Qhov pov thawj tawg txhais li cas?

Qhov pov thawj tawg txhais li cas?

Txhawm rau kom peb nkag siab lub ntsiab lus ntawm kab lus "kev pov thawj tawg," peb yuav tsum tshawb xyuas keeb kwm ntawm lub sij hawm nrog rau lub tuam txhab tsim nws. Xyoo 1897, National Fire Protection Association (NFPA) tau pib tshaj tawm qhov tam sim no hu ua National Electric Code (NEC®). Raws li qhov tshwm sim ntawm nws qhov kev suav nrog hauv lub cev ntawm NFPA cov cai, National Electrical Code® (NEC®) tseem hu ua NFPA 70 thiab ANSI / NFPA 70.

National Electrical Code® (NEC®) muaj cov lus txhais rau ntau yam sib txawv ntawm cov tswv yim tiv thaiv uas tau tso cai rau kev tsim cov khoom siv rau hauv qhov chaw muaj kev phom sij (kev cais tawm). Cov txheej txheem tiv thaiv no suav nrog cov pov thawj tawg, pov thawj plua plav pov thawj, plua plav nruj, purged/pressurized, intrinsically nyab xeeb, thiab hermetically kaw. Tsis tas li ntawd, NEC® kuj txhais cov plua plav nruj. Cov ntsiab lus no tsim cov qauv uas txhua yam khoom nruab rau hauv qhov chaw muaj kev phom sij lossis cais yuav tsum ua kom tau raws li kev ua haujlwm zoo.

Ib lub qhov rooj yuav tsum muaj peev xwm tiv thaiv tau cov pa taws los ntawm nws lub tsev los ntawm kev igniting vapors, gases, plua plav, los yog fibers nyob rau hauv cov huab cua nyob ib ncig ntawm nws nyob rau hauv thiaj li yuav ua tau raws li qhov yuav tsum tau rau ib tug tawg pov thawj ntsuam xyuas. Tsis tas li ntawd, nws yuav tsum muaj peev xwm txwv tsis pub muaj qhov tawg uas pib hauv nws lub tsev nyob rau hauv thiaj li yuav tiv thaiv kom tsis txhob muaj kev tawg tshwm sim hauv nws lub tsev. Thaum xa mus rau hluav taws xob enclosures, lo lus "explosion proof" tsis tau qhia tias lub enclosure muaj peev xwm tiv taus qhov tawg uas tshwm sim sab nraum lub thawv. Hloov chaw, nws yog lub peev xwm ntawm lub thawv ntim kom tsis txhob muaj qhov me me lossis tawg ntawm sab hauv los ntawm kev tsim kom muaj kev tawg ntau dua rau sab nraud.

Tsis tas li ntawd, NEC tau teev tseg tias txhua yam khoom siv uas yuav tsum tau teeb tsa yuav tsum ua tau raws li qhov ntsuas kub ntawm cov ntawv thov tshwj xeeb uas nws tau npaj. Qhov no qhia tau hais tias qhov kub ntawm lub cev muaj zog (thiab nws lub qhov rooj) lossis lwm yam khoom siv ua haujlwm tsis tuaj yeem siab dua qhov kub ntawm cov pa roj lossis plua plav hauv qhov chaw uas cov khoom yuav tsum tau nruab tuaj yeem hlawv lossis hlawv.

Ntawm daim ntawv teev npe ntawm txhua qhov khoom yog ib daim ntawv lo uas qhia txog cov kev faib tshwj xeeb uas cov khoom tau raug tshuaj xyuas, kuaj, thiab tau tso cai rau nruab.

Cov txheej txheem twg yog siv los ntsuas ntau yam kev tiv thaiv?

Tsuas yog cov xwm txheej tshwj xeeb uas tsim nyog rau kev siv ib qho ntawm cov kev tiv thaiv tau hais los saum no, raws li kev coj ua. Cheebtsam thiab cov khoom siv, piv txwv li, uas ua raws li cov plua plav nruj specification tau tso cai rau siv nyob rau hauv chav kawm II, Division 2, los yog Class III, Division 1 lossis 2 qhov chaw. Ntawm qhov tod tes, cov khoom thiab cov khoom siv uas tau teev tseg ua pov thawj tawg tau tso cai siv rau hauv Chav Kawm I, Division 1 lossis 2 qhov chaw.

Cov khoom lag luam uas tau teev tseg rau kev faib ntau dua feem ntau tshaj qhov yuav tsum tau ua rau cov kev faib qis dua uas lawv suav tias tsim nyog. Hauv qhov tseeb, NEC® tshwj xeeb tshaj tawm tias "Cov khoom siv uas tau txheeb xyuas rau lub Division 1 qhov chaw yuav tsum tso cai rau hauv Division 2 qhov chaw ntawm tib chav kawm, pab pawg, thiab chav ntsuas kub," yog li ua raws li cov qauv rau Lub Chaw Haujlwm. 2 thaj chaw [ANSI/NFPA 70:500.8(A)(2)].

Leej twg ua qhov kev ntsuam xyuas ntawm cov cuab yeej ua pov thawj tawg?

Cov cim yog siv los ntawm lub teb chaws lees paub cov chaw soj ntsuam xws li Underwriters Laboratories thiab Intertek los qhia tias cov khoom lawv tau sim sib haum rau cov qauv tsim los ntawm National Fire Protection Association (NFPA) thiab los ntawm lwm lub koom haum thoob ntiaj teb. Kev tshuaj xyuas cov qhab nia no, uas yuav suav nrog UL, CSA, ETL, thiab lwm yam, yog ib txoj hauv kev los tsim kom muaj cov khoom ua tau raws li cov qauv. Nws muaj peev xwm hais tias National Electrical Code (NEC) cov qauv tsis txaus siab los ntawm cov khoom uas tsis muaj cov cim no.

Ib daim qauv uas twb npaj txhij rau kev tsim khoom raug xa mus rau qhov chaw sim. Tom qab cov khoom tau tso cai, cov neeg soj ntsuam los ntawm qhov chaw kuaj ntawd yuav qee zaus mus ntsib cov chaw tsim khoom kom paub tseeb tias tsis yog cov khoom tsim los yog nws cov txheej txheem tsim khoom raug hloov pauv txhua txoj hauv kev.

BENWEI tau tsim los ua qhov tshwj xeeb.

Nyob rau hauv sib piv rau cov tshuab uas muab los ntawm HVAC modifiers, cov chav tsev uas tsim los ntawm BENWEI yog engineered kom ua tiav cov txheej txheem uas tau teev tseg hauv NEC®, los ntawm cov ntawv hlau mus rau cov kev xaiv ntawm compressors. Ntawm txhua qhov thiab txhua qhov system, BENWEI tsuas yog siv cov khoom siv thiab cov txheej txheem xaim uas tau raug kuaj xyuas kom zoo, sau npe, thiab ntawv pov thawj.

Scroll compressors uas yog hermetically kaw muaj nyob rau hauv txhua chav tsev.

Thaum xav tau, tag nrho ntim, kiv cua-txias (TEFC) lub cev muaj zog ntawm cov qauv zoo yog cais raws li Class I Div 1 lub luag haujlwm txaus ntshai.
Peb lub khw hluav taws xob tau txais kev pom zoo los ntawm UL 508A thiab tau tsim hluav taws xob tswj vaj huam sib luag.

compressors uas yog pov thawj tawg thiab tau txais kev pom zoo los ntawm CSA C/US thiab Teb Chaws Asmeskas Txais ntawm txhua tus thiab txhua qhov InPac® thiab AirPak chav tsev
Txhawm rau kom ua tau raws lossis dhau qhov yuav tsum tau ua ntawm NEC®, tag nrho cov xaim tau raug teeb tsa kom raug thiab sau npe.

Qee cov chaw ua haujlwm thiab cov chaw ua kom zoo nkauj xaiv los ua lawv cov haujlwm hauv cov xwm txheej txias dua. Cov cua sov feem ntau xav tau hauv cov ntawv thov no vim qhov ntsuas kub ib puag ncig feem ntau qis dua qhov xav tau. Txawm li cas los xij, vim muaj kev pheej hmoo ntawm kev tawg, cov txheej txheem qhib lub tshuab cua sov tsis tuaj yeem siv rau hauv qhov chaw muaj kev phom sij. Fin tube rhaub uas yog pov thawj tawg yuav tsum tau siv rau cov ntawv thov no.

Txhawm rau ua raws li cov kev cai thiab ua kom qhov kub thiab txias, cov khoom siv hluav taws xob tawg tau muaj cov cua sov hauv cov raj fin, thiab lawv muab cov hluav taws xob sib txuas. CSA C / US tau muab lawv qhov kev pom zoo rau cov khoom siv hluav taws xob tawg ua los ntawm BENWEI.

Tsis tas li ntawd, cov ntaub ntawv pov thawj tawg crankcase tau siv rau hauv cov xwm txheej no ntau dua li cov pa crankcase warmers.

Nyob ntawm BENWEI

Txij li xyoo 2010, BENWEI tau ua tus tsim khoom qub tshaj plaws thiab loj tshaj plaws hauv kev lag luam. Lub tuam txhab tshwj xeeb hauv kev tsim cov HVAC thiab cov khoom siv dag zog rau cov cheeb tsam uas muaj kev phom sij (qib cais). Vim tias peb tsim cov chav nyob, peb yuav muaj los teb cov lus nug uas koj tuaj yeem tau ua raws li kev teeb tsa.
 

12W Explosion Proof LED Dej nyab lub teeb

Feature:

● Teeb txuag 70 feem pua ​​ntawm lub zog

● Tsim kom muaj cua sov tsawg dua

● Txo cov nqi cua txias ntawm cov cua txias

● Kev saib xyuas tsawg dua

● Lub neej ua haujlwm ntev dua

● Tsim nyog siv rau hauv txoj kev, tunnels thiab lwm qhov chaw

Specification: