Sine wave filter

A. As the inverter's output contains a high-frequency harmonics, an increase of power cables and electrical losses. B. At the same time very high dv / dt will cause a few MHz, radiated interference. C. If the motor for long-term transmission (electrical cables over 50 meters), due to wave reflection caused by motor terminal voltage superposition, so that motor insulation damage, even cable burst. For the harmonic current, you can change the modulation method to reduce harmonic component, but not completely eliminated. By dv / dt caused by RF interference, you can install dv / dt of electromagnetic filters, but only for a certain length of cable effectively, is not suitable for any length of cable. At the same time to solve the above problems can be an effective way to make the installation of sine wave inverter output side of filter that will filter into the approximate SPWM modulated sine wave voltage waveform, sine wave filter out from the high-frequency-phase reactor, RC circuit, common-mode reactor component. Can effectively suppress high-frequency loss and dv / dt radio frequency interference, and to extend the motor and the inverter cable to 500 meters, even up to 3 km. Maximum operating current: 40 when the 400V AC / 690V AC Rated current: 5 to 500A at 40 , Electrical Frequency: up to 60Hz Switching frequency: 2KHz to 80KHz High Voltage Test: P on E 3000V AC for 3 seconds (factory test) P for P 3000V AC for 3 seconds (factory test) Protection class: IP00 Insulation Class: T40 / F (155 ) Temperature range: -25 to +85 (40 ! More than you need to demote) Maximum cable length: 1000m Rated voltage drop: 8 12% uk Overload: 2 times the current-30S 1.5 times the current of 1 minute Filters can be addressed to the motor PWM output voltage into a sinusoidal voltage. Which makes the motor life and reliability of the whole system a significant improvement