CN2571049Y - Filtration type power supply lightning protector - Google Patents
Filtration type power supply lightning protector Download PDFInfo
- Publication number
- CN2571049Y CN2571049Y CN 02272864 CN02272864U CN2571049Y CN 2571049 Y CN2571049 Y CN 2571049Y CN 02272864 CN02272864 CN 02272864 CN 02272864 U CN02272864 U CN 02272864U CN 2571049 Y CN2571049 Y CN 2571049Y
- Authority
- CN
- China
- Prior art keywords
- common mode
- capacitor
- low
- pass filter
- filter circuit
- 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
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Abstract
The utility model relates to a filtering type power supply anti-lightning protector. A common mode inhibition low-pass filtering circuit is connected in series with a different mode inhibition low-pass filtering circuit; capacitors C1, C2 and C3 of the common mode inhibition low-pass filtering circuit are respectively connected with a phase wire output end and a zero wire output end of a common mode inhibition coil B; the zero wire output end is connected with an earth wire by a capacitor C4; inductors L1, L2, L3 and L4 of the different mode inhibition low-pass filtering circuiting are respectively connected in series with resistors R1, R2, R3 and R4; the resistors R1, R2 and R3 are respectively connected with the resistor R4 by capacitors C5, C6, and C7; the resistor R4 is connected with the earth wire by a capacitor C8. The utility model which can effectively filter and eliminate the high frequency pulse high voltage inducted by lightning has the advantages of reasonable design, ideal effect, simple structure, strong applicability and wide application range.
Description
Technical field
The utility model relates to a kind of anti-lightening protector, particularly a kind of filtering type power lightning protection protector of application of low-pass principle.
Background technology
Power circuit is the thing that happens occasionally by thunderbolt; the frequency spectrum of the main energy of thunder and lightning at tens kilo hertzs between several megahertzes; be higher than mains frequency far away; supply line is subjected to complicated lightning induction to produce complicated common mode and differential mode high-frequency impulse high pressure; destroy the normal conveying of power supply and the safety of electrical appliance; in order to prevent that effectively thunderbolt from causing damage; people have designed varied anti-lightening protector; but reach the lightning protection purpose; performance to anti-lightening protector is very high, and existing anti-lightening protector is poor because of its stability, and is poor to the thunder and lightning attenuating; complex structure, cost height etc. are former thereby influence it and apply face.Provide a kind of " lightning protection earth leakage protective device " as patent 99230513.6, be made up of lightning protection circuit, electromagnetic switch, electric leakage sample circuit, control gate circuit, overvoltage sample circuit, though lightning protection effect is pretty good, structure is too complicated; Patent 96210636.4 provides " a kind of lightning protection overpressure protector ", is made up of power lightning protection superpressure and antenna lightning protection overpressure protection circuit; Patent 97234760.7 provides a kind of " leakage conductor "; Also have patent and the application of considerable part, have their own characteristics each on the structure, but all limit because of it is subjected to range of application about anti-lightening protector, or not ideal enough in some aspects and fail to promote.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art and a kind of improved filtering type power lightning protection protector is provided, and simplified structure improves performance, improves the protection effect, guarantees the normal conveying of power supply and the safety of electrical appliance.
The purpose of this utility model can realize by following technical measures: this protector is provided with the common mode inhibition low-pass filter circuit and differential mode suppresses low-pass filter circuit, the common mode inhibition low-pass filter circuit suppresses low-pass filter circuit with differential mode and connects, the common mode inhibition low-pass filter circuit is provided with common mode choke coil and capacitor, the phase line output terminal of common mode choke coil is through the zero line output of capacitor connection common mode choke coil, and the zero line output of common mode choke coil connects ground wire through capacitor; Differential mode suppresses low-pass filter circuit and is provided with inductance, resistance and capacitor; the inductance series resistance connects the common mode choke coil output; the series inductance resistance output of phase line connects the series inductance resistance output of zero line through capacitor; the series inductance resistance output of zero line connects ground wire through capacitor; capacitor can a resistance in parallel; as the usefulness of capacitor discharge, series inductance resistance output is exactly the output of this protector.During practical application, no matter be three-phase or single phase power supply mode, power line connects the common mode choke coil input of common mode inhibition low-pass filter circuit respectively, the common mode inhibition low-pass filter circuit suppresses low-pass filter circuit with differential mode and connects, suppress in the low-pass filter circuit at differential mode, the size of the resistance of connecting with inductance uses power to decide by reality, also can be equivalent internal resistance, when feeding alternating current, the magnetic flux vector that the common mode inhibition low-pass filter circuit is produced and be zero, AC impedance is zero, and the impedance that differential mode suppresses low-pass filter circuit also is approximately zero, and power supply is without hindrance to be passed through; When being struck by lightning, supply line is subjected to complicated lightning induction to produce complicated common mode and differential mode high-frequency impulse high pressure, each line produces size is close, direction is identical common mode induction lightening deal magnetic flux that each winding produces in common mode choke coil with superimposed and present induction reactance, this inductance is formed low pass filter with the capacitor that is connect thereafter respectively, and the common mode induction lightening is by filtering; Differential mode induction lightening deal is subjected to certain decay by the common mode inhibition low-pass filter circuit, suppresses low-pass filter circuit by filtering once more at differential mode.
The utility model is reasonable in design; the application of low-pass principle; the high-frequency impulse high pressure filtering effectively of lightning induction will be met with in the supply line; thereby guarantee the normal conveying of power supply and the safety of electrical appliance; it is simple in structure, and is satisfactory for result, and adaptability is strong; wide application is the desirable patron saint of supply line and electrical appliance.
Description of drawings
Fig. 1 is a structure chart of the present utility model.
Embodiment
With reference to Fig. 1; this protector is the power lightning protection protector of three phase supply mode; Ain, Bin, Cin are three-phase input end; Oin is the zero line input, and Nin is the ground wire input, and Aout, Bout, Cout are three-phase output end; Oout is the zero line output; Nout is the ground line output terminal, suppresses low-pass filter circuit by common mode inhibition low-pass filter circuit and differential mode and forms, and the common mode inhibition low-pass filter circuit is by common mode choke coil B and capacitor C
1, C
2, C
3, C
4Form, common mode choke coil has four groups of coils, and its input connects three phase lines and the zero line of power supply respectively, and its phase line output terminal connects capacitor C respectively
1, C
2, C
3, capacitor C
1, C
2, C
3Its zero line output of another termination, capacitor C
1, C
2, C
3The zero line output that connects is through capacitor C
4Connect ground wire, differential mode suppresses the inductance L of low-pass filter circuit
1, L
2, L
3, L
4Respectively with resistance R
1, R
2, R
3, R
4Connect, and connect the phase line and the zero line of common mode choke coil output, capacitor C respectively
5, C
6, C
7One end connects the resistance R of phase line respectively
1, R
2, R
3Output, other end connecting to neutral line resistance R
4Output, capacitor C
5, C
6, C
7Respectively and be connected with resistance R
5, R
6, R
7, the zero line resistance R
4Output is through capacitor C
8Connect ground wire, capacitor C
8A resistance R in parallel
8If be applied on the single phase power supply mode, common mode choke coil only needs two groups of windings, and the circuit that common mode inhibition low-pass filter circuit, differential mode suppress low-pass filtering is identical with said structure, has just lacked the circuit of two phase lines, and structure is more simple.
Claims (1)
1. a filtering type power lightning protection protector has capacitor C
1, C
2, C
3, C
4, C
5, C
6, C
7, C
8, inductance L
1, L
2, L
3, L
4, resistance R
1, R
2, R
3, R
4, R
5, R
6, R
7, R
8, it is characterized in that being provided with common mode inhibition low-pass filter circuit and differential mode and suppress low-pass filter circuit, the common mode inhibition low-pass filter circuit suppresses low-pass filter circuit with differential mode connects, and the common mode inhibition low-pass filter circuit is provided with common mode choke coil B and capacitor C
1, C
2, C
3, C
4, the phase line output terminal of common mode choke coil is respectively through capacitor C
1, C
2, C
3Connect the zero line output of common mode choke coil, the zero line output of common mode choke coil is through capacitor C
4Connect ground wire, differential mode suppresses low-pass filter circuit and is provided with inductance L
1, L
2, L
3, L
4, resistance R
1, R
2, R
3, R
4, and capacitor C
5, C
6, C
7, C
8, inductance L
1, L
2, L
3, L
4Difference series resistance R
1, R
2, R
3, R
4, and connect the common mode choke coil output respectively, the series inductance resistance R of phase line
1, R
2, R
3Output is respectively through capacitor C
5, C
6, C
7The series inductance resistance R that connects zero line
4Output, the series inductance resistance R of zero line
4Output is through capacitor C
8Connect ground wire.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 02272864 CN2571049Y (en) | 2002-08-27 | 2002-08-27 | Filtration type power supply lightning protector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 02272864 CN2571049Y (en) | 2002-08-27 | 2002-08-27 | Filtration type power supply lightning protector |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2571049Y true CN2571049Y (en) | 2003-09-03 |
Family
ID=33737480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 02272864 Expired - Fee Related CN2571049Y (en) | 2002-08-27 | 2002-08-27 | Filtration type power supply lightning protector |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2571049Y (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100456647C (en) * | 2003-11-20 | 2009-01-28 | 华为技术有限公司 | Signal transmission circuit |
CN101510688B (en) * | 2009-03-25 | 2011-07-27 | 国网电力科学研究院 | Device for restraining power cord electromagnetic interference with lightning surge protection |
CN101599639B (en) * | 2008-06-06 | 2011-08-24 | 珠海市金宏辰新科技有限公司 | Single-phase power supply low-pass lightning arrester |
CN101578747B (en) * | 2006-11-10 | 2013-03-13 | 弗莱克斯电子有限责任公司 | Power filter |
CN103108455A (en) * | 2013-01-16 | 2013-05-15 | 佛山市华全电气照明有限公司 | Drive and control circuit for preventing high-voltage thunder strike damage to light-emitting diode (LED) light source |
-
2002
- 2002-08-27 CN CN 02272864 patent/CN2571049Y/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100456647C (en) * | 2003-11-20 | 2009-01-28 | 华为技术有限公司 | Signal transmission circuit |
CN101578747B (en) * | 2006-11-10 | 2013-03-13 | 弗莱克斯电子有限责任公司 | Power filter |
CN101599639B (en) * | 2008-06-06 | 2011-08-24 | 珠海市金宏辰新科技有限公司 | Single-phase power supply low-pass lightning arrester |
CN101510688B (en) * | 2009-03-25 | 2011-07-27 | 国网电力科学研究院 | Device for restraining power cord electromagnetic interference with lightning surge protection |
CN103108455A (en) * | 2013-01-16 | 2013-05-15 | 佛山市华全电气照明有限公司 | Drive and control circuit for preventing high-voltage thunder strike damage to light-emitting diode (LED) light source |
CN103108455B (en) * | 2013-01-16 | 2016-09-14 | 佛山市华全电气照明有限公司 | A kind of driving control circuit preventing LED light source high pressure broken by lightning |
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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 |