He aha ka Overhead Service Drop Cable?

ʻO nā uwea hoʻokuʻu lawelawe ma luna o nā uwea e hoʻolako i nā laina mana o waho. He ala hoʻoili mana hou lākou ma waena o nā alakaʻi ma luna a me nā kaula lalo, i hoʻomaka i ka noiʻi a me ka hoʻomohala ʻana i nā makahiki 1960.

Hoʻokumu ʻia nā kaula hoʻokuʻu lawelawe ma luna o kahi ʻāpana insulation a me kahi papa pale, e like me ke kaʻina hana o nā kaula i hoʻopili ʻia. ʻOiai ʻoi aku ka maʻalahi o ka hoʻopili ʻana i waho a ʻaʻole ʻoluʻolu, ua hoʻohana nui ʻia lākou i nā wahi i paʻakikī ke kau ʻana i nā kaula ma lalo o ka honua ma muli o ko lākou kiʻekiʻe o ka mana lako hilinaʻi, kūpaʻa, a me ka mālama pono.

Pehea mākou e koho ai i ka overhead service drop cable?

ʻO nā ʻano ʻekolu o nā uwea hoʻokuʻu lawelawe alumini ʻo ka duplex service drop cable, triplex service drop cable, a me quadruplex service drop cable. ʻOkoʻa lākou e like me ka helu o nā conductors a me nā noi maʻamau. E nānā pōkole kākou i ke kuleana o kēlā me kēia.

Hoʻohana ʻia nā kaula hoʻoheheʻe duplex me ʻelua conductors i nā laina mana hoʻokahi-phase no nā noi 120-volt. Hoʻohana pinepine ʻia lākou i nā ʻōnaehana kukui ma waho, me nā kukui alanui. Eia kekahi, hoʻohana pinepine ʻia lākou i ka ʻoihana kūkulu no ka lawelawe manawaleʻa. ʻO ka ʻoiaʻiʻo leʻaleʻa- Ua kapa ʻia ka nui o nā uea duplex overhead ʻAmelika ma muli o nā ʻano ʻīlio, me ka mea hoʻonohonoho, kahu hipa, a me ka chow.

Hoʻohana ʻia nā kaula hoʻokuʻu lawelawe Triplex me ʻekolu conductors e lawe i ka mana mai nā laina pono i nā mea kūʻai aku, ʻo ia hoʻi, i ke poʻo o ka wā. Eia hou, he moʻolelo hoihoi ko American triplex service drop cables i ko lākou inoa. Ua kapa ʻia lākou ma muli o nā ʻano holoholona o ke kai, e like me ka snails, clams, a me nā pāpaʻi. ʻO nā inoa kelepona ʻo Paludina, Valuta, a me Minex.

Hoʻolālā ʻia nā kaula hāʻule lawelawe Quadruplex me ʻehā conductors e hoʻolako i nā laina mana ʻekolu. Hoʻohui lākou i nā mea hoʻololi uila i kau ʻia i ka pou, aia ka hapa nui ma nā kuaʻāina, me nā poʻo lawelawe o ka mea hoʻohana hope. ʻO nā kaula Quadruplex i hala i nā koi o NEC ua kapa ʻia ma hope o nā pua lio, e like me Gelding a me Appaloosa.

Ke kukulu ana i na uwea hoolele lawelawe alumini

ʻOiai ʻokoʻa ke kumu a me ka helu o nā conductors, ua like ke kūkulu ʻana o nā uea lawelawe uila ma luna. ʻO nā alakaʻi o kēia mau kaula i hana ʻia me ka alumini alumini 1350-H19,6201-T81 a i ʻole ACSR.

Loaʻa iā lākou kahi polyethylene XLPE insulation cross-linked e hāʻawi i ka pale nui mai nā pilikia o waho. ʻo ia hoʻi, he kūʻē maikaʻi loa ia i ka makū, ke ʻano o ka wā, a me ka hopena o nā mea kemika. ʻO ka mahana hana o nā kaula alumini ma luna me ka XLPE insulation he 90 degere Celsius. ʻAʻole hiki ke hoʻohana ʻia ka polyethylene insulation ma kahi o ka XLPE insulation. I kēia hihia, hoʻemi ʻia ka mahana hana i 75degrees, kahi mea e noʻonoʻo ai i ka wā e noʻonoʻo ai i kāu papahana uila. He 600 volts ka helu voltage o na uwea lawelawe uwila a pau.

Loaʻa nā uwea hoʻokuʻu lawelawe alumini a pau i ke alakaʻi kūʻokoʻa a i ʻole ka uea ʻelele. ʻO ka pahuhopu o ka alakaʻi ʻelele ʻo ia ke hana i kahi ala kūʻokoʻa no ka uila e pakele ai a pale aku i nā pōʻino, he mea koʻikoʻi i ke kaiapuni o ke kelepona waho. Hiki ke hana ʻia nā uea Messenger i nā mea like ʻole, e like me AAC, ACSR, a i ʻole kekahi ʻano alumini alumini.

Inā makemake ʻoe e loaʻa kahi kūkākūkā e pili ana i nā alakaʻi hoʻokuʻu lawelawe, e ʻoluʻolu e kelepona mai iā mākou.