UL Stamp - Ntau tshaj li ib daim ntawv nplaum ntawm koj lub taub rhaub dej kub Lub Ob Hlis 17, 2020

Ib qho khoom siv uas yuav mus rau cov kab ntau lawm hauv Chicago lossis lub tshuab ntim khoom uas yuav mus rau Toronto yuav tsum muaj tag nrho nws cov khoom siv hluav taws xob cim nrog UL daim ntawv lo. Rau ntau tus neeg yuav khoom hauv lwm lub tebchaws, qhov no tuaj yeem tshwm sim zoo li kev tswj hwm kim kim uas feem ntau raug tso tseg raws li daim kab xev liab liab uas nce nqi yam tsis muaj txiaj ntsig meej. Vim li cas lub tshuab cua sov uas zoo li yooj yim yuav tsum tau ntawv pov thawj los ntawm North American lab? Qhov tseeb yog qhov tob dua: UL lub npe ntawm lub tshuab rhaub dej kub tsis yog ib daim ntawv nplaum xwb; nws yog kev cog lus ntawm kev nyab xeeb, kev ua tau zoo, thiab kev taug qab uas ua kom paub tseeb tias cov lag luam hauv Asmeskas thiab Canada tuaj yeem suav rau lawv cov haujlwm.

Founded ntau tshaj 100 xyoo dhau los, Underwriters Laboratories (UL) yog ntau tshaj li qhov chaw kuaj sim. Nws teeb tsa tus qauv rau kev nyab xeeb hluav taws xob hauv Asmeskas thiab Canada thiab muaj kev cuam tshuam rau cov qauv thoob ntiaj teb. Tau txais daim ntawv pov thawj UL rau lub tshuab cua sov, uas yog me me, cov khoom siv cylindrical siv los ua cov pwm pwm, tuag, thiab cov kua dej hauv cov txheej txheem kev lag luam, txhais tau hais tias cov khoom tau dhau qhov kev xeem nruj, cov qauv. Qhov no yog ntau tshaj li kev kuaj ceev xwb; nws suav nrog tag nrho cov kev ntsuam xyuas uas txhais tau tias yuav ua raws li -kev nyuaj siab hauv ntiaj teb. Kev ntsuam xyuas lub zog ntawm dielectric yog qhov tseem ceeb vim tias lawv muab cov rwb thaiv tsev los ntawm qhov hluav taws xob ntau dua li qhov nws ib txwm pom (feem ntau 1,500V lossis ntau dua) kom paub tseeb tias nws yuav tsis tawg thiab tsim cov luv luv. Txhawm rau kom ntseeg tau tias qhov kev txhaum tam sim no raug xa rov qab zoo thiab tsis muaj kev cuam tshuam, kev txuas ntxiv hauv av raug kuaj xyuas. Tsis tas li ntawd, kev soj ntsuam nruj yog nyob rau hauv qhov chaw kom paub tseeb tias qhov ntsuas kub nce siab ntawm qhov kawg ntawm lub davhlau ya nyob twg tsis pub dhau, uas tuaj yeem ua rau cov khoom nyob ze rau hluav taws. Lub tshuab hluav taws xob muaj hluav taws xob tsis tu ncua tuaj yeem ua haujlwm zoo hauv qhov chaw sim tswj, tab sis UL- pom tau tias ib qho tau pom tias muaj kev nyab xeeb, ua haujlwm tsis muaj hluav taws kub lossis poob siab, thiab ua tau raws li North American cov lej hluav taws xob zoo li National Electrical Code (NEC) hauv Asmeskas lossis Canadian Electrical Code (CEC).


Cov txheej txheem ntawv pov thawj tseem tsis tu ncua thiab koom nrog ntau dua li tsuas yog kuaj cov khoom thaum xub thawj. Nws kuj suav nrog kev kuaj xyuas lub Hoobkas kom paub tseeb tias qhov zoo ntawm qhov chaw tsim khoom zoo ib yam. Qhov no ntawm traceability yog ib qho tseem ceeb heev: txhua lub tshuab hluav taws xob muaj ntawv pov thawj muaj nws tus kheej cov ntaub ntawv, uas tso cai rau cov neeg soj ntsuam, cov neeg tuav pov hwm, lossis cov neeg siv kawg tshawb xyuas nws cov xwm txheej hauv UL online database. Qhov no txhais tau hais tias yog tias lub tshuab hluav taws xob lub tshuab hluav taws xob tawg hauv lub tshav pob, UL daim ntawv lo tawm ib daim ntawv rov qab mus rau kev tsim thiab tsim khoom. Qhov no ua rau nws yooj yim dua los nrhiav lub hauv paus ntawm qhov teeb meem thiab muab liam rau.

Raws li kev paub ntau yam hauv kev lag luam, ib qho kev ua yuam kev loj tshaj plaws ntawm cov neeg tsim khoom thiab cov khoom xa tawm yog xav tias "hnyav-lub luag haujlwm" saib lossis kev ua haujlwm yooj yim txhais tau tias ua raws. Lub tshuab cua sov uas tsis yog UL- ntawv pov thawj tuaj yeem haum snugly rau hauv lub qhov bore thiab ua kom sov lub pwm zoo thaum tsim qauv. Tab sis yog tias lub tshuab no raug coj los rau hauv Teb Chaws Asmeskas lossis Canada thiab muaj teeb meem hluav taws xob, xws li luv luv Circuit Court los ntawm kev ya raws los yog rwb thaiv tsev hnav, qhov tsis muaj UL cim tuaj yeem ua rau muaj qhov phem heev. Tsoom fwv hauv zos, cov neeg soj ntsuam hauv tsev, thiab cov tuam txhab tuav pov hwm feem ntau nug txog daim ntawv pov thawj no. Yog tias koj tsis muaj nws, koj qhov kev teeb tsa yuav raug tso tseg, uas yuav ua rau qeeb, tus nqi ntawm $ 10,000 txog $ 20,000 ib qho tshwm sim, lossis txawm tias muaj kev txwv tsis pub dhau. Hauv cov chaw uas muaj kev sib hais plaub, xws li North America, tsis ua raws li cov cai tuaj yeem ua rau muaj kev foob. Yog tias qhov chaw tsis tau lees paub ua rau raug mob lossis puas tsuaj rau cov khoom, cov tuam txhab tuaj yeem raug foob rau qhov tsis saib xyuas. Muaj ob peb qhov tiag -cov piv txwv hauv ntiaj teb ntawm cov neeg muag khoom txawv teb chaws tau kwv yees qhov no, uas ua rau cov khoom lag luam rov qab thiab ua rau lub koob npe puas.

Thaum tab tom nrhiav UL-cov ntawv pov thawj lub tshuab cua sov, koj yuav tsum tau ceev faj. Nws yog ib qho tseem ceeb kom paub tseeb tias daim ntawv pov thawj siv tau rau cov qauv tseeb, qhov ntsuas qhov hluav taws xob, thiab qhov chaw tsim khoom, tsis yog lub hom phiaj nkaus xwb. UL-Cov ntawv pov thawj pom zoo, uas feem ntau pom los ntawm "RU" cim lossis rov qab "UR," yog qhov zoo tshaj plaws rau lub tshuab cua sov. Nws txhais tau tias lawv tuaj yeem siv los ua cov khoom hauv cov khoom loj dua. Qhov no tsis zoo ib yam li UL-Cov cim npe, uas tsuas yog rau cov khoom lag luam uas sawv ib leeg xwb. Yog tias koj tsis tuav cov qib no, koj yuav siv cov ntawv thov tsis raug. Piv txwv li, kev siv cov khoom siv- ntsuas ntsuas cua sov hauv qhov kev teeb tsa raug pom tuaj yeem ua rau tsis muaj kev lav phib xaub lossis tsis raug kuaj xyuas. Yuav kom tau txais los ntawm cov ntsiab lus no, koj yuav tsum muaj kev txawj ntse. Piv txwv li, cov ntaub ntawv sheath (xws li stainless hlau rau corrosion kuj), watt ntom (txog 15 W / cm² rau cov cua kub zoo), thiab kev teeb tsa yuav tsum tau ua raws li cov qauv UL.

Txhawm rau txo kev phom sij, nws yog ib lub tswv yim zoo los ua haujlwm nrog cov neeg muag khoom uas tsuas yog muag cov khoom raws li North American cov qauv. Cov kws tshaj lij no tuaj yeem pab koj tsim cov phiaj xwm tshwj xeeb rau koj cov kev xav tau, los ntawm kev tsim cov khoom siv rau cov tsheb kom tsis muaj menyuam cov khoom siv kho mob, tag nrho thaum khaws cov ntawv pov thawj zoo thiab ua kom cov thermal precision yog qhov tseeb. Lawv feem ntau muab cov ntaub ntawv xws li Daim Ntawv Pov Thawj Ua Raws Cai (CoC) thiab cov ntawv xeem, uas ua rau nws yooj yim rau kev lis kev cai kom tshem tawm cov khoom thiab rau cov neeg siv kawg kom pom zoo rau lawv.

UL stamp yog ntau tshaj li ib daim duab zoo nkauj xwb; nws qhia txog kev mob siab rau qhov zoo uas ua rau tib neeg, khoom vaj khoom tsev, thiab tuam txhab muaj kev nyab xeeb. Rau cov tuam txhab lag luam thoob ntiaj teb tab tom nrhiav nkag mus rau North American kev lag luam, pom qhov "daim ntawv nplaum" no ua cov cuab yeej cuab tam tsis zoo dua li lub nra qhib cov kev xaiv tshiab, tsim kev ntseeg siab, thiab ua kom yooj yim kom haum rau hauv ib qho chaw muaj kev tswj hwm tshaj plaws hauv ntiaj teb. Cov tuam txhab uas muab UL- ntawv pov thawj cartridge tso cua sov ua ntej tsis tsuas yog ua raws li txoj cai, tab sis lawv kuj ua rau lawv cov khoom siv tau ntev dua thiab ua haujlwm zoo dua, hloov cov teeb meem uas yuav ua rau muaj txiaj ntsig zoo.