Ndakamboparadza $30,000 inverter yezuvanekuti ndakapotsa bvunzo yeSPD yemaminitsi mashanu— usadzokorora chikanganiso ichocho.

Pa Fekitori yeWenzhou SPD, isu edza yega yega mudziyo wekudzivirira kukwira kwemvuranzira chaiyo inosanganisira kuongorora nemaziso, kudzivirira kuputira, dziviriro yemagetsi (VPR), kubuda kwemvurauye kusimbiswa kwechiratidzo.

Chinyorwa chino chinotsanangura danho rega rega mu Chirungu chisina hunyanzvi, zvichibva pane zvakafanana cheki yekupasa/kukundikanatinoshandisa Mapurazi ezuva ekuGermany neUS.

Sei Kuedzwa kweSPD Nyaya dziri muSolar uye Industrial Power Systems

Ndichiri kurangarira kunhuhwirira kwesilicon yakatsva apo varistor yakasunungukaakabvumira a 6 kV kukwiramuvatengi vekuUS bhokisi remusanganiswa wezuva.

Poshi SPD isina kuedzwainogona kudzima zvese purazi rezuva. A bvunzo yemaminitsi mavirizvinogona kudzivirira mavhiki ekuzororauye chengetedza yako goho resimba uye purofiti.

Chii chinoitika kana SPD ikakundikana mumunda?

A mudziyo wekudzivirira we surge wakundikana (SPD)haiite ruzha — inomira kushanda chinyararire.
Iyo LED yekunyevera inogona kuramba iri girinikunyangwe mushure me varistoryakatsemuka kana kuti yakapfupika.

Muna 2022, timu yedu yakatsvaga Kuvharwa kwe inverter ye 1.5 MWmuIndia ku imwe yakakundikana SPDiyo yakanga yava waya. Nzvimbo yacho yakarasikirwa Mazuva gumi nemana ekubuda kwezuva kwakanyanya, kudhura Zvakawedzerwa ka45kupfuura SPD pachayo.

Zuva iroro ndakadzidza mutemo wegoridhe: bvunzo yakachipa ichiri yakachipa pane yakadzima zvishoma.

Matambo ezuva anovanza sei over-voltage

Mukati masisitimu ezuva re photovoltaic (PV), iyo Tambo dzeDChazvina kusungirirwa pasi zvakananga — "kuyangarara" pamusoro pesimba renyika.
Kana mheni inomhanya kana kuchinja zvishomainorova divi reDC, inogona wedzera voltage yese yetambo neanopfuura 30 kVkwema microseconds mashoma chete.

Iyo inverter inotsanangura iyo surge se njodzi huru yemagetsi akawandisa, kazhinji zvichikonzera kuvharwa zvachose.

Kuti ndidzivise izvi, ndinoita Bvunzo rekudzivirira kuputira kwe1 kVpabhechi rega rega reSPD risati ratumirwa.
Kana kuverenga kuchidonha pasi apa 10 MΩ, chikwata chinorambwa ipapo ipapo.

Tafura iri pazasi inoratidza kuputira chaiko uye data rekuyedza reVPRkubva kumabheti makumi maviri ekupedzisira ekugadzira pakambani yedu Fekitori yeWenzhou SPD.

Mienzaniso yemhedzisiro kubva kuDC SPD batch testing — insulation resistance uye voltage protection level (VPR) pasi pe1 kV test conditions.

Mota dzemaindasitiri dzakangotsamwawo

Maindasitiri Madhiraivha emota dzeACdziri panjodzi yekukundwa ne over-voltage yenguva pfupi sezvakaita solar arrays - dzimwe nguva dzakatonyanya.

A Panera yekudzora mota ye480 Vine mukana mudiki wekukwira kwesimba kupfuura tambo ye1000 V PV, izvo zvinoita kuti pave nesarudzo nekuyedzwa kwe AC SPD (Chishandiso Chekudzivirira Kukwira)kutsoropodza zvachose.

Mumwe wevatengi vangu vekuUS vanogadzira mapaneli akadzidza izvi nenzira yakaoma. module yeSPD isina kuedzwazvakakonzera kuvharwa kusingatarisirwi neMugovera manheru, zvikamumanikidza kubhadhara vashandi vake nguva yekuwedzera kuti vatangezve fekitari.

Kubva ipapo, anoramba achida kugamuchira mushumo wezvino wekubuda kwemvurapabhechi rega rega ndisati ndabvumidza odha yekutenga. Ndinongoshandisa mari chete $0.40 yenguva yekuedza payuniti imwe neimwe, uye anoponesa vashandi vanopfuura $400— a 1,000× kudzokapakutarisa mhando yechinhu chiri nyore.

Zvishandiso Zvaunofanira Kuedza Chishandiso Chekudzivirira Kukwira

akamboona mutengi achiyedza mudziyo wekudzivirira surge ne Zvishandiso zvemadhora mapfumbamwe - multimeter yechitoro — yakapona miedzo miviri chaiyo isati yapera.

Mukati medu Labhoritari yefekitori yeSPD muWenzhou, tinovimba ne nyanzvi michina yekuedza kuvhiya kwemvurayakagadzirirwa zvese zviri zviviri Kuongorora kweDC neAC SPD.

Heano maturusi mana akakoshamugadziri wese anofanira edza mudziyo wekudzivirira kukwira kweropa (SPD)zvakachengeteka uye nemazvo:

①A multimeter yedhijitari yakaganhurirwakuti pave nekutarisa voltage yekutanga uye kuenderera mberi kwekushanda kwayo.

②A 1 kV insulation resistance tester (megger)kuti uone kana madziro ari pakati pemitsetse nepasi.

③A jenareta inotakurika ye surge (1.2/50 µs kana 8/20 µs waveform)kuyera voltage chaiyo yekumanikidza pasi pemutoro.

④A kamera yemifananidzo yekupisakuona nzvimbo dzakavanda uye varistors dzisati dzakundikana.

Zvishandiso izvi zvina zvinofukidza pamwe chete pamusoro pe99% yezviitiko zvekuyedzwa kweSPD, kubva paQA yefekitori kusvika pakuongororwa kwenzvimbo mumapurazi ezuva kana mafekitori emaindasitiri.

Ndinonyatsoda jenareta yekuvhiya here?

Zvechokwadi Ehe— kana uchida kuziva kuti sei mudziyo wekudzivirira kukwira kwemvura (SPD)anoita pasi pe simba remagetsi rechokwadi, a jenareta yekuwedzera simbahazvisi zvekusarudza.

A meggerinogona kuyera chete insulation uye open-circuit voltage, asi haikwanise kutevedzera 8/20 µs kana 1.2/50 µs surge waveformizvo zvinosarudza kuti SPD inodzivirira sei simba munguva yekuchinja kwesimba.

Mukati medu labhoritari yekuedza yeSPD yefekitori, ndinoshandisa Jenareta yekuwedzera ye1.2/50 µs yakaiswa pa6 kV.
Zve Mhando dzeDC 600 V SPD, iyo dziviriro yemagetsi (VPR)inofanira kugara pasi pe1 kVpanguva yebvunzo.

SPD yega yega yatinotumira yakanyorwa kuti kukosha kweVPR kwakayerwa— nhamba iyi yakajeka inovaka kuvimba nevatengi vedu mu Germany, US, neIndia, vanovimba nekushanda kwedziviriro kwakasimba uye kwakasimbiswa.

Ndingarenda here pane kutenga?

Zvechokwadi — kana huwandu hweSPD yako kana huwandu hwekuyedza huri hwemwaka, kuhaya michina yekuedza kudzivirira kukwira kwemvurainogona kuva mari yekudyara yakangwara.

Semuenzaniso, patinomhanya Mabheti eSPD ane zvidimbu zvishanu,000pafekitori yedu yeWenzhou, ini renda kamera yekupisa yeFLIRnezve $90 pasvondo.

Iyo bvunzo yekuona nezvekupisainobatsira kuona varistor dzinopisaizvo zvingave zvichiri pasa bvunzo ye megger, zvichiratidza zvikanganiso zvakavanzwa zvisati zvatumirwa.

Mune imwe nguva yekugadzira, takawana SPD nhatu dzisina kukwanauchishandisa kamera yekurenda — mari yese yakachengetwa pakugadzirisa patsva uye mari yewarandi yakabhadhara mari yekurenda muzuva rimwe chete.

Tafura iri pazasi inoratidza kuenzanisa kwemitengo yekurenda nekutenga kiyi chaiyo Zvishandiso zvekuongorora SPD.

Maitiro Ekuongorora SPD Nhanho Nenhanho (DC neAC)

Kana kuti zve Masisitimu ezuva eDCkana Mapaneru ekudzora mota dzeAC, maitiro ekuyedza Zvishandiso Zvinodzivirira Kukwira (SPDs)zvinotevera pfungwa imwe chete — miganhu yemagetsi chete ndiyo inosiyana.

Pa Nzvimbo yekuyedza yeWenzhou SPD, ndinoisa a maitiro ekuedza nhanho nhanhoinoshandiswa nevatengi vekunze kwenyika mu Germany, US, nePakistankuti uone kuvimbika kweSPD usati watumirwa.

1.DC SPDsvanoedzwa pa Kudzivirira kuputira kwe600 V, panguva iyo

2.UYE SPDsvanoedzwa pa 277 V mutsetse wemagetsi.

Vose vanogamuchira 6 kV surge impulse (8/20 µs waveform)uye zvinofanira chibatiso chiri pasi pe1 kVpanguva yechiitiko ichi.

Bvunzo rega rega rinodzokororwa pa L–N, L–PEuye N–PEnzira dzekuona kuti kudzivirirwa kwakazara pasi pemamiriro ezvinhu chaiwo ekuvhuvhuta.

Danho 1 - Kuongorora nekutarisa torque

Zvese Kuedzwa kweSPDinotanga ne kuongorora kwekuona uye kutarisa torque yekupedzisira— danho riri nyore, asi ndiro rinowanzo shaikwa mumunda.

Ndinotanga nekutarisa kuti dzimba dzakatsemuka, mavanga ekutsva, kana kuti materminal asina kusimbaizvo zvinogona kukonzera zvikanganiso zve arc. Ipapo ini torque yega yega screw kusvika 0.8 Nmuchishandisa mutyairi akagadziriswa.

Pane imwe nguva, panguva yekuongorora zvinhu zvisati zvatumirwa, ndakawana tambo imwe chete yemhangurayakada kuchekwa pasi pesikuruu yekubikisa. Ingadai yakaita yakapwanyika pakuputika kwemheni kwekutanga, ichiuraya dunhu rekudzivirira pakarepo.

Kubva ipapo, ndakagadzira kutarisa kwekuona uye torquechikamu chinosungirwa chega chega Mushumo wekuyedza mhando yeSPDtinotumira kune vatengi vari mu Europe neUS

Danho rechipiri - Kudzivirira kupisa

Danho rinotevera rakakosha mu Kuongororwa kweSPDndizvo here kuyerwa kwekudzivirira kuputiraKushandisa a 1 kV inosanganiswa, Ndinoyera kuramba pakati mutsetse (L) uye ivhu rinodzivirira (PE).

Chikamu chimwe nechimwe chinofanira kuchengetedza >10 MΩKuverenga kuri pasi pemuganhu uyu kunoratidza kubuda kwevaristor kwekutanga, zvichikanganisa dziviriro yekukwira kwemvura. Chero SPD iri kuratidza iri kurambwa pakarepo— hapana zvinosaririra.

Zviri nyore izvi bvunzo yemeggerinodzivirira zvikanganiso zvakavanzika zvinogona kukonzera ma inverter ezuva kana mota dzemaindasitirikukundikana panguva yechiitiko chekukwira kweropa.

Danho rechitatu - Dziviriro yeVoltage

Iyo Kuedzwa kweVoltage Protection Level (VPR)zvakakosha kuti uve nechokwadi chekuti SPD inosunga over-voltage inomhanya zvakachengetekaKushandisa a jenareta yekuwedzera yakaiswa pa3 kA, 8/20 µs, Ndinoyera voltage yekubatanidza ne oscilloscope.

Kune 600 V DC SPD, iyo VPR inofanira kuramba iri pasi pe900 VMuchikamu chedu chekupedzisira, VPR yakayerwa yaive 820 V, zvichiratidza kuti mayuniti ese akapasa ongororo.

Danho iri rinovimbisa kuti SPD ichadzivirira ma inverters ezuva anonzwa uye michina yeindasitiripanguva yezviitiko zvekuwedzera kwenyika chaiyo, kudzivirira nguva inodhura yekurega basa.

Danho rechina - Kubuda kwemvura paUc

Kuedzwa Kwekubuda Kwemvura Pari Zvinoinovimbisa kuti yako SPD inoramba yakachengeteka pasi pemagetsi anoenderera mberiNdinokwidza voltage yeDC kusvika 600Vuye kuyera kubuda kwemvura.

Zvichienderana nezvinodiwa zvedu, simba rekubuda kwemvura rinofanira kugara pasi pe1 mAChero chikamu chinodarika muganho uyu—senge kuverenga kumwe chete 1.2 mA—inowanzoita kupisa zvakanyanya uye kutadza kushanda zvakanaka kana tembiricha yakakwiraMaSPD akadaro ndeekuti kuraswa, haambofi akaderedzwa.

Bvunzo iyi inovimbisa dziviriro yakavimbika yema solar panels nemidziyo yeindasitiri, kudzivirira kutadza kunogona kukonzera kuti pave nenguva inodhura yekuzorora.

Danho rechishanu - Chiratidzo chekuguma kwehupenyu

Kuongorora Chiratidzo Chekuguma Kwehupenyuzvakakosha kuti tive nechokwadi chekuti Dziviriro yeSPD iri kushanda.

Ndinopfupisa varistor kwemasekonzi mashanu, wobva waisunungura. mureza wechiratidzo unofanira kutsvuka, kana kuti LED inofanira kudzima.

A chiratidzo chekunamira kana kusashanda zvakanakainogona kutsausa vashandisi kuti vafunge kuti SPD ichiri kushanda. Chero chipi zvacho chine zvichiri kuratidza girinimushure mekunge bvunzo yapera kurambwa pakarepo.

Zvakajairika bvunzo dzekuguma kwehupenyuinodzivirira kukundikana kwakavanzika, kudzivirira ma solar panels ako kana maindasitiri kubva mukukuvadzwa kusingatarisirwi.

 Maitiro Ekuona SPD Yakakundikana

Kunyangwe SPD inoratidzika kunge "inoshanda" inogona kukundikana chinyararire. Kana yaongororwa, zvakasara zvemarashazvinogona kuoneka apo varistor akambogara, zvichiratidza kukuvara kwemukati.

Tsvaga zviratidzo zvitatu zvikuru zvekukundikana:

1.Ruvara rwechiratidzo- kana ikaratidza chiratidzo chenhema chekuti "chine hutano", SPD inokanganiswa.

2.Nzvimbo dzinopisa zvikuru- chero nzvimbo iri pamusoro 70 °Cinyevero.

3.Kubuda kwemvura kwakawandisa- kuverenga pamusoro apa 1 mAzvinoratidza kukundikana.

Chero chimwe chezviratidzo izviinosimbisa kuti SPD iri hazvichapi dziviriro yekuputika kwemvurauye zvinofanira kuva yakatsiviwa ipapo ipapo.

 Nei Zviratidzo zveSPD Zvichigona Kutsausa

Mazhinji maSPD anoshandisa mireza yemakanikasezviratidzo zvekuguma kwehupenyu. Mireza iyi inogumburwa chete kana kuwedzera kwesimba kunodarika 250 A, zvinoreva zviitiko zvinononoka zve overvoltagezvinogona kukuvadza varistor pasina kukonzera chiratidzo.

Kuti uwane kuongororwa kwakarurama, vimba ne kamera yekupisakuona nzvimbo dzinopisa. Muboka remaSPD 480 rapfuura, Zvikamu gumi nezvivirizvakaratidzwa Nzvimbo dzinopisa dzine tembiricha inosvika 80°C, asi chete Vatatu vakagumburwa nemireza.

Chidzidzo:Usavimba nechiratidzo chete—kuongorora kupisa uye kuongorora kubuda kwemvurazvakakosha pakuchengetedza.

Megger vs. Oscilloscope: Kunzwisisa Mhedzisiro yeKuyedza kweSPD

Pakuyedza maSPD, a meggerzviyero kudzivirira kuputira, ukuwo oscilloscopezviratidzo kushanda kwemagetsi ekubatanidza.

Mune rimwe batch, chikamu chinoratidzwa 15 MΩpamegger asi yakabatirira pa 1.4 kV, kupfuura zvakatarwa ne 400VKuverenga kwacho kwaiita sekunge kwakanaka, asi oscilloscope yakaratidza njodzi chaiyo.

Chinhu chikuru chaunofanira kuziva:Gara uchibatanidza bvunzo dzekudzivirira nekutarisa magetsi ekubatanidzakuti uve nechokwadi chekuti SPD yakavimbika. Kana mudziyo ukakundikana, gadzirisa dambudziko racho nekukasika—dzimwe nguva kugadziriswa kweresipi yevaristorchinodiwa.

Zvikanganiso zveSPD zveKuongororwa uye Maitiro Ekudzivisa

Kuedza maSPD zvisirizvo kunogona kukuvadza mudziyo wako nemidziyo yako. Heano mamwe acho. zvikanganiso zvina zvakajairika:

1.Kusabvisa SPD- Gara uchiparadzanisa mudziyo kubva mudunhu kuti usaonekwe zvisirizvo kana kuti urege kupiswa nemoto.

2.Kushandisa voltage isiriyo yekuyedza– Tarisa zvinodiwa zveAC kana DC SPDs usati waedza.

3.Kuedza zvikamu zvinotonhora- Rega SPD isvike 25 °Ckuve nechokwadi chekuti insulation yacho yakanyatsojeka uye kuti mvura inobuda zvakanaka.

4.Kuregeredza kureba kwetambo uye mhedzisiro ye lead- Wedzera 1 m inotungamirakuverengera kwako kuti uverengere kuwedzera kwe resistance kana inductance.

Nekutevera matanho aya ekudzivirira, unodzivirira SPD yako, zvishandiso zvako zvekuyedza, uye unodzivirira kukundikana kunodhura kwemunda.

 Chikanganiso 1 - Kuedza SPDs Uchinge Wakabatana neCircuit

Chimwe chezvikanganiso zvakajairika ndechekuti kuyedza SPD ichiri muchikamu chemhenyuMumapaneru apo ivhu rinogovana mitoro, chinhu chinogona kuverenga 2 MΩkubva kumawinding emota panzvimbo peSPD pachayo, zvichikonzera mhedzisiro yekupasa/kukundikana kwenhema.

Maitiro akarurama:Nguva dzose vhura chinopwanya wobva wabvisa SPD zvachoseusati waedza. Shandisa a tag kana kuti chiratidzo chekunyeverakudzivirira kubatanazve netsaona panguva yekuedzwa.

 Chikanganiso 2 - Kusvetuka Kunyorova Tembiricha Yekuyedza SPD

Kupisa kunokanganisa zvakanyanya kuverenga kweSPD kubuda kwemvura.Varistor yakaedzwa pa 5 °Canogona kuratidza Kubuda kwemvura kwakakwira ne20%kupfuura patembiricha yemumba, zvingangokonzera kukundikana kwenhemakana kuti zvikanganiso zvakakanganisika.

Maitiro akanakisa:Shandisa kamuri rinodzorwa netembirichayakagadzirirwa ku 25 °C ±2 °Cuye nyika SPDs kwemaawa maviriusati waedza. Danho iri riri nyore yakaderedza mwero wekudzoka kweSPD yedu ne35%uye inoita kuti pave nemhedzisiro chaiyo.

 Chikanganiso 3 - Kuregeredza Kutungamirwa Kwemutobvu Mumiedzo yeSPD

Matepi ebvunzo refu anounza inductance, kazhinji 1 µH pamita imwe neimwe, izvo zvinogona wedzera kusvika ku20 V pakukwira kwe8/20 µs.

Maitiro akanakisa:Nguva dzose gadzirisa hurongwa hwako hwekuyera nemidziyo chaiyo yekuyedzauchashandisa, nyora chero voltage offsetuye bvisa kubva pakuverenga kwekupedzisiraIzvi zvinovimbisa kuyerwa kwemazinga ekudzivirira voltage akarurama (VPR)kune SPD yega yega.

Nguva Yokutsiva SPD Yako Mushure meKuedzwa

Kuziva nguva yekutsiva mudziyo wekudzivirira kukwira (SPD)Zvakakosha kudzivirira nguva yekuzorora inodhura.

Tsiva SPD nekukasikakana paine parameter inodonha kupfuura 10% kubva pakuyera kwayo kwekutangaZviratidzo zvikuru zvinosanganisira:

1.Kubuda kwemvura >1 mA

2.Dziviriro yemagetsi (VPR) inokwira >10%

3.Tembiricha yeSPD inodarika 70 °C

Nguva dzose nyora zuva rekutsivauye dzorera SPD yekare kufekitoriyekuongorora kutadza. Izvi zvinovimbisa kuti kudzora mhandouye zvinobatsira kudzivirira matambudziko anodzokororwa mukushandiswa kwezuva kana mumaindasitiri.

Ndinofanira kutara zuva rekarenda here?

Zvechokwadi. Kunyangwe MaSPD anotaridzika zvakanaka anogona kuora nekufamba kwenguvaKuchengetedza kuvimbika dziviriro yekuputika kwemvura, tinokurudzira:

1.Mapurazi ezuva:purogiramu yekutsiva nguva imwe neimwe makore mashanu

2.Mapaneru emota emaindasitiri:purogiramu yekutsiva nguva imwe neimwe makore matatu

SPD yega yega inowana Chisiti cheQR-codedkuratidza zuva rinotevera rekupedzisira. Vatengi vanogona skena kuti utevere purogiramu dzekutsiva, kuve nechokwadi chekuti kuchinjana kuri kuitwa nenguva uye kudzivirira kukundikana kusingatarisirwi. Funga nezvazvo senzira yekuchinjana zvinhu nenguva. Chiyeuchidzo che "kuchinja mafuta" chemidziyo yako yekudzivirira kukwira kwemvura.

 Ndingagadzirisa Varistor kana SPD here pachinzvimbo chekuitsiva?

Kugadzirisa varistor kana SPD hakukurudzirwi.Varistor yakagadzirwa nesimbi yakanyunguduka; kana tsanga dzayo dzanyunguduka kubva pakukwira kwemvura, inova resistor inogara iripo uye haichakwanisi kuchengetedza system yako. Kuedza kushandisazve dzimba kana maSPD ekare kazhinji inodhura kupfuura yuniti itsva.

Kuti tirambe tichienderera mberi, tinopa 5% chikwereti cheSPD cores dzakadzoserwa, uye isu kudzokorodza zinc oxidezvine mutoro, zvichiona kuti zvinobatsira zvakatipoteredza nehupfumi.

Mhedziso

Kuongororwa nguva dzose uye kuongororwa kweSPDs yakoZvakakosha kudzivirira kukuvara kwemidziyo inodhura. kuramba kuputira, dziviriro yemagetsi, uye kubuda kwemvurayeyuniti yega yega, uye kutsiva maSPD anoratidza chero zviratidzo zvekukundikanazvisati zvakanganisa mashandiro ezuva kana maindasitiri.

Zve michina yekudzivirira surge yakaedzwa kare (SPDs) inotumirwa zvakananga kubva kufekitori yedu yeWenzhou kuenda kuGermany kana kuUS, taura nesu pa Van@leikexing.comTinovimbisa kuti SPDs dzemhando yepamusoro, dzakaedzwa nefekitoriyagadzirira kuiswa vhiki rinouya.