Analysis ntawm qhov ua rau ntawmhlau thiab cable rwb thaiv tsevkev puas tsuaj, kev puas tsuaj txhais tau hais tias tus thawj rwb thaiv tsev ua haujlwm ntawm cov kab hluav taws xob rwb thaiv tsev yog puas vim yog kev puas tsuaj rau sab nraud, (extrusion, xob laim tawm tsam, thiab lwm yam), kev laus ntawm cov ntaub ntawv rwb thaiv tsev, thiab lwm yam, thiab cov khoom siv rwb thaiv tsev qub ploj lawm. Thaum lub sij hawm ua hauj lwm ntawm lub cable, cov tub ntxhais hlau mus rau cov tub ntxhais hlau, cov tub ntxhais hlau mus rau sab nraud tiv thaiv steel sawb ntawm lub cable thiab tawm mus rau hauv av yuav ua txhaum ntawm grounding luv luv Circuit Court.
Muaj ob peb lub laj thawj rauhlau thiab cable rwb thaiv tsevkev tawg.
1. Kev puas tsuaj
Vim tias cov khoom hnyav tsoo lub cable, lub excavator raug mob lub cable. Thaum lub cable yog pw, lub cable yog khoov heev, uas yuav ua rau lub rwb thaiv tsev puas. Thaum lub sij hawm xa khoom, lub cable yog nruj heev thiab cov rwb thaiv tsev thiab txheej tiv thaiv puas. , uas yuav ua kom puas lub rwb thaiv tsev thiab txawm tawg lub cable.
Txhawm rau tiv thaiv kev puas tsuaj ntawm cov kab hluav taws xob, cov kab hluav taws xob siv hluav taws xob tuaj yeem siv tau. Yog tias cov kab txuas tau muab tso rau ntawm phab ntsa, lawv yuav tsum tau npog. Lub faus yuav tsum tau cim nrog cov cim pom tseeb, thiab cov av qiv nyob ze ntawm cov kab hluav taws xob yuav tsum tiv thaiv lub sijhawm.
2. Kev tsim kho tsis raug
Vim yog txoj kev tsim kho tsis zoo thiab cov khoom siv tsis zoo ntawm cov khoom siv, cov kev sib txuas tsis muaj zog ntawm lub taub hau cable thiab qhov chaw ua haujlwm tsis zoo, ua rau cov txheej txheem insulating tawg.
Txhawm rau tiv thaiv qhov tshwm sim no, kev txhim kho zoo ntawm lub taub hau cable yuav tsum tau txhim kho. Thaum lub sij hawm tsim thiab installation ntawm lub taub hau cable, lub hnab insulating yuav tsum nruj thiab tsis muaj qhov chaw qhib yuav tsum muaj. Ua ntej epoxy resin thiab quartz hmoov, nws yuav tsum nruj me ntsis kom qhuav kom tsis txhob muaj cua npuas thiab ya raws los ntawm kev nkag mus rau lub taub hau cable, thiab kev kho rwb thaiv tsev ntawm ntug ntawm cov hlau lead sheath yuav tsum tau ntxiv dag zog.
3. rwb thaiv tsev damp
Vim yog cov txheej txheem kev tsim kho tsis zoo ntawm lub taub hau cable, noo noo nkag mus rau sab hauv ntawm lub cable, lossis cov ntaub qhwv sab hauv ntawm lub cable puas lawm thiab ya raws nkag mus. Cov kab hlau lead-clad tau muab tso rau ze ntawm qhov chaw ntawm av qeeg, thiab nws tau qaug zog thiab tawg vim kev co mus ntev. Lub cable sheath yog corroded thiab voids tshwm sim. Muaj cov qhov me me los yog cov kab nrib pleb hauv cov khoom siv lead ua vim qhov kev tsim khoom tsis zoo.
Nyob rau hauv qhov kev pom ntawm cov xwm txheej no, kev tiv thaiv ntawm txheej txheej ntawm lub cable yuav tsum tau ntxiv dag zog, thiab ib txheej ntawm asphalt yuav tsum tau pleev xim rau ntawm lub tsho sab nrauv tsis tu ncua.
4. Tshaj dhau
Cov txheej insulating yog tawg vim atmospheric overvoltage los yog internal overvoltage, tshwj xeeb tshaj yog nyob rau hauv lub overvoltage ntawm lub system yuav ua rau ntau cables yuav tawg nyob rau tib lub sij hawm.
Nyob rau hauv no hais txog, xob laim ntes yuav tsum tau ntsia los txhim kho cov txheej txheem ntawm kev tiv thaiv tsis siv neeg lub cev.
5. rwb thaiv tsev laus
Nyob rau hauv lub sij hawm ntev lub lag luam ntawm lub cable, vim tsis zoo cua sov dissipation los yog overload, hluav taws xob thiab mechanical zog ntawm cov khoom insulating yog deteriorated, thiab cov insulating txheej yuav nkig los yog tawg.
Yog tias muaj, qhov kev tiv thaiv tiv thaiv qhov ntsuas hluav taws xob ntawm cov khoom siv hluav taws xob yuav tsum tau ua raws sij hawm, thiab nws pom tias cov hluav taws xob rwb thaiv tsev tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm kev ua haujlwm nyab xeeb, thiab yuav tsum tau hloov lub cable tshiab.
