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电表为什么闪红光

更新时间: 2020-10-04 00:00:00     

电子式电能表的常数是每千瓦小时脉冲的个数。电能表常数会标注在电能表面板上,其单位为imp/kWh,红灯是发光二极管的"灯泡“叫做脉冲指示灯。在用电时电能表的脉冲指示灯将闪烁,当脉冲指示灯闪烁到一定的次数的时候计数器个位数值将进一位,用电量越大闪烁的频率也就越快。

关键词: 电表 为什么

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