Thaum lub hwj chim cable dhau ib qho kev thauj khoom tam sim no, nws yuav ua kom sov. Raws li cov load tam sim no nce, qhov kub ntawm lub cable yuav siab dua. Yog tias nws tsis raug daws raws sijhawm, cov txiaj ntsig tuaj yeem xav txog. Piv txwv li, rau polyvinyl chloride (PVC) cables, qhov siab tshaj ntawm cov tub ntxhais kub yog 70 degrees, thiab qhov kub ntawm qhov chaw yuav yog 5 txog 10 degrees. Yog li ntawd, qhov kub thiab txias ntawm lub cable yog qhov tseem ceeb hauv qab 60 degrees. Los ntawm qhov kev xav ntawm kev saib xyuas lub zog, ntawm chav kawm, qhov kub thiab txias, qhov zoo dua.
Yog vim li cas rau cua sov ntawm lub hwj chim cables thaum lub sij hawm ua hauj lwm yog raws li nram no:
1. Lub cable conductor kuj tsis ua raws li qhov yuav tsum tau ua, ua rau lub cable ua kom muaj cua sov thaum lub sijhawm ua haujlwm.
2. Kev xaiv tsis raug ntawm cov cables yuav ua rau tus neeg xyuas pib hla- ntu ntawm cov cables uas siv me me dhau, ua rau lub sijhawm ua haujlwm ntau dhau. Tom qab siv sij hawm ntev -, cov cua kub thiab cua kub dissipation ntawm cov cables tsis sib npaug, ua rau muaj hluav taws kub.
3. The cables are arranged too densely during installation, the ventilation and heat dissipation effect is not good, or the cables are too close to other heat sources, which affects the normal heat dissipation of the cables, and may also cause the cables to generate heat during operation.
4. Lub tshuab tsim kev sib koom ua ke tsis zoo, thiab cov crimping tsis nruj, uas ua rau kev sib cuag ntawm cov sib koom ua ke loj heev, thiab tseem ua rau lub cable ua kom sov.
5. Lub rwb thaiv tsev kev ua tau zoo ntawm cov theem ntawm cov cable tsis zoo, ua rau muaj kev tiv thaiv me me thiab cua sov thaum ua haujlwm.
6. Ib feem ntawm cov ntaub thaiv npog ntawm lub armored cable yog puas, uas yuav maj mam rhuav tshem cov rwb thaiv tsev kev ua tau zoo tom qab nkag mus rau hauv dej, ua rau cov rwb thaiv tsev tiv thaiv maj mam txo, thiab tseem yuav ua rau cua sov thaum lub sij hawm ua haujlwm ntawm lub cable.
Tom qab lub zog hluav taws xob tsim hluav taws xob tsim hluav taws xob, yog tias tsis pom qhov ua rau thiab qhov ua txhaum raug tshem tawm hauv lub sijhawm, lub rwb thaiv tsev thermal breakdown yuav tshwm sim tom qab lub cable txuas ntxiv mus tas li. Nws yuav ua rau luv luv -circuit tripping phenomenon ntawm theem ntawm cov cable, uas yuav ua rau hluav taws kub heev.
