Tshaj Tawm Kev Tiv Thaiv
Muaj cov khoom tiv thaiv zoo (los yog sau ua SPD) tsis yog cov khoom lag luam uas paub rau cov pej xeem. Cov pej xeem paub txog lub hwj chim zoo yog qhov teeb meem loj hauv peb lub zej zog uas cov khoom siv hluav taws xob lossis hluav taws xob tau siv ntau thiab ntau dua. Lawv paub txog UPS uas tuaj yeem muab cov hluav taws xob tsis zoo uas tsis txaus ntseeg. Lawv paub txog voltage stabilizer uas, raws li nws lub npe hais, ntsuas lossis tswj qhov ntsuas hluav taws xob. Tsis tau cov neeg feem coob, txaus siab rau kev nyab xeeb uas tiv thaiv kev tiv thaiv nqa khoom, txawm tias tsis paub tias nws muaj sia.
Peb tau qhia txij li menyuam yaus tuaj yeem ntsaws tag nrho cov khoom siv hluav taws xob thaum nag xob nag cua txwv tsis pub xob laim xob laim tam sim no yuav mus ncig sab hauv lub tsev thiab ua kom cov khoom hluav taws xob puas.
Zoo, xob laim yog kev txaus ntshai heev thiab tsim kev puas tsuaj. Nov yog qee cov duab uas qhia txog kev puas tsuaj.
Qhia txog qhov kev nthuav qhia no
Zoo, qhov no yog hais txog kev xob laim. Tshooj li cas txog kev tiv thaiv kev tiv thaiv yam khoom? Nyob rau hauv tsab xov xwm no, peb yuav muab ib qho kev nthuav qhia meej hauv nqe lus no. Peb tab tom yuav ua kom paub:
Xob Tiv Thaiv Kev Vam Tiv thaiv thiab Kev Tiv Thaiv Kev Tiv Thaiv: Muaj feem xyuam txawv
Tshaj tawm
- Dab tsi yog surge
- Dab tsi ua rau kom ntog
- Qhov teebmeem ntawm kev tsuj
Tsav Tiv Thaiv Tiv Thaiv (SPD)
- Lus txhais
- muaj nuj nqi
- daim ntawv sau npe
- Cheebtsam: GDT, MOV, TVS
- Classification
- Cov Ntsiab Lus Tseem Ceeb
- installation
- Standards
Introduction
Cov ntawv sau no xav tias cov nyeem tsis muaj kev paub txog keeb kwm yav dhau los hauv kev tiv thaiv kev kub ntxhov. Qee cov ntsiab lus yooj yim vim xav tau yooj yim. Peb tau sim hloov cov lus qhia kev rau hauv peb cov lus txhua hnub tsis tau nyob rau tib lub sijhawm, nws yog kev tsis pom dhau los peb yuav plam qee qhov raug.
Thiab hauv qhov kev nthuav qhia no, peb yauv txais qee cov khoom siv tiv thaiv kev tiv thaiv uas tso tawm los ntawm ntau lub teeb liab / txheej tiv thaiv cov tuam txhab uas peb tau txais los ntawm pej xeem. Ntawm no peb ua tsaug rau lawv rau lawv txoj kev rau siab qhia hauv zej tsoom. Yog tias cov khoom tsis sib haum, thov hu rau peb.
Lwm qhov tseem ceeb tshaj plaws yog hais tias kev tiv thaiv xob laim thiab tiv thaiv kev kub nyhiab yog tseem tsis tau muaj txuj ci tseeb. Piv txwv li, peb paub tias xob laim nyiam ntaus lub siab thiab taw cov khoom. Vim li ntawd peb thiaj siv hluav taws xob xob laim kom nyiam xob laim thiab txiav nws tam sim no mus rau hauv av. Tsis tau qhov no yog kev nyiam ua raws, qhov tsis yog txoj cai. Feem ntau, xob laim ntaus lwm yam khoom txawm hais tias muaj lub siab thiab taw qhia hluav taws xob nyob ze. Piv txwv li, ESE (Thaum Ntxov Huab Cua Kev Ntxov Ntxub) yog suav hais tias yog kev hloov kho tshiab ntawm xob laim qws thiab yog li yuav tsum muaj kev ua tau zoo dua. Tsis tau, nws yog ib qho kev sib cav uas cov kws tshaj lij ntseeg thiab pom zoo tias nws tsis muaj qhov zoo dua li tus pas nrig xob laim yooj yim. Xws li hauv kev tiv thaiv kev kub ntxhov, qhov kev daws teeb meem tseem loj dua. IEC tus qauv, uas yog qhov tseem ceeb tau npaj tseg thiab tsim qauv los ntawm cov kws tshaj lij nyob sab Europe, txhais qhov nthwv dej ntawm cov hluav taws xob ncaj qha li 10/350 imps ua rau lub zog uas UL txuj, feem ntau yog kev thov thiab tsim qauv los ntawm cov kws tshaj lij Asmeskas, tsis lees paub txog cov qauv nthwv dej no.
Los ntawm peb qhov kev xav, peb txoj kev nkag siab ntawm cov hluav taws xob yuav ua kom ntau thiab meej dua thiab thaum kawg raws li peb tshawb fawb ntau dua ntawm daim teb no. Piv txwv li, tag nrho cov khoom lag luam tiv thaiv surge tam sim no yog tsim raws li qhov kev xav tias xob laim tam sim no yog ib qho yoj ib puag ncig. Tsis tau qee qhov SPD uas tuaj yeem hla txhua qhov kev ntsuas hauv chav kuaj tseem ua tsis tiav ntawm daim teb thaum twg xob laim. Yog li xyoo tsis ntev los no, ntau thiab ntau cov kws tshaj lij ntseeg hais tias xob laim tam sim no yog ntau lub suab nrawm impulse. Qhov no yog kev nce qib thiab muaj tseeb yuav txhim kho cov kev ua haujlwm ntawm kev tiv thaiv qoj ib ce uas tsim los ntawm qhov ntawd.
Tseem nyob hauv tsab xov xwm no, peb yuav los tshawb rau hauv cov ncauj lus tsis sib haum. Peb sim muab qhov yooj yim tseem ceeb, kev qhia paub txhua yam ntawm kev tiv thaiv kev tiv thaiv thiab kev tiv thaiv kom zoo nyob ib leeg. Yog li, cia peb pib.
1. Xob Tiv Thaiv thiab VS Pov Tseg
Koj tuaj yeem nug seb yog vim li cas peb thiaj li yuav tsum paub txog kev tiv thaiv xob taws thaum peb tham txog kev tiv thaiv kev tiv thaiv. Zoo, ob lub ntsiab lus no muaj feem xyuam nrog ntau cov duab uas tau tshwm sim los ntawm hluav taws xob. Peb tham ntau ntxiv txog qhov ua kom muaj feem xyuam nyob rau hauv tshooj ntxiv. Qee qhov theories ntseeg tau tias kev tiv thaiv kev tiv thaiv yog ib feem ntawm kev tiv thaiv xob taws. Cov kev xav tiv thaiv no yuav tsum tau muab faib ua ob sab: kev tiv thaiv sab nraud uas tiv thaiv nws cov khoom siv hluav taws xob (cua davhlau ya davhlau), tus neeg tsav tsheb thiab cov khoom siv hluav taws xob thiab kev tiv thaiv hluav taws xob nrog nws cov khoom loj tshaj plaws, los yog rau cov ntaub ntawv / teeb liab.
Ib tus neeg txhawb zog ntawm qhov kev cais no yog ABB. Nyob rau hauv qhov yees duab no, ABB (Furse yog ib lub tuam txhab ABB) muab kev nthuav qhia zoo heev ntawm kev tiv thaiv xob taws hauv lawv cov kev xav. Rau kev tiv thaiv xob taws ntawm lub tsev tsis zoo, yuav tsum muaj kev tiv thaiv thaiv kom tsis txhob muaj teeb meem tam sim no mus rau hauv av thiab kev tiv thaiv sab nraud kom tiv thaiv tau hluav taws xob thiab cov ntaub ntawv / teeb liab ntawm kev puas tsuaj. Thiab hauv daim yeeb yaj kiab, ABB ntseeg hais tias cua dav hlau / cov neeg sib tw / cov khoom siv khoom siv yog cov khoom tsim rau kev siv hluav taws xob thiab kev tiv thaiv kev tiv thaiv kom txhob muaj kev tiv thaiv ntawm kev sib tw khiav ceev (nyob ze ze).
Lwm txoj kev tshawb xav ua kom muaj hluav taws xob tiv thaiv tsis pub dhau ntawm kev tiv thaiv sab nraud. Ib qho laj thawj uas ua rau kev sib txawv yog tias qhov kev faib tawm qub yuav ua rau cov pej xeem xav tias qhov kev poob siab yog los ntawm xob laim uas tsis yog qhov tseeb. Raws li kev txheeb cais, tsuas yog 20% kev qis qis yog los ntawm xob laim thiab 80% kev nce nqi yog tshwm sim los ntawm qhov hauv tsev. Koj tuaj yeem pom tau hais tias nyob rau hauv qhov kev tiv thaiv kev siv hluav taws xob, nws tsis muaj ib yam dab tsi txog kev tiv thaiv kev tiv thaiv.
Kev tiv thaiv xob laim yog ib qho nyuaj uas muaj ntau yam khoom sib txawv. Kev tiv thaiv kab mob tsuas yog ib qho ntawm ib qho kev tiv thaiv hluav taws xob tswj. Rau cov neeg tau txais kev pab, nws tsis yog qhov yuav tsum tau khawb rau hauv txoj kev kawm sib tham. Tom qab tag nrho, zoo li peb hais tias, kev tiv thaiv xob taws tseem tsis yog kev tshawb fawb. Yog li ntawd rau peb, qhov no yuav tsis yog 100% pom tau yooj yim tshaj kom nkag siab siv hluav taws xob tiv thaiv thiab nws txoj kev sib raug zoo nrog kev tiv thaiv kev tiv thaiv.
Xob Tiv Thaiv
Kev tiv thaiv sab nraud
- Cua Terminal
- neeg xyuas pib
- Pob Zeb
- Sab Nraud Shielding
Sab Nruab Nrab Kev Tiv Thaiv
- Internal Shielding
- Equipotential Bonding
- Tshaj Tawm Kev Tiv Thaiv
Ua ntej peb ua tiav qhov kev sib kho no, peb tab tom yuav ua kom paub txog lub tswv yim dhau los: hluav taws xob ntom nti. Yeej nws txhais tau hais tias ntau zaus thaum muaj hluav taws xob tawg yog nyob hauv ib cheeb tsam. Ntawm sab xis yog lub zog ntom ntom ntom nti ntawm lub ntiaj teb.
Vim li cas kev ntom nti mob hnyav yog qhov tseem ceeb?
- Los ntawm kev muag khoom thiab kev ua lag luam, cheeb tsam uas muaj kev sib tw ceev nrooj muaj kev xav tau rau kev sib tw thiab kev tiv thaiv kev tiv thaiv.
- Los ntawm kev taw qhia, SPD ntsia rau saum lub teeb tsa kev kub ceev yuav tsum muaj zog loj txaus tam sim no. Ib 50kA SPD yuav muaj peev xwm ua tau lub neej nyob 5 hauv teb chaws Europe tab sis tsuas yog muaj sia nyob 1 xyoo hauv Philippines.
Prosurge cov lag luam tseem ceeb yog North America, South America thiab Asia. Raws li peb tuaj yeem pom hauv daim duab qhia no, cov kev lag luam tag nrho yog cov kev poob qis hauv cheeb tsam lub teeb hluav taws xob siab. Qhov no yog ib qho pov thawj muaj zog tias peb qhov kev tiv thaiv kev tiv thaiv no yog kev hwm zoo thiab yog li muaj peev xwm nyob tau hauv cov cheeb tsam nrog cov cwj nrag feem ntau heev. Nyem thiab kos ib co ntawm peb kev tiv thaiv kev tiv thaiv kev dag zog thoob plaws ntiaj teb.
2. surge
Zoo, peb yuav mus tham ntxiv txog surges hauv kev sib kho no. Txawm hais tias peb siv lub sij hawm muaj ntau zaus nyob rau hauv kev sib kho dhau los, tsis tau peb tsis tau muab nws cov lus txhais tau raug. Thiab muaj ntau qhov tsis to taub txog cov lus no.
Dab tsi yog Surge?
Nov yog qee cov lus qhia tseem ceeb txog kev hloov.
- Tawm, Transient, Spike: Ib qho momentary nce hauv tam sim no los yog qhov hluav taws xob hauv hluav taws xob.
- Nws tshwm sim hauv millisecond (1 / 1000) lossis txawm microsecond (1 / 1000000).
- Kev poob siab tsis yog TOV (Kev Tiv Thaiv Ib Ntus).
- Kev poob siab yog qhov ua rau kev puas tsuaj thiab kev puas tsuaj. 31% kev siv hluav taws xob puas tsuaj los yog raug mob vim muaj kev tsis txaus siab. (los ntawm ABB)
Surge VS Tshaj Lawm
Qee tus neeg xav tias qhov kev dhau mus yog overvoltage. Zoo li daim duab saum toj no qhia, thaum lub qhov hluav taws xob qhov hluav taws xob, muaj kev tawm mus. Zoo, qhov no yog kev nkag siab tseem tsis tau raug, txawm hais lus yuam kev heev. Surge yog ib hom overvoltage tsis tau overvoltage tsis yoog. Tam sim no peb paub hais tias kev nce siab tshwm sim hauv millisecond (1/1000) lossis txawm tias microsecond (1/1000000). Txawm li cas los xij, overvoltage tuaj yeem siv sijhawm ntev dua, vib nas this, feeb txawm teev! Muaj ib lub sij hawm hu ua ib ntus overvoltage (TOV) kom piav txog lub sij hawm ntev overvoltage.
Qhov tseeb, tsis yog tsuas yog kev txhawb nqa thiab TOV tsis yog qhov qub, TOV kuj yog qhov khoom loj rau cov khoom tiv thaiv phais. Ib MOV raws SPD tuaj yeem txo qis nws qhov kev cuam tshuam rau yuav luag xoom thaum lub zog tshwm sim. Txawm li ntawm hluav taws xob txuas mus tas li, nws hlawv tau sai thiab yog li qhov txaus ntshai kev phom sij. Peb mam li tham ntxiv txog qhov no hauv kev sib kho tom qab thaum peb qhia cov khoom thaiv kev tiv thaiv zoo.
| Temporary Overvoltage (TOV) | Tshaj tawm | |
| Ua rau los ntawm | LV / HV-system kev ua yuam kev | xob laim los sis hloov overvoltage |
| Duration | ntev millisecond mus rau ob peb feeb lossis sijhawm | luv luv Microseconds (xob laim) los yog millisecond (switching) |
| MOV xwm txheej | Thermal khiav tawm | Kev rov qab kho yus tus kheej |
Dab Tsi Ua Ntug Lawm?
Cov no yog qee hom lees paub ua rau kev cia siab:
- Xob Laim Ywj Siab ntawm Ib Cov Qub Hluav Taws Xob
- Xob Hluav Taws Xob Hluav Taws Xob
- Electromagnetic Induction
- Hloov Cov Haujlwm (ntau npaum li cas tsis tau qis zog)
Peb tuaj yeem pom tias qee cov muaj xob laim thiab ib txhia tsis yog. Ntawm no yog ib qho piv txwv ntawm xob laim muaj feem xyuam.
Tseem nco ntsoov nco ntsoov tias tsis yog txhua tus surges yog los ntawm xob laim ces nws tsis yog thunderstorm tias koj cov khoom yuav raug rhuav tshem.
Cov Teebmeem Kev Txawj Tawm
Kev tuaj yeem tuaj yeem nqa ntau qhov kev puas tsuaj thiab raws li kev txheeb cais, kev siv hluav taws xob tau ua rau cov tuam txhab Asmeskas tshaj $ 80 nphom / xyoo. Txawm li cas los xij thaum peb ntsuas qhov cuam tshuam ntawm kev cia siab, peb tsis tuaj yeem txwv peb tus kheej ntawm kev pom tsuas yog pom. Tiag tiag, kev mob siab mus pov hwm 4 yam sib txawv:
- kev puas tsuaj
- Degradation: Gradual deterioration ntawm sab hauv Circuitry. Cov khoom siv tsis raug ua ntej. Nquag tshwm sim los ntawm kev tsis tshua qis qis, nws tsis tua cov khoom nyob rau hauv ib lub sij hawm tab sis tshaj tawm nws ua puas nws.
- Kev ncua sij hawm: poob ntawm productivity los yog cov ntaub ntawv tseem ceeb
- Kev Ruaj Ntseg Tseg
Ntawm sab xis yog ib daim video uas ntog tiv thaiv cov tub txawg ua kev sim kom paub tseeb tias kev tiv thaiv kabmob thaiv tau tiag tiag yuav tiv thaiv tau cov khoom hluav taws xob ntawm kev puas tsuaj. Koj tuaj yeem pom tau tias thaum lub DIN Rail rail tshem tawm, lub tshuab kas fes tawg thaum tsoo los ntawm kev tshee los ntawm lub chaw kuaj ntshav.
Daim vis dis aus no yog zaj txaus ntshai heev. Txawm li cas los xij, qee qhov xwm txheej ntawm kev puas tsuaj yog tsis pom thiab zoo nkauj ntau heev nws tseem ua tus nqi peb kim, piv txwv li, lub downtime nws coj. Duab lub tuam txhab muaj kev downtime rau ib hnub, yuav tau them li cas rau qhov ntawd?
Tsav tsis tsuas nqa khoom ntiag tug, tab sis kuj coj tus kheej txoj kev ruaj ntseg.
Qhov teeb meem loj tshaj plaws nyob rau hauv Suav teb cov ntaub ntawv qhia txog tsheb ceev ceev yog los ntawm xob laim thiab ntog. Ntau tshaj 200 casualties.
Suav ntaj thiab kev lag luam pib ua rau 1989 tom qab muaj kev sib tsoo hluav taws kub ntawm kev sib tsoo ntawm qhov chaw tso roj rau ntawm kev sib tw ntaus. Thiab nws tseem ua rau muaj kev puas tsuaj ntau.
3. Tsav Tiv Thaiv Kev Tiv Thaiv / Tiv Thaiv Cov Tiv Thaiv
Nrog kev paub txog kev tiv thaiv hluav taws xob / kev tiv thaiv thiab kev pom zoo nyob rau hauv kev sib ntsib yav dhau los, peb tab tom kawm kom paub ntau ntxiv txog kev tiv thaiv kev tiv thaiv. Tsuas yog, nws yuav tsum hu ua Surge Protective Device raws li tag nrho cov ntawv pov thawj thiab ntaub ntawv. Tsis tau muaj coob tus neeg, txawm tias muaj kev tiv thaiv kev tiv thaiv teb zoo li siv lub sij hawm nta tiv thaiv ntaus ntawv. Tej zaum vim nws suab ntau dua li cov lus txhua hnub.
Yeej koj tuaj yeem pom ob hom kev tiv thaiv kev tiv thaiv ntawm lub khw xws li hauv qab cov duab yeeb yam. Nco ntsoov tias cov duab tsis yog nyob rau ntawm cov khoom sib thooj. Vaj Huam Sib Luag pawg SPD yog feem ntau loj dua loj tshaj DIN-roob SPD.
Vaj Huam Sib Luag Muaj Kev Tiv Thaiv Kev Tiv Thaiv
Nrov hauv UL Standard Market
DIN-rail Tsav Tiv Thaiv Kev Tiv Thaiv
Nrov hauv IEC Standard Market
Yog li dab tsi tiag yog kev tiv thaiv qoj ib ce? Raws li nws lub npe hais, nws yog khoom siv uas tiv thaiv kev tiv thaiv. Tab sis li cas? Nws puas muaj kev tshem tawm txoj kev hnyav? Cia wb mus saib qhov haujlwm ntawm cov khoom tiv thaiv kev tiv thaiv hnyav (SPD). Peb tuaj yeem hais tias SPD siv los hloov hluav taws xob ntau dhau thiab tam sim no muaj kev nyab xeeb rau hauv av ua ntej nws mus txog cov khoom tiv thaiv. Peb tuaj yeem siv cov thev naus laus zis tiv thaiv cov khoom hauv chav kuaj kom pom nws txoj haujlwm.
Tsis muaj kev tiv thaiv kabmob
Voltage mus txog 4967V thiab yuav ua rau kev tiv thaiv cov khoom tiv thaiv
Nrog kev tiv thaiv kabmob
Voltage tsuas yog siv rau 352V
SPD ua hauj lwm li cas?
SPD yog qhov muaj teeb meem. Nws kuj ua haujlwm txo kom tsawg li qhov nce siab. Koj tuaj yeem xav tias SPD yog lub qhov rooj thiab ntog li dej nyab. Nyob hauv qee qhov xwm txheej, lub qhov rooj npog yog kaw, tab sis thaum pom pom muaj hluav taws xob tuaj, lub qhov rooj qhib sai sai thiaj li yuav tsum tau khiav mus. Nws yuav cia li pib dua rau qhov muaj impedance tus xwm txheej tom qab lub hnub xaus.
SPD yuav siv sij hawm ntev kom cov khoom tiv thaiv thiaj muaj sia nyob tau. Sij hawm dhau los, SPD yuav tuaj mus xaus rau lub neej vim muaj ntau tus tuaj yeem mob siab. Nws fij nws tus kheej kom cov khoom tiv thaiv tau nyob tau.
Qhov txoj hmoo zaum kawg rau SPD yog yuav tsum fij.
Tiv Thaiv Kev Tiv Thaiv Tshooj
Hauv kev qhia no, peb yuav los tham txog SPD cov cheebtsam. Yeej, muaj 4 qhov loj hauv SPD: cov sib tawg, MOV, GDT thiab TVS. Cov khoom sib txawv no muaj cov yam ntxwv sib txawv tsis tau lawv txhua tus ua haujlwm zoo: nkag siab txog cov xwm txheej ib txwm, lawv qhov kev tawm tsam yog loj heev uas tsis muaj tam sim no tuaj yeem ua raws li kev poob siab tam sim no lawv tsis kam tam sim ntawd poob mus rau xoom yuav tsum tau ua kom lub caij tam sim no hla mus rau hauv av tsis txhob ntws mus rau hauv cov tiv thaiv hauv qab thiav cuab yeej siv. Yog vim li cas peb thiaj hu cov khoom sib xyaw 4 yam tsis-hom. Txawm li cas los lawv tsis muaj qhov sib txawv thiab peb tuaj yeem sau lwm tsab xov xwm los tham txog lawv qhov sib txawv. Tab sis tam sim no, txhua yam peb yuav tsum paub yog tias lawv txhua tus ua tib txoj haujlwm: kom hloov mus rau kev hloov mus rau hauv av tam sim no.
Cia wb mus saib ntawm cov tiv thaiv kab ke no.
Hlau Oxide Varistor (MOV)
Feem ntau ntawm SPD Cheeb Tsam
Roj Twj Raj (GDT)
Yuav Siv Hauv Hybrid nrog MOV
Txais Surge Suppressor (TVS)
Nrov nyob rau hauv Cov Ntaub Ntawv / Teeb Meem SPD Vim nws Tus Me Nyuam Me
Hlau Oxide Varistor (MOV) thiab nws cov Evolution
MOV yog feem ntau SPD tivthaiv thiab yog li peb yuav tham ntxiv txog nws. Thawj qhov yuav tsum nco ntsoov yog tias MOV tsis yog qhov zoo meej.
Feem ntau ntawm cov zinc oxide uas ua thaum nws muaj kev kub ntxhov ntau tshaj qhov ntsuam xyuas, MOVs muaj lub neej tsis haum neej thiab degraded thaum raug rau ob peb loj surges lossis ntau me dua surges, thiab yuav kawg ntawm lub hauv paus tsim lub xaus ntawm lub neej scenario. Qhov kev mob no yuav ua rau lub chaw tawg mus ncig los yog qhov txuas txuas rau. Cov neeg laus loj tuaj yeem ua rau cov khoom qhib thiab yog li ua kom muaj kev sib ntaus sib tua ntxiv rau cov khoom tiv thaiv. MOV feem ntau yog siv los ua kom tsis muaj zog txaus siab nyob hauv AC power circuits.
Hauv kev yees duab ABB, lawv muab ib qho kev qhia meej txog seb MOV ua haujlwm li cas.
SPD tuam txhab ua ntau txoj kev tshawb fawb txog kev nyab xeeb ntawm SPD thiab ntau txoj haujlwm zoo li no los daws qhov teeb meem kev nyab xeeb ntawm MOV. MOV tau hloov zuj zus thaum lub 2 lub xyoo dhau los. Tam sim no peb tau hloov kho dua MOV xws li TMOV (feem ntau yog ib tug MOV nrog lub qhov fuse) los yog TPMOV (thermally protected MOV) uas ua kom nws muaj kev nyab xeeb. Ua raws li, yog ib qho ntawm TPMOV ua lag luam, tau pab peb cov kev siv zog mus rau MOV zoo dua.
Prosurge SMTMOV thiab PTMOV yog ob qhov kho hloov tshiab ntawm ib txwm MOV. Lawv yog cov ua tsis dhau-kev nyab xeeb thiab kev tiv thaiv tus kheej tau txais los ntawm SPD cov chaw tsim khoom loj los tsim lawv cov khoom thaiv kev tiv thaiv.
25kA TPMOV
50kA / 75kA TPMOV
Tshaj Tawm Kev Tiv Thaiv Kev Kuaj Mob
Feem ntau hais lus, muaj ob qho kev ntsuas loj: IEC tus qauv thiab UL txuj. UL txuj yog siv rau hauv North America thiab qee qhov chaw hauv South America thiab Philippines. Kom meej meej IEC tus qauv yog ntau dua nyob thoob ntiaj teb. Txawm tias tus qauv Suav GB 18802 yog qiv ntawm IEC 61643-11 txuj.
Vim li cas peb tsis tuaj yeem muaj tus qauv thoob ntiaj teb? Zoo, ib qho ntawm cov lus piav qhia yog tias cov kws tshaj lij nyob sab Europe thiab Asmeskas cov kws tshaj lij muaj cov kev xav sib txawv ntawm kev nkag siab ntawm xob laim thiab mob siab.
Kev tiv thaiv kom tsis taus yog ib qho tseem ceeb hloov. Piv txwv li, yav dhau los tsis muaj cov txheej txheem IEC hauv SPD siv rau hauv daim ntawv thov DC / PV. Qhov ntau ntawm IEC 61643-11 yog rau AC zog mov nkaus xwb. Tsis tau tam sim no peb tau txais daim tshiab IEC 61643-31 txuj rau SPD siv rau hauv daim ntawv thov DC / PV.
IEC ua lag luam
IEC 61643-11 (AC Fais Fab)
IEC 61643-32 (DC fais fab tuag)
IEC 61643-21 (Cov Ntaub Ntawv & Lub Teeb Liab)
EN 50539-11 = IEC 61643-32
UL Kev Ua Lag Luam
UL 1449 4th Edition (Ob leeg AC thiab DC Fais Fab)
UL 497B (Cov Ntaub Ntawv & Lub Teeb Liab)
Tshem Tawm Txheem Ntaus Kev Nruab Nrab
Zoo, qhov no yog qhov kev sib tham yooj yim tshaj plaws los sau txog vim peb qhov kev xav tau yog tias koj tuaj yeem mus rau Youtube vim hais tias muaj ntau ntau cov yeeb yaj duab txog kev txhim kho SPD, los yog DIN Rail rail los yog ib pawg SPD. Tau kawg, koj tuaj yeem tshawb xyuas peb cov duab duab kom paub ntxiv. Nco tseg tias lub installation ntawm kev tiv thaiv kev tiv thaiv yuav tsum tau ua los ntawm tus kws kho mob tsim nyog / muaj ntawv tso cai.
Tshaj Tawm Kev Tiv Thaiv Ntaus Ntawv
Nws muaj ntau txoj hau kev los tawm tsam kev tiv thaiv kom txhob muaj kabmob.
- Kev Nruab Nruab Nrab: DIN Rail Railway SPD VS Panel SPD
- Los ntawm Standard: IEC Standard VS UL Txuj Ci
- Los ntawm AC / DC: AC Power SPD VS DC Power Power SPD
- Ntawm Qhov Chaw: Hom 1 / 2 / 3 SPD
Peb mam qhia cov ntsiab lus ntawm kev faib tawm ntawm UL 1449 tus qauv. Yeej, hauv UL txheem hom SPD yog txiav txim siab los ntawm nws qhov chaw teeb tsa. Yog tias koj xav paub ntxiv, peb xav kom koj nyeem kab lus no luam tawm los ntawm NEMA.
Tsis tas li ntawd peb pom ib tug Youtube yees duab los ntawm Jeff Cox uas muab kev qhia meej meej txog ntau hom kev tiv thaiv kev tiv thaiv.
Nov yog qee qhov duab ntawm hom 1 / 2 / 3 tiv thaiv kev tiv thaiv ntaus ntawv hauv UL txuj.
Hom 1 Surge Protection Device: Thawj Kab Kev Tiv Thaiv
Ntsib sab nraum lub tsev ntawm kev nkag mus
Hom 2 Surge Protection Device: Ob Kab Kab Ntsig
Ntsig hauv lub tuam tsev ntawm ceg vaj huam sib luag
Hom 3 Surge Protection Dais: Kawg Cov Kab Ntsig
Nquag hu rau Tshaj Tawm Sawm thiab Tshaj Tawm rau ib sab ntawm cov khoom tiv thaiv
Ceeb toom tias IEC 61643-11 tus qauv kuj lees txais cov ntsiab lus zoo xws li hom 1 / 2 / 3 SPD los yog IIS II / III SPD. Cov ntsiab lus no, txawm txawv ntawm cov ntsiab lus hauv UL txuj, sib koom zoo ib yam. Hom kawm I SPD yuav pib siv zog tshaj plaws uas yog qhov tseem ceeb tshaj plaws thiab cov Class II thiab Class III SPDs tuav lub zog tshuav nyiaj ntxiv uas twb tau ua lawm. Ua ke, cov cuab yeej tiv thaiv tshooj I / II / III tsis tas li los ua cov kev tiv thaiv ntau qhov kev tiv thaiv uas muaj feem xyuam rau qhov zoo tshaj plaws.
Daim duab ntawm sab xis qhia tau tias SPD ntawm txhua theem ntawm kev teeb tsa hauv IEC tus qauv.
Peb mam li hais me ntsis txog ib qho sib txawv ntawm hom 1/2/3 hauv UL txuj thiab IEC tus qauv. Hauv IEC tus qauv, muaj lub sij hawm hu ua xob laim impulse tam sim no thiab nws cov cim yog Iimp. Nws yog qhov simulation ntawm lub siab ntawm ncaj qha ntawm lub teeb ncaj qha thiab nws lub zog yog hauv txoj hauv kev nrawm ntawm 10/350. Hom 1 SPD hauv IEC tus qauv yuav tsum qhia nws cov Iimp thiab SPD cov tuam txhab ib txwm siv cov kis sib txawv tshuab rau hom 1 SPD raws li cov kis sib txawv tshuab pub rau Iimp siab dua li MOV thev naus laus zis hauv qhov loj me ib yam. Tsis tau lub sij hawm Iimp tsis raug lees paub los ntawm UL txuj.
Kuj tseem ceeb yog qhov tseem ceeb ntawm SPD hauv IEC tus qauv yog feem ntau DIN-rail mounted tsis tau SPD hauv UL txuj ci yog cov uas muaj zog los yog qhov chaw nyob nruab nrab. Lawv saib txawv. Nov yog qee cov duab ntawm IEC txheem SPD.
Hom 1 / Chav Kawm I SPD
Thawj Kab Kev Tiv Thaiv
Hom 2 / Class II SPD
Ob Kab Ntawm Cov Kws Ua Haujlwm
Hom 3 / Class III SPD
Lub Kab Tsav Xwm Kawg
Raws li rau lwm cov ntawv qhia, peb yuav piav ntau zog ntxiv rau lwm cov khoom raws li nws yuav ua tau ntev heev. Txoj cai tam sim no, txhua yam koj yuav tsum paub yog SPD tau muab cais ua ob hom hauv UL thiab IEC cov qauv.
Cov Ntsiab Tseem Ceeb ntawm Kev Tiv Thaiv Kev Tiv Thaiv
Yog tias koj saib cov cuab yeej tiv thaiv kev kub ntxhov, koj yuav pom ntau yam ntawm nws txoj kev kos, piv txwv li, MCOV, Hauv, Imax, VPR, SCCR. Lawv txhais li cas thiab vim li cas nws tseem ceeb? Zoo, hauv kev sib kho no, peb tab tom tham txog nws.
Nominal Voltage (Un)
Nom tswv txhais tau tias 'npe'. Yog li ib lub nominal voltage yog qhov 'npe' voltage. Piv txwv li, cov nominal voltage ntawm cov khoom xa hluav taws xob hauv ntau lub teb chaws yog 220 V. Tab sis nws cov nqi tiag tiag raug tso cai sib txawv ntawm qhov sib txawv nqaim.
Qhov Siab Tshaj Ua Haujlwm Ntau Tshaj Tawm (MCOV / Uc)
Qhov siab tshaj plaws ntawm qhov voltage tus ntaus ntawv yuav tso cai kom dhau los ntawm kev tsis tu ncua. MCOV yog feem ntau 1.1-1.2 lub sijhawm siab dua Un. Tab sis nyob rau thaj chaw uas tsis muaj zog tsis muaj zog, qhov hluav taws xob yuav nce siab heev thiab yog li yuav tsum xaiv MCOV SPPS dua. Rau 220V Un, Cov tebchaws nyob sab Europe tau xaiv 250V MCOV SPD, tab sis nyob rau qee muag kev lag luam xws li Is Nrias teb, peb pom zoo MCOV 320V lossis 385V. Daim ntawv ceeb toom: Qhov muaj zog saum MCOV yog hu ua Temporary Overvoltage (TOV). Ntau tshaj 90% ntawm SPD hlawv vim yog TOV.
Voltage Protection Rating (VPR) / Let-through Voltage
Nws yog cov nqi hluav taws xob ntau tshaj plaws uas SPD yuav cia dhau mus rau cov khoom tiv thaiv thiab ntawm chav kawm nws yog qhov tsawg dua qhov zoo. Piv txwv li, cov cuab yeej tiv thaiv tuaj yeem tiv thaiv qhov siab tshaj plaws 800V. Yog tias SPD's VRP yog 1000V, cov cuab yeej tiv thaiv yuav raug puas ntsoog lossis hloov kho.
Txawj Tawm Tsam Tam Sim No
Nws yog qhov siab tshaj plaws ntawm kev cia siab tam sim no ib qho SPD tuaj yeem shunt hauv av thaum qhov xwm txheej qoj ib ce thiab yog qhov ntsuas ntawm lub neej ncua ntawm SPD. Piv txwv li, 200kA SPD muaj lub neej ntev dua li 100kA SPD nyob rau hauv tib qho xwm txheej.
Lub Nom Nta Ntaus Nim No (Hauv)
Nws yog qhov tseem ceeb ntawm qhov kev tiv thaiv tam sim no los ntawm SPD. SPD xav kom muaj kev haumxeeb tom qab 15 Nyob rau hauv kev ua haujlwm. Nws yog qhov taw qhia ntawm lub zog ntawm SPD thiab nws yog ntsuas seb lub SPD ua tau zoo li cas thaum uas tau teeb tsa thiab raug rau kev khiav hauj lwm saib xyuas kom ze rau qhov teeb meem ntawm lub neej.
Tshaj Tawm Npe Tshaj Tawm (Imax)
Nws yog qhov tseem ceeb ntawm qhov kev tiv thaiv tam sim no los ntawm SPD. SPD yuav tsum ua haujlwm nyob tom qab 1 Imax surges. Feem ntau, nws yog 2-2.5 lub sijhawm ntawm tus nqi ntawm In. Nws tseem yog qhov taw qhia ntawm lub zog ntawm SPD. Tab sis nws yog ib qho tseem ceeb ntawm parameter dua hauv Vim tias Imax yog ib qho kev xeem huab thiab qhov teeb meem tiag tiag, feem ntau yuav tsis muaj zog li ntawd. Rau no parameter, lub siab dua qhov zoo dua.
Luv Circuit Court Lub Neej Tom Ntej (SCCR)
Nws yog theem siab tshaj plaws ntawm luv luv tam sim no hais tias ib feem los yog lub rooj sib haum muaj peev xwm tiv thaiv thiab siab dua qhov zoo dua. Prosecutory qhov loj tshaj SPDs xeem 200kA SCCR cov kev xeem ntawm UL tus qauv tsis muaj sab nraud hluav taws xob thiab fuse uas yog kev ua haujlwm zoo tshaj plaws hauv kev lag luam.
Tshaj Tawm Tsav Siv Tiv Thaiv
Cov kev tiv thaiv kabmob tsis txaus siv yog siv rau ntau yam lag luam, tshwj xeeb tshaj yog rau cov tseem ceeb ntawm lub luag haujlwm. Hauv qab no yog daim ntawv teev cov kev tiv thaiv kom txhob muaj kev tiv thaiv thiab cov kev daws teeb meem uas npaj kom ua. Hauv txhua daim ntaub ntawv, peb qhia tau tias SPD yuav tsum muaj thiab qhov chaw ua kom zoo. Yog tias koj xav tau ib daim ntawv teev npe, koj tuaj yeem nyem thiab kawm ntxiv.
tsev
Hnub ci zog / PV System
LED Street Lub teeb
Roj & Roj Chaw Nres Tsheb
Telecom
LED zaub
Industrial Control
CCTV System
Tsheb Them Nqi Zog
Cua Turbine
Railway System
Ntsiab lus
Thaum kawg, peb tuaj mus rau qhov kawg ntawm tshooj no. Nyob rau hauv tsab xov xwm no, peb tham txog qee yam khoom zoo li kev tiv thaiv hluav taws xob, tiv thaiv kev tiv thaiv, ntws thiab tiv thaiv kev tiv thaiv. Kuv cia siab tias koj twb to taub txog cov kev qhia txog kev tiv thaiv kabmob. Tab sis yog tias koj xav kawm ntxiv txog cov ntawv no, peb muaj lwm cov xwm txheej ntawm peb txoj kev tiv thaiv kev tiv thaiv ntawm peb lub vev xaib.
Thiab lub xeem tsis tau tseem ceeb tshaj plaws ib feem ntawm qhov tsab xov xwm no yog los muab peb cov ua tsaug rau cov tuam txhab uas uas tsim ib tug ntau ntawm cov yeeb yaj duab, duab, cov khoom thiab tag nrho cov hom ntawm cov khoom nyob rau hauv qhov kev kawm ntawm surge tiv thaiv. Lawv yog cov thawjcoj hauv peb txoj haujlwm. Tshaj tawm los ntawm lawv, peb pab txhawb peb sib koom ua ke.
Yog tias koj nyiam qhov no, koj tuaj yeem pab qhia nws!