Raws li peb paub, muaj ntau cov qauv kev ntsuas los ntsuas cov chav kawm ntawm cov khoom siv hluav taws xob thiab lawv tiv taus li cas rau kev zam ntawm qee yam khoom.NEMA ratings thiab IP ratings yog ob txoj kev sib txawv los txhais cov qib ntawm kev tiv thaiv cov khoom xws li dej thiab plua plav, txawm hais tias lawv siv ntau txoj hauv kev los ntsuas thiab ntsuas los txheeb xyuas lawv cov khoom ntim.Ob leeg yog cov kev ntsuas zoo sib xws, tab sis lawv tseem muaj qee qhov sib txawv.
Lub tswv yim ntawm NEMA yog hais txog National Electrical Manufacturers Association (NEMA) uas yog lub koom haum lag luam loj tshaj plaws ntawm cov khoom siv hluav taws xob hauv Washington DC, Tebchaws Meskas.Nws luam tawm ntau tshaj 700 tus qauv, cov lus qhia, thiab cov ntaub ntawv qhia.Marjory ntawm cov qauv yog cov rau hluav taws xob enclosures, motors thiab hlau nplaum hlau, AC plugs, thiab receptacles.Ntxiv mus, NEMA connectors tsis tsuas yog thoob ntiaj teb nyob rau hauv North America tab sis kuj siv los ntawm lwm lub teb chaws.Lub ntsiab lus yog NEMA yog ib lub koom haum uas tsis koom nrog kev pom zoo thiab kev txheeb xyuas cov khoom.NEMA kev ntsuam xyuas nthuav tawm qhov ruaj khov lub peev xwm los tiv thaiv qee qhov chaw ib puag ncig kom ntseeg tau tias muaj kev nyab xeeb, kev sib raug zoo, thiab kev ua haujlwm ntawm cov khoom siv hluav taws xob.Cov kev ntsuam xyuas yog txawv txawv siv rau cov khoom siv mobile thiab yog thawj siv rau cov ntaub ntawv ruaj khov.Piv txwv li, NEMA qhov ntsuas yuav raug siv rau lub thawv hluav taws xob ruaj khov uas tau teeb tsa sab nraud, lossis ib qho chaw ruaj khov siv los tso qhov chaw nkag mus rau wireless.Feem ntau cov ntaub thaiv npog raug ntsuas rau kev siv nyob rau hauv ib puag ncig sab nraud koom nrog NEMA 4 qhov ntsuas.Cov qib yog los ntawm NEMA 1 txog NEMA 13. NEMA ratings (Appendix I) muaj ntau yam kev cai nruj kom ua raws li kev tiv thaiv ntawm cov dej khov sab nraud, cov khoom siv corrosive, roj immersion, plua plav, dej, thiab lwm yam. Cov kev ntsuas no tsis tshua muaj siv rau mobile pab kiag li lawm piv rau cov tsau sawv daws yuav.
Lub International Electrotechnical Commission (IEC) yog lub koom haum thoob ntiaj teb cov qauv uas npaj thiab tshaj tawm cov qauv thoob ntiaj teb rau hluav taws xob, hluav taws xob, thiab lwm yam technologies.IEC cov qauv muaj xws li ntau yam thev naus laus zis los ntawm kev tsim hluav taws xob, kev sib kis, thiab ua rau cov khoom siv hauv chaw ua haujlwm thiab cov khoom siv hauv tsev, semiconductors, roj teeb, thiab hnub ci zog, thiab lwm yam. Cheebtsam ua raws li nws cov qauv thoob ntiaj teb.Ib qho ntawm cov qauv siv tswv yim hu ua Ingress Protection (IP) Code yog txhais los ntawm IEC tus qauv 60529 uas faib thiab ntsuas cov qib kev tiv thaiv los ntawm cov cuab yeej siv tshuab thiab cov khoom siv hluav taws xob tiv thaiv kev nkag mus, plua plav, kev sib cuag, thiab dej.Nws muaj ob tug lej.Thawj tus lej qhia txog qib kev tiv thaiv uas lub kaw lus muab kev tiv thaiv kev nkag mus rau qhov chaw muaj kev phom sij xws li cov khoom txav mus los, thiab cov keyboards.Tsis tas li ntawd, kev nkag mus ntawm cov khoom siv yuav raug nthuav tawm raws li qib ntawm 0 mus rau 6. Tus lej thib ob qhia txog qib kev tiv thaiv uas lub kaw lus muab kev tiv thaiv kev puas tsuaj ntawm cov dej uas yuav raug lees paub los ntawm qib 0 txog 8. Yog tias muaj tsis tas yuav tsum tau teev nyob rau hauv ib qho ntawm cov teb no, tsab ntawv X yuav raug hloov los ntawm tus lej sib raug.
Raws li cov ntaub ntawv saum toj no, peb paub tias NEMA thiab IP yog ob qhov kev ntsuas kev tiv thaiv.Qhov sib txawv ntawm NEMA kev ntsuam xyuas thiab IP kev ntsuam xyuas uas yav dhau los suav nrog kev tiv thaiv cov dej khov sab nraud, cov khoom siv corrosive, roj immersion, plua plav, thiab dej, thaum tom kawg tsuas yog suav nrog kev tiv thaiv plua plav thiab dej.Nws txhais tau tias NEMA npog ntau cov qauv kev tiv thaiv ntxiv xws li cov khoom siv corrosion rau IP.Hauv lwm lo lus, tsis muaj kev hloov pauv ncaj qha ntawm lawv.NEMA cov qauv txaus siab lossis tshaj qhov kev ntsuas IP.Ntawm qhov tod tes, kev ntsuam xyuas IP tsis tas yuav ua tau raws li NEMA cov qauv, txij li NEMA suav nrog cov khoom lag luam ntxiv thiab cov kev ntsuam xyuas uas tsis muaj los ntawm IP rating system.Rau thaj tsam ntawm daim ntawv thov, NEMA yog dav siv rau cov ntawv thov kev lag luam thiab feem ntau siv hauv North America, qhov kev ntsuam xyuas IP tuaj yeem npog cov ntawv thov thoob ntiaj teb.
Hauv cov ntsiab lus, muaj kev sib raug zoo ntawm NEMA kev ntsuam xyuas thiab kev ntsuam xyuas IP.Txawm li cas los xij, qhov no yog kev txhawj xeeb rau plua plav thiab dej.Txawm hais tias nws muaj peev xwm los sib piv ob qhov kev sim no, qhov kev sib piv tsuas yog cuam tshuam nrog kev tiv thaiv plua plav thiab ya raws.Qee cov tuam txhab lag luam ntawm cov khoom siv txawb yuav suav nrog NEMA kev ntsuas hauv lawv cov kev qhia tshwj xeeb, thiab nws yog qhov tseem ceeb kom nkag siab tias NEMA specification cuam tshuam li cas rau nws qhov kev ntsuas IP.
Post lub sij hawm: Jun-27-2022