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DTKX开关消弧柜

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  DTKX开关消弧柜。装置主要有三相组合式过电压保护器DTGB、可分相控制的高压真空接触器JZ、微机控制器、高压限流熔断器组件FU及带有辅助二次绕组的电压互感器PT等组成。一旦系统发生单相弧光接地,微机控制器立即判别故障类型和相别并向故障相的真空接触器JZ发出动作指令,真空接触器J2&30ms左右完成合闸动作,间歇性弧光接地随之被转化为金属接地。真空接触器动作之前的过电压由三项组合式过电压保护器DTGB限制在较低的数值。

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