KYN28A-12（GZS1）型戶內金屬鎧裝抽出式開關設備，系3-12kV三相交流50Hz單母線及單母線分段系統的成套配電裝置。主要用于發電廠、中小型發電機送電、工礦企事業配電以及電力系統的二次變電所的受電、送電及大型高壓電動機動等。作控制保護、監測之用。本開關設備滿足DL/T40-91，IEC298、GB3906等標準要求，具有防止帶負荷推拉斷路器手車，防止誤分合斷路、防止接地開關處于閉合位置時關合斷路、防止誤入帶電隔室、防止在帶電時誤合接地開關的聯鎖功能，既可配用VS1真空斷路器，又可配用ABB公司的VD4真空斷路器。實為一種性能優越的配電裝置。
KYN28A-12 Indoor metal-clad withdrawable switchgear is suitable for the system of 3-10kV three-phase 50Hz single busbar and single busbar by-pass, mainly used to power plant, middle/small generator send electricity, industry-mine enterprise distribution and electric power system secondary transformer incoming feeder, sending power, large high-voltage motor starting, as controlling, protecting and monitoring device. The switchgear meets the standards of DL/T404-91, IEC298,GB3906. It equiped with prevention of loading pulling circuit breaker handcart, prevention of maloperating circuit breaker, prevention of closing circuit switch, prevention of accidently entering energized sepatate zone, prevention of closing earthing switch interlock with energization. The switchgear can be equiped with both VS1 vacuum circuit breaker and ABB VD4 circuit breaker. It is really an excellent distribution device.
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