本产品配用电源必须符合风机铭牌标示的额定参数；电机过载保护装置请用户自行配置。
Power should be conformed with the rated parameter of blower Nameplate; overload protection device of motor is equipped by user.
主要是泵的转速太高、介质粘度又太高这样就会造成泵阻力很大，电机的瞬间启动电流超过额定电流，造成电机过载；
Mainly is the pump speed is too high, medium and high viscosity resistance is very big, this will cause pump motor moment of starting current more than rated current, motor overload;
过载保护：在1.2倍额定电流时启动，采用反时限特性动作；
Overload protection:Start at 1.2times of rated current, adopt inverse time lag characteristic action;
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