He aha ka Vacuum Circuit Breaker (VCB)

He mea nui ka mea haki kaapuni vacuum i hoʻohana ʻia no ka hoʻomalu a me ka pale ʻana i ke au i loko o nā ʻōnaehana mana. Hana ia ma ke keakea ʻana a i ʻole ka wehe ʻana i kahi kaapuni ma lalo o nā kūlana maʻamau ʻole a hewa paha, e like me kahi kaapuni pōkole a i ʻole ka overload. ʻAʻole e like me nā mea haki kaapuni kuʻuna, hoʻohana nā VCB i ka vacuum e kinai i ke arc i hana ʻia i ka wā o kahi keakea. Hōʻoia kēia ʻano hana holomua i ka palekana kaapuni hilinaʻi a maikaʻi hoʻi, e lilo ana ʻo VCB i koho kaulana ma nā ʻoihana like ʻole.

Ma waho aʻe o kāna mau hiʻohiʻona palekana kīnā ʻole, hāʻawi ʻo VCB i kekahi mau pono. ʻO ka mea mua, hiki iā lākou ke kinai i ke arc i loko o kahi vacuum me ka ʻole o ka pono no kekahi mea hoʻokaʻawale hou aʻe, e ʻae ana i kahi hoʻolālā liʻiliʻi e pono ai ka mālama palena ʻia. Eia kekahi, ʻo ko lākou manawa pane wikiwiki (i ana ʻia ma microseconds) e hōʻoiaʻiʻo i ka pale hewa mau, e pale ana i nā lako uila waiwai nui. Ua maopopo he lōʻihi ke ola lawelawe o VCB ma mua o nā mea haki kaapuni kuʻuna, ʻaʻohe ona kinoea ʻino e like me SF6, a ʻoi aku ka launa pū me ke kaiapuni.

ʻO ka maʻalahi o nā mea haki kaapuni vacuum e kūpono ai lākou no nā ʻano hana like ʻole. Inā paha ma nā kikowaena mana, nā paka ʻoihana a i ʻole nā ​​hale noho, hoʻokō nā VCB i nā ʻano koi like ʻole o ke au uila a me ke au. Mai ka pale ʻana i nā mea hoʻololi a me nā mea hana uila a hiki i ka pale ʻana i nā ahi uila, he kuleana koʻikoʻi kēia mau mea haki kaapuni i ka mālama ʻana i ka pono a me ka palekana o nā ʻōnaehana uila nui.

I ka hōʻuluʻulu ʻana, he ʻāpana koʻikoʻi nā mea haki kaapuni vacuum o ke kahua uila hou. ʻO ko lākou hiki ke pale i nā ʻōnaehana uila mai nā hewa, me kā lākou hoʻolālā liʻiliʻi a me nā hiʻohiʻona aloha i ke kaiapuni, e hoʻolilo iā lākou i koho mua ma nā ʻoihana like ʻole. Ke hoʻomau nei ka holomua o ka ʻenehana, e hoʻokani pono nā VCB i kahi kuleana koʻikoʻi i ka hōʻoia ʻana i ka palekana a me ka pono o nā ʻōnaehana uila e ulu nei.