CN204696677U - Exempt from ground connection surge protector - Google Patents
Exempt from ground connection surge protector Download PDFInfo
- Publication number
- CN204696677U CN204696677U CN201520413398.1U CN201520413398U CN204696677U CN 204696677 U CN204696677 U CN 204696677U CN 201520413398 U CN201520413398 U CN 201520413398U CN 204696677 U CN204696677 U CN 204696677U
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- fuse
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Abstract
The utility model discloses one and exempt from ground connection surge protector, comprise the first piezo-resistance be connected in parallel between live wire and zero line, and the first fuse is serially connected between live wire and the first piezo-resistance; Be connected in parallel on the second piezo-resistance between live wire and ground wire, and the second fuse is serially connected between live wire and the second piezo-resistance; Be connected in parallel on the 3rd piezo-resistance between zero line and ground wire, and the 3rd fuse is serially connected between zero line and the 3rd piezo-resistance; First gas discharge tube picks out between the second piezo-resistance and the 3rd piezo-resistance, is connected with ground wire; First current-limiting resistance of serial connection and indicator light; one end picks out between the 3rd piezo-resistance and the 3rd fuse; the other end is connected between the first piezo-resistance and the first fuse and between the second piezo-resistance and the second fuse, and ground wire is connected with the conductive shell of protected equipment.The utility model can effectively protection power source with data-signal and equipment thereof, structure is simple, without ground connection, easy for installation.
Description
Technical field
The utility model relates to anti-electric shock protection facility technology field, particularly relates to one and exempts from ground connection surge protector.
Background technology
Lightning Disaster is one of the most serious natural calamity, and the casualties that the whole world causes because of Lightning Disaster every year, property loss are countless.Along with the extensive application of electronics, the integrated equipment of microelectronics, the damage of the system that lightning overvoltage and LEMP cause and equipment gets more and more.Therefore, solution building and electronic information the Lightning Protection problem seem very important as early as possible.
Along with the increasingly stringent that relevant device requires lightning protection; surge on surge protector (Surge ProtectionDevice, SPD) limiting circuitry and one of instantaneous overvoltage, the overcurrent important step becoming Modern Lightning Protection Technology of releasing on circuit are installed.
Surge protector, is also lightning protection device, and being a kind ofly provides the electronic installation of security protection for various electronic equipment, instrument and meter, communication line.When producing suddenly peak current or voltage because of extraneous interference in electric loop or communication line, Surge Protector can be shunted within the extremely short time in conducting, thus avoids surge to the infringement of other equipment in loop.Surge protector is applicable to exchange 50/60HZ; rated voltage is in the electric power system (or communication system) of 380V; the surge of indirect thunder and lightning and direct effects of lightning or other instantaneous overvoltages is protected; be applicable to the requirement of home dwelling, the tertiary industry and industrial circle surge protection; there is relative phase; relatively, phase center line, center line over the ground and the protected mode such as combination.
Surge protectors all on the market all needs ground connection now, does not have ground connection surge protector to become ornaments, and grown-ups and children district, fringe area was not substantially all considered at that time and was laid earth connection.When surge protector is installed, just needs to do independent grounding, so can increase the costs such as human and material resources, also have some places to do independent grounding.
Utility model content
The purpose of this utility model is to overcome above shortcomings in prior art, provides a kind of structure simple, easy for installation, superior performance exempt from ground connection surge protector.
For realizing above object, the technical solution of the utility model is that one exempts from ground connection surge protector, comprising: be connected in parallel on the first piezo-resistance between live wire and zero line, and the first fuse is serially connected between live wire and the first piezo-resistance; Be connected in parallel on the second piezo-resistance between live wire and ground wire, and the second fuse is serially connected between live wire and the second piezo-resistance; Be connected in parallel on the 3rd piezo-resistance between zero line and ground wire, and the 3rd fuse is serially connected between zero line and the 3rd piezo-resistance; First gas discharge tube picks out between the second piezo-resistance and the 3rd piezo-resistance, is connected with ground wire; First current-limiting resistance of serial connection and indicator light; one end picks out between the 3rd piezo-resistance and the 3rd fuse; the other end is connected between the first piezo-resistance and the first fuse and between the second piezo-resistance and the second fuse, and described ground wire is connected with the conductive shell of protected equipment.
As optional, exempt from inverter assembly described in ground connection surge protector and also comprise signal surge protecting circuit, described signal surge protecting circuit comprises and to be connected between the first holding wire and secondary signal line and the second gas discharge tube of earth connection; Be serially connected with the second current-limiting resistance on the first holding wire and secondary signal line, the 3rd current-limiting resistance respectively; Be connected to the first diode between the first holding wire and secondary signal line; Be connected to the second diode, the 3rd diode of the negative pole serial connection between the first holding wire and secondary signal line, and the second diode cathode is connected ground wire with the 3rd diode cathode.
Further, exempt from the first diode described in ground connection surge protector described in, the second diode, the 3rd diode be Transient Suppression Diode.
As optional, first gas discharge tube of exempting from described in ground connection surge protector is a kind of ceramic gas discharge tube.
As optional, first current-limiting resistance of exempting from described in ground connection surge protector is a kind of metal oxidation resistance.
The utility model has following beneficial effect: utilize the anti-lightening protector that circuit theory of the present utility model is formed, can effectively protection power source with data-signal and equipment thereof, structure is simple, without ground connection, easy for installation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of power supply electric surge protective circuit;
Fig. 2 is the schematic diagram of signal surge protecting circuit;
Fig. 3 is the topological diagram of exempting from ground connection surge protector;
1, the first piezo-resistance; 11, the first fuse; 2, the second piezo-resistance; 22, the second fuse; 3, the 3rd piezo-resistance; 33, the 3rd fuse; 4, the first gas discharge tube; 5, the first current-limiting resistance; 6, indicator light; 7, the second gas discharge tube; 8, the second current-limiting resistance; 9, the 3rd current-limiting resistance; 10, the first diode; 11, the second diode; 12, the 3rd diode.
Embodiment
Below in conjunction with specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is further described:
As shown in Figure 3, exempt from ground connection surge protector and comprise power supply electric surge protective circuit and signal surge protecting circuit.Needed for do lightning protection facility be electric energy meter and data transmitting, ground connection surge protector will be exempted from and be connected with receipts proterctive equipment.Wherein, power supply electric surge protective circuit is connected in electric energy meter input, and signal surge protecting circuit is connected to the holding wire of data transmitting.
As shown in Figure 1, described power supply electric surge protective circuit comprises: be connected in parallel on the first piezo-resistance 1 between live wire (L) and zero line (N), and the first fuse 11 is serially connected between live wire (L) and the first piezo-resistance 1; Be connected in parallel on the second piezo-resistance 2 between live wire (L) and ground wire (N), and the second fuse 22 is serially connected between live wire (L) and the second piezo-resistance 2; Be connected in parallel on the 3rd piezo-resistance 3 between zero line (N) and ground wire (PE), and the 3rd fuse 33 is serially connected between zero line (N) and the 3rd piezo-resistance 3; Ceramic gas discharge tube 4 picks out between the second piezo-resistance 2 and the 3rd piezo-resistance 3, is connected with ground wire (PE); The metal oxidation resistance 5 of serial connection and indicator light 6, one end picks out between the 3rd piezo-resistance 3 and the 3rd fuse 33, and the other end is connected between the first piezo-resistance 1 first fuse 11 and between the second piezo-resistance 2 and the second fuse 22.Described ground wire (PE) is connected with ammeter box metal shell.
As shown in Figure 2, described signal surge protecting circuit comprises: to be connected between the first holding wire and secondary signal line and the ceramic gas discharge tube 7 of earth connection; Be serially connected with the metal oxidation resistance 8 on the first holding wire and secondary signal line, metal oxidation resistance 9 respectively; Be connected to the Transient Suppression Diode 10 between the first holding wire and secondary signal line; Be connected to Transient Suppression Diode 11, the Transient Suppression Diode 12 of the negative pole serial connection between the first holding wire and secondary signal line, and Transient Suppression Diode 11 negative pole and Transient Suppression Diode 12 minus earth line (PE).Described ground wire (PE) is connected with the metal shell of data transmitting.
High, the high-power metal oxidation resistance of preferred precision, its resistance according to composition different protector product value between 1 Ω-5 Ω, its major function be when have thunderbolt big current by time current limliting with carry out energy match.Preferred power is large, and junction capacitance is little, the transient suppression diode that clamped voltage is low, is mainly used in carrying out quick overvoltage protection to circuit element, and it can the surging signal of " absorption " power up to thousands of watts.
The power frequency continued flow (for discharging gap type device) that the arranging of fuse mainly prevents from producing because of thunderbolt, to the damage of surge protector and circuit thereof, maintains easily replacing; On the other hand, prevent from causing line fault because of surge protector aging (leakage current as mov device increases).
Above-mentioned embodiment is used for explaining and the utility model is described; instead of the utility model is limited; in the protection range of spirit of the present utility model and claim, any amendment make the utility model and change, all fall into protection range of the present utility model.
Claims (5)
1. exempt from a ground connection surge protector, comprising: be connected in parallel on the first piezo-resistance (1) between live wire and zero line, and the first fuse (11) is serially connected between live wire and the first piezo-resistance (1); Be connected in parallel on the second piezo-resistance (2) between live wire and ground wire, and the second fuse (22) is serially connected between live wire and the second piezo-resistance (2); Be connected in parallel on the 3rd piezo-resistance (3) between zero line and ground wire, and the 3rd fuse (33) is serially connected between zero line and the 3rd piezo-resistance (3); First gas discharge tube (4) picks out between the second piezo-resistance (2) and the 3rd piezo-resistance (3), is connected with ground wire; First current-limiting resistance (5) of serial connection and indicator light (6); one end picks out between the 3rd piezo-resistance (3) and the 3rd fuse (33); the other end is connected between the first piezo-resistance (1) and the first fuse (11) and between the second piezo-resistance (2) and the second fuse (22), and described ground wire is connected with the conductive shell of protected equipment.
2. according to claim 1ly exempt from ground connection surge protector, it is characterized in that: also comprise signal surge protecting circuit, described signal surge protecting circuit comprises and to be connected between the first holding wire and secondary signal line and second gas discharge tube (7) of earth connection; Be serially connected with the second current-limiting resistance (8) on the first holding wire and secondary signal line, the 3rd current-limiting resistance (9) respectively; Be connected to the first diode (10) between the first holding wire and secondary signal line; Be connected to the second diode (11), the 3rd diode (12) of the negative pole serial connection between the first holding wire and secondary signal line, and the second diode (11) negative pole is connected ground wire with the 3rd diode (12) negative pole.
3. according to claim 2ly exempt from ground connection surge protector, it is characterized in that: described the first diode (10), the second diode (11), the 3rd diode (12) are Transient Suppression Diode.
4. according to claim 1ly exempt from ground connection surge protector, it is characterized in that: described the first gas discharge tube (4) is a kind of ceramic gas discharge tube.
5. according to claim 1ly exempt from ground connection surge protector, it is characterized in that: described the first current-limiting resistance (5) is a kind of metal oxidation resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520413398.1U CN204696677U (en) | 2015-06-16 | 2015-06-16 | Exempt from ground connection surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520413398.1U CN204696677U (en) | 2015-06-16 | 2015-06-16 | Exempt from ground connection surge protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204696677U true CN204696677U (en) | 2015-10-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520413398.1U Expired - Fee Related CN204696677U (en) | 2015-06-16 | 2015-06-16 | Exempt from ground connection surge protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204696677U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958458A (en) * | 2016-06-07 | 2016-09-21 | 杭州世永电力科技有限公司 | Three-phase power signal sharing surge protector |
| CN106771825A (en) * | 2017-02-17 | 2017-05-31 | 广东立信防雷科技有限公司 | The on off test device and its method of testing of a kind of TN system earths line |
| CN109672158A (en) * | 2018-12-29 | 2019-04-23 | 国网山东省电力公司桓台县供电公司 | The miniature lightning protection device of electric energy meter |
| CN109888760B (en) * | 2019-03-12 | 2023-10-20 | 北京山图有源防雷科技有限公司 | Safety protection device for electrical equipment |
-
2015
- 2015-06-16 CN CN201520413398.1U patent/CN204696677U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105958458A (en) * | 2016-06-07 | 2016-09-21 | 杭州世永电力科技有限公司 | Three-phase power signal sharing surge protector |
| CN106771825A (en) * | 2017-02-17 | 2017-05-31 | 广东立信防雷科技有限公司 | The on off test device and its method of testing of a kind of TN system earths line |
| CN109672158A (en) * | 2018-12-29 | 2019-04-23 | 国网山东省电力公司桓台县供电公司 | The miniature lightning protection device of electric energy meter |
| CN109888760B (en) * | 2019-03-12 | 2023-10-20 | 北京山图有源防雷科技有限公司 | Safety protection device for electrical equipment |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20170616 |