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。
2
Together these four sectors accounted for more than half of all mediumvoltage drive revenues in 2008.
这四个行业在2008年合共占了中压电机全部销售额的一半多。
3
The average selling prices of mediumvoltage drives in China are much lower than the global average because of intense price competition and the prevalence of drives with lower power ratings.