Txhawm rau muab kev tiv thaiv los ntawm kev phom sij xws li tib neeg kev sib cuag thiab huab cua tsis zoo, hluav taws xob circuitry thiab lwm yam khoom siv xws li hluav taws xob tawg feem ntau yog muab tso rau hauv cov ntaub ntawv.Tab sis txij li qee qhov xwm txheej hu kom muaj kev tiv thaiv ntau dua li lwm tus, tsis yog txhua qhov chaw kaw tau tsim muaj vaj huam sib luag.Txhawm rau muab kev taw qhia txog qib kev tiv thaiv thiab kev tsim kho, National Electrical Manufacturers Association tau tshaj tawm cov txheej txheem uas tau lees paub thoob plaws hauv kev lag luam hluav taws xob raws li tus qauv de facto rau cov khoom siv hluav taws xob.
Ntawm qhov ntau ntawm NEMA kev ntsuam xyuas, NEMA 4 enclosure yog nquag siv rau nws txoj kev tiv thaiv cov ntsiab lus, suav nrog huab cua txias thiab tsim cov dej khov rau sab nrauv ntawm lub qhov rooj.NEMA 4 muaj kev tiv thaiv qib ntxiv, thiab yog qhov qis tshaj-rated plua plav pov thawj NEMA enclosure.Tsis tas li ntawd, nws tuaj yeem tiv thaiv cov dej txaws thiab txawm tias cov dej xa mus.Txawm li cas los xij, nws tsis yog tawg-pov thawj, yog li nws tsis haum rau kev siv ntau yam kev phom sij.
Tsis tas li ntawd, NEMA 4X enclosure kuj tau tsim.Raws li tau yooj yim twv, NEMA 4X yog ib qho ntawm cov kev ntsuam xyuas NEMA 4, yog li nws muab tib theem ntawm kev tiv thaiv huab cua sab nraum zoov, tshwj xeeb tshaj yog tiv thaiv av, nag, nag thiab cua daj cua dub.Nws kuj tseem muab tib theem ntawm kev tiv thaiv cov dej txaws.
Qhov txawv yog tias NEMA 4X yuav tsum tau muab kev tiv thaiv ntxiv tiv thaiv corrosion tshaj qhov uas tau muab los ntawm NEMA 4. Vim li ntawd, tsuas yog cov ntaub thaiv npog uas tau tsim los ntawm cov khoom siv corrosion-resistant, xws li stainless hlau thiab txhuas, tuaj yeem tsim nyog rau NEMA 4X rating.
Raws li yog cov ntaub ntawv nrog ntau NEMA enclosures, ntau yam kev xaiv kuj yuav raug ntxiv, suav nrog kev yuam cua thiab kev tswj huab cua sab hauv.
Lub sij hawm xa tuaj: Plaub Hlis-18-2022