TVSS (Transient Voltage Surge Suppressor)
TVSS (Lub Hloov Voltage Surge Suppressor) thiab SPD (Tshaj Protective Device), ob qho tib si xa mus rau cov cuab yeej uas tiv thaiv qhov hluav taws xob tsawg-tsawg hluav taws xob los ntawm kev puas tsuaj ntawm cov neeg tawg rog, ntsaws qhov muag los yog surges (hluav taws xob khiav tawm ntawm qhov hluav taws xob).
Lub sij hawm TVSS zoo dua hauv UL cov teb chaws xws li Tebchaws Meskas, Canada thiab qee lub tebchaws hauv Middle thiab South America losis Philippines.
TVSS vs TVS, lawv puas yog tib yam?
Nco ntsoov tias tsis txhob sib xyaw cov sij hawm TVSS nrog TVs. TVS yog lub npe luv rau tus nqi hluavtaws xob ntawm lub tshuab hluav taws xob. Los ntawm lawv lub npe, lawv zoo li tib yam nkaus. Tiam sis kev tiv thaiv kev lag luam, TVS yog ib qho hluav taws xob ua ke (diode) uas ua rau lub hom phiaj ntawm kev tiv thaiv kev tua. Nws yog ib qho 3 sab saum toj tshaj plaws tiv thaiv kev tiv thaiv Cheebtsam (lwm 2 yog MOV thiab GDT). Zoo li MOV thiab GDT, TVS siv tau los ua TVSS thiab qhov tseeb nws yeej siv cov lus qhia nrog MOV thiab GDT. GDT tuaj yeem ua haujlwm loj heev thiab tsis muaj zog tam sim no nws teb qeeb qeeb thaum TVS tuaj yeem kov tau txoj kev yoojyim me me tam sim no nws teb tau sai dua GDT thiab MOV thiab yog 3 daim ntawv ua kom muaj kev tiv thaiv zoo.
Vim li cas cov SPD tuam txhab tsis piav txog lawv cov khoom li TVSS?
TVSS cov cuab yeej siv tau yeej ib txwm mus rau tsev neeg loj tshaj plaws ntawm kev tua hluav taws li hu ua SPDs (Surge Protective Devices). Pib nrog UL 1449 3rd Tsab Ntawv thiab xyoo 2008 Cov Hluav Taws Xob Hluav Taws Xob, lo lus “SPD” tau hloov cov lus “TVSS” (Cov Hloov Hluav Taws Xob Rau Kev Kub Ntxhov) thiab “Secondary Surge Arrester” SPDs tam sim no tau muab cais ua hom 1, Hom 2, Hom 3 lossis Hom 4 thiab raug xaiv raws li daim ntawv thov thiab qhov chaw uas lawv yuav siv. Nrog rau cov kev hloov pauv ntawm cov lus siv tam sim no los ntawm UL thiab NEC, tsis muaj ib lub koomhaum cov qauv siv uas tau siv cov haujlwm TVSS, li IEEE®, IEC® thiab NEMA™ tau siv lub sij hawm "SPD" rau ntau xyoo.
Qhov no yog ib qho yooj yim version ntawm cov evolution ntawm TVSS rau SPD. Txawm yog technically, TVSS thiab SPD tsis sib hloov. Lub npe hu ua TVs tam sim no yog ib hom 2 SPD raws li nyob rau hauv qhov qub version UL txuj ci, TVSS yog ntsia rau ntawm sab nrauv ntawm qhov kev pab cuam nkag. Tsis tau SPD tuaj yeem tsim kho nyob rau sab nraub lossis sab phom.
Txawm li cas los xij, rau cov neeg tau txais kev pab, koj tau siv TVSS thiab SPD raws li qhov qub thiab tsis quav ntsej qhov kev pab me me.
TVSS yog Surge Suppressor los yog ntiav Protector nyob rau hauv daim ntawv ntawm lub hwj chim sawb?
Qhov tshij, muaj ntau ntawm cov hlua hluav taws xob los yog cov khoom muaj nrog thaiv kev tiv thaiv kev ua haujlwm ntawm kev ua lag luam. Nquag feem ntau peb hu rau hom khoom ntawm cov khoom siv surge tiv thaiv lossis surge tiv thaiv thiab ib qho ntawm lawv qhov ntsuas loj yog qhov ntsuas joules. Txawm li ntawd los cov kev tiv thaiv qog no lossis cov tiv thaiv kom tsis txhob muaj hluav taws xob tsis zoo rau TVSS.
Koj tuaj yeem xav txog TVSS ua khoom loj hauv tsev neeg thiab ntog tus suppressor los yog surge protector yog ib feem ntawm nws. Teebmeem, peb hu rau cov neeg ua haujlwm tsis txaus siab no lossis hu ua surge protector type 3 TVS lossis qhov chaw siv TVIS raws li lawv tau siv los ntawm cov khoom tiv thaiv thiab ua tus tiv thaiv kawg rau kev tiv thaiv kev tiv thaiv. Hom 1 los yog hom 2 TVSS feem ntau yog hauv daim ntawv ntawm lub thawv los yog vaj huam sib luag, qee zaum kuj yuav loj heev. Nws qhov loj parameter tsis yog Joules kev ntsuam xyuas, tiam sis cia siab tau. Hom 1 / 2 / 3 TVSS cov ntaub ntawv ua ib qho 3 cov txheej pov tawm kev tiv thaiv mechanism.
Yuav ua li cas TVSS (qhov hluav taws xob voltage surge suppressor) ua hauj lwm?
Cov ntsiab lus uas tiv thaiv kev tiv thaiv ntaus (SPD) thiab cov hluav taws xob qis hluav taws xob suppressor (TVSS) yog siv los piav qhia cov khoom siv hluav taws xob xws li hauv cov fais fab kev lag luam, cov txheej txheem tiv thaiv kab ke, kev sib txuas lus, thiab lwm lub tshuab fais fab loj, rau kev tiv thaiv hluav taws xob thiab cov cua, Qee qhov kev lag luam ntawm cov cuab yeej siv no feem ntau tau muab tso rau hauv qhov chaw nkag ntawm qhov chaw nkag hluav taws xob, los tiv thaiv cov khoom siv hauv tsev los ntawm cov kev phom sij zoo sib xws.
Dab tsi tsis nyob ruaj khov rau hauv lub sij hawm ntev voltage surge suppressor?
Yog tias koj saib cov lus txhais, txhais tau tias ntev kawg rau lub sijhawm luv luvCov. Lossis yog koj saib Wikipedia, nws yuav qhia koj: Qhov kev hloov pauv hloov pauv yog lub sijhawm luv luv ntawm lub zog hauv lub cev uas tshwm sim los ntawm lub xeev hloov.
Tsis tau nyob hauv kev tua hluav taws, tshuav ntev npaum li cas? Yog hais tias qhov kev siv nyiaj overvoltage kawg rau, piv txwv li, 5 cov vib nas this, nws puas yog ib qho? Tsis tseeb tsis. Nyob rau hauv kev tiv thaiv hluav taws xob, kev tshee muaj tshwm sim nyob rau hauv microsecond (1 / 1000 thib ob) los yog txawm millisecond (1 / 1000000 thib ob). Yog li tam sim no koj twb paub lawm tias ceev npaum licas tuaj yeem mus cia.
Thiab qhov no coj mus rau lwm lub ntsiab lus: dab tsi yog ib qho kev siv nyiaj ntev tshaj ntev dua qhov kev khiav hauj lwm thiab yuav ua li cas thiaj ua rau lub siab muag (los yog kev tiv thaiv kev tiv thaiv) qhov teeb meem no?
Ntawd qhov siab tshaj yog qhov peb hu ua overvoltage ib ntus (TOV). Ib ntus luv nqi tsis yog ib yam dab tsi uas ua rau muaj kev nqhis dej suppressor. Tiag tiag, cia siab rau tus suppressor yog tus neeg raug mob ib ntus overvoltage. Tsav, muaj zog raws li nws muaj peev xwm, tsuas yog xeem rau microseconds los yog milliseconds thiab yog li nws tsuas yog hloov ib tug tsawg npaum li cas ntawm lub zog mus rau surge suppressor. Tiam sis TOV, thaum nws lub sijhawm ntev npaum li cas, nws ua rau muaj kev cuam tshuam rau cov txawb suppressors uas yog feem ntau raws li cov hlau oxide varistor (MOV) thiab yog li MOV hauv lub txos suppressor yog kub thiab nws thiaj li tau haus luam yeeb thiab ntes hluav taws.
Yog li no, ib lub voj voog ruaj khov yog qhov tseem ceeb rau cov khoom siv hluav taws xob xws li kev nqes dej suppressor. Teb zoo! Lus hauv no teb OK, koj tej zaum xav: kuv nyob hauv ib cheeb tsam uas lub hwjchim grid yog ib qhov mess. Hauv qhov no, TVSS tsis siv rau hauv? Lub European surge suppression manufacturers muaj peb tus piv txwv zoo heev. Txog 20 lub xyoo dhau los, cov European surge suppressor tuam txhab uas muag pib xa tawm kev tiv thaiv kev tiv thaiv rau Suav teb tau ntau ntawm cov SPDs, uas ua haujlwm zoo kawg nkaus nyob rau hauv Teb chaws Europe, yog burnt nyob rau hauv daim ntawv sau npe. Ib qho tseem ceeb vim tias Tebchaws Europe muaj lub voj voog ruaj khov heev thiab yog li SPD lub lag luam tsim lub tshuab hluav taws xob suppressors nrog Uc / MCOV (nruam voltage / siab nrawm tshaj ntawm qhov muaj zog) ntawm 255V. Tsis tau 20 xyoo dhau los nyob rau hauv Suav teb, lub hwjchim loj yog nyob ntawm qhov zoo tagnrho thiab qhov kev hloov ua haujlwm tsis muaj zog heev. Qhov teeb meem no daws tau tom qab cov SPD cov tuam txhab tau txais kev siab dua UC / MCOV.
Yog li, ntev li ntev tau koj xaiv TVSS nrog ib tus Uc / MCOV dua, nws yuav tsum siv cov TVSS hauv cov cheeb tsam muaj qhov hloov voltage. Piv txwv li, thaum peb xa peb cov suppressor siab mus rau Is Nrias teb, peb nquag txais yuav UC / MCOV ntawm 320V lossis 385V.
Ntau hom TVSS (Lub Hloov Voltage Surge Suppressor)
Nws txhais li cas los ntawm hom 1 / 2 / 3 TVSS? Nyob hauv UL 1449 txuj, lub hom ntawm TVSS tsuas yog txiav txim siab los ntawm nws qhov chaw nyob.
Ntaus 1 TVSS, tab sis feem ntau yog nruab rau ntawm txoj kab ntawm qhov kev pab cuam nkag, muaj feem xyuam nyob rau hauv txhua qhov chaw hauv lub zog hluav taws xob.
Ntaus 2 TVSS yog ntsia rau ntawm qhov chaw ua haujlwm ntawm qhov kev pab cuam (qhov no yog, ceg vaj huam sib luag) thaum hom 3 TVSS (feem ntau lub hwj huam strips, pob tw los yog cov plugs) muaj nyob ze ntawm kev tiv thaiv kab hlau.
Ntawm no yog ib qho kev qhia txog hom TVSS raws li qhov chaw nruab ntiag.
Tau qhov twg los ntawm nemasurge.org
Ntawm no yog qee cov duab ntawm hom 1 / 2 / 3 lub caij ntes hluav taws xob ntog suppressor (TVSS) hauv UL txuj.
Hom 1 TVSS: Thawj Kab Kev Tiv Thaiv
Ntsib sab nraum lub tsev ntawm kev nkag mus
Ntaus 2 TVSS: Ob Kab Kev Tiv Thaiv
Ntsig hauv lub tuam tsev ntawm ceg vaj huam sib luag
Ntaus 3 TVSS: Kawg Kab Ntsig
Nquag hu rau Tshaj Tawm Sawm thiab Tshaj Tawm rau ib sab ntawm cov khoom tiv thaiv
Tau kawg, yog tias peb xav kawm ntxiv, qhov sib txawv ntawm ntau hom TVSS ntau dua li nws qhov chaw nyob. Sau ob peb:
- Hom 2 TVSS yuav tsum tau tiv thaiv lwm tus tiv thaiv (CB los yog Fuse) los yog nws yuav muab tso rau hauv TVSS. Hom 1 TVSS feem ntau yog tiv thaiv kev tiv thaiv hauv SPD los yog lwm txoj hau kev los ua kom tiav cov kev cai ntawm tus qauv; Yog li, 1 SPDs thiab Hom 2 SPDs uas tsis tas yuav tsum tau tiv thaiv cov khoom tiv thaiv sab nrauv uas tshem tawm cov peev xwm kev txhim kho ib qho kev ntsuas (tsis raug cai) tiv thaiv kev tiv thaiv nrog SPD.
- Nominal Poob Tam sim no (Hauv) kev ntawm Hom 1 TVSS yuav yog 10 kA lossis 20 kA; yog, 2 TVSS tej zaum yuav muaj 3kA, 5 kA, 10 kA lossis 20 kA Nominal Discharge Tam sim no.
Tab sis rau cov tsis yog tus kws tshaj lij, nws yog txaus kom paub qhov txawv ntawm cov hom no los ntawm cov chaw. Ntawm no peb muaj ib cov yeeb yaj kiab uas nthuav tawm los ntawm Jeff Cox uas yuav muab kev nkag siab zoo rau koj.
TVSS / Transient Voltage Surge Suppressor
Prosurge muaj tag nrho series ntawm TVSS cov cuab yeej raws li ANSI / UL 1449 4th tsab thiab EN / IEC61643-1 / 11
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