Keena kūʻē kū i ka honua
wehewehe huahana
I kēia manawa, ua kākau ʻia ke ʻano kumu hoʻokaʻawale ʻokoʻa ma o ke kū'ē ʻana i nā lula ʻoihana mana.ʻO ka mana ʻoihana mana DL/T620-1997 "Overvoltage Protection and Insulation Coordination of AC Electrical Installations" i ʻōlelo ʻia ma ka Paukū 3.1.4: "5~35KV ka mea nui o No ka hoʻoili mana a me ka ʻōnaehana hoʻoili i haku ʻia i nā laina uwea, i ka wā i hoʻokahi -ʻO ka hewa o ka pae honua he capacitive nui, hiki ke hoʻohana ʻia ke ʻano haʻahaʻa haʻahaʻa haʻahaʻa, akā ʻo ka pono o ka pono o ka lako mana, ka hopena o ka volta transient a me ka wā transient i nā mea uila i ka wā o nā hewa, a me ka hopena i ke kamaʻilio ʻana i nā koi ʻenehana palekana Relay a me ka ʻike hana kūloko, etc.Paukū 3.1.5 'ōlelo: "5KV a me 10KV nenoai hāʻawi mana a me ka mana mea kanu nenoaiu, i ka wā hoʻokahi-phase lepo hewa capacitor i keia manawa, i mea e pale aku i ka pōʻino i nā lako e like me ka resonance, awāwa, I arc grounding overvoltage, etc. ., hiki ke hoʻopaʻa ʻia me ke kūpaʻa kiʻekiʻe.
No ka hoʻolālā ʻana a me ke koho ʻana i nā keʻena kūʻē kūʻē, e ʻoluʻolu e nānā i: DL/780-2001 Distribution System Neutral Grounding Resistor Neutral Grounding Method he ala e pili ana i ka pae insulation o nā laina a me nā mea hana, ke keakea kamaʻilio, ka pale ʻana i ka relay a me ka palekana pūnaewele lako mana. Ma muli o ka pilikia piha o ka hilinaʻi a me nā kumu ʻē aʻe, ʻokoʻa nā ʻōnaehana lako mana o ka ʻoihana hoʻolaha o koʻu ʻāina a me nā ʻoihana nui a me nā ʻoihana mining.I ka wā ma mua, ʻo ka hapa nui o lākou i hoʻohana i ke ʻano hana o ka ungrounded neutral point a hoʻokumu ʻia e ka arc suppression coil.I nā makahiki i hala iho nei, ma muli o ka hoʻomohala ʻana o ka ʻōnaehana mana a me ka hoʻonui ʻana i ka hoʻohana ʻana i ka mana o nā mea hoʻohana, ua hoʻoikaika ikaika kekahi mau panalāʻau kūloko a me ke kaona i ke ʻano hana o ka grounding resistance.
