Qhov sib txawv ntawm cov khoom siv cable txias-shrinkable thiab cov khoom siv cable cua sov-shrinkable yog dab tsi?

1, Lub foob

Vim tias feem ntau ntawm cov khoom siv cable nyob rau sab nraum zoov, ncaj qha faus thiab lwm qhov chaw, dej tsis nkag thiab noo noo tau dhau los ua ib qho tseem ceeb los xyuas kom meej tias muaj kev nyab xeeb ntawm cov khoom siv cable, thiab nws txoj haujlwm sealing thiab txoj kev yuav tsum tau xav txog.

Tam sim no, feem ntau muaj ob txoj kev sealing:

Ib qho yog kaw nrog asphalt lossis epoxy resin, cov txheej txheem yog chaotic, nyuaj rau tswj, thiab tsis zoo rau kev tiv thaiv.

Lwm txoj kev tshiab yog siv cov sealant uas muaj zog heev, uas yooj yim rau kev ua haujlwm, txhim khu kev qha hauv kev ua haujlwm, thiab yooj yim los tiv thaiv cov khoom siv, uas tau dhau los ua qhov tseem ceeb ntawm kev siv. Yuav kom siv txoj kev tshiab no, peb yuav tsum xub xav txog qhov ua haujlwm ntawm cov sealant. Vim tias qhov zoo thiab kev ua haujlwm ntawm cov sealant cuam tshuam ncaj qha rau qhov ua haujlwm ntawm kev sib koom ua ke.

Cov khoom siv hluav taws xob uas txias thiab ntsws tau tag nrho yog cov khoom siv hluav taws xob uas muaj zog heev, uas yog, siv cov roj hmab silicone uas muaj zog lossis khov kho, nthuav dav ua ntej hauv lub Hoobkas, muab cov yas thiab cov hlua khi, thiab tshem cov hlua khi mus rau qhov kev taw qhia uas tau teem tseg rau ntawm qhov chaw kom luv dua ntuj.

Hom kev txawj no yog ib txoj kev siv tshuab ua kom lub cable ntsws txias, thiab hom khoom siv no yog ib qho khoom siv cable ntsws txias. Yog li ntawd, cov khoom siv cable ntsws txias no muaj qhov elasticity zoo heev, uas tuaj yeem tiv thaiv lub cable kom tsis txhob nthuav dav thiab sib cog lus vim yog qhov chaw tsis sib xws thiab qhov hnyav ua haujlwm tsis sib xws ntawm lub cable, uas yog, qhov chaw rwb thaiv tsev uas tsim los ntawm kev ua pa ntawm lub cable.

Qhov tsis zoo ntawm cov khoom siv hluav taws xob uas ua rau cua sov ntsws tau yog tias lawv tsis yoog tau thiab tsis tuaj yeem ua pa nrog lub cable.

Yog li ntawd, cov khoom siv cable txias uas tuaj yeem ntswj tau tag nrho yog qhov kev xaiv zoo tshaj plaws rau thaj chaw uas muaj qhov sib txawv ntawm qhov kub thiab txias thiab muaj kev cuam tshuam loj rau huab cua thiab ib puag ncig!

2, Kev rwb thaiv tsev

Cov kev cai rwb thaiv tsev ntawm cov khoom siv cable yuav tsum ua tau raws li qhov rwb thaiv tsev ntawm cov theem thiab cov rwb thaiv tsev sib txawv.

Cov khoom siv rwb thaiv tsev yog cov roj hmab silicon thiab cov khoom siv rwb thaiv tsev uas kub-ntsws. Feem ntau, lub luag haujlwm rwb thaiv tsev kuj yog raws li lub hom phiaj rwb thaiv tsev ntawm cov khoom siv, thiab qhov tuab ntawm cov khoom sib xyaw ua ke ua tau raws li qhov yuav tsum tau ua.

Cov khoom siv cable txias-shrinkable, qhov ntsuas kev ua haujlwm dav dav yog 24kV / hli, thiab qhov tuab ua haujlwm npaj yuav tsum ua tau raws li qhov tuab ntawm 12 hli, uas tuaj yeem tiv taus qhov kev sim ntawm xob laim poob siab thiab overvoltage.

Cov khoom siv hluav taws xob uas ua rau cov xov hluav taws xob kub-ntsws yog ua los ntawm ntau yam khoom sib xyaw thiab muaj lub zog ua kom cov xov hluav taws xob kub-ntsws tom qab ua tiav kev ua kom sov. Lub ntsuas rwb thaiv tsev ntawm lub tshuab yog 1.8-2.0kV / hli, thiab qhov tuab uas tau npaj tseg yog 3-4 hli tuab dua li cov roj hmab silicone. Kev rwb thaiv tsev sib piv yog qhov deb nyab xeeb kom tiv thaiv tus nqi los ntawm kev nce ntawm lub peev xwm siab mus rau lub peev xwm qis.

Cov khoom siv roj hmab silicone txias-shrinkable muaj qhov elasticity zoo heev. Tsuav yog qhov kev npaj tsim nyog, nws lub zog resilience tuaj yeem txaus siab rau lub zog tuav. Txawm hais tias qhov chaw ib puag ncig yog thermal expansion lossis txias contraction, cov khoom siv cable txias-shrinkable ua kom ntseeg tau tias cov cable raug khi kom nruj kom tiv thaiv kev nqus dej noo thiab xyuas kom meej tias muaj kev nyab xeeb sab hauv creepage deb. Tib lub sijhawm, theoretically, qhov nce toj sab hauv ntawm txhua cov khoom siv cable txias-shrinkable tsuas yog 70 hli, tab sis rau kev nyab xeeb, qhov kev npaj ua haujlwm deb tseem yog 90 hli.

Qhov kub luv ntawm cov khoom siv hluav taws xob cua sov yog 100 ℃ -140 ℃. Tsuas yog hauv cov khoom siv thiaj li ua tau raws li nws cov xwm txheej luv. Thaum qhov kub qis, vim tias qhov coefficient ntawm thermal expansion ntawm lub cable txawv ntawm cov khoom siv cua sov-shrinkable, qhov chaw ib puag ncig hauv qab 80 ° C yuav delaminate, yog li cov kab nrib pleb yuav tshwm sim, cia dej thiab noo noo nkag mus rau hauv qab kev ua pa, yog li ua rau lub rwb thaiv tsev ntawm lub cev puas tsuaj, Qhov no yog qhov tsis zoo me me ntawm cov khoom siv cua sov shrinkable.

3, Lub zog hluav taws xob

Thaum ua cov khoom siv hluav taws xob ntawm cov khoom siv cable txias-shrinkable, ntau txoj hauv kev siv los hloov cov hluav taws xob dispersion los ntawm kev siv cov cones kev ntxhov siab, thiab qee cov duab thiab qhov tseeb R-viewpoint processing raug saws. Txoj kev no yooj yim rau kev tswj hwm thiab kuaj xyuas thiab tuaj yeem ua tiav hauv lub Hoobkas.

Txoj kev kho hluav taws xob ntawm cov khoom siv hluav taws xob uas ua rau cov khoom siv hluav taws xob shrinkable yog hloov qhov kev faib hluav taws xob los ntawm cov kab ncaj. Nws yog qhov tsim nyog los vam khom ob qho tseem ceeb:

Qhov ntim tsis kam, 108-11Ω.

Tus dielectric tas mus li yog 25.

Vim yog cov txheej txheem tsim khoom tsis zoo thiab kev hloov pauv loj hauv cov yam ntxwv ib puag ncig, nws nyuaj rau tswj qhov ruaj khov ntawm cov kev teeb tsa, uas yuav cuam tshuam rau qhov zoo ntawm cov khoom.

Yog li ntawd, cov khoom siv cable txias-shrinkable thiab cov khoom siv cable cua sov-shrinkable yog qhov sib txawv kiag li hauv cov txheej txheem nws tus kheej. Ua haujlwm nyob rau hauv cov xwm txheej ib txwm muaj, ob qho tib si ua tau raws li cov kev cai kev nyab xeeb. Txawm li cas los xij, thaum ib puag ncig hloov pauv, qhov txias shrinkage yeej muaj txiaj ntsig zoo dua li qhov kub shrinkage. Tau kawg, tus nqi ntawm kev cog lus txias yog siab dua li ntawm kev cog lus cua sov.