CN102447250A - Simple and practical lightning protection circuit - Google Patents

Simple and practical lightning protection circuit Download PDF

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CN102447250A
CN102447250A CN 201010298130 CN201010298130A CN102447250A CN 102447250 A CN102447250 A CN 102447250A CN 201010298130 CN201010298130 CN 201010298130 CN 201010298130 A CN201010298130 A CN 201010298130A CN 102447250 A CN102447250 A CN 102447250A
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resistant
input
varistor
insurance
high
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CN 201010298130
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Chinese (zh)
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王本欣
王永彬
苏周
董洁
顾永德
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深圳茂硕电源科技股份有限公司
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Abstract

The invention discloses a high voltage resistant and lightningproof simple and practical lightning protection circuit which comprises two input wires, wherein a high voltage resistant varistor is connected between the two input wires in a crossing way, a high current resistant insurance tube is connected in series to the input wire arranged at the front end of the varistor, a low current resistant insurance tube is connected in series to the input wire arranged at the back end of the varistor; or the circuit comprises two input wires, wherein a high voltage resistant varistor is connected between the two input wires in the crossing way, a high current resistant insurance tube is connected in series among the two input wires and the varistor, and the input wire arranged at the back end of the varistor is connected in series with a low current resistant insurance tube. In the simple and practical lightning protection circuit, with the adoption of the high voltage resistant varistor, the lightningproof requirement of 6000V can be satisfied, and the loss to a power grid caused by short circuit of the varistor can be also prevented; meanwhile, because the insurance tube arranged at the front end is the high current resistant insurance tube, the loss to the insurance tube caused by lightning stroke can be effectively prevented; and with the adoption of the invention, the loss to an electric appliance caused by overlarge power consumption of the electric appliance can be prevented, thereby the safety requirements are satisfied.

Description

一种简单实用的防雷电路 A simple and practical lightning protection circuit

技术领域 FIELD

[0001] 本发明公开一种防雷电路,特别是一种耐高压防雷的简单实用的防雷电路。 [0001] The present invention discloses a lightning protection circuit, particularly to a high voltage lightning simple and practical lightning protection circuit. 背景技术 Background technique

[0002] 目前,绝大多数电器都是交流市电进行供电,请参看附图1,根据安规规定,市电输入接口电路的输入线最前级都要串接一个保险管F1,以防止因内部短路而造成起火等事故,而在保险管Fl的选择上,一般电器根据其内部特性,都会选用熔断电流在2A〜3. 15A 的型号为T2A 250V的保险管。 [0002] At present, most appliances are AC mains powered, see Figure 1, according to safety regulations, the mains input line input interface circuit to be the most pre-series with a fuse F1, in order to prevent internal short circuit caused by fire and other accidents, and in the choice of fuse Fl, generally in accordance with its internal electrical characteristics, would prefer to use fusing current models in 2A~3. 15A is T2A 250V fuse. 为了防止因输入线遭雷击或出现浪涌等对电器造成损坏, 一般在电器的两条输入线之间都会串接一个压敏电阻M0V1,以达到防雷的目的。 In order to prevent damage to the electrical input line due to lightning surges or the like, generally between the two input lines are connected in series a collector varistor M0V1, to achieve the purpose of lightning protection. 在对防雷的要求上,一般电器要求可以防止2000V高压,电器不被损坏,这样的话,通常的压敏电阻MOVl选用型号为07D471K的即可满足要求。 On the requirements for lightning protection, general electrical requirements 2000V high voltage can be prevented, appliance is not damaged, so, usually varistor MOVl selected model to meet the requirements of 07D471K. 而在使用环境恶劣或者对防雷要求较高的场合,要求可以防止6000V高压,而这样的话,就产生了一个矛盾,当防雷要求可以达到时,在高压雷击的情况下,保险管就会烧毁,需要频繁的更换保险管,如果采用熔断电流较大的保险管,虽然在高压雷击的情况下,保险管不会烧毁,但是,当电器产生故障时,保险管也不会烧毁,而造成事故,这是一对无法解决的矛盾,现有技术中的设计者只能采用熔断电流较低的保险管,以保证电器的安全,祈祷电器不会遭受雷击。 In harsh environments or use of lightning protection requirements of the occasion, the requirements may prevent 6000V high voltage, and so, it created a contradiction, when the lightning protection requirements can be met, in the case of high-voltage lightning strike, will fuse burned, need frequent replacement fuse, if the fuse current fuse larger, although in the case of high-voltage lightning strike, the fuse will not burn, but when the electrical failure, the fuse will not burn, and cause accident, this is a contradiction that can not be resolved, the prior art designer can only use a lower fusing current fuse, to ensure the safety of electrical appliances, electrical prayer will not be struck by lightning.

发明内容 SUMMARY

[0003] 针对上述提到的现有技术中的高压防雷与低电流保护不能同时进行的缺点,本发明改变行业中的技术偏见,改变了常规设计角度,另辟蹊径,提供一种新的耐高压防雷的简单实用的防雷电路,其采用二级保险管配合压敏电阻,可同时实现高压防雷和低电流保护。 [0003] The disadvantages described above can not be performed simultaneously with respect to the prior art mentioned high voltage and low current lightning protection, the present invention changes the technical prejudice in the industry, changing the angle of conventional design, another way to provide a novel high pressure simple and practical lightning lightning protection circuit, which uses two fuses with the varistor can be realized and low current high voltage lightning protection simultaneously.

[0004] 本发明解决其技术问题采用的技术方案是:一种简单实用的防雷电路,电路包括两条输入线,两条输入线间跨接有耐高压压敏电阻,压敏电阻前端的一条输入线上串接有耐高电流保险管,压敏电阻后端的一条输入线上串接有耐低电流保险管。 [0004] The technical solution to solve the technical problems of the present invention: a simple and practical lightning protection circuit, the circuit comprising two input lines, between the two input lines have a high voltage across the varistor, the varistor front end an input line connected in series with a fuse resistance to a high current, an input line of the rear end of the varistor connected in series with a low resistance current fuse.

[0005] 本发明解决其技术问题采用的另一种技术方案是:一种简单实用的防雷电路,电路包括两条输入线,两条输入线间跨接有耐高压压敏电阻,两条输入线间与压敏电阻串联连接有耐高电流保险管,压敏电阻后端的一条输入线上串接有耐低电流保险管。 [0005] Another technical solution to solve the technical problems of the present invention: a simple and practical lightning protection circuit, the circuit comprising two input lines, between the two input lines have a high voltage across the varistor, two an input line connected between the varistor in series with a fuse resistance to a high current, an input line of the rear end of the varistor connected in series with a low resistance current fuse.

[0006] 本发明解决其技术问题采用的技术方案进一步还包括: [0006] solve the technical problems further aspect of the present invention further comprises:

[0007] 所述的耐高电流保险管和耐低电流保险管设置在同一输入线上。 [0007] The high resistance and low resistance current fuse current fuse disposed on the same input line.

[0008] 所述的两条输入线中一条为火线输入线,另一条为零线输入线,耐高电流保险管和耐低电流保险管设置在火线输入线上。 [0008] The two input lines of a FireWire input lines, another input line zero line, high corrosion resistance and a low current fuse current fuse disposed FireWire input line.

[0009] 所述的两条输入线中一条为火线输入线,另一条为零线输入线,耐低电流保险管设置在火线输入线上。 [0009] The two input lines of a FireWire input line, the other line of the input lines is zero, the low resistance current fuse disposed FireWire input line.

[0010] 所述的压敏电阻前端的一条输入线上串接有热敏电阻。 [0010] according to an input line of the front end of the varistor in series with a thermistor.

[0011] 所述的热敏电阻串接在零线上。 According to [0011] the zero line in series with the thermistor.

[0012] 所述的耐高电流保险管采用熔断电流为6. 3A以上的陶瓷保险管。 [0012] The high resistance current fuse blowing current use or more ceramic fuse 6. 3A.

3[0013] 所述的耐低电流保险管采用熔断电流为2A〜3. 15A的玻璃保险管。 3 [0013] The low resistance current fuse in a fused current 2A~3. 15A fuse the glass.

[0014] 所述的压敏电阻为14D471K或14D681K。 [0014] The varistor is 14D471K or 14D681K.

[0015] 本发明的有益效果是:本发明中,采用耐高压压敏电阻可起到6000V的防雷要求, 同时,在压敏电阻前端的输入线上串联有耐高电流保险管,或者与压敏电阻串联连接有耐高电流保险管,可防止因压敏电阻短路而造成的对电网的损坏,同时,由于前端保险管为耐高电流保险管,可有效防止因遭受雷击而对保险管造成的损坏,压敏电阻后端还串联有耐低电流保险管,又可以防止因电器用电量过大而对电器自身造成的损坏,满足安全要求。 [0015] Advantageous effects of the present invention are: the present invention, a high pressure may act varistors 6000V lightning protection requirements, while at the front end of the input line varistor in series with a fuse resistance to a high current, or with varistors are connected in series with a high resistance to current fuse, prevents damage to the grid because of a short circuit caused by the varistor, while, since the tip is resistant to high current fuse fuse, which can effectively prevent lightning while the fuse damage caused by the rear end of the varistor in series with a further low resistance current fuse, can also prevent damage due to excessive electrical power to the appliance itself due to meet safety requirements. 本发明中,还在压敏电阻前端的输入线路上串联有热敏电阻,起到防止对上电瞬间电压对电路的冲击作用。 In the present invention, a thermistor connected in series to the input line of the front end of the varistor also play a role to prevent the impact of the instantaneous voltage on the power circuit.

[0016] 下面将结合附图和具体实施方式对本发明做进一步说明。 [0016] The accompanying drawings and the following specific embodiments of the present invention will be further described. 附图说明 BRIEF DESCRIPTION

[0017] 图1为现有技术中简单实用的防雷电路原理图。 [0017] FIG. 1 is a simple and practical in the prior art lightning protection circuit diagram.

[0018] 图2为本发明实施例一电路原理图。 [0018] FIG. 2 illustrates a schematic diagram of a circuit embodiment of the present invention.

[0019] 图3为本发明实施例二电路原理图。 [0019] Figure 3 a schematic circuit diagram according to a second embodiment of the present invention.

具体实施方式 detailed description

[0020] 本实施例为本发明优选实施方式,其他凡其原理和基本结构与本实施例相同或近似的,均在本发明保护范围之内。 [0020] Example embodiment of the present invention, the present preferred embodiment, where the other principle and basic structure of the present embodiment, the same or similar, are within the scope of the present invention.

[0021] 实施例一:请参看附图2,本发明中,防雷电路包括两条输入线,其中一条作为火线输入线,另一条作为零线输入线,本实施例中,两条输入线间跨接有耐高压压敏电阻M0V2,本实施例中,为了实现压敏电阻M0V2的耐雷击电压可到6000V,压敏电阻选用型号为14D471K或14D681K的压敏电阻,具体实施时,也可以根据实际需要选用其他型号的压敏电阻。 [0021] Example a: See Figure 2, the present invention, the lightning protection circuit including two input lines, wherein an input line as the line of fire, the other as a neutral input line, according to the present embodiment, two input lines spanned between the high voltage varistor M0V2, in the present embodiment, in order to achieve anti-lightning varistor voltage can M0V2 to 6000V, the choice of model varistor or varistors 14D471K 14D681K of the specific embodiments may be other models varistor according to actual needs. 压敏电阻M0V2前端(即靠近电源输入的一端)的输入线上串接有第一保险管F2,本实施例中,第一保险管F2为耐高电流保险管,通常可选用熔断电流为6. 3A以上的陶瓷保险管,可选用型号为T6.3A250V的保险管。 Varistor M0V2 front end (i.e. near the end of the power input) is connected in series with a first input line fuses F2, in this embodiment, the first fuse F2 is resistant to high current fuse, can be selected fusing current is generally 6 more. 3A ceramic fuse, the choice of model T6.3A250V fuse. 压敏电阻M0V2后端(即靠近负载的一端)的输入线上串接有第二保险管F3,本实施例中,第二保险管F3为耐低电流保险管,通常可采用熔断电流为2A〜3. 15A的玻璃保险管,可选用型号为T2A 250V的保险管。 Varistor M0V2 rear end (i.e. near the end of a load) connected in series with a second input line fuse F3, in this embodiment, the second fuse F3 is the low resistance current fuse, the fuse is generally employed current is 2A ~3. 15A glass fuse, the choice of model T2A 250V fuse. 本实施例中,第一保险管F2和第二保险管F3串接在同一条输入线上,通常为串联连接在火线上。 In this embodiment, the first and second fuses F2 F3 fuse is connected in series with an input line, it is generally connected in series on the line of fire. 本实施例中,压敏电阻M0V2前端的零线输入线上串接有热敏电阻,可防止上电瞬间电网高压电对用电元件的冲击。 In this embodiment, the leading end of the varistor M0V2 neutral input line in series with a thermistor to prevent the high voltage power grid instantaneous impact element electricity.

[0022] 本实施例还有另一种变形的实施方式,就是第一保险管F2和第二保险管F3分别串接在不同的输入线上。 [0022] Still another embodiment of the present modified embodiment of the embodiment, the first fuse is a second fuse F2 and F3 are connected in parallel different input lines.

[0023] 实施例二:请参看附图3,本实施例中,防雷电路包括两条输入线,其中一条作为火线输入线,另一条作为零线输入线,本实施例中,两条输入线间跨接有耐高压压敏电阻M0V2,本实施例中,为了实现压敏电阻M0V2的耐雷击电压可到6000V,压敏电阻选用型号为14D471K或14D681K的压敏电阻,具体实施时,也可以根据实际需要选用其他型号的压敏电阻。 [0023] Second Embodiment: See Fig. 3, the present embodiment, the lightning protection circuit including two input lines, wherein an input line as the line of fire, the other as a neutral input line, according to the present embodiment, two input when the line has a high voltage across the varistor M0V2, in the present embodiment, in order to achieve anti-lightning varistor voltage can M0V2 to 6000V, the choice of model varistor or varistors 14D471K 14D681K, in particular embodiments, also other models can varistor according to actual needs. 两条输入线间与压敏电阻M0V2串联连接有第一保险管F2,本实施例中,第一保险管F2为耐高电流保险管,通常可选用熔断电流为6. 3A以上的陶瓷保险管,可选用型号为T6.3A250V的保险管。 Two input lines are connected between the varistor M0V2 first fuse F2 is connected in series, in this embodiment, the first fuse F2 is resistant to high current fuse, typically fusing current can be selected or more ceramic fuse 6. 3A , the choice of model tube T6.3A250V insurance. 压敏电阻M0V2后端(即靠近负载的一端)的输入线上串接有第二保险管F3,本实施例中,第二保险管F3为耐低电流保险管,通常可采用熔断电流为2A〜 3. 15A的玻璃保险管,可选用型号为T2A250V的保险管。 Varistor M0V2 rear end (i.e. near the end of a load) connected in series with a second input line fuse F3, in this embodiment, the second fuse F3 is the low resistance current fuse, the fuse is generally employed current is 2A ~ 3. 15A fuse the glass, the choice of model T2A250V fuse. 本实施例中,第二保险管F3串联连接在火线上。 In this embodiment, the second fuse F3 is connected in series in the line of fire. 本实施例中,压敏电阻M0V2前端的零线输入线上串接有热敏电阻,可防止上电瞬间电网高压电对用电元件的冲击,本实施例中,热敏电阻也可以串接在火线输入线上。 In this embodiment, the leading end of the varistor M0V2 neutral input line in series with a thermistor to prevent the high voltage power grid instantaneous power impact element, in the present embodiment, the thermistor may be a string FireWire input connected to the line.

[0024] 上述防雷电路可串接在用电电器的市电输入端上,本实施例中,防雷电路后端为典型的开关电源电路,可通过本发明对开关电源电路进行防雷保护,具体实施时,也可将本发明用于电视、冰箱、空调等等用电电器的市电输入端上,对电器进行防雷保护。 [0024] The lightning protection circuit may be connected in series with the mains electrical input power, the present embodiment, the rear end of a typical lightning protection circuit switching power supply circuit, lightning protection may be made by switching power supply circuit of the present invention , the specific embodiment, it may be electrical input of the present invention for TVs, refrigerators, air conditioners and the like electrical appliances City, for lightning protection of the appliance.

[0025] 本发明中,采用耐高压压敏电阻可起到6000V的防雷要求,同时,在压敏电阻前端的输入线上串联有耐高电流保险管,或者与压敏电阻串联连接有耐高电流保险管,可防止因压敏电阻短路而造成的对电网的损坏,同时,由于前端保险管为耐高电流保险管,可有效防止因遭受雷击而对保险管造成的损坏,压敏电阻后端还串联有耐低电流保险管,又可以防止因电器用电量过大而对电器自身造成的损坏。 [0025] the present invention, a high pressure may act varistors 6000V lightning protection requirements, while at the front end of the input line varistor in series with a fuse resistance to a high current, varistor or connected in series with a resistance high current fuse, a short circuit can be prevented because the varistor damage caused on the grid, while, since the tip is resistant to high current fuse fuse, can effectively prevent damage due to lightning caused fuses, varistors the rear end of the series is also low current fuse resistance, and can prevent damage due to excessive electrical power to the electrical self-inflicted. 本发明中,还在压敏电阻前端的输入线路上串联有热敏电阻,起到防止对上电瞬间电压对电路的冲击作用。 In the present invention, a thermistor connected in series to the input line of the front end of the varistor also play a role to prevent the impact of the instantaneous voltage on the power circuit.

5 5

Claims (10)

  1. 1. 一种简单实用的防雷电路,其特征是:所述的电路包括两条输入线,两条输入线间跨接有耐高压压敏电阻,压敏电阻前端的一条输入线上串接有耐高电流保险管,压敏电阻后端的一条输入线上串接有耐低电流保险管。 1. A simple and practical lightning protection circuit, characterized in that: said circuit comprises two input lines, between the two input lines have a high voltage across the varistor, the varistor a front end of the input lines in series there are resistant to high current fuse, a rear end of the input line varistor connected in series with a low resistance current fuse.
  2. 2.根据权利要求1所述的简单实用的防雷电路,其特征是:所述的耐高电流保险管和耐低电流保险管设置在同一输入线上。 The simple and practical lightning protection circuit according to claim 1, wherein: said high resistance and low resistance current fuse current fuse disposed on the same input line.
  3. 3.根据权利要求2所述的简单实用的防雷电路,其特征是:所述的两条输入线中一条为火线输入线,另一条为零线输入线,耐高电流保险管和耐低电流保险管设置在火线输入线上。 The simple and practical lightning protection circuit according to claim 2, characterized in that: one of two input lines to a FireWire input line, the other line of the input line is zero, low and high corrosion resistance current fuse current fuse disposed FireWire input line.
  4. 4. 一种简单实用的防雷电路,其特征是:所述的电路包括两条输入线,两条输入线间跨接有耐高压压敏电阻,两条输入线间与压敏电阻串联连接有耐高电流保险管,压敏电阻后端的一条输入线上串接有耐低电流保险管。 A simple and practical lightning protection circuit, characterized in that: said circuit comprises two input lines, between the two input lines have a high voltage across the varistor, the varistor is connected in series between two input lines there are resistant to high current fuse, a rear end of the input line varistor connected in series with a low resistance current fuse.
  5. 5.根据权利要求4所述的简单实用的防雷电路,其特征是:所述的两条输入线中一条为火线输入线,另一条为零线输入线,耐低电流保险管设置在火线输入线上。 The simple and practical lightning protection circuit according to claim 4, characterized in that: one of two input lines to a FireWire input line, the other line of the input lines is zero, the low resistance current fuse disposed FireWire enter online.
  6. 6.根据权利要求1或2或3或4或5所述的简单实用的防雷电路,其特征是:所述的压敏电阻前端的一条输入线上串接有热敏电阻。 The simple and practical lightning protection circuit 1 or 2 or 3 or 4 or claim 5, characterized in that: said input lines to a front end of the varistor in series with a thermistor.
  7. 7.根据权利要求6所述的简单实用的防雷电路,其特征是:所述的热敏电阻串接在零线上。 The simple and practical lightning protection circuit according to claim 6, characterized in that: said thermistor connected in series with the zero line.
  8. 8.根据权利要求1或2或3或4或5所述的简单实用的防雷电路,其特征是:所述的耐高电流保险管采用熔断电流为6. 3A以上的陶瓷保险管。 The simple and practical lightning protection circuit 1 or 2 or 3 or 4 or claim 5, wherein: the resistance to high current fuse blowing current use or more ceramic fuse 6. 3A.
  9. 9.根据权利要求1或2或3或4或5所述的简单实用的防雷电路,其特征是:所述的耐低电流保险管采用熔断电流为2A〜3. 15A的玻璃保险管。 9. The simple and practical lightning protection circuit 1 or 2 or 3 or 4 or claim 5, wherein: said low-resistance current fuse in a fused glass 2A~3 15A current fuse.
  10. 10.根据权利要求1或2或3或4或5所述的简单实用的防雷电路,其特征是:所述的压敏电阻为14D471或14D681。 10. A lightning protection circuit according to a simple and practical 1 or 2 or 3 or 4 or claim 5, characterized in that: said pressure sensitive resistance or 14D471 14D681.
CN 201010298130 2010-09-30 2010-09-30 Simple and practical lightning protection circuit CN102447250A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106208786A (en) * 2016-08-25 2016-12-07 苏州苏宝新能源科技有限公司 Solar air conditioner system having functions of self-discharging, H-bridge inversion and power supply lightning protection

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4740859A (en) * 1983-03-31 1988-04-26 Leon A. Hoskamer Transient voltage surge suppressor and line short monitor
CN201523229U (en) * 2009-11-02 2010-07-07 杭州华三通信技术有限公司 Surge protective circuit and device containing common mode choke
CN201533161U (en) * 2009-10-30 2010-07-21 深圳创维数字技术股份有限公司 Electrical equipment lightning-protection device
CN201829942U (en) * 2010-09-30 2011-05-11 深圳茂硕电源科技股份有限公司 Simple and practical lightning protection circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4740859A (en) * 1983-03-31 1988-04-26 Leon A. Hoskamer Transient voltage surge suppressor and line short monitor
CN201533161U (en) * 2009-10-30 2010-07-21 深圳创维数字技术股份有限公司 Electrical equipment lightning-protection device
CN201523229U (en) * 2009-11-02 2010-07-07 杭州华三通信技术有限公司 Surge protective circuit and device containing common mode choke
CN201829942U (en) * 2010-09-30 2011-05-11 深圳茂硕电源科技股份有限公司 Simple and practical lightning protection circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106208786A (en) * 2016-08-25 2016-12-07 苏州苏宝新能源科技有限公司 Solar air conditioner system having functions of self-discharging, H-bridge inversion and power supply lightning protection

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