1. Rau cov ntaub ntawv rwb thaiv tsev, thov muab lub npe ntawm cov ntaub ntawv raw, xws li: GEPolycarbonate, LexanType104. Thaum ib feem tau ntawv pov thawj UL los yog pom zoo, thov ua pov thawj cov qauv tshwj xeeb ntawm ntu thiab qhia nws cov ntaub ntawv UL.
(a). Kev ua haujlwm hluav taws xob: rau cov khoom siv hluav taws xob thiab hluav taws xob. Muab hluav taws xob schematic daim duab (circuit diagram), hluav taws xob ntsuas ntsuas.
(b) Daim duab kos duab: Rau feem ntau cov khoom, daim duab kos duab lossis daim duab kos duab ntawm cov khoom, cov npe khoom, thiab lwm yam, yuav tsum muab.
(c) Cov duab, cov lus qhia rau kev siv, kev nyab xeeb, thiab lwm yam, lossis cov lus qhia kev teeb tsa ntawm cov khoom.
Thaum cov ntaub ntawv khoom tiav tiav, UL engineers yuav txiav txim siab raws li cov ntaub ntawv: UL cov qauv raws li kev sim, tus nqi engineering ntawm qhov kev xeem, lub sij hawm ntawm kev xeem, pes tsawg tus qauv, thiab lwm yam, thiab ceeb toom rau koj. sau ntawv, thiab xa daim ntawv thov raug cai thiab daim ntawv cog lus kev pabcuam rau koj lub tuam txhab. Tus nqi txwv uas tau teev tseg hauv daim ntawv thov kev pab yog tus nqi kwv yees los ntawm UL raws li qhov kev xeem. Tus nqi txwv tsis tuaj yeem hla dhau yam tsis muaj ntawv tso cai ntawm lub tuam txhab.
UL yog lub shorthand ntawm underwriters Laboratories (UnderwritesLaboratoriesInc.), nws yog ib tug ntawm lub ntiaj teb no tus loj dua ib tug kev ruaj ntseg xeem thiab kev ntsuam xyuas ntawm pej xeem cov tsev. Nyob rau hauv txoj kev loj hlob ntawm ntau tshaj 100 xyoo, nws tau tsim ib txheej ntawm nruj lub koom haum thiab kev tswj system, tus txheej txheem kev loj hlob thiab cov txheej txheem ntawv pov thawj cov khoom. Nws yog ib lub koom haum nonprofit, kev tshaj lij uas ua cov kev sim rau pej xeem kev nyab xeeb. Nws siv txoj kev tshawb fawb los kawm thiab txiav txim siab seb ntau yam khoom siv, khoom siv, khoom siv, khoom siv, vaj tse, thiab lwm yam puas tsim kev puas tsuaj rau lub neej thiab khoom; Txheeb xyuas, npaj thiab tshaj tawm cov qauv thiab cov ntaub ntawv uas tuaj yeem pab txo thiab tiv thaiv kev poob ntawm lub neej thiab khoom. Nyob rau tib lub sijhawm los ua cov lag luam tshawb fawb, cov khoom pov thawj kev nyab xeeb thiab kev ua haujlwm kev nyab xeeb daim ntawv pov thawj kev lag luam, nws lub hom phiaj kawg yog muab kev lag luam nrog cov khoom lag luam zoo.
Qhov siab tsawg kawg nkaus ntawm UL tus qauv sau npe lag luam yuav tsum yog 3/64 nti. Hauv kev ntim khoom, nws tsis yog qhov yuav tsum tau ua. Nws tseem yog lub ntiaj teb cov tuam txhab ntiag tug loj tshaj plaws koom nrog kev ntsuas kev nyab xeeb thiab kev txheeb xyuas, nws kuj yog tus tsim ntawm Teb Chaws Asmeskas cov qauv kev nyab xeeb khoom, kuj yog lub ntiaj teb loj tshaj plaws ntiav tsev koom nrog kev ntsuam xyuas kev nyab xeeb thiab kev txheeb xyuas, thaum lub voj voog sab nraud ntawm UL cim. tsawg dua 3/8 ntiv tes, nws yog saws. UnderwriterLaboratoriesInc, ua kev sim ntawm cov koom haum tshaj lij rau pej xeem kev nyab xeeb, UL yog qhov kev pov hwm kev sim. Nws tseem yog lub koom haum loj tshaj plaws ntawm pej xeem koom nrog kev soj ntsuam kev nyab xeeb thiab kev ntsuam xyuas hauv ntiaj teb. UnderwriterLaboratoriesInc. UL Safety Test Institute yog ib qho luv luv rau cov ntawv pov thawj los ntawm Tebchaws Meskas.
Lub sijhawm yog kwv yees li ib hlis tom qab xa cov ntaub ntawv tiav.
UL Certification - Daim Ntawv Pov Thawj Txheej Txheem UL Certification Txheej Txheem Khoom Siv rau UL cim muaj tsib kauj ruam:
1. Tus neeg thov yuav tsum xa daim ntawv thov rau lub tuam txhab thiab cov ntaub ntawv khoom: Koj yuav tsum thov UL los kuaj koj lub tuam txhab cov khoom hauv kev sau ntawv.
(1) Lub tuam txhab cov ntaub ntawv: muab cov ncauj lus kom ntxaws thiab meej lub npe, chaw nyob, tus neeg tiv tauj, tus lej xa ntawv, tus lej xov tooj thiab fax ntawm cov chav hauv qab no ua lus Suav thiab Askiv.
(2) Lub tuam txhab daim ntawv thov: lub tuam txhab uas thov rau cov khoom kuaj thiab yog lub luag hauj lwm rau tag nrho cov nqi kev pab cuam engineering
(3) Cov tuam txhab teev npe: tuam txhab uas muag uas muaj npe nyob rau hauv ntau yam khoom catalogs luam tawm los ntawm UL
(4) Kev cog qoob loo: cov chaw tsim khoom thiab cov khoom tsim khoom.
(5) Cov ntaub ntawv khoom: Cov ntaub ntawv khoom yuav tsum muab ua lus Askiv. Kev lag luam Asmeskas tag nrho yog tsom rau kev nyab xeeb ntawm cov khoom; Thaum cov neeg siv khoom thiab cov chaw yuav khoom xaiv cov khoom, lawv yuav xaiv cov khoom nrog UL daim ntawv pov thawj.
Cov txiaj ntsig ntawm UL yog dab tsi?
1. Yog tias cov cuab yeej raug muag hauv North American lag luam nrog UL, nws yuav nrov dua thiab nyiam los ntawm cov neeg siv khoom, uas qhia tau tias cov cuab yeej muaj kev ruaj ntseg ntau dua ntawm kev nyab xeeb thiab kev ntseeg tau. Tag nrho Asmeskas kev lag luam muab qhov tseem ceeb rau cov khoom lag luam kev nyab xeeb; Thaum cov neeg siv khoom thiab cov chaw tsim khoom xaj thiab xaiv cov khoom siv, lawv yuav pom zoo cov khoom siv nrog UL logo.
2. UL muaj keeb kwm txog 100 xyoo. Tag nrho cov duab ntawm kev nyab xeeb thiab kev ntseeg siab yog unshakable nyob rau hauv cov neeg muas zaub thiab cov neeg muas zaub.
3. Teb Chaws Asmeskas cov neeg siv khoom thiab xaj cov tub lag luam muaj kev ntseeg ntau dua rau cov khoom siv ntawm cov chaw tsim khoom.
4, Tebchaws Meskas, xeev, nroog, tag nrho ntau dua 40,000 cov cheeb tsam nom tswv, tau lees paub UL cim.
5. Thov rau UL khoom, yog ua ib lub Hoobkas zoo tshuaj xyuas txhua txhua xyoo, feem ntau yog ib lub hlis twg los ua ib lub Hoobkas zoo tshuaj ntsuam xyuas, plaub zaug ib xyoos, yog hais tias cov khoom xa tuaj loj, UL lub koom haum yuav ua ib lub Hoobkas zoo soj ntsuam raws li lub khoom xa tuaj. Ceev nrooj nkag siab UL daim ntawv pov thawj daim ntawv lo cim cov ntsiab lus cov qauv.
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