天气预报 > 其他 > 干式变压器零序互感器装在哪
干式变压器零序互感器装在哪
更新时间: 2020-07-15 00:00:00  

变压器只有中心点接地后才有零序电流流通,所以零序电流互感器是装在变压器中心点接地线上。

在变压器低压侧中心点接地线上装设零序电流互感器,主要是为了报警。 当任一相火线对地短路时,中心点将流过很大的零序电流,此时在发生故障点处的断路器会自动启动。

关键词: 变压器 互感器

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