Yuav ua li cas paub txog ntau yam qauv ntawm UL ntawv pov thawj cables
Kev sib xyaw ntawm Model Code
Tus qauv code ntawm UL certified cables feem ntau yog tsim los ntawm cov tsiaj ntawv thiab cov lej, uas sawv cev rau ntau lub ntsiab lus:
Tsab ntawv ntu: sawv cev rau cov khoom siv, qauv, kev siv ib puag ncig, lossis kev ua haujlwm tshwj xeeb ntawm cable. Piv txwv li, PVC sawv cev rau cov khoom siv rwb thaiv tsev polyvinyl chloride, thiab qee cov ntawv ua ke tuaj yeem xa mus rau cov txheej txheem tshwj xeeb (xws li ib leeg tub ntxhais hlau, sheathed hlau, shielded hlau, thiab lwm yam) lossis cov haujlwm tshwj xeeb (xws li nplaim taws, hluav taws kub - tiv taus, thiab lwm yam).
Cov lej feem ntau qhia txog cov kev qhia tshwj xeeb thiab qib kev ua tau zoo ntawm cov cable, xws li tus ntoo khaub lig- ntu ntu ntawm cov xaim (tejzaum nws qhia hauv American Wire Gauge AWG), ntsuas qhov ntsuas hluav taws xob, ntsuas kub, thiab lwm yam. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias UL xaim qauv tsis ncaj qha sawv cev rau tus ntoo khaub lig- ntu ntu ntawm tus neeg xyuas pib, tab sis yog qhov tshwj xeeb uas sawv cev siv.
Kev txheeb xyuas cov qauv tshwj xeeb
Qee cov qauv UL ntawv pov thawj cable thiab lawv cov yam ntxwv muaj xws li:
PVC insulated cables: xws li UL1007, UL1015, thiab lwm yam., uas sawv cev rau Asmeskas tus qauv ib leeg xov hlau, muaj cov qauv yooj yim, thiab tsim nyog rau kev sib txuas ntau yam khoom siv hluav taws xob.
Sheath hlau: xws li UL2464, UL2501, thiab lwm yam., ib txheej ntxiv ntawm sheath yog ntxiv rau sab nraum cov tub ntxhais insulated insulated los muab kev tiv thaiv zoo dua thiab tsim nyog rau kev xaim hauv ib puag ncig nyuaj.
Shielded hlau: Zoo ib yam li UL2464, UL2501, thiab lwm yam. (nco ntsoov tias cov qauv no kuj tseem muaj cov xov hlau sheathed), shielded hlau ntxiv ib txheej thaiv thaiv sab nraum cov tub ntxhais cable kom txo tau qhov cuam tshuam ntawm sab nraud electromagnetic cuam tshuam ntawm cov teeb liab kis.
