Txhawm rau kom muaj kev nyab xeeb ntawm kev ua haujlwm ntawm lub zog hluav taws xob thiab kev nyab xeeb ntawm tib neeg lub neej thiab cov khoom ntiag tug, lub xeev tau tsim ntau cov qauv tsim nyog rau cov txheej txheem tsim cov hlau thiab cable. Hlau thiab cable ua ntej tawm hauv lub Hoobkas yuav tsum tau ua tib zoo ua raws li cov qauv ntsuas cov khoom. Niaj hnub no Pai De cable los tham txog cable nrhiav ~
Hlau thiab cable kuaj cov khoom feem ntau yog muab faib ua: kev kuaj pom thiab qauv, kev ntsuas hluav taws xob thiab kev ntsuas kev ua haujlwm.
structural dimension soj ntsuam
Kev tshuaj xyuas qhov tshwm sim thiab qauv yog thawj qhov kev tshuaj xyuas hauv kev tswj xyuas zoo ntawm cov xaim thiab cable, cov ntsiab lus tshuaj xyuas tuaj yeem muab faib ua: kev tshuaj ntsuam xyuas, qhov loj me, kev tshuaj xyuas cov qauv thiab kev kuaj xyuas cim.
Kev kuaj pom
Qhov saum npoo ntawm rwb thaiv tsev thiab sheath yuav tsum yog du thiab puag ncig, zoo li luster, tsis muaj eccentricity, tsis muaj kev puas tsuaj, du, tsis muaj khib nyiab, npuas, pores thiab pom tseeb hais txog qhov pom kev zoo;
Yuav tsum tsis muaj qhov sib npaug ntawm qhov tuab thiab slub cev, tsis muaj qhov sib txuas ntawm cov rwb thaiv tsev thiab cov neeg xyuas pib, kev rwb thaiv tsev thiab rwb thaiv tsev, rwb thaiv tsev thiab sheath. Lub txim txhaum kev kho qhov taw tes yuav tsum du thiab tiaj tus.
Dimensional soj ntsuam
Sampling thiab kev ntsuam xyuas cov txiaj ntsig: Peb cov qauv rwb thaiv tsev tau raug coj los ntawm txhua qhov insulated hlau core, thiab qhov nruab nrab tus nqi ntawm 18 qhov tseem ceeb tau txiav txim siab. Cov txiaj ntsig tau khaws cia rau 1 qhov chaw tom qab tus lej lej. Ob qhov decimal. Lub rwb thaiv tsev txheej thickness ntawm ntau yam xov hlau thiab cables yuav tsum tsis txhob tsawg tshaj li cov kev cai.
Kev txheeb xyuas tus cwj pwm
Lub teb chaws tus qauv xav kom cov cim ntawm cov hlau thiab cable yuav tsum muaj cov yam ntxwv ntawm kev hnav-tiv taus thiab txuas ntxiv, thiab yuav tsum tswj kom muaj qhov pom tseeb. Txoj kev tshawb nrhiav yog los so cov paj rwb uas nqus dej hauv cawv rov qab thiab tawm ob peb zaug ntawm qhov cim ntawm cov hlau thiab cable. Yog tias nws tseem meej tom qab so, nws txhais tau hais tias lub npe tsim nyog.
Kev txuas ntxiv hais txog qhov kev ncua deb ntawm qhov kawg ntawm ib qho kev kos npe thiab qhov pib ntawm qhov kos npe tom ntej, lub sheath Tsawg dua los yog sib npaug rau 550mm, qhov rwb thaiv tsev Tsawg dua los yog sib npaug rau 275mm, qhov kev ncua deb ntawm ob qhov nyob ib sab ntawm cov cim digital yuav tsum yog Tsawg dua los yog sib npaug li 50mm.
Dc kuj nrhiav kom tau
Dc kuj yog siv los ntsuas qhov hluav taws xob conductivity ntawm cov xov hlau thiab cables. Cov khoom siv thiab ntu ntu ntu ntawm cov xaim thiab cable kuj tseem cuam tshuam ncaj qha rau qhov loj ntawm DC tsis kam, yog li DC tiv thaiv txoj kev kuaj pom yog siv los xyuas qhov zoo ntawm cov khoom.
Dc resistance detection yog kuaj raws li txoj cai tiv thaiv, R=pL / S, qhov p yog qhov resistivity, L yog qhov ntev ntawm tus neeg xyuas pib, thiab S yog qhov chaw hla ntawm tus neeg xyuas pib.
Lub teb chaws tus txheej txheem teev tseg tias tus nqi kuj ntawm tus neeg xyuas pib ncav cuag tus nqi siab tshaj ntawm 20 degree, yog li cov ntaub ntawv DC tsis kam ntawm cov xaim thiab cable yuav tsum tau hloov ua ntej rau hauv DC tiv thaiv cov ntaub ntawv kilometers ntawm 20 degree, thiab tom qab ntawd muab piv nrog lub teb chaws tus qauv tus nqi. , yog tias tsawg dua tus qauv tus nqi, nws tsim nyog.
Rwb thaiv tsev kuj kuaj
Rwb thaiv tsev tsis kam kuaj yog hais txog tus nqi tsis kam ntawm cov khoom siv insulating ntawm ob lub conductors nyob rau hauv cov xwm txheej tshwj xeeb.
Rwb thaiv tsev kuj yog ib qho tseem ceeb ntawm cov khoom siv hlau thiab cable. Lub rwb thaiv tsev tsis kam qhia txog lub peev xwm insulating ntawm cov khoom nyob rau hauv ib txwm ua haujlwm. Nws muaj feem xyuam rau lub peev xwm ntawm cov khoom kom tiv taus hluav taws xob tawg lossis thermal tawg, qhov dielectric poob hauv cov rwb thaiv tsev thiab maj mam aging ntawm cov khoom rwb thaiv tsev nyob rau hauv kev ua hauj lwm muaj kev sib raug zoo heev, yog li feem ntau cov khoom siv hlau thiab cable yuav tsum ntsuas cov rwb thaiv tsev. tsis kam ua haujlwm.
Lub rwb thaiv tsev tsis kam ntawm cov khoom feem ntau yog nyob ntawm cov khoom siv rwb thaiv tsev uas tau xaiv, tab sis cov txheej txheem theem muaj kev cuam tshuam zoo rau cov rwb thaiv tsev. Yog li ntawd, lub hom phiaj ntawm kev ntsuas kev tiv thaiv kev tiv thaiv ntawm cov khoom ib txwm ua nyob rau hauv cov chaw ua haujlwm feem ntau yog ib txoj hauv kev los saib xyuas cov khoom zoo thiab cov txheej txheem.
Los ntawm kev ntsuam xyuas cov rwb thaiv tsev tiv thaiv, koj tuaj yeem soj ntsuam ib ntus seb puas muaj cov kab hluav taws xob hluav taws xob cuam tshuam los ntawm kev ya raws, kev laus, av thiab qhov tsis xws luag hauv zos, thiab tshawb xyuas qhov tsis xws luag hauv qhov ntsuas hluav taws xob. Rau cov roj hmab thiab cov yas insulated fais fab cables, cov rwb thaiv tsev tiv thaiv ntawm lub plhaub sab nraud thiab cov hlua sab hauv ntawm cov hlua tuaj yeem raug kuaj xyuas seb lub plhaub sab nraud thiab cov hlua sab hauv puas muaj dej seepage.
