Raws li qhov tseem ceeb rau kev xa cov hluav taws xob uas muaj zog thiab cov xaim hluav taws xob thiab cov xaim tseem ceeb hauv txhua lub neej thaum xaiv cov xov xwm niaj hnub no thiab tsis muaj kev xaiv To understand this problem, we first need to have a deep understanding of several common cable cross-sectional area concepts before making a judgment. Next, we will analyze several commonly used cross-sectional areas in cables in detail.
01 Tsom xam ntawm "Nominal Cross-ntu thaj chaw" feem ntau siv hauv cables
Cov kab ke nominal-ntu yog tus nqi siv los txiav txim siab qhov tseeb ntawm cov khoom lag luam, thiab cov qauv tseem ceeb yog los pab cov ntaub ntawv kev tswj hwm thiab kev tswj hwm ntau thaum lub sijhawm tsim khoom lag luam txheej txheem .}}}}}}}}}}} {} Txawm li cas los xij, nws yuav tsum tau txais kev taw qhia txog kev tsim khoom thiab txawm li cas los xij, nws yuav tsum tau qhia ncaj qha rau kev ntsuas cov khoom lag luam ncaj qha
02 Kev Tshawb Xyuas ntawm "Kev Tsim Tus Ntoo Cuam Tshuam" Siv Siv Hauv Cables
Hauv kev tsim ntawm cov khoom faib hluav taws xob tsawg, kev xaiv ntawm cov chaw ua haujlwm thiab tshuaj ntsuam ntawm lawv tus cwj pwm tsis kam ntawm txhua tus neeg kos npe ntawm txhua tus txiv neej kev sib tw ntawm txhua tus neeg kos npe ntawm txhua tus txiv neej. {5
Tus qauv tsim muaj nuj nqis ntawm no hais txog qhov kev tsim qauv hla cheeb tsam ntawm cov xov tooj ntawm cov xov tooj ntawm cov xov tooj ntawm cov xov tooj ntawm cov xov tooj ntawm cov xov tooj ntawm cov xov tooj, ntau dua li ntsuas qhov ntsuas ncaj qha Tus nqi .
03 Kev Tshawb Xyuas ntawm "Qhov Tseeb Hla Ib Cheeb Tsam" feem ntau siv hauv cables
Qhov chaw hla ntawm qhov chaw nyob ntawm thaj tsam ntawm cov qauv ntawm Nominal-Instrumental, tab sis hais tias cov qauv kev tsim qauv ntawm thaj chaw (hla kev sib tw hla cheeb tsam (hluav taws xob hla ntu thaj chaw) nyob rau hauv thaj chaw ntawm ib cheeb tsam nominal-seem yuav tsum ua kom tau raws tus qauv {{10 {{.
Yog tias ib tug neeg saib xyuas cov khoom siv tau xaiv tau ntau dua, qhov kev sib tw tiag tiag tuaj yeem raug me me; hloov pauv, yog tias qhov kev tshaj tawm ntawm cov neeg saib xyuas cov khoom siv qis dua, qhov kev hla dhau yuav tsum loj dua .
04 Cov Kev Xav Tau rau cov neeg ua yeeb yam hla ntu hauv xaim thiab cov qauv hlau
Cov kev cai hla ntawm thaj chaw sib tw hauv cov xaim xaim thiab cov qauv hluav taws xob muaj cov qauv ntawm cov kab ke sib txawv, IEc60245, thiab lwm yam}}), European Cov Qauv (En50525, thiab lwm yam .) thiab lub teb chaws millimation) Cov neeg ua yeeb yam tsis kam lees tus nqi, ntau dua li ntsuas ntsuas qhov ntsuas ntawm tus neeg xyuas pib ntawm thaj chaw hla kev.
Nyob rau hauv lub teb chaws tus qauv, tus neeg qhuab qhia cable raug tshuaj xyuas kom tau raws li GB / T3956, feem ntau ntawm cov neeg sojntsuam ntawm tus neeg taug kev hauv qab ntawm GB / T3956; 2) Qhov tsis kam ntawm tus neeg xyuas pib ntawm 20℃yuav tsum tau raws li qhov yuav tsum tau ua ntawm GB / T 3956.
Nyob rau hauv GB / T3956, hom 1 (ntaus tus neeg kos npe), hom 2 thiab cov khoom siv hlau) thiab lwm yam 5 thiab hom 6 tus neeg saib xyuas tau siv hauv cov cab mos mos thiab xws li cov hlua hluav taws xob, thiab lwm yam}} .
05 cov ntsiab lus
Ntawm cov saum toj no plaub hom kev coj ua, tus neeg saib xyuas kev tshaj lij ntawm cov neeg saib xyuas kev tshaj lij ntawm cov neeg saib xyuas kev tshaj lij thaj chaw, thiab cov xaim xaim los yog cov naj npawb ntawm cov neeg coj ua raws li cov qauv yuav tsum tau ua, nws tuaj yeem raug txiav txim raws li tsim nyog.