... 2. PWM switch power supply technology; 3. High output current; 4.Low order harmonic. 1. Working Principle: Three phase AC 380V, output DC ... chemical, metallurgy, mine, traffic etc. The application conditions are: power between 0-100KW, DC output voltage between 0-20V, output ... constant current effect, the output current do not fluctuate with power grid, the current accuracy ≤0.5%, output ripple factor ...