KYN28A一12(GZS1)型户内金属铠装抽出式开关设备(以下简称开关设备)系3～10千伏三相交流50Hz单母线分段及单母线分段系统的成套配电装置。主要用于发电厂、中小型发电机送电、工矿企事业配电以及电业系统的二次变电所得受电、送电及大型高压电动机起动等，实行控制保护、监测之用。
The switchgear is a distribution assembly with(3-10KV)three phase AC voltage and(50HZ)frequency single busbar and its segmental system，it mainly applied to generators，electric energy feeding of middle—small size gen—erators，electric energy distribution of the industry and mine enterprises and public institutions，secondary trans—former sub—stations’receiving and feeding of electric power enterprises，and large size high voltage motors’ starting，it functions as control protection and monitoring
