Based on the statistics of operational faults of medium-voltage switchgear in Hangzhou power grid, the causes of faults are analysed.

统计了杭州电网中压开关设备的故障，对故障原因进行了分析，指出绝缘故障是主要因素。

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SMVS mainly engages in developing and manufacturing medium voltage vacuum interrupters (VI), vacuum circuit breakers (VCB) and gas insulated switchgear (GIS) as well as after sales services in China.

公司在中国主要从事陶瓷真空灭弧室、真空断路器、气体绝缘开关柜及相关产品的开发、制造、市场销售及技术售后服务。

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For monitoring temperature, insulation and mechanism of medium voltage switchgear, an on-line monitoring system was developed.

针对中压开关柜，以温度、机械和绝缘状态为监测对象，研制开发了一套在线监测装置。

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