Hauv cov cheeb tsam uas muaj dej khov thiab daus npog, kev xaiv ib txoj hlua hluav taws xob tuaj yeem cuam tshuam rau kev nyab xeeb thiab kev ruaj khov ntawm tag nrho lub zog hluav taws xob. Hauv cov huab cua txias heev, cov hlua hluav taws xob PVC rwb thaiv tsev thiab cov hlua hluav taws xob PVC sheath tuaj yeem ua rau tawg yooj yim, tawg yooj yim, thiab txo qhov ua haujlwm hluav taws xob, ua rau muaj kev puas tsuaj lossis kev nyab xeeb. Raws li Power Engineering Cable Design Standard, cov cheeb tsam uas muaj qhov kub tsawg kawg nkaus txhua xyoo hauv qab -15 ° C xav tau cov hlua hluav taws xob kub qis tshwj xeeb, thaum cov cheeb tsam hauv qab -25 ° C xav tau cov hlua hluav taws xob tiv taus txias tshwj xeeb, cov hlua hluav taws xob armored, lossis cov hlua hlau armored daim kab xev.
1. Kev cuam tshuam ntawm Kev Txias Hnyav rau Cables
Cov xov hluav taws xob uas kub tsawg yuav ntsib ntau yam teeb meem. Qhov teeb meem uas tshwm sim thaum kub tsawg yog qhov teeb meem loj tshaj plaws. Cov xov hluav taws xob uas muaj PVC npog tsis yooj ywm, tawg thaum khoov, thiab tej zaum yuav tsis ua tau raws li qhov xav tau ntawm qhov chaw nyuaj. Cov ntaub ntawv rwb thaiv tsev, tshwj xeeb tshaj yog PVC, yuav lwj, ua rau muaj teeb meem xa xov lossis xa hluav taws xob tawm. Cov xov hluav taws xob uas muaj hlau tiv thaiv, suav nrog cov xov hlau uas muaj hlau tiv thaiv, yuav tsum tau siv qhov kub siab tshaj -10°C, thaum cov xov hluav taws xob uas tsis muaj hlau tiv thaiv muaj cov kev cai nruj dua.XLPE-cov cables uas muaj rwb thaiv tsev, cov cables PE-sheathed, thiab cov cables LSZH-sheathed yuav tsum tau ua ntej hauv qhov chaw sov rau tsawg kawg 24 teev ntawm ≥15 ° C ua ntej kev teeb tsa kom tswj tau qhov kev ua tau zoo tshaj plaws.
2. Nkag Siab Txog Cov Qauv Cable
Kev xaiv cov cable zoo pib nrog kev nkag siab txog nws tus qauv code, uas qhia txog hom cable, cov khoom siv conductor, rwb thaiv tsev, lub plhaub sab hauv, cov qauv, lub plhaub sab nraud, thiab cov khoom tshwj xeeb.
Cov Khoom Siv Hluav Taws Xob: Cov tub ntxhais tooj liab ("T") yog qhov zoo dua nyob rau hauv thaj chaw txias rau kev ua hluav taws xob zoo dua hauv qhov kub qis. Cov tub ntxhais txhuas yog cim "L."
Cov Khoom Siv Rwb Thaiv Kub: V (PVC), YJ (XLPE), X (Roj Hmab). XLPE (YJ) thiab cov xov hluav taws xob uas rwb thaiv kub roj hmab muaj kev ua haujlwm zoo dua thaum kub qis.
Cov Khoom Siv Sheath: PVC muaj qhov txwv kub qis. PE, PUR (polyurethane), PTFE (Teflon), thiab LSZH sheaths muab kev tiv thaiv txias zoo dua rau cov xov hluav taws xob, cov xov tswj hwm, thiab cov xov hluav taws xob qis.
Cov Cim Tshwj Xeeb: TH (tropical ntub), TA (tropical qhuav), ZR (fire-retardant), NH (fire-resistant) tej zaum yuav tsim nyog. Qee cov xov hlau armored lossis tswj kuj tseem siv tauDaim kab xev Mylar or Daim kab xev Mylar Aluminium Foilrau kev sib cais, kev tiv thaiv, lossis kev tiv thaiv kho tshuab zoo dua.
3. Kev Xaiv Cable los ntawm Kub
Cov chaw txias sib txawv xav tau cov ntaub ntawv cable thiab kev tsim kho kom sib xws kom tiv thaiv kev ua tsis tiav ntawm lub kaw lus:
> -15°C: Cov xov hluav taws xob PVC-sheathed txheem siv tau, tab sis kev teeb tsa yuav tsum >0°C. Kev rwb thaiv tsev: PVC, PE, XLPE.
> -30°C: Cov ntaub ntawv sheath yuav tsum muaj PE, PVC uas tiv taus txias, lossis nitrile composite sheaths. Kev rwb thaiv tsev: PE, XLPE. Qhov kub ntawm kev teeb tsa ≥ -10°C.
<-40°C: Cov ntaub ntawv sheath yuav tsum yog PE, PUR, lossis PTFE. Kev rwb thaiv tsev: PE, XLPE. Qhov kub ntawm kev teeb tsa ≥ -20°C. Cov xov hlau armored, cov xov hlau steel armored, thiab cov xov hlau LSZH-sheathed yog qhov zoo dua rau kev ntseeg siab tshaj plaws.
4. Kev Txhim Kho thiab Kev Txij Nkawm
Kev teeb tsa cov xov hlau uas tiv taus txias yuav tsum tau npaj kom zoo. Kev ua kom cov xov hlau sov ua ntej yog qhov tseem ceeb thaum qhov kub poob qis dua qhov txwv pom zoo: 5–10°C (~3 hnub), 25°C (~1 hnub), 40°C (~18 teev). Kev teeb tsa yuav tsum ua tiav hauv 2 teev tom qab tawm hauv qhov chaw khaws cia kom sov. Ua tib zoo tuav cov xov hlau, tsis txhob poob, thiab txhawb nqa cov khoov, qhov nqes hav, lossis cov ntsiab lus nruj. Tshawb xyuas txhua cov xov hlau tom qab kev teeb tsa, suav nrog cov xov hlau armored, rau kev puas tsuaj ntawm lub plhaub, tawg, lossis teeb meem rwb thaiv tsev. Siv Daim Kab Xev Mylar lossis Daim Kab Xev Aluminium Foil Mylar raws li qhov xav tau rau kev tiv thaiv lossis kev sib cais hauv cov xov hlau teeb liab thiab cov xov hlau fais fab.
5. Kev Xav Txog Txhua Yam
Ntxiv rau qhov kub thiab txias, xav txog cov yam no thaum xaiv cov cables uas tiv taus txias:
Ib puag ncig kev teeb tsa: Kev faus ncaj qha, qhov av cable, lossis lub tais cuam tshuam rau kev tso cua sov thiab kev tiv thaiv tshuab. PE, PUR, PTFE, thiab LSZH sheaths yuav tsum tau phim raws li.
Cov Kev Cai Rau Fais Fab Thiab Cov Teeb Liab: Soj ntsuam qhov ntsuas hluav taws xob, lub peev xwm nqa tam sim no, kev ncaj ncees ntawm cov teeb liab, thiab kev tiv thaiv kev cuam tshuam. Tej zaum yuav xav tau Daim Kab Xev Aluminium Foil Mylar rau kev tiv thaiv cov xov hluav taws xob qis, cov xov hluav taws xob tswj, lossis cov xov hluav taws xob ntsuas.
Cov Kev Cai Tiv Thaiv Hluav Taws thiab Tiv Thaiv Hluav Taws: Tej zaum yuav xav tau ZR, NH, thiab WDZ (tsis muaj pa luam yeeb tsawg halogen) rau sab hauv tsev, qhov av, lossis qhov chaw kaw.
Kev Lag Luam thiab Lub Neej Siv Tau: Cov xov hlau XLPE, PE, PUR, PTFE, armored, lossis steel tape armored uas tiv taus txias muaj cov nqi siab dua thaum xub thawj tab sis txo qhov hloov pauv thiab lub sijhawm tsis ua haujlwm vim muaj kev puas tsuaj tsawg hauv qhov kub thiab txias.
Xaiv cov ntaub ntawv cable uas tiv taus txias, suav nrog PVC, XLPE, PE, PUR, PTFE, LSZH, armored, thiab steel tape armored cables, ua kom muaj kev ntseeg siab ntawm lub zog fais fab, kev ua haujlwm zoo, thiab kev ua haujlwm ntev hauv cov xwm txheej hnyav thaum lub caij ntuj no. Kev xaiv cable kom raug yog qhov tseem ceeb tsis yog rau kev ruaj khov ntawm lub zog xwb tab sis kuj rau kev nyab xeeb ntawm hluav taws xob tag nrho.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-21-2025