Lapa pale pale conductor (i kapa ʻia hoʻi ka papa pale i loko, ʻāpana semi-conductive i loko)
ʻO ka papa pale pale conductor he papa non-metallic i hoʻokuʻu ʻia ma luna o ka conductor uwea, ʻo ia ka equipotential me ka conductor a loaʻa ka nui resistivity o 100 ~ 1000Ω•m.Equipotential me ka conductor.
ʻO ka mea maʻamau, ʻaʻohe papa pale conductor nā kaula uila haʻahaʻa o 3kV a ma lalo, a pono e loaʻa i nā kaula waena a kiʻekiʻe o 6kV a ʻoi aku kahi papa pale conductor.
ʻO nā hana nui o ka papa pale pale conductor: hoʻopau i ka unevenness o ka conductor surface;hoʻopau i ka hopena hopena o ka ʻili conductor;hoʻopau i nā pores ma waena o ka conductor a me ka insulation;e hana i ka conductor a me ka insulation ma kahi pili pili;hoʻomaikaʻi i ka māhele uila a puni ka conductor;no kea-pili uwea conductor shielding layer, ia no hoi i ka hana o ka inhibiting ka ulu ana o ka uila laau a me ka wela pale.
ʻĀpana hoʻokaʻawale (i kapa ʻia ʻo ka insulation nui)
ʻO ka insulation nui o ke kaula ka hana kiko'ī o ka paleʻana i ka voltage pūnaewele.I ka wā o ke ola lawelawe o ke kaula, pono ia e kū i ka volta helu a me ka overvoltage i ka wā o ka pau ʻana o ka ʻōnaehana no ka manawa lōʻihi, ka uila uila uila, i mea e hōʻoia ai ʻaʻohe pili a i ʻole phase-to-phase breakdown pōkole pōkole ma lalo o ke kūlana hoʻomehana hana.No laila, ʻo ka mea insulation nui ke kī i ka maikaʻi o ke kaula.
ʻO ka polyethylene cross-linked he mea hoʻokaʻawale maikaʻi, i hoʻohana nui ʻia i kēia manawa.ʻO kona waihoʻoluʻu he polū-keʻokeʻo a translucent.ʻO kona mau hiʻohiʻona: ke kūpaʻa insulation kiʻekiʻe;hiki iā ia ke pale i ka ikaika o ka hoʻohaʻahaʻa ʻana i ka mana kiʻekiʻe a me ka pulse uila;haʻahaʻa dielectric poho tangent;mau waiwai kemika paʻa;maikaʻi ke kūpaʻa wela, lōʻihi e ʻae ʻia ka mahana hana o 90 ° C;nā waiwai mechanical maikaʻi, ka hana maʻalahi a me ke kaʻina hana.
Lapa pale pale insulation (i kapa ʻia hoʻi ka papa pale o waho, ka papa semi-conductive waho)
ʻO ka ʻāpana pale insulation kahi ʻāpana non-metallic i hoʻokuʻu ʻia ma ka insulation nui o ke kaula.ʻO kāna mea he mea hoʻohui keʻa me nā waiwai semi-conductive a me ka resistivity volume o 500~1000Ω•m.He equipotential me ka pale kahua.
ʻO ka mea maʻamau, ʻaʻohe ʻano pale pale i nā kaula haʻahaʻa haʻahaʻa o 3kV a ma lalo, a pono e loaʻa i nā kaula waena a me ke kiʻekiʻe-voltage o 6kV a ma luna aʻe he papa pale pale.
ʻO ke kuleana o ka pale pale insulation: ka hoʻololi ma waena o ka insulation nui o ke kaula a me ka pale metala lepo, i pili pono lākou, e hoʻopau i ke āpau ma waena o ka insulation a me ka conductor grounding;hoʻopau i ka hopena hopena ma ka ʻili o ka lipine keleawe lepo;e hoʻomaikaʻi i ka māhele uila a puni ka ʻili insulation.
Hoʻokaʻawale ʻia ka pale insulation i nā ʻano wehe a me nā ʻano ʻole e like me ke kaʻina hana.No nā kaula uila uila, hoʻohana ʻia ke ʻano wehe ʻia no 35kV a ma lalo.He maikaʻi ka hoʻopili ʻana o ka pale insulation hiki ke wehe ʻia, ʻaʻohe mea semi-conductive e koe ma hope o ka wehe ʻana.Hoʻohana ʻia ke ʻano non-strippable no 110kV a ma luna.ʻO ka papa pale pale ʻole i hui pū ʻia me ka insulation nui, a ʻoi aku ka kiʻekiʻe o ke kaʻina hana.
Papa pale metala
Hoʻopili ʻia ka ʻāpana pale metala ma waho o ka pale pale insulation.Hoʻohana maʻamau ka papa pale metala i ka lipine keleawe a i ʻole uea keleawe.He hana koʻikoʻi ia e kaupalena ana i ke kahua uila i loko o ke kaula a pale i ka palekana pilikino.ʻO ia hoʻi kahi papa pale e hoʻomalu i ke kaula mai ka hoʻopili uila waho.
Ke loaʻa ka hewa kumu a i ʻole pōkole i loko o ka ʻōnaehana, ʻo ka papa pale metala ke ala no ke au o ka honua.Pono e helu ʻia a hoʻoholo ʻia kona ʻāpana cross-sectional e like me ke ʻano o ka hiki ʻana o ka ʻōnaehana pōkole a me ke ʻano kumu kumu kumu kūʻokoʻa.ʻO ka maʻamau, ʻo ka ʻāpana cross-sectional o ka papa pale i helu ʻia no kahi ʻōnaehana 10kV e ʻōlelo ʻia ʻaʻole i emi ma lalo o 25 square millimeters.
Ma nā laina uwea o 110kV a ma luna aʻe, ua haku ʻia ka papa pale metala me kahi puʻu metala, nona nā hana pale uila a me nā hana hoʻopaʻa wai, a he mau hana hoʻomalu mechanical.
Hoʻohana maʻamau ka mea a me ke ʻano o ka pahu metala i ka pahu alumini corrugated;puʻu keleawe corrugated;puʻu kila kuhili ʻole;ʻO ka pahu alakaʻi, a me nā mea'ē aʻe, aia kahi hui pū, kahi hale kahi i hoʻopiliʻia ai ka pahu alumini i ka PVC a me ka PE, i hoʻohana nuiʻia i nā huahana Europa a meʻAmelika.
Laʻau pale
Hoʻopili ʻia kahi ʻāpana pale kila a puni ka ʻili o loko, me ka hoʻohana maʻamau i ka pale kila galvanized ʻelua.ʻO kāna hana ʻo ia ka pale ʻana i loko o ke kaula a pale i nā mana mechanical waho e hōʻino i ke kaula i ka wā o ke kūkulu ʻana a me ka hana.Loaʻa iā ia ka hana o ka pale honua.
ʻO ka papa pale kaua he mauʻano likeʻole, e like me ke kapa kila kila, ka pale kila kila, ka pale kaua non-metal, a me nā mea'ē aʻe, i hoʻohanaʻia no nā hale kaula kūikawā.
Ka manawa hoʻouna: Iune-28-2024
