E like me kā mākou e ʻike ai, nui nā ʻenehana loea e ana i nā papa o nā pā uila a me ke ʻano o ka pale ʻana i ka pale ʻana i kekahi mau mea.ʻO nā helu NEMA a me nā helu IP ʻelua mau ala like ʻole e wehewehe i nā degere o ka pale ʻana i nā mea e like me ka wai a me ka lepo, ʻoiai ke hoʻohana nei lākou i nā ʻano hana like ʻole e hoʻāʻo ai a me nā ʻāpana e wehewehe i ko lākou ʻano pā.He mau ana like laua a elua, aka, he mau okoa ko laua.
ʻO ka manaʻo o NEMA e pili ana i ka National Electrical Manufacturers Association (NEMA) ʻo ia ka hui kālepa nui loa o nā mea hana uila ma Wakinekona DC, ʻAmelika Hui Pū ʻIa.Hoʻopuka ia ma mua o 700 mau kūlana, alakaʻi, a me nā pepa ʻenehana.ʻO ka Marjory o nā maʻamau ka mea no nā pā uila, nā kaʻa a me nā uea magnet, nā plug AC, a me nā pahu.Eia kekahi, ʻaʻole wale nā mea hoʻohui NEMA ma ʻAmelika ʻĀkau akā hoʻohana pū ʻia e nā ʻāina ʻē aʻe.ʻO ka manaʻo ʻo NEMA kahi hui ʻaʻole i komo i ka ʻae a me ka hōʻoia o nā huahana.Hōʻike nā helu NEMA i ka hiki o ka pā paʻa ke kū i kekahi mau kūlana kaiapuni no ka hōʻoia ʻana i ka palekana, kūpono, a me ka hana o nā huahana uila.Hoʻohana ʻokoʻa nā loiloi i nā polokalamu kelepona a hoʻohana mua ʻia i nā pā paʻa.No ka laʻana, e hoʻohana ʻia ka helu NEMA i kahi pahu uila paʻa i kau ʻia ma waho, a i ʻole kahi paʻa paʻa i hoʻohana ʻia e kau i ka wahi hiki ʻole.Ua helu ʻia ka hapa nui o nā pā no ka hoʻohana ʻana i kahi kaiapuni waho e pili ana i ka helu NEMA 4.ʻO nā pae mai NEMA 1 a i ka NEMA 13. Loaʻa i nā helu NEMA (Appendix I) nā ʻano koʻikoʻi koʻikoʻi e kūlike i ka pale ʻana mai ka hau o waho, nā mea ʻino, ka wai ʻaila, ka lepo, ka wai, a me nā mea ʻē aʻe. nā polokalamu kelepona i hoʻohālikelikeʻia me nā mea paʻa.
ʻO ka International Electrotechnical Commission (IEC) kahi hui kūlana honua e hoʻomākaukau a hoʻolaha i nā kūlana honua no nā ʻenehana uila, uila, a me nā ʻenehana pili.Loaʻa i nā kūlana IEC ka nui o nā ʻenehana mai ka hana mana, ka hoʻouna ʻana, a me ka hāʻawi ʻana i nā lako keʻena a me nā mea pono home, semiconductor, nā pā, a me ka ikehu o ka lā, a me nā mea ʻē aʻe. ʻO nā mea i kūpono i kāna mau kūlana honua.ʻO kekahi o nā kūlana kūpono i kapa ʻia ʻo Ingress Protection (IP) Code i wehewehe ʻia e ka IEC maʻamau 60529 e hoʻokaʻawale a helu i ka pae o ka pale i hāʻawi ʻia e nā casings mechanical a me nā pā uila e kūʻē i ka intrusion, ka lepo, ka hoʻopili ʻole ʻia, a me ka wai.He mau helu helu ʻelua.Hōʻike ka huahelu mua i ke kiʻekiʻe o ka pale i hāʻawi ʻia e ka pā i ke komo ʻana i nā ʻāpana pōʻino e like me nā ʻāpana neʻe, a me nā hoʻololi.Eia kekahi, ʻo ka loaʻa ʻana o nā mea paʻa e hōʻike ʻia ma ke ʻano he pae mai 0 a 6. Hōʻike ka helu ʻelua i ke kiʻekiʻe o ka pale i hāʻawi ʻia e ka pā e kūʻē i ke komo ʻana o ka wai e hōʻoia ʻia e ka pae mai 0 a 8. Inā loaʻa. ʻAʻohe koi e kuhikuhi ʻia ma kekahi o kēia mau kahua, e hoʻololi ʻia ka leka X e ka helu pili.
Ma muli o ka ʻike ma luna aʻe, ʻike mākou ʻo ka NEMA a me ka IP ʻelua mau ana pale pa.ʻO ka ʻokoʻa ma waena o nā helu NEMA a me nā helu IP kahi i loaʻa mua i ka pale ʻana i ka hau waho, nā mea ʻino, ka ʻaila immersion, ka lepo, a me ka wai, ʻoiai ʻo ka mea hope wale nō ka pale o ka lepo a me ka wai.ʻO ia hoʻi, uhi ʻia ʻo NEMA i nā kūlana palekana hou aʻe e like me nā mea corrosion i IP.ʻO ia hoʻi, ʻaʻohe hoʻololi pololei ma waena o lākou.Ua māʻona a ʻoi aku paha nā kūlana NEMA i nā helu IP.Ma ka ʻaoʻao ʻē aʻe, ʻaʻole kūpono nā helu IP i nā kūlana NEMA, no ka mea, aia ka NEMA i nā hiʻohiʻona huahana hou aʻe a me nā hoʻokolohua ʻaʻole i hāʻawi ʻia e ka ʻōnaehana helu IP.No ke kahua o ka noi, hāʻawi nui ʻia ka NEMA i nā noi ʻoihana a hoʻohana mua ʻia ma ʻAmelika ʻĀkau, akā hiki i nā helu IP ke uhi i kahi pūʻulu o nā noi ma ka honua holoʻokoʻa.
I ka hōʻuluʻulu manaʻo, aia kahi pilina ma waena o nā helu NEMA a me nā helu IP.Eia naʻe, pili kēia i ka lepo a me ka wai.ʻOiai hiki ke hoʻohālikelike i kēia mau hoʻokolohua ʻelua, pili wale ka hoʻohālikelike i ka pale i hāʻawi ʻia i ka lepo a me ka wai.E hoʻokomo kekahi mau mea hana o nā polokalamu kelepona i nā helu NEMA i kā lākou mau kikoʻī, a he mea nui ia e hoʻomaopopo i ka pili ʻana o ka kikoʻī NEMA i kāna mau helu IP.
Ka manawa hoʻouna: Iune-27-2022