摘要:1软起动主电路 我公司供热站安装热网循环水泵4台,水泵配套电动机功率280kW,供热流量大、压力高。水泵的软起动器主电路接线见图1。软起动器的起动和运行方式是:按下起动按钮通过中间继电器,闭合软起动器端子S1、S2,软起动器按设定的初始电压和起动时间自动按斜坡升压,使水泵达速运行;当水泵达到运行速度后,
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