ʻO ka pahu Hxgn-12 pahu ʻano paʻa ʻo AC metal ring network switchgear he hanauna hou o nā huahana uila uila i hoʻolālā ʻia a hoʻomohala ʻia e kā mākou hui ma o ka hoʻokomo ʻana a me ka hoʻokomo ʻana i ka ʻenehana holomua ma ka home a ma waho, a me ka hui pū ʻana me ke koi lako mana o ka ʻōnaehana mana o Kina. Ua kūpono ke keʻena ʻoihana kelepona no ka hāʻawi ʻana i ka mana o ka pūnaewele apo i loko a i ʻole ka ʻōnaehana mana terminal e loaʻa ana a hāʻawi i ka ikehu uila a i ʻole overload a me ka pale kaapuni pōkole i loko o ka ʻōnaehana AC ʻekolu-phase me ka volta helu o 12kV a me ka helu helu ʻana o 50Hz, a kūpono hoʻi no ka pahu- ʻano substation a me ka pahu-type switch a pani. ʻO ka hoʻolālā o ke apo apo e like me nā kūlana IEC62271-200 a me GB3906.