KYN28A-12（GZS1）型户内金属铠装抽出式开关设备，系3-12kV三相交流50Hz单母线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力系统的二次变电所的受电、送电及大型高压电动机动等。作控制保护、监测之用。本开关设备满足DL/T40-91，IEC298、GB3906等标准要求，具有防止带负荷推拉断路器手车，防止误分合断路、防止接地开关处于闭合位置时关合断路、防止误入带电隔室、防止在带电时误合接地开关的联锁功能，既可配用VS1真空断路器，又可配用ABB公司的VD4真空断路器。实为一种性能优越的配电装置。
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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