Views: 0 Author: Site Editor Publish Time: 2022-05-22 Origin: Site
Water pumps are commonly used in the production of life, liquid conveying equipment, users in the selection of applicable, in the installation will use Single Phase Pump Controller to control, if the controller is often bad in use, what is the reason? The contactor is always bad, depending on whether it burns the contact or burns the coil, burning the contact may of course be too much current in the main circuit, if it burns the coil, it is often too high voltage on this side of the control circuit. Here are some answers.
Here is the content list:
High control supply voltages can damage the Single Phase Pump Controller.
Single Phase Pump Controller mechanical problems.
Is the working place of the Single Phase Pump Controller too wet.
If the Single Phase Pump Controller is often bad in use, the control power supply voltage may be too high, the coil voltage of the AC contactor is generally 220 volts, the withstand voltage is often 250 volts, the general single-phase voltage will rarely exceed this worth, but also does not exclude the three-phase imbalance or transformer grounding, causing a phase voltage a certain period is high If you keep burning the control circuit coils, you should, of course, consider this problem and install some overvoltage protection or constant voltage devices to avoid it. If there is still some dust or oil, impurity particles, and so on in the pump room, together with water vapor, may enter the magnetic circuit of the contactor, causing the contactor to close badly, and after a period of use will emit a buzzing sound, causing vibration and wear contacts, and it is also easy to shorten the service life.
If the pump motor is unbalanced, the current of a phase is large, and the contactor selection does not take into account the excess margin, it will also overheat and burn out after some time. Mechanical problems such as stalling of the Single Phase Pump Controller itself, worn motor bearings, or the motor rotor touching the ground, cause the motor current to exceed the rated current. High currents can be measured with a clamp meter. You should also pay attention to the wiring, such as loose wires, corroded and oxidized lugs, lack of contact, or aging contacts on one phase of the air switch, which can cause heat in the contact area and unbalance of the three phases, and do not exclude these factors from causing the short life of the contactor.
Water pump workplace is more humid, although the general Single Phase Pump Controller resistance to moisture is considered good, there is a degree of, if the water vapor is full of the kind, is indeed easy to cause corrosion and even short circuit breakdown insulation and so on. This time you can check whether the electrical box where the contactor is installed is not sealed well, or modify the location of the control cabinet, after all, the wet place, needs to consider leakage and safety issues, not just the contactor always burning problems. In addition, if the voltage of the control circuit is unstable, or if there is another small relay controlling the contactor coil, the relay contact is not in good contact, which will cause the voltage of the control circuit to fluctuate greatly, causing the contactor contacts to be in a poor state of bonding, causing the contactor to heat up and burn out.
For more Single Phase Pump Controller-related questions, please feel free to consult us. Our official website is https://www.winningcontroller.com/.
