ʻO ke kaula Jiapu e haʻi iā ʻoe i nā kumu maʻamau o nā pilikia uwea mana.Hiki ke hoʻokaʻawale ʻia nā ʻano hewa o ke kelepona i ka grounding, ka pōkole pōkole, ka wehe ʻana o nā ʻano nui ʻekolu o nā ʻano hewa penei:
He ʻāpana o ka uwea kumu i haki a i ʻole ka uwea naha ʻia he nui
I ka hoʻokolohua hoʻohui uea conductor, ke kūʻē ʻana o ke kaula conductor insulation a me nā mea e pili ana i ka laina, akā i ka nānā ʻana i kahi pae a i ʻole nā ʻāpana he nui ʻaʻole hiki ke hoʻopili ʻia, a laila kahi ʻāpana o ka uea koʻikoʻi a i ʻole nā haʻihaʻi he nui.
ʻEkolu-core cable hoʻokahi a ʻelua paha kumu kumu
ʻEkolu-core cable core a i ʻole ʻelua mau mea hoʻokele kumu me ka hoʻāʻo ʻana i ka papa ʻaina hoʻoluliluli ʻana ma waho o ka pilina, a laila hoʻokahi a i ʻole ʻelua kumu i ke kelepona pale ʻana i ka lepo.Inā ʻoi aku ka haʻahaʻa o ke kumu a me ke kumu ma waena o ka noho ʻana o ka insulation ma mua o ka waiwai maʻamau ma mua o ka waiwai o kēia waiwai kūʻē insulation ʻoi aku ka kiʻekiʻe ma mua o 1000 ohms i kapa ʻia ʻo ke kumu kūʻē kiʻekiʻe;ʻO ka mea ʻē aʻe, he haʻahaʻa haʻahaʻa haʻahaʻa kumu.ʻO kēia mau hewa ʻelua i kapa ʻia ʻo ia nā hewa i hoʻokaʻawale ʻia a i hoʻopaʻa ʻia.
ʻEkolu ʻāpana kumu pōkole pōkole
ʻO ka nui o ka pale ʻana o ka honua pōkole ʻo ia ke kaula o ka ʻike kuhi hewa ʻekolu-phase kumu.Aia ʻelua ʻano o ka hewa pōkole: haʻahaʻa haʻahaʻa pōkole-kaapuni hewa, kiʻekiʻe kūʻē pōkole-kaapuni hewa.I ka wā o ka ekolu-phase kumu pōkole-kaapuni, emi ma mua o 1000 ohms o ka honua kū'ē i haʻahaʻa kū'ē pōkole-kaapuni hewa, ma ka mea 'ē aʻe, he kiʻekiʻe kū'ē pōkole-kaapuni hewa.
ʻIkepili kumu:
ʻO ka mua: pōʻino waho
ʻO nā pilikia kelepona i ka pōʻino o waho ke kumu maʻamau o ka pilikia.Ua pōʻino ke kaula e nā mana o waho i ka wā e hiki mai ana e hōʻike i kahi wahi nui o ka pau ʻole o ka mana.No ka laʻana, ke kaʻina hana hana pipeline ma lalo o ka honua, ke kaula no ka mea ʻoi aku ka nui o ka huki ʻana o ka mīkini hana a huki ʻia;ka hoʻokuʻu ʻana i ke kaula, ka papa pale ma muli o ka piʻi nui ʻana o ke kaula a me ka pōʻino;ʻoki kaula ʻili i ka ʻoki nui a me nā hōʻailona pahi hohonu loa.ʻO kēia mau mea waho pololei e hana i kekahi pōʻino i ke kaula.
ʻO ka lua: ka hoʻomaʻemaʻe insulation
ʻAʻole i hoʻomaʻemaʻe ʻia ke kaʻina hana uea e alakaʻi i ka papa pale o ke kaula i haki;ʻAʻole ʻo ka hoʻopaʻa ʻana i nā ami kaula uwea;lima pale kaula i loko o ke kaula i hoʻohana ʻia e ka mea i hou ʻia a i ʻole i ʻeha ʻia paha.ʻO kēia nā kumu nui o ka maʻemaʻe insulation cable.I kēia manawa, hāʻule ka pale insulation, piʻi ka nui o kēia manawa, hoʻoulu i nā pilikia mana.
ʻEkolu: ʻino kemika
ʻO ka hana lōʻihi o kēia manawa e hoʻokuʻu i ka insulation cable i ka wela nui.Inā lōʻihi ka hana ʻana o ka insulation cable i loko o kahi ʻano kemika maikaʻi ʻole e hoʻololi i kāna mau waiwai kino, i hiki ai i ka ʻelemakule o ka insulation cable a nalowale ka hopena, e kū mai nā pilikia mana.
ʻEhā: ka lōʻihi o ka overload hana
ʻO ka hana kiʻekiʻe o ka wā lōʻihi i kēia manawa i ke kaiapuni, inā he haumia a ʻelemakule paha ka laina insulation layer, i hui pū ʻia me nā mea o waho e like me ka uila a me nā mea ʻē aʻe ma luna o ka hopena uila, hiki i ka overloading ka nui o ka wela, he mea maʻalahi loa ia e hōʻike i nā pilikia kelepona. .
Ka manawa hoʻouna: ʻOkakopa-10-2023