施耐德 XDC12

瑞恩 瑞恩 瑞恩 瑞恩 瑞恩

时间原则控制绕线式电动机串电阻起动控制线路

图 2 为时间继电器控制绕线式电动机串电阻起动控制线路，又称为时间原则控制，，其中三个时间继电器 KT1 、 KT2 、 KT3分别控制三个接触器 KM1 、 KM2 、 KM3 按顺序依次吸合，自动切除转子绕组中的三级电阻，与起动按钮 SB1 串接的 KM1 、 KM2 、 KM3 三个常闭触头的作用是保证电动机在转子绕组中接入全部起动电阻的条件下才能起动。若其中任何一个接触器的主触头因熔焊或机械故障而没有释放时，电动机就不能起动。
３．电流原则控制绕线式电动机串电阻起动控制线路
二、 转子绕组串频敏变阻器起动控制线路
１．电动机单向旋转转子串频敏变阻器起动控制电路
２．电动机转子串频敏变阻器正反转起动控制线路

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