Phase feeder is a kind of equipment used in industrial enterprises, mainly used to reduce reactive power losses caused by large and medium-sized motors. It can be connected in series in the rotor circuit of the motor, and by changing the phase relationship between the rotor current and the rotor voltage, and then changing the phase relationship between the stator current and the voltage of the motor, it can improve the power factor and efficiency of the motor itself, improve the overload capacity of the motor, reduce the stator current of the motor, and reduce the loss of the motor itself.
Phase injectors can be divided into two categories: stationary phase injectors and variable load phase injectors. The stationary phase feeder is a reactive power in-situ compensation device designed for energy saving and consumption reduction of large and medium-sized wound asynchronous motors, which can be widely used in the in-situ compensation of large and medium-sized wound asynchronous motors in many industries. The variable load phase feeder is a phase feeder that compensates according to the change of working conditions.
In addition, the performance characteristics of the phase injector include: the compensation performance is much better than the capacitance compensation, and the energy saving effect is remarkableIt can increase the power factor of the motor to more than 95%;Reduce the stator current of the motor by 10% and 20%, and reduce the line loss and copper loss by 20% and 30%;The temperature rise of the motor is significantly reduced, the overload capacity and efficiency are greatly improved, and the service life of the motor is extendedIt has the function of automatic fault protection, simple operation, and maintenance does not affect production.
Please note that when using the phase injector, you need to follow the relevant steps, such as troubleshooting the phase injector, checking whether the control power supply and rotor phase sequence have been moved, etc. At the same time, the mechanical structure of the phase feeder should also be kept normal, such as checking the main contact of KM2, the rotor circuit and the cable for poor insulation.