Hlau thiab cables yog ib chav loj ntawm cov khoom siv hluav taws xob siv los xa hluav taws xob, xa cov ntaub ntawv thiab paub txog kev hloov pauv ntawm hluav taws xob hluav taws xob. Cov khoom lag luam tsis zoo yuav faus ntau qhov kev phom sij zais rau kev ua haujlwm ntawm lub zog ib txwm muaj.
Yog li dab tsi yog ib tug substandardkab thiab kab?
1. Lub cim tsis tsim nyog. Kev kos npe yog txoj hauv kev tseem ceeb rau cov xov hlau thiab cables txhawm rau txheeb xyuas cov ntaub ntawv tseem ceeb ntawm cov khoom. Raws li tus qauv, cov ntsiab lus tseem ceeb ntawm lub cim yog cov qauv khoom, specification, tus qauv tooj, lub Hoobkas lub npe, qhov chaw ntawm lub hauv paus chiv keeb, thiab lwm yam nyob rau hauv ib tug tej yam cim lub sij hawm. Thaum lub cim tsis tsim nyog, nws yuav ua rau Cov neeg ua haujlwm tsim kho' kev txheeb xyuas qhov yuam kev tuaj yeem ua rau hluav taws xob raug mob hnyav.
2. Cov qauv loj yog tsis tsim nyog. Qhov teeb meem tseem ceeb ntawm tus qauv loj yog lub thickness ntawm lub sheath thiab lub rwb thaiv tsev thickness. Thaum lub sheath thiab rwb thaiv tsev thickness ntawm lub cable tsis yog raws li tus qauv, lub zog tiv thaiv lub zog ntawm cov hlau thiab cable yuav raug txo kom tsawg, uas yuav txo nws cov kev pab cuam lub neej, thiab nyob rau hauv mob hnyav tej zaum yuav ua rau ib tug tawg. Lub rwb thaiv tsev (sheath) txheej tsis muab kev tiv thaiv ib txwm, ua rau hluav taws xob luv luv thiab hluav taws kub.
3. Lub zog tensile thiab elongation ntawm sheathed rwb thaiv tsev ua ntej kev laus yog tsis tsim nyog. Qhov tsis tsim nyog tensile lub zog thiab elongation ntawm rwb thaiv tsev sheath ua ntej aging ncaj qha ua rau lub neej ua hauj lwm ntawm cov hlau thiab cable, thiab thaum lub sij hawm tsim kho los yog nyob rau hauv ib tug ntev lub sij hawm energization thiab kub ib puag ncig, lub rwb thaiv tsev yog yooj yim tawg, ua rau ib tug nyob conductor. raug nthuav tawm, muaj kev pheej hmoo ntawm hluav taws xob luv luv-circuit. Qhov laj thawj tseem ceeb ntawm nws qhov kev tsis tsim nyog yog kev siv cov khoom siv rov ua dua los txo cov nqi khoom, thiab qhov thib ob yog cov lag luam me uas tsis tsim nyog rau kev tsim khoom.
4. Tus neeg xyuas pib kuj tsis tsim nyog. Tus neeg xyuas pib tsis kam yog qhov tseem ceeb tshaj plaws rau kev ntsuam xyuas seb cov khoom siv ntawm tus neeg xyuas pib thiab cov ntu ntawm cov xov hlau thiab cov kab sib ntsib. Thaum tus neeg xyuas pib tsis kam tshaj tus qauv, nws nce qhov poob thaum tam sim no dhau los ntawm txoj kab thiab ua rau nws cov cua sov hnyav dua. Lub ntsiab yog vim li cas rau qhov tsis tsim nyog tus neeg xyuas pib yog tias txhawm rau txo tus nqi, lub tuam txhab txo qis cov khoom siv tooj liab uas suav nrog 80% ntawm tus nqi raw khoom, xws li txo qhov ntu ntu ntawm tus neeg xyuas pib lossis siv cov tooj liab rov qab nrog ntau dhau. impurities, uas ua rau cov neeg xyuas pib tsis kam ntawm covkab thiab kabkom loj. Tshaj li tus qauv, ntxiv rau qhov yooj yim ua rau hluav taws kub thaum siv, tseem yuav ua kom cov laus ntawm cov txheej insulating npog cov hlau.
Nyob rau hauv tus txheej txheem ntawm kev yuav khoom thiab cables, cov neeg siv khoom yuav tsum xyuam xim rau cov khoom hauv qab no:
Ua ntej, soj ntsuam cov tsos ntawm cov hlau. Cov txheej insulating (sheath) ntawm cov khoom tsim nyog yog mos, tawv thiab stretchable, thiab txheej txheej yog nruj, du thiab tsis muaj roughness. Yog hais tias cov yas qhwv cov hlau yog yooj yim tev tawm, muaj teeb meem ntawm cov yas tsis txaus.
Qhov thib ob, nws nyob ntawm qhov hla ntawm cov hlau. Qhov saum npoo ntawm cov tub ntxhais tooj liab lossis aluminium core ntawm cov khoom tsim nyog yuav tsum muaj cov xim hlau, thiab cov xim dub lossis dawb txhuas qhia tias nws tau oxidized.
Thib peb, xyuam xim rau kev kuaj xyuas daim ntawv pov thawj zoo thaum yuav cov xov hlau. Yog tias qhov zoo ntawm cov hlau yog tsim nyog, ces qhov zoo ntawm cov hlau yuav tsum tau kuaj xyuas, thiab yuav tsis muaj teeb meem loj.
