Lub luag haujlwm ntawm kev tiv thaiv xaim thiab cable yog dab tsi?
Cov txheej sab nrauv tshaj plaws ntawm xaim thiab cable feem ntau yog roj hmab lossis roj hmab sib xyaw ua ke. Lub luag haujlwm ntawm txheej txheej no yog txhawm rau tiv thaiv thiab tiv thaiv lub cable los ntawm kev puas tsuaj.
Cov kab hluav taws xob tau muab faib ua hluav taws xob hluav taws xob muaj hluav taws xob thiab cov hluav taws xob qis. Yog tias lawv muaj hluav taws xob ntau, yuav muaj txheej txheej zoo li cov yas tso rau sab hauv, uas ua haujlwm tiv thaiv rwb thaiv tsev. Hauv cov kab hluav taws xob siab, txheej no yog qhov tseem ceeb tshaj plaws ntawm kev rwb thaiv tsev. Qhov hluav taws xob qis tsis muaj txheej txheej no, thiab tom qab ntawd yuav muaj qee yam zoo li cov hlua qhwv hauv. Qhov no yog txhawm rau txhim kho txhua tus tub ntxhais ntawm txoj kab thiab sau qhov sib txawv hauv nruab nrab.
Raws li rau txheej tiv thaiv, muaj ob kis. Kev ua haujlwm ntawm txheej txheej tiv thaiv kab hluav taws xob yog raws li hauv qab no:
Vim tias qhov tam sim no dhau los ntawm lub hwj chim cable yog qhov loj, qhov sib nqus yuav tsim tawm ib puag ncig tam sim no. Txhawm rau kom tsis txhob cuam tshuam rau lwm yam khoom, lub tshuab hluav taws xob tuaj yeem tiv thaiv kab hauv kab los ntawm kev ntxiv txheej tiv thaiv. Nws tuaj yeem ua lub luag haujlwm ntawm kev tiv thaiv hauv av. Yog tias cov tub ntxhais cable tau puas, qhov xau tam sim no tuaj yeem ntws raws cov txheej tiv thaiv zoo li daim phiaj av, uas ua lub luag haujlwm tiv thaiv kev nyab xeeb. Yog tias nws' tswj cov kab hluav taws xob, nws tsis' tsis ua qhov txawv. Nws' tsuas yog nyob hauv ntau qhov chaw, tshwj xeeb tshaj yog kev tswj hwm kab ke ntawm lub khoos phis tawj, txheej tiv thaiv ntawm no yog siv los tiv thaiv los ntawm kev cuam tshuam sab nraud, vim nws tus kheej tam sim no tsis muaj zog heev, thiab nws ntshai heev sab nraud electromagnetic teb.
Tus qauv cable muaj yim ntu:
1. Lub hom phiaj txoj cai-tsis cim raws li lub hwj chim cable, K yog tswj cable, P yog teeb liab cable;
2.Kev ntsuas kab ntawv -Z roj-impregnated ntawv, X roj hmab, V polyvinyl chloride, YJ hla-txuas polyethylene
3.Cov khoom siv tus lej-tsis cim ua tooj liab, L yog txhuas;
4.Qhov txheej txheej sab hauv-Q ua pob, L txhuas pob, H lub tes tsho roj hmab, V polyvinyl chloride sheath
5.Derived code-D tsis dag, P qhuav rwb thaiv tsev;
6.Qhov txheej tiv thaiv txheej txheej
7.Sqhia cov khoom tshwj xeeb-TH ntub dej tropics, TA qhuav tropics;
