Dab tsi yog Kev Nyab Xeeb Kev Nyab Xeeb rau PTFE Cov Cuab Yeej Hluav Taws Xob Hauv Sab Nraud, Kev Teeb Pom Kev?
Tso lus
Nyob rau sab nraum lub chaw tshuaj, lub PTFE immersion rhaub ua haujlwm nyob rau hauv ib puag ncig nyuaj. Qhov chaw no muaj xws li nag, txias txias, UV hluav taws xob, plua plav, condensation, thiab txuas ntxiv thermal cycling. PTFE sheath tiv taus cov tshuaj thiab tuaj yeem cuam tshuam nrog cov acids hnyav thiab cov kuab tshuaj, tab sis cov khoom siv hluav taws xob nyob ib ncig ntawm lub rhaub yog feem ntau qhov tsis muaj zog. Kev nkag mus ntawm noo noo, UV puas thiab teeb meem hauv av tuaj yeem ua ntsiag to tig lub tshuab cua sov ua kom muaj hluav taws xob txaus ntshai.
Lub hnub, nag thiab txias tsis muaj kev hlub tshua zoo li cov kua qaub, thiab kev tiv thaiv hluav taws xob yuav tsum tau tsim los tiv thaiv lawv. Rau kev siv sab nraum zoov, lub sij hawm ntev - kev nyab xeeb ntawm PTFE lub rhaub tsis muaj ntau ntawm cov fluoropolymer sheath nws tus kheej, tab sis nyob ntawm kev ncaj ncees ntawm ib puag ncig hluav taws xob enclosure, grounding system, thiab weatherproof kev coj ua.
Vim li cas kev tiv thaiv hluav taws xob sab nraum zoov tsim nyog?
Kev teeb tsa cua sov sab nraum zoov yog tas li raug kev kub ntxhov ib puag ncig uas cov tshuab sab hauv tsev tsis tshua pom.
Cov no yog cov xwm txheej xws li:
Rain propelled by cua
Cov dej sawv ntsug
Ua Ice
Ultraviolet hluav taws xob
Ntse kub hloov pauv
Condensation cycles
Corrosive atmospheric kuab paug
Yog tias qhov hluav taws xob tiv thaiv tsis muaj zog, noo noo yuav nkag mus rau hauv cov khoom siv hluav taws xob.
Cov txiaj ntsig muaj peev xwm yuav yog:
Lub ntiaj teb ua txhaum
Hluav taws xob taug qab
Corrosion ntawm lub davhlau ya nyob twg
Ntshai taug kev
Kev puas tsuaj ntawm rwb thaiv tsev
Kev pheej hmoo ntawm kev poob siab
Cua sov kev puas tsuaj
Qhov no txhais tau hais tias txoj kev muaj zog tshaj ntawm kev txhim kho hluav taws xob kev nyab xeeb ntawm sab nraum zoov PTFE cua sov tshaj li niaj zaus rau hauv cov khoom siv.
Vim li cas IP66 lossis IP67 Terminal Enclosure tseem ceeb
Lub davhlau ya nyob twg hlws ris lub thawv yog lub hauv paus huab cua barrier rau lub rhaub cov hluav taws xob sib txuas.
Rau kev teeb tsa sab nrauv, lub thawv yuav tsum tau ntsuas qhov tsawg kawg nkaus:
IP66
IP67
Cov kev tiv thaiv ingress no ntsuas kev tiv thaiv ib puag ncig hnyav.
Kev tiv thaiv IP66 yog dab tsi
IP66 enclosure yog tsim los tiv thaiv:
Cov dej ntws muaj zog
Los nag hnyav
Cua- cua ya raws
Plua plav noj
Kev Tiv Thaiv IP67 piav qhia
IP67 enclosure muaj kev tiv thaiv ntau dua, suav nrog:
Kev tiv thaiv ib ntus immersion
Zoo sealing los ntawm cov dej sawv ntsug
Txhim kho ib puag ncig kev sib cais
Ib lub thawv uas raug pom zoo yog qhov yuav tsum tau ua, vim tias cov thawv ntim khoom lag luam uas tsis muaj ntawv pov thawj yuav ua tsis tiav tom qab muaj kev cuam tshuam rau sab nraud.
Cable Gland Xaiv thiab UV Resistance
Txawm tias ib qho chaw kaw zoo tuaj yeem cuam tshuam los ntawm cov qog tsis ncaj ncees lawm.
Cable caj pas yog ib qho ntawm feem ntau qhov chaw uas ya raws pom nws txoj kev mus rau sab nraum zoov cua sov systems.
Vim li cas UV Resistance tseem ceeb
Txheem yas cable caj pas tuaj yeem loj hlob nkig dhau sijhawm thaum raug tshav ntuj.
Ultraviolet deterioration tuaj yeem ua rau:
Sib cais
Foob contraction
Tsis muaj compression
Dej nkag
Kev tawg, mechanical
Yog li rau kev teeb tsa sab nraum zoov, cov khoom siv qog yuav tsum yog UV resistant xws li:
Nylon, dub, UV-stabilized
Brass, npib tsib xee -plated
Cable Glands Stainless hlau
Lub caj pas cable yuav tsum yog tib qib kev tiv thaiv raws li lub kaw lus kom muaj kev ncaj ncees ib puag ncig.
Yuav tiv thaiv Internal Condensation li cas
Txawm tias qhov zoo tshaj plaws kaw cov ntaub thaiv sab nraud tuaj yeem muaj cov dej noo tsim - sab hauv .
Txhua hnub kub hloov pauv feem ntau ua rau muaj kev hloov pauv siab hauv lub thawv davhlau ya nyob twg. Nyob rau hauv lub caij txias, thaum kub poob, huab cua sov tuaj yeem nkag mus thiab condense hauv.
Thaum lub sij hawm condensation yuav ua rau:
Terminal corrosion
Rwb thaiv tsev deterioration
Cov kab hluav taws xob xau
Ntiaj Teb Faults
Kev puas tsuaj relay
Breather Vents thiab Drain Holes
Lub thawv davhlau ya nyob twg yuav tsum tau tsim ua kom tiv thaiv kev sau ntawm noo noo:
Ib lub qhov dej ua tau zoo
Lub tshuab nqus pa rau condensation.
Siab- sib npaug ntawm daim nyias nyias qhov twg siv tau
Cov yam ntxwv no tso cai rau cov dej noo kom khiav tawm uas raug kaw thiab tiv thaiv ib puag ncig.
Yog tias tsis muaj kev tswj xyuas condensation, txawm tias IP67 enclosure yuav muaj kev puas tsuaj rau cov dej hauv lub sijhawm.
Kev Tiv Thaiv Kev Tiv Thaiv Hauv av
Feem ntau cov cua sov sab nraum zoov yuav tsum muaj kev tiv thaiv hauv av.
Cov khoom siv hluav taws xob yuav tsum muaj kev tiv thaiv los ntawm kev cuam tshuam hauv av lossis cuam tshuam cov khoom siv tiv thaiv tam sim no.
Kev Tiv Thaiv Qib Ib txwm
Muaj ntau daim ntawv thov kev lag luam tso cai rau kev tiv thaiv rhiab heev los teeb tsa:
30 mA rau kev tiv thaiv tus kheej "
Cov cuab yeej tiv thaiv siab dua thaum ua tau
Qhov chaw xaiv nyob ntawm:
Cov yam ntxwv ntawm lub rhaub dej ntws
Qhov tseem ceeb ntawm cov txheej txheem
Cov cai tswj hluav taws xob.
Kev npaj ntawm earthing ntawm lub system
Kev tiv thaiv kev ua txhaum hauv av tam sim ntawd mus rau lub zog yog tias muaj qhov tsis xav txog tam sim no los rau hauv av tshwm sim.
Qhov kev tiv thaiv no tseem ceeb tshwj xeeb tshaj yog nyob rau sab nraum cov dej noo.
Qhov tseem ceeb ntawm Kev Tsim Nyog Zoo
Tus neeg xyuas pib hauv av yog qhov kawg thiab tseem ceeb tshaj plaws ntawm kev nyab xeeb hluav taws xob hauv kev ua kom tiav cov cua sov.
Yog tias cov rwb thaiv tsev tsis ua haujlwm lossis cov dej noo nkag mus, cov hauv av muab txoj hauv kev nyab xeeb rau kev txhaum tam sim no kom deb ntawm tib neeg thiab khoom siv.
Grounding System Requirements
Kev sib txuas rau lub ntiaj teb yuav tsum yog:
Ruaj ntseg mechanically
Corrosion-resistant.
Tsawg Resistance 3.
Kev tshuaj xyuas tsis tu ncua
Pom zoo raws li kev kuaj xyuas
Yog tias tus neeg xyuas pib hauv av tsis ua haujlwm, lub tshuab cua sov tuaj yeem nyob hauv hluav taws xob thaum lub sijhawm ua haujlwm tsis muaj kev tiv thaiv kev ua haujlwm zoo.
Kev ncaj ncees ntawm cov av yuav tsum tau txheeb xyuas rau sab nraum zoov PTFE cua sov, tsis txhob muab tso rau.
Vim li cas 316L Stainless Steel Hardware thiaj nyiam
Hauv cov chaw cog tshuaj sab nraum zoov feem ntau muaj cov pa phem corrosive.
Ordinary hardware tuaj yeem xeb sai sai raws li cov txiaj ntsig ntawm:
Dej nag
Vapors ntawm cov tshuaj
Ntsev cua ntsev cua
UV hluav taws xob
Thermal cycling
Yog li, cov khoom siv sab nraud yuav tsum tau ua los ntawm 316L stainless hlau.
Qhov no npog:
Fasteners ( )
Brackets, mounting
Holders rau cables
Lugs rau grounding
Sab nraud fittings
Corrosion-cov khoom siv tiv taus tiv thaiv kev ruaj ntseg thiab hluav taws xob txuas ntxiv thaum lub sijhawm ua haujlwm ntev.
Mounting siab dua thiab tiv thaiv dej nyab
Tsis txhob nruab cov cua sov sab nraum zoov ntawm qib uas cov dej tuaj yeem sau tau.
Muaj xwm txheej tsawg-Kev teeb tsa theem
Lub kaw lus tuaj yeem raug cov dej sib tov (los nag):
Ntev - lub sij hawm immersion
Corrosion accelerates
Cable wicking
Hluav taws xob to
Kev puas tsuaj los ntawm khov
Yog tias ua tau, tso lub tshuab ua kom sov ua kom tiav thiab lub thawv sib txuas saum toj ntawm qib uas tau kwv yees tias cov dej yuav sib sau.
Qhov siab kuj ua rau nws yooj yim rau kev tshuaj xyuas thiab txo qhov kev tsim- ntawm cov khib nyiab.
Hluav taws xob cov qauv thiab kev ua raws cai
Muaj cov txheej txheem kev nyab xeeb thiab cov cai rau kev teeb tsa hluav taws xob sab nraum zoov.
Hauv Teb Chaws Asmeskas cov kev cai tau teev tseg hauv:
National Electric Code (NEC) Tshooj 300
NEC Tshooj 310
Cov txheej txheem thoob ntiaj teb cuam tshuam IEC muaj cov kev xav tau zoo sib xws rau:
Tiv thaiv peb ib puag ncig
Cable tswj
Cov txheej txheem hauv av
Kev tiv thaiv kev ya raws
Cov kab hluav taws xob sab nraum zoov
Kev ua raws li cov qauv no yog tsim nyog rau ob qho tib si kev nyab xeeb kev ua haujlwm thiab kev tswj xyuas cov ntawv pov thawj.
Hom tsis ua hauj lwm ntawm sab nraum zoov PTFE lub tshuab cua sov
Nyob rau hauv chav kawm ntawm kev tshuaj ntsuam xyuas, ib tug xov tooj ntawm cov teeb meem rov tshwm sim tsis tu ncua.
Permeability ntawm noo noo los ntawm cov qog ua kua
Kev nkag mus qeeb dej feem ntau yog los ntawm cov qog tsis zoo los yog cov qog tsis zoo.
Kev Tiv Thaiv Kev Tiv Thaiv Poob ploj lawm
Cov kev txhim kho qub yuav tsis muaj cov txheej txheem tiv thaiv kev tiv thaiv tam sim no.
Corrosion los ntawm Internal Condensation
airflow tsis zoo nyob rau hauv lub thawv kaw feem ntau rhuav tshem cov terminals thiab relays.
Flexible Conduit rau UV Resistance
Nyob rau tib lub sijhawm, lub hnub ci tuaj yeem ua rau cov khoom siv tsis zoo ntawm cov kav dej nkig.
Kev sib txuas hauv av xoob
Corrosion los yog tsis ruaj ntseg kho vajtse yuav ua txhaum txoj kev tiv thaiv hauv av.
"Kev tshuaj xyuas niaj hnub thiab kev tiv thaiv kev saib xyuas tseem yog tus yuam sij rau kev cia siab rau lub sijhawm ntev -.
Cov lus kawg
Sab nraum zoov PTFE lub tshuab cua sov yuav tsum tau ntau tshaj li tshuaj tiv thaiv. Cov txheej txheem tag nrho ntawm cov dej tsis zoo, UV resistant, corrosion resistant thiab zoo grounded hluav taws xob tiv thaiv yog ib qho tseem ceeb rau lub sij hawm ntev kev nyab xeeb nyob rau hauv cov chaw raug.
Nyob rau hauv daim duab dav dav ntawm sab nraum zoov PTFE lub rhaub hluav taws xob kev nyab xeeb, kev sib xyaw ntawm IP66 lossis IP67 lub davhlau ya nyob twg enclosures, UV- cov qog ua haujlwm ruaj khov, tiv thaiv kev ua txhaum hauv av, thiab cov khoom siv hauv av muaj zog thiab kev tswj xyuas condensation tsim qhov tseeb tiv thaiv kev tiv thaiv hluav taws xob tsis zoo.
Lub tshuab cua sov rau kev pabcuam sab nraum zoov yuav tsum tau muab kev tiv thaiv hluav taws xob zoo li rugged raws li cov tshuaj tiv thaiv kab mob. Nyob rau hauv ib puag ncig hostile, lub neej ntawm cov kab ke feem ntau yog nyob ntawm kev tiv thaiv cov ntsiab lus los ntawm kev nrhiav txoj hauv kev me me mus rau hauv av txhaum.
