KYN28A-12 (Z) (GZS1) type armored move-open type AC metal-enclosed switchgear. He kūpono ia no ka ʻōnaehana mana AC 50HZ ʻekolu-phase, hoʻohana ʻia no ka loaʻa ʻana a me ka hāʻawi ʻana i ka ikehu uila a me ka mana kaapuni,
palekana a me ka nānā 'ana. Ua kūpono kēia huahana i nā kūlana: GB3906 "3 ~ 35kV AC metala-eclosed switchgear", GB / T11022 "Standard Common Technical Requirements for High Voltage Switchgear and Control Equipment", IEC60298 "Rated Voltage IkV and Above AC Metal-enclosed Switch".