Abstract: AC motors are widely used in many fields. In the process of use, the motor works through soft start until full power. PSA programmable AC power supply provides a convenient and feature-rich test power supply solution for AC motor performance testing, and accurately grasps the starting characteristics of the motor at each stage.
An AC motor is a device that converts the electrical energy of alternating current into mechanical energy. It is mainly composed of an electromagnet winding or distributed stator winding for generating a magnetic field and a rotating armature or rotor. Because of its simple structure, high work efficiency and convenient manufacturing, it is widely used in industrial and agricultural production, transportation, commerce and household appliances and other fields.
During the test of the AC motor, it is usually not possible to directly start it to the maximum power, especially if the motor is not equipped with the speed regulation function. Direct start of the motor at full power will generate too high starting current, which will cause the output voltage of the power supply equipment to drop and fluctuate or trigger overcurrent protection, resulting in failure to start normally. By slowly increasing the working voltage of the motor, the speed gradually reaches the expected set value, which is also commonly known as the soft start of the motor, which significantly reduces the starting current of the motor and ensures the normal development of the test. ZLG-PSA6000 series programmable AC power supply provides convenient operation and accurate power supply test power supply solutions for AC motors, namely LIST/STEP programming and adjusting the rate of change of output voltage, to realize the slow increase of AC motor power supply.
1. LIST/STEP programming scheme
The STEP/LIST function of the PSA6000 series programmable AC power supply allows flexible setting of the starting voltage value, ending voltage value, voltage step value, and the duration of each step voltage, etc., to achieve a step-by-step increase in voltage from low to high.
STEP setting interface diagram
STEP programming output voltage
2. Adjust the rate of change of the output voltage
The PSA6000 Series Programmable AC Power Supplies allow the rate of change of voltage to be set. By changing the rate of change of the voltage, the input voltage at both ends of the AC motor can be increased linearly from low to high.
The setting interface of the rate of change of the voltage
The voltage is output at a certain rate of change
ZLG PSA6000 series high-performance programmable AC power supply is a power grid analog output device with high-precision and wide-range output. The output power is 2~21kVA and the output frequency exceeds 5000Hz. Supporting output self-calibration can significantly improve the output accuracy, and integrates rich cutting-edge application solutions The solution provides normal or abnormal power supply conditions for electronic product performance testing and quality verification, and is equipped with complete protection functions (OVP/OCP/OPP/OTP, etc.), which can easily cope with complex tests in the stages of AC motor development, certification, and production. .
Post time: May-17-2022