lights and the optocoupler are connected in parallel with the filtering capacitor. When lightning surge invades and achieves the surge protective device, the voltage dependent resistor and the elastic sheet act, and the voltage dependent resistor limits voltage, so that the rise of lightning surge voltage can be limited; when the voltage dependent resistor is subjected to excessively strong lightning, and is damaged and emits heat, the elastic sheet can be separated from the a circuit fast through a low-temperature welding structure of the elastic sheet, and therefore, overheating of the surge protective device can be avoided; after voltage reduction of the first resistor, rectification of the rectifier bridge and filtering of the filtering capacitor, the indicating lamp displays alarm signals, and at the same time, the optocoupler is switched on and outputs signals normally; after the elastic sheet acts and is disconnected, the indicating lamp is turned off, and the output of the optocoupler is interrupted, and the working state of the surge protective device can be indicated.
Description
Technical field
The utility model belongs to distribution system protector technical field, particularly relates to a kind of Surge Protector.
Background technology
Power source surge protector is extensively incorporated in modern power distribution systems, and the surge of indirect thunder and lightning and direct effects of lightning or other instantaneous overvoltages is protected, and avoids the impact of the surges such as thunder and lightning for the protection of equipment.
The principle of Surge Protector is to allow thunder and lightning interference etc. by the protector ground of releasing, thus protection rear class equipment; Now, conventional a kind of technical scheme is to connect piezo-resistance by common shell fragment, utilizes the damage heat generation characteristic of piezo-resistance, and while reaching uniform temperature, shell fragment flicks, thereby makes piezo-resistance depart from circuit; Another kind of scheme is and piezo-resistance series connection Thermal Cutoffs that while reaching temperature, fuse disconnects, and makes piezo-resistance depart from circuit.
But the common shell fragment of connecting, due to long-time crooked or at high temperature, can not guarantee that the elasticity of shell fragment is reliably good, may bullet during module failure do not open or elastic force causes arcing on fire not; The Thermal Cutoffs of series connection can not well bear heavy current impact, may cause damaging on fire; All can not guarantee the reliable breaking circuit of shell fragment, likely can cause security incident because bearing compared with large lightning impulse.
Summary of the invention
Based on this, the utility model is to overcome the defect that prior art can not guarantee the reliable breaking circuit of shell fragment, cause security incident, and a kind of Surge Protector is provided.
Its technical scheme is as follows:
A Surge Protector, comprises protection main circuit and warning circuit; Described protection main circuit comprises shell fragment and piezo-resistance, and described shell fragment, piezo-resistance are connected with power supply; Described warning circuit comprises the first resistance, the second resistance, rectifier bridge, filter capacitor, optocoupler and indicator light, described the first resistance is connected with rectifier bridge and is in parallel with described piezo-resistance, described filter capacitor is connected with described rectifier bridge, and described the second resistance, indicator light and optocoupler are in parallel with described filter capacitor.
Below further technical scheme is described:
Described shell fragment is height restorability metal composite shell fragment.
Described metal composite shell fragment is manganese steel and phosphor-copper composite elastic sheet.
Also comprise and support copper part, described piezo-resistance is installed on described support copper part.
Also comprise circuit board, the element of described warning circuit is installed on described circuit board.
Below the principle of aforementioned techniques scheme, effect etc. are described:
1. when lightning surge ripple is invaded along feed cable, arrive Surge Protector, first arrive main line, make piezo-resistance and shell fragment action, piezo-resistance produces pressure limiting effect, and restriction lightning impulse voltage rises, protection rear class equipment; When piezo-resistance suffers excessive thunderbolt and impaired adstante febre, by the soldered structure of shell fragment, breaking circuit, guarantees that Surge Protector is not overheated fast; And warning circuit access protection main circuit rear class, after the first resistance step-down, rectifier bridge rectification and filter capacitor filtering, by indicator light display alarm, is connected the output of optocoupler normal signal simultaneously; When shell fragment action disconnects rear indicator light, extinguish, optocoupler output disconnects, so that indication Surge Protector operating state; The reliability of shell fragment breaking circuit is high, can not cause security incident.
2. height restorability metal composite shell fragment can guarantee to keep good elasticity under long-time bending and high temperature, when shell fragment reaches design temperature, can guarantee reliable breaking circuit.
3. the shell fragment that manganese steel and phosphor-copper are composited, has height restorability, when piezo-resistance suffers to make compared with large thunderbolt the long-time bending of shell fragment, high temperature or bears compared with heavy current impact, can guarantee shell fragment quick breaking circuit when reaching design temperature.
4. piezo-resistance is installed on and supports copper part, supports copper part piezo-resistance is played a supportive role.
5. each element of warning circuit is installed on circuit board, and circuit board is the supporter of electronic devices and components, is the carrier of electronic devices and components electrical connection, plays the effect of support and connecting electronic components and parts.
Accompanying drawing explanation
Fig. 1 is the utility model Surge Protector circuit diagram.
Embodiment
Below embodiment of the present utility model is elaborated:
As shown in Figure 1, a kind of Surge Protector 100, comprises protection main circuit 110 and warning circuit 120; Protection main circuit 110 comprises shell fragment 112 and piezo-resistance 114, and shell fragment 112, piezo-resistance 114 are connected with power supply; Warning circuit 120 comprises the first resistance 122, the second resistance 124, rectifier bridge 125, filter capacitor 126, optocoupler 127 and indicator light 128, the first resistance 122 is connected with rectifier bridge 125 and is in parallel with piezo-resistance 114, filter capacitor 126 is connected with rectifier bridge 125, and the second resistance 124, indicator light 128 and optocoupler 127 are in parallel with filter capacitor 126.
Above-mentioned Surge Protector 100, when lightning surge ripple is invaded along feed cable, arrives Surge Protector 100, first arrive main line, make piezo-resistance 114 and shell fragment 112 actions, piezo-resistance 114 produces pressure limiting effect, restriction lightning impulse voltage rises, protection rear class equipment; When piezo-resistance 114 suffers excessive thunderbolt and impaired adstante febre, by the soldered structure of shell fragment 112, breaking circuit, guarantees that Surge Protector 100 is not overheated fast; And warning circuit 120 access protection main circuit 110 rear classes, after the first resistance 122 step-downs, rectifier bridge 125 rectifications and filter capacitor 126 filtering, by indicator light 128 display alarms, are connected optocoupler 127 normal signal outputs simultaneously; When shell fragment 112 actions disconnect rear indicator light 128, extinguish, optocoupler 127 outputs disconnect, so that indication Surge Protector 100 operating states; The reliability of shell fragment 112 breaking circuits is high, can not cause security incident.
Shell fragment 112 is height restorability metal composite shell fragment 112.Height restorability metal composite shell fragment 112 can guarantee to keep good elasticity under long-time bending and high temperature, when shell fragment 112 reaches design temperature, can guarantee reliable breaking circuit.
Metal composite shell fragment 112 is manganese steel and phosphor-copper composite elastic sheet 112.The shell fragment 112 that manganese steel and phosphor-copper are composited, there is height restorability, when piezo-resistance 114 suffers to make compared with large thunderbolt the long-time bending of shell fragment 112, high temperature or bears compared with heavy current impact, can guarantee shell fragment 112 quick breaking circuit when reaching design temperature.
Also comprise and support copper part, piezo-resistance 114 is installed on and supports copper part.Piezo-resistance 114 is installed on and supports copper part, supports copper part piezo-resistance 114 is played a supportive role.
Also comprise circuit board, the element of warning circuit 120 is installed on circuit board.Each element of warning circuit 120 is installed on circuit board, and circuit board is the supporter of electronic devices and components, is the carrier of electronic devices and components electrical connection, plays the effect of support and connecting electronic components and parts.
The above embodiment has only expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (5)
1. a Surge Protector, is characterized in that, comprises protection main circuit and warning circuit; Described protection main circuit comprises shell fragment and piezo-resistance, and described shell fragment, piezo-resistance are connected with power supply; Described warning circuit comprises the first resistance, the second resistance, rectifier bridge, filter capacitor, optocoupler and indicator light, described the first resistance is connected with rectifier bridge and is in parallel with described piezo-resistance, described filter capacitor is connected with described rectifier bridge, and described the second resistance, indicator light and optocoupler are in parallel with described filter capacitor.
2. Surge Protector according to claim 1, is characterized in that, described shell fragment is height restorability metal composite shell fragment.
3. Surge Protector according to claim 2, is characterized in that, described metal composite shell fragment is manganese steel and phosphor-copper composite elastic sheet.
4. Surge Protector according to claim 1, is characterized in that, also comprises and supports copper part, and described piezo-resistance is installed on described support copper part.
5. Surge Protector according to claim 1, is characterized in that, also comprises circuit board, and the element of described warning circuit is installed on described circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420152736.6U CN203800585U (en) | 2014-03-28 | 2014-03-28 | Surge protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420152736.6U CN203800585U (en) | 2014-03-28 | 2014-03-28 | Surge protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203800585U true CN203800585U (en) | 2014-08-27 |
Family
ID=51382774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420152736.6U Expired - Fee Related CN203800585U (en) | 2014-03-28 | 2014-03-28 | Surge protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203800585U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995141A (en) * | 2019-04-13 | 2019-07-09 | 北京京投亿雅捷交通科技有限公司 | A kind of power control unit that achievable emergency power off is self-locking and control method |
-
2014
- 2014-03-28 CN CN201420152736.6U patent/CN203800585U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995141A (en) * | 2019-04-13 | 2019-07-09 | 北京京投亿雅捷交通科技有限公司 | A kind of power control unit that achievable emergency power off is self-locking and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202159961U (en) | Ground wire safe voltage control system | |
| CN203850830U (en) | Intelligent anti-thunder case | |
| CN104218561A (en) | Multistage lightning protection circuit with delay circuit | |
| CN203800585U (en) | Surge protective device | |
| CN102570388A (en) | Controllable device of surge protector | |
| CN203617704U (en) | Equipotential cutoff anti-thunder multifunctional power-source-protecting circuit | |
| CN203553918U (en) | Video-monitoring circuit three-in-one surge protector | |
| CN204517394U (en) | There is the lightning protection device of self-checking function | |
| CN106099840A (en) | Protection circuit of power supply circuit and power supply circuit | |
| CN204706883U (en) | A kind of Novel lightning-proof case | |
| CN204144932U (en) | A kind of novel surge protection device | |
| CN203193272U (en) | Convenient-to-dismount dual-protection surge protection device | |
| CN208190251U (en) | A kind of power supply circuit and electronic equipment | |
| CN202332751U (en) | Intelligent surge protector with novel tripping indication device | |
| CN205790759U (en) | A kind of power lightning protection socket | |
| CN201937242U (en) | Monitoring device of surge protector | |
| CN204391730U (en) | A kind of Novel electric surge protector | |
| CN204391719U (en) | A kind of Novel electric surge protector | |
| CN203103945U (en) | Surge protector | |
| CN105305394A (en) | Novel surge protection device | |
| CN203193271U (en) | Dual-protection surge protector | |
| CN201985511U (en) | Controllable device of surge protector | |
| CN105322523A (en) | Novel surge protection device | |
| CN203707762U (en) | Novel surge protection device | |
| CN204391722U (en) | A kind of Novel electric surge protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20150328 |
|
| EXPY | Termination of patent right or utility model |