Ke koho ʻana i kahi kūponokaapuni kaapuniPono ka loiloi piha ʻana i nā ʻāpana kaapuni, nā hiʻohiʻona ukana, ka hoʻonohonoho ʻana, a me nā koi palekana. ʻO nā manaʻo koʻikoʻi e hōʻoiaʻiʻo ana i ka volta helu e pili ana i ka volta ʻōnaehana, ʻoi aku ka nui o ka manawa i helu ʻia ma mua o ka ukana o kēia manawa akā ʻoi aku ka liʻiliʻi ma mua o ka hiki ke lawe i kēia manawa, a ʻoi aku ka kiʻekiʻe o ka haʻihaʻi (Icu) ma mua o ka manawa pōkole i manaʻo ʻia.
Koho ʻana o ke ʻano kī
Voltage i helu ʻia: Pono ʻo ≥ ka volta helu helu o ka laina (e laʻa, hoʻohana mau ʻia i nā hale 220V/380V). Pono e kūlike ka volta hoʻokuʻu undervoltage me ka voltage ʻōnaehana.
Helu ʻia i kēia manawa:
E helu i ke au hana nui loa o ka haawe (Ib). E koho akaapuni kaapunime kahi au i helu ʻia (In) e kūpono ana i kēia mau ʻano: Ib < In ≤ conductor palekana hiki ke lawe i kēia manawa (e laʻa, 6mm² uea keleawe ka mana lawe o kēia manawa ma kahi o 40A, koho i kahi ≤40A kaapuni kaapuni).
Pono ka hana derted ma nā wahi wela kiʻekiʻe (> 40 ℃).
Ka hikiwawe (Icu):
Pono e ʻoi aku ka nui ma mua o ka mana o ka laina pōkole i manaʻo ʻia (Ik), hiki ke helu ʻia me ka hoʻohana ʻana i nā ʻōkuhi a i ʻole ke kuhikuhi ʻana i nā papa (e laʻa, no ka mana transformer o 1600kVA, Ik≈38.5kA). 3
Hoʻomuakaapuni kaapunime kahi Icu ≥ 50kA; no nā noi noho, ≥ 6kA lawa.
Hoʻohana mākou i nā kuki e hāʻawi iā ʻoe i kahi ʻike mākaʻikaʻi ʻoi aku ka maikaʻi, ka nānā ʻana i ka hele ʻana o ka pūnaewele a me ka pilikino. Ma ka hoʻohana ʻana i kēia pūnaewele, ʻae ʻoe i kā mākou hoʻohana ʻana i nā kuki.Kulekele pilikino
