EX D lossis EX E: Puas tsim nyog rau koj?
"Txoj kev tiv thaiv twg tsim nyog rau peb lub lag luam?" yog ib qho ntawm cov lus nug uas peb tau txais los ntawm cov neeg siv khoom. Thiab qhov ntawd yog cov lus nug raug cai. Txhawm rau kom muaj kev nyab xeeb ntawm koj cov neeg ua haujlwm, koj cov ntaub ntawv pov thawj tawg yuav tsum haum nrog ib puag ncig uas nws tau raug teeb tsa.
Txawm li cas los xij, yuav ua li cas koj tuaj yeem xaiv lub thawv uas zoo tshaj plaws rau koj lub koom haum thaum muaj ntau yam kev tiv thaiv muaj, txhua yam uas raug kho rau ib qho chaw txaus ntshai? Hauv tsab xov xwm no, peb yuav sib piv ob lub tswv yim tiv thaiv nrov (Ex d thiab Ex e) yog li koj tuaj yeem txiav txim siab seb qhov twg yog qhov zoo tshaj plaws rau koj lub tuam txhab.
Ex d thiab Ex e enclosures: lawv yog dab tsi?
Cia peb pib los ntawm kev txhais cov ntaub ntawv pov thawj tawg muaj xws li. Nws yog qhov yooj yim rau kev xav tias cov cuab yeej tiv thaiv no tiv taus cov khoom tawg sab nraud raws li kev coj ua naming. Qhov no tsis muaj tseeb, txawm li cas los xij. Lub peev xwm ntawm cov khoom siv kom muaj kev tawg los yog lub txim uas tshwm sim hauv lub thawv yog hu ua "explosion-proof".
Cov ntaub ntawv pov thawj tawg yog tsim los kom muaj qhov tawg lossis lub txim uas tshwm sim hauv qhov chaw kaw kom tiv thaiv ib puag ncig ib puag ncig. Txhawm rau tiv thaiv hluav taws los ntawm kev khiav tawm ntawm lub tawb, cov khoom siv yuav tsum muaj peev xwm tiv taus qhov kub thiab txias heev. Cov ntaub thaiv no yog li ua raws li kev tiv thaiv kev nyab xeeb los ntawm kev ua kom txhua qhov hluav taws xob ua los ntawm cov tshuab ua haujlwm tsis zoo los ntawm kev khiav tawm thiab ua rau cov khoom siv hluav taws xob nyob ze ntawm qhov chaw uas muaj kev phom sij.
Cia peb tshuaj xyuas ob hom ntawv nrov tshaj plaws ntawm cov ntaub ntawv pov thawj tawg, raws li tau hais los ntawm IEC (International Electrotechnical Commission) tus qauv, uas yog Ex d thiab Ex e enclosures, tam sim no peb tau txiav txim siab dab tsi yog qhov tawg-pov thawj enclosures.
Ex d enclosures yog ua kom ruaj ntseg kaw ob qho tib si tawg thiab lub siab nws tsim. Lawv txwv tsis pub hluav taws los yog sparks los ntawm erupting ntawm lub tawb thiab mus rau qhov chaw tawg. Containment yog qhov tseem ceeb tshaj kev tiv thaiv.
Ex e enclosures yog tsim los ntawm kev tsom mus rau kev nyab xeeb dua. Yog li ntawd, cov ntaub thaiv npog yuav tsum muaj peev xwm tiv taus qhov kub thiab txias sab hauv thiab sab nrauv nrog rau qhov ci ntsa iab. Tsis tas li ntawd, lawv tau ua kom khiav txias, uas tshem tawm qhov ua tau ntawm arcs, sparks, thiab hotspots. Ex e enclosures, piv rau Ex d enclosures, hais txog kev tiv thaiv saum kev kaw.
Ex d thiab Ex e enclosure teeb thiab tu
Txhawm rau kom muaj qhov tawg thiab lub siab uas mus nrog nws, ib qho khoom tawg-pov thawj yuav tsum yog tuab dua. Ex d enclosures feem ntau loj, tuab, thiab hnyav dua Ex e enclosures vim li ntawd. Ex e enclosures yooj yim dua rau nruab thiab tswj txij li lawv qis dua hauv qhov hnyav thiab muaj cov qauv tsim ntau dua.
Ex e enclosures kuj tsis muaj cov nplaim taws, uas ua rau kev saib xyuas yooj yim dua. Ex d enclosures yuav tsum muaj cov nplaim taws hauv lawv cov qauv tsim vim tias lawv tau tsim los kaw qhov tawg. Cov nplaim taws no yog qhov tseem ceeb rau kev tua hluav taws ua ntej lawv yuav kis mus rau thaj tsam ib puag ncig.
Qhov nyuaj ntawm kev tuav ib qho Ex d enclosure yog nyob rau hauv qhov ntau ntawm cov bolts (yuav tsum tau tswj kom muaj qhov sib txawv ntawm cov nplaim hluav taws) uas yuav tsum tau nruj rau qhov kev nruj nruj. Txhawm rau nkag mus rau cov khoom siv sab hauv rau kev saib xyuas kev ua haujlwm, tus kws tshaj lij yuav tsum tshem cov bolts no kom raug. Cov txheej txheem dhau los ua qhov nyuaj thiab siv sijhawm ntev vim li ntawd. Tus kws kho mob yuav tsum xyuas kom meej tias qhov sib txawv ntawm cov nplaim hluav taws raug khaws cia thaum muab cov vaj tsev rov qab ua ke thaum kho tiav. Daim ntawv pov thawj Ex yuav tsis muaj dab tsi yog tias qhov no tsis ua tiav.
Tsis tas li ntawd, nws yuav nyuaj rau nrhiav Ex d enclosures uas tau pom zoo rau IIC pawg roj. Ex d enclosures ua rau cov chaw uas muaj cov pa roj hauv IIC cov pa hluav taws xob tam sim no yuav tsum muaj cov nplaim taws me me vim tias lawv raug suav tias ua rau muaj kev phom sij loj. Yog li ntawd, nws yuav siv sij hawm ntau ua hauj lwm los tsim lawv. Txij li tsawg dua Ex d enclosures muaj rau cov ntawv thov IIC, cov uas feem ntau kim dua thiab nyuaj rau kev tswj xyuas. Ex e enclosures tsis muaj qhov teeb meem no vim lawv tsis muaj nplaim taws.
Feem ntau ntawm Ex d enclosures tsis tsim nyog rau kev teeb tsa hauv cov xwm txheej hauv qab no -20 degree C, uas yog ib qho kawg uas yuav tsum tau ua. Qhov no yog vim muaj kev hloov pauv hauv cov pa roj lossis vapour cov khoom ntawm qhov kub thiab txias. Ntawm qhov tod tes, Ex e enclosures yuav muaj qhov ntsuas kub ntau dua vim tias lawv tau ua kom tsis txhob muaj qhov hluav taws kub tshwm sim. Yog li ntawd, lawv tau yoog rau cov huab cua txias.
Peb cia siab tias cov ntaub ntawv peb tau muab tau pab koj txiav txim siab qhov chaw tawg-pov thawj yog qhov zoo tshaj plaws rau koj lub tuam txhab. Tsis muaj teeb meem dab tsi koj xaiv, thaum txhim kho qhov tawg-pov thawj enclosure, koj yuav tsum xyuam xim rau nws qhov siab tshaj plaws voltage.
Piv txwv li, ntawm Supermec, qhov siab tshaj plaws voltage rau peb Ex d thiab Ex e hlws ris thawv yog 1000V. Lawv yog li tsis tsim nyog rau ib qho kev hloov pauv uas muaj qhov ntsuas hluav taws xob siab dua 1000V. Kev ua haujlwm ntawm koj lub tuam txhab thiab kev nyab xeeb ntawm koj cov neeg ua haujlwm yuav raug teeb meem yog tias koj tsis ua raws li cov cai tswj kev nyab xeeb. Cov khoom specifications ntawm koj cov khoom tawg-pov thawj yuav tsum yog li ib txwm ua tib zoo nyeem.
Hu rau peb cov neeg ua haujlwm pabcuam muag khoom ntawm bwzm18@ledbenweilighting.comlos yog hu rau peb ntawmntxiv rau 86 18588981645yog tias koj xav tau kev pab txiav txim siab seb cov khoom siv hluav taws xob tawg puas yog qhov zoo tshaj rau koj lub tuam txhab. Peb yuav zoo siab los qhia koj ntxiv txog peb cov khoom tawg-pov thawj.
