1. What is underpressure and overpressure of water pump?
All electrical equipment has a rated voltage, but it is not actually guaranteed to work at the rated voltage. It is close to the rated voltage range, and the general requirement is ±15%. Protect electrical equipment and process quality. If the voltage is lower than -15%, it is "undervoltage". When the working voltage is lower than the voltage, a protective action will be taken and the power supply will be cut off. Conversely, if the voltage exceeds 15%, the voltage is "overvoltage". "Overvoltage" is a non-fatal failure of electrical equipment.
2. What are the consequences under undervoltage and overvoltage?
The insulation of the motor is mainly realized by insulating materials, and the insulation size is limited by the geometric space. When the motor exceeds the electrical insulation strength and voltage value, it is easy to cause insulation breakdown. Electrical appliances can generate heat, be punctured, burned, catch fire, and even cause accidents. When the voltage is too low, the output torque of the motor is reduced by a square time. It may cause the motor to stall and overheat, or even burn. Therefore, the operating voltage range of the motor is very narrow, and overvoltage and undervoltage protection must be installed.
3. When the water pump is under pressure protection and over pressure protection, how does the leading controller protect the pump?
In the dominant controller, when the actual operating voltage is lower or higher than the calibrated voltage, the pump is in the undervoltage/overvoltage protection state. In this case, the controller will try to restart the pump every 5 minutes (set time) until the line voltage returns to normal.