CN105024342A - Lightning protection single-phase leakage protector - Google Patents
Lightning protection single-phase leakage protector Download PDFInfo
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- CN105024342A CN105024342A CN201410170744.8A CN201410170744A CN105024342A CN 105024342 A CN105024342 A CN 105024342A CN 201410170744 A CN201410170744 A CN 201410170744A CN 105024342 A CN105024342 A CN 105024342A
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Abstract
The invention is a lightning protection single-phase leakage protector used in a household power system and used for lightning stroke protection and leakage protection. The lightning protection single-phase leakage protector comprises two main components including single-phase power breakers (usually called air switch) and a lightning protection and leakage detection driving device. When lightning stroke occurs, lightning stroke energy is automatically absorbed and guided underground and power is automatically cut off. When an electric shock accident occurs or electric appliance insulation damages so as to cause residual current greater than 30mA in a power line, the lightning protection single-phase leakage protector activates leakage protection and automatically cut off power. When a piezoresistor is deteriorated and overheated, the lightning protection single-phase leakage protector may timely drive a release with a temperature-controlled switch so as to cut off power. In the meantime, the lightning protection single-phase leakage protector transforms a lightning protection failure sign from green into red and gives corresponding indication information of a lightning protection device failure fault.
Description
Technical field
This product relates to a kind of new-type lighning proof type monophase leakage protector, in the electric power system of family, makes lightning Protection and leakage protection.
Background technology
In numerous families domestic at present, the apparatus for protecting power supply installed, generally has three kinds, is respectively fuse, air switch, earth leakage protective device.Earth leakage protective device generally only provides creepage protection function, when residual current is more than 30mA, starts earth leakage protective, disconnecting power switch.
Because of jumbo professional lightening protection apparatus, in price costly, and Installation and Debugging and maintenance, need professional to operate, be not easy to the consumption of vast general public and use.For considering of the aspects such as price, domestic seldom have family's installation lightening protection apparatus initiatively.
Existing industry universal standard for lightning surge, employing be classification Lighting Protection Measures, be generally divided into one-level lightning protection, secondary lightning protection, three grades of lightning protection.This thunder And Lightning Preventive Measures, all has fine protection effect for much important urban architecture.But the urban residents vast for China and the user of the combination area of city and country, because domestic architecture comparatively disperses, power circuit major part is built for outdoor, and power circuit was easy to be subject to outdoor thunderbolt impact in summer, produced induced lightening.
The building distribution situation of this single isolated house, if go to implement by existing universal lightning protection installation code, allow every household with a set of one-level lightning protection device, add a set of secondary lightning protection device, add a set of three grades of lightning protection devices again, carry out lightning protection, then the price of lightning protection configuration is very high, very uneconomical.The total price of its thunder resisting equipment, can allow most common rural households be difficult to bear.
Current vast rural area, household electrical appliance increase day by day, and simple and effective, cheap and good-quality lightning protection device does not follow up in time and popularizes, cause the household electrical appliance of domestic countless rural subscribers to be often struck by lightning damage, sometimes also occur because the accident of causing death is led in thunderbolt.Under this reality, a kind of good and cheap, simple and effective lightning protection device of necessary design, spreads to the vast rural area in the whole nation, to vast rural area, with bringing good lightning protection in electric process.
Domestic in recent years, Shang You minority enterprise devises the earth leakage protective device of lighning proof type, but the general structure of product is perfect not enough, and it is too high that product exists raw material cost, and volume is excessive waits deficiency; Problem overheated on fire when losing efficacy for lightning protection component, does not take effective safeguard procedures.Thus the lighning proof type earth leakage protective device produced of Present Domestic enterprise, is unfavorable for that nationwide is popularized widely.The earth leakage protective device of this kind of lighning proof type, also needs to make further optimal design, the raw material cost of product is done further to reduce, simplifies production technology further, reduce the overall price of product, simultaneously the reliability and security of improving product.When being struck by lightning, can effectively absorb thunderbolt energy, simultaneously deenergization fast; When lightning protection component is about to lose efficacy, energy auto power off, prevents fire incident.
Summary of the invention
A new-type lighning proof type earth leakage protective device, product is used for, in the electric power system of family, making lightning Protection and leakage protection.When the situation of thunderbolt occurs, automatic absorption thunderbolt energy, is incorporated into underground by thunderbolt energy, and auto power off; Occur when there being electric shock accidents or electrical apparatus insulation damage, when the residual current in power circuit is greater than 30mA, product starts creepage protection function, auto power off.
The lightning protection circuit part of this product, multiplexing most of electric-leakage detection circuit, can effectively judge lightning strike information and differentiate, and carry out trip protection; There is deterioration in piezo-resistance in product, when there is overheated situation, drives release timely by temperature detect switch (TDS), deenergization.
Compared with prior art, this product has made following optimize and improve:
One is reduction of the cost of raw material, new-type product, just on the basis of original earth leakage protective device, add three piezo-resistances, a gas discharge tube, the bimetallic temperature detect switch (TDS) of an open type, miniature " lightning protection component inefficacy operating magnet ", earth connection, earth terminal etc., these elements are universal electronic components and parts, and material price is cheap; Two is because lightning protection part, multiplexing most electric-leakage detection circuit, so significantly simplify production technology, is convenient to that factory carries out in enormous quantities, the production of low cost; Three is the volumes reducing product, is convenient to actual field and carries out installation and maintenance; Four to be that product uses simple, and outside not increasing complicated is not easy to the function that people understand operation, is convenient to ordinary consumer and uses; Five is effectively to prevent piezo-resistance from occurring overheated risk on fire, improves the safety and reliability of product.
This product is made up of two large parts, and its profile as shown in Figure 1.First parts are single phase poaer supply circuit breaker (being commonly called as air switch), and second largest parts are lightning protection and detection of electrical leakage drive unit.
The pie graph of lightning protection and detection of electrical leakage drive unit, as shown in Figure 2.Its circuit is made up of power input interface circuit 1, lightning protection circuit 2, thunderbolt event detection circuit 3, pressure responsive resistor failure testing circuit 4, zero sequence current mutual inductor 5, residual current detection circuit 6, control machines and the trip circuit 7 being core by " leakage current test control chip ", the trial jump circuit 8 that leaks electricity, power output interface circuit 9.
The Inner Constitution of lightning protection circuit is: between fire (L) line and zero (N) line, cross-over connection has a piezo-resistance and gas discharge tube; Between L line and ground wire, cross-over connection has a piezo-resistance; Between N line and ground wire, cross-over connection has a piezo-resistance.
The Inner Constitution of thunderbolt event detection circuit is the ground wire that connects after piezo-resistance, first through in the middle of zero sequence current mutual inductor, is then connected with the earth.
The formation of pressure responsive resistor failure testing circuit is: between two piezo-resistances that ground wire is connected, accompany an open type temperature-sensitive temperature detect switch (TDS), scribble heat-conducting silicone grease between temperature detect switch (TDS) and piezo-resistance, temperature detect switch (TDS) is cascaded with electric leakage release electromagnet, lightning protection invalid markers drive magnet.
Contrast the structured flowchart in accompanying drawing 2 below, describe operation principle and lightning protection, the earth leakage protective course of work of product:
When thunder and lightning event occurs, lightning surge electric current, after flowing through single phase poaer supply circuit breaker, by the power input interface circuit 1 in accompanying drawing 2, enter in lightning protection and leakage current test drive unit, lightning protection circuit 2 starts lightning protected function.The surge current of thunderbolt, via the earth connection in power output interface circuit 9, is directed to underground, and thunderbolt energy is released in the earth, and meanwhile, between L and N line, institute connects lightning protection component and is also activated, and residual voltage value of being struck by lightning is limited in a lower scope.The surge current of thunderbolt is in the process of releasing the earth, flow through thunderbolt event detection circuit 3, detected by zero sequence current mutual inductor 5 and there occurs thunderbolt event, and then sensed by the residual current detection circuit 6 being core by " leakage current test control chip ", " leakage current test control chip " drives control machines and release circuit 7, cause release generation action, drive single phase poaer supply circuit breaker thus, disconnect single phase poaer supply.
When deterioration condition appears in " piezo-resistance that L line is connected with the earth " or " piezo-resistance that N line is connected with the earth ", when piezo-resistance surface temperature is too high, " pressure responsive resistor failure testing circuit 4 " is activated, the junction closure of open type temperature-sensitive temperature detect switch (TDS), causes electric leakage release electromagnet and lightning protection invalid markers drive magnet generation action; Drive single phase poaer supply circuit breaker thus, disconnect single phase poaer supply, cut off the electricity supply automatically, meanwhile, lightning protection invalid markers becomes red by green, prompting user, and lightning protection component lost efficacy, and needs change protector or keep in repair protector.By this safeguard measure, the overheated risk on fire of piezo-resistance effectively can be avoided.
When there is leakage current, leakage current detects via zero sequence current mutual inductor 5, produces a voltage signal; This voltage signal is sensed by " the residual current detection circuit 6 being core by ' leakage current test control chip ' "; The preset value of this signal value and chip internal compares by " leakage current test control chip "; if leakage current value is now greater than 30mA; then " leakage current test control chip " drives control machines and release circuit 7; cause release generation action; drive single phase poaer supply circuit breaker; disconnect single phase poaer supply, earth leakage protective action occurs.
During trial jump button when pressing in " electric leakage trial jump circuit 8 ", through the L line of zero-sequence transformer and N line, produce the residual current that is greater than 30mA, this electric current detects via zero sequence current mutual inductor 5, produces a voltage signal; This voltage signal is sensed by " the residual current detection circuit 6 being core by ' leakage current test control chip ' "; " leakage current test control chip " drives control machines and release circuit 7; cause release generation action; drive single phase poaer supply circuit breaker thus; disconnect single phase poaer supply, trial jump protection act occurs.This function for testing the action of earth leakage protective and lightning protection, whether effectively.
Claims (10)
1. a lighning proof type monophase leakage protector, is characterized in that: product is made up of two large parts, and first parts are single phase poaer supply circuit breakers (being commonly called as air switch) of two one, and second largest parts are a lightning protection and detection of electrical leakage drive unit.
2. a kind of lighning proof type monophase leakage protector according to claim 1, is characterized in that: described single phase poaer supply circuit breaker, the binding post that its inside inputs for power supply primarily of; A bimetal leaf for overcurrent protection; An electromagnet for short-circuit protection; An arc-extinguish chamber playing arc extinguishing effect in big current cutting-off process; One auxiliary switch contact; The binding post that a power supply exports; The switch thrust unit of a plastic material; The material compositions such as the plastic casing of a flame retardant type.
3. a kind of lighning proof type monophase leakage protector according to claim 1; it is characterized in that: described lightning protection and detection of electrical leakage drive unit, its inside by power input interface circuit, lightning protection circuit, thunderbolt event detection circuit, pressure responsive resistor failure testing circuit, zero sequence current mutual inductor circuit, being core by " leakage current test control chip ", residual current detection circuit, thyristor gating circuit, release circuit, trial jump circuit, power output interface circuit etc. form.
4. lightning protection according to claim 3 and detection of electrical leakage drive unit, it is characterized in that: described power input interface circuit, be draw two wires by device inside, these two wires are connected with N terminals with the L terminals of single phase poaer supply circuit breaker output respectively.
5. lightning protection according to claim 3 and leakage current test drive unit, is characterized in that: described lightning protection circuit, Inner Constitution is, between fire (L) line and zero (N) line, cross-over connection has a piezo-resistance and a gas discharge tube; Between fire (L) line and ground (G) line, cross-over connection has a piezo-resistance; Between zero (N) line and ground (G) line, cross-over connection has a piezo-resistance.
6. lightning protection according to claim 3 and leakage current test drive unit, it is characterized in that: described thunderbolt event detection circuit, the constituted mode of this circuit is, by the ground wire be connected with piezo-resistance, first through in the middle of zero sequence current mutual inductor, and then be connected with the earth terminal of power output interface circuit.
7. lightning protection according to claim 3 and leakage current test drive unit, it is characterized in that: described zero sequence current mutual inductor circuit, in the middle of zero-sequence transformer through have fire (L) line, zero (N) line, (G) line three lines, what the core material of zero-sequence transformer adopted is the noncrystal soft magnetic material or permalloy material that coercive force is little.
8. lightning protection according to claim 3 and leakage current test drive unit, it is characterized in that: described pressure responsive resistor failure testing circuit, its concrete circuit is configured to, two piezo-resistances be connected with ground wire, an open type temperature-sensitive temperature detect switch (TDS) is accompanied in the middle of it, scribble heat-conducting silicone grease between temperature detect switch (TDS) and piezo-resistance, temperature detect switch (TDS) is cascaded with electric leakage release electromagnet, lightning protection invalid markers drive magnet.
9. lightning protection according to claim 3 and leakage current test drive unit, it is characterized in that: described power output interface circuit, this circuit is made up of three binding posts, be respectively the fire terminals of (L) line, zero (N) line terminals, the terminals of (G) line; The terminals of terminals and zero (N) line of fire (L) line, for exporting 220V single phase poaer supply to domestic electric appliance; The terminals of ground wire, for external ground wire; Pass through earth connection, lightning protection is connected with the earth with leakage current test drive unit, by the lightning surge current drain in power circuit in the earth, prevent power consumption equipment damage by too high lightning surge voltage, play effect domestic electric appliance being carried out to lightning Protection.
10. pressure responsive resistor failure testing circuit according to claim 8, it is characterized in that: described lightning protection invalid markers, when piezo-resistance is normal, this is marked on product casing shown in green in corresponding indication window, when pressure responsive resistor failure, by lightning protection invalid markers drive magnet, drive this mark, change into red status by permanent for green state; On product casing, in corresponding indication window, change display into by display green red.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410170744.8A CN105024342A (en) | 2014-04-27 | 2014-04-27 | Lightning protection single-phase leakage protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410170744.8A CN105024342A (en) | 2014-04-27 | 2014-04-27 | Lightning protection single-phase leakage protector |
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| CN105024342A true CN105024342A (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410170744.8A Pending CN105024342A (en) | 2014-04-27 | 2014-04-27 | Lightning protection single-phase leakage protector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932637A (en) * | 2016-06-20 | 2016-09-07 | 深圳远鹏装饰集团有限公司 | Lightning-protection grounding system used for machine room |
| CN107462789A (en) * | 2017-07-17 | 2017-12-12 | 南京宁普防雷设备制造有限公司 | A kind of on-line analysis surge protector life-span and the method for failure |
| CN107809103A (en) * | 2016-09-08 | 2018-03-16 | 浙江正泰电器股份有限公司 | Lighning proof type residual current action breaker |
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| JP2006352955A (en) * | 2005-06-13 | 2006-12-28 | Otowa Denki Kogyo Kk | Leakage protective relay |
| CN101192751A (en) * | 2007-08-15 | 2008-06-04 | 杨发生 | Intelligent home electrical appliance and automatic power reclosing protection breaker |
| CN101237138A (en) * | 2008-02-13 | 2008-08-06 | 浙江正泰建筑电器有限公司 | Super thunder-prevention protection mobile jack |
| CN202905642U (en) * | 2012-10-29 | 2013-04-24 | 山东开泰石化股份有限公司 | Lightning protection leakage circuit breaker |
| CN203326593U (en) * | 2013-06-21 | 2013-12-04 | 西安市西无二电子信息集团有限公司 | Common mode and differential mode compatible full-function surge protection device |
| CN203466383U (en) * | 2013-08-23 | 2014-03-05 | 重庆瑞升康博电气有限公司 | Intelligent static safe energy-saving multifunctional socket with zero power consumption |
| CN203932972U (en) * | 2014-04-27 | 2014-11-05 | 章五明 | Lighning proof type monophase leakage protector |
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2014
- 2014-04-27 CN CN201410170744.8A patent/CN105024342A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1189711A (en) * | 1997-01-29 | 1998-08-05 | 陈艺通 | Sensitively cut-off protector |
| JP2006352955A (en) * | 2005-06-13 | 2006-12-28 | Otowa Denki Kogyo Kk | Leakage protective relay |
| CN101192751A (en) * | 2007-08-15 | 2008-06-04 | 杨发生 | Intelligent home electrical appliance and automatic power reclosing protection breaker |
| CN101237138A (en) * | 2008-02-13 | 2008-08-06 | 浙江正泰建筑电器有限公司 | Super thunder-prevention protection mobile jack |
| CN202905642U (en) * | 2012-10-29 | 2013-04-24 | 山东开泰石化股份有限公司 | Lightning protection leakage circuit breaker |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932637A (en) * | 2016-06-20 | 2016-09-07 | 深圳远鹏装饰集团有限公司 | Lightning-protection grounding system used for machine room |
| CN105932637B (en) * | 2016-06-20 | 2018-05-25 | 深圳远鹏装饰集团有限公司 | A kind of lightning protection of equipment room earthed system |
| CN107809103A (en) * | 2016-09-08 | 2018-03-16 | 浙江正泰电器股份有限公司 | Lighning proof type residual current action breaker |
| CN107809103B (en) * | 2016-09-08 | 2019-12-06 | 浙江正泰电器股份有限公司 | Lightning protection type residual current operated circuit breaker |
| CN107462789A (en) * | 2017-07-17 | 2017-12-12 | 南京宁普防雷设备制造有限公司 | A kind of on-line analysis surge protector life-span and the method for failure |
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Application publication date: 20151104 |
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