UL 1973: 2022kev hloov kho loj,
UL 1973: 2022,

▍ CTUVus & ETL CERTIFICATION yog dab tsi?

OSHA (Occupational Safety and Health Administration), koom nrog US DOL (Department of Labor), xav kom txhua yam khoom siv hauv chaw ua haujlwm yuav tsum tau kuaj thiab ntawv pov thawj los ntawm NRTL ua ntej muag hauv khw. Cov qauv xeem siv tau suav nrog American National Standards Institute (ANSI) cov qauv; American Society for Testing Material (ASTM) cov qauv, Underwriter Laboratory (UL) cov qauv, thiab lub koom haum kev sib nrig sib lees paub cov qauv.

▍OSHA, NRTL, cTUVus, ETL thiab UL cov ntsiab lus txhais thiab kev sib raug zoo

OSHA:Abbreviation of Occupational Safety and Health Administration. Nws yog kev koom tes ntawm US DOL (Department of Labor).

NRTL:Abbreviation of Nationally Recognized Testing Laboratory. Nws yog tus saib xyuas ntawm lab kev lees paub. Txog tam sim no, muaj 18 lub koom haum thib peb uas tau pom zoo los ntawm NRTL, suav nrog TUV, ITS, MET thiab lwm yam.

cTUV:Daim ntawv pov thawj ntawm TUVRh hauv North America.

ETL:Abbreviation of American Electrical Testing Laboratory. Nws tau tsim nyob rau xyoo 1896 los ntawm Albert Einstein, tus neeg tsim khoom Asmeskas.

UL:Cov ntawv luv ntawm Underwriter Laboratories Inc.

▍ Qhov txawv ntawm cTUVus, ETL & UL

▍ Vim li cas MCM?

● Kev txhawb nqa muag los ntawm kev tsim nyog thiab thev naus laus zis:Raws li lub chaw kuaj neeg ua pov thawj ntawm TUVRH thiab ITS hauv North American Certification, MCM muaj peev xwm ua tau txhua yam kev sim thiab muab kev pabcuam zoo dua los ntawm kev sib pauv tshuab ntsej muag.

● Kev txhawb nqa nyuaj los ntawm kev siv tshuab:MCM tau nruab nrog tag nrho cov khoom siv ntsuas rau cov roj teeb ntawm qhov loj-loj, me me thiab cov haujlwm ua tau zoo (xws li lub tsheb fais fab, lub zog cia, thiab cov khoom siv hluav taws xob digital), muaj peev xwm muab tag nrho cov roj teeb kuaj thiab ntawv pov thawj cov kev pabcuam hauv North America, npog cov qauv. UL2580, UL1973, UL2271, UL1642, UL2054 thiab lwm yam.

UL 1973: 2022tau luam tawm rau lub Ob Hlis 25th. Cov qauv no yog raws li ob lub tswv yim tawm tswv yim tawm thaum lub Tsib Hlis thiab Lub Kaum Hli 2021. Cov qauv hloov kho nthuav dav, suav nrog lub zog pab lub zog (xws li teeb pom kev zoo thiab kev sib txuas lus).
Append 7.7 Transformer: transformer rau roj teeb system yuav tsum tau ntawv pov thawj raws li UL 1562 thiab UL 1310 lossis cov qauv tsim nyog. Tsawg voltage tuaj yeem lees paub hauv qab 26.6.
Hloov tshiab 7.9: Kev Tiv Thaiv Circuits thiab Kev Tswj: roj teeb lub cev yuav tsum muab hloov lossis tawg, qhov tsawg kawg nkaus yuav tsum yog 60V tsis yog 50V. Ntxiv kev xav tau rau kev qhia rau overcurrent fuse.
Hloov kho 7.12 Cells (roj teeb thiab electrochemical capacitor): Rau rechargeable Li-ion hlwb, yuav tsum tau kuaj nyob rau hauv annex E, yam tsis xav txog UL 1642. Cells kuj yuav tsum tau soj ntsuam yog tias ua tau raws li qhov kev thov ntawm kev nyab xeeb tsim, xws li cov khoom thiab txoj hauj lwm ntawm insulator, kev them nyiaj ntawm anode thiab cathode, thiab lwm yam.
Append 16 High Rate Charge: Ntsuam xyuas kev tiv thaiv kev tiv thaiv ntawm lub roj teeb uas muaj ntau tshaj qhov them tam sim no. Yuav tsum tau kuaj hauv 120% ntawm qhov siab tshaj plaws them tus nqi.
Append 17 Short Circuit Test: Ua ntsuas luv luv rau cov roj teeb uas xav tau kev teeb tsa lossis hloov pauv.